The Epididymis, Sperm Maturation and Fertilisation
The epididymis has great significance in the reproductive biology of the male and it is gaining recognition as an organ worthy of study in its own right - where the secretory and absorptive activities of one tissue (the epithelium) profoundly modify the function of another (the spermatozoon). Apart from cases of epididymal agenesis or physical blockage, however, it is not yet known to what extent mal functions of the epididymis contribute to "unexplained" male infer tility, but its importance as a target for antifertility agents in the male is now widely appreciated. This monograph evolved from two lectures on epididymal func tion given at the National Research Institute for Family Planning, Beijing and the Sichuan Provincial Family Planning Research Insti tute, Chengdu, China in 1983. In order to stress for this audience the central importance of the epididymis in fertilisation, and so highlight its potential for attack by antifertility agents, the talks attempted to put the epididymis in reproductive perspective by stressing the func tional development of the sperm cells during their sojourn in the epididymis, rather than merely listing the changes observed in them.
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Maturation of Spermatozoa in the Epididymis
Involvement of the Epididymis in the Maturation
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acrosome reaction activity androgen binding protein androgens Bedford JM binding Biochem Biophys Biol Reprod Blaquier Brooks bull calcium capacitation carnitine castration cauda epididymidis Chulavatnatol concentration Cooper TG corpus Dacheux Danzo deferens dihydrotestosterone effect efferent ducts eggs ejaculated enzyme epididymal fluid epididymal maturation epididymal proteins epididymal spermatozoa epithelial cells epithelium exp Zool Fert Steril fertilisation fertilizing ability Fournier-Delpech Gamete Gamete Res glycoprotein guinea pig Hammerstedt hamster sperm Howards SS hyperactivated immature spermatozoa in-vitro in-vivo inhibition inhibitors inositol Int J Androl Jones lipid luminal fluid male reproductive mammalian Meizel metabolism mouse Orgebin-Crist MC perfused phospholipids plasma membrane rabbit spermatozoa rat epididymis rat spermatozoa regions Reprod Fert reproductive tract rete testis rete testis fluid secretion seminal plasma Setchell BP specific sperm cells sperm maturation sperm motility sperm surface spermato steroids synthesis testicular spermatozoa testis and epididymis testosterone tissue transport tubules Turner TT uptake vas deferens vitro Voglmayr JK White IG Yanagimachi
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