目的:通过整合分析甘草抗炎活性与性状特征数据,研究感官评价的科学性。方法:基于核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)炎症小体细胞模型,建立甘草的抗炎生物效价测定方法,根据测定生物效价将采集的甘草样品分级。通过电子鼻、色...目的:通过整合分析甘草抗炎活性与性状特征数据,研究感官评价的科学性。方法:基于核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)炎症小体细胞模型,建立甘草的抗炎生物效价测定方法,根据测定生物效价将采集的甘草样品分级。通过电子鼻、色彩色差仪等采集不同等级甘草样品的性状信息,通过主成分分析(PCA)、正交偏最小二乘法-判别分析(OPLS-DA)分析不同等级甘草的差异性,并进一步考察性状特征与甘草抗炎活性的关联性。结果:实验结果显示,甘草提取物对尼日利亚菌素诱导的小鼠原代骨髓巨噬细胞NLRP3炎症小体的激活具有明显抑制作用,根据甘草的抗炎生物效价,可将10批次甘草分为两个等级,一等甘草的生物效价为5.949~11.418 U·mg^(–1),二等甘草的生物效价为1.575~1.887 U·mg^(–1);PCA结果显示,两等级甘草可以聚成两类;OPLS-DA结果显示,R^(2)X=0.534,R^(2)Y=0.863,Q^(2)=0.75,模型的拟合能力较好,预测能力较强,并且发现色度值b^(*)和断面直径(2R)的变量重要性投影(variable important inprojection,VIP)分别为1.54294、1.26011,均大于1,两者可能是导致两等级甘草药效差异的关键参数,经过实测值比较,两等级甘草在b^(*)上的差异有统计学意义(P<0.01)。结论:研究表明,甘草的b^(*)与甘草抗炎活性具有显著的相关性,是其质量评价的一个重要指标,也佐证了甘草传统评价具有一定的科学性。展开更多
中医药在防治传染病方面具有悠久历史和丰富经验。在抗击新型冠状病毒肺炎(以下简称新冠肺炎)过程中,中医药发挥了不可替代的重要作用,包括“三方三药”在内的系列中药在防控新冠肺炎疫情过程中体现出明确疗效。笔者团队在第一时间开展...中医药在防治传染病方面具有悠久历史和丰富经验。在抗击新型冠状病毒肺炎(以下简称新冠肺炎)过程中,中医药发挥了不可替代的重要作用,包括“三方三药”在内的系列中药在防控新冠肺炎疫情过程中体现出明确疗效。笔者团队在第一时间开展新冠肺炎中西医结合救治工作,建立了融辨病论治、辨证论治与辨靶论治于一体的中医药科学组方创新模式——系统辨靶论治(target-combined holistic treatment of TCM),成功研制出了可有效阻断新冠肺炎重症化的中医药“克冠一号”,同时提出了中医药抗击新冠肺炎“攘外安内”学说,并探索建立了一套中医药防治新突发传染病临床科研攻关模式。为抗击新冠肺炎疫情提供了中医药解决方案。展开更多
Objective:To assess the risk of aristolochic acid(AA)-associated cancer in patients with AA nephropathy(AAN).Methods:A retrospective study was conducted on patients diagnosed with AAN at Peking University First Hospit...Objective:To assess the risk of aristolochic acid(AA)-associated cancer in patients with AA nephropathy(AAN).Methods:A retrospective study was conducted on patients diagnosed with AAN at Peking University First Hospital from January 1997 to December 2014.Long-term surveillance and follow-up data were analyzed to investigate the influence of different factors on the prevalence of cancer.The primary endpoint was the incidence of liver cancer,and the secondary endpoint was the incidence of urinary cancer during 1 year after taking AA-containing medication to 2014.Results:A total of 337 patients diagnosed with AAN were included in this study.From the initiation of taking AA to the termination of follow-up,39 patients were diagnosed with cancer.No cases of liver cancer were