ABSTRACT
Astragali Radix, a medicinal herb for invigorating Qi, has anti-aging, anti-tumor, immunoregulatory, blood sugar-and lipid-lowering, anti-fibrosis, anti-radiation and other pharmacological effects. This article reviewed the studies about the chemical components and pharmacological effects of Astragali Radix. According to the theory of quality markers(Q-markers) of Chinese medicinal materials, we predicted the Q-markers of Astragali Radix from traditional efficacy, chemical component validity, measurability, plant phylogeny, and pharmacokinetis. The results showed that total polysaccharides, flavonoids(e.g., calycosin-7-O-β-D-glucoside, formononetin, calycosin, quercetin, and ononin), and saponins(e.g., astragalosides Ⅱ, Ⅲ, and Ⅳ) can be taken as the main Q-markers. This review lays a foundation for regulating the quality research and standard establishment of Astragali Radix, and benefits the control and quality supervision of the production process of Astragali Radix and its related products.
Subject(s)
Astragalus Plant , Chromatography, High Pressure Liquid/methods , Drugs, Chinese Herbal/pharmacology , Flavonoids , Plant RootsABSTRACT
The effects of water regulation on the biosynthesis of calycosin-7-O-β-D-glucoside in 2-year-old Astragalus membranaceus var. mongholicus were studied,and the mechanism was explained from the aspects of key enzyme gene expression and antioxidant enzyme system. The content of calycosin-7-O-β-D-glucoside was determined by HPLC,and the expression levels of six key enzyme genes( PAL,4 CL,CHS,CHI,IFS,13'H) in the synthesis pathway were analyzed by q RT-PCR. The activities of protective enzymes and contents of osmoregulation substances and malondialdehyde were also determined. In the water deficit group,the maximum concentration of calycosin-7-O-β-D-glucoside was 0. 49 mg·g-1 on the 24 th day of treatment. In the whole water regulation,the water deficit group outweighed the water adequate group in osmoregulation substance and MDA contents. The activities of A. membranaceus var.mongholicus antioxidant enzymes SOD,POD,and CAT increased during the initial period of water regulation,but decreased with time.The expression of PAL,CHS,and 13'H in the water deficit group was at a low level,and the 4 CL had active expression,slightly lower than that in the water adequate group. The expression of CHI and IFS elevated rapidly when water deficit occurred. Correlation analysis showed that the content of calycosin-7-O-β-D-glucoside was positively correlated with CHI expression( P<0. 01) and IFS expression( P<0. 05). Therefore,water regulation can change the accumulation pattern of calycosin-7-O-β-D-glucoside,and water deficit may be an effective way to increase its content. CHI and IFS are the key genes in response to water deficit.
Subject(s)
Astragalus propinquus/genetics , Biosynthetic Pathways , Glucosides , Isoflavones , WaterABSTRACT
Astragali Radix is one of the most commonly used medicinal materials. In recent years, its cultivated varieties and a variety of adulterants have flooded the market, which makes its quality uneven, and the development of quality control methods has become a research hotspot. Therefore, figuring out the quality markers of Astragali Radix is of great significance for its comprehensive evaluation. In this study, the fingerprints of 15 batches of Astragali Radix were established by HPLC, and the main components causing intergroup differences were screened out by PLS-DA. On the basis of literature review and network pharmacology analysis, the targets and pathways of active ingredients were obtained from SwissTargetPrediction, PubChem Compound and other databases, and then the "component-target-pathway" network was constructed with Cytoscape 3.7.1 for the prediction of potential quality markers. Twenty-eight common peaks were identified in the established fingerprint, and three differential components were selected as potential quality markers for Astragali Radix, which were astragaloside Ⅳ, calycosin-7-O-β-D-glucoside and ononin. The proposed method based on HPLC fingerprint of Astragali Radix is convenient and feasible, facilitating the improvement in its quality control.
Subject(s)
Astragalus Plant , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Plant Roots , Quality ControlABSTRACT
AIM To establish an HPLC method for the simultaneous content determination of ginsenoside Re,ginsenoside Rg1,ginsenoide Rb1,specnuezhenide,calycosin-7-O-β-D-glucoside and oleanolic acid in Yitai Cap sules (Ginseng Radix et Rhizoma,Astragali Radix,Ligustri lucidi Fructus,etc.).METHODS The analysis of 70％ ethanol extract of this drug was performed on a 25 ℃ thermostatic Luna C18 column (4.6 mm ×250 mm,5 μm),with the mobile phase comprising of methanol-O.2％ phosphoric acid flowing at 1.0 mL/minin a gradient elution manner,and the detection wavelength was set at 203 nm.RESULTS Six constituents showed good linear relationships within their own ranges (r ＞ 0.999 0),whose average recoveries were 95.58％-102.12％ with the RSDs of 0.82％-1.73％.CONCLUSION This simple and stable method can be used for the rapid quality control of Yitai Capsules.
