Objective To predict the total flavonoids concentration of Aurantii Fructus fried with bran in its extraction process. Methods Ultraviolet spectrophotometry was used to determine the concentration of total flavonoids ...Objective To predict the total flavonoids concentration of Aurantii Fructus fried with bran in its extraction process. Methods Ultraviolet spectrophotometry was used to determine the concentration of total flavonoids in different extraction time （t） and solvent load （M）. Then the predicted procedure was carried out using the following data： 1 ） based on Ficks second law, the parameters of the kinetic model could be deduced and the equation was established; 2） Locally weighted regression （LWR） code was developed in the WEKA software environment to predict the concentration. And then we used both methods to predict the concentration of total flavonoids in new experiments. Results After comparing the predicted results with the experimental data, the LWR model had better accuracy and performance in the prediction. Conclusion LWR is applied to analyze the extraction process of Chinese herb for the first time, and it is totally fit for the extraction. LWR-based system is a more simple and accurate way to predict than the established equation. It is a good choice especially for a process which exists no clear rules, and can be used in the real-time control during the process.展开更多
Objective: To compare the pharmacokinetics of naringin and neohesperidin after oral administration of Zhishi total flavonoid glycosides(ZSTFG) extracted from Aurantii Fructus Immaturus in normal and gastrointestinal m...Objective: To compare the pharmacokinetics of naringin and neohesperidin after oral administration of Zhishi total flavonoid glycosides(ZSTFG) extracted from Aurantii Fructus Immaturus in normal and gastrointestinal motility disorders(GMD) mice.Methods: ZSTFG was orally given to normal and GMD mice induced by atropine or dopamine. The plasma samples were incubated with β-glucuronidase/sulfatase, the total(free + conjugated) naringenin and hesperitin were extracted with acetonitrile. The validated HPLC-MS/MS method was successfully applied to the pharmacokinetic study.Results: The results showed that, compared with the normal group, AUC0–∞, AUC0–tand Cmaxfor total naringenin and hesperitin were significantly higher(P < 0.01 or P < 0.05), while CLZ/F for total naringenin and hesperitin was significantly lower(P < 0.01) in the GMD group. Tmax, t1/2 z, MRT0-t, and MRT0-∞for naringenin were longer(P < 0.01) in the GMD group than those in the normal group.Conclusion: The results showed that there were significant differences in pharmacokinetic parameters of naringenin and hesperitin between normal and GMD groups. It was suggested that the absorption of naringenin and hesperitin was increased, and the elimination processes of naringenin and hesperitin were slower in the GMD group than the normal group. The data are of value for further pharmacological studies of ZSTFG and would be useful to provide a reference for improving the therapeutic regimen of ZSTFG in clinical trials.展开更多
目的研究衢枳壳黄酮(pure total flavonoids from Qu Aurantii Fructus,PTFC)对高脂血症金黄地鼠降血脂作用并初步探讨其潜在机制。方法 48只金黄地鼠随机分为6组(n=8):正常组,模型组,非诺贝特阳性对照组(100 mg·kg-1·d-1),P...目的研究衢枳壳黄酮(pure total flavonoids from Qu Aurantii Fructus,PTFC)对高脂血症金黄地鼠降血脂作用并初步探讨其潜在机制。方法 48只金黄地鼠随机分为6组(n=8):正常组,模型组,非诺贝特阳性对照组(100 mg·kg-1·d-1),PTFC低、中、高剂量组(25,50,100 mg·kg-1·d-1)。高脂饮食喂养金黄地鼠6周,并于第3周起同时给予药物灌胃干预,连续干预4周。高脂饲料喂养造模6周末,处死大鼠,称量大鼠体质量及肝脏质量计算肝脏指数,生化法及ELISA法检测血清生化及炎症指标,血清及肝组织MDA含量和SOD活性。HE染色检测肝脏组织病理学改变,qRT-PCR及Westernblotting检测肝脏及脂肪组织PPAR-α、PPAR-γ的mRNA及蛋白表达。结果与高脂血症模型组金黄地鼠相比,PTFC中、高剂量组的金黄地鼠血清TC、TG、LDL-c、IL-6、TNF-α水平显著下降(P<0.05或P<0.01);PTFC高剂量组血清ALT、AST、GLU水平均明显下降(P<0.05或P<0.01);PTFC低、中、高剂量组金黄地鼠的血清、肝脏SOD活性均显著增强,MDA含量则显著降低(P<0.01)。HE染色显示,与模型组比较,各用药组金黄地鼠的肝脂肪变性均得到不同程度的改善。qRT-PCR和Western blotting检测结果显示,与模型组相比,PTFC给药低、中、高剂量组金黄地鼠肝脏和脂肪中PPAR-α、PPAR-γ的mRNA和蛋白表达水平也显著升高(P<0.05或P<0.01)。结论 PTFC能够起到降低血脂的作用,其可能是通过改善脂质水平,降低氧化应激和炎症反应,激活PPAR-α、PPAR-γ来实现对高脂血症金黄地鼠脂质代谢的改善作用。展开更多
基金National Nature Science Foundation of China(surface project)(81173563)
文摘Objective To predict the total flavonoids concentration of Aurantii Fructus fried with bran in its extraction process. Methods Ultraviolet spectrophotometry was used to determine the concentration of total flavonoids in different extraction time （t） and solvent load （M）. Then the predicted procedure was carried out using the following data： 1 ） based on Ficks second law, the parameters of the kinetic model could be deduced and the equation was established; 2） Locally weighted regression （LWR） code was developed in the WEKA software environment to predict the concentration. And then we used both methods to predict the concentration of total flavonoids in new experiments. Results After comparing the predicted results with the experimental data, the LWR model had better accuracy and performance in the prediction. Conclusion LWR is applied to analyze the extraction process of Chinese herb for the first time, and it is totally fit for the extraction. LWR-based system is a more simple and accurate way to predict than the established equation. It is a good choice especially for a process which exists no clear rules, and can be used in the real-time control during the process.
基金Jiangxi Qingfeng Pharmaceutical Co., Ltd. for financial support
文摘Objective: To compare the pharmacokinetics of naringin and neohesperidin after oral administration of Zhishi total flavonoid glycosides(ZSTFG) extracted from Aurantii Fructus Immaturus in normal and gastrointestinal motility disorders(GMD) mice.Methods: ZSTFG was orally given to normal and GMD mice induced by atropine or dopamine. The plasma samples were incubated with β-glucuronidase/sulfatase, the total(free + conjugated) naringenin and hesperitin were extracted with acetonitrile. The validated HPLC-MS/MS method was successfully applied to the pharmacokinetic study.Results: The results showed that, compared with the normal group, AUC0–∞, AUC0–tand Cmaxfor total naringenin and hesperitin were significantly higher(P < 0.01 or P < 0.05), while CLZ/F for total naringenin and hesperitin was significantly lower(P < 0.01) in the GMD group. Tmax, t1/2 z, MRT0-t, and MRT0-∞for naringenin were longer(P < 0.01) in the GMD group than those in the normal group.Conclusion: The results showed that there were significant differences in pharmacokinetic parameters of naringenin and hesperitin between normal and GMD groups. It was suggested that the absorption of naringenin and hesperitin was increased, and the elimination processes of naringenin and hesperitin were slower in the GMD group than the normal group. The data are of value for further pharmacological studies of ZSTFG and would be useful to provide a reference for improving the therapeutic regimen of ZSTFG in clinical trials.
