نتایج جستجو برای: severe oligozoospermia
تعداد نتایج: 327662 فیلتر نتایج به سال:
background: during spermatogenesis, the h2b family, member w (h2b.w) gene, encodes a testis specific histone that is co-localized with telomeric sequences and has the potential role to mediate the sperm-specific chromatin remodeling. previously h2b.w genetic variants were reported to be involved in susceptibility to spermatogenesis impairment. in the present study, two single nucleotide polymor...
Background The human Y chromosome is essential for human sex determination and male germ cell development and maintenance. In 1996, Vogt et al. identified three recurrently deleted regions in Yq11 termed the azoospermia factor (AZF). The AZF region is subdivided into three non-overlapping sub-regions called AZFa, AZFb and AZFc and microdeletion in these regions is the most important etiology of...
Disturbingly, the number of patients with oligozoospermia (low sperm count) has been gradually increasing in industrialized countries. Epigenetic alterations are believed to be involved in this condition. Recent studies have clarified that intrinsic and extrinsic factors can induce epigenetic transgenerational phenotypes through apparent reprogramming of the male germ line. Here we examined DNA...
Although varicocelectomy is generally believed to improve semen quality and the hamster egg penetration assay, these parameters do not correlate well with in vitro fertilization (IVF) success. The effect of varicocelectomy on IVF of human oocytes was examined on thirteen couples with normal female fertility, but severe oligozoospermia and the presence varicocele in the males with failure of fer...
Male factor infertility affects approximately 1 in 20 men and is the responsible factor in almost half of the couples undergoing assisted reproductive treatments (ARTs). The most common presentation is oligozoospermia, as defined by a sperm concentration less than 15 million/ml [1]. Though idiopathic spermatogenetic disorders are the underlying cause of oligozoospermia in majority, it may occur...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید