Abstract Approximately 10%–15% of couples are infertile, and a male factor is involved in
almost half of these cases. This observation is due in part to defects in spermatogenesis …

Oxidative stress and reactive oxygen species (ROS) are generated from both endogenous
and environmental resources, which in turn may cause defective spermatogenesis and male …

Male fertility rates have shown a progressive decrease in both developing and industrialised
countries in the past 50 years. Clinical and epidemiological studies have demonstrated …

The effects of the GST genes (GSTM1, GSTT1 and GSTP1) on male factor infertility have not
been well elucidated. A case–control study was performed to investigate the association …

Male idiopathic infertility accounts for 15–25% of reproductive failure. One of the factors that
has been linked to this condition is oxidative stress (OS), defined as the imbalance between …

Published data on the association between the GST genes polymorphisms and male
infertility risk are inconclusive. We investigated GST genes polymorphisms in a large sample …

Objective To study peripheral blood DNA differential methylation in oligozoospermic infertile
men in comparison with normozoospermic fertile controls. Design Case-control study …

Inconsistent results of association studies investigated the role of glutathione S–transferase
genes in idiopathic male infertility may be explained by ethnical differences in gene–gene …

Sexual activity is an essential part of reproductive functions and needed for the maintenance
of fertility. Drugs, particularly substances of abuse, impair male reproductive function either …

The male factor contributes to 50% of infertility. The cause of male infertility is idiopathic and
could be congenital or acquired. Among different factors which are involved in idiopathic …