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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Taurine and pioglitazone attenuate diabetes-induced testicular damage by abrogation of oxidative stress and up-regulation of the pituitary-gonadal axis
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Taurine and pioglitazone attenuate diabetes-induced testicular damage by abrogation of oxidative stress and up-regulation of the pituitary-gonadal axis

机译:牛磺酸和吡格列酮可通过消除氧化应激和垂体-性腺轴上调来减轻糖尿病引起的睾丸损伤

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Chronic hyperglycemia is associated with impairment of testicular function. The current study aimed to investigate the protective effects and the possible mechanisms of taurine and pioglitazone against diabetes-induced testicular dysfunction in rats. Diabetes was induced by streptozotocin injection. Both normal and diabetic rats received taurine (100 mg/kg) or pioglitazone (10 mg/kg) orally and daily for 6 weeks. Diabetic rats showed a significant (P < 0.001) increase in glycosylated hemoglobin, glucose, homeostasis model of insulin resistance, and pro-inflammatory cytokines. Serum insulin, testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) were significantly (P < 0.001) decreased in diabetic rats. Taurine and pioglitazone alleviated hyperglycemia, decreased pro-inflammatory cytokines, and increased circulating levels of insulin, testosterone, LH, and FSH. Gene and protein expression of LH and FSH receptors and cytochrome P450 17 alpha-hydroxylase (CYP17) was significantly (P < 0.001) down-regulated in testes of diabetic rats, an effect which was significantly increased after administration of taurine and pioglitazone. In addition, taurine and pioglitazone significantly decreased lipid peroxidation and DNA damage, and enhanced activity of the antioxidant enzymes in testes of diabetic rats. In conclusion, taurine and pioglitazone exerted protective effects against diabetes-induced testicular damage through attenuation of hyperglycemia, inflammation, oxidative stress and DNA damage, and up-regulation of the pituitary/gonadal axis.
机译:慢性高血糖症与睾丸功能受损有关。当前的研究旨在探讨牛磺酸和吡格列酮对糖尿病引起的大鼠睾丸功能障碍的保护作用及其可能的机制。糖尿病是通过链脲佐菌素注射诱导的。正常和糖尿病大鼠均口服牛磺酸(100 mg / kg)或吡格列酮(10 mg / kg),每天服用6周。糖尿病大鼠显示糖基化血红蛋白,葡萄糖,胰岛素抵抗稳态模型和促炎性细胞因子显着(P <0.001)增加。糖尿病大鼠的血清胰岛素,睾丸激素,促黄体生成激素(LH)和促卵泡激素(FSH)显着降低(P <0.001)。牛磺酸和吡格列酮可缓解高血糖症,减少促炎性细胞因子,并增加胰岛素,睾丸激素,LH和FSH的循环水平。在糖尿病大鼠的睾丸中,LH和FSH受体的基因和蛋白质表达以及细胞色素P450 17α-羟化酶(CYP17)显着下调(P <0.001),牛磺酸和吡格列酮给药后这种作用显着增加。此外,牛磺酸和吡格列酮显着降低了糖尿病大鼠睾丸的脂质过氧化和DNA损伤,并增强了抗氧化酶的活性。总之,牛磺酸和吡格列酮通过降低高血糖症,炎症,氧化应激和DNA损伤以及垂体/性腺轴的上调,对糖尿病引起的睾丸损伤具有保护作用。

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