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Background: Cardiac aging progressively decreases physiological function and drives chronic/degenerative aging-related heart diseases. Therefore, it is crucial to postpone the aging process of heart and create products that combat aging. Aims & methods: The objective of this study is to examine the effects of parishin, a phenolic glucoside isolated from traditional Chinese medicine Gastrodia elata, on anti-aging and its underlying mechanism. To assess the senescent biomarkers, cardiac function, cardiac weight/body weight ratio, cardiac transcriptomic changes, and cardiac histopathological features, heart tissue samples were obtained from young mice (12 weeks), aged mice (19 months) treated with parishin, and aged mice that were not treated. Results: Parishin treatment improved cardiac function, ameliorated aging-induced cardiac injury, hypertrophy, and fibrosis, decreased cardiac senescence biomarkers p16Ink4a, p21Cip1, and IL-6, and increased the "longevity factor" SIRT1 expression in heart tissue. Furthermore, the transcriptomic analysis demonstrated that parishin treatment alleviated the cardiac aging-related Gja1 downregulation and Cyp2e1, Ccna2, Cdca3, and Fgf12 upregulation in the heart tissues. The correlation analysis suggested a strong connection between the anti-aging effect of parishin and its regulation of gut microbiota and metabolism in the aged intestine. Conclusion: The present study demonstrates the protective role and underlying mechanism of parishin against cardiac aging in naturally aged mice.
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Objective:To explore the material basis and mechanism of Linggui Zhugan Decoction in treating hypertension and obesity by means of network pharmacology and molecular docking technique.Methods:The TCMSP was retrieved and the main active components and action targets of Linggui Zhugan Decoction were screened. The GeneCards, OMIM, TTD, DisGeNET and DrugBank databases were used to screen disease-related targets of hypertension and obesity. The Cytoscape 3.9.0 was used to draw Chinese materia medica-composition-intersection target-disease network diagram. The STRING 11.5 database was used to draw PPI network. The cytoNCA plug-in was used to screen core active components and targets. The bioenrichment analysis of GO and KEGG was carried out in the R4.1.2, and the Chinese materia medica-intersection target-path diagram was drawn, and the core active components and core targets were docked in PyMOL and AutoDockTools 1.5.7.Results:A total of 102 potentially active components and 62 intersection targets were obtained, and 8 active components and 7 core targets were screened. Enrichment analysis showed that the key targets were mainly enriched through the signaling pathways of fluid shear stress and atherosclerosis, lipid and atherosclerosis, and AGE-RAGE, which were involved in biological processes such as the response to nutritional levels and the regulation of small molecule metabolism. Molecular docking showed that there were 37 groups with addinity < -7 kcal/mol.Conclusion:The main active components of Linggui Zhugan Decoction are quercetin, kaempferol and naringenin, which may play a role in fluid shear stress and atherosclerosis pathway, lipid and atherosclerosis pathway and AGE-RAGE signal pathway through AKT1, EGFR, IL1B and other targets.
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ObjectiveTo build an evaluation index system for traditional Chinese medicine (TCM) medicated diet, promoting the scientific and standardized development of medicated diet in TCM. MethodsThe framework of the evaluation index system was constructed through literature review and Delphi expert consultation method. The analytic hierarchy process was used to construct a hierarchical structure model. Pairwise comparisons between the indicators were conducted using the Saaty 1-9 scale method, and the weight of each indicator was calculated using Yaahp 10.3. ResultsThe response rates for the two rounds of expert consultation were 93.33% and 100%, respectively. The Kendall's W coefficients for the first-level and second-level indicators in the second round were 0.270 and 0.281, respectively (both P<0.001). Finally, an evaluation index system for TCM medicated diet therapy was constructed, consisting of 6 primary indicators and 27 secondary indicators. The weightings of the primary indicators were as follows: sensory appearance (0.1843), health value (0.3569), ingredient compatibility (0.1271), packaging (0.0370), production and preparation (0.1005), and reliability (0.1940). ConclusionA comprehensive and universally applicable evaluation index system for TCM medicated diet has been developed, taking into conside-rations of color, taste, appearance, efficacy, preparation, quality and others. This system can provide valuable reference for the evaluation of the value of medicated diet as well as its development.
