Tag: conferences

Registration is open for the 2025 MSE Summit: Pathways to Microbiome Stewardship!!

sueishaqlabLeave a comment

2025 MSE Summit: Pathways to Microbiome Stewardship

Summary of the event: Microbiome stewardship is the broad idea that we need to consider ecosystem-level factors when we think about public health, as our environment, behaviors, and public policy affects interactions between microbes and human health.  Our ability to develop practices and advocate for policy reform that address societal inequities is limited without a strong microbiome stewardship framework. Led by MSE and the Microbiome Stewardship working group, attendees of the webinars will learn how other researchers engage with microbiome or health stewardship. Participants of the workshops will plan a pathway to bring their own work in line with principles of conservation and stewardship, or design future research to provide tangible and meaningful stewardship endpoints relevant to their area of focus.

Registration is open!

Webinar Session 1: Focus on Host Microbiomes

Format: Webinar presentations of research. Online only — the removal of US federal funding leaves us unable to host this in person.

Cost: Free

Date: Monday July 7, 2025; 12:00 ~ 5:00 PM Eastern Daylight Time

TimeAgenda
12:00 ~ 12:15 PMWelcome and Intro to the Summit
Sue Ishaq, PhD, Associate Professor, University of Maine; Founder and Lead, MSE
12:15 ~ 1:00 PM The Concept of Microbiome Stewardship
Kieran O’Doherty, PhD, Professor, University of Guelph; MSE
1:00 ~ 1:45 PM Indigenous perspectives on microbiome stewardship and public health. 
Nicole Redvers, DPhil, ND, MPH, Associate Professor, Western Research Chair & Director, Indigenous Planetary Health; Schulich School of Medicine & Dentistry, Schulich Interfaculty Program in Public Health, University of Western Ontario

Dr. Nicole Redvers, DPhil, ND, MPH, is a member of the Deninu K’ue First Nation (Canada) and has worked with Indigenous patients, scholars, and communities around the globe her entire career. She is an Associate Professor, Western Research Chair, and Director of Indigenous Planetary Health at the Schulich School of Medicine & Dentistry at Western University. Dr. Redvers also currently serves as the Vice President Research at the Association of Faculties of Medicine of Canada (AFMC). She has been actively involved at regional, national, and international levels promoting the inclusion of Indigenous perspectives in both human and planetary health research and practice. Dr. Redvers is the author of the trade paperback book titled, ‘The Science of the Sacred: Bridging Global Indigenous Medicine Systems and Modern Scientific Principles’.
1:45 ~ 2:30 PMCase study in racism in vaginal microbiome work as studies use small group sizes and incomparable comparisons. 
Ari Kozik, PhD, Assistant Professor of Molecular, Cellular, and Developmental Biology, Michigan State University 
2:30 – 2:45 PMbreak
2:45 – 3:30 PM“Microbiome-based therapeutics in clinical practice: how can we be better stewards?”
Susy Hota, MD, MSc, FRCPC.
Division Head, Infectious Diseases, University Health Network and Sinai Health
Medical Director, Infection Prevention and Control, University Health Network
Co-Lead of the Microbiota Therapeutics Outcomes Program
Associate Professor, Division of Infectious Diseases, University of Toronto

Dr. Hota is an Associate Professor of Medicine in the Division of Infectious Diseases at the University of Toronto, Division Head for Infectious Diseases at University Health Network and Sinai Health and Medical Director of Infection Prevention and Control at University Health Network in Toronto, Canada. Her academic interests include management of Clostridioides difficile infection, fecal microbiota transplantation (FMT), and emergency preparedness for infectious diseases. She co-leads the Microbiota Therapeutics Outcomes Program, which supports the use of microbiome-based therapeutics for clinical care and research applications in Toronto, Ontario, Canada.
3:30 – 4:15 PMThe political economy of emerging digital data collection platforms and applications with microbial stewardship.
Victor Secco, PhD, Postdoctoral Researcher, Department of Philosophy and Cultural Heritage, Ca Foscari University of Venice
4:15 – 5:00 PMTBD

Webinar Session 2: Focus on Environmental Microbiomes

Format: Webinar presentations of research. Online only — the removal of US federal funding leaves us unable to host this in person.

Cost: Free

Date: Tuesday July 8, 2025; 12:00 ~ 5:00 PM Eastern Daylight Time

TimeAgenda
12:00 ~ 12:15 PMWelcome and Intro to the Summit.
Sue Ishaq, PhD, Associate Professor, University of Maine; Founder and Lead, MSE
12:15 ~ 1:00 PM “Microbiome stewardship curricular design using MSE themes“
Carla Bonilla, PhD, Associate Professor of Biology, University of San Diego; MSE

Dr. Bonilla uses critical pedagogy in STEM curriculum to promote student success. In Microbiology and Genetics, she uses an interdisciplinary approach to help students see the connections between science and society, and the role of scientiests as social agents of change.
1:00 ~ 1:45 PM The Concept of Microbiome Stewardship
Mallory Choudoir, PhD, Assistant Professor and Soil Microbiome Extension Specialist, North Carolina State University; MSE
1:45 ~ 2:30 PM “Microbes, microbiomes and biodiversity conservation“
Kent Redford, PhD, Principal, Archipelago Consulting
2:30 – 2:45 PM Break
2:45 – 3:30 PMBuilt environment and microbial exposures.
Jennifer Kuzma, PhD, Professor, School of Public and International Affairs; Co-Director, Genetic Engineering & Society Center; Associate Director, Precision Microbiome Engineering Center (PreMiEr, NSF-ERC); North Carolina State University
Kristen Landreville, PhD, Senior Research Scholar, Societal and Ethical Implications (SEI) Core in the PreMiEr Engineering Research Center, North Carolina State University
3:30 – 4:15 PMAntimicrobial resistance, wastewater, and redlining urban centers.
Maya Nadipalli, PhD, Assistant Professor, Emory University
4:15 – 5:00 PMTBD

Workshop Sessions 1 and 2: Stewardship Planning Activities

Format: Zoom, Breakout rooms for Discussions and Collaborative Activities

Cost: Apply to attend, and if your application is accepted, the cost is $15 USD for students/postdocs, $50 USD for professionals, and there is a no-cost option for anyone who needs it.

Session 1: Focus on Host Microbiomes, Wednesday July 9, 2025, 1:00 ~ 4:00 PM Eastern Daylight Time

Session 2: Focus on Environmental Microbiomes, Thursday July 10; 1:00 ~ 4:00 PM Eastern Daylight Time

TimeActivity
1:00 ~ 1:45 PM

(~ 15 min to get started and ~30 min activity)		Group activity 1: Create your discussion group 
We will use Zoom Breakout Rooms to form groups of 5 -10 people based on several topic themes. Each group will be led by an invited speaker and an MSE group member, and group notetaking will be facilitated using shared online documents.  

Discussion 1 (Foundations)
What is your name and what kind of research do you do? How does the connection between microbiomes and health (human and non-human) relate with your work? What needs to be stewarded/protected in your area of expertise?To achieve goals of microbiome stewardship in your area, what interdisciplinary partnerships, or research or education programs need to be developed? What problems exist in your field that prevent implementing research or policy solutions?
1:45 ~ 2:00 PM
(15 min)		Break 
2:00 – 3:00 PM
(1 hour)		Group activity: Create your path to microbiome stewardship
In Zoom Breakout Rooms organized by broad topics, we will generate case studies related to our own work which would include microbiome stewardship.First, use the template provided to draw your pathway. Then, design a project or research that would advance you along that path. Finally, identify a task list, time table, list of needs, and list of goals/outputs for the project.

During your activity, consider the two discussion prompts: 

Discussion 2 (Policy Connections)
What are the policy domains we need to target for protection of microbial ecosystems to ensure positive health outcomes? What kind of policies could be effective in helping to maintain microbiome health? What agencies or organizations might oversee regulations for the protection of microbial ecosystems? How could one begin to advocate for microbiome health in various policy domains?

Discussion 3 (Getting Microbiome Stewardship onto the Agenda)
How can we raise awareness about the importance of microbial ecologies in human and planetary health? How can we get the protection of microbial ecosystems onto policy maker agendas? What initiatives currently exist with whom we can seek partnerships?
3:30 -3:30 PM
(~30 min)		Share with the full group
Each group will share a summary of their discussions to the full group in the main Zoom room.

What is “microbiome stewardship”?

