Lipid Mediators of Insulin Resistance

Authors: Holland, William L.; Knotts, Trina A.; Chavez, Jose A.; Wang, Li-Ping; Hoehn, Kyle L.; Summers, Scott A.

Source: Nutrition Reviews, Volume 65, Supplement 1, June 2007 , pp. 39-46(8)

Publisher: International Life Sciences Institute

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Abstract:

Lipid abnormalities such as obesity, increased circulating free fatty acid levels, and excess intramyocellular lipid accumulation are frequently associated with insulin resistance. These observations have prompted investigators to speculate that the accumulation of lipids in tissues not suited for fat storage (e.g., skeletal muscle and liver) is an underlying component of insulin resistance and the metabolic syndrome. We review the metabolic fates of lipids in insulin-responsive tissues and discuss the roles of specific lipid metabolites (e.g., ceramides, GM3 ganglioside, and diacylglycerol) as antagonists of insulin signaling and action.

Keywords: INSULIN RESISTANCE; LIPID; MEDIATORS; OBESITY

Document Type: Research article

DOI: http://dx.doi.org/10.1301/nr.2007.jun.S39-S46

Publication date: 2007-06-01

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