Published in:
01-02-2017 | Original Article
Cell adhesion molecules are altered during irinotecan-induced mucositis: a qualitative histopathological study
Authors:
Noor Al-Dasooqi, Joanne Bowen, Colin Bennett, John Finnie, Dorothy Keefe, Rachel Gibson
Published in:
Supportive Care in Cancer
|
Issue 2/2017
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Abstract
Purpose
Chemotherapy-induced mucositis is characterised by damage to mucous membranes throughout the alimentary tract. This study aims to investigate the expression of cell adhesion molecules (CAMs) following treatment with irinotecan.
Methods
Dark agouti rats received a single dose of 175 mg/kg irinotecan and sacrificed at various time points after treatment. Picro-sirius red staining indicated an increase in collagen around crypts from 24 h in both small and large intestinal regions and this diminished at the later time points. CAMs E-cadherin, P-selectin, E-selectin and integrin-α1 were examined using immunohistochemistry.
Results
E-cadherin was significantly elevated in jejunal crypts at the time of maximal tissue damage (48 h), while it decreased at the healing phase (96 h) in both jejunum and colon. P-selectin expression decreased significantly in the jejunum following irinotecan. Crypt expression of E-selectin was significantly elevated in the healing phase of mucositis (96 h). Integrin-α1 expression was significantly altered during the time course in the villus (p = 0.0032) and lamina propria (p = 0.039).
Conclusions
Irinotecan induced a significant alteration in CAM expression in the jejunum and colon. Changes in adhesion molecule expression may have a direct impact on the loss of mucosal layer integrity seen in mucositis.