Microbiomes are essential to human and environmental health; all organisms on our planet rely on the microbial ecologies that inhabit and surround us. There is increasing evidence that modern societal practices are harming essential microbiomes, and thereby threatening the health of the larger organisms and ecosystems that exist in symbiotic relationship with them. In spite of scientific recognition of the importance of microbiomes and of the threats they face, there is very little collective societal action to protect and conserve essential microbiomes. Pesticide use, pollution, industrialized food production, and many other societal practices that are damaging our collective microbiomes can only be addressed at the level of policy. Microbiome stewardship is the broad idea that we need to consider ecosystem-level factors when we think about public health, as our environment, behaviors, and public policy affects interactions between microbes and human health. Microbiomes are highly dynamic systems, featuring bacteria, archaea, protozoa, fungi, and viruses; and our personal microbiomes are derived from a larger shared, collective microbial resource.

The Microbiome Stewardship research group is currently working on creating a definition, framework, and guidelines.

Figure 1. Microbiome stewardship as a concept and framework for ensuring human and planetary health supported by microbial functions. Human microbiomes are constituted from our environment, which has determinants based largely on societal systems (e.g., agriculture and food systems, built environment, health care accessibility) that operate beyond individual choice and behavioral interventions. Figure created with BioRender.com.

Meet the Summit-Organizing Team

A headshot of Dr. Sue Ishaq, PhD in which she is wearing a black and white houndstooth pattern waistcoat and a white button up shirt. Graphics have been added to show a strand of DNA and the words "love your microbes"

Dr. Sue Ishaq, PhD., is an Associate Professor of Microbiomes, University of Maine; and founded MSE in 2020.  Over the years, her research has gone from wild animal gut microbiomes, to soils, to buildings, and back to the gut. Since 2019, her lab in Maine focuses on host-associated microbial communities in animals and humans, and in particular, how host and microbes interact in the gut and can be harnessed to reduce inflammation. She is also the early-career At Large member of the Board of Directors for the American Society for Microbiology, 2024- 2027. 

A headshot of Dr. Kieran O'Doherty, PhD who is wearing a black pinstripe shirt and standing outside in front of a yellow brick wall.

Dr. Kieran C. O’Doherty, PhD., is professor in the department of psychology at the University of Guelph, where he directs the Discourse, Science, Publics research Group. His research focuses on the social and ethical implications of science and technology and public engagement on science and technology. He has published on such topics as data governance, vaccines, human tissue biobanks, the human microbiome, salmon genomics, and genetic testing. A particular emphasis of his research is on theory and methods of public deliberation, in which members of the public are involved in collectively developing recommendations for the governance of science & technology. Recent edited volumes include Psychological Studies of Science and Technology (2019) and The Sage Handbook of Applied Social Psychology (2019). He is editor of Theory & Psychology.

Dr. Rob Beiko, PhD., is a Professor and Head of the Algorithms and Bioinformatics research cluster in the Faculty of Computer Science at Dalhousie University. His research aims to understand microbial diversity and evolution using machine learning, phylogenetics, time-series algorithms, and visualization techniques. His group is developing software tools and pipelines to comprehensively survey genes and mobile genetic elements in bacterial genomes, and understand how these genomes have been shaped by vertical inheritance, recombination, and lateral gene transfer. He is also a co-founder of Dartmouth Ocean Technologies, Inc., a developer of environmental DNA sampling devices.

Dr. Emma AllenVercoe, PhD, is a Professor of Microbiology at the University of Guelph, and a Tier 1 Canada Research Chair in Human Gut Microbiome Function and Host Interactions. Her research portfolio is broad, encompassing host-pathogen interplay, live microbial products as therapeutic agents, gut microbiome and anaerobic culture (humans and animals), and the study of ‘missing gut microbes’ i.e. those that are present in hunter-gatherer societies but missing in the industrialized world.  She has developed the Robogut – a culture system that allows for the growth of gut microbial communities in vitro, and is currently busy a centre for microbiome culture and preservation at the University of Guelph.

Dr. Mallory Choudoir, PhD wearing a button up bro

Dr. Mallory Choudoir, PhD, is an Assistant Professor & Soil Microbiome Extension Specialist in the Department of Plant & Microbial Biology at North Carolina State University. The goal of her applied research and extension program is to translate microbiome science to sustainable agriculture. She aims to develop microbial-centered solutions for optimizing crop productivity, reducing agronomic inputs, and enhancing  agroecosystem resilience to climate change.

Diego Silva, PhD wearing a blue shirt and eye glasses and standing in from of a red brick wall.

Diego Silva, PhD, is a Senior Lecturer in Bioethics at Sydney Health Ethics and the University of Sydney School of Public Health. His research centers on public health ethics, particularly the application of political theory in the context of infectious diseases and health security, e.g., tuberculosis, COVID-19, antimicrobial resistance, etc. He is currently the outgoing Chair and a member of the Public Health Ethics Consultative Group at the Public Health Agency of Canada and works with the World Health Organization on various public health ethics topics on an ad hoc basis.

White paper and perspective published on “Running a queer- and trans-inclusive faculty hiring process”!!

sueishaqlabLeave a comment

I’m delighted to announce the public release of a white paper on queer- and trans-inclusive faculty hiring practices, and a perspective piece introducing it!! This is the culmination of months of writing by an international group of talented scientists led by Dr. JL Weissman, and I was honored to participate in these and future efforts from the group.

The newly-formed group, Advancing Queer and Trans Equity in Science (AQTES), wants to improve the field of research by making the hiring process fair and welcoming for everyone. No matter what your personal identity is, we can all agree that fair and unbiased job searches are critical to hiring the best talent. But, sometimes a poorly-organized job search prevents the people with the best talent from applying at all.

In our white paper, we give suggestions on how to host a job search that is better for everyone. We provide examples and advice on how to write job adverts, create the agenda and atmosphere for the job search, how to make the interview process more accessible for everyone by remembering that we are humans and not robots, and how to support your new faculty.

Running a queer- and trans-inclusive faculty hiring process.

Authors

Weissman, JL, Chappell, C.R., Rodrigues de Oliveira, B.F., Evans, N., Fagre, A.C., Forsythe, D.,  Frese, S.A., Gregor, R., Ishaq, S.L., Johnston, J., Bittu, K.R., Matsuda, S.B., McCarren, S., Ortiz Alvarez de la Campa, M., Roepkw, T.A., Sinnott-Armstrong, N., Stobie, C.S., Talluto, L., Vargas-Muñiz, J., Advancing Queer and Trans Equity in Science (AQTES).

Abstract

Queer and transgender scientists face documented systemic challenges across the sciences, and therefore have a higher attrition rate than their peers. Recent calls for change within science have emphasized the importance of addressing barriers to the success and retention of queer and trans scientists to create a more inclusive, equitable, and just scientific establishment. Crucially, we note these calls come primarily from early career researchers; relatively few queer and trans scientists have passed through the gauntlet of the faculty job search to become faculty ourselves, which is typically key to long-term persistence in academia. Our lack of representation creates a self-reinforcing cycle in which queer and trans trainees do not see our needs considered in established processes and power structures. Moreover, this status quo has historically been and continues to be harmful, disproportionately impacting those of us who have multiple intersecting marginalized identities. Here, we provide concrete guidance to search committees to support queer and trans candidates throughout the faculty selection process based on our personal experiences as early career scientists who have been on the job market.

Graphics in the post and the article created by Callie R. Chappell.

Citations

Citation for the paper: Weissman, JL, Chappell, C.R., Rodrigues de Oliveira, B.F., Evans, N., Fagre, A.C., Forsythe, D.,  Frese, S.A., Gregor, R., Ishaq, S.L., Johnston, J., Bittu, K.R., Matsuda, S.B., McCarren, S., Ortiz Alvarez de la Campa, M., Roepkw, T.A., Sinnott-Armstrong, N., Stobie, C.S., Talluto, L., Vargas-Muñiz, J., Advancing Queer and Trans Equity in Science (AQTES). 2024. Running a queer- and trans-inclusive faculty hiring process. EcoEvoRvix repository 6791.

Perspective piece introducing the paper:  Weissman JL, Chappell CR, Francesco Rodrigues de Oliveira B, Evans N, Fagre AC, Forsythe D, et al. (2024) Queer- and trans-inclusive faculty hiring—A call for change. PLoS Biol 22(11): e3002919.

This work is being presented at the American Geophysical Union annual meeting in Washington DC in December, in the session on “ED12A: Advances and Progress Toward a More Inclusive, Diverse, Equitable, and Accessible Scientific Community II”.

This work is being presented as a seminar at the Microbes and Social Equity working group virtual seminar series, Dec 20th, 2024. Registration is free but required.

Summer 2023 wrap up

sueishaqlabLeave a comment

It feels like the summer semester just began, and here we are, already preparing for fall classes! There has been so much going on in the lab that I wasn’t able to keep up with regular posts, so here are some of the highlights.