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Diets rich in fiber may provide health benefits and regulate the gut microbiome, which affects the immune system. However, the role of dietary fiber in Clostridioides difficile infection (CDI) is controversial. Here, we investigated the use of fermentable fibers, such as inulin or pectin, to replace the insoluble fiber cellulose to explore how dietary fiber affects C. difficile-induced colitis in mice through intestinal microecology and metabolomics. Using C. difficile VPI 10463, we generated a mouse model of antibiotic-induced CDI. We evaluated disease outcomes and the microbial community among mice fed two fermentable fibers (inulin or pectin) versus the insoluble fiber cellulose. We analyzed and compared the gut microbiota, intestinal epithelium, cytokine levels, immune responses, and metabolites between the groups. Severe histological injury and elevated cytokine levels were observed in colon tissues after infection. Different diets showed different effects, and pectin administration protected intestinal epithelial permeability. Pectin also steadily increased the diversity of the microbiome and decreased the levels of C. difficile-induced markers of inflammation in serum and colonic tissues. The pectin group showed a higher abundance of Lachnospiraceae and a lower abundance of the conditionally pathogenic Enterobacteriaceae than the cellulose group with infection. The concentration of short-chain fatty acids in the cecal contents was also higher in the pectin group than in the cellulose group. Pectin exerted its effects through the aryl hydrocarbon receptor (AhR) pathway, which was confirmed by using the AhR agonist FICZ and the inhibitor CH2223191. Our results show that pectin alters the microbiome and metabolic function and triggers a protective immune response.
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Clostridioides difficile , Clostridium Infections , Enterocolitis, Pseudomembranous , Mice , Animals , Dietary Fiber , Inulin , Disease Models, Animal , Pectins , Cellulose , CytokinesABSTRACT
The depletion of Bacteroides in the gut is closely correlated with the progression of alcoholic liver disease (ALD). This study aimed to identify Bacteroides strains with protective effects against ALD and evaluate the synergistic effects of Bacteroides and pectin in this disease. Mice were fed Lieber-DeCarli alcohol diet to establish an experimental ALD model and pre-treated with 4 Bacteroides strains. The severity of the liver injury, hepatic steatosis, and inflammation was evaluated through histological and biochemical assays. We found that Bacteroides fragilis ATCC25285 had the best protective effects against ALD strains by alleviating both ethanol-induced liver injury and steatosis. B. fragilis ATCC25285 could counteract inflammatory reactions in ALD by producing short-chain fat acids (SCFAs) and enhancing the intestinal barrier. In the subsequent experiment, the synbiotic combination of B. fragilis ATCC25285 and pectin was evaluated and the underlying mechanisms were investigated by metabolomic and microbiome analyses. The combination elicited superior anti-ALD effects than the individual agents used alone. The synergistic effects of B. fragilis ATCC25285 and pectin were driven by modulating gut microbiota, improving tryptophan metabolism, and regulating intestinal immune function. Based on our findings, the combination of B. fragilis ATCC25285 and pectin can be considered a potential treatment for ALD. KEY POINTS: ⢠B. fragilis ATCC25285 was identified as a protective Bacteroides strain against ALD. ⢠The synbiotic combination of B. fragilis and pectin has better anti-ALD effects. ⢠The synbiotic combination modulates gut microbiota and tryptophan metabolism.
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Bacteroides , Liver Diseases, Alcoholic , Animals , Ethanol/metabolism , Inflammation/metabolism , Liver/metabolism , Liver Diseases, Alcoholic/pathology , Liver Diseases, Alcoholic/prevention & control , Mice , Mice, Inbred C57BL , Pectins/metabolism , Tryptophan/metabolismABSTRACT
The physiological and pathological processes that accompany aging can seriously affect the quality of life of the elderly population. Therefore, delaying aging and developing antiaging products have become popular areas of inquiry. Gut microbiota plays an important role in age-related phenotypes. The present study aimed to investigate the antiaging effects and underlying mechanism of parishin, a phenolic glucoside isolated from traditional Chinese medicine Gastrodia elata. Samples from adult (12 weeks), low-dose (10 mg/kg/d) or high-dose (20 mg/kg/d) parishin-treated and untreated aged (19 months) mice were collected to determine blood indicators, gut microbiota and metabolome, and cardiopulmonary histopathological features. The results showed that parishin treatment ameliorates aging-induced cardiopulmonary fibrosis and increase in serum p16 Ink4a , GDF15, and IL-6 levels. Furthermore, parishin treatment alleviated dysbiosis in gut microbiota, including altered microbial diversity and the aberrant abundance of opportunistic pathogenic bacteria such as Turicibacter and Erysipelatoclostridium. Gene function prediction and gut metabolome analysis results indicated that the parishin treatment-altered gut microbiota played important roles in sugar, lipid, amino acid and nucleic acid metabolism, and improved gut metabolic disorders in aged mice. In conclusion, the present study provides an experimental basis of potential applications of parishin against aging.
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Ganoderma lucidum is a medicinal mushroom used in traditional Chinese medicine with putative tranquilizing effects. However, the component of G. lucidum that promotes sleep has not been clearly identified. Here, the effect and mechanism of the acidic part of the alcohol extract of G. lucidum mycelia (GLAA) on sleep were studied in mice. Administration of 25, 50 and 100 mg/kg GLAA for 28 days promoted sleep in pentobarbital-treated mice by shortening sleep latency and prolonging sleeping time. GLAA administration increased the levels of the sleep-promoting neurotransmitter 5-hydroxytryptamine and the Tph2, Iptr3 and Gng13 transcripts in the sleep-regulating serotonergic synapse pathway in the hypothalamus during this process. Moreover, GLAA administration reduced lipopolysaccharide and raised peptidoglycan levels in serum. GLAA-enriched gut bacteria and metabolites, including Bifidobacterium, Bifidobacterium animalis, indole-3-carboxylic acid and acetylphosphate were negatively correlated with sleep latency and positively correlated with sleeping time and the hypothalamus 5-hydroxytryptamine concentration. Both the GLAA sleep promotion effect and the altered faecal metabolites correlated with sleep behaviours disappeared after gut microbiota depletion with antibiotics. Our results showed that GLAA promotes sleep through a gut microbiota-dependent and serotonin-associated pathway in mice.
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Biological Products/pharmacology , Gastrointestinal Microbiome/drug effects , Reishi , Serotonin/metabolism , Sleep/drug effects , Tranquilizing Agents/pharmacology , Animals , Biological Products/chemistry , Biological Products/isolation & purification , Circadian Rhythm/drug effects , Male , Mice , Reishi/chemistry , Signal Transduction/drug effects , Tranquilizing Agents/chemistry , Tranquilizing Agents/isolation & purificationABSTRACT
OBJECTIVE@#To analyze the literature knowledge structure and acupoint matching rules of acupuncture for depression.@*METHODS@#The articles regarding acupuncture for depression published from January 1 of 1984 to October 19 of 2020 were searched in CNKI database. CiteSpace5.7.R2 software was used to import the literature data, and the keyword cluster analysis, emergence analysis and time-zone analysis of articles and acupoints were conducted, and the map of scientific knowledge was draw.@*RESULTS@#A total of 3524 articles were included to the knowledge structure analysis, while 601 articles into the acupoint matching rules analysis. There were 13 keyword clusters of acupuncture for depression, with "post-stroke depression" and "electroacupuncture treatment" as high-frequency keywords, and "electroacupuncture treatment" and "Hamilton depression scale" had high centrality, and "electroacupuncture treatment" had the highest emergence intensity. The keywords such as "electroacupuncture treatment" and "Hamilton depression scale", etc. appeared the earliest, followed by "post-stroke depression", "fluoxetine" and "auricular point therapy", etc. According to traditional Chinese medicine theory, acupoint keywords were divided into four clusters: ①core acupoint, ②replenishing-spleen and dispelling phlegm, dispersing-liver and relieving depression, reinforcing @*CONCLUSION@#The main knowledge structure of acupuncture for depression includes five parts: treatment method, depression type, TCM-related diseases, literature type and curative effect index. Clinical acupoint matching should adhere to the principle of "focusing the disease before syndrome" and "combination of disease and syndrome", and treatment should be modified for the syndromes of phlegm stagnation blocking, liver-stagnation and
