نتایج جستجو برای: sperm chromatin
تعداد نتایج: 80534 فیلتر نتایج به سال:
background: there are few studies indicating the detrimental effects of ibuprofen on sperm fertility potential and dna integrity. objective: to determine the effects of ibuprofen on sperm parameters, chromatin condensation and dna integrity of mice. materials and methods: in this experimental study, 36 adult male mice with average weight 37 gr were divided into three groups, including control (...
introduction: to evaluate and compare efficiency of sil-select with percoll to recover sperm with normal chromatin in morphology and also studyeffect of these parameters on fertilization, embryo quality and cleavagescore. materials and methods: assessment of semen parameters, protamine deficiency (cma3) and excessive histone (aniline blue staining) were carried out before and after sperm proces...
Introduction: Different studies have shown that there is no relation between sperm chromatin stability and fertilization rate in both IVF and ICSI patients. However, the relation between SDS tests, as a detergent, along with DTT as reducer of disulphide bridges has not been studied so far in ICSI patients. Since different concentrations of DTT can induce different degrees of sperm chromatin dec...
Background: Selection of human spermatozoa prior to assisted reproduction is currently based on motility and morphology. Recently, Zeta method has been introduced for normal sperm selection based on sperm surface charges. In addition, one of the features of apoptosis is the externalization of phosphatidylserine (PS), which are normally present on the inner leaflet of the sperm plasma membrane. ...
Background: Chronic ethanol abuse causes reproductive organ failure and infertility in both humans and laboratory animals. Since sperm has a critical role in reproductive function, the objective of this unique study was to evaluate the effects of different doses of ethanol on sperm parameters, chromatin structure and apoptosis in adult mice. Materials and Methods: A total of 36 adult male mice ...
background: currently, relation between reactive oxygen species (ros) ros concentration and semen quality was indicated. saffron has traditionally been not only considered as a food additive but also as a medicinal herb, which has a good antioxidant properties. objective: the aim of this study was to evaluate the protection potency of saffron and vitamin e on sperm chromatin integrity. material...
background: the aim of present study is to evaluate the effect of polyvinyl pyrrolidone (pvp) routinly used during icsi procedure on sperm membrane integrity, and sperm chromatin status. materials and methods: this study was carried out on 21 semen samples from the infertile men referring to isfahan fertility and infertility center. the processed semen samples were divided into two portions. on...
varicocele is one of the most common causes of primary male infertility. pilea microphylla (pm) is being used as folk medicine. this study was aimed to investigate the effects of pm in a rat model of varicocele. a total of 30 male wistar rats were divided into control, sham, varicocele, accessory varicocele and pm-treated groups. after 10 weeks of varicocele induction, sperm parameters and chro...
Background: The aim of this study was to examine the possible relationship between sperm DNA integrity and chromatin packaging evaluated by cytochemical assays, traditional sperm parameters and recurrent spontaneous abortion (RSA) of unknown origin. Materials and Methods: In this cohort study, 40 couples with a history of RSA and 40 couples with proven fertility were considered as case and cont...
Background: Acrylamid (AA) is found in carbohydraterich foods that are prepared at high temperatures, such as French fries and potato chips. The toxic effects of AA in male animals include degeneration of epithelial cells of seminiferous tubules, decreased number of sperm and elevation in abnormal spermatozoa. The aim of this study was to evaluate the detrimental effects of AA on sperm paramete...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید