The pharmacodynamic material basis constitutes the central element of traditional Chinese medicine(TCM)in disease treatment.By summarizing the active compounds'characteristics,bioavailability,pharmacological effec...The pharmacodynamic material basis constitutes the central element of traditional Chinese medicine(TCM)in disease treatment.By summarizing the active compounds'characteristics,bioavailability,pharmacological effects,and molecular mechanisms,we can explain the complex interactions between TCMs and diseases.Previous studies have demonstrated that monoterpene glycosides and tannins are related to the pharmacological activity of Radix Paeoniae Alba(RPA).However,research on RPA has primarily focused on monoterpene glycosides,and the functional role of tannins in RPA has received little attention.Observations from animal studies indicate that monoterpene glycosides and tannins exhibit poor bioavailability.Carboxylesterase,produced by gut microbiota,is crucial for metabolizing these compounds in the intestine.Monoterpene glycosides and their gut metabolites can be absorbed into the bloodstream,exerting various pharmacological effects,including anti-inflammatory,immunomodulatory,and neuromodulator activities.In contrast,tannins consist of highly hydrophobic polyphenols that form insoluble protein-tannin complexes.Due to their inability to cross the intestinal barrier,tannins primarily exert localized pharmacological effects within the digestive system.This study systematically reviews the pharmacological activities and mechanisms of monoterpene glycosides and tannins in RPA,while establishing their therapeutic contributions to the herb's pharmacological effects.展开更多
Blueberry juice maintains the nutritional value of fresh berries while providing their complex flavor profile.Anthocyanins contribute to the vibrant color of blueberry juice and exhibit physiological functions.Steviol...Blueberry juice maintains the nutritional value of fresh berries while providing their complex flavor profile.Anthocyanins contribute to the vibrant color of blueberry juice and exhibit physiological functions.Steviol glycosides are widely utilized as a natural sweetener in fruit beverages,and investigating their regulatory role in the degradation of anthocyanins within juice systems is of considerable importance.This study aimed to examine the effects of steviol glycosides on the color,anthocyanin content,antioxidant capacity,and in vitro simulated digestion stability of anthocyanins in blueberry juice during storage.The juice was stored for 90 d at 4 and 25℃in dark conditions.Throughout storage,the juice exhibited color fading,accompanied by a loss of its original color intensity.Notably,the sample supplemented with 20 mg/100 mL steviol glycosides showed the least color change when stored at 4℃.The addition of steviol glycosides resulted in a reduced degradation rate constant(k)and an extended half-life(t1/2)of anthocyanins.Thermodynamic analysis indicated that steviol glycosides enhanced the thermal stability of anthocyanins in blueberry juice.Furthermore,blueberry juice containing 12 and 16 mg/100 mL steviol glycosides demonstrated the highest hydroxyl radical scavenging capacity at 4℃,and the strongest ABTS radical scavenging activity at 25℃,respectively.During in vitro simulated digestion,the sample with 4 mg/100 mL steviol glycosides exhibited the highest retention rate of total anthocyanins.Molecular docking analysis revealed the formation of hydrophobic interactions and hydrogen bonds between stevioside and cyanidin-3-O-glucoside,as well as malvidin-3-O-galactoside.The findings of this study provide a solid foundation for advancing fruit juice processing technologies.展开更多
Long-term use of Sorafenib(SOR)in patients with hepatocellular carcinoma will lead to drug resistance,leading to diarrhea,weight loss and other adverse reactions.Cistanche deserticola,as a homologous substance of medi...Long-term use of Sorafenib(SOR)in patients with hepatocellular carcinoma will lead to drug resistance,leading to diarrhea,weight loss and other adverse reactions.Cistanche deserticola,as a homologous substance of medicine and food,its total glycosides(TG)have anti-hepatocellular carcinoma activity.This paper aimed to explore the anti-hepatocellular carcinoma effect of TG combined with SOR on mice and its mechanism.In this study,according to the previous research of experts,the dosage of 30 mg/kg SOR was selected,aiming at giving consideration to the anti-tumor effect and reducing toxicity.Specifically,HepG2 cells were used to establish a subcutaneous tumorigenic model.Histological changes,oxidative stress,immune regulation and intestinal metabolism and microbial composition of mice were detected.It was found TG did not affect the normal growth of mice without any toxic side effects and could synergize with SOR to inhibit tumor growth.Hematoxylin-eosin results found mice in TG group had more complete hepatocyte structure and less pathological changes in liver.The tumor tissue cells became rare and necrotic.TUNEL staining results revealed that TG could significantly promote apoptosis of HepG2 cells,but at a lower level than SOR.In addition,the content of catalase(CAT),superoxide dismutase(SOD)and glutamic-pyruvic transaminase(ALT)increased,aspartate aminotransferase(AST)and alkaline phosphatase(ALP)decreased,indicating TG could effectively reduce liver lesions.TG could also decrease the content of interleukin-2(IL-2),interleukin-17(IL-17),tumor necrosis factor-α(TNF-α),etc.,and increase interferon-γ(IFN-γ),granulocyte-macrophage colony stimulating factor(GM-CSF).Meanwhile,immunohistochemistry was used to observe the decreased expression of Ki67,β-catenin and dishevelled(Dsh)proteins and the increased GSK-3βin the tumor tissues,it was presumed that TG exerted its anti-hepatocellular carcinoma activity through the Wnt/β-catenin signaling pathway.Most importantly,TG could synergize with SOR to regulate metabolic levels in the gut,balance intestinal microbial composition,and increase the abundance of beneficial intestinal bacteria.In conclusion,the results showed that TG(64 mg/kg)could assist SOR(30 mg/kg)to inhibit the development of hepatocellular carcinoma,provide some theoretical basis and technical support.C.deserticola,as a homologous substance of medicine and food,its combination with SOR can provide a new idea for the treatment of hepatocellular carcinoma and its future application potential is worth further exploration and development.展开更多
Tea plant[Camellia sinensis(L.)O.Kuntze]is a globally important crop but is severely threatened by Toxoptera aurantia infestations,which impact yield and safety.However,the response of tea plants to aphid feeding rema...Tea plant[Camellia sinensis(L.)O.Kuntze]is a globally important crop but is severely threatened by Toxoptera aurantia infestations,which impact yield and safety.However,the response of tea plants to aphid feeding remains largely unexplored.This study investigates the feeding behavior of T.aurantia on different cultivars and identifies‘Huangjinya’and‘Qiancha 1’as susceptible and resistant cultivars,respectively.Transcriptome analysis revealed that CsUGT89A2 was significantly upregulated in response to T.aurantia infestation.In vitro biochemical assays demonstrated that CsUGT89A2 encodes a f lavonoid 7-glycosyltransferase that catalyzes the conversion of f lavonoids and UDP-glucose into f lavonoid 7-O-glucosides.In vivo,silencing CsUGT89A2 significantly reduced f lavonoid glycoside accumulation.To further clarify the role of CsUGT89A2 in tea plant resistance to T.aurantia,we used tobacco and tea f lowers to evaluate aphid feeding and reproduction under chemical treatment,gene silencing,and gene overexpression conditions.Statistical analysis showed that,compared with f lavonoids,the application of f lavonoid 7-O-glycosides significantly reduced T.aurantia reproductive capacity.Furthermore,compared with the control,overexpression of CsUGT89A2 significantly reduced the reproductive ability of aphids,while its silencing increased reproductive rates.Overall,our findings demonstrate that CsUGT89A2 mediates f lavonoid glycosylation and enhances insect resistance in tea plants by increasing f lavonoid glycoside levels,offering new insights into the role of f lavonoid glycosides in the insect resistance of C.sinensis.展开更多
