Results 101 to 110 of about 5,280,557 (249)

A mechanism for differential release of acrosomal enzymes during the acrosome reaction [PDF]

Biochemical Journal, 1991
To study the organization of fertilization enzymes in the sperm acrosome, we isolated and characterized two physicochemically distinct acrosomal fractions of guinea-pig spermatozoa. A soluble fraction contained the 25,000-Mr acrosomal autoantigen, AA1, and most of the acrosomal hyaluronidase and dipeptidyl peptidase II activity. A particulate fraction,
D M, Hardy, M N, Oda, D S, Friend, T T, Huang   +3 more
openaire   +2 more sources

Improvement of Mouse Spermatozoa Freezing at ‐80°C With Ascorbic Acid 2‐Glucoside at Thawing Phase

Andrology, EarlyView.
ABSTRACT Background Sperm cryopreservation is the most common method to maintain a great number of mutant mouse lines. However, the use of liquid nitrogen (LN2) for freezing presents considerable problems in terms of cost, safety, and accessibility. For this reason, the storage of semen samples at ‐80° in ultra‐freezers has been increasingly used in ...
Alessia Paradiso, Renata Paoletti, Simone Cassetti, Nicola Bernabò, Barbara Barboni, Marcello Raspa, Ferdinando Scavizzi   +6 more
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Prostasome-like vesicles stimulate acrosome reaction of pig spermatozoa

Reproductive Biology and Endocrinology, 2008
Background The presence of small membranous particles characterizes the male genital fluids of different mammalian species. The influence of semen vesicles, denominated prostasomes, on sperm functional properties has been well documented in humans, but ...
Marcianò Vito, Siciliano Laura, Carpino Amalia   +2 more
doaj   +1 more source

Protective Effect of Intracellular Compounds of Lactobacillus plantarum on Goat Sperm Quality During Cryopreservation

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
Intracellular compounds from Lactobacillus plantarum were added to a goat sperm cryopreservation extender. A concentration of 20 µL/mL improved post‐thaw sperm quality, whereas higher concentrations (80–100 µL/mL) had detrimental effects. ABSTRACT Background Cryopreservation of sperm is a key strategy for preserving and transmitting the genetic traits ...
Farshad Ariyan, Amjad Farzinpour, Abbas Farshad, Aram Sharifi   +3 more
wiley   +1 more source

Development of an analytical method to determine malondialdehyde as an oxidative marker in cryopreserved bovine semen [PDF]

, 2015
Frozen sperm is widely used in artificial insemination of cattle as well as other animal species. As a consequence of the freezing and thawing processes of semen, an excess of reactive oxygen species (ROS) are formed.
Nazareno, Mónica Azucena, Palma, Gustavo Adolfo, Reineri, Pablo Sebastian, Yonny, Melisa Evangelina   +3 more
core   +2 more sources

Use of Pentoxifylline to Improve Seminal Parameters in Dogs

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
A single oral dose of pentoxifylline (10 mg/kg) administered 40 min before ejaculation significantly improved sperm concentration and progressive motility in dogs. The effect was most pronounced in oligospermic subjects, supporting pentoxifylline as a rapid, well‐tolerated adjunct therapy for canine subfertility .
Vincenzo Cicirelli, Matteo Burgio, Lorenza Frattina, Francesco Caprio, Domenico Robbe, Federica Ariu, Annalisa Rizzo   +6 more
wiley   +1 more source

Human fertilization: epididymal hCRISP1 mediates sperm zona pellucida binding through its interaction with ZP3 [PDF]

, 2014
Human epididymal CRISP1 (hCRISP1) associates with sperm during maturation and participates in gamete fusion through egg complementary sites. Its homology with both rodent epididymal CRISP1 and CRISP4 reported to participate in the previous stage of sperm
Battistone, Maria Agustina, Blaquier, J. A., Busso, Dolores, Chirinos, M., Cuasnicu, Patricia Sara, Larrea, F., Maldera, Julieta Antonella, Raffo, F. G. E., Weigel Muñoz, Mariana   +8 more
core   +2 more sources

Innate Immunity and Microbial Recognition in Reproduction: From Barrier Defense to Maternal–Fetal Tolerance

The FASEB Journal, Volume 40, Issue 8, 30 April 2026.
Graphical abstract illustrating the barrier defense–tolerance framework of reproductive innate immunity. Across the female and male reproductive tracts and the maternal–fetal interface, epithelial barriers, innate sensors, immune cells, and microbial signals are integrated to preserve reproductive homeostasis.
Xianlin Rao, Li Zou, Yao Yao, Changling Liu   +3 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