scholarly journals PET Demonstrates Functional Recovery after Treatment by Danhong Injection in a Rat Model of Cerebral Ischemic-Reperfusion Injury

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Zefeng Wang ◽  
Fahuan Song ◽  
Jinhui Li ◽  
Yuyan Zhang ◽  
Yu He ◽  
...  
Keyword(s):  
Glucose Metabolism ◽  
Reperfusion Injury ◽  
Rat Model ◽  
Infarct Volume ◽  
Cerebral Infarct ◽  
Ischemic Reperfusion Injury ◽  
Ischemic Reperfusion ◽  
Danhong Injection ◽  
Cerebral Ischemic ◽  
Cerebral Ischemic Reperfusion

This study aimed to investigate neuroprotection of Danhong injection (DHI) in a rat model of cerebral ischemia using18F-fluorodeoxyglucose positron emission tomography (18F-FDG-PET).Method. Rats were divided into 5 groups: sham group, ischemia-reperfusion untreated (IRU) group, DHI-1 group (DHI 1 mL/kg/d), DHI-2 group (DHI 2 mL/kg/d), and DHI-4 group (DHI 4 mL/kg/d). AII the treated groups were intraperitoneally injected with DHI daily for 14 days. The therapeutic effects in terms of cerebral infarct volume, neurological function, and cerebral glucose metabolism were evaluated. Expression of TNF-αand IL-1βwas detected with enzyme-linked immunosorbent assay (ELISA). Levels of mature neuronal marker (NeuN), glial marker (GFAP), vascular density factor (vWF), and glucose transporter 1 (GLUT1) were assessed by immunohistochemistry.Results. Compared with the IRU group, rats treated with DHI showed dose dependent reductions in cerebral infarct volume and levels of proinflammatory cytokines, improvement of neurological function, and recovery of cerebral glucose metabolism. Meanwhile, the significantly increased numbers of neurons, gliocytes, and vessels and the recovery of glucose utilization were found in the peri-infarct region after DHI treatment using immunohistochemical analysis.Conclusion. This study demonstrated the metabolic recovery after DHI treatment by micro-PET imaging with18F-FDG and the neuroprotective effects of DHI in a rat model of cerebral ischemic-reperfusion injury.

scholarly journals Protective Effect of Pharmacological Preconditioning of Total Flavones of Abelmoschl Manihot on Cerebral Ischemic Reperfusion Injury in Rats

2007 ◽  
Vol 35 (04) ◽  
pp. 653-661 ◽  
Author(s):  
Ji-Yue Wen ◽  
Zhi-Wu Chen
Keyword(s):  
Protective Effect ◽  
Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Inos Mrna ◽  
Ischemic Reperfusion Injury ◽  
Ischemic Reperfusion ◽  
Infarction Volume ◽  
Cerebral Ischemic ◽  
Cerebral Ischemic Reperfusion ◽  
Pharmacological Preconditioning

The present study was to investigate the effect of pharmacological preconditioning of total flavones of Abelmoschl Manihot (TFA) on cerebral ischemic reperfusion injury in rats. Rat cerebral ischemia/reperfusion injury was induced by occluding the right middle cerebral artery (MCA). The infarct size was determined by staining with 2,3,5-triphenyl tetrazalium chloride (TTC). The serum malonaldehyde (MDA), nitric oxide (NO) and lactate dehydrogenase (LDH) levels were measured by using spectrophotometry; Inducible NO synthase (iNOS) mRNA expression was detected by RT-PCR method. The percentage of cerebral infarction volume was 28.1 ± 0.8 in the model group, while TFA or nimodipine (Nim) pretreatment 36 hours prior to the ischemic insult significantly decreased the infarction volume. Increases of serum LDH activity and MDA level were observed after ischemia/reperfusion, but these changes were inhibited in rats pretreated with either TFA (20, 40, 80, 160 mg/kg) or Nim, indicating a delayed protective effect of TFA preconditioning on cerebral ischemic reperfusion injury. In addition, the serum NO level and the cerebral iNOS mRNA were up-regulated, suggesting a possible mechanism for the protective effect of TFA pretreatment on cerebral ischemic reperfusion injury.

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