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Acupuncture Points , Acupuncture Therapy , Depression/therapy , Electroacupuncture , Medicine, Chinese TraditionalABSTRACT
Acute liver failure is a clinical emergency associated with high mortality. Accumulating evidence indicates that gut microbiota participates in the progression of liver injury, and preventive therapies based on altering gut microbiota are of great interest. Previous studies demonstrated that Lactobacillus salivarius LI01 attenuates hepatic injury, though efficiency in curtailed in the harsh environment in the gastrointestinal tract. In this study, a system to encapsulate LI01 in alginate-pectin (AP) microgels was investigated. Encapsulation significantly enhances probiotic viability for long-term storage and heat treatment, and in simulated gastrointestinal fluids (SGF or SIF) and bile salt solutions. Acute liver injury was induced in Sprague-Dawley (SD) rats by D-galactosamine (D-GaIN) injection following pretreatment with probiotics. Liver and gut barrier function, cytokines, liver and gut histology, bacterial translocation, and gut microbiota were assessed. Administration of encapsulated LI01 more effectively upregulates hepatic anti-inflammatory cytokine IL-10 and TLR-3, restores expressions of gut barrier biomarkers Claudin-1 and MUC2 and attenuates destruction of mucosal ultrastructure compared with unencapsulated probiotics pretreatment. Pretreatment with AP-LI01 microgels altered the microbial community, decreasing the abundance of pathogenic taxa Ruminiclostridium, Dorea and Ruminococcaceae_UCG-004 and enriching beneficial taxa Ruminococcaceae_UCG-014, Eubacterium, and Prevotella_1 that produce short-chain fatty acids. These results suggest that AP encapsulation of LI01 boosts viability and attenuates liver injury by reducing inflammation and restoring intestinal barrier function. These beneficial effects are probably due to alternation of gut flora. These findings provide new insight into encapsulation technology and prevention of liver failure. KEY POINTS: ⢠Alginate-pectin encapsulation enhances the viability of Lactobacillus salivarius LI01 under simulated commercial conditions and simulated gastrointestinal environment. ⢠AP-LI01 microgel attenuates hepatic and intestinal inflammation and restores gut barrier function. ⢠AP-LI01 microgel alters gut microbial community with increased SCFAs producers and decreased pathogenic microbes. ⢠Beneficial improvements after administration of probiotics are highly associated with alternation of gut microbial community.
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Ligilactobacillus salivarius , Microgels , Probiotics , Alginates , Animals , Galactosamine , Liver , Pectins , Rats , Rats, Sprague-DawleyABSTRACT
Chinese medicine emphasizes the unity, integrity and connection of things itself. It is a subject of clinical treatment based on the theory of "holistic concept" and "dialectical treatment", and the principle of "treating the same disease with different treatments" and "treating different diseases with the same treatment". Network pharmacology was used to explore the correlation between drugs and diseases from the whole, and its integrity, systematicness, and the characteristics of paying attention to drug and target interaction are consistent with the basic characteristics of traditional Chinese medicine, so network pharmacology is a new subject from the system level to reveal the role of traditional Chinese medicine on the body network regulation. Network pharmacology used computer simulations and various databases to screen targets for drug molecules to predict their signaling pathways and the mechanism of action, and the related software was used to visualize the compound-target-pathway network, and the key nodes were screened by topological parameter analysis. It can solve the limitation of "single component-single target point-single pathway" in traditional Chinese medicine research to some extent. The thinking methods, innovation points, international application of traditional Chinese medicine and the challenges were summarized in this paper, in order to improve the application of network pharmacology in the field of traditional Chinese medicine, and provide a new direction for the research of traditional Chinese medicine.
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Mylabris is a traditional Chinese medicine and ethnic medicine, which has significant effects on treatment of malignant tumors and dermatophytosis and so on. It has been recorded in most historical Chinese Pharmacopoeias. However, because of its hypertoxicity in the crud forms, Mylabris needs to be furtherly processed if it is taken orally. There are various methods about how to process it in previous Materia Medica Classics, whereas the most modern approaches are mainly using cleansing technology and stir-baked with rice technology. Moreover, the technologies stipulated by local processing regulations are different from the stipulations of pharmacopoeias. This research combs through the history evolution systematically in the processing of Mylabris, and analyzed the existential issues in modern research on it, so as to provide references for the processing and the quality control of Mylabris.
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Butyrate exerts protective effects against non-alcoholic steatohepatitis (NASH), but the underlying mechanisms are unclear. We aimed to investigate the role of butyrate-induced gut microbiota and metabolism in NASH development. Sixty-five C57BL/6J mice were divided into four groups (n = 15-17 per group) and were fed either a methionine-choline-sufficient (MCS) diet or methionine-choline-deficient (MCD) diet with or without sodium butyrate (SoB; 0.6 g/kg body weight) supplementation for 6 weeks. Liver injury, systematic inflammation, and gut barrier function were determined. Fecal microbiome and metabolome were analyzed using 16S rRNA deep sequencing and gas chromatography-mass spectrometry (GC-MS). The results showed that butyrate alleviated the MCD diet-induced microbiome dysbiosis, as evidenced by a significantly clustered configuration separate from that of the MCD group and by the depletion of Bilophila and Rikenellaceae and enrichment of promising probiotic genera Akkermansia, Roseburia, Coprococcus, Coprobacillus, Delftia, Sutterella, and Coriobacteriaceae genera. The fecal metabolomic profile was also substantially improved by butyrate; several butyrate-responsive metabolites involved in lipid metabolism and other pathways, such as stearic acid, behenic acid, oleic acid, linoleic acid, squalene, and arachidonic acid, were identified. Correlation analysis of the interaction matrix indicated that the modified gut microbiota and fecal metabolites induced by butyrate were strongly correlated with the alleviation of hepatic injury, fibrosis progression, inflammation, and lipid metabolism and intestinal barrier dysfunction. In conclusion, our results demonstrated that butyrate exerts protective effects against NASH development, and these effects may be driven by the protective gut microbiome and metabolome induced by butyrate. This study thus provides new insights into NASH prevention.
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A new caffeic acid tetramer compound, named (+) methyl rabdosiin (4), together with seven known caffeic acid multimers (1-3, 5-8) and one caffeic acid monomer (9), were isolated from the aerial parts of Dracocephalum moldavica L. The structures of these compounds were assigned on the basis of 1D and 2D NMR spectroscopic and mass spectrometry analyses. The protective effects of compounds 2-4 against hydrogen peroxide (H2O2)-induced apoptosis were evaluated in primary cardiomyocytes of SD neonatal rats in vitro by the MTT method. Three compounds exhibited potent protective activities at 12.5 µg/mL.
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Caffeic Acids/isolation & purification , Lamiaceae/chemistry , Lignans/isolation & purification , Plant Extracts/chemistry , Protective Agents/isolation & purification , Animals , Apoptosis/drug effects , Caffeic Acids/analysis , Cells, Cultured , Hydrogen Peroxide/toxicity , Lignans/analysis , Molecular Structure , Myocytes, Cardiac/drug effects , Myocytes, Cardiac/pathology , Protective Agents/pharmacology , Rats , Spectrum AnalysisABSTRACT
Two new biflavonone compounds, sikokianin D (1) and sikokianin E (2), were isolated from the capitulum of Coreopsis tinctoria. The structures of these compounds were elucidated by spectroscopic techniques including NMR, HRESIMS and circular dichroism (CD).
