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Vasoactive Intestinal Polypeptide Regulation of Rabbit Renal Adenylate Cyclase Activity in Vitro

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Journal J Physiol
Specialty Physiology
Date 1987 Jun 1
PMID 3656172
Citations 5
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Abstract

1. The effect of vasoactive intestinal polypeptide (VIP) upon adenylate cyclase activity was determined in purified cortical basolateral membranes and in glomeruli and tubular elements obtained from rabbit kidney. 2. In purified basolateral membranes prepared from cortex, 1 microM-VIP consistently stimulated adenylate cyclase activity above basal levels (1.55 +/- 0.09-fold (mean +/- S.E. of mean), n = 10 animals). Half-maximal stimulation was observed at 17 +/- 11 nM-VIP (S.D., n = 9). 3. Related peptides, e.g. secretin, glucagon, gastric inhibitory peptide, human pancreatic growth hormone releasing factor, and peptide having N-terminal histidine and C-terminal isoleucine amide (PHI), were without effect or gave lower stimulations of adenylate cyclase activity when tested at 1 microM. 4. Significant VIP degradation was observed under the assay conditions used but this did not substantially alter the response or selectivity to VIP. 5. In separate preparations of isolated glomeruli and proximal tubules addition of 1 microM-VIP resulted in a 3.3 +/- 1.1-fold (S.D., n = 3) and 2.2 +/- 1.0-fold (S.D., n = 3) stimulation (respectively) of adenylate cyclase activity. 6. In isolated medullary tubule suspensions, isolated by collagenase-hyaluronidase digestion of outer (red) medulla, and in thick ascending-limb-enriched preparations prepared by Percoll density gradient fractionation, 1 microM-VIP significantly increased adenylate cyclase activity by 2.4 +/- 0.6-fold (S.D., n = 3) and 2.1 +/- 0.7-fold (S.D., n = 3) respectively. 7. A possible role for VIP in the regulation of renal function in the rabbit is discussed in relation to the occurrence of VIP stimulation of adenylate cyclase activity in several renal cellular elements.

Citing Articles

Distribution of vasoactive intestinal peptide-sensitive adenylate cyclase activity along the rabbit nephron.

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Similarities between the relaxations induced by vasoactive intestinal peptide and by stimulation of the non-adrenergic non-cholinergic neurons in the rat stomach.

Kamata K, Sakamoto A, Kasuya Y Naunyn Schmiedebergs Arch Pharmacol. 1988; 338(4):401-6.

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Vasoactive intestinal peptide stimulation of renal adenylate cyclase and antagonism by (4Cl-D-Phe6Leu17)VIP.

Griffiths N, Simmons N, Rivier J Pflugers Arch. 1989; 414(2):222-7.

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Vasoactive intestinal peptide stimulation of human renal adenylate cyclase in vitro.

Charlton B, Neal D, Simmons N J Physiol. 1990; 423:475-84.

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Localisation and characterisation of functional vasoactive intestinal peptide receptors in feline kidney.

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