Echinops latifolius Tausch is a plant of compositae echinops, whose dried roots are used as traditional Chinese medicine Yuzhou Loulu, and dried inflorescence is used as Mongolian medicine LanCitou. The studies on Chinese medicine Yuzhou Loulu and Mongolian medicine LanCitou in recent years were systemized and compared with each other in the paper, including chemical composi-tion, process research, quality control, pharmacological effects and so on. The results can provide scientific basis for the further studies and utilization of Echinops latifolius Tausch.

Objective: To study the chemical constituents of Potentilla multifida L. Methods: Chemical constituents were isolated by the repeated silica gel chromatography and Sephadex LH 20, and their structures were identified by the spectral analysis. Results: Five compounds were obtained as follows: 3?,24 dihydroxyl urs 12 ene (1), ursolic acid (2), euscaphic acid (3), tormentic acid (4), and epihedaragenin (5). Conclusion: Five compounds were isolated from this plant for the first time. Compounds 1 and 5 were isolated from this genus for the first time. Compound 1 was a new natural product.

The medical mobile learning platform was constructed according to the information need of teachers and students in Shanxi Medical University, Changzhi Medical College, and Fenyang Medical College.The teaching and learning resources in Shanxi Medical University were integrated into the platform which could thus provide a variety of interactive learning ways for its users and users could rapidly find out their interested information resources. However, the platform construction needs the implementation of incentive measures, and regulations and rules for the protection of intellectual property rights.

Background and purpose: Renal cell carcinoma is the most common form of kidney cancer, characterized by lack of early symptoms and high malignancy. This study aimed to establish orthotopic nude mice models of human renal cell carcinoma with high success rate and good repeatability. Methods: The four types of methods which were adopted to establish the orthotopic models of renal cell carcinoma were orthotopic injection of 786-0 and ACHN cell suspensions, orthotopic injection of primary cell suspensions obtained from the subcutaneous tumor tissues, renal subcutis orthotopic implantation into renal capsule and surgical subcutis orthotopic implantation into renal fascia. To gain insights into the tumorigenicity and the growth of transplantation tumors, the imageological examination (PET/CT), histological examination (H-E staining, immunohistochemistry staining) and biochemical analysis of blood were carried out. Results: In terms of the subcutaneous transplantation of human renal cell carcinoma models in nude mice, tumorigenic rate of ACHN cells (90%) was higher than that of 786-0 cells (30%). The tumorigenic incidences of 786-0 cell suspensions orthotopic injection, ACHN cell suspensions orthotopic injection, ACHN subcutis cellular suspensions orthotopic injection, ACHN subcutis orthotopic implantation into renal capsule and renal fascia were 33%, 80%, 90%, 100% and 20%, respectively. ACHN subcutis orthotopic implantation into renal capsule was the most effective approach. Imageological and histological results accorded with poorly differentiated renal cell carcinoma. Conclusion: Four orthotopic nude mice models of human renal cell carcinoma were successfully established. Among these methods, ACHN subcutis orthotopic implantation into renal capsule is the most effective approach, which provides an ideal model for the research on biological behavior of human renal cell carcinoma and its treatment.

OBJECTIVETo investigate the chemical constituents of the flowers of Chrysanthemum indicum.

METHODThe chemical constituents were isolated by various column chromatographic methods. The structures were identified by spectral data.

RESULTTwelve compounds were isolated and identified as acacetin (1), tricin (2), 2',4'-dihydroxychalcone(3), 5-hydroxy-4',7-dimethoxyflavon(4),7hydroxyflavonone (5), isorhamnetin (6),5,6,7-trihydroxy- 3',4', 5'-trimethoxyflanon (7 ), quercetin (8) , (3 beta, 5 alpha, 6 beta, 7 beta, 14 beta)-eudesmen-3,5,6,11-tetrol (9), syringaresinol (10), liriodendrin (11), and genkwanin (12).

CONCLUSIONCompounds 3-7, 10-12 were isolated from this species for the first time, and compounds 3, 5, 7, 10, 11 were obtained from genus Chrysanthemum for the first time.

Chalcones ; analysis ; Chrysanthemum ; chemistry ; Flavones ; analysis ; Flavonoids ; analysis ; Flavonols ; analysis ; Flowers ; chemistry ; Furans ; analysis ; Glucosides ; analysis ; Lignans ; analysis ; Quercetin ; analogs & derivatives

OBJECTIVE:To establish a method for simultaneous determination of liquiritin and glycyrrhizic acid in Wuwei shaji granules.METHODS:HPLC method was adopted.The determination was performed on Thermo scientific ODS-2 Hypersil column with mobile phase consisted of acetonitrile-0.5％ phosphoric acid (gradient elution) with flow rate of 1.0 mL/min.The detection wavelength was set at 237 nm,and column temperature was 25 ℃.The sample size was 20 μL.RESULTS:The linear ranges of liquiritin and glycyrrhizic acid were 48-480 μg(r=0.999 9) and 90-900 μg(r=0.999 9),respectively.The limits of quantitation were 0.55,2.10 μg/mL,and the limits of detection were 0.16,0.62 μg/mL.RSDs of precision,stability and reproducibility tests were all lower than 2.0％.The recoveries were 95.08％-97.58％ (RSD=0.93％,n=6)and 95.86％-99.89％ (RSD=1.67％,n=6),respectively.CONCLUSIONS:The method is simple,accurate and reproducible,and can be used for the content determination of liquiritin and glycyrrhizic acid in Wuwei shaji granules.

OBJECTIVETo investigate the chemical constituents in the leaves and branches of Myricaria alopecuroides.

METHODSolvent extraction method was employed to extract and partition. The chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20, highly porous resin HP-20. The structures of the compounds were elucidated on the basis of physiochemical properties and spectral analysis.

