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Sperm and embryo analysis of similar t(7;10) translocations transmitted in two families

Miluse Vozdova, Eva Oracova, Petra Musilova, Katerina Kasikova, Petra Prinosilova, Renata Gaillyova, Jiri Rubes

. 2011 ; 96 (1) : e66-70. [pub] 20110511

Jazyk angličtina Země Spojené státy americké

Typ dokumentu kazuistiky, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc12027545

Grantová podpora
NS9842 MZ0 CEP - Centrální evidence projektů

OBJECTIVE: To compare the sperm meiotic segregation profiles in two men from families with similar t(7;10) translocations and determine the frequency of unbalanced sperm and preimplantation embryos in one couple. DESIGN: Analysis of sperm nuclei and blastomeres by fluorescence in situ hybridization (FISH). SETTING: Research institute. PATIENT(S): Carriers of balanced translocations t(7;10)(q34;q24) and t(7;10)(q36;q24.3). INTERVENTION(S): Multicolor FISH using probes for chromosomes 7, 10, 8, 18, 21, X, and Y on sperm and preimplantation genetic diagnosis (PGD) of blastomeres. MAIN OUTCOME MEASURE(S): Frequencies of meiotic segregation products in sperm and blastomeres and sperm aneuploidy of chromosomes 8, 18, 21, X, and Y. RESULT(S): Similar meiotic segregation patterns, with preferential alternate segregation (50.6% in patient P1, 48.1% in P2) followed by adjacent 1, adjacent 2 and 3:1 segregations, were observed in the sperm of the two carriers. An interchromosomal effect on the sex chromosomes was found when compared with disomy frequencies reported in control donors. The results of preimplantation genetic diagnosis in the first couple are roughly consistent with the sperm analysis results. CONCLUSION(S): Carriers of similar translocations show similar segregation profiles. The in vitro fertilization method accompanied by preimplantation genetic diagnosis increases the chance of translocation carriers fathering a healthy child.

Citace poskytuje Crossref.org

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