Results 111 to 120 of about 54,668 (320)

Sperm morphology in five species of cicadettine cicadas (Hemiptera: Cicadomorpha: Cicadidae) [PDF]

, 2006
Mature spermatozoa from five species of cicadas of the subfamily Cicadettinae (Quintilia wealei, Melampsalta leucoptera, Stagira simplex, Xosopsaltria thunbergi and Monomatapa matoposa) were examined by light and electron microscopy.
Chawanji, A S, Hodgson, A N, Villet, Martin Herrer   +2 more
core   +2 more sources

Evaluation of acrosomal status and sperm viability in fresh and cryopreserved specimens by the use of fluorescent peanut agglutinin lectin in conjunction with hypo-osmotic swelling test

International Brazilian Journal of Urology, 2007
OBJECTIVE: In this study, we evaluated whether the hypo-osmotic swelling test (HOST) can be used as a vital marker in combination with peanut agglutinin (PNA) - labeling in fresh and cryopreserved spermatozoa.
Sandro C. Esteves, Rakesh K. Sharma, Anthony J. Thomas Jr, Ashok Agarwal   +3 more
doaj   +1 more source

Expression, localization and functions in acrosome reaction and sperm motility of Ca(V)3.1 and Ca(V)3.2 channels in sperm cells: an evaluation from Ca(V)3.1 and Ca(V)3.2 deficient mice.: Cav3.1/3.2 channel functions in sperm physiology [PDF]

, 2007
International audienceIn spermatozoa, voltage-dependent calcium channels (VDCC) have been involved in different cellular functions like acrosome reaction (AR) and sperm motility. Multiple types of VDCC are present and their relative contribution is still
Arnoult, Christophe, Boisseau, Sylvie, Campbell, Kevin,, Chen, Chien-Chang, de Waard, Michel, Escoffier, Jessica, Kim, Daesoo, Serres, Catherine, Shin, Hee-Sup, Stamboulian, Séverine   +9 more
core   +3 more sources

Effect of platelet-activating factor (PAF) on stallion sperm motility, capacitation and the acrosome reaction [PDF]

, 2003
A. Odeh, John J. Dascanio, Thomas Caceci, James M. Bowen, LA Eng   +4 more
openalex   +1 more source

Quercetin Protects Goat Sperm Motility by Inhibiting Neutrophil Extracellular Traps and Maintaining Plasma Membrane and Acrosome Integrity

Veterinary Sciences
Enhancing or protecting sperm motility has always been a pivotal approach to improving the ewe pregnancy rate. Sperm motility is highly susceptible to the immune status of the reproductive tract.
Zhengkai Wei, Hongrong Hong, Wei Liu, Kaifeng He, Jiaxuan Wang, Xin Guo, Dezhi Zhang, Qianyong Li, Zhengtao Yang   +8 more
doaj   +1 more source

ADVANCED STUDIES ON IMPROVING SHEEP FERTILITY BY USING ARTIFICIAL MEANS OF REPRODUCTION [PDF]

Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2014
Artificial insemination (AI) in livestock is used to optimize reproduction efficiency. Compared to other semenpreservation methods, cryopreservation is an established industry used worldwide for performing AI.
Mostafa A.R. IBRAHIM, Stela ZAMFIRESCU, Andreea ANGHEL, Nicu DOBRIN, Ibrahim ABDELRAZEK, Mohamed E. El-SHARAWY, El Shenawy El SEIFY, Dorina MOCUTA   +7 more
doaj  

Evaluation of two diluents for the storage of fresh and cryopreserved semen of Harris hawk (Parabuteo unicinctus)

Austral Journal of Veterinary Sciences, 2017
Seminal storage, both fresh and cryopreserved, has contributed to the reproduction of wild birds in captivity, however, a method of predicting the fertilization capacity is needed.
José A. Herrera, Gustavo Calderón, Adrián Guzmán, Ana K. Vargas, Alejandro Ávalos, Ana M. Rosales   +5 more
doaj   +1 more source

Glass wool filtration leads to a higher percentage of spermatozoa with intact acrosomes: an ultrastructural analysis [PDF]

, 1998
K. Sterzik, M. De Santo, S Uhlich, F. Gagsteiger, Erwin Strehler   +4 more
openalex   +1 more source

Small GTPases in Acrosomal Exocytosis

, 2015
Regulated exocytosis employs a conserved molecular machinery in all secretory cells. Soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) and Rab superfamilies are members of this machinery. Rab proteins are small GTPases that organize membrane microdomains on organelles by recruiting specific effectors that strongly influence ...
Bustos, Matias Alberto, Lucchesi, Ornella, Ruete, María Celeste, Mayorga, Luis Segundo, Tomes, Claudia Nora   +4 more
openaire   +3 more sources

Acrosome biogenesis

Spermatogenesis, 2011
The acrosome is a unique membranous organelle located over the anterior part of the sperm nucleus that is highly conserved throughout evolution. This acidic vacuole contains a number of hydrolytic enzymes that, when secreted, help the sperm penetrate the
G. Berruti, C. Paiardi
semanticscholar   +1 more source