Oxidative stress and reactive oxygen species (ROS) are generated from both endogenous and environmental resources, which in turn may cause defective spermatogenesis and male infertility. Antioxidant genes, which include catalase (CAT), glutathione peroxidase (GPX), glutathione S-transferase (GST), nitric oxide synthase (NOS), nuclear factor erythroid 2-related factor 2 (NRF2), and superoxide di...

BACKGROUND The proteolytic chaperone peptide ubiquitin accumulates in defective human spermatozoa. Immunodetection of ubiquitin in human sperm samples correlates with semen quality and male fertility. METHODS Semen samples from 93 men from couples seeking infertility treatment were separated on a PureSperm density gradient and screened by immunofluorescence microscopy with anti-ubiquitin anti...

Infertility is a growing medical and social problem in the world; and approximately one of five couples has problems with conception [1]. Several fertility workers did focus in their search on female etiological factors for infertility, despite the fact that assessment of male fertility potential is of great importance. Male partner may involve in the aetiology of half of cases, either as prima...

Infertility is a private, social, and economic problem. Infertility is defined as the inability to conceive a pregnancy within 1 year. Twenty-five percent of couples will seek help for infertility at some point during their relationship (Page, 1989), accounting for over 2 million office visits to health care providers annually (The Endocrine Society, 1998). Male factor infertility is contributo...

BACKGROUND Intrauterine insemination (IUI) is one of the therapeutic approaches for infertility. The objective of this study was to evaluate DNA integrity and apoptosis role in success of IUI in both mild male and female factor infertility. METHODS PATIENTS WERE DIVIDED INTO TWO GROUPS: M (mild male factor; n = 29) and F (female factor; n = 31) undergoing single IUI. Ejaculates were analyzed ...

Epigenetic modifications characterized by DNA methylation, histone modifications, and chromatin remodeling are important regulators in a number of biological processes, including spermatogenesis. Several genes in the testes are regulated through epigenetic mechanisms, indicating a direct influence of epigenetic mechanisms on the process of spermatogenesis. In the present article, we have provid...

Male infertility; Smoking; Tobacco; Semen; Sperm; Fertility Abstract Numerous studies have identified specific body systems affected by the hazardous effects of the cigarette smoking particularly the respiratory and cardiovascular systems. The effect of smoking on male reproduction has also been studied where semen quality was investigated in different cross-sectional studies including infertil...