ABSTRACT
AIM To investigate the effect of Supplemented Buyang Huanwu Decoction (Astragali Radix,Angelica tail,Paeoniae Radix rubra,etc.) on blood glucose in diabetic rats and its antioxidant activity.METHODS The diabetic rat model induced by streptozotocin (STZ) was established,with metformin as positive control group.After intragastric administration with Supplemented Buyang Huanwu Decoction,the fasting blood glucose,superoxide dismutase (SOD) activity and malondialdehyde (MDA) content in serum and tissues (heart,kidney and pancreas) in rats were detected.HPLC was used to determine the contents of antioxidant constituents (calycosin-7-O-β-D-glucoside and peoniflorin) in plasma,whose pharmacokinetic parameters were then calculated.RESULTS Compared with the model group,the hypoglycemic activity in the Supplemented Buyang Huanwu Decoction group was obvious (P ＜ 0.05),the SOD activity in serum and various issues (except for pancreas) was significantly enhanced,together with significantly reduced MDA level (P ＜ 0.05).The pharmacokinetic behavior of two constituents (calycosin-7-O-3-D-glucoside and peoniflorin) accorded with two-compartment open model,whose blood concentrations reached the highest within 50-70 min,and showed no obvious changes within 180-720 min.CONCLUSION Supplemented Buyang Huanwu Decoction can reduce the blood glucose in diabetic rats and improve the antioxidant activities in heart and kidney.The fast absorption and slow metabolism of calycosin-7-O-3-D-glucoside and peoniflorin in decoction are beneficial to related treatment.
ABSTRACT
Objective: An HPLC method was established to determine the content of calycosin-7-O-β-D-glucoside and formononetin in Astraglus membranaceus var. mongholicus. To study the influence of habitats, processing methods, and planting ages on the quality of A. membranaceus var. mongholicus. Methods: The HPLC condition was as follows: column: Dikma C18 (250 mm×4.6 mm, 5 μm); mobile phase: Acetonitrile-0.2% formic acid (gradient elution); flow speed: 1.0 mL/min; detection wavelength: 260 nm; temperature of column: 30℃. Results: Comparing the content of calycosin-7-O-β-D-glucoside and formononetin in 40 samples of A. membranaceus var. mongholicus from 11 different habitats, we could get the following: The processing methods of A. membranaceus var. mongholicus were cleaning and natural drying; Bayinnaoer city Wu Qianqi ming'an town head part was the best habitat for A. membranaceus var. mongholicus. The quality of A. membranaceus var. mongholicus cultivars grown for two years and three years had no difference. The quality of wild species was superior cultivars. Conclusion: The method is simple and rapid for determination, the contents of calycosin-7-O-β-D-glucoside and formononetin in A. membranaceus var. mongholicus. It can be used as a scientific and reliable basis for formulating the reasonable standard of cultivating and processing methods of A. membranaceus var. mongholicus.
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Objective: To explore the effect of calycosin-7-O-β-D-glucoside (CG) on apoptosis in cervical cancer HeLa cells and expression of Bcl-2/Bax. Methods: HeLa cells were cultured and divided into two groups, including control group and experimental group. Cell viabilities were determined by the MTT method; Apoptosis and cell cycle were analyzed by flow cytometry; The changes of protein expression of cleaved Caspase-3, Bcl-2, and Bax were detected by Western blotting. Results: From the data of MTT, the cell proliferation of human cervical cancer HeLa cells was inhibited by CG (2.5-100 μg/mL) in a dose- and time-dependent manner. Flow cytometry assays showed that EGCG significantly induced the apoptosis in HeLa cells. The apoptosis rate of the experimental group were increased gradually in 48 h after treated with CG (20, 40, and 80 μg/mL), they were 10.40%, 25.50%, and 39.40%, respectively, significantly higher than those in the control group. The data of Western blotting showed that CG down-regulated Bcl-2 and up-regulated cleaved Caspase-3 and Bax in a dose-dependent manner. Conclusion: CG could inhibit the the proliferation of HeLa cells and promote apoptosis, and the anticancer effect of CG may be associated with the down-regulation of Bcl-2 expression and up-regulation of Bax expression, as well as the increase of relative activity of Caspase-3. CG may be a promising antitumor agent for cancer treatment.
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OBJECTIVE: To develop a method for simultaneous determination of gentiopicroside, prim-O-glucosylcimifugin, calycosin-7-O-β-D-glucoside, paeonol, magnolin, imperatorin and isoimperatorin in Fangzhi nasopharyngeal granules by HPLC.