Background:Qingyangshen(Cynanchum otophyllum C.K.Schneid)is a folk drug for treating depression and other mental disorders induced by social defeat stress.Neuroplasticity in the hippocampus is essential for the modula...Background:Qingyangshen(Cynanchum otophyllum C.K.Schneid)is a folk drug for treating depression and other mental disorders induced by social defeat stress.Neuroplasticity in the hippocampus is essential for the modulation of cognition and emotion,and its impairment may contribute to the development and progression of depression.Our previous studies have found that Qingyangshen glycosides(QYS)can improve depression-like behavior in social failure mouse models,mainly through PGC-1α/FNDC5/BDNF signaling pathways activation,but its effects and mechanisms on hippocampal neuroplasticity remain unknown.Methods:Chronic social defeat stress(CSDS)was used to induce social defeat in mice.Morphological changes in the hippocampus were observed by H&E staining and Golgi staining.Immunofluorescence double staining was used to detect the expression of synaptophysin(SYN)and postsynaptic density protein-95(PSD-95),while western blot was employed to evaluate PSD-95,SYN,and doublecortin(DCX)proteins.The pathological processing of social defeat and the therapeutic effects of QYS on it was confirmed through behavioral assessment associated with morpho-logic observation.Results:During the whole study,the sucrose preference indices and OFT activity time of CSDS mice were significantly decreased(p≤0.05),and the tail suspension immobil-ity time was significantly increased(p≤0.05),suggesting that the mice had significant depressive symptoms.Treatment with QYS(25,50,and 100 mg/kg)significantly al-leviated depressive symptoms in CSDS mice,which was demonstrated by significantly(p≤0.05 or p≤0.01)reducing the duration of tail-hanging immobility and increasing the tendency of sucrose preference indices and OFT activity time.QYS treatment also significantly increased the expression of DCX,PSD-95,and SYN proteins,which play a crucial role in depression.Conclusions:QYS alleviated these symptoms by enhancing hippocampal neuroplasti-city through upregulating the expression of synapse-associated proteins(SAPs).The therapeutic mechanism of QYS may involve modulating the neuroplasticity of hip-pocampus neurons by altering the expression of SAPs.展开更多
Five new flavan-4-ol glycosides jixueqiosides A-E(1-5)and two new flavan glycosides jixueqiosides F and G(6 and 7),along with twelve known flavan-4-ol glycosides(8-19),were isolated from the roots of Pronephrium penan...Five new flavan-4-ol glycosides jixueqiosides A-E(1-5)and two new flavan glycosides jixueqiosides F and G(6 and 7),along with twelve known flavan-4-ol glycosides(8-19),were isolated from the roots of Pronephrium penangianum.Comprehensive spectral analyses,X-ray single-crystal diffraction,and theoretical electronic circular dichroism(ECD)calculations established structures and absolute configurations.A single crystal structure of flavan-4-ol glycoside(14)was reported for the first time,while the characteristic ECD and NMR data for all isolated flavan-4-ol glycosides(1-5,8-19)were analyzed,establishing a set of empirical rules.Activity screening of these isolates showed that 8 and 9 could inhibit the proliferation of MDA-MB-231 and MCF-7 cells with IC50 values of 7.93±2.85μmol·L-1and 5.87±1.58μmol·L-1(MDA-MB-231),and 2.21±1.38μmol·L-1and 3.52±1.55μmol·L-1(MCF-7),respectively.Western blotting and flow cytometry analyses demonstrated that 8 and 9 dose-dependently induced apoptosis in MDA-MB-231 cells by up-regulating BAX,activating caspase-3 and down-regulating BCL-2.Additionally,compound 8 affected autophagy-related proteins,increasing the ratio of LC3-II/LC3-I and Beclin-1 levels to inhibit MDA-MB-231 cell proliferation.Moreover,anti-inflammatory studies indicated that 2,3,7,13,14,and 18 moderately inhibited tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),and nitric oxide(NO)release.展开更多
The high content of cyanogenic glycosides(CG)in cassava tubers affects food safety.CG are involved in the plant growth and development and protect cassava leaves from herbivorous predators.However,the regulatory mecha...The high content of cyanogenic glycosides(CG)in cassava tubers affects food safety.CG are involved in the plant growth and development and protect cassava leaves from herbivorous predators.However,the regulatory mechanism of CG biosynthesis remains poorly understood.Here,yeast one-hybrid assays were performed using a mixed cDNA library of cassava tubers and leaves as prey and the promoter of MeCYP79D2 as bait.MeCYP79D2,a cytochrome P450 protein,is the rate-limiting enzyme for CG synthesis in cassava.From this information,a candidate regulator of MeCYP79D2 was selected and identified as transcription factor MePHD1.2.MePHD1.2,located in the nucleus and exhibiting an inhibitory transcription activity directly bound to an AT-rich motif in the promoter of MeCYP79D2.In cassava,the transcriptional activity of MeCYP79D2 was considerably enhanced in mephd1.2 mutant lines leading to increased linamarin and lotaustralin contents.Deletion of MePHD1.2 promoted the production of CGs in cassava and decreased transcription inhibition on MeCYP79D2,exposing a novel regulatory module governing biosynthesis of CGs.展开更多
Withering is a crucial step in tea production that reduces the moisture content and induces biochemical changes in tea leaves.The withering process triggers oxidative stress by accumulating reactive oxygen species(ROS...Withering is a crucial step in tea production that reduces the moisture content and induces biochemical changes in tea leaves.The withering process triggers oxidative stress by accumulating reactive oxygen species(ROS)in tea leaves.The presence of flavonol glycosides is crucial for tea quality and tea's stress response to environmental changes pre-and post-harvest.However,the role of flavonol glycosides during withering remains unexplored.The degradation of flavonol glycosides during withering is mainly attributed to the enzymatic antioxidant defense system,which produces flavonol aglycones and soluble sugars that protect leaf cells from oxidative stress.This degradation contributes to a sweeter taste and enhances the taste and aroma of tea.This review emphasizes the role of the withering process and the degradation of flavonol glycosides,highlighting their role in neutralizing ROS formation as a response to oxidative stress,and discusses how changes in flavonol glycosides contribute to the taste of tea.The importance of the withering process in the degradation of flavonol glycosides is also highlighted.Further research is needed to understand the dynamic changes of flavonol glycosides during the withering process,which is essential to improving tea quality.展开更多
Phytochemical study of the n-BuOH extract of Ilex asprella resulted in the discovery of ten new pentacyclic triterpenoid glycosides,comprising nine ursane-type glycosides(1-9)and one oleanane-type glycoside(10),along ...Phytochemical study of the n-BuOH extract of Ilex asprella resulted in the discovery of ten new pentacyclic triterpenoid glycosides,comprising nine ursane-type glycosides(1-9)and one oleanane-type glycoside(10),along with seven known compounds(11-17).Compound 1 is the first reported 19,22-epoxy ursane triterpenoid glycoside,whereas 4 and 5 are rare examples of ursane triterpenoid glycosides containing a 28,19-lactone group.The structural characterization of these compounds was achieved using spectroscopic and chemical techniques,as well as single-crystal X-ray analysis.Compounds 7,12,15,and 17 exhibited moderate cytotoxic activities against H1975 and HCC827 cancer cells.展开更多
