[Protective effect of Xingnaojing and Xuesaitong injections on cerebral ischemic reperfusion injury in rats].
OBJECTIVE
To investigate the mechanism of protective effect of Xingnaojing and Xuesaitong injections on cerebral ischemic reperfusion injury in rats.


METHODS
The focal cerebral ischemia & reperfusion model was established by middle cerebral artery occlusion (MCAO). A total of 152 male SD rats were randomly assigned into 19 groups: sham operated group, Xingnaojing group, Xingnaojing plus Xuesaitong group and control group according to different reperfusion durations: 2, 4, 8, 24, 48, 72 h. Each group had 8 rats. Rats in Xingnaojing group received the ip injections of Xingnaojing (1 ml x 100 (-1) x d(-1)) until an onset of ischemia; Xingnaojing plus Xuesaitong group received the ip injections of Xingnaojing (1 ml x 100 g(-1) x d(-1)) and Xuesaitong (1 ml x 100 g(-1) x d(-1)) until an onset of ischemia; In the meantime, rats in control group received the same ip dose of saline. The levels of SOD and MDA were detected. The number of apoptotic neurons was detected by terminal-deoxynucleotidyl transferase medicated nick end labeling (TUNEL).


RESULTS
During ischemic reperfusion, the MDA content of brain homogenate increased while the SOD activity decreased (P < 0.05). Xingnaojing could significantly inhibit the increase of MDA after cerebral ischemic reperfusion (P < 0.05) and the decrease of SOD activity in rats. The changes of SOD and MDA were smaller in the Xingnaojing plus Xuesaitong group than those in the Xinnaojing group (P < 0.01). The number of apoptotic neurons in the Xingnaojing group was significantly lower than that in control group (P < 0.05). And the number of apoptotic neurons in the Xingnaojing plus Xuesaitong group was even lower than that in the Xingnaojing group(4,8 h: P < 0.05, 24, 48, 72 h: P < 0.01).


CONCLUSIONS
The Xingnaojing plus Xuesaitong injection has protective function after cerebral ischemic reperfusion.
Guo
Feng
F
Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China. zjguofeng@yahoo.com.cn
Lu
Xiao-Wei
XW
Xu
Qiu-Ping
QP
D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D002545:Brain Ischemia / Q000188:drug therapy*; D002544:Cerebral Infarction / Q000188:drug therapy; D004195:Disease Models, Animal; D004359:Drug Therapy, Combination; D004365:Drugs, Chinese Herbal / Q000494:pharmacology / Q000627:therapeutic use*; D020244:Infarction, Middle Cerebral Artery; D008297:Male; D008517:Phytotherapy; D051381:Rats; D017207:Rats, Sprague-Dawley; D015427:Reperfusion Injury / Q000188:drug therapy*
D004365:Drugs, Chinese Herbal