Results 41 to 50 of about 2,059,461 (220)

Protective Effects of Fenugreek and Stevia Extracts on Dexamethasone‐Induced Testicular Damage in a Rat Model

Food Safety and Health, EarlyView.
Fenugreek and stevia extracts protect against dexamethasone‐induced testicular damage in male rats by enhancing antioxidant defenses, improving sperm quality, and restoring hormonal balance, highlighting their potential as natural therapeutics for preventing corticosteroid‐induced reproductive toxicity.
Mosab Gad, Medhat Ibrahim A. Omar, Mohammed I. Elkhateeb, Ahmed A. Zaky   +3 more
wiley   +1 more source

Nitric oxide involvement in the acrosome reaction triggered by leptin in pig sperm

Reproductive Biology and Endocrinology, 2011
Background Nitric oxide (NO) is a signaling molecule produced by intracellular nitric oxide synthase (NOS) enzymes. This free radical appears to affect sperm capacitation, a maturation step preceding acrosome reaction. Recent studies have reported leptin
Guido Carmela, Giordano Francesca, Aquila Saveria, Rago Vittoria, Carpino Amalia   +4 more
doaj   +1 more source

Potential Neuroendocrine Disruption by Benzodiazepines and Its Impact on Male Fertility

Journal of Applied Toxicology, EarlyView.
ABSTRACT Neuroactive substances have emerged as potent endocrine disruptors affecting male reproductive health through central and peripheral mechanisms. Among these, benzodiazepines, which are widely used for the management of anxiety, insomnia, epilepsy, and neuromuscular disorders, are known as GABA A (gamma‐aminobutyric acid type A) receptor ...
Ana Clara Melo Andrade de Rodrigues, Julia Gonçalves Rodrigues, Marcos de Lucca Moreira Gomes, Fernanda Carolina Ribeiro Dias   +3 more
wiley   +1 more source

Regulation of the sperm acrosome reaction

, 2009
The acrosome is a large secretory granule that undergoes exocytosis when receptors on the sperm surface bind ligands found on the oocyte's extracellular matrix.
Savaria, Julie
core   +2 more sources

Characterization of expression patterns and dynamic relocation of Notch proteins during acrosome reaction of bull spermatozoa

Scientific Reports
Notch is a conserved cell-signaling pathway involved in spermatogenesis regulation. This study firstly evaluated the presence, localization patterns, acquisition origin and relation to acrosome reaction of Notch proteins in bull sperm.
Patrícia Diniz, Inês Leites, Mariana R. Batista, Ana Catarina Torres, Luísa Mateus, Luís Lopes-da-Costa, Elisabete Silva   +6 more
doaj   +1 more source

The effect of non-traditional cooling on dog sperm cryosurvival and ability to perform the acrosome reaction

Austral Journal of Veterinary Sciences, 2019
The objective of this study was to assess cryosurvival, plasma membrane fluidity, and capability of cryopreserved dog (Canis lupus familiaris) spermatozoa, cooled to –5 °C before freezing, to perform the acrosome reaction under the effect of progesterone
Luis D. Ortega-Morales, Alicia Alcantar-Rodriguez, Maria C. Espejel, Alfredo Medrano   +3 more
doaj   +1 more source

Impact of Chemotherapy on Sperm Functional Characteristics in Patients With Testicular Germ Cell Tumours

Andrology, EarlyView.
ABSTRACT Background Testicular germ cell tumours (TGCT) are the most common malignancies among young men and represent a major threat to reproductive health. Both the disease itself and oncological treatments, particularly chemotherapy, can compromise spermatogenesis and semen quality.
Ondrej Sanovec, Ondrej Simonik, Zuzana Kratka, Lukas Ded, Jana Vondrakova, Maryam Qasemi, Barbora Bryndova, Michala Krejci, Daniela Spevakova, Vishma Pratap Sur, Radomir Kren, Tomas Hradec, Pavel Skrobanek, Ludmila Boublikova, Libor Zamecnik, Tomas Buchler, Jiri Neuzil, Pavla Postlerova, Katerina Komrskova   +18 more
wiley   +1 more source

Expression of Tas1 taste receptors in mammalian spermatozoa [PDF]

, 2012
Background: During their transit through the female genital tract, sperm have to recognize and discriminate numerous chemical compounds. However, our current knowledge of the molecular identity of appropriate chemosensory receptor proteins in sperm is ...
Ulrich Boehm (180339), de Angelis Martin Hrabé, Breit, A., Dorke Meyer, Andreas Breit (180329), Hrabě de Angelis, M., Widmayer Patricia, Wolfgang Meyerhof, Boekhoff Ingrid, Boehm, Ulrich, Martin Hrabé de Angelis, Meyer, Dorke, Ulrich Boehm, Dorke Meyer (180311), Sandra Huebner, Gudermann, T., Boehm, U., Borth, Heike, Borth Heike, Meyerhof, Wolfgang, Susan Marschall, Huebner Sandra, Voigt, Anja, Meyerhof, W., Hrabé de Angelis, Martin, Huebner, S., Sandra Huebner (180323), Thomas Gudermann (77426), Huebner, Sandra, Heike Borth, Borth, H., Susan Marschall (180334), Meyerhof Wolfgang, Ingrid Boekhoff, Ingrid Boekhoff (180345), Heike Borth (180317), Andreas Breit, Meyer Dorke, Boekhoff, I., Voigt Anja, Thomas Gudermann, Anja Voigt, Voigt, A., Gudermann Thomas, Breit Andreas, Boehm Ulrich, Marschall Susan, Marschall, Susan, Widmayer, Patricia, Widmayer, P., Wolfgang Meyerhof (7851), Patricia Widmayer, Martin Hrabé de Angelis (10007), Patricia Widmayer (180314), Breit, Andreas, Boekhoff, Ingrid, Gudermann, Thomas, Anja Voigt (173059), Marschall, S., Meyer, D., Meyer, D. ; Voigt, A. ; Widmayer, P. ; Borth, H. ; Huebner, S. ; Breit, A. ; Marschall, S. ; Hrabé de Angelis, M. ; Boehm, U. ; Meyerhof, W. ; Gudermann, T. ; Boekhoff, I.   +60 more
core   +1 more source

Dose-response effects of estrogenic mycotoxins (zearalenone, alpha- and beta-zearalenol) on motility, hyperactivation and the acrosome reaction of stallion sperm

Reproductive Biology and Endocrinology, 2011
Background The aim of this study was to investigate the in vitro effects of the Fusarium fungus-derived mycotoxin, zearalenone and its derivatives alpha-zearalenol and beta-zearalenol on motility parameters and the acrosome reaction of stallion sperm ...
Colenbrander Ben, Pizzi Flavia, Sostaric Edita, Gadella Bart M, Stout Tom AE, Filannino Angela, Dell'Aquila Maria, Minervini Fiorenza   +7 more
doaj   +1 more source

Loss‐of‐Function Variants in CCDC189 Cause Human Oligoasthenoteratozoospermia by Disrupting Sperm Flagellar and Acrosomal Architecture

Andrology, EarlyView.
ABSTRACT Background Oligoasthenoteratozoospermia (OAT), characterized by reduced sperm count, impaired motility, and abnormal morphology, is a major cause of male infertility with substantial genetic heterogeneity. However, the underlying genetic etiology remains unresolved in a large proportion of affected individuals.
Jianteng Zhou, Ghulam Mustafa, Tingting Lin, Jingwei Ye, Huan Zhang, Hanwei Jiang, Kexin Yang, Guoning Huang, Qinghua Shi   +8 more
wiley   +1 more source