tau.amegroups.com © Translational Andrology and Urology. All rights reserved. Conventional semen analysis is the routine test performed during the evaluation of a couple’s fertility status. The test is cost-effective and easy to perform and at the same time provides essential information on quantitative semen parameters such as semen volume, sperm motility, concentration, viability and morpholo...

INTRODUCTION The aim of this study was to evaluate the effect of microsurgical subinguinal varicocelectomy on semen parameters in azoospermic men with clinical varicocele and to determine the predictive parameters of postoperative improvement. METHODS Twenty-three men with non-obstructive complete azoospermia and varicocele underwent subinguinal open microsurgical varicocele repair. The outco...

OBJECTIVE To evaluate sperm DNA fragmentation and semen parameters to diagnose male factor infertility and predict pregnancy after IVF. DESIGN Prospective study. SETTING Academic research laboratory. PATIENT(S) Seventy-five couples undergoing IVF and 28 fertile donors. INTERVENTION(S) Sperm DNA fragmentation was measured by the alkaline Comet assay in semen and sperm after density gradi...

Human semen contains spermatozoa as well as populations of round nonspermatozoal cells primarily consisting of leukocytes. Activation of white blood cells present in the seminal plasma during genital tract inflammation and cellular reactions against microbial agents may provoke a release of a variety of products such as cytokines and reactive oxygen species. The aim of this study was to evaluat...

The aim of this study was to evaluate the association between semen quality and the secondary sex ratio (SSR), defined as the ratio of male to female live births. Our study cohort comprised 227 male partners who were enrolled prior to conception in Michigan and Texas between 2005 and 2009, and prospectively followed through delivery of a singleton birth. The male partners provided a baseline an...

This study was conducted at the National Artificial Insemination Center, Ethiopia with an objective of evaluating breeding soundness, effect of age and breed on semen quality and fertility of bulls. The evaluation involved 45bulls (36 breeding and 11 pre-service young bulls) consisting of Holstein Friesian, Jersey, Borana and Cross breeds (Borana X Holstein Frisian). Semen was collected using a...

BACKGROUND Standardization of the semen analysis may improve reproducibility. We assessed variability between laboratories in semen analyses and evaluated whether a transformation using Z scores and regression statistics was able to reduce this variability. MATERIALS AND METHODS We performed a retrospective cohort study. We calculated between-laboratory coefficients of variation (CVB) for spe...

A study was conducted to evaluate the effects of dietary lipid sources on the reproductive performances of Hy-line Silver-Brown cockerels. Five different lipid sources namely fish oil, sunflower oil, high oleic acid sunflower oil, tallow and an equal (50:50) proportion of linseed and fish oil (representing the control diet), were used in formulating five isoenergetic and isonitrogenous diets (3...

BACKGROUND & OBJECTIVE Mental stress, which is responsible for various disorders, is one of the most important medical and social problems. It is reported that mental stress causes abnormality in sperm quality. Most of the previous investigations done to study the association between mental stress and infertility were carried out with infertile men. Infertility itself and/or its therapy may lea...

background: although intrauterine insemination (iui) is one of the most common methods which is used for male factor and unexplained infertility the relative influence of various semen parameters on the likelihood of a successful outcome is controversial. several semen parameters have been evaluated as predictors of a successful outcome with intrauterine insemination. objective: to evaluate the...