نتایج جستجو برای: semen processing
تعداد نتایج: 513033 فیلتر نتایج به سال:
Management of people infected by HTLV-1 in assisted reproductive technology (ART) is a rare event. Since HTLV is sexually transmitted, HTLV serodiscordant couples have to systematically use condoms. The sperm processing (centrifugation on density gradient) performed for semen of HIV-infected men was applied. Detection of HTLV-1 provirus DNA was negative before and after sperm processing, allowi...
The risk of human immunodeficiency virus (HIV) transmission to the female partner, or potential offspring of an HIV-1 infected man can be reduced using semen decontamination procedures before assisted reproductive treatment (ART). The objective of this study was to determine the efficiency of decontaminating semen samples (n = 186) from 95 HIV-1 sero-positive patients. Aliquots of neat semen we...
The WHO “Laboratory manual for the Examination and processing of human semen” is a reference guide, firstly published in 1980, to standardize the procedures for the examination of human semen. It has been updated three times; the last version was published in 2010 (1) It provided guidance about many aspect of semen examination like: semen collection, macroscopic and microscopic examinations, im...
The current technology to sort X and Y chromosome bearing sperm population requires individual identification and selection of spermatozoa in a modified high-speed flow cytometer. For farm animal species, the technology is capable of producing sexed sperm at greater than 90% purity. However, only in the bovine, the technology has reached a developmental level that allows its commercial applicat...
Selection for 11 generations in swine for ovulation rate (OR) or uterine capacity (UC) resulted in significant changes in component traits of litter size. Our objective was to conserve the unique germplasm for the future and to characterize sperm quality as a correlated response to the selection criterion imposed compared to an unselected control line (CO). Boars representing genetic diversity ...
Background and Objectives: Antioxidant alpha lipoic acid and β-defensin 1 protein may have a positive effect on the quality of sperm parameters. In this study, the effect of sperm incubation with alpha lipoic acid antioxidant and β-defensin 1 protein were assessed on sperm motility and viability at different times. Methods: In this experimental study, routine semen analysis was carried out o...
Background and Objective: Infertility refers to the failure in achieving pregnancy of a couple after one year of regular sexual intercourse without using a protection method. The purpose of this research work was to evaluate the current status of the test and quality control performance in semen analysis in selected laboratories. Material and Methods: The...
The present work describes experiments undertaken to evaluate the usefulness of selected physicochemical indices of semen, cell membrane integrity and sperm chromatin structure for the assessment of boar semen sensitivity to processes connected with pre-insemination procedures. The experiments were carried out on 30 boars: including 15 regarded as providers of sensitive semen and 15 regarded as...
Background: The risk of hepatitis C virus (HCV) transmission during assisted reproductive techniques (ARTs) is still disputed and no report concerning its prospective evaluation is available. The aim of this 4-year follow-up multicentre study that enrolled 86 HCV-serodiscordant couples was to determine whether a sperm-processing method was able to reduce levels of HCV in semen and the risk of H...
The present study was conducted with an objective of establishing a relationship between various routine semen evaluation parameters. Work was conducted at Sperm Station Palampur, Himachal Pradesh, on the semen from five Jersey X local hill cattle crossbred breeding bulls. A total of 40 ejaculates (8 from each bull), were analysed at five different stages of processing namely post dilution, pos...
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