Didebulidze N A, Sumbadze Ts M, Melikadze E B, Gvidani S A, Kakabadze M Sh
Georgian Med News. 2010 Sep(186):62-7.
The purpose of research is the definition of androgens role and myocardial androgen receptors and sex steroids in males under metabolic and hormonal "stress" induced by the experimental diabetes. Research was carried out on 60 rats-males, mass 180,0-200,0 g. The diabetes reproduced by single injection of alloxan (200mg/kg). Androgen receptors were revealed by the radiometric and radioautography methods. The content of glucose, immunoreactive insulin, testosteron, estradiol, corticosteron and somatotropin were defined in animals blood plasma. On the early terms of alloxan diabetes estradiol concentration increase against a background of testosteron decrease which causes the "feminization" of the sexual hormonal balance. On the other side the increase of androgen receptors expression by cardiomyocytes causes the intensification of myocardium tissue physiologic ability to androgens perception positively influencing on the metabolism. Consequently, androgens provoke stimulating effect on the myocard metabolism in males at early stages of the experimental diabetes.
本研究的目的是确定在实验性糖尿病诱导的代谢和激素“应激”状态下,雄激素、心肌雄激素受体以及雄性大鼠体内性类固醇的作用。对60只体重为180.0 - 200.0克的雄性大鼠进行了研究。通过单次注射四氧嘧啶(200mg/kg)诱导糖尿病。采用放射测量法和放射自显影法检测雄激素受体。测定动物血浆中葡萄糖、免疫反应性胰岛素、睾酮、雌二醇、皮质酮和生长激素的含量。在四氧嘧啶糖尿病早期,雌二醇浓度在睾酮降低的背景下升高,这导致了性激素平衡的“女性化”。另一方面,心肌细胞雄激素受体表达的增加导致心肌组织对雄激素感知的生理能力增强,对代谢产生积极影响。因此,在实验性糖尿病早期,雄激素对雄性大鼠的心肌代谢具有刺激作用。