alexa Proliferation of D2-40-expressing intestinal lymphatic vessels in the lamina propria in inflammatory bowel disease.


Journal of Clinical & Cellular Immunology

Author(s): Fogt F, Pascha TL, Zhang PJ, Gausas RE, Rahemtulla A,

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Abstract Lymphatic vessels in the colon are normally distributed beneath the muscularis mucosae with rare branches reaching through the muscularis mucosae to the most basal aspect of the colonic crypts. In chronic inflammatory bowel disease demonstrating acute inflammation and architectural disarray, lymph vessel proliferation is seen within the lamina propria and within the submucosa. We analyzed the number and distribution of lymphatic vessels within the lamina propria and submucosa in chronic active and treated ulcerative colitis with restoration of architecture by immunostaining with D2-40, a specific monoclonal antibody against lymphatic vessels. We found significantly increased numbers of lymph vessels in chronic active ulcerative colitis both within the lamina propria and the submucosa as compared to normal mucosa. Numbers of lymph vessels in lamina propria were highest in severe chronic active ulcerative colitis and less in moderate and minimal residual disease with minimal architectural disarray (p<0.05). Lymph vessels in the submucosa were increased significantly above normal values in both severe, moderate and minimal residual disease. We conclude that lymph vessel distribution in chronic active ulcerative colitis extends into the lamina propria. With restoration of architectural morphology, the integrity of the lamina propria in regards to the distribution of lymph vessels is restored.
This article was published in Int J Mol Med and referenced in Journal of Clinical & Cellular Immunology

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