By James W. Overstreet (auth.), Jean André (eds.)
, Jean ANDRE Universite de Paris XI, ORSAY, France. Sperm cells have lengthy been regarded as the main hugely really good of all residing cells. They absolutely are, being very varied, very complicated, containing organelles which don't exist in the other telephone -such as acrosome or crystallized mitochondria- and being endowed with a truly targeted behaviour, that's to satisfy and realize the ovum, pierce its protecting envelopes and inject into its cytoplasm a Most worthy deposit, the haploid genome of the species. it's Baccio Baccetti's benefit to have felt the necessity for a war of words of the scientists engaged on sperm with a purpose to make clear the plain complexity of the big quantity of data gathered at the topic. hence, he effectively inaugurated the sequence of the InternationaZ Symposia on SpermatoZogy. The Seillac variation is the fourth within the sequence. After an preliminary degree in which morphology used to be most important, our conferences have became progressively more in the direction of functionality. it's been the desire of the French Organizing Committee to dedicate this assembly more often than not to Eutherians, and, between these, to guy, in reference to the conflicting must haves to aid the sterile and to contrul the inhabitants explosion on the floor of the world.
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Additional info for The Sperm Cell: Fertilizing Power, Surface Properties, Motility, Nucleus and Acrosome, Evolutionary Aspects Proceedings of the Fourth International Symposium on Spermatology, Seillac, France, 27 June–1 July 1982
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27. 28. 29. Aitken RJ, Best FSr1, Richardson OW, Ojahanbakhch 0, Lees ~lr1. 1982. The correlates of fertilizing capacity in normal fertile men. Fertil Steril. In Press. Overstreet JW, Hembree WC. 1976. Penetration of the zona pe11ucida of nonliving human oocytes by human spermatozoa in vitro. Ferti1 Steri1 27:815-831. Overstreet JW, Gould JE, Katz OF, Hanson FW. 1980. In vitro capacitation of human spermatozoa after passage through a column of cervical mucus. Ferti1 Steril 34:604-606. Overstreet JW, Yanagimachi R, Katz OF, Hayashi K, Hanson FW.
Bioi. Repr. 1977, 6, 601. 4. , SCHWARTZ D. J. D. , Plenum New-York, 1979, p. 221. o. K. 1. WHAT IS SELECTION ? There is no doubt that only a tiny proportion of mammalian spermatozoa are utilized for their primary biological function, fertilization. Whether their attrition is selective or random is controversial. It is agreed, however, that any selection must imply discrimination: if all fail, or if anyone can succeed, selection cannot be occurring. Only if some fail and some pass a barrier, like cervix or phagocytes or zona, can selection have occurred.
EXp. BioI. Med. 69: 36-39. 29. Fawcett, DW. 1972. Observations on cell differentiations and organelle continuity in spermatogenesis. In: The Genetics of the Spermatozoon. ) Copenhagen. 37-68. 30. Erickson RP, Lewis SE, Butley M. 1981. Is haploid gene expression possible for sperm antigens? J. lmmunol. 3: 195-217. 31. Hancock RJT. 1978. Sperm antigens and sperm immunogenicity. In Spermatozoa, Antibodies and Infertility (ed Cohen J. and Hendry WF). Blackwell. 1-9. 32. Tucker et al. This Symposium.
