Relationship between mast cells and the colitis with relapse induced by trinitrobenzesulphonic acid in Wistar rats.
Mediators Inflamm 2009;
2009:432493. [PMID:
19436763 PMCID:
PMC2680139 DOI:
10.1155/2009/432493]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 01/15/2009] [Accepted: 03/17/2009] [Indexed: 01/29/2023] Open
Abstract
The present study aimed to clarify the role of mast cells in colitis with
relapse induced in Wistar rats by trinitrobenzenosulphonic
acid. Colitis induction increased the histamine concentration
in the colon, which peaked on day 26. The number of mast cells,
probably immature, was ten times higher on day 8. Different from
animals infected with intestinal parasites, after colitis remission,
mast cells do not migrate to the spleen, showing that mast cell
proliferation presents different characteristics depending on the
inflammation stimuli. Treatment with sulfasalazine, doxantrazole,
quercetin, or nedocromil did not increase the histamine concentration
or the mast cell number in the colon on day 26, thereby showing
absence of degranulation of these cells. In conclusion, although mast
cell proliferation is associated with colitis, these cells and their
mediators appear to play no clear role in the colitis with
relapses.
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