Results 91 to 100 of about 474,034 (395)

Male sperm storage compromises sperm motility in guppies [PDF]

Biology Letters, 2014
Sperm senescence can have important evolutionary implications due to its deleterious effects on sperm quality and offspring performance. Consequently, it has been argued that polyandry (female multiple mating) may facilitate the selection of younger, and therefore competitively superior, sperm when ejaculates from multiple males compete ...
GASPARINI, CLELIA, J. L. Kelley, J. P. Evans   +2 more
openaire   +2 more sources

PSMA8‐Containing 20S Proteasome Regulates Spermiogenesis and Male Fertility

Advanced Science, EarlyView.
PSMA8 assembles s20S proteasome that degrades specific substrates in elongating spermatids. Degradation of s20S‐substrates activates translation of FXR1‐target mRNAs, which are essential for mitochondrial sheath formation and sperm morphogenesis.
Huiwen Cao, Qianting Zhang, Wei Xu, Anxuan Fang, Haomang Xu, Cheng Qiu, Lugeng He, Chao Yu   +7 more
wiley   +1 more source

Cryoprotectant-free vitrification of human spermatozoa in new artificial seminal fluid [PDF]

, 2016
Vitrification is a new method that has been recently introduced in Assisted Reproduction Technique programs. The aim of this study was to design a new medium similar to normal human seminal fluid (SF), formulation artificial seminal fluid (ASF), and to ...
Agha Rahimi, A., Khalili, M. A., MIGLIETTA, SELENIA, Moradi, A., NOTTOLA, Stefania Annarita   +4 more
core   +1 more source

Differential Sperm Motility Scoring and Sperm ATP Concentrations [PDF]

Archives of Andrology, 1993
Sperm motility is one of the most important parameters in semen analysis. In this study the motility scoring method of Hellinga was used. Adenosine triphosphate (ATP) is the main energy source used by the sperm flagellum to initiate and propagate forward motility.
D, Du Toit, M S, Bornman, M P, Van Der Merwe, D J, Du Plessis, J M, Oosthuizen   +4 more
openaire   +2 more sources

The In Vitro Impact of the Herbicide Roundup on Human Sperm Motility and Sperm Mitochondria

Toxics, 2016
Toxicants, such as herbicides, have been hypothesized to affect sperm parameters. The most common method of exposure to herbicides is through spraying or diet. The aim of the present study was to investigate the effect of direct exposure of sperm to 1 mg/
G. Anifandis, G. Amiridis, K. Dafopoulos, A. Daponte, E. Dovolou, Eleftherios Gavriil, V. Gorgogietas, E. Kachpani, Z. Mamuris, C. Messini, K. Vassiou, A. M. Psarra   +11 more
semanticscholar   +1 more source

Nanoscale Spatial Organization of ARC High‐ and Low‐Order Assemblies at Excitatory Synapses

Advanced Science, EarlyView.
ARC (Activity‐Regulated Cytoskeleton‐Associated protein) mediates synaptic plasticity by forming nanoscale assemblies in neurons. Using super‐resolution microscopy and time‐resolved anisotropy with targeted tagging, the study reveals low‐order ARC assemblies at synapses colocalizing with AMPARs, semi‐circular structures at endocytic zones, and 60–80 nm
Martina Damenti, Giovanna Coceano, Mariline Mendes Silva, Jonatan Alvelid, Chiara Sgattoni, Andrea Volpato, Lea Rems, Luciano A. Masullo, Eduard M. Unterauer, Rafal Kowalewski, Lucie Delemotte, Erdinc Sezgin, Ralf Jungmann, Ilaria Testa   +13 more
wiley   +1 more source

Exceptional sperm cooperation in the wood mouse [PDF]

, 2002
Spermatozoa from a single male will compete for fertilization of ova with spermatozoa from another male when present in the female reproductive tract at the same time.
AH Harcourt, BA Shepherd, C Holt, D Haig, DM De Kretser, E Kim, F Hayashi, GF Friend, Harry Moore, HD Moore, HD Moore, HD Moore, HD Moore, J Sivinski, JM Bedford, Katerina Dvoráková, KC Kleene, LR Fraser, Nicholas Jenkins, PM Wassarman, R Dawkins, R Trivers, R Yanagimachi, RR Baker, RR Baker, TE Tew, TR Birkhead, TR Birkhead, V Hanak, WD Hamilton, WG Breed, William Breed, X Xu   +32 more
core   +1 more source

Sperm motility and morphology changes in rats exposed to cadmium and diazinon

Reproductive Biology and Endocrinology, 2016
BackgroundHumans are ubiquitously exposed to multiple environmental contaminants. Consequences of combined action on the reproductive system remain unknown.
M. Adamkovicova, R. Toman, M. Martiniakova, R. Omelka, R. Babosová, Vladimíra Krajčovičová, B. Grosskopf, P. Massányi   +7 more
semanticscholar   +1 more source

Glutamine Deprivation Triggers Tribbles Homolog 3 Dependent G‐Quadruplex Resolution to Maintain DNA Repair and Tumor Survival

Advanced Science, EarlyView.
Glutamine deprivation triggers transient DNA damage yet activates adaptive repair in hepatocellular carcinoma cells. We identify TRIB3 as a stress‐induced nuclear scaffold that associates with DDX5 and G‐quadruplex DNA atBRCA1 andRAD51AP1 promoters. TRIB3 loss increases G4 accumulation, suppresses HR gene transcription, elevates γ‐H2A.X, and sensitizes
Qiang Ji, Xuedan Sun, Zhangran Sun, Mengfan Li, Xinyu Cheng, Shuai Tian, Rick F. Thorne, Jinming Li, Guangzhi Liu, Mian Wu, Xiaoying Liu   +10 more
wiley   +1 more source

Sperm Motility

Citation: 'sperm motility' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10977 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial
Evangelini Evgeni, Priyank Kothari
openaire   +2 more sources