c) Efecto del medio de conservacion (ZP S:S vs ZP VIT): No hubo diferencias significativas en el estado
acrosomal de los espermatozoides, al cabo de 1 hora y 3 horas de incubacion, entre los dos grupos de estudio.
(17) The in vitro administration of LC diminishes
acrosomal reaction, (18) and thus increases the number of intact sperms, which chimes in with our results.
Store-operated calcium channels trigger exocytosis of the sea urchin sperm
acrosomal vesicle.
While six of the seven lectins failed to label the plasma membrane of sperm with intact acrosomes, all lectins intensely labeled the inner
acrosomal membrane once it became exposed and accessible to the lectin.
La evaluacion de la viabilidad e integridad
acrosomal mediante citometria de flujo ha sido reportada en alpacas (Cheuqueman et al., 2013) y llamas (Carretero et al., 2015), utilizando FITC-PSA/PI y FITC-PNA/PI, respectivamente.
Finally, significant differences were observed when both conditions were compared regarding the percentage of sperm cells exhibiting
acrosomal, specifically in the testicular, caudal and medial regions.
However, progesterone could induce sperm chemotaxis towards oocyte and
acrosomal reaction (16).
La modificacion de la composicion de la grasa consumida en la dieta de los verracos mediante una suplementacion con harina de extraccion de linaza redujo el porcentaje de gotas proximales en el espermatozoide, especialmente en los verracos portadores del gen halotano, y mostro una tendencia para reducir la resistencia de la membrana
acrosomal (Ort) y mejorar la integridad y funcionalidad de la membrana del espermatozoide (Host), aunque no afecto a la fragmentacion del ADN espermatico.
Estos autores confirmaron lo anterior con la adicion de catalasa al inicio del proceso de capacitacion y reportaron la disminucion de hiperactivacion e induccion de la reaccion
acrosomal normal.
It is intriguing to speculate that
acrosomal leptin receptor expression is associated with cholesterol efflux and acrosome reaction, whereas tail leptin receptor expression in human sperm may reflect leptin's modulation of hyperactivated sperm motility.
Acrosomal integrity is one of the major parameter to analyze the functional status of membrane (Silva and Gadella, 2006).
The sperm
acrosomal matrix contains a novel member of the pentaxin family of calcium-dependent binding proteins.
