Results 31 to 40 of about 566,665 (344)

Does air pollution exposure affect semen quality? Evidence from a systematic review and meta-analysis of 93,996 Chinese men

Frontiers in Public Health, 2023
BackgroundAir pollution may impair male fertility, but it remains controversial whether air pollution affects semen quality until now.ObjectivesWe undertake a meta-analysis to explore potential impacts of six pollutants exposure during the entire window (
Junjie Liu, Yanpeng Dai, Runqing Li, Jiayi Yuan, Quanxian Wang, Linkai Wang   +5 more
doaj   +1 more source

“Seminal testosterone”, rising viewpoint of local spermatogenesis in nonobstructive azoospermia: One center long-term bidirectional cohort study

Frontiers in Endocrinology, 2022
ObjectiveReproductive hormones are a traditional good method to evaluate spermatogenesis but might not accurately represent local spermatogenesis. To find a more accurate method, seminal reproductive hormones were studied.MethodsA bidirectional cohort ...
Huang Liu, Houbin Zheng, Yuehua Li, Yuqian Tang, Hongbo Peng, Qianyi Li, Jiaming Zhuang, Yingyi Zhou, Yu Zhou, Xiang’an Tu, Xinzong Zhang   +10 more
doaj   +1 more source

Co-evolution of male and female reproductive traits across the Bruchidae (Coleoptera) [PDF]

, 2008
1. Despite the obvious importance of spermatozoa to individual reproductive success a general explanation of variation in spermatozoan form and function is still lacking. In species with internal fertilization, sperm not only have to interact with the
Andrés, Bella, Boughman, Briskie, Brown, Dybas, Eady, Eady, Eady, Eberhard, Felsenstein, Freckleton, Gage, Gage, Gage, Gomendio, Gregory, Hosken, Hosken, Hosken, Howard, Ishihara, Jamieson, LaMunyon, LaMunyon, LaMunyon, Mbata, Miller, Minder, Morrow, Mukerji, Nilsson, Nilsson, Parker, Parker, Pitnick, Pitnick, Pitnick, Pitnick, Pitnick, Presgraves, Price, Purvis, Rice, Rice, Ridley, Rugman-Jones, Rugman-Jones, Ryan, Savalli, Simmons, Stockley, Treganza, Tuda, Wade, Werner, Wilson, Zeh   +57 more
core   +1 more source

Male cancer patient sperm cryopreservation for fertility preservation: 10-year monocentric experience

Basic and Clinical Andrology, 2021
Résumé Contexte Lacryoconservation des spermatozoïdes, méthode efficace pour préserver lafertilité masculine, est très avantageuse pour les hommes atteints de cancer.Malheureusement, comme les médecins et les patients atteints de cancersignorent les ...
Xiao Liu, Bo Liu, Shasha Liu, Yang Xian, Wenrui Zhao, Bin Zhou, Xiao Xiao, Li Wang, Xiaofang Zhu, Bizhen Shu, Min Jiang, Fuping Li   +11 more
doaj   +1 more source

Jiawei Runjing Decoction Improves Spermatogenesis of Cryptozoospermia With Varicocele by Regulating the Testicular Microenvironment: Two-Center Prospective Cohort Study

Frontiers in Pharmacology, 2022
Objective: The aim of the study was to explore the evidence of JWRJD in the treatment of cryptozoospermia.Methods: A total of 162 cryptozoospermia patients with varicocele who refused to undergo surgery were included from January 2021 to December 2021 ...
Huang Liu, Huang Liu, Zhongwang Huang, Houbin Zheng, Zhiyong Zhu, Hui Yang, Xingzhang Liu, Tao Pang, Liping He, Hai Lin, Lei Hu, Qingqi Zeng, Qingqi Zeng, Lanying Han   +13 more
doaj   +1 more source

Evidence of the presence of calcium/calmodulin-dependent protein kinase IV in human sperm and its involvement in motility regulation [PDF]

, 2005
The mechanisms involved in the regulation of mammalian sperm motility are not well understood. Calcium ions (Ca(2+)) have been suggested to play a key role in the maintenance of motility; nevertheless, how Ca(2+) modulates this process has not yet been ...
Buffone, Mariano Gabriel, Chertihin, Olga, Herr, John C,, Jha, Kula N., Marin Briggiler, Clara Isabel, Vazquez, Monica Hebe, Visconti, Pablo E.   +6 more
core   +1 more source

Semen parameters are seriously affected in acephalic spermatozoa syndrome

Basic and Clinical Andrology, 2022
Résumé Contexte Des études antérieures ont rapporté que certains patients qui avaient des spermatozoïdes sans tête présentaient une mauvaise qualité du sperme, mais il n’y a eu aucune analyse systématique publiée sur la qualité du sperme chez les ...
Li-juan Ying, Lin Yu, Tingting Yang, Ying-bi Wu, Jin-yan Xu, Ye-lin Jia, Yan Zheng, Fuping Li   +7 more
doaj   +1 more source

Male sperm whale acoustic behavior observed from multipaths at a single hydrophone [PDF]

, 2005
Sperm whales generate transient sounds (clicks) when foraging. These clicks have been described as echolocation sounds, a result of having measured the source level and the directionality of these signals and having extrapolated results from biosonar ...
Adam, Olivier, Laplanche, Christophe, Lopatka, Maciej, Motsch, Jean-François   +3 more
core   +4 more sources

A genetic variant of the sperm-specific SLO3 K+ channel has altered pH and Ca2+ sensitivities [PDF]

, 2017
To fertilize an oocyte, sperm must first undergo capacitation in which the sperm plasma membrane becomes hyperpolarized via activation of potassium (K(+)) channels and resultant K(+) efflux.
Butler, Alice, Dzikunu, Victor, Ferreira, Juan J, Geng, Yanyan, Lybaert, Pascale, Magleby, Karl L, Salkoff, Lawrence, Santi, Celia M, Yuan, Peng   +8 more
core   +2 more sources

Re-sperm collection with a short abstinence time: a strategy for successful cryopreservation in cryptozoospermia [PDF]

Journal of Men's Health
Background: Recent studies suggest that short-term abstinence may improve semen parameters; however, its impact on cryptozoospermia remains underexplored.
Wen-Rui Zhao, Bo Liu, Xue-Feng Luo, Jin-Yan Xu, Chen Luo, Yuan Liu, Yang Xian, Fu-Ping Li   +7 more
doaj   +1 more source