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- W2138825018 abstract "Peroxisome proliferator-activated receptor-gamma (PPARgamma) regulates adipocyte genes involved in adipogenesis and lipid metabolism and is the molecular target for thiazolidinedione (TZD) antidiabetic agents. Adipose triglyceride lipase (ATGL) is a recently described triglyceride-specific lipase that is induced during adipogenesis and remains highly expressed in mature adipocytes. This study evaluates the ability of PPARgamma to directly regulate ATGL expression in adipocytes in vitro and in vivo. In fully differentiated 3T3-L1 adipocytes, ATGL mRNA and protein are increased by TZD and non-TZD PPARgamma agonists in a dose- and time-dependent manner. Rosiglitazone-mediated induction of ATGL mRNA is rapid and is not inhibited by the protein synthesis inhibitor cycloheximide, indicating that intervening protein synthesis is not required for this effect. Rosiglitazone-mediated induction of ATGL mRNA and protein is inhibited by the PPARgamma-specific antagonist GW-9662 and is also significantly reduced following siRNA-mediated knockdown of PPARgamma, supporting the direct transcriptional regulation of ATGL by PPARgamma. In vivo, ATGL mRNA and protein are increased by rosiglitazone treatment in white and brown adipose tissue of mice with and without obesity due to high-fat diet or leptin deficiency. Thus, PPARgamma positively regulates ATGL mRNA and protein expression in mature adipocytes in vitro and in adipose tissue in vivo, suggesting a role for ATGL in mediating PPARgamma's effects on lipid metabolism." @default.
- W2138825018 created "2016-06-24" @default.
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- W2138825018 date "2007-12-01" @default.
- W2138825018 modified "2023-10-14" @default.
- W2138825018 title "PPARγ regulates adipose triglyceride lipase in adipocytes in vitro and in vivo" @default.
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- W2138825018 doi "https://doi.org/10.1152/ajpendo.00122.2007" @default.
- W2138825018 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2819189" @default.
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