Safflower,an economic crop,is renowned for its flowers,which are widely used in medicines for treating cardiovascular and cerebrovascular diseases and in dyes for food and industry.The utility of safflower depends on ...Safflower,an economic crop,is renowned for its flowers,which are widely used in medicines for treating cardiovascular and cerebrovascular diseases and in dyes for food and industry.The utility of safflower depends on its flavonoid glycosides.Therefore,the biosynthesis of safflower flavonoid glycosides has been a focus of attention,but the present mechanisms remain poorly understood.This study aims to identify functional genes associated with flavonoid glycoside biosynthesis in safflower through a comprehensive approach that integrates whole-genome screen and multi-omics correlation studies.CYP and UGT are two crucial gene families involved in flavonoid glycoside biosynthesis.We have screened 264 CYP genes and 140 UGT genes in the genome of safflower and conducted analyses including phylogenetic relationships,conserved motifs,gene structures,cis-acting elements,and chromosome mapping,which provided extensive and comprehensive data on the CYP and UGT gene families.Integration of phenotype and metabolic data from different safflower tissues helped narrow down the screening by confirming that HSYA is synthesized only in flowers.Based on the gene expression patterns and phylogenetic analysis,CtOGT1 was ultimately identified,which could catalyze the generation of glycosides using various flavonoid substrates and exhibited strong substrate affinity.Moreover,molecular docking studies elucidated CtOGT1’s highly active intrinsic mechanism.In conclusion,this study effectively identified genes responsible for flavonoid glycoside biosynthesis in safflower through the integration of whole-genome screen and multi-omics analysis,and established a comprehensive foundation of data,methodology,and experimental evidence for further elucidating the pathways of safflower flavonoid glycoside biosynthesis.展开更多
The present study was designed to develop a practical strategy to tackle the problem of lacking standard compounds and limited references for identifying structure-related compounds in Streptocaulon griffithii Hook. f...The present study was designed to develop a practical strategy to tackle the problem of lacking standard compounds and limited references for identifying structure-related compounds in Streptocaulon griffithii Hook. f., especially those in trace concentrations, with a focus on antitumor activity. The cardiac glycosides(CGs)-enriched part was determined using in vitro bioactive assays in three cancer cell lines and then isolated using macroporous resins. The MS and MS/MS data were acquired using a high performance liquid chromatography coupled with hybrid quadrupole-time of flight(HPLC-Q-TOF-MS) system. To acquire data of trace compound in the extract, a multiple segment program was applied to modify the HPLC-Q-TOF-MS method. A mass defect filter(MDF) approach was employed to make a primary MS data filtration. Utilizing a MATLAB program, the redundant peaks obtained by imprecise MDF template calculated with limited references were excluded by fragment ion classification, which was based on the ion occurrence number in the MDF-filtered total ion chromatograms(TIC). Additionally, the complete cleavage pathways of CG aglycones were proposed to assist the structural identification of 29 common fragment ions(CFIs, ion occurrence number ≥ 5) and diagnostic fragment ions(DFIs, ion occurrence number < 5). As a result, 30 CGs were filtered out from the MDF results, among which 23 were identified. This newly developed strategy may provide a rapid and effective tool for identifying structure-related compounds in herbal medicines.展开更多
A simple, sensitive and specific high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)method combined with solid phase extraction has been developed and validated for the simultaneous quantifi...A simple, sensitive and specific high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)method combined with solid phase extraction has been developed and validated for the simultaneous quantification of paeoniflorinand albiflorin in rats plasma and tissue homogenate after administration of total glycosides of paeony (TGP). Chromatographicseparation was achieved on a C15 column (150 mmx4.6 mm, 5 pro) with mobile phase consisted of acetonitrile-0.05% formicacid aqueous (20: 80, v/v) at a flow rate of 0.5 mL/min. The analytes were detected with triple-quadrupole mass spectrometer usingturbo ion spray with negative ionization in the multiple reaction-monitoring (MRM) modes. The results of method validationconformed to the requirements for the determination of biological samples. This method was successfully applied to thepharmacokinetics and tissue distribution study of TGP in rats. The results showed that paeonifiorin and albiflorin wereabsorbed and reached peak value quickly, and had the similar pharmacokinetic characteristics. Both of them underwent a rapid andwide distribution in the tissues throughout the whole body, among which stomach was the main distribution tissue. Moreover, theyhad the ability to cross the blood-brain barrier.展开更多
AIM: To develop and validate a high performance liquid chromatography(HPLC) coupled with diode array and evaporative light scattering detectors(DAD-ELSD) method for the quantitative determination and fingerprint analy...AIM: To develop and validate a high performance liquid chromatography(HPLC) coupled with diode array and evaporative light scattering detectors(DAD-ELSD) method for the quantitative determination and fingerprint analysis of ten active constituents in three chemical classes(namely, xanthone glycosides, steroidal saponins, and alkaloids) in Zhimu-Huangbai herb pair(ZB). METHOD: Chromatographic separation was performed on a Diamonsil C18 column(4.6 mm × 250 mm, 5 μm, Dikma) by gradient elution using acetic acid in acetonitrile solution at a flow rate of 1.0 mL·min–1 at 260 nm. The drift tube temperature of ELSD was set to 60 ℃ and nebulizer gas pressure was 4.0 Bar. Method validation was performed to assure its linearity, limits of detection and quantification, precision, repeatability, stability, and accuracy. RESULTS: The HPLC-DAD-ELSD method allowed the quantification of ten compounds(phellodendrine, jatrorrhizine, palmatine, berberine, neomangiferin, mangiferin, timosaponin E-I, timosaponin B-II, timosaponin B, and timosaponin A-III), and was successfully applied to fingerprint analysis for ten batches of ZB samples. CONCLUSION: This was the first time to apply the combination of DAD and ELSD for the simultaneous determination of ten active ingredients in ZB. The results showed that the combination of quantitative analysis for marker ingredients and chemical fingerprint for the TCM herb pair provides a potentially powerful, widely introduced, and internationally accepted strategy for assessment of complex TCM formulas.展开更多
Glycosides of Cistanche(GC)is a preparation used extensively for its neuroprotective effect against neurological diseases,but its mechanisms of action remains incompletely understood.Here,we established a bilateral ...Glycosides of Cistanche(GC)is a preparation used extensively for its neuroprotective effect against neurological diseases,but its mechanisms of action remains incompletely understood.Here,we established a bilateral common carotid artery occlusion model of vascular dementia in rats and injected the model rats with a suspension of GC(10 mg/kg/day,intraperitoneally)for 14 consecutive days.Immunohistochemistry showed that GC significantly reduced p-tau and amyloid beta(Aβ)immunoreactivity in the hippocampus of the model rats.Proteomic analysis demonstrated upregulation of mitochondrial precursor protein and downregulation of keratin type II cytoskeletal6A after GC treatment compared with model rats that had received saline.Western blot assay confirmed these findings.Our results suggest that the neuroprotective effect of GC in vascular dementia occurs via the promotion of neuronal cytoskeleton regeneration.展开更多
