Objective To carry out a preliminary observation on contraceptive effect of pyrimethamine on male rats.Methods After fifty days of administration of pyrimethamine to male SD rats,functional parameters were observated including the weights and configurations of testis and epididymis,rates of sperm survival and deformation,content of serium testosterone and the pregnancy rate.Results Organ coefficient of testis and the pregnancy rate decreased prominently in the group receiving pyrimathamine of 150?mg·(kg·d) -1.The convoluted tubules of testis degenerated in various degrees. Stereocilia of epididymis epithelial cells exfoliated largely.Sperm survival and deformation declined in caudal epididymis without any changes of serum testerone content.Conclusion Pyrimethamine can influence testis spermatogenesis and function of epididymis epithelia.
参考文献:
[1] COSENTINO M J, PAKYZ R E, FRIED J. Pyrimethamine:an approach to the development of a male contraceptive, 1990 [2] MALIK N S, MATLIN S A, FRIED J. The contraceptive effects of etoprine on male mice and rats, 1995(2) [3] KALLA N R, SAGGAR S K, PURI. Regulation of male fertility by pyrimethamine in adult mice, 1997 [4] Awoniyi C A, CHANDRASHEKAR V, HURST B S. The effects of chronic administration of pyrimethamine on spermatogenesis and fertility in male rats, 1993(3) [5] 庞训胜, 汪孟全, 陈凤山. 高剂量GnRH类似物对小白鼠精子成熟的影响. 安徽技术师范学院学报2003(17). doi:10.3969/j.issn.1673-8772.2003.01.004 [6] 胡向农, 张忠林, 杨建军. 大鼠附睾上皮细胞的体外培养与研究. 南京铁道医学院学报1999(1) [7] 林光, 车敏, 郑云忠. 雷藤氯内酯醇对雄性猕猴的抗生育药效及可复性观察, 2000(1)