Objectives:The phytochemical investigation of traditional herbal medicines holds significant promise for modern drug discovery,particularly in cancer therapy.This study aimed to evaluate the cytotoxicity,apoptosis ind...Objectives:The phytochemical investigation of traditional herbal medicines holds significant promise for modern drug discovery,particularly in cancer therapy.This study aimed to evaluate the cytotoxicity,apoptosis induction,and immune-modulatory activities of extracts from three herbal medicines with historical use in traditional medicine—Acanthopanax sessiliflorus,Phragmites communis,and Pinus densiflora,as well as their combined extract(GMAS 01/COM),on human lung cancer cells(A549)and normal cell lines,including murine macrophages(RAW 264.7)and human keratinocytes(HaCaT).Methods:Plant extracts were prepared using aqueous extraction,sonication,and rotary evaporation.The total phenolic and flavonoid contents were quantified using the Folin-Ciocalteu and AlCl3 colorimetric methods,respectively.Antioxidant potential was evaluated via 2,2-Diphenyl-1-picrylhydrazyl(DPPH)scavenging and reducing power assays.Cytotoxicity was assessed using an MTT assay,while reactive oxygen species(ROS)generation was quantified using a 2′,7′-Dichlorodihydrofluorescein diacetate(DCFH-DA)assay.Anticancer properties,including colony formation inhibition and migration suppression,were examined using colony formation and wound healing assays.The expression of apoptotic and inflammatory mediators was analysed through qPCR.Results:GMAS 01 selectively induced apoptosis in A549 cells without cytotoxic effects on RAW264.7 and HaCaT cells.Mechanistically,it elevated intracellular ROS and activated the intrinsic mitochondrial apoptotic pathway,evidenced by p53 upregulation,increased Bax,and decreased Bcl-2 expression.GMAS 01 also significantly inhibited colony formation and migration in A549 cells.In RAW264.7 cells,it reduced nitric oxide(NO)production and downregulated iNOS,COX-2,IL-6,and IL-8,indicating strong immunomodulatory activity.Conclusion:GMAS 01 exhibits potent antioxidant,anti-inflammatory,and anticancer effects,likely mediated through ROS-induced mitochondrial apoptosis.However,mechanistic interpretations are limited by the absence of protein-level validation and pathway inhibition studies.Upcoming studies should aim to verify the underlying mechanisms and evaluate their potential for real-world application.展开更多
Aim An HPLC method for analyzing eleutheroside B (ELU B) and eleutheroside E(ELU E) , two of the main active substances of Acanthopanax preparations were studied. Methods Thesamples were analyzed on a kromasil ODS col...Aim An HPLC method for analyzing eleutheroside B (ELU B) and eleutheroside E(ELU E) , two of the main active substances of Acanthopanax preparations were studied. Methods Thesamples were analyzed on a kromasil ODS column with water-acetonitrile as a gradient mobile phase.The flow rate was 0.8 mL·min^(-1) and detecting wavelengths were 206 nm for ELU B, 220 nm for ELUE, solid phase extraction (SPE) and internal standard-salicin were selected. Results The recoveriesof Acanthopanax tablets and injection were 90.4% - 96.8% and 96.4% - 99.8% for ELU B, 87.7% -93.3%and 95.7% - 98.5% for ELU E, respectively. The linear ranges were 4.45 - 22.25 μg· mL^(-1) (r =0.999 8) and 5.11 - 25.55 μg·mL^(-1) ( r = 0.999 7) respectively. Conclusion This method can savethe time for cleaning the chromatographic system and improve sensitivity for Acanthopanaxpreparations , thus providing a way to evaluate the quality of Acanthopanax preparations.展开更多
Adsorptive resin was used to extract syringin from Acanthopanax senticosus, and the content of syringin was assayed by HPLC. Some factors affecting the extraction efficiency such as resin type, resin amount, eluent ty...Adsorptive resin was used to extract syringin from Acanthopanax senticosus, and the content of syringin was assayed by HPLC. Some factors affecting the extraction efficiency such as resin type, resin amount, eluent type, eluent flow rate and amount were examined. The optimal purification condition was selected.展开更多
AIM To examine the effects of Acanthopanax senticosus polysaccharides(ASPS) on intestinal tight junction(TJ) disruption and nuclear factor-kappa B(NF-κB)/myosin light chain kinase(MLCK) activation in endotoxemia.METH...AIM To examine the effects of Acanthopanax senticosus polysaccharides(ASPS) on intestinal tight junction(TJ) disruption and nuclear factor-kappa B(NF-κB)/myosin light chain kinase(MLCK) activation in endotoxemia.METHODS BALB/C mice(6-8-weeks-old) received continuous intragastric gavage of ASPS for 7 d before injection of lipopolysaccharide(LPS), or received ASPS once after LPS injection. Blood and intestinal mucosal samples were collected 6 h after LPS challenge. Clinical symptoms, histological injury, intestinal permeability,TJ ultrastructure, and TJ protein expression were determined.RESULTS Compared with mice in the LPS group, pretreatment with ASPS improved clinical and histological scores by 390.9%(P < 0.05) and 57.89%(P < 0.05), respectively, and gut permeability change in endotoxemic mice was shown by a 61.93% reduction in reduced leakage of fluorescein isothiocyanate-dextran 6 h after LPS injection(P < 0.05). ASPS pretreatment also prevented LPS-induced TJ ultrastructure breakdown supported by increased electron dense materials between adjoining cells, sustained redistribution and expression of occludin(0.597 ± 0.027 vs 0.103 ± 0.009, P < 0.05) and zonula occludens-1(0.507 ± 0.032 vs 0.125 ± 0.019, P < 0.05), and suppressed activation of the NF-κB/MLCK pathway indicated by reduced expression of NF-κB, phospho-inhibitor kappa B-alpha, MLCK and phospho-myosin light-chain-2 by 16.06%(P < 0.05), 54.31%(P < 0.05), 66.10%(P < 0.05) and 64.82%(P < 0.05), respectively. CONCLUSION ASPS pretreatment may be associated with inhibition of the NF-κB/MLCK pathway and concomitant amelioration of LPS-induced TJ dysfunction of intestinal epithelium in endotoxemia.展开更多
