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单抗HIM82对中性粒细胞ROS损伤RBC的保护作用
作者姓名:Guo H  Fa X  Tian P  Yang L
作者单位:中国医学科学院中国协和医科大学血液病学研究所天津 300020
基金项目:国家自然科学基金,卫生部科研项目,39470273,96-1-016,,
摘    要:目的研究单抗HIM82(30 μg/ml)是否能对PMA激活PMN后产生的ROS进行降调节,进而降低ROS对红细胞的损伤,验证HIM82对RBC损伤有无保护作用.方法用PMA激活PMN后产生的ROS对无HIM82和加HIM82保护的RBC进行损伤实验.结果加HIM82保护后的RBC膜蛋白乙酰胆碱酯酶(AchE)活性由损伤时的(71.36±22.15)%恢复到(87.60±14.78)%(n=6 P<0.001),活性提高了16.30%;对RBC膜脂质过氧化损伤的保护作用使损伤率从(52.42±20.63)%减小到(23.81±12.40)%(n=9 P<0.01),脂质过氧化损伤降低了54.57%,RBC膜脆性损伤用溶血率表示,溶血率由(80.76±20.23)%下降到(66.30±7.08)%(n=6 P<0.001),下降了17.90%.结论单抗HIM82不仅能明显地降低PMN的ROS水平也能有效保护周围红细胞,可能对防治多种趋化因子激活PMN引起的ROS损伤提供一种新的有效途径..

关 键 词:中性粒细胞  单克隆抗体  活性氧物质  红细胞
修稿时间:1997年7月24日

HIM82 protects RBC from the ROS damage produced by activated PMN
Guo H,Fa X,Tian P,Yang L.HIM82 protects RBC from the ROS damage produced by activated PMN[J].Acta Academiae Medicinae Sinicae,1998,20(4):251-256.
Authors:Guo H  Fa X  Tian P  Yang L
Institution:Institute of Hematology, CAMS and PUMC, Tianjin 300020.
Abstract:OBJECTIVE: To investigate the protection of RBC from ROS damage produced by activated PMN with McAb-HIM82. METHODS: RBC was injured by ROS produced from PMN activated with PMA and the injury was antagonised by adding HIM82(30 micrograms/ml) to the medium with PMN. RESULTS: Comparing antagonitic group with injured group, the activity of AchE on RBC membrane after adding HIM82 was recovered from (71.36 +/- 22.15)% to (87.66 +/- 14.78)% (n = 6 P < 0.001). The proportion of MDA was decreased from (52.42 +/- 20.63)% to (23.81 +/- 12.4)%(n = 9 P < 0.001); the hemolysis rate was decreased from (80.76 +/- 20.23)% to (66.30 +/- 7.08)% (n = 6 P < 0.05); CONCLUSIONS: The result showed that the McAb HIM82 could protect RBC from injury by down-reguration of ROS level in activated PMN. It could help to establish a newer approach to study the regulation effect of McAb HIM82 on ROS production from PMN actived with relerant cytokines as well as mediators.
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