Format

Send to

Choose Destination
J Clin Invest. 2002 Apr;109(8):1049-55.

Increased insulin and leptin sensitivity in mice lacking acyl CoA:diacylglycerol acyltransferase 1.

Author information

1
Gladstone Institute of Cardiovascular Disease, PO Box 419100, San Francisco, California 94141-9100, USA.

Abstract

Acyl coenzyme A:diacylglycerol acyltransferase 1 (DGAT1) is one of two known DGAT enzymes that catalyze the final step in mammalian triglyceride synthesis. DGAT1-deficient mice are resistant to diet-induced obesity through a mechanism involving increased energy expenditure. Here we show that these mice have decreased levels of tissue triglycerides, as well as increased sensitivity to insulin and to leptin. Importantly, DGAT1 deficiency protects against insulin resistance and obesity in agouti yellow mice, a model of severe leptin resistance. In contrast, DGAT1 deficiency did not affect energy and glucose metabolism in leptin-deficient (ob/ob) mice, possibly due in part to a compensatory upregulation of DGAT2 expression in the absence of leptin. Our results suggest that inhibition of DGAT1 may be useful in treating insulin resistance and leptin resistance in human obesity.

PMID:
11956242
PMCID:
PMC150948
DOI:
10.1172/JCI14672
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for American Society for Clinical Investigation Icon for PubMed Central
Loading ...
Support Center