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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Adhesion molecules in intestinal Schistosoma mansoni infection.

Adhesion molecules constitute essential elements in inflammation, mediating various cellular interactions. We investigated the expression of adhesion molecules mediating cell-cell [intercellular adhesion molecule-1 (ICAM-1) and lymphocyte function-associated antigen-1 (LFA-1)] and cell-matrix interactions [very late antigen-4 (VLA-4), VLA-6, and syndecan-1] in intestinal granulomas of mice infected with the parasite Schistosoma mansoni. Up-regulation of ICAM-1, LFA-1, and VLA-4 was seen in ileal and colonic granulomas, at both the acute (8 weeks postinfection) and the chronic stage (13-16 weeks postinfection). Up-regulation of VLA-6 was absent in all intestinal granulomas. Syndecan-1 immunoreactive (antigen-driven) B-lymphocytes were seen in the proximity of egg-antigen-laden macrophages in the inner part of ileal and colonic granulomas, although B-cells are considered to be absent in ileal granulomas. Estimation of intestinal granuloma volumes demonstrated the lack of down-modulation observed in ileal granulomas. From our results we infer that adhesion molecules constitute important elements in schistosomal intestinal granuloma formation. Organ-related differences between hepatic and intestinal granulomas exist (e.g., granuloma volume), but these differences are not morphologically reflected in a differential expression of the adhesion molecules ICAM-1, LFA-1, and VLA-4. Syndecan-1 immunoreactive B-lymphocytes also appear to be involved in ileal granuloma formation.[1]

References

  1. Adhesion molecules in intestinal Schistosoma mansoni infection. Jacobs, W., Bogers, J.J., Timmermans, J.P., Deelder, A.M., Van Marck, E.A. Parasitol. Res. (1998) [Pubmed]
 
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