BACKGROUND： Acanthopanax senticosus, a plant of the Araliaceae family, is used in traditional Chinese medicine. It can be used to replenish Qi, strengthen the spleen, tonify the kidney, and relieve mental strain. OBJ...BACKGROUND： Acanthopanax senticosus, a plant of the Araliaceae family, is used in traditional Chinese medicine. It can be used to replenish Qi, strengthen the spleen, tonify the kidney, and relieve mental strain. OBJECTIVE： To observe effects ofAcanthopanax senticosus on learning and memory in a mouse model of Alzheimer＇s disease and abnormal biochemical changes in the brain tissue. DESIGN： A completely randomized grouping, controlled animal experiment. SETTING： Department of Preventive Medicine, School of Basic Medical Sciences, Yanbian University. MATERIALS： A total of 50 Kunming mice, aged 1-1.5 months, equal numbers of males and females, were provided by the Laboratory Animal Center, Yanbian University Medical College. The study was performed in accordance with ethical guidelines for the use and care of animals. Acanthopanax was provided by Yanbian Chengda Pharmaceutical Co., Ltd. Acanthopanax senticosus （0.5 kg） was soaked in water for 1 hour and transferred to 1.5 kg distilled water for extraction. It was boiled for 1 hour and extracted after 1 hour of boiling. The procedure was repeated 3 times. The extract was condensed to 500 mL and then adjusted to 500 and 1000 g/L with water. Piracetam tablets were produced by Shandong Luoxin Pharmaceutical Corporation, China. Malonaldehyde （MDA）, superoxide dismutase （SOD）, and acetylcholinesterase （ACHE） kits were purchased from Nanjing Jiancheng Bioengineering Co., Ltd., China. METHODS： This study was performed at the Department of Preventive Medicine, School of Basic Medical Sciences, Yanbian University from January to June 2007. All mice were randomly divided into 5 groups with 10 mice in each： control group, model group, low-, and high-dose Acanthopanax senticosus-treated groups, and piracetam-treated group. All groups were administered 0.1 mL/10 g. In the control and model groups, mice were intragastrically administered saline each morning for 5 days prior to experimentation. Five days later, they were intraperitoneally perfused with saline and aluminum trichloride （100 mg/kg）, respectively, every other afternoon. In the low- and high-dose Acanthopanax senticosus-treated groups, as well as the piracetam-treated groups, mice were intragastrically administered 500 and 1 000 g/L Acanthopanax senticosus and 23 g/L piracetam suspension, respectively, every morning. Five days later, they were intraperitoneally perfused with aluminum trichloride （100 mg/kg） every other afternoon, 20 successive times. MAIN OUTCOME MEASURES： On days 20, 23, 26, and 29 after treatment, time-to-platform, number of errors, and accuracy were measured by water maze. After anesthesia, mice were euthanized and whole brain tissues were immediately resected and homogenized. MDA levels, and SOD and AChE activities, were measured using the corresponding kits. RESULTS： Fifty mice were included in the final analysis. In the model group, accuracy increased, and time-to-platform was prolonged, compared to control group （P 〈 0.05 0.01）. In the model group, MDA levels significantly increased （P 〈 0.05）, while SOD activity significantly decreased （P 〈 0.01）, compared to control group. MDA levels were significantly lower and SOD activity was significantly higher in the low- and high-dose Acanthopanax senticosus-treated groups, compared to the model group （P 〈 0.05 0.01）. In the model group, AChE activity significantly increased, compared to the control group （P 〈 0.05）, AChE activity was significantly lower in the high-dose Acanthopanax senticosus-treated and the piracetam-treated groups than in the model group （P 〈 0.05）. CONCLUSION： Acanthopanax senticosus can improve learning and memory in a mouse model of Alzheimer＇s disease, and concomitantly increase SOD activity, inhibit AChE activity, and decrease MDA levels.展开更多
AIM: To investigate the cytotoxicity, anti-inflammatory activity, and action mechanism of root bark extracts of Acanthopanax henryi. METHOD: The hot methanol extract of the root bark of A. henryi was subjected to XAD-...AIM: To investigate the cytotoxicity, anti-inflammatory activity, and action mechanism of root bark extracts of Acanthopanax henryi. METHOD: The hot methanol extract of the root bark of A. henryi was subjected to XAD-4 column chromatography eluting with a gradient of methanol in water. The cytotoxicity and anti-inflammatory effects of the MeOH fractions were evaluated on the inhibition on lipopolysaccharide(LPS)-induced nitric oxide, prostaglandin E2, interleukin-1β, and interleukin-6 production in RAW 264.7 macrophages. RESULTS: The 80% MeOH fraction was a better inhibitor of LPS-induced NO, PGE2, IL-1β, and IL-6 production, and expression of inducible nitric oxide synthase(iNOS) at the protein levels in a concentration-dependent manner. CONCLUSION: The 80% MeOH fraction of A. henryi root bark has significant anti-inflammatory activity. This provides a pharmacological basis for clinical application for the treatment of inflammation.展开更多
