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A study of the electrical polarization of Sepia officinalis yolk envelope, a role for Na(+)/K(+)-ATPases in osmoregulation?

TitreA study of the electrical polarization of Sepia officinalis yolk envelope, a role for Na(+)/K(+)-ATPases in osmoregulation?
Type de publicationJournal Article
Year of Publication2013
AuteursBonnaud-Ponticelli, L, Franko, D, Vouillot, L, Bouteau, F
JournalCommun Integr Biol
Volume6
Ticket6
Paginatione26035
Date Published2013 Nov 1
ISSN1942-0889
Résumé

The cuttlefish Sepia officinalis mate and spawn in the intertidal zone where eggs are exposed during low tide to osmotic stress. Embryonic outer yolk sac is a putative site for osmoregulation of young S. officinalis embryos. By using electrophysiological recordings and immunostaining we showed, (i) that the chorion is only a passive barrier for ions, since large molecules could not pass through it, (ii) that a complex transepithelial potential difference occurs through the yolk epithelium, (iii) that ionocyte-like cells and Na(+)/K(+)-ATPases were localized in the yolk epithelium and (iv) that ouabain sensitive Na(+)/K(+)-ATPase activity could participate to this yolk polarization. These data warrant further study on the role of ion transport systems of this epithelium in the osmoregulation processes in S. officinalis embryos.

DOI10.4161/cib.26035
Alternate JournalCommun Integr Biol
Identifiant (ID) PubMed24505501
PubMed Central IDPMC3913672