Dataset Information

Y-chromosome microdeletions in nonobstructive azoospermia and severe oligozoospermia.

ABSTRACT: The aim of the present work was to present the outcomes of the patients with Y-chromosome microdeletions treated by intracytoplasmic sperm injection (ICSI), either using fresh (TESE) or frozen-thawed (TESE-C) testicular sperm and ejaculated sperm (EJAC). The originality of this work resides in the comparisons between the different types of Y-microdeletions (AZFa, AZFb, and AZFc) and treatments, with detailed demographic, stimulation, embryological, clinical, and newborn (NB) outcomes. Of 125 patients with Y-microdeletions, 33 patients presented severe oligozoospermia (18 performed ICSI with ejaculated sperm) and 92 secretory azoospermia (65 went for TESE with 40 having successful sperm retrieval and performed ICSI). There were 51 TESE treatment cycles and 43 TESE-C treatment cycles, with a birth of 19 NB (2 in AZFa/TESE-C, 12 in AZFc/TESE, and 5 in AZFc/TESE-C). Of the 29 EJAC cycles, there was a birth of 8 NB (in AZFc). In TESE and EJAC cycles, there were no significant differences in embryological and clinical parameters. In TESE-C cycles, there was a significant lower oocyte maturity rate, embryo cleavage rate and mean number of embryos transferred in AZFb, and a higher mean number of oocytes and lower fertilization rate in AZFc. In conclusion, although patients with AZFc microdeletions presented a high testicular sperm recovery rate and acceptable clinical outcomes, cases with AZFa and AZFb microdeletions presented a poor prognosis. Due to the reported heredity of microdeletions, patients should be informed about the infertile consequences on NB and the possibility of using preimplantation genetic diagnosis for female sex selection.

SUBMITTER: Goncalves C

PROVIDER: S-EPMC5427791 | biostudies-literature | 2017 May-Jun

REPOSITORIES: biostudies-literature

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Y-chromosome microdeletions in nonobstructive azoospermia and severe oligozoospermia.

Goncalves Carolina C Cunha Mariana M Rocha Eduardo E Fernandes Susana S Silva Joaquina J Ferraz Luís L Oliveira Cristiano C Barros Alberto A Sousa Mário M

Asian journal of andrology 20170501 3

The aim of the present work was to present the outcomes of the patients with Y-chromosome microdeletions treated by intracytoplasmic sperm injection (ICSI), either using fresh (TESE) or frozen-thawed (TESE-C) testicular sperm and ejaculated sperm (EJAC). The originality of this work resides in the comparisons between the different types of Y-microdeletions (AZFa, AZFb, and AZFc) and treatments, with detailed demographic, stimulation, embryological, clinical, and newborn (NB) outcomes. Of 125 pat ...[more]

PMID: 26908064

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Project description:BACKGROUND:During spermatogenesis, the H2B family, member W (H2B.W) gene, en- codes a testis specific histone that is co-localized with telomeric sequences and has the potential role to mediate the sperm-specific chromatin remodeling. Previously H2B.W genetic variants were reported to be involved in susceptibility to spermatogenesis im- pairment. In the present study, two single nucleotide polymorphisms (SNPs) in 5?UTR and exon 1 of H2B.W gene were examined to investigate possible association of these polymorphisms with male infertility in Iranian population. MATERIALS AND METHODS:This case control study was conducted in Royan institute during four-year period (2010-2013). Genetic alteration of two SNPs loci, -9C>T and 368A>G, in H2B.W gene were indicated in 92 infertile men who were divided into two main groups includ- ing azoospermia (n=46) and sever oligozoospermia (n=46), while there was 60 fertile men as control group. Azoosperima was also divided into three sub-groups including sertoli cell only syndrome (SCOS, n=21), complete maturation arrest (CMA, n=17) and hypo spermatogenesis (n=8) according to testicular biopsy. For analysis, polymerase chain reaction-restriction frag- ment length polymorphism (PCR-RFLP) technique was applied. RESULTS:The frequency of allele -9T was significantly higher in CMA group than in patients with SCOS (P<0.05). The haplotype TA (corresponding to simultaneous occur- rence of -9T and 368A) compared with haplotype CA (corresponding to simultaneous occurrence of -9C and 368A) in patients suffering from CMA significantly increased, compared with patients had SCOS (P<0.05). However, statistical studies indicated that in general, the distribution frequencies of -9C>T and 368A>G had no significant difference between the infertile groups and control (P=0.859 and P=0.812, respectively). CONCLUSION:This investigation showed that SNP -9C>T might be contribute to CMA in azoo- spermic patients and SNP 368A>G had no correlation with male infertility in Iranian population.

Dataset Information

Y-chromosome microdeletions in nonobstructive azoospermia and severe oligozoospermia.

Publications

Y-chromosome microdeletions in nonobstructive azoospermia and severe oligozoospermia.

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