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Anna Mae Diehl

Florence McAlister Distinguished Professor of Medicine
Medicine, Gastroenterology
Duke Box 3256, 905 S. LaSalle Street, GSRB 1, Durham, NC 27710
Ste 1073, GSRB 1, 595 LaSalle Street, Durham, NC 27710

Overview


Our lab has a long standing interest in liver injury and repair. To learn more about the mechanisms that regulate this process, we study cultured cells, animal models of acute and chronic liver damage and samples from patients with various types of liver disease. Our group also conducts clinical trials in patients with chronic liver disease. We are particularly interested in fatty liver diseases, such as alcoholic fatty liver disease and nonalcoholic fatty liver disease (NAFLD).

Research by our group has advanced understanding in two main areas: 1) immune system regulation of liver injury and regeneration and 2)the role of fetal morphogens, such as the hedgehog pathway, in regulating fibrotic responses to liver damage. Our basic research programs have been enjoyed continuous NIH support since 1989. We welcome students, post-doctoral fellows and visiting scientists who have interests in this research area to contact us about training opportunities and potential collaborations.

Since 2001 we have also been an active participant in the NIDDK-funded Nonalcoholic Steatohepatitis Clinical Research Network (NASH CRN), a national consortium comprised of 8 university medical centers selected to generate a national registry for patients with NAFLD and to conduct multicenter treatment trials for this disorder. We are actively recruiting patients for this program, as well as a number of other industry-supported NAFLD studies.

Current Appointments & Affiliations


Florence McAlister Distinguished Professor of Medicine · 2005 - Present Medicine, Gastroenterology, Medicine
Professor of Medicine · 2004 - Present Medicine, Gastroenterology, Medicine
Member of the Duke Cancer Institute · 2004 - Present Duke Cancer Institute, Institutes and Centers
Affiliate of the Duke Regeneration Center · 2021 - Present Duke Regeneration Center, Basic Science Departments

In the News


Published July 1, 2024
Liver Damage from Stress and Aging Might Be Reversible
Published October 29, 2018
Our Microbes Are Starving, and That’s a Good Thing

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Recent Publications


Cellular senescence in liver diseases: From molecular drivers to therapeutic targeting.

Journal Article J Hepatol · January 2026 Obesity, metabolic syndrome, and aging are major contributors to the rising global burden of chronic liver diseases. Among these, aging remains an often underrecognised driver that intersects with other metabolic and environmental insults to exacerbate liv ... Full text Link to item Cite

Elevated Homocysteine is Associated With Liver Fibrosis in Metabolic Dysfunction-Associated Steatotic Liver Disease in a Sex- and Menopause-Specific Manner.

Journal Article Gastro Hep Adv · 2026 BACKGROUND AND AIMS: Elevated hepatic homocysteine (Hcy) contributes to hepatic inflammation and fibrogenesis in metabolic dysfunction-associated steatotic liver disease (MASLD). We aimed to evaluate the association between serum Hcy levels and the risk of ... Full text Link to item Cite

cGAS Inhibits ALDH2 to Suppress Lipid Droplet Function and Regulate MASLD Progression.

Journal Article Adv Sci (Weinh) · December 2025 Cyclic GMP-AMP synthase (cGAS) is a cytosolic DNA sensor essential for host defense against microbial infections, but its role beyond innate immunity remains unclear. Here, a non-canonical function of cGAS in regulating aldehyde metabolism and lipid homeos ... Full text Link to item Cite
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Recent Grants


2/3 CTSA K12 Program at Duke University

ResearchMentor · Awarded by National Institutes of Health · 2025 - 2030

TNF alpha and Recovery from Alcoholic Liver Injury

ResearchPrincipal Investigator · Awarded by National Institutes of Health · 2014 - 2030

Targeting Hepatocyte Senescence to Improve NAFLD

ResearchMentor · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2024 - 2029

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Education, Training & Certifications


Georgetown University · 1978 M.D.