From the roots ofPicrorhiza scrophulariiflora, two new secoifidoid glycosides, named picrosecosides Ⅰ and Ⅱ (1, 2) have been isolated. Their structures were elucidated on the basis of chemical and spectropic evide...From the roots ofPicrorhiza scrophulariiflora, two new secoifidoid glycosides, named picrosecosides Ⅰ and Ⅱ (1, 2) have been isolated. Their structures were elucidated on the basis of chemical and spectropic evidences.展开更多
In the present study, a method for the quantitative analysis of multi-components by single marker(QAMS) has been developed and validated for the simultaneous determination of echinacoside(ECH), tubuloside A, acteoside...In the present study, a method for the quantitative analysis of multi-components by single marker(QAMS) has been developed and validated for the simultaneous determination of echinacoside(ECH), tubuloside A, acteoside, isoacteoside, and2’-acetylacteoside in Cistanches Herba. ECH was used as the internal standard(IS) to obtain the relative correction factors(RCFs) of the other four phenylethanoid glycosides(PhGs);meanwhile, various influencing factors on RCFs were investigated under different conditions. The content of each component was calculated with RCF. The results were compared with those obtained by the external standard method(ESM) to verify the feasibility and accuracy of the established QAMS method. No significant difference was found in the quantitative results of 10 batches of Cistanches Herba between QAMS and ESM. The proposed QAMS method for simultaneous determination of PhGs in Cistanches Herba is accurate and feasible, providing an efficient and economical approach for the quality control of Cistanches Herba.展开更多
Two new flavonoid glycosides were isolated from the flowering heads of Chrysanthemum morifolium. Their structures were determined to be luteolin 4'-methoxy-7- O-(6"-O-acetyl)-β-D-glucopyranoside (1) and acaceti...Two new flavonoid glycosides were isolated from the flowering heads of Chrysanthemum morifolium. Their structures were determined to be luteolin 4'-methoxy-7- O-(6"-O-acetyl)-β-D-glucopyranoside (1) and acacetin 7-O-(3"-O-acetyl)-β-D-glucopyranoside (2) by means of 1H and 13C NMR spectroscopic analysis, including 2D NMR technique.展开更多
Cymbaria daurica L. is a well-known traditional Mongolian medicine, which has been used to treat diabetesrelated conditions characterized by persistent thirst and hunger, copious urination, and weight loss. We aimed t...Cymbaria daurica L. is a well-known traditional Mongolian medicine, which has been used to treat diabetesrelated conditions characterized by persistent thirst and hunger, copious urination, and weight loss. We aimed to investigate the protective effects of C. daurica extracts and phenylethanoid glycosides including verbascoside and isoacteoside on INS-1 cells. We discovered phenylethanoid glycosides from n-butanol extract with large content through extraction and separation. We continue to study the protective effects of phenylethanoid glycosides including verbascoside and isoacteoside on INS-1 cells. INS-1 cells were treated with C. daurica, cell viability assay, RNA-seq technology, superoxide dismutase activity and malonaldehyde content, quantitative real time-PCR and Western blot analysis were used to study the protective effects of C. daurica. Cell viability assay resulted that n-butanol extract and verbascoside, isoacteoside showed protective effects of C. daurica. According to the RNA-seq technology to identify the differentially expressed genes in INS-1 cells, the pathway of gene enrich the protective effect of C. daurica on oxidative stress. SOD activity and the content of MDA indicated that C. daurica could enhance the antioxidant capacity of INS-1 cells. Further investigation indicated C. daurica alleviate oxidative stress by inhibiting INS-1 cell apoptosis. C. daurica may play an anti-diabetic role by inhibiting islet cell apoptosis.展开更多
Two new phenolic glycosides,2,3-dihydroxybenzoic acid methyl ester 3-O-β-o-glucopyranosyl-(1-6)-β-D-glucopyranoside(1)and 2,5-dihydroxylbenzofuran 5-O-β-D-xylopyranosyl-(1-6)-O-β-D-glucopyranoside(2),were isolated...Two new phenolic glycosides,2,3-dihydroxybenzoic acid methyl ester 3-O-β-o-glucopyranosyl-(1-6)-β-D-glucopyranoside(1)and 2,5-dihydroxylbenzofuran 5-O-β-D-xylopyranosyl-(1-6)-O-β-D-glucopyranoside(2),were isolated as the minor chemical constituents from the roots of Gentiana rigescens,along with 15 known compounds.Their structures were elucidated by detailed spectroscopic analysis,including 1D,2D NMR and chemical method.All of these compounds were isolated for the first time from the title plant.Moreover,compounds 1 and 2 were tested for the antifungal activities on three plant pathogens Peronophythora litchi,Glomerella cingulata,and Glorosprium musarum.展开更多
Two new flavonoid glycosides, named viscumneoside XⅡ(1), and viscumneoside XⅢ(2);a new dihydrogen flavonoid glycoside product named viscumneoside XⅣ(3), were isolated from the aerial part of Viscum album, along wit...Two new flavonoid glycosides, named viscumneoside XⅡ(1), and viscumneoside XⅢ(2);a new dihydrogen flavonoid glycoside product named viscumneoside XⅣ(3), were isolated from the aerial part of Viscum album, along with seven known compounds(4-10). Their structures were identified by analysis of spectroscopic data. In addition, cytotoxicity assay showed that 1, 2 and 3 possessed significant inhibitory activities against C6, A549 and MDA-MB-231(the inhibition rate arrived about 50%, 70% and74% respectively with IC50 ≤ 60.00 μmol·L^-1), while the inhibition of TF-1 and Hela was not significant.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.:82274101 and 82374123)the Natural Science Foundation of Zhejiang Province,China(Grant No.:LY24H280002)the fResearch Project of Zhejiang Chinese Medical University,China(Grant No.:2025JKZKTS23)。
摘要The pharmacodynamic material basis constitutes the central element of traditional Chinese medicine(TCM)in disease treatment.By summarizing the active compounds'characteristics,bioavailability,pharmacological effects,and molecular mechanisms,we can explain the complex interactions between TCMs and diseases.Previous studies have demonstrated that monoterpene glycosides and tannins are related to the pharmacological activity of Radix Paeoniae Alba(RPA).However,research on RPA has primarily focused on monoterpene glycosides,and the functional role of tannins in RPA has received little attention.Observations from animal studies indicate that monoterpene glycosides and tannins exhibit poor bioavailability.Carboxylesterase,produced by gut microbiota,is crucial for metabolizing these compounds in the intestine.Monoterpene glycosides and their gut metabolites can be absorbed into the bloodstream,exerting various pharmacological effects,including anti-inflammatory,immunomodulatory,and neuromodulator activities.In contrast,tannins consist of highly hydrophobic polyphenols that form insoluble protein-tannin complexes.Due to their inability to cross the intestinal barrier,tannins primarily exert localized pharmacological effects within the digestive system.This study systematically reviews the pharmacological activities and mechanisms of monoterpene glycosides and tannins in RPA,while establishing their therapeutic contributions to the herb's pharmacological effects.
