目的:探讨茯苓提取物对高脂饮食致肠道菌群失调小鼠的影响。方法:昆明种(KM)小鼠按体质量随机分为对照组、模型组和茯苓不同提取物(醇提取、水提取和碱提取部位)处理组。利用高脂饮食制备小鼠肠道菌群失调模型,给予茯苓不同提取物后,检...目的:探讨茯苓提取物对高脂饮食致肠道菌群失调小鼠的影响。方法:昆明种(KM)小鼠按体质量随机分为对照组、模型组和茯苓不同提取物(醇提取、水提取和碱提取部位)处理组。利用高脂饮食制备小鼠肠道菌群失调模型,给予茯苓不同提取物后,检测小鼠体质量及血清中高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、三酰甘油(TG)及总胆固醇(TC)水平;苏木-伊红(HE)染色法检测小鼠肝和肠组织病理学形态;结合16 S rRNA测序,探究茯苓不同提取物对小鼠肠道菌群结构的影响。结果:茯苓提取物可在一定程度减缓高脂饮食诱导的小鼠体质量增加,改善4项血脂指标水平,减轻高脂饮食对肝和肠组织的损伤,并可不同程度降低厚壁菌门(Firmicutes)相对丰度,提高拟杆菌门(Bacteroidetes)相对丰度。结论:茯苓提取物具有改善肥胖、调节血脂代谢及调整肠道菌群结构的作用。展开更多
Objective:Poria cocos and Polyporus umbellatus are similar medicinal fungi in traditional Chinese medicines.A method for fingerprint analysis of monosaccharide composition of polysaccharides by HPLC combined with chem...Objective:Poria cocos and Polyporus umbellatus are similar medicinal fungi in traditional Chinese medicines.A method for fingerprint analysis of monosaccharide composition of polysaccharides by HPLC combined with chemometrics methods has been developed for characterization and discrimination of them in this research.Methods:The polysaccharides were extracted by decocting in water,and then completely hydrolyzed with hydrochloride.Monosaccharides in the hydrolyzates were derivatized with 1-phenyl-3-methyl-5-pyrazolone(PMP)for HPLC analysis.More than 20 batches of P.cocos and P.umbellatus from different regions were analyzed.Results:The fingerprints of P.cocos showed five common characteristic peaks,which were identified by comparing with the reference substances.The five peaks corresponded to the derivatives of mannose,ribose,glucose,galactose,and fucose.At the same time,the fingerprints of P.umbellatus showed eight common characteristic peaks,of which seven were identified as the derivatives of mannose,ribose,rhamnose,glucose,galactose,xylose,and fucose.Moreover,the similarity of their fingerprints was respectively calculated by the Similarity Evaluation System for Chromatographic Fingerprint of TCM published by China Pharmacopoeia Committee(Version 2004 A).And the data were further processed by hierarchical cluster analysis(HCA)and principal component analysis(PCA).The similarity evaluation and HCA indicated that there were no significant difference in P.cocos or P.umbellatus samples from different geographical regions,but PCA was performed to characterize the difference in monosaccharide constituents between P.cocos and P.umbellatus,and linear discriminant analysis(LDA)showed the overall correct classification rate was 100%.Conclusion:The fingerprint analysis method of monosaccharide composition of water-soluble polysaccharides can distinguish P.cocos and P.umbellatus,and can be applied for the authentication or quality control for P.cocos and P.umbellatus.展开更多
文摘目的:探讨茯苓提取物对高脂饮食致肠道菌群失调小鼠的影响。方法:昆明种(KM)小鼠按体质量随机分为对照组、模型组和茯苓不同提取物(醇提取、水提取和碱提取部位)处理组。利用高脂饮食制备小鼠肠道菌群失调模型,给予茯苓不同提取物后,检测小鼠体质量及血清中高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、三酰甘油(TG)及总胆固醇(TC)水平;苏木-伊红(HE)染色法检测小鼠肝和肠组织病理学形态;结合16 S rRNA测序,探究茯苓不同提取物对小鼠肠道菌群结构的影响。结果:茯苓提取物可在一定程度减缓高脂饮食诱导的小鼠体质量增加,改善4项血脂指标水平,减轻高脂饮食对肝和肠组织的损伤,并可不同程度降低厚壁菌门(Firmicutes)相对丰度,提高拟杆菌门(Bacteroidetes)相对丰度。结论:茯苓提取物具有改善肥胖、调节血脂代谢及调整肠道菌群结构的作用。
基金supported by Shanghai Biotechnology Support Project(Grant No.16401900800)National Science and Technology Project(Grant No.2018ZX09721003-009-011).
文摘Objective:Poria cocos and Polyporus umbellatus are similar medicinal fungi in traditional Chinese medicines.A method for fingerprint analysis of monosaccharide composition of polysaccharides by HPLC combined with chemometrics methods has been developed for characterization and discrimination of them in this research.Methods:The polysaccharides were extracted by decocting in water,and then completely hydrolyzed with hydrochloride.Monosaccharides in the hydrolyzates were derivatized with 1-phenyl-3-methyl-5-pyrazolone(PMP)for HPLC analysis.More than 20 batches of P.cocos and P.umbellatus from different regions were analyzed.Results:The fingerprints of P.cocos showed five common characteristic peaks,which were identified by comparing with the reference substances.The five peaks corresponded to the derivatives of mannose,ribose,glucose,galactose,and fucose.At the same time,the fingerprints of P.umbellatus showed eight common characteristic peaks,of which seven were identified as the derivatives of mannose,ribose,rhamnose,glucose,galactose,xylose,and fucose.Moreover,the similarity of their fingerprints was respectively calculated by the Similarity Evaluation System for Chromatographic Fingerprint of TCM published by China Pharmacopoeia Committee(Version 2004 A).And the data were further processed by hierarchical cluster analysis(HCA)and principal component analysis(PCA).The similarity evaluation and HCA indicated that there were no significant difference in P.cocos or P.umbellatus samples from different geographical regions,but PCA was performed to characterize the difference in monosaccharide constituents between P.cocos and P.umbellatus,and linear discriminant analysis(LDA)showed the overall correct classification rate was 100%.Conclusion:The fingerprint analysis method of monosaccharide composition of water-soluble polysaccharides can distinguish P.cocos and P.umbellatus,and can be applied for the authentication or quality control for P.cocos and P.umbellatus.
