The objective of this research was to evaluate the effect sperm on chromatin stability and its relationship with membrane integrity structural – physiological rate fertilization female sheep. Ejaculates (2 × 109 sperm·mL-1) 70% motility were collected using an artificial vagina (n=5, 2 years old. For this, each ram served fifteen sheep (n=75), generating thus five different Groups (A, B, C, D, ...

Background: Epigenetic modifications are involved in different cellular processes through regulating chromatin dynamics. histone methylation is an important modification that can be dynamically regulated by histone methyltransferase and histone demethylase enzymes. JMJD1A (also known as JHDM2A and KDM3A) is a histone demethylase specific for H3K9me2/me1. JMJD1A is a key epigenetic regulator tha...

Spermiogenesis is a complex process leading to the formation of motile spermatozoa characterized by a highly stable chromatin compaction that transfers the paternal genome into the oocyte. It is commonly held that these haploid cells are devoid of transcriptional and translational activities and that the transcripts represent remnants of stored mRNAs. Recently, the chromatin organization of mat...

Traditional semen analysis is routinely used for the assessment of male infertility. The present study aimed to evaluate the application of molecular techniques in determining the DNA integrity of the spermatozoa of infertile men in comparison to conventional analysis. Semen samples from 52 infertile patients were analyzed by conventional assays, flow cytometry (FCM) analysis for sperm DNA inte...

tau.amegroups.com © Translational Andrology and Urology. All rights reserved. In a comprehensive clinical overview, Agarwal et al. (1) nicely put in perspective (I) various laboratory techniques used for testing sperm DNA fragmentation (SDF), a commonly encountered aberration in the sub-fertile/ infertile male, (II) underscore the importance of careful assessment of this parameter in the contex...

gibberellic acid (ga3) is a group of plant hormones identified in various plants. the aim of this study was to determine the effects of ga3 on sperm parameters and in vitro fertilization (ivf). fifty six adult male rats were divided into seven groups as, control, treatment and sham. following 15, 30 and 45 days of ga3 and methanol alcohol (ma) administration, rats were euthanized and epididymis...

introduction: the novel development of the (hba) sperm- hyaluronan binding assay has now been routinely used in some laboratories worldwide to predict sperm maturity and functionality. the purpose of this study was to evaluate the correlation between hba score and histone deficiency, protamine content and dna fragmentation. methods: during april- march 2012 patients who were enrolled at shiraz-...

background: it has been claimed that by using different washing methods, the sperms can be separated according to size, motility, density, chromosomal content and surface markings and charge. these methods also reduce sperm chromatin deficiencies and screen the sperms before applying in assisted reproduction techniques. objective: this study compared simple density gradient methods and a combin...

background: the particles in the range of 1-100 nm are called nanoparticles56t. gold nanoparticle is one of the most important metal nanoparticles with wide usage56t.objective: 56tthis study investigated the effects of gold nanoparticles on sperm parameters and chromatin structure in mice56t.materials and methods: 56tin this experimental study, 72 male bulb-c mice were divided into 9 groups inc...