Detection of ICAM-1 in experimentally induced colitis of ICAM-1-deficient and wild-type mice: an immunohistochemical study.
Adhesion molecules (e.g. ICAM-1, CD 54) are known to be upregulated on activated vascular endothelial cells during inflammatory reactions. To study the role of ICAM-1 in intestinal inflammation in vivo, we induced acute experimental colitis in wild-type (C57BL/6) mice and ICAM-1-deficient mice, by feeding the animals with 3% dextran sodium sulphate (DSS) in drinking water for 7 days. In the control strain the immunohistochemical staining showed a very pronounced endothelial upregulation of ICAM-1 after the DSS treatment observed in areas of inflammatory infiltrate, especially in venules or arterioles of the propria and submucosa, and partly in the mesocolon. DSS-fed ICAM-1-deficient mice showed no endothelial enhancement and only faint staining of venules or capillaries approaching that encountered in the control ICAM-1-deficient animals. Our data indicate that ICAM-1 may play a crucial role in the development of acute intestinal inflammation, consistent with our finding that ICAM-1 deficiency can obviate severe forms of experimentally induced colitis in mice.
Bendjelloul
F
F
Division of Immunology and Gnotobiology, Institute of Microbiology, ASCR, Prague, Czech Republic.
Rossmann
P
P
Malý
P
P
Mandys
V
V
Jirkovská
M
M
Prokesová
L
L
Tucková
L
L
Tlaskalová-Hogenová
H
H
D000818:Animals; D003092:Colitis / Q000139:chemically induced / Q000276:immunology / Q000378:metabolism*; D003106:Colon / Q000737:chemistry; D016264:Dextran Sulfate; D004730:Endothelium, Vascular / Q000378:metabolism; D005260:Female; D007150:Immunohistochemistry; D007249:Inflammation / Q000378:metabolism / Q000473:pathology; D018799:Intercellular Adhesion Molecule-1 / Q000032:analysis / Q000187:drug effects / Q000502:physiology*; D051379:Mice; D008810:Mice, Inbred C57BL; D008817:Mice, Mutant Strains; D015854:Up-Regulation
D018799:Intercellular Adhesion Molecule-1; D016264:Dextran Sulfate