The aim of this study is to investigate the protective effects of a small molecular fraction(SMF) of Polygoni multiflori Radix Praeparata(PMRP) in a cyclophosphamide(CTX) induced anemia mouse model. Small molecular fr...The aim of this study is to investigate the protective effects of a small molecular fraction(SMF) of Polygoni multiflori Radix Praeparata(PMRP) in a cyclophosphamide(CTX) induced anemia mouse model. Small molecular fraction of PMRP was prepared and identified by high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry(HPLC-Q-TOF-MS). In pharmacology, we examined the peripheral hemogram and thymus and spleen index. The content of granulocyte-macrophage colony-stimulating factor(GM-CSF) in serum was mensurated by enzyme-linked immunosorbent assay(ELISA);The level of superoxide dismutase(SOD), catalase(CAT), total antioxidant capacity(T-AOC), and malondialdehyde(MDA) in serum and spleen tissue homogenate were detected, and glutathione peroxidase(GSH-PX) was assayed in spleen. The results show that SMF can significantly accelerate the recovery of peripheral hemogram, increase the activity of antioxidant enzymes and GM-CSF in serum and spleen. SMF also increases the number of spleen cells, improves bone marrow pathology. In conclusion, the SMF of PMRP promoted the recovery of hematopoietic function in a CTX-induced anemia mouse, which can support SMF to be used as an adjunct to chemotherapy to counteract its side effects.展开更多
Objective: In this study, the hepatotoxic components of Polygoni multiflori Radix and Polygoni multiflori Radix Praeparata(known as Heshouwu [HSW] and Zhiheshouwu [ZHSW] in China, respectively) were screened, isolated...Objective: In this study, the hepatotoxic components of Polygoni multiflori Radix and Polygoni multiflori Radix Praeparata(known as Heshouwu [HSW] and Zhiheshouwu [ZHSW] in China, respectively) were screened, isolated, and identified. Materials and Methods: The ethanol extracts of HSW and ZHSW were separated into 80 fractions according to their polarity in the preparation liquid phase. Chang liver cell line was used to screen the toxic components of HSW and ZHSW in vitro. The obtained toxic mixture was further collected, isolated, and identified to confirm the hepatotoxic compounds of HSW and ZHSW. Results: The identifid hepatotoxic compounds include 2,3,5,4’-tetrah ydroxystilbene-2-O-β-D-glucoside, emodin, physcion-8-O-β-d-glucoside, physcion, and citreorosein, the fist two among them were the main components of HSW and ZHSW. After processing of HSW, the contents of 2,3,5,4’-tetrahydroxystilbene-2-O-β-D-glucoside and emodin in ZHSW were signifiantly decreased. Conclusions: The traditional processing with herb has signifiant effects on the components, especially the toxic components, in the extract of HSW and is an effective method to reduce its toxicity.展开更多
Objectives: Radix Polygoni Multiflori Praeparata (RPMP) and Dioscorea Bulbifera Rhizomes (DBR) are used in Chinese herbal medicine and have been frequently reported for adverse reactions on liver. In this research, we...Objectives: Radix Polygoni Multiflori Praeparata (RPMP) and Dioscorea Bulbifera Rhizomes (DBR) are used in Chinese herbal medicine and have been frequently reported for adverse reactions on liver. In this research, we aimed to evaluate in vivo effects of RPMP and DBR on rat cytochrome P450 enzymes (CYP1A2, CYP2E1 and CYP3A2) with their respective substrates as probes. Methods: Rats were orally administered RPMP, DBR and RPMP/DBR combination at 12, 10 and (12 + 10) g/kg, respectively, or saline as a control, once daily for 7 days. Thereafter, a cocktail containing 10 mg/kg caffeine, 20 mg/kg chlorzoxazone and 10 mg/kg dapsone was tail vein injected to rats. At defined time points, plasma drug concentrations were simultaneously evaluated by HPLC. Pharmacokinetic parameters simulated by DAS software were used to assess RPMP and/or DBR effects on cytochrome P450 enzymes activity. ANOVA and Dunnett’s test were used for data analysis. Results: Caffeine metabolism was enhanced in RPMP animals and reduced after pretreatment with DBR, but no effect was observed in RPMP/DBR combination group. Chlorzoxazone and dapsone metabolism was enhanced in both RPMP and DBR groups and consequently in combination group. The data suggested that RPMP independently induces rat CYP1A2, CYP2E1 and CYP3A2 activity, while DBR independently inhibits activity of rat CYP1A2 and induces that of CYP2E1 and CYP3A2. RPMP/DBR combination showed no significant benefit compared with the two drugs alone and even showed a neutralized effect in CYP1A2 activity. Conclusions: Caution is needed when RPMP and/or DBR are co-administered with drugs metabolized by human CYP1A2, CYP2E1 and CYP3A4.展开更多
目的应用网络药理学方法预测何首乌-丹参抗阿尔茨海默病(AD)的作用靶点及相关信号通路,挖掘其抗AD的作用机制。方法通过中药系统药理学技术平台(TCMSP)网站检索何首乌-丹参的活性成分及对应的作用靶点,再通过Drugbank数据库、Dis Ge NE...目的应用网络药理学方法预测何首乌-丹参抗阿尔茨海默病(AD)的作用靶点及相关信号通路,挖掘其抗AD的作用机制。方法通过中药系统药理学技术平台(TCMSP)网站检索何首乌-丹参的活性成分及对应的作用靶点,再通过Drugbank数据库、Dis Ge NET数据库和TTD数据库获得AD的主要致病靶点,采用Cytoscape 3.7.1软件构建药物活性成分-靶点网络图,利用STRING数据库构建蛋白与蛋白相互作用网络,然后运用生物信息学的方法对关键靶点进行基因功能分析和通路富集分析,最后采用MTT法、ELISA法、比色法和实时荧光定量PCR法对网络药理学主要预测的生物过程与信号通路进行验证。结果研究共筛选出何首乌-丹参药对的有效成分24个,对应靶点274个,与AD相关靶点共107个,相关信号通路前10条,GO分析相关度前20个靶点分子功能。细胞实验证实了何首乌-丹参能有效提高PC12细胞的细胞存活率及抑制PC12细胞的炎症反应和氧化应激反应,并促进Nrf2/HO-1信号通路的激活。结论何首乌-丹参主要是通过抗炎和抗氧化应激对AD产生重要的治疗作用,为后续临床治疗AD提供新的思路。展开更多
目的建立补肝益肾颗粒质量标准。方法采用TLC法对方中淫羊藿、白芍及制何首乌进行定性鉴别;HPLC法同时对淫羊藿苷、川续断皂苷Ⅵ进行定量测定,使用phenomenex Luna Omega Polar C 18(4.6 mm×250 mm,5μm)色谱柱,流动相:乙腈-水梯...目的建立补肝益肾颗粒质量标准。方法采用TLC法对方中淫羊藿、白芍及制何首乌进行定性鉴别;HPLC法同时对淫羊藿苷、川续断皂苷Ⅵ进行定量测定,使用phenomenex Luna Omega Polar C 18(4.6 mm×250 mm,5μm)色谱柱,流动相:乙腈-水梯度洗脱,流速:1.0 mL/min,柱温:25℃,检测波长:212 nm,进样量:10μL。结果薄层色谱鉴别斑点清晰,专属性强,无干扰;淫羊藿苷、川续断皂苷Ⅵ分别在0.3184~10.1900μg、0.1422~4.5500μg范围内,进样量与峰面积线性关系良好(r 1=0.9999,r 2=0.9999),平均加样回收率分别为99.82%、100.70%,RSD值为1.09%、0.88%(n=9)。结论本法简便、准确、重复性好,可为补肝益肾颗粒的质量控制提供实验依据。展开更多
文摘The aim of this study is to investigate the protective effects of a small molecular fraction(SMF) of Polygoni multiflori Radix Praeparata(PMRP) in a cyclophosphamide(CTX) induced anemia mouse model. Small molecular fraction of PMRP was prepared and identified by high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry(HPLC-Q-TOF-MS). In pharmacology, we examined the peripheral hemogram and thymus and spleen index. The content of granulocyte-macrophage colony-stimulating factor(GM-CSF) in serum was mensurated by enzyme-linked immunosorbent assay(ELISA);The level of superoxide dismutase(SOD), catalase(CAT), total antioxidant capacity(T-AOC), and malondialdehyde(MDA) in serum and spleen tissue homogenate were detected, and glutathione peroxidase(GSH-PX) was assayed in spleen. The results show that SMF can significantly accelerate the recovery of peripheral hemogram, increase the activity of antioxidant enzymes and GM-CSF in serum and spleen. SMF also increases the number of spleen cells, improves bone marrow pathology. In conclusion, the SMF of PMRP promoted the recovery of hematopoietic function in a CTX-induced anemia mouse, which can support SMF to be used as an adjunct to chemotherapy to counteract its side effects.
