Promoting effect of intermedin and adrenomedullin on cerebral microcirculation in rat models of cerebral ischemia / 中国比较医学杂志

ABSTRACT

Objective To explore the effect of intermedin ( IMD ) and adrenomedullin ( ADM ) on cerebral microcirculation in rats with cerebral ischemia. Methods Rat cerebral ischemia ( CI) model was established by middle cerebral artery occlusion. 40 SPF male adult Sprague-Dawley ( SD) rats were randomly divided into three groupsCI+NS ( normal saline) group, CI+ADM group and CI+IMD group, which were used to observe the changes of brain surface microcirculatory perfusion with a laser Doppler flowmeter. Results The differences of brain surface microcirculatory perfusion were statistically significant among the CI+NS group, CI+ADM group and CI+IMD group ( F=53. 426, P<0. 05 ) . Multiple comparison showed that the brain surface microcirculatory perfusion in the CI+IMD group was higher than that of the CI+NS group and CI+ADM group. Conclusions Intermedin can improve the cerebral microcirculation in rats with cerebral ischemia, and its therapeutic effect is better than adrenomedullin.