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Podcasts of the American Journal of Physiology-Gastrointestinal and Liver Physiology
Episodes
Wednesday Dec 14, 2022
Wednesday Dec 14, 2022
In this podcast authors Prof D. Mark Pritchard and Dr. Carrie Duckworth of the University of Liverpool, discuss their recently published manuscript “Nfkb2 deficiency and its impact on plasma cells and immunoglobulin expression in murine small intestinal mucosa” with Editor-in-Chief Prof. Mark Frey. Novel transcriptomic analysis of murine proximal intestinal mucosa revealed an unexpected B cell signature in Nfkb2-/- mice. In depth analysis revealed a defect in the CD38+ B cell population and a gut-specific dysregulation of immunoglobulin levels. Take a listen to this latest podcast today!
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Friday Dec 09, 2022
Friday Dec 09, 2022
In our latest podcast senior author Dr. Rhonda Souza discusses her latest published research “A Human Barrett's Esophagus Organoid System Reveals Epithelial-Mesenchymal Plasticity Induced by Acid and Bile Salts” with Editor-in-Chief Prof. Mark Frey. Using Barrett's esophagus (BE) biopsies, the authors established organoids recapitulating key BE features. During early stages of organoid development, a GERD-like wound environment induced features of epithelial-mesenchymal plasticity (EMP) in Barrett's progenitor cells, suggesting that reflux-induced EMP can enable Barrett's cells to migrate underneath squamous epithelium to form subsquamous intestinal metaplasia, a condition that may underlie Barrett's cancers that escape detection by endoscopic surveillance, and recurrences of Barrett's metaplasia following endoscopic eradication therapy.
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Monday Nov 21, 2022
Monday Nov 21, 2022
In this podcast, coauthors Dr. Huajun Han, and Prof. Robert S. Chapkin of Texas A&M University, discuss their recently published research "Loss of aryl hydrocarbon receptor suppresses the response of colonic epithelial cells to IL22 signaling by upregulating SOCS3" with Editor-in-Chief Prof. Mark Frey. Data from their preclinical orthogonal models indicate that AhR signaling modulates the response of colonic epithelial cells to IL22, resulting in the suppression of carcinogen-associated colon tumorigenesis. These findings provide rationale for targeting AhR as a means of ameliorating IBD and reducing colon cancer risk. Take a listen today!
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Tuesday Oct 04, 2022
Tuesday Oct 04, 2022
In today’s episode Dr. Stephen Keely from the Royal College of Surgeons in Ireland and Prof Kim Barrett of the University of California, Davis talk about their recent review article “Mechanisms of Secretory Diarrhea” with Prof Mark Frey. They discuss why it is we need to talk more about diarrheal diseases, lift the lid on the complex cellular and molecular mechanisms involved, and look to where new therapeutics are likely to arise in the future.
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Wednesday Jul 20, 2022
Wednesday Jul 20, 2022
In a rapidly evolving era of single cell technologies, the authors of "Stiffness is associated with hepatic stellate cell heterogeneity during liver fibrosis" explain the mechanism of an amplification loop during liver fibrosis. By deciphering how stiffness macro and microscopic heterogeneity promote differential gene expression in hepatic stellate cell sub-populations, the authors find a novel stiffness-promoted molecule involved in liver fibrosis progression. Get to know authors Dr. Enis Kostallari and Dr. Vijay Shah of the Mayo Clinic as they discuss their recently published manuscript and what life is like as a researcher with Editor-in-Chief Professor Mark Frey.
https://journals.physiology.org/journal/ajpgi
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Friday Jun 24, 2022
Friday Jun 24, 2022
Get to know senior author Dr. Liara M. Gonzalez of North Carolina State University as she discusses the recently published paper entitled "HOPX+ injury-resistant intestinal stem cells drive epithelial recovery after severe intestinal ischemia" with EIC Prof. Mark Frey. This paper supports that rISCs are resistant to ischemic injury and likely an important source of cellular renewal following near-complete epithelial loss. Furthermore, the authors have evidence that HOPX controls ISC activity state and may be a critical signaling pathway during ISC-mediated repair. Finally, they use multiple novel methods to evaluate ISCs in a translationally relevant large animal model of severe intestinal injury and provide evidence for the potential role of rISCs as therapeutic targets.
Amy Stieler Stewart, Cecilia Renee Schaaf, Jennifer A. Luff, John M. Freund, Thomas C. Becker, Sara R. Tufts, James B. Robertson, and Liara M. Gonzalez
Friday May 13, 2022
Friday May 13, 2022
Looking for a new pharmacological approach to treat gastrointestinal motility disorders?
In this podcast authors Dr. Daniel Poole and Dr. Simona Carbone of Monash University discuss their recent paper, where they investigated the therapeutic potential of a positive allosteric modulator to enhance endogenous delta-opioid receptor signaling in the gut. Take a listen today!
Jesse J. DiCello, Simona E. Carbone, Ayame Saito, Vi Pham, Agata Szymaszkiewicz, Arisbel B. Gondin, Sadia Alvi, Kiliana Marique, Priyank Shenoy, Nicholas A. Veldhuis, Jakub Fichna, Meritxell Canals, Arthur Christopoulos, Celine Valant, and Daniel P. Poole
Thursday Apr 28, 2022
Thursday Apr 28, 2022
Three investigators at Children's Hospital Los Angeles, Nandini Girish, Dr. Cambrian Liu, and Dr. Brent Polk, talk about their recent work to visualize the fates and functions of epithelial stem cells in models of inflammatory bowel disease with Editor-in-Chief Professor Mark Frey. The investigators discuss their diverse backgrounds, reveal how they started the work, and begin a spirited debate on the relative values of minivans and dogs and cats.
Check out the manuscript associated with this podcast here:
Friday Apr 15, 2022
Friday Apr 15, 2022
Many times we read a manuscript but don’t really get to know the amazing author behind the great science. Behind those black typewritten letters that spell a scientists name lies a person that is usually creative, intelligent, quirky, and fun. This is certainly the case with the author of “Use of human tissue stem cell-derived organoid cultures to model enterohepatic circulation”, Dr. Sarah Blutt. Please listen in as we learn a little bit about one of the fields Organoid Divas and what makes her tick as we discuss organoids as a biological toll booth and other topics.
Check out the manuscript associated with this podcast here: https://doi.org/10.1152/ajpgi.00177.2021
Monday Mar 28, 2022
Monday Mar 28, 2022
Welcome to AJP- Gastrointestinal Liver’s Physiology’s Podcast series, Got Guts? Our first episode is a joint effort with Dr. Pradeep Dudeja, Chair of the GI and Liver Section and Dr. Karen Edelblum, Chair of GI and Liver Program Committee with host Editor-In-Chief, Professor Mark Frey. In this podcast we will be talking about all things Experimental Biology 2022. For more information on Experimental Biology 2022 please go to www.experimentalbiology.org . To learn more about the journal and section please go to www.physiology.org. If you are interested in submitting a manuscript and have questions, please email Jami Jones at jjones@physiology.org