RT Journal Article
SR Electronic
T1 The Role of CNS Glucagon-Like Peptide-1 (7-36) Amide Receptors in Mediating the Visceral Illness Effects of Lithium Chloride
JF The Journal of Neuroscience
JO J. Neurosci.
FD Society for Neuroscience
SP 1616
OP 1621
DO 10.1523/JNEUROSCI.20-04-01616.2000
VO 20
IS 4
A1 Randy J. Seeley
A1 Kathleen Blake
A1 Paul A. Rushing
A1 Stephen Benoit
A1 John Eng
A1 Stephen C. Woods
A1 David D'Alessio
YR 2000
UL http://www.jneurosci.org/content/20/4/1616.abstract
AB Peripheral administration of large doses of lithium chloride (LiCl) to rats causes a spectrum of effects that are consistent with visceral illness. LiCl reduces food intake, decreases salt ingestion after sodium depletion, induces pica, and produces robust conditioned taste aversions. Because some of the effects of peripheral LiCl are mimicked by centrally administered glucagon-like peptide-1 (7-36) amide (GLP-1), we hypothesized that this peptide is involved in the neural pathways by which LiCl causes visceral illness. To test this hypothesis, we pretreated rats with a selective and potent GLP-1 receptor antagonist given directly into the third ventricle via an indwelling cannula before administration of peripheral LiCl. The GLP-1 receptor antagonist completely blocked the effect of LiCl to reduce food intake, induce pica, and produce a conditioned taste aversion. The same dose of GLP-1 receptor antagonist did not reverse the LiCl-induced reduction in NaCl intake. The data indicate a role for GLP-1 receptors in the CNS pathway that mediates some of the effects of visceral illness.