Atrial natriuretic peptide, bradykinin, and angiotensin II-like immunoreactivity in the Harderian gland of the terrapin Pseudemys scripta: Response to osmotic stress

Maria Angela Masini, Gabriella Chieffi Baccari, Loredana Di Matteo, Sergio Minucci, Giovanni Chieffi, Biancamaria Uva

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The Harderian gland of the terrapin Pseudemys scripta has four types of acinar cells. Type IV cells are very similar to the salt secreting cells of the salt secretory glands of various marine vertebrates. The presence and localization of the Ile5-Angiotensin II, Atrial Natriuretic Peptide, and Bradykinin has been investigated by immunohistochemical methods. Immunoreactivity is confined to the type IV cells. Changes in the environmental salinity resulted in different patterns in the immunoreactivity especially after incubation with Ab-Angiotensin II and Ab-Atrial Natriuretic Peptide. Immunoreactive Angiotensin II cells are more numerous in animals maintained in distilled water, when reabsorption of sodium is needed. In contrast, immunoreactive Angiotensin II cells are very few in animals maintained in seawater. On the contrary, the number of immunoreactive cells for Atrial Natriuretic Peptide is high in seawater maintained animals, and weaker in animals in distilled water. The type IV cell may be considered a candidate for ion regulation in the terrapin Harderian gland.

Lingua originaleInglese
pagine (da-a)425-431
Numero di pagine7
RivistaJournal of Experimental Zoology
Volume276
Numero di pubblicazione6
DOI
Stato di pubblicazionePubblicato - 15 dic 1996
Pubblicato esternamente

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