首页 > 文献资料
-
Stroke remains a worldwide health problem. Salvianolate exerts a protective effect in various mi-crocirculatory disturbance-related diseases, but studies of the mechanisms underlying its protective action have mainly focused on the myocardium, whereas little research has been carried out in brain tissue fol owing ischemia-reperfusion. We assessed the neuroprotective effects of salvianolate in a rat model of cerebral ischemia-reperfusion injury induced using the suture method. At onset and 24 and 48 hours after reperfusion, rats were intraperitoneal y injected with salvianolate (18 mg/kg) or saline. Neurological deficit scores at 72 hours showed that the neurological functions of rats that had received salvianolate were significantly better than those of the rats that had received saline. 2,3,5-Triphenyltetrazolium chloride was used to stain cerebral tissue to determine the extent of the infarct area. A significantly smal er infarct area and a significantly lower number of apoptotic cel s were observed after treatment with salvianolate compared with the saline treatment. Expression of heat shock protein 22 and phosphorylated protein kinase B in ischemic brain tissue was significantly greater in rats treated with salvianolate compared with rats treated with saline. Our findings suggest that salvianolate provides neuroprotective effects against cerebral ischemia-reperfusion injury by upregulating heat shock protein 22 and phosphorylated protein kinase B expression.
-
对《中国药典》2005年版丹参中丹酚酸B含量测定方法的探讨
丹参为唇形科植物丹参Salviae miltiorrhizaeBge.的干燥根及根茎,具有祛瘀止痛,活血通经,清心除烦等功效,为临床常用中药.收载于<中国药典>(2005年版)一部[1],在丹酚酸B的含量测定中供试品溶液的制备方法采取的是75%甲醇加热回流1 h提取,以HPLC进行含量测定,该法重现性好,但操作复杂,耗时费能.为使操作简单、快速,减少有机溶剂对人的毒害和对环境的污染.我们参考有关文献[2-3]改进样品制备方法,并与药典方法进行比较,结果较为满意.