OBJECTIVE:To prepare Xiaodouning cream and establish a method for its quality control. METHODS: The cream was prepared using glycerol monstearate as matrix with clindamycin hydrochloride and metronidazole as principle agents. The contents of the principal agents were determined by HPLC. The stability of the cream within 6 months was investigated. RESULTS: The cream was well-distributed and delicate with suitable viscidity,and it met the criteria of Chinese Pharmacopeia(2005 edition) in test and identification. The linear ranges of clindamycin hydrochloride and metronidazole were 2.342～11.71 ?g (r=0.999 8) and 0.97～4.85 ?g (r=0.999 8),respectively,with average recoveries at 98.3% (RSD=0.7%) and 100.3% (RSD=1.6%),respectively. In the stability test,no obvious change was noted for all indexes. CONCLUSION: The preparation technology of this cream is simple and feasible and its quality is stable and controllable.

OBJECTIVE:To evaluate the effect of ambroxol on plasma concentration and pharmacokinetic parameters of roxithromycin when healthy volunteers received roxithromycin and ambroxol. METHODS: In double-period cross-over experiment, 24 healthy male volunteers received roxithromycin tablets or roxithromycin tablets combined with ambroxol tablets. Serial venous blood samples were collected at different time points after drug administration. Plasma concentrations of roxithromycin were measured by LC-MS. The pharmacokinetic parameters of roxithromycin were calculated and analyzed by variance analysis. Drug interaction was detected by 90% confidence interval. RESULTS: Main pharmacokinetic parameters of roxithromycin tablets and drug combination were as follows: tmax(1.67?0.32)h vs. (1.67?0.41)h; Cmax(10.26?2.82) mg?L-1 vs. (10.86?3.19) mg?L-1; AUC0～72(110.19?35.18) mg?h?L-1 vs. (113.42?38.72)mg?h?L-1; AUC0～∞(111.70?36.23) mg?h?L-1 vs. (115.04?39.98) mg?h?L-1. CONCLUSION:? Ambroxol has no effect on the plasma concentration and pharmacokinetics of roxithromycin in healthy volunteers.

OBJECTIVE:To establish an HPLC method for determination of gentiopicroside in Gentian liver-purging pill. METHODS:The chromatographic separation was carried out on VP-ODS(150 mm?4.6 mm,5 ?m). The mobile phase consisted of acetonitrile-0.1% phosphoric acid solution(15∶85) at a flow rate of 1.0 mL?min-1.The UV detection wavele-ngth was set at 270 nm and column temperature was kept at 25 ℃.RESULTS:The liner range of gentiopicroside was 0.355 4～5.331 ?g(r=0.999 8) and the average recovery was 100.05%(RSD=2.2%,n=6). CONCLUSION:The method is simple,rapid and accurate,and it is applicable for the quality control of Gentian liver-purging pill.

OBJECTIVE:To analysis the premier factor in formulating the fingerprint chromatography of Chinese medicinal materials METHODS:The fingerprint chromatograms of Chinese medicinal materials of different origins of breed variety and growth areas were compared RESULTS:There was obvious disparity in fingerprint chromatograms among Chinese medicinal materials of different origins of breed variety and growth areas CONCLUSION:Implementing GAP can ensure good quality of Chinese medicinal materials and is the key to formulate standard fingerprint chromatograms of Chinese medicinal materials

Objective:To explore expression of plasma omentin -1 in patients with central obesity (CO) complicated essential hypertension (EH) and its clinical significance .Methods : Serum level of omentin - 1 was measured by enzyme linked immunosorbent assay in 57 CO patients without EH (pure CO group) and 67 CO complicated EH patients (CO + EH group) ,and 56 healthy subjects (normal control group) .Blood glucose ,blood lipid and biochemical indexes were compared and analyzed among three groups ,and Logistic multi - factor gradual regression analysis was used to perform risk factor analysis .Results : Serum omentin - 1 level in CO + EH group was significantly lower than those of pure CO group and normal control group [ (25.15 ± 3.95) ng/ml vs .(45.63 ± 9.66) ng/ml ,(53.12 ± 7.97) ng/ml , P < 0.05 or < 0.01] ,but there was no significant difference between pure CO and normal control group , P > 0.05 ;Logistic multi - factor gradual regression analysis indicated that age and homeostasis model - insulin resistance index (HOMA - IR ) were independent risk factors affecting EH occurrence in obese people (OR = 1.124 ,95% CI : 1.000 - 1.248 ,P = 0.049 ;OR = 3.446 ,95% CI : 1.087 - 5.607 ,P = 0.001) ,while serum omentin - 1 level was an independent protective factor (OR = 0.423 ,95% CI : 0.210 - 0.636 , P = 0.001) .Conclusion : Serum omentin - 1 level may possess certain guiding significance in early diagnosis ,prevention and treatment for patients with central obesity complicated essential hypertension .

