1.AN ANALYSIS OF ADVERSE REACTION OF CHINESE HERBAL MEDICINE REPORTED IN CHINESE LITERATURE
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(03):-
Various types of adverse drug reactions (ADR) and deaths elicited by patent drugs and nyections of herbal medicines which were reported in Chinese literature were reviewed and analyzed. ADR characteristic figure was employed for the study. It is emphasized that an objective and correct evaluation of safety of herbal medicines is an important subject of clinical pharmacology in the field of traditional Chinese medicne.
2.Distribution of Bactericidal/permeability Increasing Protein mRNA in Rat
Chinese Journal of Nosocomiology 2006;0(06):-
OBJECTIVE To investigate systematically the existence of bactericidal/permeability increasing protein(BPI) in normal rat organs and tissues,for providing important information about BPI in clinical application.METHODS The total RNA was extracted from organs and tissues homogenates.Then the first-strand cDNA was synthesized and BPI DNA was amplified by PCR.RESULTS BPI mRNA was found in kidneys,ovary,testes,liver,small intestine,large intestine,thymus,spleen and neutrophils of 21 various organs and tissues.Among them,BPI mRNA content was the richest in testes,relatively rich in liver and large intestine.CONCLUSIONS BPI mRNA presents in many organs and tissues of rat and it indicates that the role of BPI in host defense against bacterial infection is relatively widespread.
3.Extraction and Separation of Gingerols and Assaying of [6]-gingerol
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(03):-
Objective To extract and separate crude gingerols and to determine the content of [6]-gingerol in crude gingerols.Methods Crude gingerols were separated from the ginger supercritical-CO2 extracts by silica gel dry column chromatography with solvent system of diethyl ether-n-hexane(7:3).The content of [6]-gingerol in crude gingerols was determined by HPLC.Results [6]-gingerol content in the prepared crude gingerols by silica gel dry column chromatography arrived 52.87 %(m/m).[6]-gingerol had a good linearity in the range of 0.512~ 3.075 ? g,r=0.999 9,and the average recovery was 99.19 %,RSD=1.58 % .Conclusion Silica gel dry column chromatography can be used to quickly,effectively prepare crude gingerols,in which [6]-gingerol content is high,and can supply enough material for further research.The liquid chromatographic analysis of [6]-gingerol is simple,reliable,reproducible and can be used for the quality control of crude gingerols.
4.GC-MS Assay for Borneol of Compound Danshen Dropping Pill in Serum
Tianlei HUANG ; Ningsheng WANG
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(05):-
A specific and sensitive GC - MS method for assaying Borneol in the serum of rats medicated orally with compound Danshen dropping pill was developed. Naphthalene was used as the internal standard, the dectection was performed by SIM. The calibration curve was linear in the range from 0.00505 to 40. 1 ?g/mL, the detectable limit of this method was 1 ng/mL. The extraction recovery of Borneol was 72.82% - 86.77%. The RSD of within - day and day - to - day was less than 2.76% and 1.93% respectively. The results showed that this method was simple, sensitive, accurate and good reproducibility , and can be used in further pharmacokinetic study of Borneol in danshen Dropping pill.
5.Assay of Ginsenoside Rg_1 and Rb_1 and Notoginsenoside R_1 in Radix Notoginseng by HPLC/ELSD with Solid Phase Extraction
Yongzhuo HUANG ; Ningsheng WANG
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(03):-
Objective To establish a method for determinin g the content of ginsenoside Rg 1 and Rb 1 and notoginsenoside R 1 in Radix Notoginseng.Methods HPLC /ELSD with solid phase extraction(SPE)was applied.The chromatographic conditions were:Hypersil amino -column (200mm ?4.0mm,5?m),acetonitrile -isopropanol -ammon ium acetate(75∶20∶5;acetic acid adjusted pH to5.0)as mobile phrase,flow rate at 0.6mL?min -1 ,column temperature at room temperature,ELSD nebulization at 55℃and flow rate of nitrogen at 2.3L?min -1 Results The linear range of ginseno-side Rg 1 and Rb 1 ,notoginsenoside R 1 was from 1.0to 10.0?g .The average recoveries were 95.5%~102.5%.The inter -day RSD and intra -day were less than 2%and 4%respectively.Conclusion The method is simple and accu-rate,and can be used for the quality contro l of Radix Notoginseng and its preparations.
6.Effects of cinnabar and realgar on lactate dehydrogenase and isoenzymes in rats with infectious cerebral injury
Yishan TANG ; Weiping OU ; Ningsheng WANG
Chinese Journal of Tissue Engineering Research 2005;9(5):251-253
BACKGROUND: In order to improve the medication safety and remove export obstacles of Chinese preparations contained heavy metal and arsenide (cinnabar, realgar), it is necessary to carry on the evaluation on the efficacy and safety of cinnabar and realgar. At present, it has not been clear concerning to the pharmacodynamic mechanism of cinnabar and realgar in compound prescriptions yet.OBJECTIVE: To study the differences in cinnabar and realgar in angong niuhuang wan in the organism physiologically and pathologically so as to probe into those pharmacodynamic mechanism.DESIGN: A randomized and controlled trial.SETTING: Institute of Clinical Pharmacology of one university.MATERIALS: The experiment was performed in Institute of Clinical Pharmacology of Guangzhou University of Traditional Chinese Medicine in January 2003. Totally 51 male SD rats weighted varied from 250 g to 300 g were employed, provided by Experimental Animal Center of First Military Medical University of Chinese PLA.METHODS: SD rats were randomized into 6 groups(8-10 rats/group),named as normal group, normal & angong niuhuang san (integral recipe) group(278 mg/kg), normal & cinnabar and realgar omitted angong niuhuang san(disassembled recipe) group(222.7 mg/kg), cerebral edema model group(ligature on unilateral carotid artery by injection of pertussis bacilli (PB), 2 500 million/kg), model & integral recipe group (medication 278 mg/kg was done 1 hour before model preparation), model & disassembled recipe group(medication 222.7 mg/kg was done 1 hour before model preparation) . Five hours later after once medication(4 hours later after PB injection in model group), blood was collected and brain homogenate was prepared.MAIN OUTCOME MEASURES: Brain tissues, serum lactate dehydrogenase(LDH) activity and percentage enzyme activity of lactate dehydrogenase isoenzymes (LDH1-5).RESULTS: Compared with normal group, the general activity of LDH in normal & integral recipe group and normal & disassembled recipe group was significantly improved by 32.4% to 38.4% ( P < 0.05); percentage enzyme activity of LDH1,2 was significantly increased( P < 0.01 ), and that of LDH4, 5 was reduced( P <0.01) . Except LDH5, there were no significant differences in enzyme activity of isoenzymes in two groups. Compared with model group, the general activity of LDH in model & integral recipe group and model & disassembled recipe group was significantly improved by 23.4% to 38.5% ( P < 0.01); percentage enzyme activity of LDH5 was significantly increased( P < 0.01 ), there were no significant differences in two groups. In model & integral recipe group, percentage enzyme activity of LDH2,3 was significantly decreased( P < 0.01), and that of LDH1,4 was no significant change. In model & disassemble recipe group, percentage enzyme activity of LDH1,4 was significantly reduced( P < 0. 05, 0.01 ) and that of LDH2,3 was no significant change.CONCLUSION: In normal physiological state, angong niuhuang san produces a certain injuries on cardiac muscle and kidney. In pathological state of infectious cerebral edema, both integral and disassembled recipes inhibit LDH enzymes that have been over-activated, but the significant differences did not presented between both. Cinnabar and realgar in compound prescript provide the effects in various degrees on levels of LDH isoemzymas.
