1.Simultaneous determination of five sesquiterpene lactones in Carpesium abrotanoides by HPLC.
China Journal of Chinese Materia Medica 2015;40(9):1783-1786
An HPLC method was established to simultaneously determine the five sesquiterpene lactones, carabrone, carabrol, 2-desoxy-4-epi-pulchellin, telekinand 11(13)-dehydroivaxillin in Carpesium abrotanoides. Samples were analyzed on a kromasil C18 column (4.6 mm x 250 mm, 5 µm); mobile phase: A was acetonitrile, B was water, with gradient elution; flow speed: 1.0 mL · min(-1); detection was carried out using a photodiode array detector at 211 nm; temperatureof column: 30 °C. The five sesquiterpene lactones were well separated with good linear correlations in the range of 0.270-2.700 (r = 0.999 7 ), 1.336-13.360 (r = 0.999 6), 0.258-2.580 (r = 0.999 7), 0.238-2.380 (r = 0.999 9), 0.490-4.900 µg (r = 0.999 9) for carabrone, carabrol, 2-desoxy-4-epi-pulchellin, telekin and 11 (13) -dehydroivaxillin. The average recoveries of these five sesquiterpene lactoneswere 96.78%-98.41% (RSD 1.3%-2.9%). The method was simple, repeatable and stable, which could be used for quality control of C. abrotanoide.
Asteraceae
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chemistry
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Chromatography, High Pressure Liquid
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methods
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Drugs, Chinese Herbal
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analysis
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Lactones
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analysis
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Sesquiterpenes
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analysis
4.Progress of rheumatoid arthritis treated by moxibustion
Danping ZHOU ; Zhiling SUN ; Xing JIANG ; Wei JI ; Xiao XU
International Journal of Traditional Chinese Medicine 2015;(5):471-474
In this article we analyzed the current development of moxibustion treating rheumatoid arthritis from the usefulness, advancement, synergistic effect as well as the variance between different kind of moxibustion. We concluded that moxibustion was an effective intervention for treating RA, and the methods used in moxibustion were searched in clinic. But the clinical tralls has a long way to go, we should pay more attention to the critical issues while in the use of moxibustion.
5.The value of dynamic contrast-enhanced MR imaging in differentiating benign and malignant soft-tissue masses
Li GAO ; Xuexiang JIANG ; Yuanchun ZHOU ; Yujie GAO ; Jiangxi XIAO ;
Chinese Journal of Radiology 2001;0(03):-
Objective To assess the diagnostic value of dynamic contrast enhanced MR imaging in predicting the efficacy of distinguishing benign from malignant soft tissue tumor Methods Dynamic contrast enhanced MR imaging was performed in 30 patients with pathologically confirmed soft tissue tumors The MR signal intensity of the ROI was plotted The slope value of the time intensity curve was analyzed Results There was significant difference between the slope value of benign and malignant lesions Based on the slope value of half minute, differentiation of benign from malignant lesions was possible with 90 9% of the sensitivity, 89 4% of the specificity, 83 3% of the positive predictive value and 94 4% of the negative predictive value Conclusion Dynamic contrast enhance MR imaging can correctly predict benignity or malignance of soft tissue tumors
6.Protective effect of chloroquine on endotoxemia mice and its influence on cytokines
Jiang ZHENG ; Hong ZHOU ; Yongling LU ; Guangxia XIAO ;
Journal of Third Military Medical University 1988;0(05):-
Objective To investigate the protective effect of chloroquine on endotoxemia mice and its inhibition on the release of cytokines induced by LPS. Methods A total of 40 mice of Kunming species were randomly divided into four groups: LPS group received LPS at 10 mg/kg, chloroquine group received chloroquine at 20 mg/kg, LPS plus chloroquine group received chloroquine at 20 mg/kg first, then LPS at 10 mg/kg and control group received only 0.9%sodium chloride at 200 ?l/20 g. The mortality was observed within seven days after injection via caudal vein. ANA 1 cell lines were cultivated in vitro . After chloroquine was first added into the cells for 3 hours, the releases of TNF ? and IL 6 in the supernatants induced by different concentrations of LPS were measured. Results Chloroquine could decrease the death of mice due to endotoxin. Mortality dropped from 100% to 50% ( P
7.A new dimeric lignan from Zanthoxylum simulans.
Ding-xiang LI ; Min LIU ; Xiao-jiang ZHOU
China Journal of Chinese Materia Medica 2015;40(14):2843-2848
To study the chemical constituents from Zanthoxylum simulans and their anti-inflammatory activity. The constituents of Z. simulans were isolated and purified using various column chromatographies. Their chemical structures were elucidated using extensive spectroscopic methods. The compounds were assayed inhibitory activity against NO production in LPS stimulated RAW 264.7 cells. Four compounds were obtained from the ethanol extract of Z. simulans and determined to be isozanthpodocarpin B(1), kobusin (2), (+)-fargesin (3), and epieudesmin (4). Compound 1 exhibited NO production inhibitory effect with IC50 value of 14.49 µmol · L(-1). Compound 1 is a new dimeric lignan and may be serve as potential anti-inflammatory agent in the future.
Animals
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Anti-Inflammatory Agents
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pharmacology
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Cells, Cultured
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Dimerization
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Lignans
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chemistry
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isolation & purification
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pharmacology
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Mice
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Nitric Oxide
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antagonists & inhibitors
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Zanthoxylum
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chemistry
8.Effects of conotoxin SO3 on free calcium ion concentration in rat cultured hippocampal neurons induced by hypoxia.
Shi-Wei JIANG ; Xiao-Wei ZHOU ; Ai-Shi DING
Chinese Journal of Applied Physiology 2005;21(4):375-422
Animals
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Calcium
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metabolism
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Cell Hypoxia
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Cells, Cultured
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Hippocampus
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cytology
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Neurons
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drug effects
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metabolism
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Rats
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Rats, Wistar
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omega-Conotoxins
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pharmacology