目的:研究红黑二丸提取物对凝血系统的作用,了解其促凝血效应。方法:取小鼠和大鼠随机均分为对照组和红黑二丸组,红黑二丸组灌胃给于红黑二丸提取物l ml/100 g bw,对照组灌胃给于等体积生理盐水,qd,连续给药7 d后,分别测定小鼠出血时间(...目的:研究红黑二丸提取物对凝血系统的作用,了解其促凝血效应。方法:取小鼠和大鼠随机均分为对照组和红黑二丸组,红黑二丸组灌胃给于红黑二丸提取物l ml/100 g bw,对照组灌胃给于等体积生理盐水,qd,连续给药7 d后,分别测定小鼠出血时间(BT)、血凝血时间(CT)、大鼠的活化部分凝血活酶时间(APTT)和凝血酶原时间(PT)、全血浆凝块溶解时间及血小板数(PLT)。结果:与对照组相比,红黑二丸提取物能明显缩短BT,降低CT、APTT和PT。同时,红黑二丸提取物能使全血浆凝块溶解时间延长、血小板数增高。结论:红黑二丸具有明显的促凝血作用。展开更多
Objective: Angelicae Sinensis Radix(ASR, Danggui in Chinese), Cistanches Herba(CH, Roucongrong in Chinese), Ginseng Radix et Rhizoma(PG, Renshen in Chinese), and Panacis Quinquefolii Radix(PQ,Xiyangshen in Chinese), w...Objective: Angelicae Sinensis Radix(ASR, Danggui in Chinese), Cistanches Herba(CH, Roucongrong in Chinese), Ginseng Radix et Rhizoma(PG, Renshen in Chinese), and Panacis Quinquefolii Radix(PQ,Xiyangshen in Chinese), widely used as medicine and dietary supplement around the world, are susceptible to fungal and mycotoxin contamination. In this study, we aim to analyze their fungal community by DNA metabarcoding.Methods: A total of 12 root samples were collected from three main production areas in China. The samples were divided into four groups based on herb species, including ASR, CH, PG, and PQ groups. The fungal community on the surface of four root groups was investigated through DNA metabarcoding via targeting the internal transcribed spacer 2 region(ITS2).Results: All the 12 samples were detected with fungal contamination. Rhizopus(13.04%-74.03%),Aspergillus(1.76%-23.92%), and Fusarium(0.26%-15.27%) were the predominant genera. Ten important fungi were identified at the species level, including two potential toxigenic fungi(Penicillium citrinum and P. oxalicum) and eight human pathogenic fungi(Alternaria infectoria, Candida sake, Hyphopichia burtonii, Malassezia globosa, M. restricta, Rhizopus arrhizus, Rhodotorula mucilaginosa, and Ochroconis tshawytschae). Fungal community in ASR and CH groups was significantly different from other groups,while fungal community in PG and PQ groups was relatively similar.Conclusion: DNA metabarcoding revealed the fungal community in four important root herbs. This study provided an important reference for preventing root herbs against fungal and mycotoxin contamination.展开更多
