Results 31 to 40 of about 285,253 (302)
WormBook, 2006 Form follows function, and this maxim is particularly true for the nematode sperm cell. Motility is essential for fertilization, and the process of spermatogenesis culminates in the production of a crawling spermatozoon with an extended pseudopod.
openaire +2 more sources
Semen collection and evaluation of captive coatis (Nasua nasua)
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012 Semen samples (n=105) were collected through eletroejaculation from six adult male coatis (Nasua nasua) between January 2007 and December 2008 at Universidade Federal de Mato Grosso Zoo, Cuiabá, Brazil. Mean values were: volume (mL); concentration (sperm/
R.C.R. Paz +5 more
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WormBook, 2014 Form follows function, and this maxim holds particularly true for the nematode sperm cell. Motility is essential for fertilization, and the process of spermatogenesis culminates in the production of a crawling spermatozoon with an extended pseudopod.
openaire +2 more sources
Role of oxidative stress and antioxidants in domestic and non-domestic cat spermatozoa [PDF]
, 2010 Living cells, including spermatozoa, stored under aerobic conditions require oxygen to support their normal metabolism. Excessive levels of metabolites (reactive oxygen species; ROS) can cause cell damage or lipid peroxidation.
Thuwanut, Paweena
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Influence of sperm cryopreservation on sperm motility and proAKAP4 concentration in mice
Reproductive Medicine and Biology, 2022 Background The protein proAKAP4 is crucial for sperm motility and has been suggested as an indicator of male fertility. We determined the relationship between proAKAP4 concentration and sperm motility parameters in mice, and investigated the effects of ...
Auke Boersma +8 more
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Avian Research, 2019 Background Sperm motility parameters, which can be measured objectively and repeatedly by a computer-assisted sperm analysis (CASA) system, are important indicators of sperm quality. However, the sperm motility parameters assessed by a CASA system can be
Ying Yang +6 more
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Hydrodynamic propulsion of human sperm [PDF]
, 2009 The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
Green, Richard B. +7 more
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The World Journal of Men's Health, 2023 Purpose: Whether COVID-19 reduces male fertility remains requires further investigation. This meta-analysis and systematic review evaluated the impact of COVID-19 on male fertility.
Shangren Wang +6 more
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The association between male infertility and sperm disomy: Evidence for variation in disomy levels among individuals and a correlation between particular semen parameters and disomy of specific chromosome pairs [PDF]
, 2004 BACKGROUND: The association between infertility and sperm disomy is well documented. Results vary but most report that men with severely compromised semen parameters have a significantly elevated proportion of disomic sperm.
Xiao P Zhai +27 more
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High concentration of dopamine treatment may induce acceleration of human sperm motility
Reproductive Medicine and Biology, 2022 Purpose In humans, catecholamines (including dopamine) have been identified in semen and fallopian tubes, while dopamine D2 receptors (D2DR) are found in the sperm midpiece region.
Hiroki Kanno +5 more
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