Results 41 to 50 of about 1,568,056 (388)
Sperm DNA Fragmentation Index in Infertility Patients vs Normal Individuals: A Cross-sectional Study [PDF]
Journal of Clinical and Diagnostic Research, 2022 Introduction: Infertility is a major problem among married couples. The male factor contributes to around 30-40% of all cases of infertility. With advancing age, reducing sperm count may magnify the problem.
Manisha B Sinha +2 more
doaj +1 more source
Decline of semen quality among Chinese sperm bank donors within 7 years (2008-2014)
Asian Journal of Andrology, 2017 Semen from 5210 sperm bank donors was analyzed and trends in semen quality were evaluated at Shandong Human Sperm Bank between 2008 and 2014. After 2-7 days of abstinence, semen samples were collected.
Li Wang +5 more
doaj +1 more source
Journal of Urological Surgery, 2023 Objective:We investigated the effects of Coronavirus disease-2019 (COVID-19) vaccines on semen parameters in patients with idiopathic infertility who visited our urology clinic.Materials and Methods:Patients who visited our andrology clinic between ...
Eyüp Dil
doaj +1 more source
Disrupting the wall accumulation of human sperm cells by artificial corrugation [PDF]
Biomicrofluidics 9, 024122 (2015), 2015 Many self-propelled microorganisms are attracted to surfaces. This makes their dynamics in restricted geometries very different from that observed in the bulk. Swimming along walls is beneficial for directing and sorting cells, but may be detrimental if homogeneous populations are desired, such as in counting microchambers.
arxiv +1 more source
PLoS ONE, 2021 Poor sperm morphology and an elevated DNA fragmentation level are considered to be related to spermiogenesis malfunctions as a result of genetic mutations and effects of environmental factors, including industrial pollution.
Maxim Kleshchev +2 more
doaj +2 more sources
Automated Sperm Assessment Framework and Neural Network Specialized for Sperm Video Recognition [PDF]
arXiv, 2023 Infertility is a global health problem, and an increasing number of couples are seeking medical assistance to achieve reproduction, at least half of which are caused by men. The success rate of assisted reproductive technologies depends on sperm assessment, in which experts determine whether sperm can be used for reproduction based on morphology and ...
arxiv
Cooperation of Sperm in Two Dimensions: Synchronization, Attraction and Aggregation through Hydrodynamic Interactions [PDF]
Phys. Rev. E 78, 061903 (2008), 2008 Sperm swimming at low Reynolds number have strong hydrodynamic interactions when their concentration is high in vivo or near substrates in vitro. The beating tails not only propel the sperm through a fluid, but also create flow fields through which sperm interact with each other.
arxiv +1 more source
Obese father's metabolic state, adiposity, and reproductive capacity indicate son's reproductive health [PDF]
, 2014 ObjectiveTo determine whether dietary and exercise regimes in obese males can provide a novel intervention window for improving the reproductive health of the next generation.DesignExperimental animal study.SettingUniversity research facilities.Animal(s ...
Adiga +55 more
core +1 more source
Swimming by spinning: spinning-top type rotations regularize sperm swimming into persistently symmetric paths in 3D [PDF]
arXiv, 2023 Sperm modulate their flagellar symmetry to navigate through complex physico-chemical environments and achieve reproductive function. Yet it remains elusive how sperm swim forwards despite the inherent asymmetry of several components that constitutes the flagellar engine.
arxiv
Prague Medical Report, 2013 Metronidazole (MTZ) is a common antiparasitic and antibacterial drug. The drug and X-ray induced effects in mouse sperm count, sperm head abnormality and some oxidative stress parameters have been studied.
S. Singh, L. Das Roy, Sarbani Giri
doaj +1 more source