scholarly journals Core-shell hybrid liposomal vesicles loaded with panax notoginsenoside: preparation, characterization and protective effects on global cerebral ischemia/reperfusion injury and acute myocardial ischemia in rats

2012 ◽  
pp. 4299 ◽  
Author(s):  
Jing Zhang ◽  
Zhang ◽  
Li ◽  
Zhao ◽  
Luo ◽  
...  
Keyword(s):  
Cerebral Ischemia ◽  
Myocardial Ischemia ◽  
Ischemia Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Acute Myocardial Ischemia ◽  
Global Cerebral Ischemia ◽  
Core Shell ◽  
Protective Effects ◽  
Cerebral Ischemia Reperfusion ◽  
Cerebral Ischemia Reperfusion Injury

Protective Effects of Total Flavones of Rhododendra against Global Cerebral Ischemia Reperfusion Injury

2009 ◽  
Vol 37 (05) ◽  
pp. 877-887 ◽  
Author(s):  
Tao Yu ◽  
Qiao-Er Chen ◽  
Zhi-Wu Chen ◽  
Zizhong Xiong ◽  
Mao Ye
Keyword(s):  
Cerebral Ischemia ◽  
Reperfusion Injury ◽  
Calcium Concentration ◽  
Ischemia Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Global Cerebral Ischemia ◽  
Protective Effects ◽  
Cerebral Ischemia Reperfusion ◽  
Cerebral Ischemia Reperfusion Injury ◽  
Brain Water

The purpose of this research was to demonstrate the protective effects and possible mechanisms of total flavones of rhododendra (TFR) against global cerebral ischemia reperfusion injury in rats. Global cerebral ischemia/reperfusion injury was caused by four vessel occlusion (bilateral vertebral arteries and bilateral carotid arteries, 4-VO). The electroencephalographic (EEG) changes were recorded. The EEG, brain water content, levels of malondialdehyde (MDA) and lactate dehydrogenase (LDH) activity in plasma, aggregation of platelets induced by ADP, and the resting and CaCl2-induced increase of free intracellular calcium concentration ([ Ca2+]i), were also evaluated. TFR dramatically elevated EEG amplitude, reduced the brain water content and the resting cytoplasmic free calcium concentration, inhibited the increase of [ Ca2+]iinduced by CaCl2and had an inhibitory effect on platelet aggregation. The LDH activity and the MDA content in plasma were also decreased. These results indicate that TFR has protective effects against cerebral injury in rats, which might be associated with its antioxidant properties, antiplatelet effects and possible inhibition of Cal2+influx to reduce [ Ca2+]i.

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