Transient Increase of Cytokine-Induced Neutrophil Chemoattractant, a Member of the Interleukin-8 Family, in Ischemic Brain Areas After Focal Ischemia in Rats

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Abstract
Background and Purpose We have indicated that neutrophils play an important role in cerebral ischemia-reperfusion injury. Neutrophils are also known to adhere to the endothelial wall through adhesion molecules and to infiltrate into the tissue, and this neutrophilic invasion correlates with the concentration gradient of chemotactic factors. The aim of the present study was to evaluate the role of cytokine-induced neutrophil chemoattractant (CINC) on brain damage in rats from transient ischemia. Methods The brain water content was measured to evaluate postischemic brain injury in rats with 60 minutes of middle cerebral artery occlusion with reperfusion. An enzyme-linked immunosorbent assay was used to evaluate the blood and brain concentrations of CINC, and enzymatic and histological techniques were used to measure the neutrophilic infiltration into the brain. Results The increase of water content was first observed at 6 hours after reperfusion, after which this increase was gradual, with brain edema peaki...

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