Objective To study the biologic characteristics of the new qnr gene subtype and multi-drug resistant mechanism in a clinical isolate of Klebsiella oxytoca.Methods We cloned and expressed the qnr gene,?-lactamase and integrase genes were detected by PCR.Results Susceptibility of transformant containing qnr gene against common fluoroquinolones was 3~25 times lower than recipient stain,but drug-resistance was 4~256 times lower than the clinical isolate.KLUC-1,TEM-1 and OXA-30 genes were also found in the isolate.Conclusions qnr gene can raise the drug-resistance to fluoroquinolones slightly. There are multiple drug-resistant genes in the strain containing the qnr gene.

Objective To investigate the protective mechanism of Interleukin 33 (IL-33) in preventing myocardial ischemia and reperfusion injury in rats. Methods A rat model with myocardial I/R with 32the adult male SD rats , which were randomly divided into 4 groups: SO group , I/R group , IL-33 + I/R group , SB230580 + IL-33 + I/R group. The levels of LDH, CK, TNF-α, IL-6, HMGB1, Bcl-2, total caspase-3, cleaved caspase-3 and P-P38 were detected. Results After reperfusion, IL-33 significantly decreased the levels of serum LDH and CK and the expression of TNF-α, IL-6 , cleaved caspase-3 , but significantly increased the expressions of Bcl-2, p-P38 (P < 0.05). SB230580 attenuated the protective role of IL-33 on myocardial I/R in a certain degree. Conclusions IL-33 may prevent myocardial I/R injury via inhibiting inflammation and cardiocyteapoptosis by way of P38 MAPK signaling pathway.

Aim To purify Phospholipid-binding anticoagulation protein(PBAP) from Agkistrodon halys Brevicaudus Venom and study the biochemical characterization.Methods The Phospholipid-binding anticoagulation protein was purified from Agkistrodon halys Brevicaudus Venom by Cation ion exchange chromatography on CM Sephadex C-25 and negative ion exchange chromatography on DEAE Sepharose CL-6B,gel filtration on Sephacryl S-200 and Sephadex G-75 chromatography.Its anticoagulant activities in vitro were assayed by activated partial thromboplastin time(APTT);its molecular weight was calculated by SDS-polyacrylamide gel electrophoresis(SDS-PAGE) and its isoelectric point was estimated by the isoelectric focusing electrophoresis.Binding experiments of anticoagulation protein to phospholipids vesicles were performed with thinlayer chromatography.Results A kind of protein was purified from Agkistrodon halys Brevicaudus Venom which was able to prolong APTT.The SDSPAGE showed that it was dimer and its molecular weight was 24.0?10~3 under non-reducing condition and 14.6?10~3 under reducing condition.The isoelectric point was pH 5.2 by the isoelectric focusing electrophoresis.Having arginine ester-hydrolyzing enzyme and binding Phospholipid activify,its effect on APTT was activity stronger with concentration increasing.Conclusion It is a successful method of the purification of Phospholipid-binding anticoagulation protein from the Agkistrodon halys Brevicaudus Venom.

Objective To investigate the effect of preconditioning with sodium butyrate on myocardial I/R injury. Methods Anesthetized rats were treated with sodium butyrate (100 or 300 mg/kg, i.p.) 30 mins before ischemia, and then subjected to ischemia for 30 min followed by reperfusion for 4 h. LDH, CK, TNF-α, IL-6, HMGB1, infarct size, MDA and SOD activity were measured. The infracted size was tested by TTC assay; The expression of HMGB1 was observed by western blot. Results After 4 h reperfusion, pretreatment of sodium butyrate (300 mg/kg) could significantly reduce the infarct size and the levels of LDH and CK (P<0.05)comparing to the control group; inhibit the increase of the MDA level and the decrease of the SOD level(P<0.05), also inhibit the expression of TNF-α, IL-6 and HMGB1 (all P < 0.05) induced by I/R. Conclusion Preconditioning of sodium butyrate can attenuate myocardial I/R injury by inhibiting inflammation response.