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Biflavonoids/isolation & purification , Coreopsis/chemistry , Drugs, Chinese Herbal/isolation & purification , Biflavonoids/chemistry , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Molecular Structure , Nuclear Magnetic Resonance, BiomolecularABSTRACT
An ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry approach coupled with multivariate statistical analysis was established and applied to rapidly distinguish the chemical differences between fibrous root and rhizome of Anemarrhena asphodeloides. The datasets of tR-m/z pairs, ion intensity and sample code were processed by principal component analysis and orthogonal partial least squares discriminant analysis. Chemical markers could be identified based on their exact mass data, fragmentation characteristics, and retention times. And the new compounds among chemical markers could be isolated rapidly guided by the ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry and their definitive structures would be further elucidated by NMR spectra. Using this approach, twenty-four markers were identified on line including nine new saponins and five new steroidal saponins of them were obtained in pure form. The study validated this proposed approach as a suitable method for identification of the chemical differences between various medicinal parts in order to expand medicinal parts and increase the utilization rate of resources.
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Anemarrhena/chemistry , Plant Extracts/analysis , Plant Extracts/chemistry , Plant Roots/chemistry , Rhizome/chemistry , Tandem Mass Spectrometry/methods , Chromatography, High Pressure Liquid/methods , Chromatography, High Pressure Liquid/standards , Multivariate Analysis , Tandem Mass Spectrometry/standardsABSTRACT
Objective To discuss the practical application effect of the work process oriented teaching model that based on flipped classroom in the teaching of higher vocational Chinese medicines.Method We chose 97 students from Grade 2012 higher vocational Chinese traditional medicine,set them into experimental group (47 students) and comparison group (50 students).The experimental group was applied with the flipped classroom teaching,combined with the teaching mode of working process and the comparison group was applied with the traditional teaching mode from September 2014 to July 2015.At the end of the experiment,through the questionnaire survey,the differences of the experimental group students' autonomous learning ability and problem solving ability were compared between before the experiment teaching and after the teaching.The difference of post adaptation ability of the experimental group and the control group was also compared,and besides,the students' satisfaction degree to flipped classroom combined with working process teaching mode was investigated and analyzed.SPSS 16.0 software was used for statistical analysis,and t test was used to compare two groups' measurement information and count data with chi-square test.Result The score of independent learning ability after teaching in the experimental group was significantly higher than before [(77.50 ± 7.10) vs.(88.51 ± 9.30);t=6.451,P=0.000].However,there was no statistically significant difference in problem-solving capability before and after the teaching[(83.70 ± 2.32) vs.(84.30 ± 2.11);t=1.312,P=0.193].The score of five aspects of the adaptability to work in the experimental group and total score were higher than the comparison group and the difference was statistically significant [work attitude (18.72 ± 2.01) vs.(16.78 ± 3.33),t=3.447,P=0.001;service ability (17.99 ± 1.98) vs.(16.05 ± 2.15),t=4.614,P=0.000;professional ability (18.19 ± 2.46) vs.(15.37 ± 2.79),t=5.267,P=0.000;completion of work (19.01 ± 1.75) vs.(16.88 ± 1.83),t=5.851,P=0.000;strain capacity:(18.33 ± 2.09) vs.(17.01 ± 2.46),t=2.839,P=0.006;the total score of job adaptability (92.24 ± 3.89) vs.(82.09 ± 4.05),t=12.574,P=0.000].Experimental group's satisfaction showed that 91.48% of students liked the teaching model,87.23% thought that it improved their learning interest,82.98% believed that it was beneficial to improving their communication skills.Conclusion Teaching mode of flipped classroom combined with working process helps to improve teaching quality.
