This was a prospective multicenter study aiming at comparing the efficiency of sperm selection by density gradient centrifugation (DGC) in reducing sperm DNA fragmentation (SDF) in different ART centers. The study was designed using 290 semen samples collected from 10 different ART centers performing artificial insemination, in vitro fertilization and blind assessment of SDF at the University f...

The sperm quality index (SQI) is a tool used to predict overall rooster semen quality, fertility, and hatchability. However, semen must be diluted before SQI analysis, and research has shown that the SQI is most predictive of fertility at lower semen dilutions. Therefore, the present study was undertaken to determine why the SQI is not as predictive of fertility at higher semen dilutions and wh...

BACKGROUND There is considerable uncertainty as to the significance of a high sperm DNA fragmentation index (DFI) for achieving a successful pregnancy. METHODS The sperm DFI of 124 patients undergoing 192 IVF cycles and of 96 patients undergoing 155 ICSI cycles was determined using the sperm chromatin structure assay on neat sperm. RESULTS The rate of continuing pregnancies in ICSI cycles (...

AIM The aim of this prospective study was to find possible relationship between ROS production measured by chemiluminescence and flow cytometry in human semen and sperm DNA damage estimated by Sperm Chromatin Structure Assay. METHODS Study included 39 men from infertile couples and 23 fertile volunteers who served as a control group. Aliquot of neat semen was used for ROS detection by chemilu...

OBJECTIVE:We evaluated the effectiveness of spermwashing using the discontinuous two-layer density gradient centrifugation method to remove antisperm antibodies attached to the sperm surface. METHOD: We prospectively enrolled sixty-six men with unexplained infertility who were seeking evaluation. Each patient delivered one semen specimen for the study. We determined antisperm antibody levels us...

BACKGROUND The influence of ejaculatory abstinence (EA) on semen parameters and subsequent reproductive outcome is still debatable; hence understanding the impact of EA on sperm structural and functional integrity may provide a valuable information on predicting successful clinical outcome. OBJECTIVE To understand the influence of EA on sperm chromatin maturity, integrity, longevity and globa...

Heparin binding proteins (HBPs) are produced by accessory glands. These are secreted into the seminal fluid, bind to the spermatozoa at the time of ejaculation, favour capacitation, acrosome reaction, and alter the immune system response toward the sperm. The present study was conducted with an objective to assess the effect of purified seminal plasma-HBPs (SP-HBPs) on cross bred cattle bull sp...

In this paper, we present Neural Adaptive Tomography (NeAT), the first adaptive, hierarchical neural rendering pipeline for tomography. Through a combination of features with an adaptive explicit representation, achieve reconstruction times far superior to existing inverse methods. The representation improves efficiency by facilitating empty space culling and concentrating samples in complex re...

Vol. 11 | No. 02 | MarchApril 2014 | UROLOGY JOURNAL Vitrification‎has‎brought‎about‎important‎changes‎in‎cryopreservation‎and‎human‎fertility‎preservation.‎Easiness‎and‎speed‎and‎no‎need‎for‎costly‎freezing‎technologies‎ are‎reasons‎for‎its‎rapid‎development.‎Vitrification‎is‎the‎solidification‎of‎a‎liquid‎ without‎crystallization.‎As‎cooling‎continues,‎however,‎the‎molecular‎waves‎in‎the‎liqu...