One type of epigenetic modification is genomic DNA methylation, which is induced by
smoking, and both are associated with male infertility. In this study, the relationship between …

Research question Does regular smoking affect semen quality and the levels of DNA
methylation in mature human spermatozoa? Design Spermatozoa from 109 men were …

Tobacco smoking is considered the most common reason of death and infertility around the
world. This study was designed to assess the impact of tobacco heavy smoking on sperm …

The purpose of this study was to investigate the impact of current cigarette smoking on
sperm DNA methylation patterns. A total of 108 males (51 current smokers and 57 never …

Previous studies have found that smoking is associated with decreased male fertility via
altering the quality of semen. However, the mechanism by which cigarette smoking affects …

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 …

Background Tobacco smoking is considered as one of the lifestyles factors that influence the
sperm DNA methylation and global sperm DNA methylation and that may affect the sperm …

The present study investigated the H19 gene methylation status in male infertility. Between
March 2013 and June 2014, semen samples were collected from 15 normal fertile males …

DNA methylation is an epigenetic modification of the genome. The purpose of this study was
to determine the influence of cigarette‐smoking on sperm DNA methylation from a …

Numerous health consequences of tobacco smoke exposure have been characterized, and
the effects of smoking on traditional measures of male fertility are well described. However, a …