中药材最新文献

Objective: To investigate the mechanism of Yiqi Chutan recipe( YCR) in the treatment of lung cancer with splenasthenic syndrome from the perspective of the endoplasmic reticulum stress( ERS).

Methods: 60 mice were successfully modeled as Lewis lung cancer mice with spleen deficiency, which were randomly divided into model group( normal saline),cisplatin group( 1 mg / kg),low dose( 2 g/kg) YCR group, middle dose( 4 g/kg) YCR group,high dose( 8 g/kg) YCR group and the combined medication group( YCR 4 g/kg + cisplatin 1 mg / kg),with 10 mice in each group. The mice were killed after 14 days,the size and weight of tumor in mice were measured,morphological changes of tumor were observed by HE staining method, the expression of CHOP and DR5 protein in tumor tissue was detected by immunohistochemical method and Western blot method.

Results: Compared with model group, the volume and weight of tumor in cisplatin group, middle dose YCR group, high dose YCR group and combined medication group were significantly decreased( P < 0. 01),and the tumor cells in transplanted tumor were large necrosis and the protein expression of CHOP and DR5 were increased significantly( P < 0. 01). The effect in treatment of lung cancer with splenasthenic syndrone in combined medication group was higher( P < 0. 05 or P < 0. 01).

Conclusion: Yiqi Chutan recipe has different degrees of inhibition on lung cancer, the combined use of cisplatin can obviously improve the curative effect. The mechanism may be related to up-regulating the expression of CHOP and DR5 in endoplasmic reticulum stress-related proteins.

Objective: To study the chemical constituents of the methylene chloride extract of Lonicerae Japonicae Flos.

Methods: The compounds were isolated and purified by silica gel column chromatography,Sephadex LH-20 gel column chromatography and recrystallization. The structures were elucidated by the physical and chemical properties,MS,1H-NMR and13C-NMR spectroscopy.

Results: Nine compounds were isolated and their structures were identified as β-sitosterol( 1),benzoic acid( 2),5-hydroxy-7,3’,4’-trimethoxyflavone( 3),tetrapedic acid B( 4),tricin( 5),hydnocarpin D( 6),6,7,10-trihydroxy-8-octadecenoic acid( 7),5’-methoxyhydnocarpin-D( 8) and daucosterol( 9).

Conclusion: Compound 2,4,7,8 are isolated from this plant,compounds 2,7,8 are isolated from Caprifoliaceae family for the first time.

Objective: To establish HPLC fingerprint in the root of Amorpha fruticosa, and simultaneously to determine the content of calycosin-7-O-β-D-glucopyranoside, ononin, calycosin, formononetin.

Methods: The analytical column was Diamonsil C18( 250 mm ×4. 6 mm,5 μm). The mobile phase was acetonitrile( A)-water( B)( containing 0. 2% phosphoric acid) in gradient elution, and the detection wavelength was set at 260 nm. "Chromatographic fingerprint similarity evaluation software "version( 2004A) was used to evaluate similarity for the ten batches medicinal materials,and SPSS software was used for cluster analysis.

Results: The HPLC fingerprint of the root of Amorpha fruticosa was established with good separation, and four chemical compositions were determinated. 16 common peaks were defined in the HPLC fingerprint among the 10 batches of the root of Amorpa fruticosa. The similarity among them was more than0. 90.

Conclusion: This analytical method has strong features,with a good repeatability and the method is simple, which can be used efficiently in the quality control in the root of Amorpha fruticosa.

Objective: To investigate the chemical constituents from the barks of Eucommia ulmoides.

Methods: After the reflux extraction of the barks of Eucommia ulmoides with 95% ethanol, and the ethyl acetate part was separated and purified by chromatographic methods, such as silica gel, Sephadex LH-20, and ODS C18. The structures of isolated compounds were elucidated with modern spectral methods.