目的基于化学成分群加和性分子描述符建立中药浸膏粉溶化性预测模型,并进行验证。方法采用原位浊度传感器评价中药浸膏粉溶化性,对测试方法条件进行优化并进行验证;以13种代表性中药(广藿香、当归、薄荷、瞿麦、银柴胡、乌梅、葛根、细...目的基于化学成分群加和性分子描述符建立中药浸膏粉溶化性预测模型,并进行验证。方法采用原位浊度传感器评价中药浸膏粉溶化性,对测试方法条件进行优化并进行验证;以13种代表性中药(广藿香、当归、薄荷、瞿麦、银柴胡、乌梅、葛根、细辛、益母草、苦参、熟地黄、荆芥和川芎)浸膏粉为研究对象,检索每种中药所含化学成分,根据成分的分子描述符计算出每种中药化学成分群平均性质,进而采用偏最小二乘(partial least squares,PLS)法建立该平均性质与对应中药溶液浊度值的关联预测模型并验证。结果中药浸膏粉溶化性客观评价方法的重复性和耐用性良好;对从13种中药中检索得到的1840种成分分子描述符进行主成分分析后,由得分图和载荷图结果可知分子描述符可以区分出溶解度有差异的化学成分类别;随机划分校正集和验证集后,基于化学成分群加和性分子描述符预测溶液浊度值的PLS预测模型的RX_(cum)^(2)=0.873,RY_(cum)^(2)=0.998,Qcum~2=0.869;川芎、荆芥和益母草的浊度预测误差分别为3.4%、9.3%、23.8%。结论基于化学成分群加和性分子描述符的中药浸膏粉溶化性预测模型具有一定的预测能力,研究结果为从中药整体成分层面预测宏观物性提供参考。展开更多
目的采用半定量分析方法对制首乌与9个补虚药配伍后成分含量及DPPH自由基清除能力变化进行研究。方法以UPLC-DAD建立制首乌多成分半定量分析方法,对制首乌与9味常用补虚药(当归、熟地黄、白芍、党参、黄芪、甘草、麦冬、枸杞子、墨旱莲...目的采用半定量分析方法对制首乌与9个补虚药配伍后成分含量及DPPH自由基清除能力变化进行研究。方法以UPLC-DAD建立制首乌多成分半定量分析方法,对制首乌与9味常用补虚药(当归、熟地黄、白芍、党参、黄芪、甘草、麦冬、枸杞子、墨旱莲)配伍后成分含量变化进行分析。采用DPPH法分别测定单味药以及配伍药对的自由基清除能力,绘制量-效曲线并计算半数清除浓度(EC50)。采用多元统计分析方法建立制首乌中多成分含量与DPPH自由基清除能力间的量-效回归模型,筛选量-效关系中影响显著的化学标志物,并通过质谱进行定性分析。结果线性范围、准确度、精密度、重复性及稳定性5项方法学验证结果表明,半定量分析方法可用于制首乌中12个成分在配伍前后的含量对比分析。含量对比分析结果表明,制首乌与不同药物配伍后,12个成分的含量均发生了不同程度的变化,且与墨旱莲配伍后制首乌中有33%的成分含量显著降低(P<0.05)、42%的成分含量显著升高外(P<0.05),与另8味药配伍后制首乌中至少50%的成分含量显著降低(P<0.05)。DPPH自由基清除能力实验结果显示,制首乌DPPH自由基清除能力高于其他9味中药,配伍后9个制首乌药对的DPPH自由基清除能力低于制首乌,但高于相应的配伍药物。量-效回归正交偏最小二乘法(orthogonal projections to latentstructures,OPLS)模型中R2X、R2Y及Q2值分别为0.841、0.981及0.962,筛选出4个量-效关系化学标志物,分别为反式-2,3,5,4′-四羟基二苯乙烯-2-O-β-D-吡喃葡萄糖苷(trans-THSG)、大黄素甲醚、顺式-2,3,5,4′-四羟基二苯乙烯-2-O-β-D-吡喃葡萄糖苷(cis-THSG)、大黄素-8-O-β-D-吡喃葡萄糖苷(EG)。结论建立的多成分半定量分析方法可用于何首乌在药对配伍过程中多成分含量变化的对比分析,trans-THSG、大黄素甲醚、cis-THSG、EG是影响制首乌在上述药对中发挥DPPH自由基清除作用的化学标志物,可为制首乌药对配伍机制的深入研究提供参考。展开更多
文摘目的:研究红黑二丸提取物对凝血系统的作用,了解其促凝血效应。方法:取小鼠和大鼠随机均分为对照组和红黑二丸组,红黑二丸组灌胃给于红黑二丸提取物l ml/100 g bw,对照组灌胃给于等体积生理盐水,qd,连续给药7 d后,分别测定小鼠出血时间(BT)、血凝血时间(CT)、大鼠的活化部分凝血活酶时间(APTT)和凝血酶原时间(PT)、全血浆凝块溶解时间及血小板数(PLT)。结果:与对照组相比,红黑二丸提取物能明显缩短BT,降低CT、APTT和PT。同时,红黑二丸提取物能使全血浆凝块溶解时间延长、血小板数增高。结论:红黑二丸具有明显的促凝血作用。
基金supported by CAMS Innovation Fund for Medical Sciences(CIFMS)(No.2021-I2M-1-071).
