Effect of E-selectin pretreatment on cerebral ischemia-reperfusion injury in rats / 中国病理生理杂志

ABSTRACT

AIM: To study the effect of nasal mucosal tolerance to E-selectin on cerebral ischemia-reperfusion injury.METHODS: Two different doses(single and booster) of E-selectin or PBS were dropped into membrana mucosa nasi of rats.The middle cerebral artery occlusion(MCAO) model referring to Zea Longa method with modifications was performed 48 h after the last dose of E-selectin or PBS.After 2 h ischemia and 22 h reperfusion,the numbers of CD3+CD4+T-lymphocyte and CD3+CD8+T lymphocyte subgroup in the blood were examined with flow cytometry.Rats were killed,then part of the animals was used to measure the cerebral infarction volume by TTC staining.mRNA expressions of E-selectin,ICAM-1 and lymphocyte function-associated antigen-1(LFA-1) were determined by RT-PCR and activity of SOD was determined by xanthinoxidanse method in ischemic cortex of the other part of animals.RESULTS: The ratio of the numbers of CD3+CD4+T-lymphocytes and CD3+CD8+T-lymphocytes increased in E-selectin single pretreatment group(P