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Dysfunctional LAD-1 neutrophils and colitis.

Authors
  • Uzel, G
  • Kleiner, D E
  • Kuhns, D B
  • Holland, S M
Type
Published Article
Journal
Gastroenterology
Publisher
Elsevier
Publication Date
Oct 01, 2001
Volume
121
Issue
4
Pages
958–964
Identifiers
PMID: 11606509
Source
Medline
License
Unknown

Abstract

Leukocyte adhesion deficiency 1 (LAD-1) is characterized by absent or dysfunctional beta2 integrin (CD18), leading to defective chemotaxis, adherence, phagocytosis, and bacterial killing. Colitis, except for rare intestinal necrotizing events, is not a well-recognized feature of this immunodeficiency. A case of nonspecific colitis clinically resembling Crohn's disease in a patient with the severe form of LAD-1 (0.5% < CD18) has been previously reported. We describe an adult patient with the moderate form of LAD-1 and chronic colitis characterized by extensive inflammation and ulceration of the right colon and terminal ileum, leading to adhesions and strictures. The chronic colitis described in this article associated with the dysfunctional neutrophils of LAD-1 represents a distinct pathology from the commonly encountered forms of inflammatory bowel disease (IBD). The existence of active IBD in the presence of dysfunctional CD18/CD11(a-b) intercellular adhesion molecules (ICAM-1) interaction is relevant to the proposed targeting of ICAM-1 for the treatment of Crohn's disease.

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