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Author Sapna, S. ♦ Shivakumar, K.
Source Sree Chitra Tirunal Institute for Medical Sciences & Technology
Content type Text
Publisher Cell Biology International
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Pharmacology and therapeutics
Subject Domain (in MeSH) Investigative Techniques ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment
Subject Keyword Experimental Medicine
Abstract Substance P, a pro-inflammatory neuropeptide, is released from cardiac peptidergic nerves under conditions like ischemia but whether it modulates inflammatory processes in the heart remains unexplored. This study demonstrates for the first time that substance P augments the production of the soluble form of intercellular adhesion molecule-1, sICAM-1, by adult rat cardiac fibroblasts. However, RT-PCR showed no concomitant increase in ICAM-I transcript levels, suggesting that the increase in sICAM-1 may involve post-transcriptional/transiational mechanisms. Use of pharmacological inhibitors revealed that the stimulatory effect of substance P on sICAM-1 production is mediated by p42/44 MAPK and protein kinase C. Preliminary experiments also showed that the neuropeptide stimulates the production of prostaglandin E-2 by cardiac fibroblasts. The findings support the postulation that substance P may modulate multiple inflammatory responses within the myocardium through release of pro-inflammatory mediators from resident fibroblasts. (c) 2007 International Federation for Cell Biology. Published by Elsevier Ltd. All rights reserved.
Education Level UG and PG
Learning Resource Type Article
Educational Framework Medical Council of India (MCI)
Volume Number 31
Issue Number 8
Page Count 4
Starting Page 856
Ending Page 859