Random Amplified Polymorphic DNA (RAPD) analysis is a new technology of molecular marking which has proved very powerful in detecting genetic diversity at the level of population. The genomic DNAs used in our experime...Random Amplified Polymorphic DNA (RAPD) analysis is a new technology of molecular marking which has proved very powerful in detecting genetic diversity at the level of population. The genomic DNAs used in our experiment were extracted from fresh leaves taken from 59 individuals sampled from three natural populations in Yan An, Shanxi Province. Through more than 2,000 PCRs, deep-going RAPD analysis was carried out on DNA samples from 49 inviduals. The percentage of polymorphic RAPD loci found in these three populations were respectively 27.2 %, 18.6 % and 5.4 %; the average genetic distances within population, 0.055, 0.036 and 0.008; the average genetic distances between populations (Ⅰ-Ⅱ), (Ⅰ-Ⅲ) and (Ⅱ-Ⅲ), 0.105, 0.096 and 0.060. The genetic diversity of A. brachypus within and between populations was found, for the first time, to be rather poor,thus revealing innate factors as the cause contributing to its endangered status. In addition, our work also provides basic materials for elucidating the underlying cause of its endangerment and for its protection biology.展开更多
OBJECTIVE:To investigate the gastroprotective effects of Acanthopanax senticosus leaves(ASLs)extrusion on acute gastric mucosal lesion in rats induced by compound 48/80(C48/80).METHODS:Rats were divided into six group...OBJECTIVE:To investigate the gastroprotective effects of Acanthopanax senticosus leaves(ASLs)extrusion on acute gastric mucosal lesion in rats induced by compound 48/80(C48/80).METHODS:Rats were divided into six groups:normal;C48/80-induced gastric lesion control;gastric lesion positive control(famotidine 4 mg/kg);gastric lesion administered with two levels of extruded ASLs(ASLE,40 and 200 mg/kg);and gastric lesion treated with ASLs(ASL 200 mg/kg).Mucus secretion/damage was determined by immunohistological staining.Immunofluorescence and western blotting were performed to determine gastric mucosal Bax and Bcl-2 expression.Gastric mucosal oxidative-stress-related enzymes and malondialdehyde were determined.RESULTS:C48/80-induced mucus depletion and inflammation in the gastric mucosa were significantly attenuated by ASLs.The increased serum serotonin and histamine concentrations in C48/80-treated rats were also attenuated by ASLs.Gastric mucosal Bax protein expression was increased and Bcl-2 expression was decreased after C48/80 treatment,and ASLs ameliorated Bax and Bcl-2 expression.The extrusion process significantly augmented the effects of ASLs in a dosedependent manner.ASLEs at 200 mg/kg normalized mucus damage/secretion,C48/80-induced increases of mucosal myeloperoxidase activity(index of inflammation),xanthine oxidase,and malondialdehyde content(index of lipid peroxidation).The effects of ASLs on Bax and Bcl-2expression were also enhanced by extrusion.Furthermore,these effects of ASLEs at 200 mg/kg were similar to those of famotidine,a histamine H2-receptor antagonist commonly used to treat gastric ulcers.CONCLUSION:ASLEs prevented acute gastric mucosal lesion progression induced by C48/80,possibly by inducing mucus production,and reduced inflammation and oxidative stress in gastric mucosa through an anti-apoptotic mechanism.展开更多
Acanthopanax senticosus aqueous extract, at 10, 5 and 2.5 μg/mL, lessened hypoxia-induced PC12 cell injury. Pretreatment with the extract upregulated Bcl-2 expression, downregulated Bax expression, elevated superoxid...Acanthopanax senticosus aqueous extract, at 10, 5 and 2.5 μg/mL, lessened hypoxia-induced PC12 cell injury. Pretreatment with the extract upregulated Bcl-2 expression, downregulated Bax expression, elevated superoxide dismutase activity, diminished malondialdehyde content, relieved Ca2＋ overloading, and suppressed apoptosis of PC12 cells. These effects were most pronounced at 10 μg/mL. These results suggest that Acanthopanax senticosus aqueous extract protects PC12 cells from hypoxia-induced injury in a dose-dependent manner.展开更多
The kaurenoic acid-type diterpenoids in Acanthopanacis Cortex have been reported to be the major active components. However, the diterpenoids are present as position isomers that exacerbate the challenges in obtaining...The kaurenoic acid-type diterpenoids in Acanthopanacis Cortex have been reported to be the major active components. However, the diterpenoids are present as position isomers that exacerbate the challenges in obtaining standards compounds. Little work has been done on the quantitative analysis of the diterpenoids in the herb. In the present study, two diterpenoid isomers ent-16βH,17-isovalerate-kauran-19-oic acid(1) and ent-16βH,17-methyl butanoate-kauran-19-oic acid(2) with high purity were separated by analytical HPLC, followed by recrystallization in acetone. Furthermore, an HPLC-ELSD method was developed and validated for simultaneous determination of 1 and 2 in 9 batches of Acanthopanacis Cortex samples. The HPLC separation and quantification was achieved in 40 min using an Agela Promosil C18 column eluted with a gradient of water and acetonitrile. The calibration curves showed good linearity(r^2 ≥ 0.999 9) within the test ranges. The LOD ranged from 0.407 2 to 0.518 0 mg and LOQ ranged from 1.018 0 to 1.295 0 mg. The precisions(%RSD) were within 1.47% for the two isomers. The recovery of the assay was in the range of 98.78%-99.11% with RSD values less than 2.76%. It is the first time to establish a quantitative HPLC method for the analysis of the bioactive kaurenoic acid isomers in the herb.展开更多
