Referenced in: none

Automatically associated channels: TRP , TRPA , TRPA1

Title: The TRPA1 agonist, methyl syringate suppresses food intake and gastric emptying.

Authors: Min Jung Kim, Hee Jin Son, Seo Hyeon Song, Myungji Jung, Yiseul Kim, Mee-Ra Rhyu

Journal, date & volume: PLoS ONE, 2013 , 8, e71603

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/23990963

Abstract
Transient receptor potential channel ankryn 1 (TRPA1) expressed in the gastrointestinal tract is associated with gastric motility, gastric emptying, and food intake. In this study, we investigated the effects of methyl syringate, a specific and selective TRPA1 agonist, on food intake, gastric emptying, and gut hormone levels in imprinting control region (ICR) mice. The administration of methyl syringate suppressed cumulative food intake and gastric emptying. In addition, treatment with ruthenium red (RR), a general cation channel blocker, and HC-030031, a selective TRPA1 antagonist, inhibited methyl syringate-induced reduction of food intake and delayed gastric emptying in ICR mice. Methyl syringate also increased plasma peptide YY (PYY) levels, but not glucagon-like peptide-1 (GLP-1) levels. The elevation in PYY was blocked by treatment with RR and HC-030031. The present findings indicate that methyl syringate regulates food intake and gastric emptying through a TRPA1-mediated pathway and, by extension, can contribute to weight suppression.