基金support by The Provincial Doctoral Research Start up Fund of Shenyang Agricultural University(8804/880420024).
摘要Blueberry juice maintains the nutritional value of fresh berries while providing their complex flavor profile.Anthocyanins contribute to the vibrant color of blueberry juice and exhibit physiological functions.Steviol glycosides are widely utilized as a natural sweetener in fruit beverages,and investigating their regulatory role in the degradation of anthocyanins within juice systems is of considerable importance.This study aimed to examine the effects of steviol glycosides on the color,anthocyanin content,antioxidant capacity,and in vitro simulated digestion stability of anthocyanins in blueberry juice during storage.The juice was stored for 90 d at 4 and 25℃in dark conditions.Throughout storage,the juice exhibited color fading,accompanied by a loss of its original color intensity.Notably,the sample supplemented with 20 mg/100 mL steviol glycosides showed the least color change when stored at 4℃.The addition of steviol glycosides resulted in a reduced degradation rate constant(k)and an extended half-life(t1/2)of anthocyanins.Thermodynamic analysis indicated that steviol glycosides enhanced the thermal stability of anthocyanins in blueberry juice.Furthermore,blueberry juice containing 12 and 16 mg/100 mL steviol glycosides demonstrated the highest hydroxyl radical scavenging capacity at 4℃,and the strongest ABTS radical scavenging activity at 25℃,respectively.During in vitro simulated digestion,the sample with 4 mg/100 mL steviol glycosides exhibited the highest retention rate of total anthocyanins.Molecular docking analysis revealed the formation of hydrophobic interactions and hydrogen bonds between stevioside and cyanidin-3-O-glucoside,as well as malvidin-3-O-galactoside.The findings of this study provide a solid foundation for advancing fruit juice processing technologies.
基金supported by the National Key Research and Development Program of China(2023YFF1103800)Key and Major Cultivation Project of Beijing Union University(ZK10202501)Key Technology Research on Identification of Risk Factors and Systematic Evaluation of Edible Safety for Animal-derived Novel Food Resources(2023YFF1103803)。
摘要Long-term use of Sorafenib(SOR)in patients with hepatocellular carcinoma will lead to drug resistance,leading to diarrhea,weight loss and other adverse reactions.Cistanche deserticola,as a homologous substance of medicine and food,its total glycosides(TG)have anti-hepatocellular carcinoma activity.This paper aimed to explore the anti-hepatocellular carcinoma effect of TG combined with SOR on mice and its mechanism.In this study,according to the previous research of experts,the dosage of 30 mg/kg SOR was selected,aiming at giving consideration to the anti-tumor effect and reducing toxicity.Specifically,HepG2 cells were used to establish a subcutaneous tumorigenic model.Histological changes,oxidative stress,immune regulation and intestinal metabolism and microbial composition of mice were detected.It was found TG did not affect the normal growth of mice without any toxic side effects and could synergize with SOR to inhibit tumor growth.Hematoxylin-eosin results found mice in TG group had more complete hepatocyte structure and less pathological changes in liver.The tumor tissue cells became rare and necrotic.TUNEL staining results revealed that TG could significantly promote apoptosis of HepG2 cells,but at a lower level than SOR.In addition,the content of catalase(CAT),superoxide dismutase(SOD)and glutamic-pyruvic transaminase(ALT)increased,aspartate aminotransferase(AST)and alkaline phosphatase(ALP)decreased,indicating TG could effectively reduce liver lesions.TG could also decrease the content of interleukin-2(IL-2),interleukin-17(IL-17),tumor necrosis factor-α(TNF-α),etc.,and increase interferon-γ(IFN-γ),granulocyte-macrophage colony stimulating factor(GM-CSF).Meanwhile,immunohistochemistry was used to observe the decreased expression of Ki67,β-catenin and dishevelled(Dsh)proteins and the increased GSK-3βin the tumor tissues,it was presumed that TG exerted its anti-hepatocellular carcinoma activity through the Wnt/β-catenin signaling pathway.Most importantly,TG could synergize with SOR to regulate metabolic levels in the gut,balance intestinal microbial composition,and increase the abundance of beneficial intestinal bacteria.In conclusion,the results showed that TG(64 mg/kg)could assist SOR(30 mg/kg)to inhibit the development of hepatocellular carcinoma,provide some theoretical basis and technical support.C.deserticola,as a homologous substance of medicine and food,its combination with SOR can provide a new idea for the treatment of hepatocellular carcinoma and its future application potential is worth further exploration and development.
基金supported by grants from the Guizhou Science and Technology Support Project(Qiankehe Support[2020]1Y146)the National Natural Science Foundation of China(no.32002090,32260788)+1 种基金the Guizhou Science and Technology Plan Project(Qiankehe Basics-ZK[2021]General 151,Qiankehe BasicsMS[2025]General 296)the Guizhou University Cultivation Project(Guida cultivation[2019]32).
摘要Tea plant[Camellia sinensis(L.)O.Kuntze]is a globally important crop but is severely threatened by Toxoptera aurantia infestations,which impact yield and safety.However,the response of tea plants to aphid feeding remains largely unexplored.This study investigates the feeding behavior of T.aurantia on different cultivars and identifies‘Huangjinya’and‘Qiancha 1’as susceptible and resistant cultivars,respectively.Transcriptome analysis revealed that CsUGT89A2 was significantly upregulated in response to T.aurantia infestation.In vitro biochemical assays demonstrated that CsUGT89A2 encodes a f lavonoid 7-glycosyltransferase that catalyzes the conversion of f lavonoids and UDP-glucose into f lavonoid 7-O-glucosides.In vivo,silencing CsUGT89A2 significantly reduced f lavonoid glycoside accumulation.To further clarify the role of CsUGT89A2 in tea plant resistance to T.aurantia,we used tobacco and tea f lowers to evaluate aphid feeding and reproduction under chemical treatment,gene silencing,and gene overexpression conditions.Statistical analysis showed that,compared with f lavonoids,the application of f lavonoid 7-O-glycosides significantly reduced T.aurantia reproductive capacity.Furthermore,compared with the control,overexpression of CsUGT89A2 significantly reduced the reproductive ability of aphids,while its silencing increased reproductive rates.Overall,our findings demonstrate that CsUGT89A2 mediates f lavonoid glycosylation and enhances insect resistance in tea plants by increasing f lavonoid glycoside levels,offering new insights into the role of f lavonoid glycosides in the insect resistance of C.sinensis.
