Platelet endothelial cell adhesion molecule-1 in neutrophil emigration during acute bacterial pneumonia in mice and rats

Sadatomo Tasaka, Lan Qin, Ariko Saijo, Steven M. Albelda, Horace M. DeLisser, Claire M. Doerschuk

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Platelet endothelial cell adhesion molecule-1 (PECAM-1) (CD31) is an adhesion molecule believed to mediate transendothelial migration of neutrophils and other leukocytes after CD11/CD18-mediated adhesion. Our study evaluated the role of PECAM-1 in neutrophil emigration across the pulmonary capillaries and the bronchial microvasculature using blocking anti-PECAM-1 antibodies in mice and rats. Neutrophil emigration was induced by Escherichia coli, a stimulus eliciting CD11/CD18-dependent emigration, or Streptococcus pneumoniae, a stimulus inducing CD11/CD18-independent emigration. Although anti-PECAM-1 antibodies partially inhibited glycogen-induced neutrophil emigration into the peritoneum, neutrophil emigration across either the pulmonary capillaries or the bronchial microvasculature in response to either E. coli or S. pneumoniae was not prevented when the function of PECAM-1 was inhibited in either mice or rats. There was also no increase in the number of intravascular neutrophils within the bronchial vessels after treatment with anti-PECAM-1 antibody. These studies indicate that either CD11/CD18-dependent or -independent adhesion pathways may lead to PECAM-1-independent transendothelial migration through the pulmonary or the bronchial endothelium.

Original languageEnglish
Pages (from-to)164-170
Number of pages7
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume167
Issue number2
DOIs
Publication statusPublished - 2003 Jan 15
Externally publishedYes

Fingerprint

CD31 Antigens
Bacterial Pneumonia
Emigration and Immigration
Neutrophils
Transendothelial and Transepithelial Migration
Streptococcus pneumoniae
Microvessels
Lung
Antibodies
Escherichia coli
Peritoneum
Glycogen
Endothelium
Leukocytes

Keywords

  • Adhesion molecules
  • Infectious immunity-bacteria
  • Lung
  • Neutrophils
  • Rodent

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Platelet endothelial cell adhesion molecule-1 in neutrophil emigration during acute bacterial pneumonia in mice and rats. / Tasaka, Sadatomo; Qin, Lan; Saijo, Ariko; Albelda, Steven M.; DeLisser, Horace M.; Doerschuk, Claire M.

In: American Journal of Respiratory and Critical Care Medicine, Vol. 167, No. 2, 15.01.2003, p. 164-170.

Research output: Contribution to journalArticle

Tasaka, Sadatomo ; Qin, Lan ; Saijo, Ariko ; Albelda, Steven M. ; DeLisser, Horace M. ; Doerschuk, Claire M. / Platelet endothelial cell adhesion molecule-1 in neutrophil emigration during acute bacterial pneumonia in mice and rats. In: American Journal of Respiratory and Critical Care Medicine. 2003 ; Vol. 167, No. 2. pp. 164-170.
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