The present paper reviews in detail ultrastructural and molecular studies addressed to characterize different phenotypes of sperm pathology in sterile men. In each case ultrastructural, immunocytochemical, molecular and ...

The aim of this study was to elucidate the mechanism involved in the acrosome reaction (AR) induced by follicular fluid (FF) in spermatozoa previously exposed to peritoneal fluid (PF). The influence of progesterone ...

The aim of this work was to determine the enzymatic activity of phosphofructokinase (PFK), malate dehydrogenase (MDH) and isocitrate dehydrogenase (IDH) in boar spermatozoa and study their participation in bicarbonate-induced ...

Objectives: Evaluate the effect of the packaging method in porcine semen cryopreserved with α-tocopherol on quality and functional sperm parameters. In porcine production, although the use of frozen semen is very limited, ...

The cryopreservation of sheep semen represents a challenge to increase pregnancy rates in cervical artificial insemination programs. Decreased sensitivity at low temperatures could counteract certain detrimental effects ...

Our objective was to determine the effect of vitrification using both cryoloop and sphere methods, combined with two warming protocols, on the percentage of motility, membrane integrity and DNA fragmentation/condensation ...

Mammalian spermatozoa must undergo complex physiological and morphological alterations within the female reproductive tract before they become fertilization competent. Two important alterations are capacitation and the ...

The success of assisted reproduction techniques depends inpart on sperm quality, which influences not only fertilization butalso embryo development and implantation. In our laboratory, wedesigned the Sperm Selection Assay ...