基金Guizhou Administration of TCM,Traditional Chinese medicine,Ethnic Medicine Science and Technology Research Special Project,Grant/Award Number:QZYY-2022-008Subsidy Fund for Scientific Research and Innovation Exploration Project,National Natural Science Foundation of China of Guizhou University of Traditional Chinese Medicine,Grant/Award Number:2018YFC170810502+1 种基金Science and Technology Fund Project of Guizhou Provincial Health Commission,Grant/Award Number:gzwkj2023-147Development of animal models for drug discovery-brain diseases.National Research and Development Project of China,MOST,Grant/Award Number:2023YFF0724802.
摘要Background:Qingyangshen(Cynanchum otophyllum C.K.Schneid)is a folk drug for treating depression and other mental disorders induced by social defeat stress.Neuroplasticity in the hippocampus is essential for the modulation of cognition and emotion,and its impairment may contribute to the development and progression of depression.Our previous studies have found that Qingyangshen glycosides(QYS)can improve depression-like behavior in social failure mouse models,mainly through PGC-1α/FNDC5/BDNF signaling pathways activation,but its effects and mechanisms on hippocampal neuroplasticity remain unknown.Methods:Chronic social defeat stress(CSDS)was used to induce social defeat in mice.Morphological changes in the hippocampus were observed by H&E staining and Golgi staining.Immunofluorescence double staining was used to detect the expression of synaptophysin(SYN)and postsynaptic density protein-95(PSD-95),while western blot was employed to evaluate PSD-95,SYN,and doublecortin(DCX)proteins.The pathological processing of social defeat and the therapeutic effects of QYS on it was confirmed through behavioral assessment associated with morpho-logic observation.Results:During the whole study,the sucrose preference indices and OFT activity time of CSDS mice were significantly decreased(p≤0.05),and the tail suspension immobil-ity time was significantly increased(p≤0.05),suggesting that the mice had significant depressive symptoms.Treatment with QYS(25,50,and 100 mg/kg)significantly al-leviated depressive symptoms in CSDS mice,which was demonstrated by significantly(p≤0.05 or p≤0.01)reducing the duration of tail-hanging immobility and increasing the tendency of sucrose preference indices and OFT activity time.QYS treatment also significantly increased the expression of DCX,PSD-95,and SYN proteins,which play a crucial role in depression.Conclusions:QYS alleviated these symptoms by enhancing hippocampal neuroplasti-city through upregulating the expression of synapse-associated proteins(SAPs).The therapeutic mechanism of QYS may involve modulating the neuroplasticity of hip-pocampus neurons by altering the expression of SAPs.
基金supported by the National Natural Science Foundation of China(No.81874369)the Excellent Youth Project of the Hunan Provincial Department of Education(No.22B0388)the Project of Hunan Administration of Traditional Chinese Medicine(No.B2023143)。
摘要Five new flavan-4-ol glycosides jixueqiosides A-E(1-5)and two new flavan glycosides jixueqiosides F and G(6 and 7),along with twelve known flavan-4-ol glycosides(8-19),were isolated from the roots of Pronephrium penangianum.Comprehensive spectral analyses,X-ray single-crystal diffraction,and theoretical electronic circular dichroism(ECD)calculations established structures and absolute configurations.A single crystal structure of flavan-4-ol glycoside(14)was reported for the first time,while the characteristic ECD and NMR data for all isolated flavan-4-ol glycosides(1-5,8-19)were analyzed,establishing a set of empirical rules.Activity screening of these isolates showed that 8 and 9 could inhibit the proliferation of MDA-MB-231 and MCF-7 cells with IC50 values of 7.93±2.85μmol·L-1and 5.87±1.58μmol·L-1(MDA-MB-231),and 2.21±1.38μmol·L-1and 3.52±1.55μmol·L-1(MCF-7),respectively.Western blotting and flow cytometry analyses demonstrated that 8 and 9 dose-dependently induced apoptosis in MDA-MB-231 cells by up-regulating BAX,activating caspase-3 and down-regulating BCL-2.Additionally,compound 8 affected autophagy-related proteins,increasing the ratio of LC3-II/LC3-I and Beclin-1 levels to inhibit MDA-MB-231 cell proliferation.Moreover,anti-inflammatory studies indicated that 2,3,7,13,14,and 18 moderately inhibited tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),and nitric oxide(NO)release.
基金supported by grants from the National Natural Science Foundation of China(32460505)China Agriculture Research System(CARS-11)+2 种基金the Chinese Academy of Tropical Agricultural Sciences for the Science and Technology Innovation Team of the National Tropical Agricultural Science Center(CATASCXTD202301)Additional support was provided by the Hainan Province Graduate Innovation Research Project(Hyb2020-09)the Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation(KF-2023016).
摘要The high content of cyanogenic glycosides(CG)in cassava tubers affects food safety.CG are involved in the plant growth and development and protect cassava leaves from herbivorous predators.However,the regulatory mechanism of CG biosynthesis remains poorly understood.Here,yeast one-hybrid assays were performed using a mixed cDNA library of cassava tubers and leaves as prey and the promoter of MeCYP79D2 as bait.MeCYP79D2,a cytochrome P450 protein,is the rate-limiting enzyme for CG synthesis in cassava.From this information,a candidate regulator of MeCYP79D2 was selected and identified as transcription factor MePHD1.2.MePHD1.2,located in the nucleus and exhibiting an inhibitory transcription activity directly bound to an AT-rich motif in the promoter of MeCYP79D2.In cassava,the transcriptional activity of MeCYP79D2 was considerably enhanced in mephd1.2 mutant lines leading to increased linamarin and lotaustralin contents.Deletion of MePHD1.2 promoted the production of CGs in cassava and decreased transcription inhibition on MeCYP79D2,exposing a novel regulatory module governing biosynthesis of CGs.
摘要Withering is a crucial step in tea production that reduces the moisture content and induces biochemical changes in tea leaves.The withering process triggers oxidative stress by accumulating reactive oxygen species(ROS)in tea leaves.The presence of flavonol glycosides is crucial for tea quality and tea's stress response to environmental changes pre-and post-harvest.However,the role of flavonol glycosides during withering remains unexplored.The degradation of flavonol glycosides during withering is mainly attributed to the enzymatic antioxidant defense system,which produces flavonol aglycones and soluble sugars that protect leaf cells from oxidative stress.This degradation contributes to a sweeter taste and enhances the taste and aroma of tea.This review emphasizes the role of the withering process and the degradation of flavonol glycosides,highlighting their role in neutralizing ROS formation as a response to oxidative stress,and discusses how changes in flavonol glycosides contribute to the taste of tea.The importance of the withering process in the degradation of flavonol glycosides is also highlighted.Further research is needed to understand the dynamic changes of flavonol glycosides during the withering process,which is essential to improving tea quality.
