Abstract
The effects of elevated adiponectin (ADN) plasma levels on food intake, body weight, and lipid deposition of wild-type mice through ADN gene transfer using hydrodynamic based-gene delivery (HD) were investigated. The administration of pTarget/ADN significantly increased the blood ADN levels on days 1, 3, and 7 as well as food intake and body weight. Reverse transcription polymerase chain reaction (RT-PCR) was used to investigate the key-function genes involved in lipid deposition on epididymal fat, gastrocnemius, and extensor digitorum longus on days 1 and 7. The amounts of adipose triglyceride lipase, hormone-sensitive lipase, and lipoprotein lipase mRNA in the three samples significantly increased. We determined sirtuin 1 (SIRT1), forkhead box O3 (FOXO3a), and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) gene expression and protein level in these samples. The amounts of SIRT1, FOXO3a, and PGC-1α mRNA in epididymal fat, gastrocnemius, and extensor digitorum longus remarkably increased. However, a significant increase in SIRT1 and PGC-1α protein levels was only observed in extensor digitorum longus. These results suggest that high doses of ADN can increase food intake and body weight. Elevated ADN levels...Continue Reading
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