7.Studies on the Absorption Kinetics of Zingerone in Rats Intestines
Xiaotao HUANG ; Suiqing MI ; Ningsheng WANG
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(05):-
Objective To determine the intestinal absorption characters of zingerone in rats.Methods The concentration of zingerone in the intestine perfusate was determined by HPLC.The absorption kinetics were obtained by the in-situ perfusion method in rats.Results The absorption rate constants(Ka) of zingerone were 0.0137,0.0135 and 0.0139 min-1 at the concentration of 25.0,50.0 and 100.0 ?g?mL-1,respectively;Ka of zingerone in the duodenum,jejunum,ileum and colon were 0.0070,0.0031,0.0032 and 0.0026 min-1,respectively.Conclusion Concentration of zingerone has no significant effect on its absorption kinetics.The best absorption segment of the intestine was duodenum,ileum,jejunum and colon by turns.The intestinal absorption of zingerone has the first-order kinetic characters with passive diffusion mechanism.
8.Effect of Borneol on ICAM-1 Expression in Retina of Ischemia-reperfusion Rat Model
Wei ZHAO ; Ningsheng WANG ; Suiqing MI
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(05):-
Objective To investigate the effect of borneol administered by gastric gavage or external application on ICAM-1 expression in rat retina with ischemia-reperfusion injury.Methods Rat ischemia-reperfusion model was established.Laser microscope and biological analysis microsoft were used to observe the change of ICAM-1 expression in retina or rats after gastric gavage or external application of borneol.Results Borneol administered by gastric gavage or external application obviously decreased the expression of ICAM-1 after the modeling for 24 hours,the difference being significant as compared with that in the model group(P
9.Determination of Borneol in Aqueous Humor and Perfusate of Rabbit Cornea by Gas Chromatography
Haitao WU ; Youzhi TANG ; Ningsheng WANG
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(06):-
Objective To establish gas chromatography for determining the contents of borneol in aqueous humor and perfusate of rabbit cornea.Methods Naphthalene was used as the internal standard,samples were extracted by ethyl acetate and the chromatographic procedure was carried out in OV-1701 capillary column.The parameters were set as follows:Inject Temp,210 ℃;Oven Temp,30 ℃;FID Temp,250 ℃;Carrier gas:Nitrogen,3.0psi;Hydrogen,45 ml/min;Air,450 ml/min;split ratio,10:1.Results Borneol and isoborneol were well separated from other components.Borneol and isoborneol had an good linearity in the rang of 0.2~20 ?g/ml,R2 was 0.9953 for borneol and 0.9902 for isoborneol;and the intra-day and inter-day RSD were less than 9.68 %and 12.60 %respectively.Conclusion The method is simple and precise,and can be used for determining borneol in ophthalmological preparation.
10.Study on Zhipu Hollow Suppository in Preventing Postoperative Ankylenteron
Heng ZHANG ; Degang TANG ; Ningsheng WANG
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(06):-
Objective To observe the effect of Zhipu Hollow Suppository (ZHS) on postoperative ankylenteron in rats,and to investigate the possible mechanism.Methods Forty Wistar rats were randomly divided into model group,ZPS group,positive control group,and blank control group,10 rats in each group.Rats were given corresponding drugs according to the experimental design after modeling.Rats were executed after medication for one week,and the pathologic changes of ileal serosa were observed under scanning electron microscope and the ultrastructure of ileal serosa cells was observed under transmission electron microscope.Results Results of the examination under scanning electron microscope showed that the arrangement of ileal-serosa mesothelial cells in ZHS group was regular,and the network structure arranged spindle-shaped with uniformity size and with the shape close to the normal ones.There was proliferation in mesothelial cells in the exposed base layer.Under the transmission electron microscope,mesothelial cells recovered well and the proliferation of fibroblasts was not obviously in ZHS group,but mesothelial cells disappeared and the secretion of collagen by fibroblasts was actively in the model group.Conclusion ZHS can prevent ankylenteron by promoting the ileal-serosa mesothelial cell proliferation,improving the ileal-serosa ultrastructure and protecting the ileal serosa.