Effect of VIP on sugar transport in rabbit small intestine in vitro

Zentralblatt für Veterinärmedizin. Reihe A
M P ArrueboA I Alcalde

Abstract

The vasoactive intestinal peptide (VIP) has shown to be widely distributed in the gastrointestinal mucosa, submucosa and nerves, and the existence of VIP receptors on the basolateral membrane of enterocytes has been recently reported for many species. The interaction of VIP with its receptors seemed to increase cyclic AMP level, and this nucleotide has been shown to be responsible for the intestinal secretion produced by VIP. The present study confirms that VIP inhibits the intestinal absorption of D-galactose. This effect seems to be due to the inhibition of the Na(+)-independent basolateral intestinal sugar transport system. RMI 12330A, described as adenylate cyclase inhibitors, blocked the VIP action. These findings suggest that cyclic AMP might be responsible for the inhibition of Na(+)-independent transport of D-galactose across the basolateral membrane. Moreover, results obtained to determine the possible role of calcium in the action of VIP suggest that Ca2+ play a part, directly or indirectly, in the inhibition of the D-galactose transport across the basolateral membrane produced by VIP.

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Citations

Sep 10, 2003·Autonomic Neuroscience : Basic & Clinical·Elizabeth L BorgesAndy Petroianu
Aug 2, 1993·European Journal of Pharmacology·V SorribasA I Alcalde
Jun 1, 1992·Journal of Veterinary Pharmacology and Therapeutics·H NavarroA I Alcalde
Jan 1, 1996·Life Sciences·M T SalvadorM J Rodríguez-Yoldi

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