OBJECTIVE:To establish the quality standard of Danqitong tablets.METHODS:Salvia miltiorrhiza and Ra-dix Astragali in the formulation were identified qualitatively by TLC,and the contents of total saponins and tanshinone-Ⅱ A in the tablets were determined by visible ultraviolet spectrophotometry and HPLC,respectively.RESULTS:The TLC spots of Salvia miltiorrhiza and Radix Astragali were clear and well-separated.The linear ranges of total saponins and tanshinone-Ⅱ A were 0.056～0.12 mg?mL-1(r=0.999 3)and 0.002 019～0.032 13 mg?mL-1(r=0.999 9),respectively,and the average recovery rates were 97.61%(RSD=2.10%)and 95.74%(RSD=1.93%),respectively.CONCLUSION:The established standard is applicable for the quality control of Danqitong tablets.

ObjectiveTo study the effects of Tanreqing injectio (a Chinese herb preparation acts as an anti-inflammatory agent to eliminate the pulmonary infection) on inflammatory cytokines of rats with acute lung injury (ALI). MethodsFifty-six clean grade healthy male SD rats were randomly (random number) divided into three groups: normal group, model group and treatment group. Rats in the model group and treatment group were injected with lipopolysaccharide (LPS) into tail vein. Rats in treatment group were treated with Tanreqing injection one hour after LPS injection. The observing intervals were respectively set in 2 h, 4 h and 6 h. At each observing interval, TNF-α, IL-1 β and IL-8 in brochoalveolar lavage fluid (BALF) were detected by radioimmunoassay, and the ratio of polymorphonuclear neutrophiles (ωPMN) in BALF were calculated by Wright-Giermsa staining, as well as to observe the pathological changes of lungs and to examine the lung wet/dry weight ratio (W/D). Data were analyzed with SPSS version 17.0 software. ResultsAt 2, 4 and 6 h intervals, TNF-α, IL-1β, IL-8 and ωPMN in BALF were significantly higher in model group than those in normal group (P ＜0. 05 or P ＜0. 01 ), the lung W/D in model group were obviously higher than those in normal group ( P ＜ 0. 01 ), and the pathological injury of lung tissue in model group were severe. At each observing interval, compared with model group,TNF-o, IL-1 β, IL-8 and oPMN in BALF were significantly reduced in treatment group ( P ＜ 0. 05 or P ＜0.01 ), the lung W/D in treatment group were obviously decreased ( P ＜0.01 ), and the lung injury were attenuated in treatment group. ConclusionsTanreqing injection could provide partly protection in rats with ALI by inhibiting inflammatory factor.

Objective To determine an optimal method of in vivo endothelialization when homograft valve (HV) leaflets are treated with different methods. Methods Twenty five fresh HV leaflets were divided into five groups randomly. The leaflets of GroupⅠ were fresh HV ones without any treatment; GroupⅡwere cryopreserved in liquid nitrogen for 1 month; Group Ⅲ was treated by DOA; GroupⅣ was treated by 25 g?L -1 glutaraldehyde; Group Ⅴ was first treated by hypotonic/hypertonic, then with an enzyme-based solution. Each HV leaflet was trimmed to 2 mm one which was cultured with lymphocyte from the recipient. In order to compare the antigenicity of HV leaflets, 3H-TdR incorporation was observed after tissue-cell coculture and stimulous index (SI) was calculated. The HV leaflets of different groups were implanted into the sheep's femorofemoropopliteal for three months; then the following procedures were done. Immunohistochemistry of Ⅷ factor correlative antigen was used to identify the cells property; observation of growth condition of EC and superficial morphosis of HV leaflets was made with scanning election microscope (SEM). Results Multiple comparison showed that SI of Groups Ⅱ, Ⅲ, Ⅳ, and Ⅴ differed significantly from Group Ⅰ(P0.05), but Group Ⅲ, Ⅳ, and Ⅴ all had significant differences from GroupⅡ (P

