Abstract
Purpose of Review
Elevations in circulating branched chain amino acids (BCAAs) have gained attention as potential contributors to the development of insulin resistance and diabetes.
Recent Findings
Epidemiological evidence strongly supports this conclusion. Suppression of BCAA catabolism in adipose and hepatic tissues appears to be the primary drivers of plasma BCAA elevations. BCAA catabolism may be shunted to skeletal muscle, where it indirectly leads to FA accumulation and insulin resistance, via a number of proposed mechanisms.
Summary
BCAAs have an important role in the development of IR, but our understanding of how plasma BCAA elevations occur, and how these elevations lead to insulin resistance, is still limited.
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Funding
The authors are supported by grants from the NIH: T32 GM-07229 (MN), and R01 DK107667, DK114103 (ZA).
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Zolt Arany and Michael Neinast declare that they have no conflict of interest.
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This article is part of the Topical Collection on Pathogenesis of Type 2 Diabetes and Insulin Resistance
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Arany, Z., Neinast, M. Branched Chain Amino Acids in Metabolic Disease. Curr Diab Rep 18, 76 (2018). https://doi.org/10.1007/s11892-018-1048-7
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DOI: https://doi.org/10.1007/s11892-018-1048-7