Conferences

I attended four symposia/conferences this summer, starting with the virtual MSE 2023 summer symposium in early June, featuring 4 days of invited talks organized around themes, and a 5th day featuring contributed short talks (something new we tried this year). The whole week was fantastic and sparked thoughtful conversation on the using of microbial communities to reduce disparities in positive and negative health outcomes, living conditions, and more. You can find the recorded content on the symposium event page.

Next, I went to the Microbiome Day at Boston University in early July in Boston, MA, where I gave the keynote talk.

I went to the annual meeting for the American Society for Nutrition in Boston, MA in mid-July, where PhD students Johanna Holman, Lola Holcomb, and master’s student Marissa Kinney all presented posters, and most of the lab was able to make it to a puzzle quest at Boda Borg.

And, I went to the Ecological Society of America annual meeting in Portland, OR in August to present some recent work on scallop larval rearing tanks and the bacterial communities we found there. That included an unexpected effect of coastal water dynamics and the phase of the moon. That work has recently been published.

Lab

The lab has been bustling all summer as we work on several projects. Master’s student Ayodeji Olaniyi has been working on a project to identify Vibrio bacteria isolated from the sides of scallop larvae hatchery tanks, as part of a larger project investigating microbial communities in hatcheries.

Marissa and visiting postdoc Gloria Adjapong have been preparing a 16S rRNA sequencing library for hundreds of scallop tank biofilm samples we collected last year, although I don’t have any photos of that.

Johanna has been leading a team of students (Alexis Kirkendall, Lilian Nowak, Aakriti Sharma, and Jaymie Sideaway) on a culturing project to screen hundreds of bacterial isolates that were collected from the gastrointestinal tracts of mice eating borccoli sprouts. We are testing them for their capacity to metabolize different glucosinolates into anti-inflammatory compounds, as well as grow on different media types. In the process, we found that the bacteria we are using as a positive control likes to move from one test well to another when its favorite media is available — but not when glucose is present.

Looking ahead to fall

This fall, the lab will be supporting Ayodeji to write and defend his thesis, as he is currently looking for research/technician jobs. His thesis focuses on Vibrio bacteria in scallop larvae hatcheries.

We’ll also be preparing to welcome Alexis back as a graduate student in January 2024, to continue her work on bacteria isolated from mice eating broccoli sprouts.

I’ll be teaching two classes this fall, AVS 254 Intro to Animal Microbiomes, and AVS 454/554 DNA Sequencing Data Analysis lab, and with 90 students enrolled between them I will luckily be assisted by Ayodeji and Lola, who will be co-grading assignments with me.

Finally, I’ve got more travel coming up soon, as I’ll be giving a talk at the 9th SoCal Microbiome Symposium in September!

Upcoming presentations at the 2023 Ecological Society of America annual meeting!

sueishaqlabLeave a comment

Ecological Society of America meeting, Aug 6 – 11, 2023, Portland, Oregon

Scallop microbes and sustainable aquaculture: host-microbe dynamics situated in environmental and social context.

Presentation ID: 1372900

Session Information

Session Title: Microbes as Tools to Solve Ecological Problems for All
Session Type: Inspire Session
Date: Thursday August 10, 2023
Session Time: 3:30 PM – 5:00 PM Pacific Time

Authors: Suzanne L. Ishaq1

Affiliations: 1 University of Maine, School of Food and Agriculture, Orono, ME 04469 USA

Atlantic sea scallop (Placopecten magellanicus) is the second largest fishery in Maine, primarily through wild harvest. Farming is a promising way to meet year-round market demands, create jobs, and reduce ecological impacts of harvest, but relies on wild-caught juveniles as larval survival in hatcheries is low for unknown reasons. My collaborative research group explores the role of larval and tank microbiomes in hatcheries compared to wild scallop veligers. In addition to basic and applied microbiome research, the research team meets with industry partners weekly to discuss results, trends, generate real-world-problem-driven project designs, and collaborate on research, education, and student training.

Bacterial community trends associated with sea scallop, Placopecten magellanicus, larvae in a hatchery system.

Poster ID:  1475974
Poster Title: “Bacterial community trends associated with sea scallop, Placopecten magellanicus, larvae in a hatchery system.”

Session Information

Agriculture
Session Date: Tuesday August 8, 2023 
Session Time: 5:00 PM – 6:30 PM Pacific Time

Authors: Suzanne L. Ishaq1*, Sarah Hosler1, Adwoa Dankwa1, Damian C. Brady2, Erin Grey3, Phoebe Jekielek4, Kyle Pepperman5, Jennifer Perry1, Rachel Lasley-Rasher6, Brian Beal3,7, Timothy J. Bowden1

Affiliations: 1 School of Food & Agriculture, University of Maine, Orono ME 04469. 2 School of Marine Sciences, Darling Marine Center, University of Maine. 3 School of Biology and Ecology, University of Maine, Orono ME 04469. 4 Department of Biological Sciences, University of Southern Maine, Portland ME 04103. 5 Downeast Institute, Beals, ME 04611. 6  Ecology and Environmental Sciences, University of Maine, Orono ME 04473. 7 Division of Environmental & Biological Sciences, University of Maine at Machias, Machias, ME 04654

Atlantic sea scallops, Placopecten magellanicus, are the most economically important marine bivalves along the northeastern coast of North America, and wild-caught adults and juvenile spat are increasingly being cultured in aquaculture facilities and coastal farms. While adults can be induced to spawn successfully in hatcheries, the last two weeks of the larval maturation phase are plagued by large mortality events, making production unfeasible. Research into other scallop- and aquacultured-species point to animal loss from bacterial infections or from altered functionality of host-associated microbiota. There are no previous studies of the bacterial communities from biofilms growing in scallop hatchery tanks, nor even host-microbial studies with this species of sea scallops. We identified bacterial communities in veliger-stage wild larvae, hatchery larvae, and tank biofilms, using the V3-V4 region of the 16S rDNA gene, via Illumina MiSeq sequencing. Hatchery larvae had lower bacterial richness (number of bacteria taxa present) than the wild larvae and tank biofilms, and hatchery larvae had a similar bacterial community (which taxa were present) to both wild larvae and tank biofilms. Bacterial richness was not significantly different between tanks which had been occupied by larvae for 48 hours, and those which had just been drained, scrubbed clean, and refilled with filtered seawater. Static-water-flow compared to continuous-water-flow (flow-through) did not generate different levels of bacterial richness overall, and only an equivocal difference when accounting for time as a smoothing feature in the model (GAM, p = 0.04). Bacterial richness and community similarity between tank samples fluctuated over the trial in repeated patterns of rise and fall, which showed some correlation to lunar cycle  where richness is high when the moon is about 50% and richness is low during new and full moon phases. This may be a proxy for the effects of spring tides and trends in seawater bacteria and phages which are propagated into hatchery tanks. The number of days since the full moon was significantly correlated with bacterial community richness in tanks (GAM, p < 0.01): low during the full moon, peaking ~ 21 days after the full moon, and decreasing again at the next full moon.  These results along with future work, will inform hatcheries on methods that will increase larval survival in these facilities, for example, implementing additional filtering or avoiding seawater collection during spring tides, to reduce certain bacterial taxa of concern or promoting a more diverse microbial community which would compete against pathogens.

Happening today: MSE symposium session showcasing members’ research!

sueishaqlabLeave a comment

The Microbes and Social Equity working group, and The University of Maine Institute of Medicine present a virtual symposium on:

“Living in a Microbial World”

June 5 – 9th, 2023.

Register here! It is free, and required.

Format: virtual meeting, Zoom platform.

The full program is here.

Session 5: MSE Member Research Showcase

Friday, June 9th, 11 am – 2:30 pm EDT.

Session hosts and organizers: Emily Wissel, Curtis Tilves, Sue Ishaq

Session Scope: MSE members will be sharing their own work in short presentations to showcase the variety of disciplines of our group. The presentation list will include students and non-researchers, and research on microbiomes, people, ecosystems, and more even if it is not related to microbes and/or social equity.

Scheduled Talks

Amber BenezraThe trillions of microbes in and on our bodies are determined by not only biology but also our social connections. Gut Anthro tells the fascinating story of how a sociocultural anthropologist developed a collaborative “anthropology of microbes” with a human microbial ecologist to address global health crises across disciplines. It asks: what would it mean for anthropology to act with science? Based partly at a preeminent U.S. lab studying the human microbiome, the Center for Genome Sciences at Washington University, and partly at a field site in Bangladesh studying infant malnutrition, the book examines how microbes travel between human guts in the “field” and in microbiome laboratories, influencing definitions of health and disease, and how the microbiome can change our views on evolution, agency, and life.
My book Gut Anthro is officially on sale!
Curtis TilvesThis presentation will summarize a work-in-progress for my pilot grant, “Examining the Role of the Gut Microbiome in Racial Disparities in Hypertension”.

