雷公藤多甙、甲睾酮和壮骨伸筋胶囊对大鼠睾丸一氧化氮合酶的作用

Effects of Glycosides of Tripterygium Wilfordii, Methyltestosterone and Zhuanggushenjin Capsule on Nitric Oxide Synthase in Rat Testes

目的通过雷公藤多甙(GTW)、甲睾酮、壮骨伸筋胶囊3种药物对大鼠睾丸间质细胞一氧化氮合酶(NOS)亚型eNOS和nNOS的影响,探讨3种药物对雄性SD大鼠睾丸功能的作用与一氧化氮(NO)的相关性。方法实验分5组,每组9只,每天分别给予各组GTW[10mg/(kg·d)]、甲睾酮[2mg/(kg·d)]、壮骨伸筋胶囊[0.3g/(kg·d)]、蒸馏水加吐温80(对照组I组)和蒸馏水(对照组II),共4周。第5周末,应用免疫组化ABC法观察3种药物对大鼠睾丸间质细胞NOS阳性细胞数目的影响。结果用药后与对照II组相比,GTW组大鼠睾丸间质细胞nNOS和eNOS阳性细胞数明显减少;甲睾酮组nNOS阳性细胞数明显增多,而eNOS变化不大;壮骨伸筋胶囊组eNOS和nNOS阳性细胞数均明显增多。结论雷公藤多甙通过对eNOS和nNOS的抑制而减少NO产生,进而影响生精过程。壮骨伸筋胶囊通过对eNOS和nNOS的促进而增加NO的合成,使其在增强性功能的过程中可能起重要作用。

Objective: To investigate the effects of glycosides of tripterygium wilfordii (GTW), methyltestosterone and Zhuanggushenjin capsule on nitric oxide synthase (NOS) in rat testes. Methods: Forty-five rats were equally divided into 5 groups, and respectively given GTW[10 mg/(kg·d)], methyltestosterone[2 mg/(kg·d)], Zhuanggushenjin capsule [~0.3 g/(kg·d)], distilled water plus Tween 80 (control I), and distilled water alone (control II) for 4 weeks. At the end of the 5th week, the immunochemical ABC method was used to observe the effects of the three drugs on the NOS positive Leydig cells of the rats. Results: Compared with control II, the GTW group had a significant decrease in the numbers of nNOS and eNOS positive Leydig cells, the methyltestosterone group showed an increase in the number of nNOS but a decrease in that of eNOS positive Leydig cells, and the Zhuanggushenjin group had an increase in the numbers of both nNOS and eNOS positive Leydig cells. Conclusion: GTW can reduce NO production by inhibiting eNOS and nNOS, and hence influence the spermatogenic process. Zhuanggushenjin capsule plays an important role in improving male sexual function by enhancing nNOS and eNOS expression and NO synthesis.