PMID- 18182397 OWN - NLM STAT- MEDLINE DCOM- 20080317 LR - 20080229 IS - 1460-2350 (Electronic) IS - 0268-1161 (Linking) VI - 23 IP - 3 DP - 2008 Mar TI - Sperm fluorescence in situ hybridization study of meiotic segregation and an interchromosomal effect in carriers of t(11;18). PG - 581-8 LID - 10.1093/humrep/dem345 [doi] AB - BACKGROUND: Alanced translocations are associated with infertility, spontaneous abortions and birth defects. METHODS: We report the analysis, by multicolour fluorescence in situ hybridization (FISH), of meiotic segregation and aneuploidy of chromosomes X, Y, 7, 8 and 21 in sperm from three men who are carriers of two different translocations involving chromosomes 11 and 18. A control group comprised ten young, healthy normospermic men. RESULTS: The higher prevalence of alternate segregation followed by adjacent 1, adjacent 2 and 3:1, and other segregants was observed in all three patients. Two carriers of the same translocation differed only in the frequency of adjacent 2 segregation (P < 0.01). The carrier of the other translocation showed significantly higher frequency of alternate (P < 0.01) and less adjacent 1 and 3:1 segregation products (P < 0.01). An increased frequency of XY (P < 0.01), YY (P < 0.05) and diploid (P < 0.01) sperm was also detected in the group of translocation carriers compared with the control group. This difference was caused by elevated frequencies of disomy and diploidy in two of our carriers. CONCLUSIONS: The incidence of chromosomally unbalanced or aneuploid gametes varies in the individual translocation carriers even if the same chromosomes are included in the translocation. FISH analysis provides information useful for genetic counseling and assisted reproduction. FAU - Vozdova, Miluse AU - Vozdova M AD - Department of Genetics and Reproduction, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic. FAU - Oracova, Eva AU - Oracova E FAU - Horinova, Vera AU - Horinova V FAU - Rubes, Jiri AU - Rubes J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080107 PL - England TA - Hum Reprod JT - Human reproduction (Oxford, England) JID - 8701199 SB - IM MH - Adult MH - Aneuploidy MH - *Chromosome Segregation MH - Chromosomes, Human, Pair 11/*genetics MH - Chromosomes, Human, Pair 18/*genetics MH - Chromosomes, Human, Pair 21/genetics MH - Chromosomes, Human, Pair 7/genetics MH - Chromosomes, Human, Pair 8/genetics MH - Chromosomes, Human, X/genetics MH - Chromosomes, Human, Y/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Meiosis/*physiology MH - Spermatozoa/*cytology MH - Translocation, Genetic/*genetics EDAT- 2008/01/10 09:00 MHDA- 2008/03/18 09:00 CRDT- 2008/01/10 09:00 PHST- 2008/01/10 09:00 [pubmed] PHST- 2008/03/18 09:00 [medline] PHST- 2008/01/10 09:00 [entrez] AID - dem345 [pii] AID - 10.1093/humrep/dem345 [doi] PST - ppublish SO - Hum Reprod. 2008 Mar;23(3):581-8. doi: 10.1093/humrep/dem345. Epub 2008 Jan 7.