OBJECTIVE:To investigate the regulation effects of policosanol on lowering cholesterol and its enzymatic mechanism.METHODS:The rats were randomly assigned into control group,policosanol prevention group (4.0 mg?kg-1?d-1),policosanol low-dose,medium-dose and high-dose groups (4.0 mg?kg-1?d-1,6.0 mg?kg-1?d-1,8.0 mg?kg-1?d-1),lovastatin group (positive control) and hyperlipoidemia model group.The last five groups were induced hyperlipoidemia model for 4 weeks.Blood samples were collected after 6 weeks administration (i.g.).The levels of TC,TG,LDL-C and HDL-C in the serum were determined.Body weight and liver weight were measured and hepatic index was calculated.The activity of lecithin cholesterol acyl transferase (LCAT) in serum,hepatic lipoprotein lipase (LPL) and hepatic lipase (HL) were detected.RESULTS:Policosanol remarkably decreased the levels of TC (ranged from 39.1% to 43.3%) and LDL-C (ranged from 66.6% to 80.7%) in serum and hepatic index (ranged from 11.1% to 11.8%) (P

To investigate the influence of recombinant human augmenter of liver regeneration (hALR) on stromelysin 1 gene expression in rats with fibrotic liver. CCl 4 or albumin induced liver fibrosis in rats was established, and different dosages of recombinant human augmenter of liver regeneration were given to rats with liver fibrosis.Liver specimens were obtained at different intervals of treatment , total RNA of liver tissues were isolated and stromelysin 1 gene expression was measured by reverse transcription polymerase chain reaction (RT PCR) . The results showed that in both rat models of experimental liver fibrosis , stromelysin 1 gene expression levels were significantly higher in hALR treated rats than those without the treatment at various intervals. Stromelysin 1 gene expression levels in high dose hALR treatment group were significantly higher than that in low dose hALR treatment group. It suggested that recombinant human augmenter of liver regeneration may enhance stromelysin 1 gene expression in rats with fibrotic liver.

OBJECTIVE To study the aminoglycosides modifying enzyme genes and detect resistance of the Acinetobacter baumannii in burn unit.METHODS The susceptibility of the A.baumannii strains to 11 antibiotics were tested by K-B method.The aminoglycosides modifying enzyme genes were analyzed using polymerase chain reaction(PCR).RESULTS The resistance rate to antibacterials was as follows:to TZP 61.85%,SCF 23.69%,CAZ 64.48%,FEP 63.17%,IPM 63.17%,AK 56.58%,and to CIP 73.69%.In 76 strains of A.baumannii,48 strains(63.16%) were with aac(3)-Ⅰ,39(51.32%) with aac(6′)-Ⅰ,and 46(60.53%) with ant(3″)-Ⅰ,others were negative.The total test rate of aminoglycosides modifying enzyme gene was 63.16%.CONCLUSIONS There are not only multi-drug-resistance but also 63.16% aminoglycosides modifying enzyme genes of the A.baumannii isolated from burn unit.

AIM To explore effects of policosanol on depressing cholesterol in hyperlipidemia rats and the correlated biochemistry mechanism. METHODS The rats were randomly divided into normal control, policosanol 4 mg·kg~(-1) prevention, hyperlipidemia model, policosanol 4, 6 and 8 mg·kg~(-1) and lovastatin positive control groups. The later 5 group rats were fed with high-cholesterol diets for 4 weeks in order to make hyperlipidemia model and beginning from the 5th week, in addition to the normal control and model groups, other groups were ig given policosanol or lovastatin once a day for 6 weeks, respectively, and policosanol protection group rats were ig given with policosanol 4 mg·kg~(-1) once a day for 10 weeks, together with high-cholesterol diets everyday. Total cholesterol(TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C) and high density lipoprotein cholesterol (HDL-C) concentrations in the serum and fecal bile acid (FBA) in the exrement were determined by auto-biochemistry analyzer. The activity of 3-hydroxy-3-methyl-glutaryl coenzyme A (HMG-CoA) reductase in hepatocellular microsomes was detected by ultraviolet spectrophotometric analysis and activity of low density lipoprotein receptor (LDL-R) in peripheral blood lymphocyte was detected by fluorescence labelled integrator method. RESULTS Compared with hyperlipemia model group, the levels of TC decreased (39.1%-46.4%), LDL-C decreased (66.6%-80.7%), and FBA increased (9.7%-19.0%), the activity of HMG-CoA reductase decreased （13.8%-23.6%）, and activity of LDL-R increased (27.5%-129.6%) in policosanol prevention, policosanol 4, 6 and 8 mg·kg~(-1) and lovastatin groups, respectively; HDL-C increased （12.2%-16.7%） in policosanol prevention and policosanol 8 mg·kg~(-1) groups; TG decreased in lovastatin group. CONCLUSION Policosanol has significant effects on decreasing cholesterol. The decreasing cholesterol mechanism should include: ① increasing FBA excretion; ② decreasing the activity of HMG-CoA reductase; ③ increasing activity of LDL-R.

Background and purpose:New treatment strategies should be explored for non-small cell lung cancer (NSCLC) patients after the failure of the epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI). To compare the efficacy and toxicities of chemotherapy in combination with EGFR-TKI or single chemotherapy in advanced NSCLC patients with EGFR-TKI resistence. Methods:In this study, 18 patients were enrolled. Eight patients were treated by chemotherapy combined with EGFR-TKI (CE group);10 patients were treated by single chemotherapy (E group), 21 days for one cycle. All patients received at least 2 cycles of treatment. Results:All 18 patients had been evaluated. The CE group was similar to the E group in objective response rate (ORR:25%vs 10%, P=0.832). The CE group was higher than the E group in disease control rate (DCR:87.5%vs 30%, P=0.046). The median PFS was longer in CE group (3.5 months vs 2.4 months, P=0.05). The CE group was higher than the E group in rash (75%vs 10%, P<0.05). The grade 3-4 toxicities did not have significantly differences between the two groups (P>0.05). Conclusion:Though there was no significant difference in ORR between the 2 groups (P>0.05), the CE group was superior to the E group in DCR and PFS. Patients with retreatment of advanced NSCLC after the failure of EGFR-TKI can be controlled by continued EGFR-TKI and chemotherapy.

Objective To find out the changes of the soft tissue profile in Guangdong women with Angle's I teeth uncovered by lips after extraction of 4 first bicuspid teeth and to evaluate its significance. Methods Fifteen cases of adult Guangdong women with Angle's I teeth uncovered by lips were enrolled in this retrospective study. The X-ray film of lateral cephalometry was used to analyze the soft tissue profile in pre- and post- corrective tooth extraction. The paired t-test was statistically applied for comparison between the changes of lip tissue in pre- and post- correction. Results The changes occurred obviously in the angles of nose vs. lip and upper vs. lower lips, angle Z, and the length, thickness, esthetical plane distance and convex distance of upper and lower lips, but not in the angles of face and facial convex, basic angle of upper vs. lower lips and chin thickness. Conclusilons The facial dislocation and figure of these women have been positively improved after extraction of 4 first bicuspid teeth in spite of the larger thickness of lips than before correction, the just partly shortened distance between lips and the upper and front teeth still exposed and uncovered by lips to some extent. Further improvement depends on functional exercise of lip muscles.

OBJECTIVE:To investigate the perioperative use of antibiotics in patients undergoing colorectal operations. METHODS:The medical records of 213 patients undergoing colorectal operations in 2006 were randomly selected from the gastrointestinal surgery department of our hospital and divided into type Ⅰ operation group and type Ⅱ operation group accord-ing to patients’ operation time and wound contamination.The kinds and medication duration of antibiotics used before,during and after operation were investigated,and the postoperative infections were analyzed.RESULTS:The preoperative preventive medication were all conducted within the first 1～3days,and the dosage schemes were unified with aminoglycosides and metronidazole topping the list.The antibiotics used during operation were all in single dose,with 3rd generation cephalosporins combined metronidazole predominantly used.Postoperative use of antibiotics was somewhat complicated:type Ⅰ operation patients were treated more often by 2 kinds of antibiotics concurrently for 3～7days and type Ⅱ operation patients were treated more often by 3 kinds of antibiotics concurrently for at least 6～7days.The incidence of postoperative infection was 3.4% in type Ⅰ operation patients as compared to 11.6% in type Ⅱ operation patients,showing significant differences between two groups.CONCLUSION:The perioperative application of antibiotics in patients undergoing colorectal operation was reasonable on the whole,with 3rd generation cephalosporins plus metronidazole predominantly used,but there were some problems in the postoperative medication.