Three new compounds named (2E)prenyl benzoate-4-O-α-L-arabinopyranosyl (1→6) β-D-glucopyranoside (1), 7-methoxy-8-O-β-D-glucopyranosyl coumarin (2), and 3,4'-dihydroxy-3'-methoxy benzenepentanoic acid (3) ...Three new compounds named (2E)prenyl benzoate-4-O-α-L-arabinopyranosyl (1→6) β-D-glucopyranoside (1), 7-methoxy-8-O-β-D-glucopyranosyl coumarin (2), and 3,4'-dihydroxy-3'-methoxy benzenepentanoic acid (3) were isolated from the leaves of Acanthopanax senticosus Harms. The structures of new compounds were determined by means of 2D NMR experiments and chemical methods.展开更多
Acanthopanax trifoliatus( L.) Merr is a common traditional Chinese herbal medicine in central and southern regions of China. It has high medicinal and edible value and mainly contains flavonoids,polysaccharides,saponi...Acanthopanax trifoliatus( L.) Merr is a common traditional Chinese herbal medicine in central and southern regions of China. It has high medicinal and edible value and mainly contains flavonoids,polysaccharides,saponins and volatile components. Its active extracts have antioxidant,anti-inflammatory,anti-fatigue,and analgesic effects. From the biological characteristics,effective chemical components,extraction methods,cultivation techniques,pharmacological effects,toxicological activities,and product development status,this paper reviewed in detail the research status of A. trifoliatus in China and abroad,to provide a scientific basis for in-depth research and development,and utilization of A. trifoliatus.展开更多
To study the stereostructure by X-ray and the technology of extracting acankoreanogenin from the leaves of Acanthopanax graeilistylus W. W. Smith （AGS）, the crystal structure was measured with a Bruker APEX-Ⅱ area-...To study the stereostructure by X-ray and the technology of extracting acankoreanogenin from the leaves of Acanthopanax graeilistylus W. W. Smith （AGS）, the crystal structure was measured with a Bruker APEX-Ⅱ area-detector diffractometer instrument and the technology of extracting in combination hydrolysis in situ （ECHS） was compared with these of traditional methods. The crystal belongs to the monoclinic system, space group P2b with unit cell parameters： a=（8.3652±0.0006） nm, b=（24.721±0.002） nm, and c=（14.5587±0.0011） nm, α=90°, β=97.850 （4） °, γ=90 °, V=2982.51 nm3, Dc= 1.179 mg/m3, and the molecular number （Z） of elementary structures was 2. The comparisons show that the extraction rate of acankoreanogenin with ECHS methods is much higher than that of traditional methods. Then, central composite design-response surface methodology （CCD-RSM） was adopted for optimizing the extraction rate of ECHS methods. The optimized values of extraction parameters are as follows： for the for extraction process of acid hydrolysis are that extraction time 110.8 min, solvent-herb ratio 11.5 and acid content 5.25%; the best extraction process of basic hydrolysis are that extract time 120 min, solvent-herb ratio 8.7 and the alkali content 8.79%. Finally, the extracts were purified with decolorizing carbon after alkali solution and acid-isolation and purity of acankoreanogenin was 98.7%.展开更多
Flavonols were extracted from Acanthopanax Senticosus Harms by Soxhlet extraction（SE）,atmospheric pressure microwave-assisted extraction（AMAE） and pressurized microwave-assisted extraction（PMAE）.The influences o...Flavonols were extracted from Acanthopanax Senticosus Harms by Soxhlet extraction（SE）,atmospheric pressure microwave-assisted extraction（AMAE） and pressurized microwave-assisted extraction（PMAE）.The influences of experimental conditions,such as concentration of ethanol in the eluent,microwave irradiation time,etc.on the extraction yield were studied.Four flavonols（hyperin,rutin,quercitrin and quercetin） in the extracts were determined quantitatively by HPLC method.The experimental results demonstrate the advantages of PMAE and AMAE over those of conventional SE,that is the extraction time is dramatically reduced,and the yields of flavonols are effective improved.Although the yield of flavonols is higher and the extraction time is shorter by PMAE than those of AMAE,flavonols are easy to be decomposed over a certain time.展开更多
Differences in germination of .A. Senticosus, an important shrub under the Korean Pine broad-leavd forest and its secondary forest in heterogeneous habitats and the dynamics of its seed pool have been studied by obser...Differences in germination of .A. Senticosus, an important shrub under the Korean Pine broad-leavd forest and its secondary forest in heterogeneous habitats and the dynamics of its seed pool have been studied by observations in location. The results showed that transformation rates from seeds to seedlings were in the following order : 16.8% in Larch plantations, 4. 1% in Mongolian oak forests, 2.7% in Birch forests, 1.8% in Korean Pine plantations, and 0.5% in hard wood forests.The life-span of seeds was determined to be four years in the simulating seed pool under Larch plantations. The percentage of the seedling output was, 14.5% in the 2nd year, 10. 1% in the 3rd year, and 1 .8% in the 4th year. Other types of the seed output were those f decayed 33. 1 %, senescent, 22.3%,predated by mice 14. 1%, which was variable due to the variation in the number of mouse, and only 1. 17% were eaten by insects and other soil animals.展开更多
