[Effect of Wubi Shanyao pills on sexual function in mice with kidney-yang-deficiency induced by hydrocortisone].

ABSTRACT

OBJECTIVE: To investigate the effect of Chinese medicine Wubi Shanyao pills on sexual function of kidney-yang-deficiency mice induced by hydrocortisone. METHODS: Male Kunming mice were injected with hydrocortisone for 10 days to prepare the kidney-yang-deficiency model, and administrated with Wubi Shanyao pills (0.91, 1.82, 2.73 g/kg) for 9 weeks. The general behaviors of mice (autonomous activity, grasping power) were observed; sexual behaviors (capture, straddle, ejaculation frequency and incubation period) of mice were detected by mating experiment. The serum levels of cortisol, adrenocorticotropic hormone (ACTH), luteinizing hormone (LH), follicle stimulating hormone (FSH), estradiol (E2) and testosterone were measured by ELIZA. The organ indexes of kidney, epididymis, testis and seminal vesicle were calculated. The histomorphology of testis was observed by HE staining. The apoptosis of testis cells was detected by TUNEL; and the expression level of proliferating cell nuclear antigen (PCNA) in testis was detected by immunohistochemistry. RESULTS: Wubi Shanyao pills increased the number of independent activities, grasping power, capture frequency of model mice and shortened the capture latency (all P<0.01); and also increased the serum levels of testosterone, cortisol, ACTH, decreased the serum levels of FSH (P<0.05 or P<0.01); increased testis index (P<0.05), improved the pathological changes of testis, inhibited cell apoptosis, and promoted PCNA protein expression in testis. CONCLUSIONS: Wubi Shanyao pills can improve the sexual function of mice with kidney-yang-deficiency induced by hydrocortisone, which may be related to regulating the hypothalamus-pituitary-adrenal axis (HPA axis), promoting the proliferation of testicular cells, and inhibiting cell apoptosis.