New Bioinformatic Analysis Reveals Role of Proteins in Diabetic Kidney Disease

MDM2 emerges as key; Software could expose metabolomic information of other diseases —

A new bioinformatic framework developed by researchers at University of California San Diego School of Medicine has identified key proteins significantly altered at the gene-expression level in biopsied tissue from patients with diabetic kidney disease, a result that may reveal new therapeutic targets. … Read the Full Story from the UC San Diego Newsroom


Kumar Sharma, MD, FAHADr. Kumar Sharma is lead investigator of the team that published the study report in JCI Insights.Kumar Sharma, MD, is Professor of Medicine in the Division of Nephrology and Hypertension.

He directs the Institute for Metabolomic Medicine and the Center for Renal Translational Medicine at UC San Diego School of Medicine.

Study Report (full text UC San Diego only)

Spotting the Earliest Signs of Type 1 Diabetic Kidney Disease

JDRF network grant to fund study to find new types of diagnostic markers —

In an effort to pinpoint the earliest signs of diabetic kidney disease, researchers at University of California, San Diego School of Medicine are leading a multi-institutional international effort dedicated to finding a new breed of disease indicators.

The study, funded by a $2.5 million JDRF (formerly known as the Juvenile Diabetes Research Foundation) grant, will tap the potential of three emerging “omics” sciences to discover new ways to determine which patients are most likely to develop diabetic kidney disease. Samples from more than 2,000 type 1 diabetes patients, collected over a period of years by several medical centers around the world, will be used in the analyses. …Read the full story from the UC San Diego Newsroom


Kumar Sharma, MD, FAHAPrincipal investigator of the study is Kumar Sharma, MD, FAHA, Professor of Medicine in the Division of Nephrology. He directs the Center for Renal Translational Medicine and the Institute of Metabolomic Medicine in UC San Diego School of Medicine.

Researchers Find Key Player in Diabetic Kidney Disease Through Power of Metabolomics

Tapping the potential of metabolomics, an emerging field focused on the chemical processes of metabolism, researchers at University of California, San Diego School of Medicine have identified a new and pivotal player in diabetic kidney disease.

The study, published online July 22 in the Journal of the American Society of Nephrology, also clarifies a central mechanism of action in diabetic kidney disease that is generating considerable excitement among researchers and the biopharmaceutical community. The mechanism, involving the NADPH (nicotinamide adenine dinucleotide phosphate) oxidase (NOX) proteins, NOX1 and NOX4, is now the subject of a phase II clinical trial for the treatment of diabetic kidney disease. … Read the Full Story from the UC San Diego News Center


Kumar Sharma, MD, FAHASenior author of the study report is Kumar Sharma, MD, FAHA, professor of medicine in the Division of Nephrology and director of the Center for Renal Translational Medicine at UC San Diego School of Medicine.

Read the study report in the Journal of the American Society of Nephrology  (UC San Diego Only)

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)

Related UC San Diego news stories:

Urine Biomarkers Reveal Mitochondrial Dysfunction in Diabetic Kidney Disease

Researchers at the University of California, San Diego School of Medicine have identified 13 metabolites – small molecules produced by cellular metabolism – that are significantly different in patients with diabetes and chronic kidney disease compared to healthy controls. … Read the full story from the UC San Diego News Center


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

Citation for the study report:

Metabolomics Reveals Signature of Mitochondrial Dysfunction in Diabetic Kidney Disease. Kumar Sharma, Bethany Karl, Anna V. Mathew, Jon A. Gangoiti, Christina L. Wassel, Rintaro Saito, Minya Pu, Shoba Sharma, Young-Hyun You, Lin Wang, Maggie Diamond-Stanic, Maja T. Lindenmeyer, Carol Forsblom, Wei Wu, Joachim H. Ix, Trey Ideker, Jeffrey B. Kopp, Sanjay K. Nigam, Clemens D. Cohen, Per-Henrik Groop, Bruce A. Barshop, Loki Natarajan, William L. Nyhan, and Robert K. Naviaux JASN ASN.2013020126; published ahead of print October 10, 2013, doi:10.1681/ASN.2013020126  |  Full text (UCSD only)

Related UC San Diego news stories: