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Accurate transmission of information coded in the sperm genome is vital to the pre- and post-natal development of the offspring. Recent advances in reproductive biology have proposed evaluation of sperm DNA integrity as an important assessment tool to infer the presence of DNA strand breaks, numerical abnormalities in sperm chromosome complement, and(More)
OBJECTIVE To understand role of mitochondrial (mt) mutations in genes regulating oxidative phosphorylation (OXPHOS) in pathogenesis of male infertility. Infertility affects approximately 15% of couples trying to conceive. Infertility is frequently attributed to defects of sperm motility and number. Mitochondrion and mitochondrial DNA (mtDNA) play an(More)
Reactive oxygen species (ROS) levels in semen are believed to play both physiological and pathological roles in male fertility. The study was aimed to find the clinical significance of ROS levels in infertile Indian men. This pilot study included 33 idiopathic infertile men and 18 proven fertile controls. ROS levels in the washed sperm were measured using(More)
Infertility affects about 15 per cent married couples half of which may be attributed to men with low sperm motility (asthenozoospermia), low sperm count (oligozoospermia) or abnormal sperm morphology (teratozoospermia). As mitochondria are the energy source for initiation, differentiation and function of the germ cells, mutation in mitochondrial genome can(More)
Assisted reproductive technique (ART) has revolutionized the management of severe male factor infertility and in some countries 5% babies are conceived through ART/intra cytoplasmic sperm injection (ICSI). However, the carry-home live birth rate after several ART cycles is low (18-25%) and this is financially, physically and emotionally crippling for the(More)
Sperm DNA integrity is of vital importance for foetal development and birth of healthy offspring. Oxidative stress and consequent DNA damage are the major cause of decline in semen quality in men with varicocele. A preliminary study was conducted on 11 men with clinical varicocele who also had high levels of reactive oxygen species (ROS), to assess DNA(More)
Sperm is not a simple carrier of paternal genetic information but its role extends clearly beyond fertilization. Integrity of sperm genome is an essential pre-requisite for birth of healthy offspring and evaluation of sperm should entail DNA integrity analysis. DNA integrity analysis is a better diagnostic and prognostic marker of sperm reproductive(More)
STUDY QUESTION Does sperm DNA damage affect early embryonic development? SUMMARY ANSWER Increased sperm DNA damage adversely affects embryo quality starting at Day 2 of early embryonic development and continuing after embryo transfer, resulting in reduced implantation rates and pregnancy outcomes. WHAT IS KNOWN ALREADY Abnormalities in the sperm DNA in(More)
Diagnosis of sperm DNA integrity of semen sample is important for consistently high reproductive efficiency. The conventional parameters of semen analysis take into account morphology, motility, and concentration of spermatozoa in the sample, which are insufficient for evaluation of reproductive potential. Current studies have implicated abnormal(More)
Sperm DNA integrity is a prerequisite for normal spermatozoal function. The aim of the study was to evaluate the role of sperm chromatin damage, its cut-off level and its effect on sperm parameters in men with idiopathic infertility by analyzing 100 idiopathic infertile men and 50 fertile controls. Semen samples were analyzed as per WHO 1999 guidelines and(More)