Biomedical Science Letters (대한의생명과학회지)

The Korean Society for Biomedical Laboratory Sciences (대한의생명과학회)
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$17{\beta}$-estradiol Represses White Adipose Tissue Metabolism by Inhibiting $PPAR{\gamma}$ in High Fat Diet-induced Obese Female Ovariectomized Mice

  • Published : 2009.09.30
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Abstract

This study investigated whether increased adiposity is prevented by estrogen replacement in female ovariectomized (OVX) C57BL/6J mice, an animal model of human menopause and whether these metabolic changes reflect the inhibitory action of estrogen on peroxisome proliferator-activated receptor $\gamma$ ($PPAR{\gamma}$)-regulated gene expression. Treatment of $17{\beta}$-estradiol for the last one week of the experiment decreased high fat diet-induced body weight gain and white adipose tissue mass compared to OVX control mice. Histological analysis showed that administration of $17{\beta}$-estradiol to mice decreased the size of adipocytes in parametrial adipose tissue versus OVX control mice. In addition, $17{\beta}$-estradiol reduced the adipose expression of $PPAR{\gamma}$ as well as $PPAR{\gamma}$ target genes such as adipocyte fatty acid binding protein and tumor necrosis factor $\alpha$. These results suggest that $17{\beta}$-estradiol may inhibit adiposity through reducing the $PPAR{\gamma}$ activities in female OVX mice.

Keywords

References

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