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Elizabeth P. Ryan, Ph.D.

Associate Professor,
Radiation Cancer Biology and Oncology

Office: 338 Anatomy and Zoology (East)
Office Phone: 970-491-1536


Dr. Ryan's PubMed Publications

Dr. Ryan's Laboratory Page


Dr. Ryan is an Associate Professor in the Radiation Cancer Biology and Oncology section of ERHS. Her research explores the complex interactions of food components with gut microbiota and the immune system. Her interests span both enteric disease and cancer control and prevention, with collaborators and translational application to the broader fields of microbiology, immunology, oncology, pediatrics, and nutrition. Dr. Ryan's global health research program also includes developing innovative solutions to food systems that will enhance food security. The multi-platform research strategy for the research group covers molecular biology, laboratory animal models, companion animals, and human trials. She also holds joint appointments with the department of Food Science and Human Nutrition at CSU, the Colorado School of Public Health, and the Unviersity of Colorado Cancer Center.


Ph.D.: Molecular Toxicology and Environmental Medicine, The University of Rochester School of Medicine and Dentistry, Rochester, NY: 2006

M.S.: Molecular Toxicology and Environmental Medicine, The University of Rochester School of Medicine and Dentistry, Rochester, NY: 2003

B.S.: Environmental Science and Biology, Bowling Green State University, Bowling Green, OH: 1996

Species Interest

Mixed Animal (large and small)

Selected Publications

Genevieve Forster, Nora Jean Nealon, John Bauer, Dale Hill, Tracey Jensen, Teva Stone and Ryan E.P. Navy and black bean-based dog foods are digestible during weight loss in overweight and obese adult companion dogs. Journal of Applied Animal Nutrition (accepted, in press)

Mapesa JO, Maxwell AL, Ryan E. P. 2015. An Exposome Perspective to Environmental Enteric Dysfunction. Environ Health Perspect. Published: Dec. 29, 2015 [Epub ahead of print].

Kinyuru JN, Borresen EC, Ryan EP. 2015. Nutritional and Safety Evaluation of Heat-Stabilized Rice Bran for Supplementary Feeding of Malnourished Children in Kenya. Int J Food Sci Nutr Diet. 04(6), 226-232. Published: November 12, 2015.

Xingdong Yang, Erica Twitchell, Guohua Li, Ke Wen, Mariah Weiss, Jacob Kocher, Shaohua Lei, Ashwin Ramesh, Elizabeth Ryan, and Lijuan Yuan. (2015). High protective efficacy of rice bran against human rotavirus diarrhea via enhancing probiotic growth, gut barrier function, and innate immunity". Scientific Reports. 5:15004. Published: October 13, 2015.

Goodyear, AG. Kumar, A. Ehrhart, EJ., Swanson, KS., Grusak, MA., Leach, JE. Dow SW., McClung A., and Ryan EP. 2015. Dietary rice bran supplementation differentially prevents Salmonella colonization across varieties and by priming intestinal immunity. Journal of Functional Foods. October; 18 Part A: 653-664.

Sarah L McKune; Erica C Borresen; Alyson G Young; Thérèse D Ryley; Sandra L Russo; Astou D Camara; Meghan M Coleman; Elizabeth P. Ryan. (2015). Climate change through a gendered lens: examining livestock holder food security. Global Food Security, 6:1-8.

Forster GM, Heuberger AL, Broeckling CD, Bauer JE, and Ryan EP (2015). Consumption of Cooked Navy Bean Powders Modulate the Canine Fecal and Urine Metabolome, Current Metabolomics 3(2): 90-101.

Luke Allen Schwerdtfeger, Elizabeth P Ryan, Stuart A. Tobet. An Organotypic Slice Model For Ex Vivo Study of Neural, Immune and Microbial Interactions of Mouse Intestine. American Journal of Physiology - Gastrointestinal and Liver Physiology Published 17 December 2015 Vol. no. DOI: 10.1152/ajpgi.00299.2015

Sheflin AM, Borresen EC, MJ Wdowik, S Rao, RJ Brown, AL Heuberger, CD Broeckling, TL Weir, EP Ryan (2015) Pilot Dietary Intervention with Heat-Stabilized Rice Bran Modulates Stool Microbiota and Metabolites in Healthy Adults, Nutrients, 7, 1282-1300; doi:10.3390/nu7021282.

Forster GM, Brown DG, Dooley GP, Page RL, Ryan EP (2014) Multiresidue Analysis of Pesticides in Urine of Healthy Adult Companion Dogs, Environmental Science & Technology, DOI: 10.1021/es503764s.

Borresen, E., Gundlach, KD., Wdowik, M., Brown, R., & Ryan, EP (2014) A pilot feasibility, randomized control trial for colon cancer control and prevention, Special Issue “Dietary Habits, Behaviors and Practices in Relation to Cancer.” Current Food and Nutrition, 10(2): 112-119.

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