Studies of the effects of heparin, dexamethasone and ibuprofen on clearance function of hepatic Kupffer cell complement receptors during acute obstructive cholangitis in rats

The study was carried out to observe the effects of heparin,dexamethasone and ibuprofen on the clearance function of the Kupffer cell complement receptors(KCCR) in experimental acute obstructive cholangitis (AOC) in rats.It was found that in AOC,the mortality rate was far higher in not treated group and dexamethasone treated group than in ibuprofen and heparin treated groups and the clearance function of KCCR was significantly decreased 48h after the onset of AOC but it was strengthened with the administration of heparin and ibuprofen.The prominent pathological changes of AOC were the damages on the hepatocytes,degeneration of Kupffer cells with reduction of their functions and damages of the pulmonary alveolar walls. The phagocytic function of Kupffer cells were restored and damages of the liver and lungs abated after the administration of heparin.This study was financially suppoited by the National Funds for Natural Science of China (Approval certificate numberof NSFC 38870770).

补体受体免疫球蛋白超家族分子在调节肝脏免疫反应中的研究进展

库普弗细胞(KC)是肝脏免疫细胞的重要组成部分,其对于维持组织稳态和应对肝损伤的快速反应至关重要。补体受体免疫球蛋白超家族分子(CRIg)是KC膜上的一种受体蛋白,其既能以补体结合的方式捕获流经肝脏血液中的病原体,也可以通过调节肝脏内的免疫细胞介导肝脏免疫反应。近年来CRIg的研究进一步证实了其在调节肝脏免疫中的关键地位,本文综述了CRIg的主要作用方式以及其在调节肝脏免疫中的新进展。

药物对急性胆道感染大鼠的枯否氏细胞补体受体功能的影响

本实验选用肝素、地塞米松、布洛芬三种药物，试图增强急性胆道感染大鼠的枯否氏细胞（ＫＣ）补体受体（ＣＲ）功能，结果显示：急性胆道感染（ＡＣ）组、地塞米松处理（ＤＴ）组动物死亡率明显高于肝素处理（ＨＴ）、布洛芬（ＩＴ）和假手术（ＳＯ）组；ＡＣ组术后４８ｈＫＣＣＲ功能持续下降，ＨＴ、ＩＴ能增强感染大鼠的ＫＣＣＲ功能；ＡＣ组肝肺组织细胞明显受损，ＫＣ变性，功能下降，ＨＴ能活化ＫＣＣＲ功能，吞噬活跃，组织受损轻，表明ＫＣＣＲ在急性胆道感染时是机体重要的防御屏障，其功能增强能减少动物死亡和减轻肝肺组织受损。小剂量的肝素是有明显的治疗作用，优于布洛芬和地塞米松。