摘要
Chromosomal abnormalities and Y chromosome microdeletions are considered to be the two more common genetic causes of spermatogenic failure.However,the relati on ship between chromosomal aberrations and Y chromosome microdeletio ns is still un clear.This study was to investigate the incidenee and characteristics of chromosomal aberrations and Y chromosome microdeletions in infertile men,and to explore whether there was a correlation between the two genetic defects of spermatogenic failure.A 7-year retrospective study was conducted on 5465 infertile men with nonobstructive azoospermia or oligozoospermia.Karyotype analysis of peripheral blood lymphocytes was performed by standard G-banding techniques.Y chromosome microdeletions were screened by multiplex PCR amplification with six specific sequence-tagged site(STS)markers.Among the 5465 infertile men analyzed,371(6.8%)had Y chromosome microdeletions and the prevalence of microdeletions in azoospermia was 10.5%(259/2474)and in severe oligozoospermia was 6.3%(107/1705).A total of 4003(73.2%)infertile men underwent karyotyping;370(9.2%)had chromosomal abnormalities and 222(5.5%)had chromosomal polymorphisms.Karyotype analysis was performed on 272(73.3%)patients with Y chromosome microdeletions and 77(28.3%)had chromosomal aberrations,all of which involved sex chromosomes but not autosomes.There was a sign ifica nt d iff ere nee in the frequency of chromosomal abno rmalities betwee n men with and without Y chromosome microdeletions(P<0.05).
基金
We should like to thank our patients for agreeing to donate their personal data and allowing the data to be published.We are grateful to Dr.Jiong Gao(BGI Genomics,BGI-Shenzhen,Shenzhen,China)for improving the article.The study was funded by the National Key Research and Development Program of China(Grant No.2018YFC1004903,and 2016YFC1000703)
Key Research and Development Program of Zhejiang Province(Grant No.2019C03025)
the National Nature Science Foundation of China(Grant No.81801441)
and Zhejiang Provincial Natural Science Foundation of China(Grant No.LQ19H090019).