Racial disparities in hypertension are believed to be driven by the environment (i.e., non-genetic factors). Identifying modifiable environmental factors that drive racial disparities in hypertension can help lead to interventions to reduce health inequities. The gut microbiome is modifiable and considered a sensor to changing environmental exposures. As with hypertension, racial/ethnic differences in the microbiome have also been documented and are thought to be driven by environment.

Differences in the microbiome and microbial metabolites by race may affect risk of hypertension. Gut microbiome features differ by hypertension status, and microbially-produced metabolites can influence blood pressure through a variety of biological mechanisms. Studies suggest that the associations of microbiome compositions, microbial function, and serum plasma metabolomics with blood pressure may differ by racial/ethnic identities.

This project intends to investigate more deeply the contributors to race differences in the microbiome and hypertension using Black and White participant data from the Baltimore Longitudinal Study of Aging (BLSA). Our aims:
Aim 1: Characterize the gut microbiome (diversity, composition, functional potential, and fecal microbial metabolites) of Black (N=220) and White (N=549) participants in BLSA.
Aim 2: Investigate the environmental factors that drive differences in microbiome features and microbial metabolites between Black and White participants in BLSA.
Aim 3: Examine the cross-sectional and longitudinal association of the gut microbiome and fecal microbial metabolites with blood pressure, before and after adjustment for race-associated environmental factors.
Melissa ManusSocial interactions shape the infant microbiome by providing opportunities for caregivers to spread bacteria through physical contact. With most research focused on the impact of maternal-infant contact on the infant gut microbiome, it is unclear how alloparents (i.e. caregivers other than the parents) influence the bacterial communities of infant body sites that are frequently contacted during bouts of caregiving, including the skin. To begin to understand how allocare may influence the diversity of the infant microbiome, detailed questionnaire data on infant-alloparent relationships and specific allocare behaviors were coupled with skin and fecal microbiome samples (4 body sites) from 48 infants living in Chicago, U.S.A. Data from 16S rRNA gene amplicon sequencing indicated that infant skin and fecal bacterial diversity showed a strong association to having female adult alloparents. Alloparental feeding and co-sleeping displayed stronger associations to infant bacterial diversity compared to playing or holding. There was variation in the magnitude and direction of these relationships across infant body sites. Bacterial relative abundances varied by infant-alloparent relationship and breastfeeding status. This study provides some of the first evidence of an association between allocare and infant bacterial diversity. The results suggest that infants’ exposure to bacteria from the social environment may differ based on infant-alloparent relationships and allocare behaviors. Since the microbiome influences immune system development, variation in allocare that impacts the diversity of infant bacterial communities may be an underexplored dimension of the social determinants of health in early life.

Julian Damashek
This talk will summarize work my laboratory is doing on environmental microbiomes. We primarily study nitrogen cycling and antimicrobial resistance in aquatic ecosystems, particularly in waters impacted by both urban and rural populations. Here I will describe a recent project attempting to use microbial source tracking to determine sources of nutrient inputs throughout a river network (the Mohawk/Teionontatátie), where we are combining quantification of fecal pathogens with detailed measurements of nitrogen compounds. We are particularly interested in determining the sources of urea and ammonium, since these can contribute to the extend or toxicity of harmful algal blooms in many freshwaters. I will also outline a project using metagenomic data to study antibiotic resistance gene abundance and diversity in urban estuary waters.
Ana Zuniga



Bacterial biosensor approaches for fast and cost-effective personal monitoring of potential gut biomarkers.
Gut metabolites are pivotal mediators of host-microbiome interactions. The production of microbiome-derived metabolites can be affected by environmental chemicals, dietary substrate availability, and interindividual variability. Thus, they provide an essential window into human physiology and disease, where socio-environmental aspects also play a key role. However, current methods to monitor gut metabolites rely on heavy and expensive technologies such as liquid chromatography-mass spectrometry (LC-MS). In that context, robust, fast, field-deployable, and cost-effective strategies for monitoring fecal metabolites would support large-scale functional studies and routine monitoring of metabolite biomarkers associated with environmental exposures. Living cells are an attractive option to engineer biosensors due to their ability to detect and process many environmental signals and their self-replicating nature. Here we optimized a workflow for feces processing that supports metabolite detection using bacterial biosensors. We show that simple centrifugation and filtration steps remove host microbes and support reproducible preparation of a physiological-derived media retaining essential characteristics of human feces, such as matrix effects and endogenous metabolites. We measure the performance of bacterial biosensors for benzoate, lactate, anhydrotetracycline, and bile acids, and find that they are highly sensitive to fecal matrices. However, encapsulating the bacteria in hydrogel helps reduce this inhibitory effect. Finally, by detecting endogenous bile acids, we demonstrate that bacterial biosensors could be used for future metabolite monitoring in feces. This work lays the foundation for the optimization and use of bacterial biosensors in the monitoring of fecal biomarkers for a better characterization of individual environmental exposures.
Erika Diaz Almeyda
Abstract BD
Ramya KumarAntimicrobial resistance (AMR) is a global problem with a heavy toll on patients, healthcare systems, and the economy. In war affected regions, where healthcare systems are already strained by the impacts of war, AMR poses an even bigger threat to the ability to monitor antibiotic use, distribution, and treatment of AMR infections. The occupied Palestinian Territories (oPT) have been under settler colonization for decades, resulting in extensive healthcare fragmentation. We conducted the scoping review using databases PubMed, CINAHL, Embase, and Web of Science. Included articles studied AMR in the oPT.  Preliminary results demonstrate that our search terms identified 1787 articles. Of these, 109 articles met the inclusion criteria and were included in the analysis. Human populations accounted for 83 of the studies, seven were studies on animals, four were studies on water, 12 were studies on knowledge and attitudes regarding AMR and three were studies on AMR in medical tourism. The study of AMR in Palestinian populations provides a lens to study the ecology of human – animal – environment interactions in a OneHealth framework and how war shapes this ecology. The paper will contextualize AMR in a social and political context and reveal deeper layers contributing to the problem including effects of war on behaviors and education of patients and weakening of the healthcare system. Given the lack of literature reporting the relationship between violence and AMR in populations affected by war and settler colonization, this literature review will be the first article synthesizing and critiquing reports of AMR in Palestine. 
Lola HolcombInflammatory Bowel Diseases (IBD) are chronic conditions characterized by inflammation of the gastrointestinal tract that heavily burden daily life, result in surgery or other complications, and disrupt the gut microbiome. How IBD influences gut microbial ecology, especially biogeographic patterns of microbial location, and how the gut microbiota can use diet components and microbial metabolites to mediate disease, are still poorly understood. Many studies on diet and IBD in mice use a chemically induced ulcerative colitis model, despite the availability of an immune-modulated Crohn’s Disease model. Interleukin-10-knockout (IL-10-ko) mice on a C57BL/6 background, beginning at age 4 or 7 weeks, were fed either a control diet or one containing 10% (w/w) raw broccoli sprouts which was high in the sprout-sourced anti-inflammatory sulforaphane. Diets began 7 days prior to inoculation with Helicobacter hepaticus, which triggers Crohn’s-like symptoms in these immune-impaired mice, and ran for two additional weeks. Key findings of this study suggest that the broccoli sprout diet increases sulforaphane concentration in plasma; decreases weight stagnation, fecal blood, and diarrhea associated with enterocolitis; and increases microbiota richness in the gut, especially in younger mice. Sprout diets resulted in some anatomically specific bacterial communities in younger mice, and reduced the prevalence and abundance of potentially pathogenic or otherwise-commensal bacteria which trigger inflammation in the IL-10 deficient mouse, for example, Escherichia coli and Helicobacter. Overall, the IL-10-ko mouse model is responsive to a raw broccoli sprout diet and represents an opportunity for more diet-host-microbiome research.
Johanna HolmanInflammatory Bowel Diseases (IBD) are devastating conditions of the gastrointestinal tract with limited treatments, and dietary intervention may be effective, affordable, and safe for managing symptoms. Ongoing research has identified inactive compounds in broccoli sprouts, like glucoraphanin, and that mammalian gut microbiota play a role in metabolizing it to the anti-inflammatory sulforaphane. The objectives were to identify biogeographic location of participating microbiota and correlate that to health outcomes. We fed specific pathogen free C57BL/6 mice either a control diet or a 10% steamed broccoli sprout diet, and gave a three-cycle regimen of 2.5% dextran sodium sulfate (DSS) in drinking water over a 40-day experiment to simulate chronic, relapsing ulcerative colitis. We monitored body weight, fecal characteristics, fecal lipocalin, and sequenced bacterial communities from the contents and mucosa in the jejunum, cecum, and colon. Mice fed the broccoli sprout diet while receiving DSS performed better than mice fed the control diet while receiving DSS for all disease parameters, including significantly more weight gain (2-way ANOVA, p < 0.05), lower Disease Activity Index scores (2-way ANOVA, p < 0.001), and higher bacterial richness in all gut locations (linear regression model, p < 0.01 for all locations measured). Bacterial communities were assorted by gut location except in the mice receiving the control diet and DSS treatment (Beta-diversity, ANOVA, p < 0.05 for each). Importantly, our results suggested that broccoli sprout feeding completely abrogated the effects of DSS on gut microbiota, as bacterial communities were similar between mice receiving broccoli sprouts with and without DSS.
Timothy Hunt, Benjamin Hunt &
Marissa Kinney		A review of an early-life microbe considered missing from the industrialized world that is associated with later-life chronic disease and a related microbe used to treat chronic disease.
Inflammatory bowel diseases (IBD) cause dysfunction of the gastrointestinal (GI) tract and can result in hospitalization, suffering and disruption to overall health. Recent work has demonstrated the anti-inflammatory capacity of a broccoli sprout-diet in artificially-induced GI inflammation in pathogen free C57BL/6 mice. Microbiota samples obtained from the GI tract of these mice will be used to study the presence and activity of broccoli glucosinolate hydrolysis to create microbial-sourced bioactives, to further understand the relationship between broccoli-diets and inflammation reduction. It is imperative to validate or replicate qPCR protocols which have been established for glucosinolate metabolism in Bacteroides thetaiotaomicron (B. theta), in other bacterial species. Additionally, this project will focus on developing new growth curve assays for glucosinolate metabolism, as these methods are lacking in published literature.

