摘要
目的:通过研究半夏白术天麻汤干预后的自发性高血压大鼠(SHR)肾脏蛋白表达情况,以揭示半夏白术天麻汤治疗高血压肾损伤的蛋白质组学机制,为进一步阐明中药复方半夏白术天麻汤的作用机理提供依据。方法:6周龄自发性高血压大鼠随机分为2组,SHR组与半夏白术天麻汤组,半夏白术天麻汤组以半夏白术天麻汤水煎剂灌胃18 w,SHR组和血压正常的Wistar-Kyoto大鼠(WKY)灌服等量的蒸馏水,三组大鼠于24周龄处理,颈动脉插管测量大鼠血压,肾脏组织蛋白提取、纯化后做双向电泳分析,图谱经PDQuest软件分析后得到的差异蛋白点用串联飞行时间质谱仪(MALDI-TOF/TOF MS)分析鉴定。Western blot测定肾脏铜锌超氧化物歧化酶、过氧化物酶2蛋白的表达。结果:SHR与WKY比较,有11个蛋白点表达发生变化,其中半夏白术天麻汤可调节肾脏铜锌超氧化物歧化酶、过氧化物酶2及可能调节α-B晶状体的蛋白表达,这些蛋白靶点主要与氧化应激密切相关,提示半夏白术天麻汤可通过抗氧化应激来发挥治疗作用。结论:氧化应激在高血压肾损伤过程中起到重要的作用。半夏白术天麻汤可抗氧化应激,靶蛋白的发现为揭示中药复方半夏白术天麻汤的作用机制提供了理论依据。
Objective ： To study the effect of Banxia Baizhu decoction on the spontaneously hypertensize rats and its possible mechanism. Methods：Male SHRs of 6 weeks old were randomly and equally divided into two groups, the control SHR group and the group treated with BXBZTMD,the treated group were treated with BXBZTMD orally for 18 weeks, the control SHR group and normotensive WKY group were fed with the same amount of distilled water. Rats＇ blood pressure was measured through carotid artery catheterization, and protein of kidney tissues was analyzed by two-dimensional electrophoresis after extraction and purification. Different protein spots expressed significantly which were anlyzed by PDQuest software were then identified by MALDI-TOF/TOF MS. The protein expressions of peroxidase 2 and Cu-Zn superoxide in kidney were determined by Western blot. Results：Compared SHR with WKY, 12 protein spots were changed. BXBZTMD could adjust kidney protein expression such as Cu-Zn superoxide dismutase, peroxidase 2 and may change kidney protein expression such as the ct-15-crystallin ,which were closely related to oxidative stress. These discoveries of the target proteins suggested that BXBZTMD had curative effect by anti-oxidative stress. Conclusion：Oxidative stress plays an important role in the process of hypertensive renal injury. BXBZTMD can play a therapeutic role to oxidative stress. The discovery of the target protein provides a theoretical basis for the mechanism of the therapeutic effect of BXBZTMD.
出处
《中药材》
CAS
CSCD
北大核心
2012年第6期935-939,共5页
Journal of Chinese Medicinal Materials
基金
国家科技部十一五支撑计划资助项目(2006BAI11B08)
关键词
双向电泳
半夏白术天麻汤
自发性高血压大鼠
肾损伤
氧化应激
Two-dimensional electrophoresis
Banxia Baizhu Tianma Decoction
Spontaneously hypertensive rats
Hypertensive renal injury
Oxidative stress
