Results 21 to 30 of about 13,419 (163)

Effect of estrogens on boar sperm capacitation in vitro

Reproductive Biology and Endocrinology, 2010
Background Mammalian sperm must undergo a series of controlled molecular processes in the female reproductive tract called capacitation before they are capable of penetrating and fertilizing the egg.
Ded Lukas, Dostalova Pavla, Dorosh Andriy, Dvorakova-Hortova Katerina, Peknicova Jana   +4 more
doaj   +1 more source

The Modulation of Functional Status of Bovine Spermatozoa by Progesterone

Animals, 2021
The aim of this study is to identify the effects of progesterone (PRG) on the capacitation and the acrosome reaction in bovine spermatozoa. The fresh sperm samples were incubated with and without capacitation inductors (heparin, dibutyryl cyclic ...
Vitaly Denisenko, Irena Chistyakova, Natalia Volkova, Ludmila Volkova, Baylar Iolchiev, Tatyana Kuzmina   +5 more
doaj   +1 more source

Focal adhesion kinase is required for actin polymerization and remodeling of the cytoskeleton during sperm capacitation

Biology Open, 2016
Several focal adhesion proteins are known to cooperate with integrins to link the extracellular matrix to the actin cytoskeleton; as a result, many intracellular signaling pathways are activated and several focal adhesion complexes are formed.
Ana L. Roa-Espitia, Eva R. Hernández-Rendón, Rafael Baltiérrez-Hoyos, Rafaela J. Muñoz-Gotera, Antonieta Cote-Vélez, Irma Jiménez, Humberto González-Márquez, Enrique O. Hernández-González   +7 more
doaj   +1 more source

Red LED Light Irradiation Increases the Resistance Against Environmental Stress of Frozen Bovine Sperm Thawed in Suboptimal Conditions

Animals
This work sought to test the positive effect of red LED light on frozen bovine sperm resistance to thawing in suboptimal conditions. Moreover, a preliminary study explores whether this improvement could have any repercussions on in vivo fertilizing ...
Olga Blanco-Prieto, Carolina Maside, Andrea Gruzmacher, Manuel Ortiz, Marcelo Ratto, Francisco Javier Urra, Tomás Vera, Pablo Strobel, Jaime Catalán, Beatrice Mislei, Diego Bucci, Marc Yeste, Joan E. Rodríguez-Gil, Alfredo Ramírez-Reveco   +13 more
doaj   +1 more source

High throughput small RNA and transcriptome sequencing reveal capacitation-related microRNAs and mRNA in boar sperm

BMC Genomics, 2018
Background Capacitation, a prerequisite for oocyte fertilization, is a complex process involving series of structural and functional changes in sperms such as membrane modifications, modulation of enzyme activities, and protein phosphorylation.
Yuan Li, Rong-Hong Li, Ming-Xia Ran, Yan Zhang, Kai Liang, Ying-Nan Ren, Wen-Cheng He, Ming Zhang, Guang-Bin Zhou, Izhar Hyder Qazi, Chang-Jun Zeng   +10 more
doaj   +1 more source

Protein Kinase A (PRKA) Activity Is Regulated by the Proteasome at the Onset of Human Sperm Capacitation

Cells, 2021
The proteasome increases its activity at the onset of sperm capacitation due to the action of the SACY/PRKACA pathway; this increase is required for capacitation to progress. PRKA activity also increases and remains high during capacitation.
Héctor Zapata-Carmona, Lina Barón, Milene Kong, Patricio Morales   +3 more
doaj   +1 more source

Citrate Promotes Nitric Oxide Production during Human Sperm Capacitation

Antioxidants
Sperm capacitation is a complex process essential for the spermatozoon to recognize and fertilize the oocyte. For capacitation to occur, human spermatozoa require low levels of reactive oxygen species (ROS), increased protein tyrosine phosphorylation ...
Diego Loggia, Cristian O’Flaherty
doaj   +1 more source

Characterization of the Testis-Specific Angiotensin Converting Enzyme (tACE)-Interactome during Bovine Sperm Capacitation

Current Issues in Molecular Biology, 2022
A comprehensive understanding of molecular and biochemical changes during sperm capacitation is critical to the success of assisted reproductive technologies.
Mina Ojaghi, Jacob Varghese, John P. Kastelic, Jacob C. Thundathil   +3 more
doaj   +1 more source

Time to revise: impact of methodology on boar sperm capacitation in vitro via phosphotyrosine patterns

BMC Veterinary Research
Capacitation is a crucial sperm maturation process occurring in vivo in the female reproductive tract, enabling spermatozoa to fertilize the oocyte. In vitro, capacitation can be induced using defined capacitation media (CM), with further assessment of ...
Barbora Klusackova, Aneta Pilsova, Natalie Zelenkova, Zuzana Pilsova, Romana Krejcirova, Eva Chmelikova, Katerina Komrskova, Ondrej Simonik, Pavla Postlerova   +8 more
doaj   +1 more source

The Capacitated Orienteering Problem

Discrete Applied Mathematics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bock, Adrian, Sanità, Laura
openaire   +1 more source