文摘Objectives:The phytochemical investigation of traditional herbal medicines holds significant promise for modern drug discovery,particularly in cancer therapy.This study aimed to evaluate the cytotoxicity,apoptosis induction,and immune-modulatory activities of extracts from three herbal medicines with historical use in traditional medicine—Acanthopanax sessiliflorus,Phragmites communis,and Pinus densiflora,as well as their combined extract(GMAS 01/COM),on human lung cancer cells(A549)and normal cell lines,including murine macrophages(RAW 264.7)and human keratinocytes(HaCaT).Methods:Plant extracts were prepared using aqueous extraction,sonication,and rotary evaporation.The total phenolic and flavonoid contents were quantified using the Folin-Ciocalteu and AlCl3 colorimetric methods,respectively.Antioxidant potential was evaluated via 2,2-Diphenyl-1-picrylhydrazyl(DPPH)scavenging and reducing power assays.Cytotoxicity was assessed using an MTT assay,while reactive oxygen species(ROS)generation was quantified using a 2′,7′-Dichlorodihydrofluorescein diacetate(DCFH-DA)assay.Anticancer properties,including colony formation inhibition and migration suppression,were examined using colony formation and wound healing assays.The expression of apoptotic and inflammatory mediators was analysed through qPCR.Results:GMAS 01 selectively induced apoptosis in A549 cells without cytotoxic effects on RAW264.7 and HaCaT cells.Mechanistically,it elevated intracellular ROS and activated the intrinsic mitochondrial apoptotic pathway,evidenced by p53 upregulation,increased Bax,and decreased Bcl-2 expression.GMAS 01 also significantly inhibited colony formation and migration in A549 cells.In RAW264.7 cells,it reduced nitric oxide(NO)production and downregulated iNOS,COX-2,IL-6,and IL-8,indicating strong immunomodulatory activity.Conclusion:GMAS 01 exhibits potent antioxidant,anti-inflammatory,and anticancer effects,likely mediated through ROS-induced mitochondrial apoptosis.However,mechanistic interpretations are limited by the absence of protein-level validation and pathway inhibition studies.Upcoming studies should aim to verify the underlying mechanisms and evaluate their potential for real-world application.
文摘Aim An HPLC method for analyzing eleutheroside B (ELU B) and eleutheroside E(ELU E) , two of the main active substances of Acanthopanax preparations were studied. Methods Thesamples were analyzed on a kromasil ODS column with water-acetonitrile as a gradient mobile phase.The flow rate was 0.8 mL·min^(-1) and detecting wavelengths were 206 nm for ELU B, 220 nm for ELUE, solid phase extraction (SPE) and internal standard-salicin were selected. Results The recoveriesof Acanthopanax tablets and injection were 90.4% - 96.8% and 96.4% - 99.8% for ELU B, 87.7% -93.3%and 95.7% - 98.5% for ELU E, respectively. The linear ranges were 4.45 - 22.25 μg· mL^(-1) (r =0.999 8) and 5.11 - 25.55 μg·mL^(-1) ( r = 0.999 7) respectively. Conclusion This method can savethe time for cleaning the chromatographic system and improve sensitivity for Acanthopanaxpreparations , thus providing a way to evaluate the quality of Acanthopanax preparations.
文摘Adsorptive resin was used to extract syringin from Acanthopanax senticosus, and the content of syringin was assayed by HPLC. Some factors affecting the extraction efficiency such as resin type, resin amount, eluent type, eluent flow rate and amount were examined. The optimal purification condition was selected.
文摘AIM To examine the effects of Acanthopanax senticosus polysaccharides(ASPS) on intestinal tight junction(TJ) disruption and nuclear factor-kappa B(NF-κB)/myosin light chain kinase(MLCK) activation in endotoxemia.METHODS BALB/C mice(6-8-weeks-old) received continuous intragastric gavage of ASPS for 7 d before injection of lipopolysaccharide(LPS), or received ASPS once after LPS injection. Blood and intestinal mucosal samples were collected 6 h after LPS challenge. Clinical symptoms, histological injury, intestinal permeability,TJ ultrastructure, and TJ protein expression were determined.RESULTS Compared with mice in the LPS group, pretreatment with ASPS improved clinical and histological scores by 390.9%(P < 0.05) and 57.89%(P < 0.05), respectively, and gut permeability change in endotoxemic mice was shown by a 61.93% reduction in reduced leakage of fluorescein isothiocyanate-dextran 6 h after LPS injection(P < 0.05). ASPS pretreatment also prevented LPS-induced TJ ultrastructure breakdown supported by increased electron dense materials between adjoining cells, sustained redistribution and expression of occludin(0.597 ± 0.027 vs 0.103 ± 0.009, P < 0.05) and zonula occludens-1(0.507 ± 0.032 vs 0.125 ± 0.019, P < 0.05), and suppressed activation of the NF-κB/MLCK pathway indicated by reduced expression of NF-κB, phospho-inhibitor kappa B-alpha, MLCK and phospho-myosin light-chain-2 by 16.06%(P < 0.05), 54.31%(P < 0.05), 66.10%(P < 0.05) and 64.82%(P < 0.05), respectively. CONCLUSION ASPS pretreatment may be associated with inhibition of the NF-κB/MLCK pathway and concomitant amelioration of LPS-induced TJ dysfunction of intestinal epithelium in endotoxemia.
