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dc.contributor.author
Gramajo Bühler, María Cecilia  
dc.contributor.author
Zelarayán, Liliana Isabel  
dc.contributor.author
Seisdedos de Sánchez Toranzo, Graciela del Valle  
dc.date.available
2018-07-06T15:53:17Z  
dc.date.issued
2016-02  
dc.identifier.citation
Gramajo Bühler, María Cecilia; Zelarayán, Liliana Isabel; Seisdedos de Sánchez Toranzo, Graciela del Valle; Involvement of Protein cAMP-dependent Kinase, Phospholipase A2 and Phospholipase C in Sperm Acrosome Reaction of Chinchilla lanigera; Wiley Blackwell Publishing, Inc; Reproduction in Domestic Animals; 51; 1; 2-2016; 150-157  
dc.identifier.issn
0936-6768  
dc.identifier.uri
http://hdl.handle.net/11336/51500  
dc.description.abstract
Contents: The mechanisms involved in fertilization are the centre of attention in order to determine the conditions required to reproduce in vitro the events that take place in vivo, with special interest in endangered species. Previous data from mouse sperm, where acrosome reaction (AR) occurs more often in the interstitium of the cumulus oophorus, contribute to strengthen the use of progesterone as a physiological inducer of this process. We studied the participation of protein kinase A (PKA), phospholipases A2 and C (PLA2, PLC) in the AR induced by progesterone from Chinchilla epididymal spermatozoa. The addition of db-cAMP to the incubation medium caused an increase of 58% in the AR, while the use of H89 (30 μm), a PKA inhibitor, reflected a decrease of 40% in the percentage of reacted gametes. The assays conducted with arachidonic acid showed a maximum increase of 23% in the AR. When gametes were pre-incubated with PLA2 inhibitors, a dose-dependent inhibitory effect was observed. The addition of phorbol12-myristate13-acetate (10 μm) revealed higher percentages of AR induction (60%). When PLC was inhibited with neomycin and U73122, a dose-dependent decrease in AR percentages was observed. Combined inhibition of PKA, PLA2 and PLC, AR values similar to control were obtained. This work shows evidence, for the first time in Chinchilla, that progesterone activates the AC/cAMP/PKA system as well as sperm phospholipases and that these signalling pathways participate jointly and cooperatively in AR. These results contribute to the understanding of the complex regulation that is triggered in sperm after the effect of progesterone.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Sperm  
dc.subject
Pla2  
dc.subject
Acrosomal Reaction  
dc.subject
Chinchilla Sp.  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Involvement of Protein cAMP-dependent Kinase, Phospholipase A2 and Phospholipase C in Sperm Acrosome Reaction of Chinchilla lanigera  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-06-28T13:57:15Z  
dc.journal.volume
51  
dc.journal.number
1  
dc.journal.pagination
150-157  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Gramajo Bühler, María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina  
dc.description.fil
Fil: Zelarayán, Liliana Isabel. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; Argentina  
dc.description.fil
Fil: Seisdedos de Sánchez Toranzo, Graciela del Valle. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; Argentina  
dc.journal.title
Reproduction in Domestic Animals  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1111/rda.12659  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/rda.12659