NDLI: Neutrophil Emigration in the Skin, Lungs, and Peritoneum: Different Requirements for CD11/CD18 Revealed by CD18-deficient Mice

Content Provider	PubMed Central
Author	Mizgerd, Joseph P. Kubo, Hiroshi Kutkoski, Gregory J. Bhagwan, Sabrina D. Karin, Scharffetter-kochanek Beaudet, Arthur L. Doerschuk, Claire M.
Copyright Year	1997
Abstract	To determine the role of CD11/CD18 complexes in neutrophil emigration, inflammation was induced in the skin, lungs, or peritoneum of mutant mice deficient in CD18 (CD18−/− mutants). Peripheral blood of CD18−/− mutants contained 11-fold more neutrophils than did blood of wild-type (WT) mice. During irritant dermatitis induced by topical application of croton oil, the number of emigrated neutrophils in histological sections of dermis was 98% less in CD18−/− mutants than in WT mice. During Streptococcus pneumoniae pneumonia, neutrophil emigration in CD18−/− mutants was not reduced. These data are consistent with expectations based on studies using blocking antibodies to inhibit CD11/CD18 complexes, and on observations of humans lacking CD11/CD18 complexes. The number of emigrated neutrophils in lung sections during Escherichia coli pneumonia, or in peritoneal lavage fluid after 4 h of S. pneumoniae peritonitis, was not reduced in CD18−/− mutants, but rather was greater than the WT values (240 ± 30 and 220 ± 30% WT, respectively). Also, there was no inhibition of neutrophil emigration during sterile peritonitis induced by intraperitoneal injection of thioglycollate (90 ± 20% WT). These data contrast with expectations. Whereas CD11/CD18 complexes are essential to the dermal emigration of neutrophils during acute dermatitis, CD18−/− mutant mice demonstrate surprising alternative pathways for neutrophil emigration during pneumonia or peritonitis.
Starting Page	1357
File Format	PDF
ISSN	15409538
e-ISSN	15409538
Journal	The Journal of Experimental Medicine
Issue Number	8
Volume Number	186
Language	English
Publisher	The Rockefeller University Press
Publisher Date	1997-10-20
Access Restriction	Open
Rights Holder	The Rockefeller University Press
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Immunology and Allergy Immunology

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