基金the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, No. 2005-383
文摘BACKGROUND： Acanthopanax senticosus, a plant of the Araliaceae family, is used in traditional Chinese medicine. It can be used to replenish Qi, strengthen the spleen, tonify the kidney, and relieve mental strain. OBJECTIVE： To observe effects ofAcanthopanax senticosus on learning and memory in a mouse model of Alzheimer＇s disease and abnormal biochemical changes in the brain tissue. DESIGN： A completely randomized grouping, controlled animal experiment. SETTING： Department of Preventive Medicine, School of Basic Medical Sciences, Yanbian University. MATERIALS： A total of 50 Kunming mice, aged 1-1.5 months, equal numbers of males and females, were provided by the Laboratory Animal Center, Yanbian University Medical College. The study was performed in accordance with ethical guidelines for the use and care of animals. Acanthopanax was provided by Yanbian Chengda Pharmaceutical Co., Ltd. Acanthopanax senticosus （0.5 kg） was soaked in water for 1 hour and transferred to 1.5 kg distilled water for extraction. It was boiled for 1 hour and extracted after 1 hour of boiling. The procedure was repeated 3 times. The extract was condensed to 500 mL and then adjusted to 500 and 1000 g/L with water. Piracetam tablets were produced by Shandong Luoxin Pharmaceutical Corporation, China. Malonaldehyde （MDA）, superoxide dismutase （SOD）, and acetylcholinesterase （ACHE） kits were purchased from Nanjing Jiancheng Bioengineering Co., Ltd., China. METHODS： This study was performed at the Department of Preventive Medicine, School of Basic Medical Sciences, Yanbian University from January to June 2007. All mice were randomly divided into 5 groups with 10 mice in each： control group, model group, low-, and high-dose Acanthopanax senticosus-treated groups, and piracetam-treated group. All groups were administered 0.1 mL/10 g. In the control and model groups, mice were intragastrically administered saline each morning for 5 days prior to experimentation. Five days later, they were intraperitoneally perfused with saline and aluminum trichloride （100 mg/kg）, respectively, every other afternoon. In the low- and high-dose Acanthopanax senticosus-treated groups, as well as the piracetam-treated groups, mice were intragastrically administered 500 and 1 000 g/L Acanthopanax senticosus and 23 g/L piracetam suspension, respectively, every morning. Five days later, they were intraperitoneally perfused with aluminum trichloride （100 mg/kg） every other afternoon, 20 successive times. MAIN OUTCOME MEASURES： On days 20, 23, 26, and 29 after treatment, time-to-platform, number of errors, and accuracy were measured by water maze. After anesthesia, mice were euthanized and whole brain tissues were immediately resected and homogenized. MDA levels, and SOD and AChE activities, were measured using the corresponding kits. RESULTS： Fifty mice were included in the final analysis. In the model group, accuracy increased, and time-to-platform was prolonged, compared to control group （P 〈 0.05 0.01）. In the model group, MDA levels significantly increased （P 〈 0.05）, while SOD activity significantly decreased （P 〈 0.01）, compared to control group. MDA levels were significantly lower and SOD activity was significantly higher in the low- and high-dose Acanthopanax senticosus-treated groups, compared to the model group （P 〈 0.05 0.01）. In the model group, AChE activity significantly increased, compared to the control group （P 〈 0.05）, AChE activity was significantly lower in the high-dose Acanthopanax senticosus-treated and the piracetam-treated groups than in the model group （P 〈 0.05）. CONCLUSION： Acanthopanax senticosus can improve learning and memory in a mouse model of Alzheimer＇s disease, and concomitantly increase SOD activity, inhibit AChE activity, and decrease MDA levels.
基金supported by the PhD Program Open Foundation of the Food and Drug Administration of KoreaHunan Provincial Natural Science Foundation(No.11JJ2042)+1 种基金the Science of Pharmaceutical Analysis of Twelfth Five-Year Key Discipline Projects of Hunan University of Chinese MedicineScience of Chinese Materia Medica of Twelfth Five-Year Key Discipline Projects of Hunan Province
文摘AIM: To investigate the cytotoxicity, anti-inflammatory activity, and action mechanism of root bark extracts of Acanthopanax henryi. METHOD: The hot methanol extract of the root bark of A. henryi was subjected to XAD-4 column chromatography eluting with a gradient of methanol in water. The cytotoxicity and anti-inflammatory effects of the MeOH fractions were evaluated on the inhibition on lipopolysaccharide(LPS)-induced nitric oxide, prostaglandin E2, interleukin-1β, and interleukin-6 production in RAW 264.7 macrophages. RESULTS: The 80% MeOH fraction was a better inhibitor of LPS-induced NO, PGE2, IL-1β, and IL-6 production, and expression of inducible nitric oxide synthase(iNOS) at the protein levels in a concentration-dependent manner. CONCLUSION: The 80% MeOH fraction of A. henryi root bark has significant anti-inflammatory activity. This provides a pharmacological basis for clinical application for the treatment of inflammation.
