The role of cytokine-induced neutrophil chemoattractant-1 in neutrophil-mediated remote lung injury after intestinal ischaemia/reperfusion in rats.
OBJECTIVE
Remote lung injury is induced by ischaemia/reperfusion (I/R) of the gastrointestinal tract and the liver following hypovolaemic shock. In the present study, the role of cytokine-induced neutrophil chemoattractant (CINC), a member of the interleukin (IL)-8 family, in neutrophil-mediated remote lung injury following intestinal I/R was investigated in anaesthetized rats.


METHODS
The I/R group was subjected to 60 min of occlusion of the superior mesenteric artery with laparotomy, followed by 240 min of intestinal reperfusion. The sham-operated (sham) group was subjected to the same procedures with the exception of intestinal I/R.


RESULTS
In the I/R group, the permeability index of the lung, the neutrophil count in pulmonary vascular lavage fluid and bronchoalveolar lavage fluid (BALF), lung myeloperoxidase activity and neutrophil oxidative production were all significantly greater than those in the sham group. Cytokine-induced neutrophil chemoattractant-1 levels in blood and BALF were significantly increased at 240 min after intestinal reperfusion. There was a significant relationship between neutrophils in BALF and CINC-1 level in BALE CONCLUSION: These findings suggest that intestinal reperfusion was associated with activation and accumulation of neutrophils in the lung and resulted in remote lung injury with increased microvascular permeability. Thus, CINC-1 in BALF may induce neutrophil migration from the pulmonary vessels to the interstitium and alveolar spaces in remote lung injury after intestinal I/R.
Ishii
H
H
Respiratory Medicine, Internal Medicine, Fukuoka University, Japan.
Ishibashi
M
M
Takayama
M
M
Nishida
T
T
Yoshida
M
M
D000818:Animals; D001992:Bronchoalveolar Lavage Fluid / Q000737:chemistry / Q000276:immunology; D002199:Capillary Permeability / Q000276:immunology; D054360:Chemokine CXCL1; D019743:Chemokines, CXC; D002630:Chemotactic Factors / Q000032:analysis / Q000097:blood / Q000276:immunology*; D004195:Disease Models, Animal; D006133:Growth Substances / Q000032:analysis / Q000097:blood / Q000276:immunology*; D036341:Intercellular Signaling Peptides and Proteins; D007422:Intestines / Q000098:blood supply*; D007958:Leukocyte Count; D008297:Male; D018375:Neutrophil Activation / Q000276:immunology*; D009504:Neutrophils / Q000276:immunology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D015427:Reperfusion Injury / Q000150:complications*; D012128:Respiratory Distress Syndrome / Q000097:blood / Q000209:etiology* / Q000276:immunology* / Q000503:physiopathology; D012769:Shock / Q000150:complications*; D013997:Time Factors
D054360:Chemokine CXCL1; D019743:Chemokines, CXC; D002630:Chemotactic Factors; C513297:Cxcl1 protein, rat; D006133:Growth Substances; D036341:Intercellular Signaling Peptides and Proteins