Results: Five lignanoids and three phenylpropanoids were isolated from Eucommia ulmoieds, which were confirmed as cycloolivil (1), (7R, 8S, 8'R)-4, 9, 4', 8'-tetrahydroxy-3, 3'-dimethyoxyl-7, 9'-monoepoxy lignan (2), erythro-guaiacyl-glycerol-β-coniferyl aldehyde ether (3), pinonesinol (4), 8-hydroxypinoresinol (5), C-veratroylglycol (6), β-hydroxyl-3-methoxyl-4-hydroxyacetophenone (7) and 3-hydroxy-4-methoxycinnamaladehyde (8).

Conclusion: Compounds 5–8 are isolated from this plant for the first time.

Objective: To investigate the mechanism of sodium aescinate on the apoptosis of gastric cancer BGC-823 cells and AGS cells.

Methods: CCK-8 assay was used to detect the cell viability of cancer cells; cells morphological changes were observed by inverted microscope; changes in nuclear morphology were observed by fluorescence inverted microscope after DAPI staining; cells apoptosis rate was detected by flow cytometry; Western blotting was used to detected the phosphorylation of JAK-1 and STAT-1; laser confocal microscopy was used to observed the nuclear translocation of STAT-1.

Results: Sodium aescinate inhibited cells proliferation in a concentration dependent manner, and changed the cells morphology and nuclear morphology, significantly up-regulated the apoptosis rate of gastric cancer BGC-823 cells and AGS cells, and down-regulated the phosphorylation of JAK-1, STAT-1 protein, inhibited the nuclear translocation of STAT-1.

Conclusion: Sodium aescinate inhibit the proliferation and induce apoptosis in the gastric cancer BGC-823 cells and AGS cells, and this process can be implemented by inhibiting the JAK-1/STAT-1 signaling pathway.

Objective: To study the chemical constituents in the bark of Sophora japonica.

Methods: The chemical constituents were separated and purified by silica gel,Sephadex LH-20 column chromatography,and HPLC. Their structures were identified by various spectroscopic analyses.

Results: Eleven compounds were obtained from the bark of Sophora japonica. Their structures were identified as( +)-oxymatrine( 1),isosophoridine( 2),lupanine( 3),( +)-matrine( 4),( +)-sophoramine( 5),(-)-14β-hydroxymatrine( 6),(-)-7,11-dehydromatrine( 7),alopecurin A( 8),( +)-sophoranol( 9),α-isolupanine( 10) and( +)-allomatrine( 11).

Conclusion: Compounds 2,3,5 and 7 ~ 11 are isolated from this plant for the first time.

Objective: The root yield and active constituent contents were analyzed from four Salvia miltiorrhiza cultivars grown at three different locations( Zhuyang, Changqing, and Taian, Shandong Province) to determine the influence of environmental conditions and cultivars. .

Methods: Phenolic acids and tanshinones were analyzed by HPLC method. Total phenolic acids content were analyzed by FolinCiocalteu method. Klason method was used to determine the content of lignin.

Results: The root yield and the active constituent contents were significantly affected by different environments and cultivars of Salvia miltiorrhiza. The root yield was negatively correlated with active constituent contents. Salvia miltiorrhiza of Zhuyang location had the highest active constituent content, but it had the lowest root yield. Salvia miltiorrhiza of Taian location had the lowest active constituent contents, while it had the highest root yield. Salvia miltiorrhiza of Changqing location had relatively higher bio-yields of phenolic acids and tanshinones, which made it suitable for Salvia miltiorrhiza cultivation. Furthermore, compared with three other cultivars,105 cultivar could remain the salvianolic acid B stable, which indicating that 105 cultivar was possible related to resistances.

Conclusion: The research provides a theoretical basis for the selecting of the optimal cultivar and the optimal environmental condition.

Objective: To analyze volatile components and special aroma in fresh roots of Codonopsis Radix.

Methods: Volatile components in fresh Codonopsis Radix origined from three plant sources were analyzed by HS-GC-MS, and n-hexanal, 2-hexenal and n-hexanol were quantified by HS-GC.

