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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Atrial natriuretic factor enhances induced salivary secretion in the rat.

As atrial natriuretic factor ( ANF) is intimately involved in water and electrolyte homeostasis, dose-response studies were performed in the parotid as well as submaxillary glands of the rat with increasing doses of the atrial peptide to investigate its possible role as a sialogogic agent. Dose-response studies were also performed in both salivary glands with different pharmacological agonists known to cause salivation in the rat (methacholine, noradrenaline, isoproterenol, methoxamine and substance P) in the absence and in the presence of ANF. The atrial factor did not induce salivation 'per se' at least in the investigated doses. However, it enhanced the salivary response to methacholine, methoxamine and substance P but it did not modify the salivation induced either by noradrenaline or isoproterenol. The present results showed that ANF enhanced the salivation induced by pharmacological agents which stimulate phosphatidylinositol hydrolysis. These effects of ANF may be probably related to the activation of the non-guanylate cyclase coupled receptor which has been associated with phosphatidylinositol turnover. Nevertheless, although the atrial factor induces vasorelaxation, its enhancement of blood flow may not be the major event underlying the present results. The present work suggests a potential physiological role of ANF on the modulation of salivary secretion and provides further evidence on the rol of ANF in the regulation of body fluid homeostasis.[1]


  1. Atrial natriuretic factor enhances induced salivary secretion in the rat. Bianciotti, L.G., Elverdin, J.C., Vatta, M.S., Colatrella, C., Fernández, B.E. Regul. Pept. (1994) [Pubmed]
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