Posted Thu, Sep, 05,2013
Published today in International Journal of Tryptophan Research is a new concise review by Michal P. Turski, Monika Turska, Piotr Paluszkiewicz, Jolanta Parada-Turska and Gregory F. Oxenkrug. Read more about this paper below:
Title
Kynurenic Acid in the Digestive System—New Facts, New Challenges
Abstract
This review provides information on the most recent findings concerning presence, origin, and role of kynurenic acid (KYNA), a tryptophan metabolite, in the digestive system. KYNA is an antagonist of both the ionotropic glutamate receptors and the alpha7 nicotinic acetylcholine receptor, as well as an agonist of G-protein coupled GPR35 receptor. Since the GPR35 receptor is mainly present in the gastrointestinal tract, researchers have concentrated on the digestive system in recent years. They have found that KYNA content increases gradually and significantly along the gastrointestinal tract. Interestingly, the concentration of KYNA in the lumen is much higher than in the wall of intestine. It has been documented that KYNA may have a positive influence on the number of pathologies in the gastrointestinal tract, in particular ulcers, colon obstruction, or colitis. Future studies might determine whether it is advisable to supplement KYNA to a human organism.
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