observed throughout the entire follow-up period,with urinary cancer being the predominant type(34/39,87.17%).Logistic regression analysis showed that age,follow-up period,and diabetes were potential risk factors,however,the dosage of the drug was not significantly associated with urinary cancer.Conclusions:No cases of liver cancer were observed at the end of follow-up.However,a high prevalence of urinary cancer was observed in AAN patients.Establishing a direct causality between AA and HCC is challenging.展开更多
依据补骨脂“性本大燥”的药性理论,寻找补骨脂致肝损伤的易感证候及生物标志物。分别构建肾阴虚证、肾阳虚大鼠模型,所有动物实验操作和福利均遵循河南中医药大学第一附属实验动物伦理与动物福利委员会的规定(批号YFYDW2020017)。结果...依据补骨脂“性本大燥”的药性理论,寻找补骨脂致肝损伤的易感证候及生物标志物。分别构建肾阴虚证、肾阳虚大鼠模型,所有动物实验操作和福利均遵循河南中医药大学第一附属实验动物伦理与动物福利委员会的规定(批号YFYDW2020017)。结果发现补骨脂可显著降低肾阴虚证大鼠体质量、饮水量、尿量,并增加其肝、睾丸、肾上腺、脾脏脏器指数及谷丙转氨酶(alanine aminotransferase,ALT)表达;同时,补骨脂还显著增加了肾阳虚证大鼠尿量,并降低ALT、天冬氨酸氨基转移酶(aspartate aminotransferase,AST)表达;苏木素-伊红(hematoxylin and eosin,HE)染色显示补骨脂明显加剧肾阴虚证大鼠肝细胞炎症浸润,并减轻肾阳虚证大鼠肝损伤。超高效液相色谱-质谱(ultra-performance liquid chromatography-tandem mass spectrometry,UPLC-MS)检测血浆后共鉴定出17个补骨脂共同调控肾阴/阳虚证大鼠的具有显著差异的内源性代谢标志物。其中,谷氨酰胺、喹啉酸、胆绿素、乳糖基酰基鞘氨醇等8个代谢物呈相反变化趋势,主要涉及半胱氨酸和蛋氨酸代谢、酪氨酸代谢、色氨酸代谢、嘌呤代谢、鞘脂代谢、甘油磷脂代谢、谷氨酰胺代谢等通路。因此,本研究推测肾阴虚证与肾阳虚证可能分别是补骨脂发挥肝损害与肝保护的易感证候,这可能与其调控体内相关氨基酸代谢和鞘脂代谢等有关,可为中医临床补骨脂的安全精准使用提供一定的实验数据支撑。展开更多
文摘目的:通过整合分析甘草抗炎活性与性状特征数据,研究感官评价的科学性。方法:基于核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)炎症小体细胞模型,建立甘草的抗炎生物效价测定方法,根据测定生物效价将采集的甘草样品分级。通过电子鼻、色彩色差仪等采集不同等级甘草样品的性状信息,通过主成分分析(PCA)、正交偏最小二乘法-判别分析(OPLS-DA)分析不同等级甘草的差异性,并进一步考察性状特征与甘草抗炎活性的关联性。结果:实验结果显示,甘草提取物对尼日利亚菌素诱导的小鼠原代骨髓巨噬细胞NLRP3炎症小体的激活具有明显抑制作用,根据甘草的抗炎生物效价,可将10批次甘草分为两个等级,一等甘草的生物效价为5.949~11.418 U·mg^(–1),二等甘草的生物效价为1.575~1.887 U·mg^(–1);PCA结果显示,两等级甘草可以聚成两类;OPLS-DA结果显示,R^(2)X=0.534,R^(2)Y=0.863,Q^(2)=0.75,模型的拟合能力较好,预测能力较强,并且发现色度值b^(*)和断面直径(2R)的变量重要性投影(variable important inprojection,VIP)分别为1.54294、1.26011,均大于1,两者可能是导致两等级甘草药效差异的关键参数,经过实测值比较,两等级甘草在b^(*)上的差异有统计学意义(P<0.01)。结论:研究表明,甘草的b^(*)与甘草抗炎活性具有显著的相关性,是其质量评价的一个重要指标,也佐证了甘草传统评价具有一定的科学性。
文摘中医药在防治传染病方面具有悠久历史和丰富经验。在抗击新型冠状病毒肺炎(以下简称新冠肺炎)过程中,中医药发挥了不可替代的重要作用,包括“三方三药”在内的系列中药在防控新冠肺炎疫情过程中体现出明确疗效。笔者团队在第一时间开展新冠肺炎中西医结合救治工作,建立了融辨病论治、辨证论治与辨靶论治于一体的中医药科学组方创新模式——系统辨靶论治(target-combined holistic treatment of TCM),成功研制出了可有效阻断新冠肺炎重症化的中医药“克冠一号”,同时提出了中医药抗击新冠肺炎“攘外安内”学说,并探索建立了一套中医药防治新突发传染病临床科研攻关模式。为抗击新冠肺炎疫情提供了中医药解决方案。
