Fletcher J M
Biochem J. 1986 Sep 1;238(2):459-63. doi: 10.1042/bj2380459.
Intact obese rats were hyperinsulinaemic, had higher rates of whole-body fatty acid synthesis, higher activities of hepatic acetyl-CoA carboxylase and tyrosine aminotransferase and a higher hepatic glycogen concentration than intact lean animals. Adrenalectomy abolished all these factors of the obese phenotype. Treatment of adrenalectomized rats with corticosterone for 24 h increased the rate of whole-body fatty acid synthesis to the same extent in both phenotypes, but caused a larger increase in glycogen concentration, tyrosine aminotransferase activity and plasma insulin concentration in obese rats.
完整的肥胖大鼠存在高胰岛素血症,其全身脂肪酸合成速率更高,肝脏乙酰辅酶A羧化酶和酪氨酸转氨酶活性更高,肝脏糖原浓度也高于完整的瘦动物。肾上腺切除术消除了肥胖表型的所有这些因素。用皮质酮对肾上腺切除的大鼠进行24小时治疗,两种表型的全身脂肪酸合成速率均增加到相同程度,但肥胖大鼠的糖原浓度、酪氨酸转氨酶活性和血浆胰岛素浓度升高幅度更大。