To survey the penetrance of Nimodipine to blood-pancreatic barrier. Pancreatic fluid of 15 cases with pancreatic diseases were respectively sampled from pancreatic drainage tubes at different time after Nimodipine taken orally, and the concentrations of Nimodipine in the fluid were measured with high performance liquid chromatography (HPLC). The average concentration of Nimodipine in pancreatic fluid at 0.5,1,1.5,2,2.5,3,3.5,4 hours after Nimodipine administration were 4.79,7.31,9.21,8.04,6.05,5.11,3.37 and 1.19 ng/ml, respectively. The highest value of Nimodipine level in pancreatic fluid were 9.21 ng/ml at 1.5 to 2 hours following Nimodipine taken orally. These suggested that the Nimodipine can penetrate across the bloodpancreatic barrier and make its pharmacolohical effect in pancreatic tissue.
OBJECTIVE: To observe the effect of nerve growth factor (NGF) and nimodipine (NP) on fetal spinal cord graft in repair of injury of spinal cord. METHODS: A total of 144 adult Wistar rats were included in this study. All were made as the hemi-section cavity injury model at the lumbar enlargement and divided into three groups: fetal spinal cord graft (group Tr), fetal spinal cord graft with NGF (group TN), and fetal spinal cord graft with NGF and NP (group TNN). The intracellular concentration of free ionic calcium was measured at the 4th, 8th, and 24th hour, and superoxidase (SOD) and malondialdehyde (MDA) at 3rd, 6th, 12th, 24th and 72nd hour after operation. RESULTS: After spinal cord was injured, the concentration of MDA and intracellular concentration of free ionic calcium increased and reached to the peak at the 6th and 8th hour respectively, but SOD decreased and at 24th hour to its vale. The MDA was significantly lower in group TN than in group Tr, while the SOD was higher (P lt; 0.05). There was no significant difference on intracellular free ionic calcium concentration between group Tr and TN. The concentration of SOD of group TNN was the highest and the intracellular concentration of free ionic calcium was the lowest in the three groups (P lt; 0.05). The weekly mortality was 33%, 31%, 17% respectively in group Tr, TN and TNN. The mortality of group TNN was significantly lower than the other two groups (P lt; 0.01). CONCLUSION: Although the fetal spinal cord graft is an effective method to repair laboratory spinal cord injury, NGF and ND can interrupt secondary injury and increase survival rate of the host.
Objective To evaluate the effectiveness and safety of donepezil in the treatment of senile vascular dementia. Methods The databases such as the Chinese Journal Full-text Database, Chinese Biomedical Literature Database, Chinese Scientific Journals Full-text Database, Chinese Biomedicine Database, PubMed and The Cochrane Library were searched by computer, and the related journals and conference proceedings were also manually searched to include randomized controlled trials (RCTs) on donepezil in the treatment of senile vascular dementia. Studies were screened according to the inclusion and exclusion criteria, data were extracted, the methodological quality of the included studies was assessed according to Jadad score criterion, and meta-analyses were performed by using RevMan 5.0 software. Results Among 25 studies (3586 patients) included, eight described the randomization methods, and three described the double blind methods. The results of meta-analyses showed, compared with the placebo group, donepezil was superior in improving vascular dementia patients’ cognition level (three studies, MD= –1.25, 95%CI –1.61 to –0.88, Plt;0.000 01), intellectual spirit level (two studies, MD=0.66, 95%CI 0.35 to 0.97, Plt;0.000 1), dementia level (three studies, MD= –0.74, 95%CI –1.16 to –0.31, P=0.004), and viability level (two studies, MD= –0.74, 95%CI –1.16 to –0.31, P=0.000 6). In improving the intellectual spirit level, donepezil was superior to piracetam (seven studies, MD=3.25, 95%CI 2.15 to 4.35, Plt;0.000 01), Xuesaitong (two studies, MD=6.12, 95%CI 4.02 to 8.22), Huperzine A (three studies, MD=2.45, 95%CI 1.14 to 3.76, P=0.000 2), and vitamin (two studies, MD=4.00, 95%CI 2.73 to 5.27, Plt;0.000 01). For improving the viability level, donepezil was superior to piracetam (five studies, MD= –3.86, 95%CI –4.83 to –2.89, Plt;0.000 01), Xuesaitong (two studies, MD= –5.49, 95%CI –7.18 to –3.80, Plt;0.000 01), Huperzine A (two studies, MD= –0.78, 95%CI –4.23 to –2.66, P=0.66), vitamin (three studies, MD= –5.88, 95%CI –8.29 to –3.48, Plt;0.000 01), and nimodipine (one study, MD= –7.09, 95%CI –10.81 to –3.37, P=0.000 2). In improving the dementia level (HDS Scale), donepezil was superior to piracetam (one study, MD=5.80, 95%CI 2.78 to 8.82, P=0.000 2), Xuesaitong (one study, MD=3.95, 95%CI 2.32 to 5.58, Plt;0.000 01), vitamin (one study, MD=3.91, 95%CI 0.94 to 6.88, P=0.010), and almitrine (one study, MD=3.37, 95%CI 1.10 to 5.64, P=0.004). Conclusion Current evidence shows that donepezil is likely to be more effective in the treatment of vascular dementia than placebo, piracetam, Xuesaitong, Huperzine A and vitamin. However, for the limited evidence and lower methodological quality of the included studies, this conclusion still needs to be verified with more high-quality RCTs.
ObjectiveTo study the effect of hyperbaric oxygen combined with nimodipine in the treatment of cerebral dysfunction resulted from traumatic brain injury. MethodWe retrospectively collected and analyzed the data of 124 patients with cerebral dysfunction induced by traumatic brain injury, admitted to the Neurosurgery Department during February 2011 to February 2014. All the patients were divided into the traditional treatment group (n=45), the traditional treatment with hyperbaric oxygen group (HBO group, n=40) and the traditional treatment with nimodipine and hyperbaric oxygen group (integrated group, n=39). The differences among the three groups in neurological injury severity evaluated by National Institute of Health Stroke Scale and the cerebral blood flow were recorded and analyzed at three time points (before the treatment, 2 and 4 weeks after treatment). ResultsThere was no significant difference in neurological injury severity and cerebral blood flow among these three groups before treatment (P>0.05). Evaluated at 2 and 4 weeks after treatments, the neurological injury severity of HBO group and integrated group were significantly less than the traditional treatment group (P<0.05); the neurological severity score of integrated group was significantly lower than the HBO group (P<0.05); the cerebral blood flow of HBO group and integrated group were significantly higher than the traditional treatment group (P<0.05); and the cerebral blood flow of integrated group was significantly higher than the HBO group (P<0.05). ConclusionsThe combination therapy of hyperbaric oxygen combined with nimodipine is effective in the treatment of cerebral dysfunction induced by traumatic brain injury, because of its attenuation of neurological injury severity and increase of cerebral blood flow.