文摘Objective: In this study, the hepatotoxic components of Polygoni multiflori Radix and Polygoni multiflori Radix Praeparata(known as Heshouwu [HSW] and Zhiheshouwu [ZHSW] in China, respectively) were screened, isolated, and identified. Materials and Methods: The ethanol extracts of HSW and ZHSW were separated into 80 fractions according to their polarity in the preparation liquid phase. Chang liver cell line was used to screen the toxic components of HSW and ZHSW in vitro. The obtained toxic mixture was further collected, isolated, and identified to confirm the hepatotoxic compounds of HSW and ZHSW. Results: The identifid hepatotoxic compounds include 2,3,5,4’-tetrah ydroxystilbene-2-O-β-D-glucoside, emodin, physcion-8-O-β-d-glucoside, physcion, and citreorosein, the fist two among them were the main components of HSW and ZHSW. After processing of HSW, the contents of 2,3,5,4’-tetrahydroxystilbene-2-O-β-D-glucoside and emodin in ZHSW were signifiantly decreased. Conclusions: The traditional processing with herb has signifiant effects on the components, especially the toxic components, in the extract of HSW and is an effective method to reduce its toxicity.
文摘Objectives: Radix Polygoni Multiflori Praeparata (RPMP) and Dioscorea Bulbifera Rhizomes (DBR) are used in Chinese herbal medicine and have been frequently reported for adverse reactions on liver. In this research, we aimed to evaluate in vivo effects of RPMP and DBR on rat cytochrome P450 enzymes (CYP1A2, CYP2E1 and CYP3A2) with their respective substrates as probes. Methods: Rats were orally administered RPMP, DBR and RPMP/DBR combination at 12, 10 and (12 + 10) g/kg, respectively, or saline as a control, once daily for 7 days. Thereafter, a cocktail containing 10 mg/kg caffeine, 20 mg/kg chlorzoxazone and 10 mg/kg dapsone was tail vein injected to rats. At defined time points, plasma drug concentrations were simultaneously evaluated by HPLC. Pharmacokinetic parameters simulated by DAS software were used to assess RPMP and/or DBR effects on cytochrome P450 enzymes activity. ANOVA and Dunnett’s test were used for data analysis. Results: Caffeine metabolism was enhanced in RPMP animals and reduced after pretreatment with DBR, but no effect was observed in RPMP/DBR combination group. Chlorzoxazone and dapsone metabolism was enhanced in both RPMP and DBR groups and consequently in combination group. The data suggested that RPMP independently induces rat CYP1A2, CYP2E1 and CYP3A2 activity, while DBR independently inhibits activity of rat CYP1A2 and induces that of CYP2E1 and CYP3A2. RPMP/DBR combination showed no significant benefit compared with the two drugs alone and even showed a neutralized effect in CYP1A2 activity. Conclusions: Caution is needed when RPMP and/or DBR are co-administered with drugs metabolized by human CYP1A2, CYP2E1 and CYP3A4.
文摘目的应用网络药理学方法预测何首乌-丹参抗阿尔茨海默病(AD)的作用靶点及相关信号通路,挖掘其抗AD的作用机制。方法通过中药系统药理学技术平台(TCMSP)网站检索何首乌-丹参的活性成分及对应的作用靶点,再通过Drugbank数据库、Dis Ge NET数据库和TTD数据库获得AD的主要致病靶点,采用Cytoscape 3.7.1软件构建药物活性成分-靶点网络图,利用STRING数据库构建蛋白与蛋白相互作用网络,然后运用生物信息学的方法对关键靶点进行基因功能分析和通路富集分析,最后采用MTT法、ELISA法、比色法和实时荧光定量PCR法对网络药理学主要预测的生物过程与信号通路进行验证。结果研究共筛选出何首乌-丹参药对的有效成分24个,对应靶点274个,与AD相关靶点共107个,相关信号通路前10条,GO分析相关度前20个靶点分子功能。细胞实验证实了何首乌-丹参能有效提高PC12细胞的细胞存活率及抑制PC12细胞的炎症反应和氧化应激反应,并促进Nrf2/HO-1信号通路的激活。结论何首乌-丹参主要是通过抗炎和抗氧化应激对AD产生重要的治疗作用,为后续临床治疗AD提供新的思路。
