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Pyruvate oxidation is critical determinant of pancreatic islet number and β-cell mass
Date:8/5/2014

Neurog3, NeuroD and Pdx1. Interestingly, there was also a reduction in the numbers of insulin-immunopositive, extra-islet small endocrine cell clusters, a possible source of new β-cells from progenitors. The new findings reinforce the concept that pathways controlling glucose metabolism in β-cells are as important for maintenance of β-cell mass as are hormones and growth factors, such as glucagon-like polypeptide 1 (GLP1). "These findings show that glucose metabolism is a major regulator of β-cell mass which is likely to act independently of other signaling pathways, such as insulin receptor substrate 2", said Dr. Mulchand Patel, senior author of the study and SUNY Distinguished Professor, Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo, the State University of New York.

Dr. Steven R. Goodman, Editor-in-Chief of Experimental Biology and Medicine, said "the study by Patel et al utilizes a mouse knockout model to disrupt the pyruvate dehydrogenase complex (PDC) activity to study the role of PDC in pancreatic β-cell development. They demonstrate that PDC has a direct impact upon the regulation of β-cell mass as well as plasticity."


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Contact: M.S. Patel
mspatel@buffalo.edu
Society for Experimental Biology and Medicine
Source:Eurekalert

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