Happening today: MSE symposium session on “Elevating human nutrition and microbiome practice”

sueishaqlabLeave a comment

The Microbes and Social Equity working group, and The University of Maine Institute of Medicine present a virtual symposium on:

“Living in a Microbial World”

June 5 – 9th, 2023.

Format: virtual meeting, Zoom platform.

The full program is here.

Session 4: Elevating human nutrition and microbiome practice

Thursday, June 8th, 11 am – 2:30 pm EST. Event has passed, watch the recorded talks.

Human nutrition research and practice provides a unique opportunity to provide equitable health and microbiome care, to engage with various communities, and to foster interdisciplinary research and educational programs. Given the complexity and nuance of evidence-based nutrition delivery, the guiding ideas of MSE can provide a conceptual structure. This session will present research and case studies which create a professional development framework, such that attendees can envision and learn to apply the framework to their own project / professional development.

Hosts and organizers:

Dr. Ashley M. Toney, Ph.D., Postdoctoral Research Fellow, Cleveland Clinic Lerner Research Institute. Translational/Clinical Nutrition Researcher focused on Latine Health Disparities.

Dr. Patricia Wolf, PhD, RD, Assistant Professor at Purdue University. Microbial Metabolism, Health Disparities Research, Nutrition and Dietetics

Dr. Sue Ishaq, PhD, Assistant Professor of Animal and Veterinary Science, School of Food and Agriculture, University of Maine. Animal microbiomes, diet and gut, microbes and social equity.

Speakers, 11~12:00 EDT:

Dr. Babajide Ojo (Jide)

Dr. Babajide Ojo (Jide), PhD. is currently a Postdoctoral Research Scientist in the Pediatric Gastroenterology department at Stanford University School of Medicine. His PhD research used models of diet-induced obesity to understand how whole foods modulate the gut microbiome to enhance intestinal homeostasis and systemic outcomes. Through his ongoing Postdoctoral training, Jide is working to understand how patient-derived colon organoids may recapitulate the metabolic and epigenetic anomalies in the epithelia of pediatric ulcerative colitis patients. Jide’s long-term research goals seek to understand how nutritional and microbial factors impact the metabolic and regenerative fate of intestinal stem cells.

“Beyond Fiber: Microbial Regulation of Anti-Nutritional Factors in Whole Foods to Benefit Intestinal Physiology”

Dr. Saria Lofton, PhD, RN, Assistant Professor, University of Illinois at Chicago, College of Nursing

Dr. Annabel Biruete, PhD, RD, is an Assistant Professor and Registered Dietitian in the Department of Nutrition Science at Purdue University and an Adjunct Assistant Professor in the Division of Nephrology at the Indiana University School of Medicine. Her broad clinical interest is nutrition in kidney diseases. Annabel’s research aims to study the effects of nutritional and pharmacological therapies for chronic kidney disease on the gastrointestinal tract and gut microbiome. Additionally, Annabel is interested in improving outcomes in the Hispanic/LatinX community living with chronic kidney disease, using language- and culturally-concordant lifestyle interventions.

Break, ~12:05 – 12:20 EDT

Panel Discussion, 12:20~13:00 EDT:

  • Whole food strategy versus targeted interventions
  • Multi-disciplinary approaches are needed. It’s not just about the gut- we need to think about other organs and systems biology, and with collaboration we can maximize animal use and preliminary data
  • Challenges of working with clinical populations, recruiting, keeping people engaged

Break, 3:00 – 13:15 EDT

Breakout room discussions, 13:15 ~ 14:30 EDT:

  1. Going from animal models to humans
  2. Challenges of clinical study
  3. TBD

Related to this session, here are recorded talks from previous MSE events:

Happening today: MSE symposium session on “Integrating food systems through microbes”

sueishaqlabLeave a comment

The Microbes and Social Equity working group, and The University of Maine Institute of Medicine present a virtual symposium on:

“Living in a Microbial World”

June 5 – 9th, 2023.

Format: virtual meeting, Zoom platform.

The full program is here.

Session 3: Integrating food systems through microbes

Wednesday, June 7th, 11 am – 2:30 pm EST. This event has passed, watch the recorded talks.

Microorganisms tie food systems together, from soil to food processing to gut to waste products, and microbes can be used to create sustainable food production while working with the natural ecosystem. Traditional ecological knowledge, place-based food systems, and food sovereignty endeavors have long known that integrated food systems require a broader definition of “health”. This session will explore how microbiota can be used to sustain and integrate food, communities, and ecosystems.

Hosts and organizers:

Dr. Tiff Mak (they/she), PhD, Postdoctoral Research Fellow at the Novo Nordisk Foundation Center for Biosustainability at DTU. They work at the intersection of Microbial Ecology, Fermentation and Integrated Food Systems, and are interested in community interaction dynamics and relationality, from the scale of the microbial to the planetary.

Dr. Sue Ishaq, PhD, Assistant Professor of Animal and Veterinary Science, School of Food and Agriculture, University of Maine. Animal microbiomes, diet and gut, microbes and social equity. Note, Sue helped host a little bit but Tiff put in 99.999% of the effort for organizing and running the event.

Speakers, 11~12:00 EDT:

Dr. Aviaja Lyberth Hauptmann

Dr. Aviaja Lyberth Hauptmann (she/her/hers) PhD., is an Inuk microbiologist from Kalaallit Nunaat (Greenland). After finishing her PhD in microbial metagenomics at the Technical University of Denmark in 2017 she returned to her birth-town Nuuk, to lead the research project the Greenland Diet Revolution. Her research centers the animal-sourced Indigenous diet of Inuit. The focus of the research is the human and microbial culture of Inuit foods, and how these foods connect our inside to our outside. Dr. Hauptmann is currently an assistant professor at Ilisimatusarfik – the University of Greenland and a part-time assistant professor at The University of Copenhagen.

Kolawole Banwo

Dr. Kolawole Banwo, PhD. is a Lecturer and Researcher in the Food Microbiology, Biotechnology and Safety Unit of the Department of Microbiology, University of Ibadan, Nigeria, where he teaches undergraduate and postgraduate courses on food microbiology, safety assessment, quality control and usefulness of food grade microorganisms. He mentors young academics in the area of food safety and quality assurance in his Department and University, and is passionate about food safety and volunteers on food safety education to artisanal fermented food producers and handlers. His current areas of research are exploration of the food microbiome of traditional fermented foods to increase potentials in bioactive components and the production of functional foods and the detoxification of mycotoxin and metabolites profile from traditional fermented foods in Nigeria using lactic acid bacteria and yeasts in collaboration with the Aflasafe Unit of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. Kolawole is passionate about food safety and volunteers on food safety education to artisanal fermented food producers and handlers. Dr Banwo holds a B.Sc and M.Sc degrees in General Microbiology, while his Ph.D. degree was in Food Microbiology from the University of Ibadan, Nigeria. He is a recipient of many awards locally and internationally. He was on a brief collaborative research visit in 2019 to the Department of Plant Sciences, North Dakota State University, Fargo, USA. He is a member of several microbiology professional bodies.

Dr. Nina Moeller, PhD, Associate Professor Research, Centre for Agroecology, Water and Resilience, Coventry University. Currently Associate Professor of Political Ecology and People’s Knowledge at Coventry University (UK) and a researcher in Sustainability Transitions at the University of Southern Denmark (SDU), she has a mixed academic background in philosophy, sociology and anthropology. Her research interests comprise the dynamics of sustainability transitions, including their unintended socio-ecological effects; diversity of knowledge and value systems; and more-than-human relations. Her interest in plant medicine, fermentation, traditional health and food systems goes beyond research and has been shaped in significant ways through friendships and exchanges with indigenous Amazonians and subsistence farmers across the world. She has worked in Latin America and Europe – as academic as well as consultant to indigenous federations, NGOs and the UN’s Food and Agriculture Organization

Break, ~12:05 – 12:20 EDT

Panel Discussion, 12:20~13:00 EDT:

  • Indigenous sovereignty on traditional fermented foods we want to research
  • Microbiota Vault Initiative
  • Style of agriculture tied to style of governance

Break, 3:00 – 13:15 EDT

Breakout room discussions, 13:15 ~ 14:30 EDT:

  1. Sovereignty on traditional foods research
  2. Food systems, governance, and sustainability
  3. TBD

Related to this session, here are recorded talks from previous MSE events:

Happening today: MSE symposium session on “Microbiomes and climate justice”

sueishaqlabLeave a comment

The Microbes and Social Equity working group, and The University of Maine Institute of Medicine present a virtual symposium on:

“Living in a Microbial World”

June 5 – 9th, 2023.

Format: virtual meeting, Zoom platform.

The full program is here.

Session 2: Microbiomes and climate justice

Tuesday, June 6th, 11 am – 2:30 pm EST. This session has passed, watch the recorded talks.

Social and economic activities have impacted microbes vital to the carbon cycle, while climate change has already begun to alter environmental microbiota. How do these reciprocal anthropogenic effects affect our health? How will such impacts follow our socio-economic fault-lines? This session will explore how we can use these links to inform communities, conservation movements, and policy.

Hosts and organizers:

Dr. Mike Friedman, PhD, MPH. Recently-retired Researcher and Lecturer in Ecology, Evolutionary Biology, and Health.

Dr. Erin Eggleston, PhD, Assistant Professor of Biology, Middlebury College. Molecular microbial ecology, cyanobacterial harmful algal blooms, T. gondii detection in shellfish, coral holobiont thermal resilience, environmental microbes and social equity, and microbial community members involved in mercury methylation in St. Lawrence River wetland sediments

Speakers, 11~12:00 EDT:

Arpita Bose

Dr. Arpita Bose, PhD., Associate Professor of Biology, Washington University in St. Louis. Her lab studies microbial metabolisms and their influence on biogeochemical cycling using an interdisciplinary approach. We apply the knowledge we gain to generate new ways of addressing issues such as the energy crisis, climate change, pollution, human health, sustainability and the circular economy.

Dr. Mallory Choudoir, PhD, Assistant Professor & Soil Microbiome Extension Specialist, Department of Plant & Microbial Biology, North Carolina State University. The goal of my research program is to translate microbiome science to sustainable agriculture and to develop microbial-centered solutions to agroecosystem challenges. 

TBD

Break, ~12:05 – 12:20 EDT

Panel Discussion, 12:20~13:00 EDT:

  • What’s the most pressing issue in your field?
  • Combining microbial ecology with climate models
  • We hear about ‘climate grief’, but what about ‘climate optimism’? What are some success stories?

Break, 3:00 – 13:15 EDT

Breakout room discussions, 13:15 ~ 14:30 EDT:

  1. Marine microbes
  2. Contradiction between research and activism
  3. TBD

Related to this session, here are recorded talks from previous MSE events:

The 2023 MSE Summer Symposium is just three weeks away!

sueishaqlabLeave a comment

The Microbes and Social Equity working group, and The University of Maine Institute of Medicine are presenting a virtual symposium on:

“Living in a Microbial World”

June 5 – 9th, 2023.

Register here! It is free, and required.

Format: virtual meeting, Zoom platform.

You can find the event page here. We update this with speaker information, changes to the schedule, and helpful links on a regulate basis.

Sessions format:

  • 5 min intro to the session and speakers
  • 3 consecutive 20-minute plenary style talks
  • 15 min break
  • 45 min panel discussion with speakers
  • 15 min break 
  • 60 minutes of breakout room discussions

Draft Program:

Session 1: Reconsidering ‘One Health’ Through Microbes

Monday, June 5th, 11 am – 2:30 pm EST.

Microbes and Social Equity concepts are based on the idea that microbes connect individuals, societies, and ecosystems. One Health & the Environment concepts are based on similar ideas of connectivity. This session will explore the connections between MSE and One Health, how microbiome research connects to One Health, and how we can broaden our own research to include other disciplines. The primary goals for this session are 1) to convene researchers in multiple disciplines and envision ways to work together, and 2) to collaboratively generate definitions of One Health & the Environment with respect to microbiomes.

Hosts and organizers:

Dr. Tiff Mak (they/she), PhD, Postdoctoral Research Fellow at the Novo Nordisk Foundation Center for Biosustainability at DTU. They work at the intersection of Microbial Ecology, Fermentation and Integrated Food Systems, and are interested in community interaction dynamics and relationality, from the scale of the microbial to the planetary.

Dr. Sue Ishaq, PhD, Assistant Professor of Animal and Veterinary Science, School of Food and Agriculture, University of Maine. Animal microbiomes, diet and gut, microbes and social equity.

Speakers:

Rob Beiko, PhD

Dr. Rob Beiko, PhD., is a Professor and Head of the Algorithms and Bioinformatics research cluster in the Faculty of Computer Science at Dalhousie University. His research aims to understand microbial diversity and evolution using machine learning, phylogenetics, time-series algorithms, and visualization techniques. His group is developing software tools and pipelines to comprehensively survey genes and mobile genetic elements in bacterial genomes, and understand how these genomes have been shaped by vertical inheritance, recombination, and lateral gene transfer. He is also a co-founder of Dartmouth Ocean Techonlogies, Inc., a developer of environmental DNA sampling devices.

Marta Scaglioni

Dr. Marta Scaglioni, PhD. is a Cultural Anthropologist and holds a PostDoc position at Cà Foscari University of Venice (Italy) within the frame of the ERC Project HealthXCross. She is interested in how microbiome research operates in the African continent and how microbial data, knowledge, and funding travel across national boundaries and across a Global North/Global South axis.

Dr. Lucilla Barchetta, PhD., is a Cultural Anthropologist and PhD in Urban Studies. She currently works as Postdoctoral Fellow within the ERC project Health X Cross based at the University Ca’ Foscari of Venice, where she studies One Health epistemologies and open data governance in multidisciplinary data-centric science and collaboration.

Related to this session, here are recorded talks from previous MSE events:

Session 2: Microbiomes and climate justice

Tuesday, June 6th, 11 am – 2:30 pm EST.

Social and economic activities have impacted microbes vital to the carbon cycle, while climate change has already begun to alter environmental microbiota. How do these reciprocal anthropogenic effects affect our health? How will such impacts follow our socio-economic fault-lines? This session will explore how we can use these links to inform communities, conservation movements, and policy.

Hosts and organizers:

Dr. Mike Friedman, PhD, MPH. Recently-retired Researcher and Lecturer in Ecology, Evolutionary Biology, and Health.

Dr. Erin Eggleston, PhD, Assistant Professor of Biology, Middlebury College. Molecular microbial ecology, cyanobacterial harmful algal blooms, T. gondii detection in shellfish, coral holobiont thermal resilience, environmental microbes and social equity, and microbial community members involved in mercury methylation in St. Lawrence River wetland sediments

Speakers:

Dr. Arpita Bose, PhD., Associate Professor of Biology, Washington University.

Dr. Mallory Choudoir, PhD, Assistant Professor & Soil Microbiome Extension Specialist, Department of Plant & Microbial Biology, North Carolina State University. The goal of my research program is to translate microbiome science to sustainable agriculture and to develop microbial-centered solutions to agroecosystem challenges. 

TBD

Related to this session, here are recorded talks from previous MSE events:

Session 3: Integrating the food systems through microbes

Wednesday, June 7th, 11 am – 2:30 pm EST.

Microorganisms tie food systems together, from soil to food processing to gut to waste products, and microbes can be used to create sustainable food production while working with the natural ecosystem. Traditional ecological knowledge, place-based food systems, and food sovereignty endeavors have long known that integrated food systems require a broader definition of “health”. This session will explore how microbiota can be used to sustain and integrate food, communities, and ecosystems.

Hosts and organizers:

Dr. Tiff Mak (they/she), PhD, Postdoctoral Research Fellow at the Novo Nordisk Foundation Center for Biosustainability at DTU. They work at the intersection of Microbial Ecology, Fermentation and Integrated Food Systems, and are interested in community interaction dynamics and relationality, from the scale of the microbial to the planetary.

