Abstract:
:In this study, we examined whether smoking and drinking affect sperm quality and the DNA methylation of the repetitive element LINE-1, MEST, P16, H19, and GNAS in sperm. Semen samples were obtained from 143 male residents in a minority-inhabited district of Guizhou province in southwest China. Quantitative DNA methylation analysis of the samples was performed using MassARRAY EpiTYPER assays. Sperm motility was significantly lower in both the nicotine-exposed (P = 0.0064) and the nicotine- and alcohol-exposed (P = 0.0008) groups. Follicle-stimulating hormone (FSH) levels were higher in the nicotine-exposed group (P = 0.0026). The repetitive element LINE-1 was hypermethylated in the three exposed groups, while P16 was hypomethylated in the alcohol and both the alcohol and nicotine exposure groups. Our results also show that alcohol and nicotine exposure altered sperm cell quality, which may be related to the methylation levels of MEST and GNAS. In addition, MEST, GNAS, and the repetitive element LINE1 methylation was significantly associated with the concentration of sperm as well as FSH and luteinizing hormone levels.
journal_name
Front Genetjournal_title
Frontiers in geneticsauthors
Zhang W,Li M,Sun F,Xu X,Zhang Z,Liu J,Sun X,Zhang A,Shen Y,Xu J,Miao M,Wu B,Yuan Y,Huang X,Shi H,Du Jdoi
10.3389/fgene.2019.01001subject
Has Abstractpub_date
2019-10-18 00:00:00pages
1001issn
1664-8021journal_volume
10pub_type
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