Talk:Fertilization: Difference between revisions
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== | ==2010== | ||
===Sperm head binding to epithelium of the oviduct isthmus is not an essential preliminary to mammalian fertilization - review=== | |||
Zygote. 2010 Jul 21:1-5. | |||
Hunter RH. | |||
Institute for Reproductive Medicine, Hannover Veterinary University, Bünteweg 15, D-30559 Hannover, Germany. | |||
Abstract | |||
SummaryIn endeavouring to understand the nature of sperm-oviduct interactions in mammals, attention was focused on experimental models in which fertilization can occur without a preliminary phase of sperm head binding to the isthmus epithelium. The ovarian endocrine milieu imposed on the oviduct tissues plays an important role in the binding phenomenon, although less so after the time of ovulation. Nonetheless, a sperm suspension introduced into the peritoneal cavity or surgical insemination directly into the oviduct ampulla before ovulation can result in fertilization, as can a surgical model in which the isthmus has been resected and the remaining portions of the duct reanastomosed. Mating or artificial insemination after ovulation in pigs permits rapid sperm transport to the site of fertilization, and the frequency of polyspermic penetration increases with the post-ovulatory age of eggs.Strategies underlying sperm binding were considered, especially in terms of preovulatory sperm storage and suppression of full membranous maturation. These, in turn, raised the problem of how sperm binding in vitro to oviduct cells from prepuberal animals or to cells harvested during the luteal phase of the estrous cycle, or to cells from the ampulla or even the tracheal epithelium, can act to regulate sperm storage and maturation with precision. In an evolutionary perspective, preovulatory binding of diverse populations of cells to the endosalpinx may have developed as a form of fine tuning to assist in sperm selection, to synchronize completion of capacitation with the events of ovulation, and to promote monospermic fertilization by a controlled release of competent gametes. | |||
PMID: 20663263 | |||
http://www.ncbi.nlm.nih.gov/pubmed/20663263 | |||
==2009== | |||
===Etiology of sperm immunity in women=== | ===Etiology of sperm immunity in women=== | ||
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http://www.ncbi.nlm.nih.gov/pubmed/18281044 | http://www.ncbi.nlm.nih.gov/pubmed/18281044 | ||
===Egg coat proteins activate calcium entry into mouse sperm via CATSPER channels=== | |||
Xia J, Ren D. | |||
Biol Reprod. 2009 Jun;80(6):1092-8. Epub 2009 Feb 11. | |||
PMID: 19211808 | |||
==2008== | |||
===IJDB=== | |||
Vol. 52 Nos. 5/6 (2008) Fertilization | |||
http://www.ijdb.ehu.es/web/contents.php?vol=52&issue=5-6 | |||
===Sperm binding to the zona pellucida is not sufficient to induce acrosome exocytosis.=== | ===Sperm binding to the zona pellucida is not sufficient to induce acrosome exocytosis.=== | ||
| Line 32: | Line 48: | ||
Development. 2007 Mar;134(5):933-43. | Development. 2007 Mar;134(5):933-43. | ||
PMID: 17293534 | PMID: 17293534 | ||
===ZP2 and ZP3 traffic independently within oocytes prior to assembly into the extracellular zona pellucida=== | ===ZP2 and ZP3 traffic independently within oocytes prior to assembly into the extracellular zona pellucida=== | ||
| Line 42: | Line 53: | ||
Mol Cell Biol. 2006 Nov;26(21):7991-8. | Mol Cell Biol. 2006 Nov;26(21):7991-8. | ||
PMID: 17047254 | PMID: 17047254 | ||
Revision as of 16:46, 14 October 2010
2010
Sperm head binding to epithelium of the oviduct isthmus is not an essential preliminary to mammalian fertilization - review
Zygote. 2010 Jul 21:1-5.
Hunter RH.