RESULTEleven compounds were isolated from this plant and identified as ellagic acid 3,3',4-trimethylether (1), ellagic acid 3,3'-dimethylether (2), isorhamnetin (3), kaempferol (4), 3, 5-dihydroxy-4-methoxybenzoic acid (5), daucosterol (6), 6,7,10-trihydroxy-8-octadecenoic acid (7), quercetin (8), gallic acid (9), palmitic acid (10), hexadecanoic acid, 2,3-dihydroxypropyl ester (11).

CONCLUSIONExcept 8 and 9, all compounds were isolated from M. alopecuroides for the first time. Compound 1, 2, 5, 7, 10, 11 were obtained from the genus Myricaria for the frist time.

Organic Chemicals ; analysis ; isolation & purification ; Plant Leaves ; chemistry ; Plant Stems ; chemistry ; Tamaricaceae ; chemistry

OBJECTIVETo investigate the chemical constituents of the leaves of Aquilaria sinensis, and provide a certain of basis for the comprehensive uses of the plant of A. sinensis.

METHODThe chemical constituents were isolated by various column chromatographic method. The structures were identified by spectral analyses of NMR, MS, et al.

RESULTThirteen compounds were isolated and identified as 7-hyroxy-5, 4'-dimethoxy flovone (1), 5-hydroxy-7, 4'-dimethoxy flavone (2), luteolin-7-3',4'-trimethyl (3), isocorydine (4), 4-hydroxybenzoic acid (5), triacontenoic (6), hentriacontane (7), alpha-stigmasterol (8), epifriedelanol (9), friedelan (10), friedelin (11), genkwanin (12), 5, 4'-dihyroxy-7, 3'-dimethoxy flovone (13).

CONCLUSIONCompound 4 was obtained from this genus for the first time, compounds 1, 6-11, 13 were obtained from this species for the first time.

Magnetic Resonance Spectroscopy ; Organic Chemicals ; analysis ; chemistry ; isolation & purification ; Plant Leaves ; chemistry ; Thymelaeaceae ; chemistry

Objective To investigate the clinicopathological characteristics of radioactive Iodine-refrac-tory differentiated thyroid cancer(RAIR-DTC)to provide a clinical evidence for early prediction of the thyroid cancer patients with radioactive Iodine-refractory(RAIR).Methods The data of 84 patients with undergoing thyroidectomy and 131I therapy in PLA 960 hospital from January 2010 to December 2019 were retrospectively analyzed.Thirty-nine patients with diagnosed RAIR-DTC served as the study group and 45 cases of radioactive iodine-avid differentiated thyroid cancer(RAIA-DTC)served as the control group.The clinicopathological characteristics were compared between the two groups.The logistic regression was used to analyze the inde-pendent risk factors of RAIR-DTC,and the RAIR-DTC prediction model was established.Results Compared with the RAIA-DTC group,the RAIR-DTC group had more iodine treatment times,the proportions of the pa-tients with age ≥55 years old,total iodine therapeutic dose,distant metastasis,TNM stage Ⅳ,high-risk sub-types and focal calcification were higher,the tumor maximum diameter was greater,the number of lymph node metastases was more and the probability of Ⅱ,Ⅰ+Ⅱ and non-central lymph node metastases was higher(P＞0.05).The progression-free survival rate had statistical difference between the two groups(P＜0.05).The total survival rate had no statistical difference between the two groups(P＞0.05).The binary logistic re-gression analysis results showed that the distant metastasis,high-risk histological subtype and maximum tumor diameter ≥10.5 mm were the independent risk factors for RAIR-DTC.The obtained fitting equation logit(P)=-2.259+3.330X1+2.287X2+1.606X3,the ROC curve was used to calculate the truncation val-ue of the fitted equation as-0.312 5,when logit(P)＞-0.312 5,it might develop into RAIR-DTC.Conclusion The clinicopathological characteristics of the patients with differentiated thyroid cancer could ef-fectively predict RAIR.

OBJECTIVE To study the absorption characteristics of phenylpropanoids of Mongolian medicine Tabson-2 decoction(TBD) in Caco-2 cells and to preliminarily clarify the oral absorption mechanism of TBD. METHODS Caco-2 cell monolayer model was used to analyze the uptake components of TBD in Caco-2 cells by UPLC-MS/MS, and UPLC-MS/MS analysis method was established to determine the nine best absorbed components of TBD, protocatechuic acid, neochlorogenic acid, chlorogenic acid, cryptogenic acid, 1,5-dicaffeinate quinic acid, isochlorogenic acid C, caffeic acid, dihydrocaffeic acid, chlorogenic acid. The effects of time, concentration and P-glycoprotein inhibitor on the absorption of each component were investigated. RESULTS The overall intake of caffeic acid and dihydrocaffeic acid showed an upward trend in 0-180 min, and did not show saturation. The absorption of 3-hydroxycinnamic acid was constant at about 90 min and tended to saturation. The intakes of cryptochlorogenic acid, 1,5-dicaffeinate, quinic acid, isochlorogenic acid C, neochlorogenic acid, chlorogenic acid and protocatechuic acid first decreased and then increased with time from about 90 min. The addition of P-glycoprotein inhibitor verapamil and cyclosporin A had an effect on the absorption of dihydrocaffeic acid compared with the phenylpropanoid components, indicated that dihydrocaffeic acid was the substrate of P-glycoprotein. CONCLUSION The main phenylpropanoids of TBD enter Caco-2 mainly by passive diffusion, supplemented by active transport, and the absorption process of the other eight components is not affected by the efflux of P-glycoprotein except dihydrocaffeic acid.