Dr. Sue Ishaq, PhD, Assistant Professor of Animal and Veterinary Science, School of Food and Agriculture, University of Maine. Animal microbiomes, diet and gut, microbes and social equity.

Speakers:

Dr. Aviaja Lyberth Hauptmann

Dr. Aviaja Lyberth Hauptmann (she/her/hers) PhD., is an Inuk microbiologist from Kalaallit Nunaat (Greenland). After finishing her PhD in microbial metagenomics at the Technical University of Denmark in 2017 she returned to her birth-town Nuuk, to lead the research project the Greenland Diet Revolution. Her research centers the animal-sourced Indigenous diet of Inuit. The focus of the research is the human and microbial culture of Inuit foods, and how these foods connect our inside to our outside. Dr. Hauptmann is currently an assistant professor at Ilisimatusarfik – the University of Greenland and a part-time assistant professor at The University of Copenhagen.

Dr. Nina Moeller, PhD, Associate Professor Research, Centre for Agroecology, Water and Resilience, Coventry University. Currently Associate Professor of Political Ecology and People’s Knowledge at Coventry University (UK) and a researcher in Sustainability Transitions at the University of Southern Denmark (SDU), she has a mixed academic background in philosophy, sociology and anthropology. Her research interests comprise the dynamics of sustainability transitions, including their unintended socio-ecological effects; diversity of knowledge and value systems; and more-than-human relations. Her interest in plant medicine, fermentation, traditional health and food systems goes beyond research and has been shaped in significant ways through friendships and exchanges with indigenous Amazonians and subsistence farmers across the world. She has worked in Latin America and Europe – as academic as well as consultant to indigenous federations, NGOs and the UN’s Food and Agriculture Organization

Kolawole Banwo

Dr. Kolawole Banwo, PhD. is a Lecturer and Researcher in the Food Microbiology, Biotechnology and Safety Unit of the Department of Microbiology, University of Ibadan, Nigeria, where he teaches undergraduate and postgraduate courses on food microbiology, safety assessment, quality control and usefulness of food grade microorganisms. He mentors young academics in the area of food safety and quality assurance in his Department and University, and is passionate about food safety and volunteers on food safety education to artisanal fermented food producers and handlers. His current areas of research are exploration of the food microbiome of traditional fermented foods to increase potentials in bioactive components and the production of functional foods and the detoxification of mycotoxin and metabolites profile from traditional fermented foods in Nigeria using lactic acid bacteria and yeasts in collaboration with the Aflasafe Unit of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. Kolawole is passionate about food safety and volunteers on food safety education to artisanal fermented food producers and handlers. Dr Banwo holds a B.Sc and M.Sc degrees in General Microbiology, while his Ph.D. degree was in Food Microbiology from the University of Ibadan, Nigeria. He is a recipient of many awards locally and internationally. He was on a brief collaborative research visit in 2019 to the Department of Plant Sciences, North Dakota State University, Fargo, USA. He is a member of several microbiology professional bodies.

Related to this session, here are recorded talks from previous MSE events:

Session 4: Elevating human nutrition and microbiome practice

Thursday, June 8th, 11 am – 2:30 pm EST.

Human nutrition research and practice provides a unique opportunity to provide equitable health and microbiome care, to engage with various communities, and to foster interdisciplinary research and educational programs. Given the complexity and nuance of evidence-based nutrition delivery, the guiding ideas of MSE can provide a conceptual structure. This session will present research and case studies which create a professional development framework, such that attendees can envision and learn to apply the framework to their own project / professional development.

Hosts and organizers:

Dr. Ashley M. Toney, Ph.D., Postdoctoral Research Fellow, Cleveland Clinic Lerner Research Institute. Translational/Clinical Nutrition Researcher focused on Latine Health Disparities.

Dr. Patricia Wolf, PhD, RD, Assistant Professor at Purdue University. Microbial Metabolism, Health Disparities Research, Nutrition and Dietetics

Dr. Sue Ishaq, PhD, Assistant Professor of Animal and Veterinary Science, School of Food and Agriculture, University of Maine. Animal microbiomes, diet and gut, microbes and social equity.

Speakers:

Dr. Annabel Biruete, PhD, RD, is an Assistant Professor and Registered Dietitian in the Department of Nutrition Science at Purdue University and an Adjunct Assistant Professor in the Division of Nephrology at the Indiana University School of Medicine. Her broad clinical interest is nutrition in kidney diseases. Annabel’s research aims to study the effects of nutritional and pharmacological therapies for chronic kidney disease on the gastrointestinal tract and gut microbiome. Additionally, Annabel is interested in improving outcomes in the Hispanic/LatinX community living with chronic kidney disease, using language- and culturally-concordant lifestyle interventions.

Dr. Babajide A. Ojo, PhD, Postdoc in the Pediatric Gastroenterology department at Stanford Medicine

TBD

Related to this session, here are recorded talks from previous MSE events:

Session 5: MSE Member Research Showcase

Friday, June 9th, 11 am – 2:30 pm EST.

Session hosts and organizers: Emily Wissel, Curtis Tilves

Session Scope: MSE members will be sharing their own work in short presentations to showcase the variety of disciplines of our members’ work. The presentation list will include students and non-researchers, and research on microbiomes, people, ecosystems, and more even if it is not related to microbes and/or social equity.

Abstracts will be made available in late May.

Planning committee:

  • Sue Ishaq (Lead Organizer), Tiff Mak, Ashley Toney, Gwynne Mhuireach, Rachel Gregor, Carla Bonilla, Erica Gardner, Emily Wissel, Kieran O’Doherty, Erin Eggleston, Mike Friedman, McK Mollner, Erica Diaz-Almeyda, Curtis Tilves, Patrick Horve, Leslie Dietz.
  • Organizing administrative support: Cecile Ferguson, UMaine Institute of Medicine 

The Microbes and Social Equity Working Group is grateful to the University of Maine and the UMaine Institute of Medicine for providing financial and material support for this virtual meeting.

Upcoming presentations at the American Society for Nutrition conference

sueishaqlabLeave a comment

The Ishaq Lab will be presenting at a few research conferences this summer, with a few more in the works for the fall.

Broccoli sprouts in a tray

American Society for Nutrition meeting, July 22-25, 2023, Boston, Massachusetts

Steamed broccoli sprouts alleviate gut inflammation and retain gut microbiota against DSS-induced dysbiosis.

Poster, abstract P20-022-23, July 23

Authors: Johanna M. Holman*1, Lola Holcomb2, Louisa Colucci3, Dorien Baudewyns4, Joe Balkan5, Grace Chen6, Peter L. Moses7,8, Gary M. Mawe7, Tao Zhang9, Yanyan Li1, Suzanne L. Ishaq1

Affiliations: 1 School of Food and Agriculture, University of Maine, 2 Graduate School of Biomedical Sciences and Engineering, University of Maine, 3 Department of Biology, Husson University, 5 Department of Chemical and Biological Engineering, Tufts University, 6 Department of Internal Medicine, University of Michigan Medical School, 7 Departments of Neurological Sciences and of Medicine, Larner College of Medicine, University of Vermont, 8 Finch Therapeutics, 9 School of Pharmacy and Pharmaceutical Sciences, SUNY Binghamton University.

Objectives: Inflammatory Bowel Diseases (IBD) are devastating conditions of the gastrointestinal tract with limited treatments, and dietary intervention may be effective, affordable, and safe for managing symptoms. Ongoing research has identified inactive compounds in broccoli sprouts, like glucoraphanin, and that mammalian gut microbiota play a role in metabolizing it to the anti-inflammatory sulforaphane. The objectives were to identify biogeographic location of participating microbiota and correlate that to health outcomes. 

Methods: We fed specific pathogen free C57BL/6 mice either a control diet or a 10% steamed broccoli sprout diet, and gave a three-cycle regimen of 2.5% dextran sodium sulfate (DSS) in drinking water over a 40-day experiment to simulate chronic, relapsing ulcerative colitis. We monitored body weight, fecal characteristics, fecal lipocalin, and sequenced bacterial communities from the contents and mucosa in the jejunum, cecum, and colon. 

Results: Mice fed the broccoli sprout diet while receiving DSS performed better than mice fed the control diet while receiving DSS for all disease parameters, including significantly more weight gain (2-way ANOVA, p < 0.05), lower Disease Activity Index scores (2-way ANOVA, p < 0.001), and higher bacterial richness in all gut locations (linear regression model, p < 0.01 for all locations measured). Bacterial communities were assorted by gut location except in the mice receiving the control diet and DSS treatment (Beta-diversity, ANOVA, p < 0.05 for each). Importantly, our results suggested that broccoli sprout feeding completely abrogated the effects of DSS on gut microbiota, as bacterial communities were similar between mice receiving broccoli sprouts with and without DSS. 

