Results 61 to 70 of about 512 (91)

Pig Seminal Plasma Extracellular Vesicles Enhance Motility During Preservation of Epididymal Spermatozoa but Impair Capacitation and IVF Parameters

Andrology, Volume 14, Issue 5, Page 1249-1260, July 2026.
ABSTRACT Background Extracellular vesicles (EVs) produced by accessory sex glands play a key role in sperm functionality, influencing motility, viability, acrosome integrity, metabolic activity, and capacitation. Most studies on the effects of EVs on spermatozoa have focused on ejaculated spermatozoa, which have already been exposed to their own native
Ana Moya‐Fernández, Santa María Toledo‐Guardiola, Peter Silke, Sergio Navarro‐Serna, Carmen Matás   +4 more
wiley   +1 more source

Clinical Features and PLCZ1 Gene Variants in Two Cases of Male Infertility: A Case Series and Literature Review

Molecular Genetics &Genomic Medicine, Volume 14, Issue 6, June 2026.
Our study expands the variant spectrum of PLCZ1, enriches the clinical characteristics of PLCZ1, and provides a solid base for the genetic counseling, diagnosis, and treatment of this condition. ABSTRACT Background Variations in the PLCZ1 gene can lead to male infertility (MIM #617214), an autosomal recessive disorder characterized by failure or ...
Jinwei Yang, Bo Yan, Zhizhuo Wei, Zijing Niu, Tongguang Wang, Yan Wei, Fangzhu Wang, Wei Jiang, Lin Zhang, Yue Da, Huanjing Wang, Yali Ni, Zhiqiang Wang   +12 more
wiley   +1 more source

Update of the risk assessment on dioxins and dioxin‐like PCBs in feed and food

EFSA Journal, Volume 24, Issue 6, June 2026.
Abstract The European Commission asked EFSA to update its 2018 risk assessment on polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) and dioxin‐like polychlorinated biphenyls (DL‐PCBs) in feed and food, based on the 2022 WHO Toxic Equivalency Factors (WHO2022‐TEFs).
EFSA Panel on Contaminants in the Food Chain (CONTAM Panel), Helle Katrine Knutsen, Agneta Åkesson, Vasileios Bampidis, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Gisela Degen, Antonio Hernández‐Jerez, Tim Hofer, Christer Hogstrand, Stefano Landi, Jean‐Charles Leblanc, Kyriaki Machera, Evangelia Ntzani, Isabelle P. Oswald, Guido Rychen, Salomon Sand, Katharina Vejdovszky, Barbara Viviani, Jesús del Mazo, Andy Hart, Dieter Schrenk, José Cortiñas Abrahantes, Luisa Ramos Bordajandi, Francesca Riolo, Tuuli Tauriainen, Ron Hoogenboom   +27 more
wiley   +1 more source

PFOA exposure decreases acrosome reaction and increases DNA oxidative damage by impairing the sperm head shaping in mice

Ecotoxicology and Environmental Safety
Perfluorooctanoic acid (PFOA) is a reproductive toxicant, but its effects on sperm head shaping and acrosome reaction remain unknown. Adult male Bal b/c mice were given 0, 2 or 10 mg/kg/day of PFOA for 6 weeks by gavage. Elevated sperm head malformations
Chuan Wang, Rui Yang, Wei Hu, Shi-Hao Zhang, Feng-Wen Niu, Xiao-Yi Zhang, Qing-Lin Ye, De-Xiang Xu, Zhi-Hui Zhang, Dong-Dong Xie   +9 more
doaj   +1 more source

Induction of Acrosome Reaction by Calcium Ionophore A23187 in Sperm Separated by Two-layer Percoll Gradient Method

Siriraj Medical Journal, 2003
The aim of this study was to compare thepercentages of sperm with an acrosome reaction between those with and without calcium ionophore A23187 induction after two-layer Percoll gradient separation.
Roungsin Choavaratana, Darapa Manoch, Nuannat Treeratanaporn, Somboon Kunathikom   +3 more
doaj  

MicroRNAs and Their Associated Genes Regulating the Acrosome Reaction in Sperm of High- versus Low-Fertility Holstein Bulls

Animals
Bioinformatics envisage experimental data as illustrated biological networks, exploring roles of individual proteins and their interactions with other proteins in regulation of biological functions.
Vanmathy Kasimanickam, Ramanathan Kasimanickam   +1 more
doaj   +1 more source

Effect of acrosome reaction progress in frozen-thawed boar spermatozoa on the efficiency of in vitro oocyte fertilization

Veterinární Medicína, 2010
A good functional status of cryopreserved boar spermatozoa is very important for successful fertilization of porcine oocytes and in vitro embryo production.
S. Martecikova, P. Hulinska, Z. Reckova, A. Pavlik, M. Jeseta, M. Machatkova   +5 more
doaj   +1 more source

Role of tyrosine phosphorylation in sperm capacitation / acrosome reaction

Reproductive Biology and Endocrinology, 2004
Capacitation is an important physiological pre-requisite before the sperm cell can acrosome react and fertilize the oocyte. Recent reports from several laboratories have amply documented that the protein phosphorylation especially at tyrosine residues is
Rajesh Preeti B, Naz Rajesh K
doaj   +1 more source

Effects of pentoxifylline treatment before freezing on motility, viability and acrosome status of poor quality human spermatozoa cryopreserved by the liquid nitrogen vapor method

Brazilian Journal of Medical and Biological Research, 2007
The objective of the present study was to investigate the effects of the direct addition of pentoxifylline (PF) to the ejaculates of men with poor sperm quality before freezing on post-thaw sperm motility, viability, acrosome integrity, and agonist ...
S.C. Esteves, D.M. Spaine, A.P. Cedenho
doaj  

The correlation between sperm percentage with a small acrosome and unexplained in vitro fertilization failure

BMC Pregnancy and Childbirth
Purpose Since the unexplained in vitro fertilization failure occurs frequently, it is of great importance and clinical value to identify potential underlying predictors.
Chuyan Li, Ya Ni, Lingnv Yao, Jiajie Fang, Nan Jiang, Jing Chen, Wenqin Lin, Hanchen Ni, Haiyan Zheng   +8 more
doaj   +1 more source