文摘Objective: Angelicae Sinensis Radix(ASR, Danggui in Chinese), Cistanches Herba(CH, Roucongrong in Chinese), Ginseng Radix et Rhizoma(PG, Renshen in Chinese), and Panacis Quinquefolii Radix(PQ,Xiyangshen in Chinese), widely used as medicine and dietary supplement around the world, are susceptible to fungal and mycotoxin contamination. In this study, we aim to analyze their fungal community by DNA metabarcoding.Methods: A total of 12 root samples were collected from three main production areas in China. The samples were divided into four groups based on herb species, including ASR, CH, PG, and PQ groups. The fungal community on the surface of four root groups was investigated through DNA metabarcoding via targeting the internal transcribed spacer 2 region(ITS2).Results: All the 12 samples were detected with fungal contamination. Rhizopus(13.04%-74.03%),Aspergillus(1.76%-23.92%), and Fusarium(0.26%-15.27%) were the predominant genera. Ten important fungi were identified at the species level, including two potential toxigenic fungi(Penicillium citrinum and P. oxalicum) and eight human pathogenic fungi(Alternaria infectoria, Candida sake, Hyphopichia burtonii, Malassezia globosa, M. restricta, Rhizopus arrhizus, Rhodotorula mucilaginosa, and Ochroconis tshawytschae). Fungal community in ASR and CH groups was significantly different from other groups,while fungal community in PG and PQ groups was relatively similar.Conclusion: DNA metabarcoding revealed the fungal community in four important root herbs. This study provided an important reference for preventing root herbs against fungal and mycotoxin contamination.
文摘目的基于化学成分群加和性分子描述符建立中药浸膏粉溶化性预测模型,并进行验证。方法采用原位浊度传感器评价中药浸膏粉溶化性,对测试方法条件进行优化并进行验证;以13种代表性中药(广藿香、当归、薄荷、瞿麦、银柴胡、乌梅、葛根、细辛、益母草、苦参、熟地黄、荆芥和川芎)浸膏粉为研究对象,检索每种中药所含化学成分,根据成分的分子描述符计算出每种中药化学成分群平均性质,进而采用偏最小二乘(partial least squares,PLS)法建立该平均性质与对应中药溶液浊度值的关联预测模型并验证。结果中药浸膏粉溶化性客观评价方法的重复性和耐用性良好;对从13种中药中检索得到的1840种成分分子描述符进行主成分分析后,由得分图和载荷图结果可知分子描述符可以区分出溶解度有差异的化学成分类别;随机划分校正集和验证集后,基于化学成分群加和性分子描述符预测溶液浊度值的PLS预测模型的RX_(cum)^(2)=0.873,RY_(cum)^(2)=0.998,Qcum~2=0.869;川芎、荆芥和益母草的浊度预测误差分别为3.4%、9.3%、23.8%。结论基于化学成分群加和性分子描述符的中药浸膏粉溶化性预测模型具有一定的预测能力,研究结果为从中药整体成分层面预测宏观物性提供参考。
文摘目的采用半定量分析方法对制首乌与9个补虚药配伍后成分含量及DPPH自由基清除能力变化进行研究。方法以UPLC-DAD建立制首乌多成分半定量分析方法,对制首乌与9味常用补虚药(当归、熟地黄、白芍、党参、黄芪、甘草、麦冬、枸杞子、墨旱莲)配伍后成分含量变化进行分析。采用DPPH法分别测定单味药以及配伍药对的自由基清除能力,绘制量-效曲线并计算半数清除浓度(EC50)。采用多元统计分析方法建立制首乌中多成分含量与DPPH自由基清除能力间的量-效回归模型,筛选量-效关系中影响显著的化学标志物,并通过质谱进行定性分析。结果线性范围、准确度、精密度、重复性及稳定性5项方法学验证结果表明,半定量分析方法可用于制首乌中12个成分在配伍前后的含量对比分析。含量对比分析结果表明,制首乌与不同药物配伍后,12个成分的含量均发生了不同程度的变化,且与墨旱莲配伍后制首乌中有33%的成分含量显著降低(P<0.05)、42%的成分含量显著升高外(P<0.05),与另8味药配伍后制首乌中至少50%的成分含量显著降低(P<0.05)。DPPH自由基清除能力实验结果显示,制首乌DPPH自由基清除能力高于其他9味中药,配伍后9个制首乌药对的DPPH自由基清除能力低于制首乌,但高于相应的配伍药物。量-效回归正交偏最小二乘法(orthogonal projections to latentstructures,OPLS)模型中R2X、R2Y及Q2值分别为0.841、0.981及0.962,筛选出4个量-效关系化学标志物,分别为反式-2,3,5,4′-四羟基二苯乙烯-2-O-β-D-吡喃葡萄糖苷(trans-THSG)、大黄素甲醚、顺式-2,3,5,4′-四羟基二苯乙烯-2-O-β-D-吡喃葡萄糖苷(cis-THSG)、大黄素-8-O-β-D-吡喃葡萄糖苷(EG)。结论建立的多成分半定量分析方法可用于何首乌在药对配伍过程中多成分含量变化的对比分析,trans-THSG、大黄素甲醚、cis-THSG、EG是影响制首乌在上述药对中发挥DPPH自由基清除作用的化学标志物,可为制首乌药对配伍机制的深入研究提供参考。
