1.Polyphenols from Terminalia chebula
Gang DING ; Yanze LIU ; Maoping SONG ; Dapeng ZOU ; Longsheng SHENG
Journal of China Pharmaceutical University 2001;(3):193-196
AIM The purpose is to examine the chemical constituents in the fruits of Terminalia chebula. METHODS Using combined chromatographies over silica gel, Diaion HP-20, Toyopearl HW-40 and MCI gel CHP -20P to purify the constituents of Terminalia chebula, and identifying their structures on the basis of spectroscopic and chemical evidence were purified. RESULTS Twenty one hydrolyzable tannins and related polyphenols were characterized, here reports eight of them: 2,3-(S)-HHDP-D-glucose, 3,6-di-O-galloyl-D-glucose, 6-O-galloyl-D-glucose, (-)-shikimide 4-O-gallate, (-)-shikimic acid 3-O-gallate+(-)-shikimic acid 5-O-gallate, methyl gallate and 1,2,6-tri-O-galloyl-β-D-glucose were reported. CONCLUSION The above eight polyphenols were obtained from myrobalans for the first time.
2.Studies on chemical constituents of Chamaenerion angustifolium Ⅰ. Flavonoids from Chamaenerion angustifolium
Yanze LIU ; Caifang WANG ; Zhenzhong ZHANG ; Quanbin HAN ; Gang DING ;
Chinese Traditional and Herbal Drugs 1994;0(04):-
Object To study the chemical constituents of Chamaenerion angustifolium (L ) Scop Methods The compounds were isolated on Diaion HP 20 (Tsk), Toyoperari HW 40 (C), MCI gel CHP 20P (Mitsubishi) column and their structures were identified by physiochemical properties and spectral methods Results Four flavonoids were isolated from the whole plant of C angustifolium and they were identified as quercetin 3 O ? D galactoside (Ⅰ), quercetin 3 O ? L arabinoside (Ⅱ), quercetin 3 O (6′ O galloyl) ? D galactoside (Ⅲ), quercetin (Ⅳ) respectively Conclusion Compounds Ⅰ, Ⅱ, Ⅲ were isolated from this plant for the first time
3.ANALYSIS OF TANNINS IN FRUCTUS CHEBULAE AND ITS CONFUSION VARIETIES BY HPCE
Gang DING ; Yunru LU ; Chunru JI ; Yanze LIU
Acta Pharmaceutica Sinica 2001;36(4):292-295
AIM To analyze the hydrolyzable tannins chebulinic acid (I) and chebulagic acid(II) in Fructus Chebulae and its confusion varieties by using high performance capillary electrophoresis (HPCE) method. METHODS Using a capillary (375 μm OD×50 μm ID; 81.5 cm×61.5 cm) and a power supply set at 24 kV, with phosphate-borate buffer containing 20 mmol*L-1 Na2HPO4-60 mmol*L-1 boric acid and a UV detector at 280 nm, sample solution was loaded in decompression mode at the positive end of the capillary, the loading time was 5 s. RESULTS The linear ranges of I and II were 0.0842-0.842 and 0.0940-0.940 mg*mL-1 respectively, the correlation coefficient were 0.9966 and 0.9957, the average recoveries were 95.6% (RSD=4.0%, n=5) and 95.0% (RSD=4.4%, n=5), the RSDs (n=5) of measurement precision test were 2.2% and 1.7%, the RSDs (n=6) of reproduction test were 5.4% and 4.0% respectively. The contents of I and II were obviously interrelated with the variety and characteristics of Fructus Chebulae, the contents of I and II in the confusion varieties of Fructus Chebulae were very low. CONCLUSION It is suitable to use I and II as the criterion in quality evaluation of Fructus Chebulae, and the HPCE method is effective for quality evaluation of the crude Fructus Chebulae.
4.Wheat grain moxibustion relieves cyclophosphamide-induced mouse spleen injury via IκBα
Yanting CHENG ; Jie LI ; Yawei HOU ; Bang ZHANG ; Xu FAN ; Yanze DING
Immunological Journal 2024;40(4):353-358
This study was designed to investigate the effects of wheat grain moxibustion on the immune function of mice immunosuppressed by cyclophosphamide,and to delve into the potential mechanisms by analyzing factors related to NF-κB signaling pathway.Sixty SPF-grade ICR mice were randomly allocated into four groups:blank group,model group,traditional Chinese medicine group and wheat grain moxibustion group,with 15 mice in each group.Immunosuppression was induced in mice of the model,traditional Chinese medicine and wheat grain moxibustion groups by intraperitoneal injection of cyclophosphamide at 80 mg/kg daily for three days,while mice of the blank group received an equivalent volume of saline.The traditional Chinese medicine group was treated with oral administration of Zhēn Qí Fú Zhèng granules,and the wheat grain moxibustion group was treated with wheat grain moxibustion at"Da Zhui,"bilateral"Zu San Li,"and bilateral"San Yin Jiao"once a day for seven consecutive days.After corresponding treatment,spleens were harvested from the mice of different groups for pathological examination,and enzyme-linked immunosorbent assay(ELISA)was utilized to measure the serum levels of IL-2,IL-4,TNF-α and IFN-γ.Additionally,Western blot analysis was conducted to assess the protein expression levels of IκBα and P-IκBα in spleen tissue.Compared with the blank group,mice in the model group exhibited poorer general conditions,significantly reduced white blood cell(WBC)count(P<0.01),extensive damage in spleen tissue,significant decreases in serum IL-4 and IL-2 concentrations,increases in TNF-α and IFN-γ levels(P<0.01),lower level of P-IκBα protein in spleen tissue(P<0.01),and higher level of IκBα protein(P<0.01).These changes mentioned above were reversed in mice of both the wheat grain moxibustion group and the traditional Chinese medicine group(P<0.01).Compared to the traditional Chinese medicine group,on the last day of treatment,the wheat grain moxibustion group showed slightly higher WBC counts(P<0.05),better tissue repair,and lower levels of IFN-γ(P<0.01).In conclusion,wheat grain moxibustion can affect the activity of NF-κB signaling pathway by regulating the relative expression of IκBα and P-IκBα,and then regulate the immune response of the body,thus play a role in alleviating the immunosuppression caused by cyclophosphamide.