【目的】观察大黄牡丹汤对肠道菌群结构及功能的影响。【方法】分别采用16S r DNA测序法、平板计数法和气相色谱法考察大黄牡丹汤对肠道菌群及其分泌短链脂肪酸(short-chain fatty acids,SCFAs)功能的影响。【结果】16S r DNA测序结果...【目的】观察大黄牡丹汤对肠道菌群结构及功能的影响。【方法】分别采用16S r DNA测序法、平板计数法和气相色谱法考察大黄牡丹汤对肠道菌群及其分泌短链脂肪酸(short-chain fatty acids,SCFAs)功能的影响。【结果】16S r DNA测序结果表明拟杆菌属、埃希菌属细菌明显减少,乳杆菌属、乳球菌属、变形菌属细菌增多。平板计数结果表明大黄牡丹汤能显著抑制脆弱拟杆菌体外增殖(P<0.001)。气相色谱法检测结果表明大黄牡丹汤可显著抑制SCFAs的分泌(P<0.05或P<0.01或P<0.001)。【结论】肠道菌群及其代谢产物可能是大黄牡丹汤发挥药效的靶点。展开更多
OBJECTIVE: To study the daily administration times of Canhuang tablet(CHT) for treating jaundice in rats based on a pharmacodynamic/ pharmacokinetic model.METHODS: Rats were modeled by 4% 1-Naphthylisothiocyanate(75 m...OBJECTIVE: To study the daily administration times of Canhuang tablet(CHT) for treating jaundice in rats based on a pharmacodynamic/ pharmacokinetic model.METHODS: Rats were modeled by 4% 1-Naphthylisothiocyanate(75 mg/kg, p.o.). After 48 h, CHT was given(p.o.) at 0.75 g/kg once a day, 0.375 g/kg twice a day, and 0.25 g/kg three times a day. Blood was collected from the orbital sinus at different intervals. Levels of liver enzymes and bilirubin were detected using these blood samples. Bile was collected and determined after the first administration of CHT. High-performance liquid chromatography was used to determine the concentration of berberine in bile simultaneously. Time-effect and time-dose curves were then obtained.RESULTS: Compared with rats taking CHT twiceand three times a day, the total amount of bile within 10 h of rats taking CHT once a day were 1.32-and 1.47-fold higher, respectively. There was good consistency between the pharmacokinetics of berberine and the pharmacodynamics of the effect on liver enzymes and bilirubin in vivo. The pharmacokinetic analyses showed that rats administered CHT once daily maintained a higher concentration of berberine in bile for a longer period than rats administered CHT two- and three-times daily.CONCLUSION: In jaundiced rats, taking CHT once a day is better than taking CHT twice or three times a day. These data may provide a reference for the clinical application of CHT.展开更多
文摘【目的】观察大黄牡丹汤对肠道菌群结构及功能的影响。【方法】分别采用16S r DNA测序法、平板计数法和气相色谱法考察大黄牡丹汤对肠道菌群及其分泌短链脂肪酸(short-chain fatty acids,SCFAs)功能的影响。【结果】16S r DNA测序结果表明拟杆菌属、埃希菌属细菌明显减少,乳杆菌属、乳球菌属、变形菌属细菌增多。平板计数结果表明大黄牡丹汤能显著抑制脆弱拟杆菌体外增殖(P<0.001)。气相色谱法检测结果表明大黄牡丹汤可显著抑制SCFAs的分泌(P<0.05或P<0.01或P<0.001)。【结论】肠道菌群及其代谢产物可能是大黄牡丹汤发挥药效的靶点。
基金Supported by the Shibingshiyao Program of Beijing Municipal Science and Technology Commission(No.Z131100002513005)
文摘OBJECTIVE: To study the daily administration times of Canhuang tablet(CHT) for treating jaundice in rats based on a pharmacodynamic/ pharmacokinetic model.METHODS: Rats were modeled by 4% 1-Naphthylisothiocyanate(75 mg/kg, p.o.). After 48 h, CHT was given(p.o.) at 0.75 g/kg once a day, 0.375 g/kg twice a day, and 0.25 g/kg three times a day. Blood was collected from the orbital sinus at different intervals. Levels of liver enzymes and bilirubin were detected using these blood samples. Bile was collected and determined after the first administration of CHT. High-performance liquid chromatography was used to determine the concentration of berberine in bile simultaneously. Time-effect and time-dose curves were then obtained.RESULTS: Compared with rats taking CHT twiceand three times a day, the total amount of bile within 10 h of rats taking CHT once a day were 1.32-and 1.47-fold higher, respectively. There was good consistency between the pharmacokinetics of berberine and the pharmacodynamics of the effect on liver enzymes and bilirubin in vivo. The pharmacokinetic analyses showed that rats administered CHT once daily maintained a higher concentration of berberine in bile for a longer period than rats administered CHT two- and three-times daily.CONCLUSION: In jaundiced rats, taking CHT once a day is better than taking CHT twice or three times a day. These data may provide a reference for the clinical application of CHT.
