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Vol. 10, No. 4, 2002/2003
Issue release date: February 2003
Section title: Original Paper
Neuroimmunomodulation 2002–03;10:208–216
(DOI:10.1159/000068323)

Anti-Inflammatory Effects of α-Melanocyte-Stimulating Hormone in Celiac Intestinal Mucosa

Colombo G. · Buffa R. · Bardella M.T. · Garofalo L. · Carlin A. · Lipton J.M. · Catania A.
Departments of aInternal Medicine and bGastroenterology, Ospedale Maggiore di Milano IRCCS, Milan, cDivision of Pathology, Università di Milano Bicocca, Monza, Italy; dZengen Inc., WoodlandHills,Calif.,USA

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 3/6/2002
Accepted: 6/3/2002
Published online: 2/19/2003

Number of Print Pages: 9
Number of Figures: 6
Number of Tables: 0

ISSN: 1021-7401 (Print)
eISSN: 1423-0216 (Online)

For additional information: http://www.karger.com/NIM

Abstract

Objectives: The peptide α-melanocyte-stimulating hormone (α-MSH) possesses potent anti-inflammatory activities and has been previously implicated in the endogenous control of inflammatory reactions. The aim of the present research was to determine whether α-MSH and its receptors participate in a localized anti-inflammatory response in the duodenal mucosa of celiac patients. Methods: Three series of experiments were performed, using duodenal biopsy pairs from 53 adult celiac patients and 14 normal subjects, in order to determine: (1) mucosal immunoreactivity for α-MSH and melanocortin receptors (MCRs), and gene expression of α-MSH precursor pro-opiomelanocortin and MCRs; (2) α-MSH and inflammatory cytokine production by duodenal specimens in vitro, and the influence of synthetic α-MSH on such cytokine production, and (3) the influence of stimulation with gliadin (the subfraction of gluten that is toxic to patients with celiac disease) on α-MSH and cytokine production in vitro and the effect of α-MSH on gliadin-stimulated cytokine production. Results: Elements of a localized anti-inflammatory influence based on α-MSH and its receptors were found: duodenal mucosa showed immunostaining for α-MSH and two of its receptor subtypes, MC1R and MC5R. α-MSH and MC1R immunoreactivity was more intense in specimens from celiac patients. Release of interleukin 6 from gliadin-stimulated duodenal mucosa was inhibited by synthetic α-MSH in vitro. Conclusions: Presence of α-MSH and its receptors in celiac mucosa suggests the presence of a local reaction to control the inflammatory response elicited by gliadin. In selected cases of refractory celiac disease, treatment with exogenous peptides might be considered.


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 3/6/2002
Accepted: 6/3/2002
Published online: 2/19/2003

Number of Print Pages: 9
Number of Figures: 6
Number of Tables: 0

ISSN: 1021-7401 (Print)
eISSN: 1423-0216 (Online)

For additional information: http://www.karger.com/NIM


Copyright / Drug Dosage

Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher or, in the case of photocopying, direct payment of a specified fee to the Copyright Clearance Center.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

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