文摘Random Amplified Polymorphic DNA (RAPD) analysis is a new technology of molecular marking which has proved very powerful in detecting genetic diversity at the level of population. The genomic DNAs used in our experiment were extracted from fresh leaves taken from 59 individuals sampled from three natural populations in Yan An, Shanxi Province. Through more than 2,000 PCRs, deep-going RAPD analysis was carried out on DNA samples from 49 inviduals. The percentage of polymorphic RAPD loci found in these three populations were respectively 27.2 %, 18.6 % and 5.4 %; the average genetic distances within population, 0.055, 0.036 and 0.008; the average genetic distances between populations (Ⅰ-Ⅱ), (Ⅰ-Ⅲ) and (Ⅱ-Ⅲ), 0.105, 0.096 and 0.060. The genetic diversity of A. brachypus within and between populations was found, for the first time, to be rather poor,thus revealing innate factors as the cause contributing to its endangered status. In addition, our work also provides basic materials for elucidating the underlying cause of its endangerment and for its protection biology.
基金Supported by Cooperative Research Program for Agriculture Science and Technology Development and Rural Development Administration,Republic of Korea(Investigation of Functional Nutrients from Agricultural Food and Development of Integrated Information,No.PJ011644)
文摘OBJECTIVE:To investigate the gastroprotective effects of Acanthopanax senticosus leaves(ASLs)extrusion on acute gastric mucosal lesion in rats induced by compound 48/80(C48/80).METHODS:Rats were divided into six groups:normal;C48/80-induced gastric lesion control;gastric lesion positive control(famotidine 4 mg/kg);gastric lesion administered with two levels of extruded ASLs(ASLE,40 and 200 mg/kg);and gastric lesion treated with ASLs(ASL 200 mg/kg).Mucus secretion/damage was determined by immunohistological staining.Immunofluorescence and western blotting were performed to determine gastric mucosal Bax and Bcl-2 expression.Gastric mucosal oxidative-stress-related enzymes and malondialdehyde were determined.RESULTS:C48/80-induced mucus depletion and inflammation in the gastric mucosa were significantly attenuated by ASLs.The increased serum serotonin and histamine concentrations in C48/80-treated rats were also attenuated by ASLs.Gastric mucosal Bax protein expression was increased and Bcl-2 expression was decreased after C48/80 treatment,and ASLs ameliorated Bax and Bcl-2 expression.The extrusion process significantly augmented the effects of ASLs in a dosedependent manner.ASLEs at 200 mg/kg normalized mucus damage/secretion,C48/80-induced increases of mucosal myeloperoxidase activity(index of inflammation),xanthine oxidase,and malondialdehyde content(index of lipid peroxidation).The effects of ASLs on Bax and Bcl-2expression were also enhanced by extrusion.Furthermore,these effects of ASLEs at 200 mg/kg were similar to those of famotidine,a histamine H2-receptor antagonist commonly used to treat gastric ulcers.CONCLUSION:ASLEs prevented acute gastric mucosal lesion progression induced by C48/80,possibly by inducing mucus production,and reduced inflammation and oxidative stress in gastric mucosa through an anti-apoptotic mechanism.
基金a grant from the Young Foundation of Wuhan General Hospital of Guangzhou Military Command of Chinese PLA, No. 200810
文摘Acanthopanax senticosus aqueous extract, at 10, 5 and 2.5 μg/mL, lessened hypoxia-induced PC12 cell injury. Pretreatment with the extract upregulated Bcl-2 expression, downregulated Bax expression, elevated superoxide dismutase activity, diminished malondialdehyde content, relieved Ca2＋ overloading, and suppressed apoptosis of PC12 cells. These effects were most pronounced at 10 μg/mL. These results suggest that Acanthopanax senticosus aqueous extract protects PC12 cells from hypoxia-induced injury in a dose-dependent manner.
基金supported by a grant from Chinese Pharmacopoeia Commission(No.2010-385)
文摘The kaurenoic acid-type diterpenoids in Acanthopanacis Cortex have been reported to be the major active components. However, the diterpenoids are present as position isomers that exacerbate the challenges in obtaining standards compounds. Little work has been done on the quantitative analysis of the diterpenoids in the herb. In the present study, two diterpenoid isomers ent-16βH,17-isovalerate-kauran-19-oic acid(1) and ent-16βH,17-methyl butanoate-kauran-19-oic acid(2) with high purity were separated by analytical HPLC, followed by recrystallization in acetone. Furthermore, an HPLC-ELSD method was developed and validated for simultaneous determination of 1 and 2 in 9 batches of Acanthopanacis Cortex samples. The HPLC separation and quantification was achieved in 40 min using an Agela Promosil C18 column eluted with a gradient of water and acetonitrile. The calibration curves showed good linearity(r^2 ≥ 0.999 9) within the test ranges. The LOD ranged from 0.407 2 to 0.518 0 mg and LOQ ranged from 1.018 0 to 1.295 0 mg. The precisions(%RSD) were within 1.47% for the two isomers. The recovery of the assay was in the range of 98.78%-99.11% with RSD values less than 2.76%. It is the first time to establish a quantitative HPLC method for the analysis of the bioactive kaurenoic acid isomers in the herb.