基金supported by the Qi-Huang Chief Scientist Project of the National Administration of Traditional Chinese Medicine(2020).
摘要Phytochemical study of the n-BuOH extract of Ilex asprella resulted in the discovery of ten new pentacyclic triterpenoid glycosides,comprising nine ursane-type glycosides(1-9)and one oleanane-type glycoside(10),along with seven known compounds(11-17).Compound 1 is the first reported 19,22-epoxy ursane triterpenoid glycoside,whereas 4 and 5 are rare examples of ursane triterpenoid glycosides containing a 28,19-lactone group.The structural characterization of these compounds was achieved using spectroscopic and chemical techniques,as well as single-crystal X-ray analysis.Compounds 7,12,15,and 17 exhibited moderate cytotoxic activities against H1975 and HCC827 cancer cells.
基金supported by grants from the National Natural Science Foundation of China(82274039,82404792)Science and Technology Department of Sichuan Province(2021YFYZ0012-5)+2 种基金the Innovation Team and Talents Cultivation Program of National Administration of Traditional Chinese Medicine(ZYYCXTD-D-202209)Natural Science Foundation of Sichuan Province(2023NSFSC0660,2023NSFSC1770)the Xinglin Talent Program of Chengdu University of Traditional Chinese Medicine(TCMQJJJ2023010,QJRC2021011).
摘要Safflower,an economic crop,is renowned for its flowers,which are widely used in medicines for treating cardiovascular and cerebrovascular diseases and in dyes for food and industry.The utility of safflower depends on its flavonoid glycosides.Therefore,the biosynthesis of safflower flavonoid glycosides has been a focus of attention,but the present mechanisms remain poorly understood.This study aims to identify functional genes associated with flavonoid glycoside biosynthesis in safflower through a comprehensive approach that integrates whole-genome screen and multi-omics correlation studies.CYP and UGT are two crucial gene families involved in flavonoid glycoside biosynthesis.We have screened 264 CYP genes and 140 UGT genes in the genome of safflower and conducted analyses including phylogenetic relationships,conserved motifs,gene structures,cis-acting elements,and chromosome mapping,which provided extensive and comprehensive data on the CYP and UGT gene families.Integration of phenotype and metabolic data from different safflower tissues helped narrow down the screening by confirming that HSYA is synthesized only in flowers.Based on the gene expression patterns and phylogenetic analysis,CtOGT1 was ultimately identified,which could catalyze the generation of glycosides using various flavonoid substrates and exhibited strong substrate affinity.Moreover,molecular docking studies elucidated CtOGT1’s highly active intrinsic mechanism.In conclusion,this study effectively identified genes responsible for flavonoid glycoside biosynthesis in safflower through the integration of whole-genome screen and multi-omics analysis,and established a comprehensive foundation of data,methodology,and experimental evidence for further elucidating the pathways of safflower flavonoid glycoside biosynthesis.
基金supported by the National Natural Science Foundation of China(Nos.81673567 and 81703382)
摘要The present study was designed to develop a practical strategy to tackle the problem of lacking standard compounds and limited references for identifying structure-related compounds in Streptocaulon griffithii Hook. f., especially those in trace concentrations, with a focus on antitumor activity. The cardiac glycosides(CGs)-enriched part was determined using in vitro bioactive assays in three cancer cell lines and then isolated using macroporous resins. The MS and MS/MS data were acquired using a high performance liquid chromatography coupled with hybrid quadrupole-time of flight(HPLC-Q-TOF-MS) system. To acquire data of trace compound in the extract, a multiple segment program was applied to modify the HPLC-Q-TOF-MS method. A mass defect filter(MDF) approach was employed to make a primary MS data filtration. Utilizing a MATLAB program, the redundant peaks obtained by imprecise MDF template calculated with limited references were excluded by fragment ion classification, which was based on the ion occurrence number in the MDF-filtered total ion chromatograms(TIC). Additionally, the complete cleavage pathways of CG aglycones were proposed to assist the structural identification of 29 common fragment ions(CFIs, ion occurrence number ≥ 5) and diagnostic fragment ions(DFIs, ion occurrence number < 5). As a result, 30 CGs were filtered out from the MDF results, among which 23 were identified. This newly developed strategy may provide a rapid and effective tool for identifying structure-related compounds in herbal medicines.
基金Natural Science Foundation of Hebei Province of China(Grant No.C2011206158,08B031)Hundreds of Innovative Talents Project of Hebei Education Department of China
摘要A simple, sensitive and specific high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)method combined with solid phase extraction has been developed and validated for the simultaneous quantification of paeoniflorinand albiflorin in rats plasma and tissue homogenate after administration of total glycosides of paeony (TGP). Chromatographicseparation was achieved on a C15 column (150 mmx4.6 mm, 5 pro) with mobile phase consisted of acetonitrile-0.05% formicacid aqueous (20: 80, v/v) at a flow rate of 0.5 mL/min. The analytes were detected with triple-quadrupole mass spectrometer usingturbo ion spray with negative ionization in the multiple reaction-monitoring (MRM) modes. The results of method validationconformed to the requirements for the determination of biological samples. This method was successfully applied to thepharmacokinetics and tissue distribution study of TGP in rats. The results showed that paeonifiorin and albiflorin wereabsorbed and reached peak value quickly, and had the similar pharmacokinetic characteristics. Both of them underwent a rapid andwide distribution in the tissues throughout the whole body, among which stomach was the main distribution tissue. Moreover, theyhad the ability to cross the blood-brain barrier.
基金supported by the Natural Science Foundation of Shanghai City,China(No.10411969800)the National Nature Science Foundation of China(Nos.81202866 and 81302856)
摘要AIM: To develop and validate a high performance liquid chromatography(HPLC) coupled with diode array and evaporative light scattering detectors(DAD-ELSD) method for the quantitative determination and fingerprint analysis of ten active constituents in three chemical classes(namely, xanthone glycosides, steroidal saponins, and alkaloids) in Zhimu-Huangbai herb pair(ZB). METHOD: Chromatographic separation was performed on a Diamonsil C18 column(4.6 mm × 250 mm, 5 μm, Dikma) by gradient elution using acetic acid in acetonitrile solution at a flow rate of 1.0 mL·min–1 at 260 nm. The drift tube temperature of ELSD was set to 60 ℃ and nebulizer gas pressure was 4.0 Bar. Method validation was performed to assure its linearity, limits of detection and quantification, precision, repeatability, stability, and accuracy. RESULTS: The HPLC-DAD-ELSD method allowed the quantification of ten compounds(phellodendrine, jatrorrhizine, palmatine, berberine, neomangiferin, mangiferin, timosaponin E-I, timosaponin B-II, timosaponin B, and timosaponin A-III), and was successfully applied to fingerprint analysis for ten batches of ZB samples. CONCLUSION: This was the first time to apply the combination of DAD and ELSD for the simultaneous determination of ten active ingredients in ZB. The results showed that the combination of quantitative analysis for marker ingredients and chemical fingerprint for the TCM herb pair provides a potentially powerful, widely introduced, and internationally accepted strategy for assessment of complex TCM formulas.
