Effects of dexamthasone with different doses on aquaporin-4 in brain of intracerebral hemorrhage rats
Jixiang Chen
Hui Li
摘要：Objective:To determine the relationship between the expression of aquaporin-4(AQP4) after intracerebral hemorrhage and dexamethasone treated. Methods:Collagenase Ⅶ was injected in caudate nucleus in a stereotaxis frame to establish the intracerebral hemorrhage(ICH) animal models. The intracerebral hemorrhage(ICH) rats were randomly divided into four groups: the sham group (group A), the ICH group(group B), low dosertreated group(group C), moderate dose group(group D) and high dose group(group E). The groups were respectively received an intraperitoneal dexamethasone injection with 1 mg/kg, 15 mg/kg, 30 mg/kg, twice a day for three days. The brain water content(BWC), the permeability of blood-brain barrier(BBB) and the expression of AQP4 were observed. Results:Both the BBB disruption and AQP4 expression decreased in treated groups, and the AQP4 expression had a dose-dependent manner in the dexamethasone treatment. And it seemed that low dose dexamethasone was in favor of brain swelling elimination, but the higher dosage had not similar effect. Conclusion:Dexamethesone may play a critical role on expression of AQP4 in the physiopathology of hemorrhagic edema.
机标关键词：
分类号：R74(神经病学与精神病学)
资助基金：湖北省自然科学基金(2004AA30C97)
论文发表日期：2007-09-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：5( 302-306 )
英文信息