Results: 64 constituents have been identified in Codonopsis Radix,which containing ten alcohol,20 aldehyde,14 terpene, three ketone, four ester, four furan, three acid, one olefin, one alkane, two sulfide and two other compounds. The total percentage of n-hexanal,2-hexenal and n-hexanol was large, which were the main volatile compounds in Codonopsis Radix. The content of n-hexanal in Lu Dangshen, Baitiao Dangshen, Wen Dangshen, Feng Dangshen and Banqiao Dangshen were 54. 89%,59. 01%,55. 07%,42. 42% and 56. 74%,which were the major volatile component contributing to special aroma in Codonopsis Radix. 61 compounds have been identified in Lu Dangshen including 8 specific compounds. An external calibration method was established for simultaneous determination of n-hexanal,2-hexenal and hexanol in Codonopsis Radix. The results showed that all calibration curve three volatile components exhibited good linearity at a range of concentrations( R2≥0. 9995). The recoveries of n-hexanal, 2-hexenal and hexanol were 100. 1%,94. 8% and 112. 6%,and the RSD were 4. 4%,8. 7% and 8. 1%,respectively. The analysis suggested that the content of n-hexanal in Lu Dangshen was 200. 41 μg / g and significantly higher than that in Banqiao Dangshen, Wen Dangshen and Feng Dangshen while similar to Baitiao Dangshen. The content of hexanol in three-year-old Lu Dangshen was significantly higher than that in twoyear-old Lu Dangshen.

Conclusion: The present research indicates that special aroma is an important feature of authentic Dangshen.

Objective: To study the chemical constituents of Securidaca inappendiculata.

Methods: The chemical constituents were isolated and purified by chromatography on silica gel, Sephadex LH-20 columns. Their structures were elucidated by means of physicochemical properties and spectroscopic analysis.

Results: Ten compounds were identified from the dichloromethane fraction of Securidaca inappendiculata, and identified as 1,7-dihydroxyxanthone (1), 1,3,8-trihydroxy-2-methoxyxanthone (2), 1,7-dihydroxy-3,4-dimethoxyxanthone (3), 1,3,8-trihydroxy-4-methoxyxanthone (4), 7-hydroxy-1,2-dimethoxyxanthone (5), 1,3,6-trihydroxy-2,7-dimethoxyxanthone (6), 1,4, 8-trihydroxyxanthone (7), 1,7-dihydroxy-3-methoxyxanthone (8), 1,6-dihydroxy-7-methoxyxanthone (9) and 1,8-dihydroxy-3,4-dimethoxyxanthone (10).

Conclusion: Compounds 7–10 are isolated from this plant for the first time, and compounds 7–10 are isolated from this genus for the first time.

Objective: To study the chemical constituents and biological activity of Rubus sachalinensis.

Methods: The compounds in the ethyl acetate and n-butanol fraction were isolated and purified by macroporous resin,Sephadex LH-20 column chromatography,and reverse-phase preparative HPLC. The structures were identified by various spectroscopic data such as 1D,2D-NMR,HRMS. Antioxidant,anti-inflammatory and cytotoxicity of the compounds were determined by FRAP,Griess and MTT methods.

Results: Eight compounds were isolated from the ethyl acetate and n-butanol extract of Rubus sachalinensis,and identified as kaempferol-3-O-β-D-butyl glucuronate( 1),quercetin-3-O-β-D-butyl glucuronate( 2),quercetin-3-O-β-D-glucopyranoside( 3),cis-tiliroside( 4),tiliroside( 5),quercetin-3-O-β-D-ethyl glucuronate( 6),quercetin( 7) and kaempferol( 8). Activity assay showed that the compounds 1 ~ 8 had different levels of antioxidant activity,all the compounds showed cytotoxicities of IC50 greater than 200 μmol / L.

Conclusion: Flavonoids are the main antioxidant consitituents of Rubus sachalinensis and have a good anti-inflammatory activity. All the compounds are isolated from this plant for the first time,compounds 1,2,6 are obtained from the this genus for the first time.