[Effect of Wenshen Yangxue Recipe on Inhibin-Activin-Follistatin System in Anovulatory Rats].

Abstract

Objective To explore the effect of Wenshen Yangxue Recipe (WYR) on inhibin-ac- tivin-follistatin (INH-ACT-FS) system and gonadal hormone level in anovulatory rats. Methods Anovula- tory rat model was established in 76 rats (9 days old) by subcutaneous injecting testosterone propionate (1. 25 mg/0. 05 mL for each rat) from the nape. Totally 58 successfully modeled rats were divided into 5 groups according to random digit table, i.e., the model group (n =10), the Western medicine (WM) group (n =12), high, middle, and low dose WYR groups (n =12). Besides, another ten 22-day old rats were recruited as a normal group. Distilled water was daily administered to rats in the normal group and the model group by gastrogavage. Clomiphene citrate (0. 58 mg/100 g) was daily administered to rats in the WM group for 5 successive days. WYR at 5. 2, 2. 6, 1. 3 mg/100 g was daily administered to rats in high, middle, and low dose WYR groups for 21 successive days. Levels of follicular stimulating hormone (FSH) , luteinizing hormone (LH) , estradiol (E₂) , progesterone (P) , and prolactin (PRL) were detected using radioimmunoassay. Contents of inhibin (INH) , activin (ACT) , and follistatin (FS) were measured using ELISA. Results Compared with the normal group, serum levels of FSH and LH increased, and P level decreased in the model group (P <0. 05) ; INH level decreased and FS level increased in the model group (P<0. 05). Compared with the model group, serum FSH level decreased in the WM group and 3 WYR groups, P level decreased in the WM group (P <0. 05); INH increased and FS levels decreased in the WM group and 3 WYR groups; ACT level increased in the high dose WYR group, with statistical differ- ence (P <0. 05). Conclusion WYR promoted follicular development possibly through regulating INH- ACT-FS system and gonadal hormone level.