Results 31 to 40 of about 33,341 (304)

RESEARCH CONCERNING THE INFLUENCE OF CAPACITATION CONDITIONS ON THE QUALITY OF SPERMATOZOA USED FOR IN VITRO FERTILIZATION

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The optimization of capacitation technique is based on the study of the influence factors of this process. Studying the influence of capacitation conditions on boar sperm quality we concentrated our research upon capacitation technique and method.
M. ZĂHAN   +4 more
doaj  

Seminal CD38 Enhances Human Sperm Capacitation through Its Interaction with CD31. [PDF]

open access: yesPLoS ONE, 2015
Human sperm have to undergo a maturational process called capacitation in the female reproductive tract. Capacitation confers upon the sperm an ability to gain hypermotility and undergo acrosome reaction.
Byung-Ju Kim   +4 more
doaj   +1 more source

Europe cosmopolitical or populist: justice and soft power in perspective [PDF]

open access: yes, 2016
Europa afronta hoy un dilema: ser cosmopolita o dejar de serlo. El peligro de desintegración de la Unión Europea anunciado por los resultados del reciente brexit y por el auge de los populismos de derecha en toda Europa reclama un ejercicio de soft power
Cebolla-Sanahuja, Lorena
core   +3 more sources

The Modulation of Functional Status of Bovine Spermatozoa by Progesterone

open access: yesAnimals, 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   +5 more
doaj   +1 more source

Effect of estrogens on boar sperm capacitation in vitro

open access: yesReproductive 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   +4 more
doaj   +1 more source

Specific lectin binding sites during in vitro capacitation and acrosome reaction in boar spermatozoa

open access: yesItalian Journal of Animal Science, 2021
Sperm glycocalyx and plasma membrane undergo outstanding modifications during fertilization. However, it is unclear how in vitro capacitation time and acrosome reaction affect the specific location of boar sperm glycoconjugates.
Laura Robles-Gómez   +6 more
doaj   +1 more source

Protein-carbohydrate interactions during fertilization [PDF]

open access: yes, 1998
Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the zona pellucida (ZP) and carbohydrate binding proteins of the sperm surface. This review focuses on the protein-carbohydrate interactions during
Kolle, S., Plendl, J., Sinowatz, Fred
core   +1 more source

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

open access: yesBiology 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   +7 more
doaj   +1 more source

Structural prediction and in silico physicochemical characterization for mouse caltrin I and bovine caltrin proteins [PDF]

open access: yes, 2016
It is known that caltrin (calcium transport inhibitor) protein binds to sperm cells during ejaculation and inhibits extracellular Ca2+ uptake. Although the sequence and some biological features of mouse caltrin I and bovine caltrin are known, their ...
Coronel, Carlos Enrique   +2 more
core   +2 more sources

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

open access: yesCells, 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   +3 more
doaj   +1 more source

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