AIM: To study influence of Valeriana officinalis var. latifolia(VOL) on expression of C Fos,C Jun after focal cerebral ischemia. METHODS: Inducing rat model of reversible middle cerebral artery occlusion(MCAO)using Ko...AIM: To study influence of Valeriana officinalis var. latifolia(VOL) on expression of C Fos,C Jun after focal cerebral ischemia. METHODS: Inducing rat model of reversible middle cerebral artery occlusion(MCAO)using Koizumi’s intraluminal suture occlusion method.48 male rats were divided into 5 groups randomly, pseudo operation group, MCAO group, saline control group,VOL group.2 hours after MCAO, we took gastric gavage with VOL and saline, 8 hour per time, and took out of brain to test C Fos,C Jun expression immunohistochemically at the 5th day after operation.RESULTS: There was no positive cell in each hippocampus zone of normal group;we observed C Fos, C Jun positive cells in each Hippocampus zone after MCAO;Density of C Fos,C Jun positive cells of VOL group were apparently lower than that of simple ischemia group. CONCLUSION: VOL can relieve histopathological lesions after cerebral ischemia and promote protection function of rat through inhibiting the expression of C Fos,C Jun expression.展开更多
采用分子蒸馏法对缬草挥发油进一步纯化。在单因素实验的基础上,通过响应面法优化分子蒸馏技术纯化缬草挥发油所需温度、进料速度、刮膜转速的最佳工艺参数,采用弹性石英毛细管柱TR-5,在检测器温度为250℃,气化温度为250℃,分流比为50∶...采用分子蒸馏法对缬草挥发油进一步纯化。在单因素实验的基础上,通过响应面法优化分子蒸馏技术纯化缬草挥发油所需温度、进料速度、刮膜转速的最佳工艺参数,采用弹性石英毛细管柱TR-5,在检测器温度为250℃,气化温度为250℃,分流比为50∶1条件下进行GC法测定,并用内标法定量。考察蒸发温度,刮膜速率,进料速度等对缬草挥发油的主要成分乙酸龙脑酯的含量的影响。结果表明:最佳工艺条件为:进料速度为82 m L/h,蒸馏温度68℃,刮膜转速188 r/min,乙酸龙脑酯的质量分数为77.46%。结论:通过分子蒸馏法可得到比传统的水蒸气蒸馏法所提挥发油的有效成分质量分数要高,在挥发油提纯工业化生产方面有很好的应用前景。展开更多
文摘AIM: To study influence of Valeriana officinalis var. latifolia(VOL) on expression of C Fos,C Jun after focal cerebral ischemia. METHODS: Inducing rat model of reversible middle cerebral artery occlusion(MCAO)using Koizumi’s intraluminal suture occlusion method.48 male rats were divided into 5 groups randomly, pseudo operation group, MCAO group, saline control group,VOL group.2 hours after MCAO, we took gastric gavage with VOL and saline, 8 hour per time, and took out of brain to test C Fos,C Jun expression immunohistochemically at the 5th day after operation.RESULTS: There was no positive cell in each hippocampus zone of normal group;we observed C Fos, C Jun positive cells in each Hippocampus zone after MCAO;Density of C Fos,C Jun positive cells of VOL group were apparently lower than that of simple ischemia group. CONCLUSION: VOL can relieve histopathological lesions after cerebral ischemia and promote protection function of rat through inhibiting the expression of C Fos,C Jun expression.
文摘采用分子蒸馏法对缬草挥发油进一步纯化。在单因素实验的基础上,通过响应面法优化分子蒸馏技术纯化缬草挥发油所需温度、进料速度、刮膜转速的最佳工艺参数,采用弹性石英毛细管柱TR-5,在检测器温度为250℃,气化温度为250℃,分流比为50∶1条件下进行GC法测定,并用内标法定量。考察蒸发温度,刮膜速率,进料速度等对缬草挥发油的主要成分乙酸龙脑酯的含量的影响。结果表明:最佳工艺条件为:进料速度为82 m L/h,蒸馏温度68℃,刮膜转速188 r/min,乙酸龙脑酯的质量分数为77.46%。结论:通过分子蒸馏法可得到比传统的水蒸气蒸馏法所提挥发油的有效成分质量分数要高,在挥发油提纯工业化生产方面有很好的应用前景。