Application Progress of Electrochemical Methods in Quality Control of Traditional Chinese Medicine / 分析化学

The quality control of traditional Chinese medicine(TCM)is the core issue to ensure the modernization,industrialization and internationalization of TCM.Compared with other detection methods,electrochemical analysis method has many advantages such as high sensitivity,fast detection speed and low cost,making it an important means of quality control for TCM and having broad development prospects.This article reviewed the research progress of electrochemical methods in quality control of TCM in recent years,discussed the application of electrochemical fingerprinting technique in identification of TCM,and comprehensively summarized the application of electrochemical technology in analyzing effective components and harmful substances in TCM,including flavonoids,alkaloids,quinones,glycosides,heavy metals and pesticide residues.Finally,the development prospects of electrochemical methods in the field of quality control of TCM were discussed.

Oral absorption and effect of macromolecules in traditional Chinese medicine: a new perspective and research mode of phase structure / 中国中药杂志

Protein polypeptides and polysaccharides, the indispensable macromolecular active components in traditional Chinese medicine, are widely found in Chinese medicine decoction after the decoction of traditional Chinese medicine. However, through oral administration, these macromolecules are digested by the stomach and intestine and thus fail to be absorbed in prototype. This is inconsistent with the actual clinical efficacy of Chinese medicine decoction. According to modern research, new phase structures and effects of the macromolecules emerge during the decoction of traditional Chinese medicine, but the phase change law caused by the interaction among the components of traditional Chinese medicine and the relationship between phase structure and effect are still unclear. Thus, this study reviewed the oral absorption of macromolecular components of traditional Chinese medicine, analyzed the internal relationship of the form of macromolecules in traditional Chinese medicine with the absorption and effect based on phase structure, and summarized the research mode of oral absorption and effect of macromolecules in traditional Chinese medicine with phase structures as the core, providing new ideas and methods for future research.

Guideline for clinical comprehensive evaluation of Chinese patent medicine (2022 version) / 中国中药杂志

Currently,the research or publications related to the clinical comprehensive evaluation of Chinese patent medicine are increasing,which attracts the broad attention of all circles. According to the completed clinical evaluation report on Chinese patent medicine,there are still practical problems and technical difficulties such as unclear responsibility of the evaluation organization,unclear evaluation subject,miscellaneous evaluation objects,and incomplete and nonstandard evaluation process. In terms of evaluation standards and specifications,there are different types of specifications or guidelines with different emphases issued by different academic groups or relevant institutions. The professional guideline is required to guide the standardized and efficient clinical comprehensive evaluation of Chinese patent medicine and further improve the authority and quality of evaluation. In combination with the characteristics of Chinese patent medicine and the latest research achievement at home and abroad,the detailed specifications were formulated from six aspects including design,theme selection,content and index,outcome,application and appraisal,and quality control. The guideline was developed based on the guideline development requirements of China Assoication of Chinese medicine. After several rounds of expert consensus and public consultation,the current version of the guideline has been developed.

Mechanism of antidepressant effect of Ansheng Buxin Liuwei pills based on network pharmacology / 中国药理学通报

Aim To apply network pharmacology, molecular docking, and in vitro experimental techniques to predict as well as verify the antidepressant pharmacological mechanisms of Mengyao Anshen Buxin Liuwei pills. Methods TCMSP database and literature mining were used to obtain the active ingredients of Anshen Buxin six flavor pills , Swiss Target Prediction was applied to predict the ingredient related target information, and Cytoscape was employed to construct a medicinal herb ingredient target network. Depression targets were retrieved through GeneCards , Drugbank , OMIM and other databases. STRING database was used to obtain protein interaction relationship network information. DAVID database was used for GO biological process enrichment analysis and KEGG signaling pathway enrichment analysis. Autodock vina software was applied for molecular docking validation. In vitro injury model was established in BV2 microglial cells, cell viability was assessed by CCK-8 assay, and the mRNA expression of relevant core targets was assessed by qPCR. Results A total of 34 active components of Anshen Buxin Liuwei pills were screened, involving 140 potential targets and 59 core targets, involving 99 signaling pathways. Molecular docking results showed that betulinic acid, stigmasterol p-stiosterol 10 active components such as sitosterol and quercetin had good binding ability with AKT1, APP, ALB, MAPK3, VE GFA and MAPK 1 targets. The re suits in vitro showed that the activity of BV2 cells increased significantly compared with the model group. Anshen Buxin Liuwei pills could regulate the mRNA expression of each core target. Conclusion Anshen Buxin Liuwei pills may play an antidepressant role mainly through serotonin synaptic and other signaling pathways and related core targets.

