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Selection on Sperm Count, but Not on Sperm Morphology or Velocity, in a Wild Population of Anolis Lizards [PDF]

open access: yesCells, 2021
Sperm competition is a widespread phenomenon that shapes male reproductive success. Ejaculates present many potential targets for postcopulatory selection (e.g., sperm morphology, count, and velocity), which are often highly correlated and potentially ...
Ariel F. Kahrl   +6 more
doaj   +2 more sources

Influence of ejaculatory abstinence period on semen quality of 5165 normozoospermic and oligozoospermic Nigerian men: A retrospective study

open access: yesHealth Science Reports, 2022
Background and Aims Several studies have shown that the length of ejaculatory abstinence alters sperm quality. However, the available data are conflicting and none seems to exist in a Nigerian population.
Roland E. Akhigbe   +3 more
doaj   +1 more source

Abnormal Human Sperm Parameters Contribute to Sperm DNA Fragmentation in Men with Varicocele [PDF]

open access: yesThe World Journal of Men's Health, 2018
Purpose: This study was performed to evaluate and compare threshold sperm parameters and sperm DNA fragmentation index (DFI), and further analyzed whether sperm DFI could be predicted from sperm parameters in men with varicocele.
Yong-Seog Park   +5 more
doaj   +1 more source

Effects of exogenous oxytocin on the semen characteristics of the Indonesian wild cattle, banteng (Bos javanicus), collected by electroejaculation: Implications for semen collection techniques and genome resource banking

open access: yesTheriogenology Wild, 2023
Developing protocols that maximize the total sperm output during a semen collection from an endangered species is essential for strategic genome resource banking practices. Exogenous oxytocin has been administered to domestic bovid species prior to semen
James D. Gillis   +7 more
doaj   +1 more source

Sperm mitochondrial DNA copy number mediates the association between seminal plasma selenium concentrations and semen quality among healthy men

open access: yesEcotoxicology and Environmental Safety, 2023
Selenium (Se) is essential for successful male reproduction. However, the association of Se status with human semen quality remains controversial and the underlying mechanisms are poorly understood.
Heng-Gui Chen   +11 more
doaj   +1 more source

Effects of Sperm Parameters on Pregnancy Rate in Patients Undergoing Intrauterine Insemination

open access: yesGynecology Obstetrics & Reproductive Medicine, 2020
OBJECTIVE: In this study, the effects of sperm parameters on the success of intrauterine insemination were investigated. STUDY DESIGN: The data from 309 infertile couples who were admitted between 2012-2018 without a female factor were analyzed ...
Mehmet Solakhan, Mustafa Demir
doaj   +1 more source

Body mass index and age correlate with antioxidant supplementation effects on sperm quality: Post hoc analyses from a double-blind placebo-controlled trial [PDF]

open access: yes, 2020
Spermatozoa are vulnerable to lack of energy and oxidative stress as a result of elevated levels of reactive oxygen species. Therefore, it is essential that appropriate nutrients are available during maturation.
Agarwal, Ashok   +9 more
core   +1 more source

Effects of Normal Morphology Sperm Count on Fertilization Time in Infertile Couples with Teratospermic Males: An Evaluation with an Embryoscope

open access: yesJournal of Urological Surgery, 2022
Objective:Incubation of the embryo is the vital step in assisted reproductive techniques. Embryoscope systems are incubators that keep the embryo stable and allow for continuous observation without opening the lid.
Elif Ganime Aygun, Emine Karabük
doaj   +1 more source

Safe Medication with Remdesivir for COVID-19 in Patients with Infertility [PDF]

open access: yesTranslational Research in Urology, 2023
Introduction: SARS-CoV-2, also known as COVID-19, emerged in China in December 2019. SARS-CoV-2 viruses use angiotensin-converting enzyme 2 (ACE2) as a receptor to enter cells.
Ali Tavoosian   +5 more
doaj   +1 more source

The Effect Of Air Temperature On Quality Of Sperm In Diyarbakir: An Analysis Over Six Years

open access: yesVan Tıp Dergisi, 2022
INTRODUCTION: There are many studies focusing on the effect of environmental conditions on human sperm quality. Therefore, we aimed to evaluate the possible effects of environmental factors such as air temperature and humidity, sun exposure time and ...
Muhamet Afsin, Ayse Feyda Nursal
doaj   +1 more source

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