基金supported by the National Natural Science Foundation of China,No.30960520the Natural Science Foundation of Inner Mongolia Autonomous Region of China,No.2016MS0837
摘要Glycosides of Cistanche(GC)is a preparation used extensively for its neuroprotective effect against neurological diseases,but its mechanisms of action remains incompletely understood.Here,we established a bilateral common carotid artery occlusion model of vascular dementia in rats and injected the model rats with a suspension of GC(10 mg/kg/day,intraperitoneally)for 14 consecutive days.Immunohistochemistry showed that GC significantly reduced p-tau and amyloid beta(Aβ)immunoreactivity in the hippocampus of the model rats.Proteomic analysis demonstrated upregulation of mitochondrial precursor protein and downregulation of keratin type II cytoskeletal6A after GC treatment compared with model rats that had received saline.Western blot assay confirmed these findings.Our results suggest that the neuroprotective effect of GC in vascular dementia occurs via the promotion of neuronal cytoskeleton regeneration.
基金National Key Project of Scientific and Technical Supporting Programs funded by Ministry of Science & Technology of China(No.2006BAD31B05).
摘要From the roots ofPicrorhiza scrophulariiflora, two new secoifidoid glycosides, named picrosecosides Ⅰ and Ⅱ (1, 2) have been isolated. Their structures were elucidated on the basis of chemical and spectropic evidences.
基金National Key R&D Program of China(Grant Nos.2017YFC1702400,2018YFC1707300 and 2018YFC1707904)
摘要In the present study, a method for the quantitative analysis of multi-components by single marker(QAMS) has been developed and validated for the simultaneous determination of echinacoside(ECH), tubuloside A, acteoside, isoacteoside, and2’-acetylacteoside in Cistanches Herba. ECH was used as the internal standard(IS) to obtain the relative correction factors(RCFs) of the other four phenylethanoid glycosides(PhGs);meanwhile, various influencing factors on RCFs were investigated under different conditions. The content of each component was calculated with RCF. The results were compared with those obtained by the external standard method(ESM) to verify the feasibility and accuracy of the established QAMS method. No significant difference was found in the quantitative results of 10 batches of Cistanches Herba between QAMS and ESM. The proposed QAMS method for simultaneous determination of PhGs in Cistanches Herba is accurate and feasible, providing an efficient and economical approach for the quality control of Cistanches Herba.
基金supported by the Natural Science Foundation of Jiangsu Science and Technology Department(No.BK2001219)
摘要Two new flavonoid glycosides were isolated from the flowering heads of Chrysanthemum morifolium. Their structures were determined to be luteolin 4'-methoxy-7- O-(6"-O-acetyl)-β-D-glucopyranoside (1) and acacetin 7-O-(3"-O-acetyl)-β-D-glucopyranoside (2) by means of 1H and 13C NMR spectroscopic analysis, including 2D NMR technique.
基金funded by the National Natural Science Foundation of China (81760776)the Natural Science Foundation of Inner Mongolia Autonomous Region (2018ZD13)+2 种基金the Natural Science Foundation of Inner Mongolia Autonomous Region (2020MS08070)Science and technology development projects in key areas of Baotou science and technology plan (2020Z1016-3)Natural Science Foundation Project of Inner Mongolia Autonomous Region (2021MS03025)。
摘要Cymbaria daurica L. is a well-known traditional Mongolian medicine, which has been used to treat diabetesrelated conditions characterized by persistent thirst and hunger, copious urination, and weight loss. We aimed to investigate the protective effects of C. daurica extracts and phenylethanoid glycosides including verbascoside and isoacteoside on INS-1 cells. We discovered phenylethanoid glycosides from n-butanol extract with large content through extraction and separation. We continue to study the protective effects of phenylethanoid glycosides including verbascoside and isoacteoside on INS-1 cells. INS-1 cells were treated with C. daurica, cell viability assay, RNA-seq technology, superoxide dismutase activity and malonaldehyde content, quantitative real time-PCR and Western blot analysis were used to study the protective effects of C. daurica. Cell viability assay resulted that n-butanol extract and verbascoside, isoacteoside showed protective effects of C. daurica. According to the RNA-seq technology to identify the differentially expressed genes in INS-1 cells, the pathway of gene enrich the protective effect of C. daurica on oxidative stress. SOD activity and the content of MDA indicated that C. daurica could enhance the antioxidant capacity of INS-1 cells. Further investigation indicated C. daurica alleviate oxidative stress by inhibiting INS-1 cell apoptosis. C. daurica may play an anti-diabetic role by inhibiting islet cell apoptosis.
摘要Two new phenolic glycosides,2,3-dihydroxybenzoic acid methyl ester 3-O-β-o-glucopyranosyl-(1-6)-β-D-glucopyranoside(1)and 2,5-dihydroxylbenzofuran 5-O-β-D-xylopyranosyl-(1-6)-O-β-D-glucopyranoside(2),were isolated as the minor chemical constituents from the roots of Gentiana rigescens,along with 15 known compounds.Their structures were elucidated by detailed spectroscopic analysis,including 1D,2D NMR and chemical method.All of these compounds were isolated for the first time from the title plant.Moreover,compounds 1 and 2 were tested for the antifungal activities on three plant pathogens Peronophythora litchi,Glomerella cingulata,and Glorosprium musarum.
基金supported by the National Science and Technology Development Fund(No.2009ZX09301-007)the Scientific Research Projects of Shannxi Academy of Sciences(No.2016K-17)+4 种基金the Projects of Shaanxi Provincial Science and Technology Department(No.2016SF-264)Special Fund for Agro-scientific Research in The Public Interest(Grant 389,No.201203062)Support Plan for Young 392 Talents of Science and Technology Association of Colleges and Universities in Shaanxi Province 393(No.20150105)Key Research and Development Plan Project of Shaanxi Province(No.2018SF-034)Scientific Research from Shaanxi Provincial Department of Education(Nos.14JS100 and 17JK0243)
摘要Two new flavonoid glycosides, named viscumneoside XⅡ(1), and viscumneoside XⅢ(2);a new dihydrogen flavonoid glycoside product named viscumneoside XⅣ(3), were isolated from the aerial part of Viscum album, along with seven known compounds(4-10). Their structures were identified by analysis of spectroscopic data. In addition, cytotoxicity assay showed that 1, 2 and 3 possessed significant inhibitory activities against C6, A549 and MDA-MB-231(the inhibition rate arrived about 50%, 70% and74% respectively with IC50 ≤ 60.00 μmol·L^-1), while the inhibition of TF-1 and Hela was not significant.