Protein That Protects During Stress Sheds Light on How Diabetes Drug Prevents Tumors

Researchers at University of California San Diego School of Medicine have identified a previously unknown mechanism that helps fortify the structure and tight junctions between epithelial cells — a basic cell type that lines various body cavities and organs throughout the body, forming a protective barrier against toxins, pathogens and inflammatory triggers. Breaches of this barrier can provoke organ dysfunction and development of tumors.

The findings, published online in the current issue of eLife by senior author Pradipta Ghosh, MD … Read the Full Story from the UC San Diego Newsroom


Dr. Pradipta Ghosh

Pradipta Ghosh, MD

Pradipta Ghosh, MD, MBBS, is Professor of Medicine in the Division of Gastroenterology.

She is a graduate of the UC San Diego Internal Medicine Residency Training Program, the Gastroenterology Fellowship Training Program and the Department of Medicine Physician-Scientist Training Program.

Enzyme Restores Function with Diabetic Kidney Disease

Mouse findings reverse prevailing theory; point to potential treatment options

Researchers at the University of California, San Diego School of Medicine say that, while a prevailing theory suggests elevated cellular levels of glucose ultimately result in diabetic kidney disease, the truth may, in fact, be quite the opposite. The findings could fundamentally change understanding of how diabetes-related diseases develop – and how they might be better treated. … Read the full story from the UC San Diego News Center


Kumar Sharma, MD, FAHA Kumar Sharma, MD, FAHA, senior author of the study report, is professor of medicine and director of the Center for Renal Translational Medicine in the Division of Nephrology-Hypertension.

Dr. Laura DuganFirst author Laura L. Dugan, MD, at right, is professor of neurosciences and professor and chief of the Division of Geriatrics in the Department of Medicine. She holds the Larry L. Hillblom Chair in Geriatric Medicine.

Second author Young-Hyun You is an associate project scientist in the Division of Nephrology-Hypertension,

Other DOM faculty coauthors are Sameh S. Ali, assistant professor of medicine in the Division of Geriatrics, and Robert K. Naviaux, MD, PhD, professor of medicine in the Division of Medical Genetics.

Citation for the study report:

Laura L. Dugan, Young-Hyun You, Sameh S. Ali, Maggie Diamond-Stanic, Satoshi Miyamoto, Anne-Emilie DeCleves, Aleksander Andreyev, Tammy Quach, San Ly, Grigory Shekhtman, William Nguyen, Andre Chepetan, Thuy P. Le, Lin Wang, Ming Xu, Kacie P. Paik, Agnes Fogo, Benoit Viollet, Anne Murphy, Frank Brosius, Robert K. Naviaux and Kumar Sharma. AMPK dysregulation promotes diabetes-related reduction of superoxide and mitochondrial function. J Clin Invest. 2013;123(11):4888–4899. doi:10.1172/JCI66218.  |  Full text (UCSD only)

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