A simple, sensitive and selective method of high-performance liquid chromatography （HPLC） has been successfully developed for separation of bavachinin enantiomers in Fructus Psoraleae and rat plasma. The separation ...A simple, sensitive and selective method of high-performance liquid chromatography （HPLC） has been successfully developed for separation of bavachinin enantiomers in Fructus Psoraleae and rat plasma. The separation and detection conditions of HPLC were optimized. Chiral bavachinin were separated with the mobile phase of methanol and water （70：30, v/v） at a flow rate of 1.0 mL/min. The linear ranges were in the range of 20-1000 μg/mL. The detection limits were tested as 4 ng/mL and 6 ng/mL for （＋）-bavachinin and （-）-bavachinin, respectively. The method has been applied to analyze chiral bavachinin in rat plasma. HPLC-MS method was used to test the accuracy.展开更多
Asthmatic inflammation is mediated by a type 2 helper T cell （Th2） cytokine response, and blocking Th2 cytokine production is proven to have a potent therapeutic effect against asthmatic inflammation. Using IL-4-gre...Asthmatic inflammation is mediated by a type 2 helper T cell （Th2） cytokine response, and blocking Th2 cytokine production is proven to have a potent therapeutic effect against asthmatic inflammation. Using IL-4-green fluorescent protein （GFP） reporter mice, we demonstrated that Bavachinin, a single compound isolated from a Chinese herb, significantly inhibited Th2 cytokine production, including IL-4, IL-5 and IL-13. Notably, this compound almost completely blocked inflammation in the ovalbumin （OVA）-sensitized animal asthma model. Furthermore, we demonstrated that this chemical selectively affects the level of GATA-3, most likely by affecting the stability of GATA-3 mRNA. Our results demonstrate, for the first time, the potential therapeutic value of this single compound derived from Chinese herbs.展开更多
基金supported by the National Scientifc Foundation of China(NSFC nos.9081710330973672 and 20775055)+2 种基金Doctoral Fund of Ministry of Education of China(No 20110141110024)Hubei Provincial Scientifc Foundation(No 2011CDB475)the Fundamental Research Funds for the Central Universities
文摘A simple, sensitive and selective method of high-performance liquid chromatography （HPLC） has been successfully developed for separation of bavachinin enantiomers in Fructus Psoraleae and rat plasma. The separation and detection conditions of HPLC were optimized. Chiral bavachinin were separated with the mobile phase of methanol and water （70：30, v/v） at a flow rate of 1.0 mL/min. The linear ranges were in the range of 20-1000 μg/mL. The detection limits were tested as 4 ng/mL and 6 ng/mL for （＋）-bavachinin and （-）-bavachinin, respectively. The method has been applied to analyze chiral bavachinin in rat plasma. HPLC-MS method was used to test the accuracy.
基金This work was funded by the National Natural Science Foundation of China （30890143）, the Key Program for International S＆T Cooperation Projects of China （2010DFB34000） and the National Basic Research Grant of China （2010CB529104） to ZY.
文摘Asthmatic inflammation is mediated by a type 2 helper T cell （Th2） cytokine response, and blocking Th2 cytokine production is proven to have a potent therapeutic effect against asthmatic inflammation. Using IL-4-green fluorescent protein （GFP） reporter mice, we demonstrated that Bavachinin, a single compound isolated from a Chinese herb, significantly inhibited Th2 cytokine production, including IL-4, IL-5 and IL-13. Notably, this compound almost completely blocked inflammation in the ovalbumin （OVA）-sensitized animal asthma model. Furthermore, we demonstrated that this chemical selectively affects the level of GATA-3, most likely by affecting the stability of GATA-3 mRNA. Our results demonstrate, for the first time, the potential therapeutic value of this single compound derived from Chinese herbs.