基金Supported by National Key Technology R&D Program(No.2018zX09101002-001-002)Innovation Team and Talents Cultivation Program of National Administration of Traditional Chinese Medicine(No.ZYYCXTD-C-202005)the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality(No.KJQN202215119)。
文摘Objective:To assess the risk of aristolochic acid(AA)-associated cancer in patients with AA nephropathy(AAN).Methods:A retrospective study was conducted on patients diagnosed with AAN at Peking University First Hospital from January 1997 to December 2014.Long-term surveillance and follow-up data were analyzed to investigate the influence of different factors on the prevalence of cancer.The primary endpoint was the incidence of liver cancer,and the secondary endpoint was the incidence of urinary cancer during 1 year after taking AA-containing medication to 2014.Results:A total of 337 patients diagnosed with AAN were included in this study.From the initiation of taking AA to the termination of follow-up,39 patients were diagnosed with cancer.No cases of liver cancer were observed throughout the entire follow-up period,with urinary cancer being the predominant type(34/39,87.17%).Logistic regression analysis showed that age,follow-up period,and diabetes were potential risk factors,however,the dosage of the drug was not significantly associated with urinary cancer.Conclusions:No cases of liver cancer were observed at the end of follow-up.However,a high prevalence of urinary cancer was observed in AAN patients.Establishing a direct causality between AA and HCC is challenging.
文摘依据补骨脂“性本大燥”的药性理论,寻找补骨脂致肝损伤的易感证候及生物标志物。分别构建肾阴虚证、肾阳虚大鼠模型,所有动物实验操作和福利均遵循河南中医药大学第一附属实验动物伦理与动物福利委员会的规定(批号YFYDW2020017)。结果发现补骨脂可显著降低肾阴虚证大鼠体质量、饮水量、尿量,并增加其肝、睾丸、肾上腺、脾脏脏器指数及谷丙转氨酶(alanine aminotransferase,ALT)表达;同时,补骨脂还显著增加了肾阳虚证大鼠尿量,并降低ALT、天冬氨酸氨基转移酶(aspartate aminotransferase,AST)表达;苏木素-伊红(hematoxylin and eosin,HE)染色显示补骨脂明显加剧肾阴虚证大鼠肝细胞炎症浸润,并减轻肾阳虚证大鼠肝损伤。超高效液相色谱-质谱(ultra-performance liquid chromatography-tandem mass spectrometry,UPLC-MS)检测血浆后共鉴定出17个补骨脂共同调控肾阴/阳虚证大鼠的具有显著差异的内源性代谢标志物。其中,谷氨酰胺、喹啉酸、胆绿素、乳糖基酰基鞘氨醇等8个代谢物呈相反变化趋势,主要涉及半胱氨酸和蛋氨酸代谢、酪氨酸代谢、色氨酸代谢、嘌呤代谢、鞘脂代谢、甘油磷脂代谢、谷氨酰胺代谢等通路。因此,本研究推测肾阴虚证与肾阳虚证可能分别是补骨脂发挥肝损害与肝保护的易感证候,这可能与其调控体内相关氨基酸代谢和鞘脂代谢等有关,可为中医临床补骨脂的安全精准使用提供一定的实验数据支撑。