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OBJECTIVE:To investigate the effects of hyperbaric oxygen combined with flupentixol and melitracen on depres-sion improvement,extremity motor function and ability of daily living and activity in patients with post-stroke depression (PSD). METHODS:60 PSD patients were divided into control group and observation group according to random number table,with 30 cases in each group. Both groups received routine clinical treatment,comprehensive rehabilitation therapy and psychotherapy. The control group was additionally given Flupentixol and melitracen tablets,orally,one tablet each time,in the morning;3 days later, one tablet each time,in the morning and noon,for 4 weeks. Other anti-depressive agents were not given during treatment. Observa-tion group was additionally given hyperbaric oxygen,0.12 MPa,for 90 min,qd,5 times a week,for 4 weeks,on the basis of control group. Depression degree [Hamilton depression scale (HAMD) and Self-rating depression scale(SDS)],extremity motor function [Fugl-Mayer motor function assessment (FMA)] and ability of daily living and activity [modified Barthel index (MBI)] were scored in 2 groups before and after treatment,and ADR was observed. RESULTS:After 4 weeks of treatment,HAMD and SDS of 2 groups were decreased significantly compared to before treatment,while FMA and MBI were increased significantly;the improvement of observation group was significantly better than that of control group,with statistical significance(P<0.05). No ob-vious ADR was found in 2 groups. CONCLUSIONS:Hyperbaric oxygen combined with flupentixol and melitracen can effectively improve PSD,relieve negative emotion and improve extremity motor function and ability of daily living and activity.
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Spirostanol saponins are important active components of some herb medicines, and their isolation and purification are crucial for the research and development of traditional Chinese medicines. We aimed to compare the separation of spirostanol saponins by ultra-high performance supercritical fluid chromatography (UHPSFC) and ultra-high performance liquid chromatography (UHPLC). Four groups of spirostanol saponins were separated respectively by UHPSFC and UHPLC. After optimization, UHPSFC was performed with a HSS C18 SB column or a Diol column and with methanol as the co-solvent. A BEH C18 column and mobile phase containing water (with 0.1% formic acid) and acetonitrile were used in UHPLC. We found that UHPSFC could be performed automatically and quickly. It is effective in separating the spirostanol saponins which share the same aglycone and vary in sugar chains, and is very sensitive to the number and the position of hydroxyl groups in aglycones. However, the resolution of spirostanol saponins with different aglycones and the same sugar moiety by UHPSFC was not ideal and could be resolved by UHPLC instead. UHPLC is good at differentiating the variation in aglycones, and is influenced by double bonds in aglycones. Therefore, UHPLC and UHPSFC are complementary in separating spirostanol saponins. Considering the naturally produced spirostanol saponins in herb medicines are different both in aglycones and in sugar chains, a better separation can be achieved by combination of UHPLC and UHPSFC. UHPSFC is a powerful technique for improving the resolution when UHPLC cannot resolve a mixture of spirostanol saponins and vice versa.
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Saponins/chemistry , Spirostans/chemistry , Chromatography, High Pressure Liquid/methods , Chromatography, Supercritical Fluid/methods , Methanol/chemistry , Plants, Medicinal/chemistry , Water/chemistryABSTRACT
A new phenolic glycoside, syringic acid 4-O-ß-D-glucopyranosyl-(1 â 5)-α-L-rhamnopyranoside (1), together with 12 known compounds consisting of eight phenolic glycosides (2-9), two phenolic acids (10 and 11), and two norsesquiterpenoids (12 and 13), was isolated from the methanol extract of the bark of Magnolia officinalis. Their structures were elucidated on the basis of spectroscopic analysis and chemical methods. Compounds 1-11 were evaluated for their inhibitory activities against fructose-1,6-bisphosphatase, aldose reductase, lipase, dipeptidyl peptidase-IV, α-glucosidase, and three cancer cell lines. However, all the compounds showed weak or no activities in these tests.