Characterization of the endogenous intestinal peptide that stimulates the rectal gland of Scyliorhinus canicula

W. G. Anderson, J. M. Conlon, N. Hazon

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

It has been postulated that gut peptides play a major role in the regulation of rectal gland secretion in elasmobranchs. An isolated perfused rectal gland preparation was developed for Scyliorhinus canicula that responded to dibutyryl 3',5'-cyclic monophosphate plus 3-isobutyl-1- methylxanthine, increasing chloride clearance rates threefold over basal levels. Activity was stimulated by an endogenous peptide, isolated in pure form by reverse-phase high-performance liquid chromatography from the intestine of S. canicula. The primary structure was established as Ser-Pro- Ser-Asn-Ser-Lys-Cys-Pro-Asp-Gly-Pro-Asp-Cys-Phe-Val-Gly-Leu-Met-NH2. This is a sequence identical to that of the tachykinin scyliorhinin II. Perfusion of synthetic scyliorhinin II increased secretion rate in the rectal gland of S. canicula in a dose-dependent manner with a maximal response at 10-6 M, whereas vasoactive intestinal peptide, a stimulator in the spiny dogfish, Squalus acanthias, had no effect. We propose that scyliorhinin II is the uncharacterized peptide rectin, previously identified from the intestine of S. canicula.

Original languageEnglish
Pages (from-to)R1359-R1364
JournalAmerican Journal of Physiology - Regulatory Integrative and Comparative Physiology
Volume268
Issue number6 37-6
DOIs
Publication statusPublished - 1995
Externally publishedYes

Keywords

  • rectin
  • scyliorhinin II
  • tachykinin
  • vasoactive intestinal peptide

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

Fingerprint

Dive into the research topics of 'Characterization of the endogenous intestinal peptide that stimulates the rectal gland of Scyliorhinus canicula'. Together they form a unique fingerprint.

Cite this