Abstract

GUZMAN, Luis; PEREZ, Susan  and  VALDIVIA, Martha. Induction of the acrosomal reaction in mouse spermatozoa by the solution of pellucid zone from alpaca (Lama pacos L.). Rev. peru biol. [online]. 2007, vol.13, n.3, pp.227-230. ISSN 1727-9933.

Acrosin is one of the principal components in the acrosome, has trypsin-like activity and is secreted after the Acrosome Reaction (RA). The aim of this study was to study the induction of the acrosomal reaction in mouse sperms with homologous- Pellucid Zone and heterologous- Pellucid Zone. Mouse sperms were capacitated by two hours in IVF medium, supplemented with albumin, heparin and synthetic serum to 37 °C and 5% CO₂, and before they were incubated in absence of ZP and in present of solubilized ZP from mouse (0,78 mg/ml) and alpaca (0,78 mg/ml y 2,35 mg/ml). The RA was evaluated through immunocytochemistry with monoclonal antibodies anti-human acrosin C5F10 within intervals of 1 hour during four hours. The results show a significant increase (p<0,05) in acrosome reaction induced with homologous-ZP and heterologous-ZP.

Keywords : sperm capacitation; acrosome reaction; pellucid zone.

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