8-37h-CGRP antagonizes actions of amylin on carbohydrate metabolism in vitro and in vivo

Ming Wei Wang, Andrew A. Young, T. J. Rink, Garth Cooper

Research output: Contribution to journalArticlepeer-review

Abstract

8-37hCGRP is a potent antagonist at calcitonin gene-related peptide (CGRP) liver membrane receptors; it also blocks vasodilator actions of CGRP and the related peptide, amylin, in intact rats. We now report that 8-37hCGRP antagonizes amylin inhibition of insulin-stimulated labelled glucose uptake into isolated rat soleus muscle, and inhibits amylin-evoked elevation of plasma lactate and glucose in fasted anaesthetized rats. The different relative potencies of the 3 ligands (amylin, CGRP, 8-37hCGRP) on the liver receptor and on the soleus muscle point to distinct CGRP receptors in liver membranes and amylin receptors on muscle cells. © 1991.
Original languageEnglish
Pages (from-to)195-198
Number of pages3
JournalFEBS Letters
Volume291
Issue number2
DOIs
Publication statusPublished - 21 Oct 1991

Keywords

  • Amylin
  • Calcitonin gene-related peptide
  • Glucose
  • Lactate
  • Plasma calcium
  • Rat soleus muscle

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