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Vasoactive intestinal peptide and renin secretion.

J P Porter1, W F Ganong

  • 1Department of Physiology, University of Louisville, Kentucky 40292.

Annals of the New York Academy of Sciences
|January 1, 1988
PubMed
Summary

Vasoactive intestinal peptide (VIP) directly stimulates renin release from kidney cells. However, VIP does not appear to act as a neurotransmitter or humoral factor in conditions like hemorrhage.

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Area of Science:

  • Neuropeptide signaling
  • Renal physiology

Background:

  • Vasoactive intestinal peptide (VIP) is known to increase renin release in various species.
  • The kidney's renin-secreting juxtaglomerular cells are potential targets for VIP action.

Purpose of the Study:

  • To investigate the mechanism by which VIP influences renin release.
  • To determine if VIP acts as a neurotransmitter or humoral factor in regulating renin secretion.

Main Methods:

  • Investigated VIP's direct action on juxtaglomerular cells.
  • Examined circulating VIP levels during hemorrhage and sodium restriction.
  • Considered VIP's role in endotoxic shock.

Main Results:

  • VIP directly stimulates renin release from juxtaglomerular cells.
  • Circulating VIP levels did not increase with renin release during hemorrhage or sodium restriction.
  • VIP may play a role in renin regulation during endotoxic shock.

Conclusions:

  • VIP directly acts on kidney cells to increase renin release.
  • VIP does not appear to function as a neurotransmitter or humorally in all situations affecting renin secretion.
  • Further research with VIP antagonists is needed to clarify VIP's role in specific physiological and pathological conditions.

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