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Mono-unsaturated Fatty Acids Protect Against Beta-cell Apoptosis Induced by Saturated Fatty Acids, Serum Withdrawal or Cytokine Exposure

Overview
Journal FEBS Lett
Specialty Biochemistry
Date 2004 Feb 28
PMID 14988006
Citations 46
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Abstract

Long-chain saturated fatty acids are cytotoxic to pancreatic beta-cells while shorter-chain saturated and long-chain unsaturated molecules are better tolerated. Mono-unsaturated fatty acids are not, however, inert since they inhibit the pro-apoptotic effects of saturated molecules. In the present work we show that the mono-unsaturates palmitoleate (C16:1) or oleate (C18:1) also cause marked inhibition of apoptosis induced by exposure of clonal BRIN-BD11 beta-cells to serum withdrawal or a combination of interleukin-1beta plus interferon-gamma. This response was dose-dependent and not accompanied by changes in NO formation. Taken together, the results suggest that mono-unsaturated fatty acids regulate a distal step common to several apoptotic pathways in pancreatic beta-cells.

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