BACKGROUND: Male mice, heterozygous for two semi-identical reciprocal translocations T(1;13)70H and T(1;13)1Wa are usually sterile. We have investigated this oligoasthenoteratozoospermic mouse model using ICSI. METHODS: B6D2F1 oocytes were injected with epididymal or testicular sperm from fertile or sterile translocation carriers and from chromosomally normal fertile controls. ICSI efficiency was determined by pronucleus formation and first cleavage rates. For arrested zygotes, cell cycle progression was evaluated by BrdU incorporation and incubation with okadaic acid. RESULTS: Epididymal sperm from infertile translocation carriers showed a slightly lower fertilization rate (70% vs. 92%, 95% and 95% for fertile translocation carriers and two groups of normal fertile control males, respectively) and a severely reduced cleavage rate (33% vs. 87%, 96% and 89% for the same control groups). However, the use of testicular sperm significantly improved the cleavage rate (62% vs. 83% for normal fertile controls). Development of arrested zygotes was delayed or blocked during S- and G2-phase. CONCLUSIONS: Whereas control testicular and epididymal sperm performed equally well, the use of testicular sperm from oligospermic T/T' males significantly increased first cleavage rates when compared to the low rates with epididymal sperm. Epididymal storage in oligospermics may negatively influence zygote division.
BACKGROUND: Male mice, heterozygous for two semi-identical reciprocal translocations T(1;13)70H and T(1;13)1Wa are usually sterile. We have investigated this oligoasthenoteratozoospermic mouse model using ICSI. METHODS: B6D2F1 oocytes were injected with epididymal or testicular sperm from fertile or sterile translocation carriers and from chromosomally normal fertile controls. ICSI efficiency was determined by pronucleus formation and first cleavage rates. For arrested zygotes, cell cycle progression was evaluated by BrdU incorporation and incubation with okadaic acid. RESULTS:Epididymal sperm from infertile translocation carriers showed a slightly lower fertilization rate (70% vs. 92%, 95% and 95% for fertile translocation carriers and two groups of normal fertile control males, respectively) and a severely reduced cleavage rate (33% vs. 87%, 96% and 89% for the same control groups). However, the use of testicular sperm significantly improved the cleavage rate (62% vs. 83% for normal fertile controls). Development of arrested zygotes was delayed or blocked during S- and G2-phase. CONCLUSIONS: Whereas control testicular and epididymal sperm performed equally well, the use of testicular sperm from oligospermic T/T' males significantly increased first cleavage rates when compared to the low rates with epididymal sperm. Epididymal storage in oligospermics may negatively influence zygote division.
Authors: Joanna E Gawecka; Joel Marh; Michael Ortega; Yasuhiro Yamauchi; Monika A Ward; W Steven Ward Journal: PLoS One Date: 2013-02-19 Impact factor: 3.240
Authors: Yasuhiro Yamauchi; Jonathan M Riel; Zoia Stoytcheva; Paul S Burgoyne; Monika A Ward Journal: Genome Biol Date: 2010-06-23 Impact factor: 13.583
Authors: Christine van de Werken; Godfried W van der Heijden; Cindy Eleveld; Miriam Teeuwssen; Mareike Albert; Willy M Baarends; Joop S E Laven; Antoine H F M Peters; Esther B Baart Journal: Nat Commun Date: 2014-12-18 Impact factor: 14.919
Authors: Godfried W van der Heijden; Liliana Ramos; Esther B Baart; Ilse M van den Berg; Alwin A H A Derijck; Johan van der Vlag; Elena Martini; Peter de Boer Journal: BMC Dev Biol Date: 2008-03-31 Impact factor: 1.978