为了优化月见草油-β-环糊精包合物的制备工艺。采用饱和水溶液法制备月见草油β-环糊精包合物,以β-环糊精与月见草油的投料比、包合温度和包合时间为考察因素,月见草油包合物包合率和包合物得率的综合评分为指标,通过星点设计-响应面...为了优化月见草油-β-环糊精包合物的制备工艺。采用饱和水溶液法制备月见草油β-环糊精包合物,以β-环糊精与月见草油的投料比、包合温度和包合时间为考察因素,月见草油包合物包合率和包合物得率的综合评分为指标,通过星点设计-响应面法优化制备工艺,经红外分析和差示扫描量热进行包合物形成的验证。最佳包合工艺为β-环糊精与月见草油投料比为5∶1 m L/g、包合温度55℃、包合时间1.8 h,在此最佳工艺条件下,月见草油-β-环糊精包合物的包合率和包合物得率分别为81.56%和92.28%。实验证明月见草油可与β-环糊精形成稳定的包合物,为月见草油的应用开发提供了理论基础。展开更多
Peripheral nerve injuries with a poor prognosis are common.Evening primrose oil（EPO） has beneficial biological effects and immunomodulatory properties.Since electrical activity plays a major role in neural regenerat...Peripheral nerve injuries with a poor prognosis are common.Evening primrose oil（EPO） has beneficial biological effects and immunomodulatory properties.Since electrical activity plays a major role in neural regeneration,the present study investigated the effects of electrical stimulation（ES）,combined with evening primrose oil（EPO）,on sciatic nerve function after a crush injury in rats.In anesthetized rats,the sciatic nerve was crushed using small haemostatic forceps followed by ES and/or EPO treatment for 4 weeks.Functional recovery of the sciatic nerve was assessed using the sciatic functional index.Histopathological changes of gastrocnemius muscle atrophy were investigated by light microscopy.Electrophysiological changes were assessed by the nerve conduction velocity of sciatic nerves.Immunohistochemistry was used to determine the remyelination of the sciatic nerve following the interventions.EPO ＋ ES,EPO,and ES obviously improved sciatic nerve function assessed by the sciatic functional index and nerve conduction velocity of the sciatic nerve at 28 days after operation.Expression of the peripheral nerve remyelination marker,protein zero（P0）,was increased in the treatment groups at 28 days after operation.Muscle atrophy severity was decreased significantly while the nerve conduction velocity was increased significantly in rats with sciatic nerve injury in the injury ＋ EPO ＋ ES group than in the EPO or ES group.Totally speaking,the combined use of EPO and ES may produce an improving effect on the function of sciatic nerves injured by a crush.The increased expression of P0 may have contributed to improving the functional effects of combination therapy with EPO and ES as well as the electrophysiological and histopathological features of the injured peripheral nerve.展开更多
文摘为了优化月见草油-β-环糊精包合物的制备工艺。采用饱和水溶液法制备月见草油β-环糊精包合物,以β-环糊精与月见草油的投料比、包合温度和包合时间为考察因素,月见草油包合物包合率和包合物得率的综合评分为指标,通过星点设计-响应面法优化制备工艺,经红外分析和差示扫描量热进行包合物形成的验证。最佳包合工艺为β-环糊精与月见草油投料比为5∶1 m L/g、包合温度55℃、包合时间1.8 h,在此最佳工艺条件下,月见草油-β-环糊精包合物的包合率和包合物得率分别为81.56%和92.28%。实验证明月见草油可与β-环糊精形成稳定的包合物,为月见草油的应用开发提供了理论基础。
基金financially supported by the Neuroscience Research Center of the Tabriz University of Medical Sciences,Tabriz,Iran
文摘Peripheral nerve injuries with a poor prognosis are common.Evening primrose oil（EPO） has beneficial biological effects and immunomodulatory properties.Since electrical activity plays a major role in neural regeneration,the present study investigated the effects of electrical stimulation（ES）,combined with evening primrose oil（EPO）,on sciatic nerve function after a crush injury in rats.In anesthetized rats,the sciatic nerve was crushed using small haemostatic forceps followed by ES and/or EPO treatment for 4 weeks.Functional recovery of the sciatic nerve was assessed using the sciatic functional index.Histopathological changes of gastrocnemius muscle atrophy were investigated by light microscopy.Electrophysiological changes were assessed by the nerve conduction velocity of sciatic nerves.Immunohistochemistry was used to determine the remyelination of the sciatic nerve following the interventions.EPO ＋ ES,EPO,and ES obviously improved sciatic nerve function assessed by the sciatic functional index and nerve conduction velocity of the sciatic nerve at 28 days after operation.Expression of the peripheral nerve remyelination marker,protein zero（P0）,was increased in the treatment groups at 28 days after operation.Muscle atrophy severity was decreased significantly while the nerve conduction velocity was increased significantly in rats with sciatic nerve injury in the injury ＋ EPO ＋ ES group than in the EPO or ES group.Totally speaking,the combined use of EPO and ES may produce an improving effect on the function of sciatic nerves injured by a crush.The increased expression of P0 may have contributed to improving the functional effects of combination therapy with EPO and ES as well as the electrophysiological and histopathological features of the injured peripheral nerve.
