Effect of Ovariectomy on Serum Adiponectin Levels and Visceral Fat in Rats

This study was aimed to examine the effect of ovariectomy on visceral fat, serum adi- ponectin levels and lipid profile. Forty-five female Sprague DawIey rats were divided into three groups （n=15 each）： ovariectomized group （OVX）, ovariectomized plus estrogen-treated group （OVX＋E2）, and sham-operated group （SHAM）. Body weight, abdominal adipose tissues, serum adiponectin and lipid profile were measured and compared among the groups after three-month feeding post-surgery. Signifi- cant increases in body weight and visceral fat were found in ovariectomized rats when compared with sham-operated ones and significant increases were also observed in serum adiponectin, triglyceride and very low density lipoprotein cholesterol levels in ovariectomized rats. Body weight, visceral fat and se- rum adiponectin levels were profoundly reduced in OVX＋E2 group as compared with OVX group. It was concluded that ovarian hormone deficiency induced by ovariectomy leads to significant increases in body weight and visceral fat, along with increased serum adiponectin, triglyceride and very low density lipoprotein cholesterol levels in rats. Attenuation in these changes can be achieved by estrogen supple- mentation.