Application of Self-assembled Nano-strategies of Traditional Chinese Medicine in Tumor Therapy： A Review / 中国实验方剂学杂志

Chinese medicine self-assembly nano-strategies（CSAN） is to utilize the self-assembly property of Chinese medicine components， so that the Chinese medicine components can self-assemble to form structurally stable nano-preparations through non-covalent interactions. The formation of Chinese medicine self-assembly nano-preparations is often a synergistic result of a variety of non-covalent interactions， and many Chinese medicine monomers are susceptible to self-assembly due to their structural characteristics， and the phenomenon of self-assembly of Chinese medicine is also common in the decoction of single or compound Chinese medicine， which has attracted the attention of researchers. It is found that CSAN can improve the solubility and bioavailability of active components in Chinese medicine， which is of positive significance for the development and application of insoluble components of Chinese medicine. The self-assembly phenomenon of Chinese medicine decoction is closely related to the therapeutic efficacy， and the study of self-assembly phenomenon of Chinese medicine will bring a new perspective for the explanation of the mechanism of Chinese medicine decoction. At the same time， traditional Chinese medicine（TCM） has unique advantages in the field of anti-tumor. The application of CSAN in the field of oncology can not only exert the anti-tumor effect of the active components of Chinese medicine directly， but also act as a natural nano-carrier to carry chemotherapy drugs for combination chemotherapy， improve the targeting of drugs， enhance the anti-tumor efficacy， and reduce the side effects of chemotherapy， which has excellent anti-tumor potential. The preparation method of Chinese medicine self-assembly nano-preparations is simple， low cost， and has better safety than traditional nano-preparations， which is conducive to the promotion of the clinical transformation of nano-preparations， and also helps to provide new strategies and perspectives for promoting the modernization of TCM. Therefore， based on a large number of researches in this field in recent years， this paper reviewed the formation mechanism， different assembly forms， formation conditions and stability of Chinese medicine self-assembly nano-preparations by searching databases such as China national knowledge infrastructure（CNKI）， PubMed， WanFang data and VIP， and summarized the application of CSAN in different tumor therapies， providing a reference for further research on CSAN.

Effect of Siwu decoction on function and expression of P-glycoprotein in Caco-2 cells / 中国中药杂志

To study the effect of Siwu decoction on the function and expression of P-glycoprotein (P-gp) in Caco-2 cells. The Real-time quantitative poly-merase chain reaction (Q-PCR) was used to analyze the mRNA expression of MDR1 gene in Caco-2 cells. Flow cytometer was used to study the effect of Siwu decoction on the uptake of Rhodamine 123 in Caco-2 cells, in order to evaluate the efflux function of P-gp. Western blotting method was used to detect the effect of Siwu decoction on the P-gp protein expression of Caco-2 cells. Compared with the blank control group, after Caco-2 incubation with Siwu decoction at concentrations of 3.3, 5.0, 10.0 g x L(-1) for 24, 48, 72 h, the mRNA expression of MDR1 was up-regulated, suggesting the effect of Siwu decoction in inducing the expression of MDR1. After the administration with Siwu decoction in Caco-2 cells for 48 h, the uptake of Rhodamine 123 in Caco-2 cells decreased by respectively 16.6%, 22.1% (P < 0.05) and 45.4% (P < 0.01), indicating that the long-term administration of Siwu decoction can enhance the P-gp efflux function of Caco-2 cells. After the incubation of Caco-2 cells with Siwu decoction for 48 h, the P-gp protein expression on Caco-2 cell emebranes, demonstrating the effect of Siwu decoction in inducing the protein expression of P-gp.

Effect of ginseng polysaccharide-induced wnt/beta-catenin signal transduction pathway on apoptosis of human nasopharyngeal cancer cells CNE-2 / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effect of ginseng polysaccharide (GPS) on the proliferation and apoptosis of human nasopharyngeal cancer cells CNE-2, and discuss the possible mechanism.</p><p><b>METHOD</b>The effect of GPS on the growth of CNE-2 cells was observed by CCK8 assay. CNE-2 cells in the logarithmic phase were collected and processed respectively with different concentrations (0, 0. 1, 0. 2, 0. 3. 0. 4 g L-1) of GPS for 48 h. The flow cytometry was used to detect its induction effect on CNE-2 cell apoptosis. Hoechst-33258 cell staining and electron microscope were used to observe the morphological changes of cells. The beta-catenin mRNA expression was detected by Real-time PCR. The protein localizations and expressions of beta-catenin and TCF4 were tested by the immunofluorescence staining. The expressions of beta-catenin, Bcl-2 and Bax proteins were detected by Western blot.</p><p><b>RESULT</b>CCK8 assay results showed that GPS could remarkably inhibit the proliferation of CNE-2 cells, with dose-time dependence. IC50 of cells induced with GPS for 48 h was 0. 39 g L-1. After being processed with GPS with concentrations of 0.1, 0. 2, 0. 3, 0. 4 g L-1 for 48 h, the cell apoptosis rates of human nasopharyngeal cancer cells CNE-2 were (5. 69 +/- 0. 29)% , (10. 3 +/- 0. 63)% , (15. 4 +/- 0. 74 ) % and (35. 7 +/- 1. 86)% , respectively. Significant difference was observed compared with the control group (2. 08 +/- 0. 11) % (P <0. 05). The results of Hoechst-33258 staining showed the characteristics of cell apoptosis. Under the electron microscope, apoptosis bodies could be observed among CNE-2 cells induced with GPS with the concentration of 0. 4 g L -1 for 48 h. The results of Real-time PCR showed a significant reduction in beta-catenin mRNA expression. The results of laser confocal microscopy revealed notable decrease of beta-catenin and TCF4 expression in nucleus and transfer from nucleus to cell membranes in beta-catenin expression areas after being processed with GPS for 48 h. Western blot showed significant decrease in the expressions of beta-catenin and anti-apoptosis protein Bcl-2, with an increasing expression in apoptosis-promoting protein Bax (P <0. 05).</p><p><b>CONCLUSION</b>GPS could significantly inhibit the proliferation of CNE-2 cells and promote thier apoptosis. The obstruction of Wnt/beta-catenin signaling pathway may be an important mechanism for GPS to induce the apoptosis of human nasopharyngeal cancer cells CNE-2.</p>

Studies on flavonoid glycosides of Sarcandra glabra / 中国中药杂志

<p><b>OBJECTIVE</b>To in vestigate the chemical constituents of Sarcandra glabra and obtain a more comprehensive understanding on its effective components.</p><p><b>METHOD</b>The constituents were isolated by various column chromatographic method and their structures were elucidated by physico-chemical properties and spectroscopic analysis.</p><p><b>RESULT</b>Five flavonoid glycosides were isolated and identified as kaempferol-3-O-beta-D-glucuronide (1), quercetin-3-O-alpha-D-glucuronide (2), quercetin-3-O-beta-D-glucuronopyranoside methyl ester (3), 5, 7, 4'-trihydroxy-8-C-beta-D-glucopyranosyl flavanone (4), neoastilbin (5), 5-O-caffeoylquinic acid methyl ester (6), 3, 4-dihydroxybenzoic acid (7), isofraxidin (8).</p><p><b>CONCLUSION</b>Compounds 1-6 were isolated from the genus Sarcandra for the first time. The glucuroide compounds compounds 1-3, were first isolated from the genus Sarcandra.</p>