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  • Title: Sperm chromosome analysis in two cases of paracentric inversion.
    Author: Vialard F, Delanete A, Clement P, Simon-Bouy B, Aubriot FX, Selva J.
    Journal: Fertil Steril; 2007 Feb; 87(2):418.e1-5. PubMed ID: 17126336.
    Abstract:
    OBJECTIVE: To examine sperm meiotic segregation in men with paracentric inversions. DESIGN: Cases reports, literature review. SETTING: Departments of reproductive biology, cytogenetics, gynaecology, and obstetrics. PATIENT(S): Two patients referred for infertility, heterozygous for a paracentric inversion. INTERVENTION(S): Fluorescence in situ hybridization (FISH) with specific probes and X/Y/18 centromeric probes on 1,000 spermatozoa for the 2 patients and 10 controls. MAIN OUTCOME MEASURE(S): Sperm aneuploidy frequency. RESULT(S): The FISH analysis using the specific probes for the paracentric inversion indicated low disequilibrium (0.4% and 0.5%). The FISH analysis using X/Y/18 centromeric probes indicated aneuploidy frequencies (0.3% and 1.1%), identical to those of control patients with the same sperm parameters. CONCLUSION(S): Paracentric inversion seems to be associated with a very low risk of aneuploidy. A larger study is necessary to explore all chromosome inversions.
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