Conclusions: Spatially resolved microbial communities provide greater insight when investigating host-microbe interactions. Here, we show that a 10% broccoli sprout diet protects mice from the negative effects of dextran sodium sulfate induced colitis, that colitis erases biogeographical patterns of bacterial communities in the gut, and that the cecum is not likely to be a significant contributor to colonic bacteria of interest in the DSS mouse model of ulcerative colitis. 

Funding Sources: This work was funded by the NIH, USDA, NSF NRT, and UMaine GSBSE.

 

Early life exposure to broccoli sprouts confers stronger protection against enterocolitis development in an immunological mouse model of inflammatory bowel disease.

Poster, abstract P20-021-23, July 23

Authors: Lola Holcomb*1, Johanna Holman2, Molly Hurd3, Brigitte Lavoie3, Louisa Colucci4, Gary M. Mawe3, Peter L. Moses3,5, Emma Perry6, Allesandra Stratigakis7, Tao Zhang7, Grace Chen8, Suzanne L. Ishaq1, Yanyan Li1

1 Graduate School of Biomedical Sciences and Engineering, University of Maine, 2 School of Food and Agriculture, University of Maine, 3 Larner College of Medicine, University of Vermont, 4 Department of Biology, Husson University, 5 Finch Therapeutics, 6 Electron Microscopy Laboratory, University of Maine, 7 School of Pharmacy and Pharmaceutical Sciences, SUNY Binghamton University, 8 Department of Internal Medicine, University of Michigan Medical School.

Objectives: Inflammatory Bowel Diseases (IBD) are chronic conditions characterized by inflammation of the gastrointestinal (GI) tract that burden daily life, result in complications, and disrupt the gut microbiome. Many studies on diet and IBD in mice use an ulcerative colitis model, despite the availability of an immune-modulated Crohn’s Disease model. The objective of this study was to establish IL-10 deficient mice as a model for studying the role of dietary broccoli and broccoli bioactives in reducing inflammation, modifying the immune response, and supporting GI tract microbial systems. 

Methods: Interleukin-10-knockout (IL-10-ko) mice on a C57BL/6 background, beginning at age 4 or 7 weeks, were fed either a control diet or one containing 10% raw broccoli sprouts. Diets began 7 days prior to inoculation with Helicobacter hepaticus, which triggers Crohn’s-like symptoms in these immune-impaired mice, and ran for 2 additional weeks. 

Results: Broccoli sprouts decreased (p < 0.05), fecal lipocalin (LCN2), a biomarker for intestinal inflammation, and fecal blood, diarrhea, and overall Disease Activity Index. Sprouts increased gut microbiota richness, especially in younger mice (p < 0.004), and recruited different communities in the gut (B-diversity, ANOVA, p < 0.001), especially in the colon (B-diversity, ANOVA, p = 0.03). The control group had greater prevalence and abundance of otherwise commensal bacteria which trigger inflammation in the IL-10-ko mice. Helicobacter was within the top-5 most prevalent core genera for the control group, but was not within the top-5 for the broccoli group. Disease parameters and microbiota changes were more significant in younger mice receiving broccoli.

Conclusions : A diet containing 10% raw broccoli sprouts may be protective against negative disease characteristics of Helicobacter-induced enterocolitis in IL-10-ko mice, and younger age is the most significant factor (relative to diet and anatomical location) in driving gut bacterial community richness and similarity. The broccoli diet contributes to prevalence and abundance of bacterial genera that potentially metabolize dietary compounds to anti-inflammatory metabolites in the gut, are bacteriostatic against pathogens, and may ease disease severity.

Funding Sources: This work was funded by the NIH, USDA, NSF NRT, and UMaine GSBSE.

Establishing Growth Curve Assays for Bacterial Glucosinolate Metabolism: A Study Protocol

Poster, abstract P22-030-23, July 23

Marissa Kinney*1, Ryan Wijayanayake1, Johanna Holman1, Timothy Hunt2, Benjamin Hunt 2, Tao Zhang3, Grace Chen4, Yanyan Li1 , Suzanne L. Ishaq1

1School of Food and Agriculture, University of Maine, Orono, Maine, USA 04469; 2 School of Biology and Ecology, University of Maine, Orono, Maine, USA 04469; 3 School of Pharmacy and Pharmaceutical Sciences, SUNY Binghamton University, Johnson City, New York, USA 13790; 4 Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA 48109 

Objective: Inflammatory bowel diseases (IBD) cause dysfunction of the gastrointestinal (GI) tract and can result in hospitalization, suffering and disruption to overall health. Recent work has demonstrated the anti-inflammatory capacity of a broccoli sprout-diet in artificially-induced GI inflammation in pathogen free C57BL/6 mice. Microbiota samples obtained from the GI tract of these mice will be used to study the presence and activity of broccoli glucosinolate hydrolysis to create microbial-sourced bioactives, to further understand the relationship between broccoli-diets and inflammation reduction. It is imperative to validate or replicate qPCR protocols which have been established for glucosinolate metabolism in Bacteroides thetaiotaomicron (B. theta), in other bacterial species. Additionally, this project will focus on developing new growth curve assays for glucosinolate metabolism, as these methods are lacking in published literature. 

Methods: Pathogen free C57BL/6 mice were given dextran sodium sulfate (DSS) into their drinking water to create a disease profile similar in development and morphology to human ulcerative colitis (UC), a type of IBD. DSS and a steamed broccoli sprout diet were administered. Samples were taken from the digesta, jejunum, cecum, and colon of mice fed broccoli diets. About 806 bacterial isolates will be grown up/cultured anaerobically on minimal/selective media containing glucosinolate-related compounds (glucoraphanin, sinigrin) to determine hydrolysis activity via spectroscopy to measure optical density of growth in competent isolates. Successful isolates will be further analyzed with LC/MS to confirm production of bioactive products, and with qPCR using the B. theta positive control genome to help identify gene targets (α-1,6-mannanase, glycosyl hydrolase, nicotinamide-dependent oxidoreductase, and transcriptional regulator protein) for glucosinolate conversion in isolates. 

Results  N/A

Conclusions: In the initial study from which these samples are sourced, mice fed a broccoli diet had less inflammation than those fed a control diet and DSS, and had higher bacterial diversity in their gut. We expect that bacteria isolated from the GI of broccoli-fed mice will contain more glucosinolate-metabolizing genes.

Funding: NIH (Li and Ishaq) and USDA (Li). 

Broadening Perspectives by Situating Nutrition Education in Broader Social Contexts: A Study Protocol

Poster, abstract number 1490287, July 23

Authors: Ashley Toney*1, Patricia Wolf*2, Sue Ishaq*3

Affiliations: 1Dept. of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, 2 Department of Nutrition Science, Purdue University, 3 School of Food and Agriculture, University of Maine

Objectives: The Microbes and Social Equity (MSE) Working Group connects microbiology with social equity research, education, policy, and practice to understand the interplay of microorganisms, individuals, societies, and ecosystems. Given the complexity and nuance of evidence-based nutrition delivery, MSE sought to provide a conceptual structure. The goals are 1) convene diverse researchers, educators, learners, and practitioners, 2) publish and present evidence-based information within socio-cultural contexts, and 3) teach audiences to define ways for integrating equity into their work.

Methods: MSE hosted a 14-week speaker series in 2021, 2022, and 2023, with researchers from various disciplines (e.g., nutrition, gut microbes, food security). The series lead into a 5-day symposium of speakers and guided discussions to generate co-written documents identifying research needs and resources. We use targeted and non-targeted event promotion to attract audiences, and reach/impact is evaluated through registration, attendance, social media views, or attendee feedback. The series provides learning sessions that build concepts over time, guiding attendees past the conceptual roadblock of being new to interdisciplinary research and grappling with grand challenges. This extended period to learn stimulates participation in activity-based collaboration during symposia, even from new members or students. 2023 symposium attendees will be surveyed on their impressions on the event, how it impacted their perspective on experimental design, whether attendees started with the series and followed up with the symposium, and whether having the preface of the series aided in being able to create actionable outputs in a guided co-working session.

Results: n/a

Conclusions: Benefits include nuanced knowledge/perspective sharing, establishing and nurturing interdisciplinary collaboration, and sparking conversations on critical topics in policy, sustainability, host and microbial metabolism, etc. In the last 3 years, MSE published 4 papers together, with ~ 50 independent papers from members. Event recordings are used as curriculum in nutrition, microbiology, and pre-med biology.

Funding Sources: NIH/NIDDK, Allen Foundation (Ishaq); National Dairy Council (Toney)