Results 101 to 110 of about 489,854 (362)

Sexual selection in a simultaneous hermaphrodite : mate choice and sperm utilization patterns [PDF]

, 2011
Sexual selection processes, in general, are distinguished in precopulatory and postcopulatory mechanisms. In the animal kingdom, precopulatory mechanisms are related to mate competition and mate choice before the copulation.
Kupfernagel, Sandra
core   +1 more source

The Landscape and Regulation of Histone Crotonylation in Mammalian Gametes and Early Embryos

Advanced Science, EarlyView.
Histone crotonylation undergoes a genome‐wide transition from broad domains to canonical narrow peaks during minor zygotic genome activation (ZGA). This remodeling is required for proper major ZGA and blastocyst formation. Disruption of this transition by transcriptional inhibition, metabolic perturbation, or HDAC1 dysfunction impairs embryonic ...
Shenli Yuan, Yelian Yan, Yalin Liang, Kanghua Zhong, Zhican Fu, Xiaobo Wang, Chao Liu, Tao Huang, Keliang Wu   +8 more
wiley   +1 more source

Paternal Caffeine Exposure Programs Offspring Stress Vulnerability via Sperm Dlk1‐Dio3 Imprinting‐Directed Remodeling of a Novel Neural Circuit

Advanced Science, EarlyView.
The study elucidates that paternal preconception stress can drive offspring hyperresponsivity of the stress system via hypomethylation of a specific DNA region in sperm. This key link is confirmed in a cohort of prospective fathers: the epigenetic alteration is associated with elevated stress hormone levels.
Mengxi Lu, Gaole Dai, Sen Zhu, Shuai Zhang, Tingting Wang, Yuan Meng, Fang Yang, Xiaoyi Han, Hui Wang, Hao Kou, Dan Xu   +10 more
wiley   +1 more source

A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success

, 2013
Engqvist L. A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution.
Engqvist, Leif, Engqvist, Leif ; https://orcid.org/   +1 more
core   +1 more source

Implications of sperm banking for health-related quality of life up to 1 year after cancer diagnosis [PDF]

, 2013
Background: Sperm banking is recommended for all men diagnosed with cancer where treatment is associated with risk of longterm gonadatoxicity, to offer the opportunity of fatherhood and improved quality of life.
Pacey, Allan, Stark, D., A Pacey, C Eiser, Morris, K., Rowe, Richard, Merrick, Hannah, Merrick, H., Arden-Close, E., Morris, Kate, R Rowe, Eiser, Christine, Arden-Close, Emily, Stark, Daniel, Pacey, A., Rowe, R., Eiser, C., K Morris, D Stark, H Merrick, E Arden-Close, Pacey, A.; id_orcid   +21 more
core   +1 more source

Natural Resistance to Ovarian Hyperstimulation Syndrome in Estrildid Finches Reveals Macrophage GPR183 as a Potential Therapeutic Target

Advanced Science, EarlyView.
Ovarian macrophage depletion reverses OHSS resistance in estrildid finches and exacerbates OHSS symptoms in rats. Activating macrophage GPR183 alleviates OHSS by reducing pro‐inflammatory factors, increasing immunomodulatory molecules, remodeling CD44/SDC4‐mediated communication, and restoring immune homeostasis.
Xiaofei Yan, Yongjie Huang, Jiabao Yang, Su Ma, Songsong Liu, Xuan Huang, Juergen Brosius, Huaping Zheng, Bing Yao, Li Chen, Shanshan Lai, Cheng Deng   +11 more
wiley   +1 more source

KIF2A Upregulates PI3K/AKT Signaling through Polo-like Kinase 1 (PLK1) to Affect the Proliferation and Apoptosis Levels of Eriocheir sinensis Spermatogenic Cells

Biology
E. sinensis is an animal model for studying the reproduction and development of crustaceans. In this study, we knocked down the Es-Kif2a gene by injecting dsRNA into E.
Yan-Shuang Zhao, Ding-Xi Liu, Fu-Qing Tan, Wan-Xi Yang   +3 more
doaj   +1 more source

Measuring Sperm DNA Fragmentation and Clinical Outcomes of Medically Assisted Reproduction: A Systematic Review and Meta-Analysis

PLoS ONE, 2016
Sperm DNA fragmentation has been associated with reduced fertilization rates, embryo quality, pregnancy rates and increased miscarriage rates. Various methods exist to test sperm DNA fragmentation such as the sperm chromatin structure assay (SCSA), the ...
M. Cissen, M. van Wely, I. Scholten, S. Mansell, J. D. de Bruin, B. Mol, D. Braat, S. Repping, G. Hamer   +8 more
semanticscholar   +1 more source

Sperm competition and sperm length in shorebirds

, 1999
We investigated how sperm morphology varies across 16 species of shorebirds in the Scolopacidae, Charadriidae, and Jacanidae. Sperm were significantly longer in nonmonogamous than in socially monogamous species.
Briskie, J V, Johnson, D D P
core  

Studies on the sperm reservoir of the pig oviduct [PDF]

, 2003
During sperm transport in the female pig a proportion of spermatozoa are arrested, often for 24 h or more, in a particular segment of the utero-tubal junction (UTJ) and the adjacent tubal isthmus, where a sperm reservoir (SR) is built up.
Tienthai, Paisan
core