文摘Three new compounds named (2E)prenyl benzoate-4-O-α-L-arabinopyranosyl (1→6) β-D-glucopyranoside (1), 7-methoxy-8-O-β-D-glucopyranosyl coumarin (2), and 3,4'-dihydroxy-3'-methoxy benzenepentanoic acid (3) were isolated from the leaves of Acanthopanax senticosus Harms. The structures of new compounds were determined by means of 2D NMR experiments and chemical methods.
基金Supported by Joint Fund Project of Guizhou Provincial Department of Science and Technology(Qian Ke He LH Zi[2015]7716)Open Fund Project for Development Engineering Research Center of National Medicinal Plant Resources of Colleges and Universities in Guizhou Province(Qian Jiao He KY Zi[2014]227)
文摘Acanthopanax trifoliatus( L.) Merr is a common traditional Chinese herbal medicine in central and southern regions of China. It has high medicinal and edible value and mainly contains flavonoids,polysaccharides,saponins and volatile components. Its active extracts have antioxidant,anti-inflammatory,anti-fatigue,and analgesic effects. From the biological characteristics,effective chemical components,extraction methods,cultivation techniques,pharmacological effects,toxicological activities,and product development status,this paper reviewed in detail the research status of A. trifoliatus in China and abroad,to provide a scientific basis for in-depth research and development,and utilization of A. trifoliatus.
基金Project(11JJ2042)supported by the Natural Science Foundation of Hunan Province,ChinaProject supported by the "Twelfth Five-Year" Key Discipline of Hunan University of Chinese Medicine-Pharmaceutical Analysis Science,China+1 种基金Project(11K048)supported by the Innovation Platform and Open Foundation Program of Higher Colleges of Hunan Province,ChinaProject(K1207010-21)supported by the Changsha City Science and Technology Bureau Key Projects,China
文摘To study the stereostructure by X-ray and the technology of extracting acankoreanogenin from the leaves of Acanthopanax graeilistylus W. W. Smith （AGS）, the crystal structure was measured with a Bruker APEX-Ⅱ area-detector diffractometer instrument and the technology of extracting in combination hydrolysis in situ （ECHS） was compared with these of traditional methods. The crystal belongs to the monoclinic system, space group P2b with unit cell parameters： a=（8.3652±0.0006） nm, b=（24.721±0.002） nm, and c=（14.5587±0.0011） nm, α=90°, β=97.850 （4） °, γ=90 °, V=2982.51 nm3, Dc= 1.179 mg/m3, and the molecular number （Z） of elementary structures was 2. The comparisons show that the extraction rate of acankoreanogenin with ECHS methods is much higher than that of traditional methods. Then, central composite design-response surface methodology （CCD-RSM） was adopted for optimizing the extraction rate of ECHS methods. The optimized values of extraction parameters are as follows： for the for extraction process of acid hydrolysis are that extraction time 110.8 min, solvent-herb ratio 11.5 and acid content 5.25%; the best extraction process of basic hydrolysis are that extract time 120 min, solvent-herb ratio 8.7 and the alkali content 8.79%. Finally, the extracts were purified with decolorizing carbon after alkali solution and acid-isolation and purity of acankoreanogenin was 98.7%.
文摘Flavonols were extracted from Acanthopanax Senticosus Harms by Soxhlet extraction（SE）,atmospheric pressure microwave-assisted extraction（AMAE） and pressurized microwave-assisted extraction（PMAE）.The influences of experimental conditions,such as concentration of ethanol in the eluent,microwave irradiation time,etc.on the extraction yield were studied.Four flavonols（hyperin,rutin,quercitrin and quercetin） in the extracts were determined quantitatively by HPLC method.The experimental results demonstrate the advantages of PMAE and AMAE over those of conventional SE,that is the extraction time is dramatically reduced,and the yields of flavonols are effective improved.Although the yield of flavonols is higher and the extraction time is shorter by PMAE than those of AMAE,flavonols are easy to be decomposed over a certain time.
文摘Differences in germination of .A. Senticosus, an important shrub under the Korean Pine broad-leavd forest and its secondary forest in heterogeneous habitats and the dynamics of its seed pool have been studied by observations in location. The results showed that transformation rates from seeds to seedlings were in the following order : 16.8% in Larch plantations, 4. 1% in Mongolian oak forests, 2.7% in Birch forests, 1.8% in Korean Pine plantations, and 0.5% in hard wood forests.The life-span of seeds was determined to be four years in the simulating seed pool under Larch plantations. The percentage of the seedling output was, 14.5% in the 2nd year, 10. 1% in the 3rd year, and 1 .8% in the 4th year. Other types of the seed output were those f decayed 33. 1 %, senescent, 22.3%,predated by mice 14. 1%, which was variable due to the variation in the number of mouse, and only 1. 17% were eaten by insects and other soil animals.