Institute for Reproductive Medicine, Hannover Veterinary University, Bünteweg 15, D-30559 Hannover, Germany. Abstract SummaryIn endeavouring to understand the nature of sperm-oviduct interactions in mammals, attention was focused on experimental models in which fertilization can occur without a preliminary phase of sperm head binding to the isthmus epithelium. The ovarian endocrine milieu imposed on the oviduct tissues plays an important role in the binding phenomenon, although less so after the time of ovulation. Nonetheless, a sperm suspension introduced into the peritoneal cavity or surgical insemination directly into the oviduct ampulla before ovulation can result in fertilization, as can a surgical model in which the isthmus has been resected and the remaining portions of the duct reanastomosed. Mating or artificial insemination after ovulation in pigs permits rapid sperm transport to the site of fertilization, and the frequency of polyspermic penetration increases with the post-ovulatory age of eggs.Strategies underlying sperm binding were considered, especially in terms of preovulatory sperm storage and suppression of full membranous maturation. These, in turn, raised the problem of how sperm binding in vitro to oviduct cells from prepuberal animals or to cells harvested during the luteal phase of the estrous cycle, or to cells from the ampulla or even the tracheal epithelium, can act to regulate sperm storage and maturation with precision. In an evolutionary perspective, preovulatory binding of diverse populations of cells to the endosalpinx may have developed as a form of fine tuning to assist in sperm selection, to synchronize completion of capacitation with the events of ovulation, and to promote monospermic fertilization by a controlled release of competent gametes.
PMID: 20663263 http://www.ncbi.nlm.nih.gov/pubmed/20663263
2009
Etiology of sperm immunity in women
Fertil Steril. 2009 Feb;91(2):639-43. Epub 2008 Feb 20.
Clarke GN.
Andrology Unit, Royal Women's Hospital, Melbourne, Victoria, Australia. gary.clarke@rch.org.au
Abstract Sperm immunity in females can reduce the likelihood of natural conception, and sperm antibodies from female sera have been shown to inhibit IVF in humans and in several animal models. The etiology of sperm immunity in human females is unknown, but several possible mechanisms have been proposed, including cross-reactivity with microbial antigens and interferon gamma-mediated potentiation of the antisperm immune response in women whose male partners have sperm autoantibodies in their semen. This article reviews these ideas and postulates a novel hypothesis based on the potential for the generation of anti-idiotype antibodies in women whose partners have sperm antibodies in their semen.
PMID: 18281044
http://www.ncbi.nlm.nih.gov/pubmed/18281044
Egg coat proteins activate calcium entry into mouse sperm via CATSPER channels
Xia J, Ren D. Biol Reprod. 2009 Jun;80(6):1092-8. Epub 2009 Feb 11. PMID: 19211808
2008
IJDB
Vol. 52 Nos. 5/6 (2008) Fertilization
http://www.ijdb.ehu.es/web/contents.php?vol=52&issue=5-6
Sperm binding to the zona pellucida is not sufficient to induce acrosome exocytosis.
Baibakov B, Gauthier L, Talbot P, Rankin TL, Dean J. Development. 2007 Mar;134(5):933-43. PMID: 17293534
ZP2 and ZP3 traffic independently within oocytes prior to assembly into the extracellular zona pellucida
Hoodbhoy T, Avilés M, Baibakov B, Epifano O, Jiménez-Movilla M, Gauthier L, Dean J. Mol Cell Biol. 2006 Nov;26(21):7991-8. PMID: 17047254
inactive X chromosome
Cell cycle-dependent localization of macroH2A in chromatin of the inactive X chromosome. Chadwick BP, Willard HF. J Cell Biol. 2002 Jun 24;157(7):1113-23. Epub 2002 Jun 24. PMID: 12082075 \ JCB
Histone modifications and nuclear architecture: a review.
Bártová E, Krejcí J, Harnicarová A, Galiová G, Kozubek S.
J Histochem Cytochem. 2008 Aug;56(8):711-21. Epub 2008 May 12. Review.PMID: 18474937
