Objective:To obtain the antigen of recombinant vacuolating segment of Helicobacter pylori vacuolating cytotoxing by gene-engineering.Methods:The objective gene was cloned into PQE-30,sequenced and expressed using PCR and recombinant techniques.After expression,the antigenicity of recombinant protein was analyzed by Western blotting.Results:DNA sequence analysis identified that the sequence was integrated.Compared with standard strain AF361700,1.5% of the cloned gene was mutated,one amino acid radicle was changed.SDS-PAGE revealed the molecular weight of objective recombinant protein was 27 000 as it was predicted;the level of expression product was over 30%.Western blotting results showed the objective protein could be recognized by anti-serum against HP.Conclusion:This recombinant protein has perfect antigenicity,so it may be used as a protective antigen in preventing HP infection.

Objective To investigate the correlation between anatomical structure and recurrence of common bile duct stones.Methods The clinical data of 195 patients with common bile duct stones were studied,including 37 patients with recurrent bile duct stones.The correlation between anatomical structure and the recurrence of common bile duct stones were analyzed by univariate and multivariate analysis.Results Univariate analysis revealed that history of cholecystectomy,choledocholithotomy,periampullar diverticu-lum,papilla hypertrophy or stenosis,intramural duodenal bile duct abnormalities,common bile duct stric-ture,choledochectasia and angulated common bile dust were risk factors of recurrence.Multivariate logistic regression analysis showed that past history of cholecystectomy,periampullary diverticulum,angulated com-mon bile dust,choledochectasia were independent risk factors for the recurrence of common bile duct stones. Conclusion Patients with anatomical structure of past cholecystectom,periampullary diverticulum,choledo-chectasia,angulated common bile dust are prone to recurrence of common bile duct stones.

Suppression subtractive hybridization(SSH),which is feasible and highly specific,is one of the most efficient methods for cloning differentially expressed genes.It has been successfully applied in the study of tumors,stem cells,etc.

Objective To explore the influence of cerebral hemorrhage stress on endothelial progenitor cells(EPCs) proliferation and senescence. Methods Mononuclear cells from peripheral blood of patients with cerebral hemorrhage (CH group) and patients with the same underling diseases (control group) as the front were isolated and induced to EPCs. Proliferation, numbers of colonies and cells, senescence of EPCs were checked and compared between the two groups. Results Compared with control group, proliferation (0.270 ± 0. 074 vs 0. 185 ±0.050, t=3.802) ,numbers of colonies( (5. l0 ±0.79) cell/HPF vs ( 1.90 ±0.41 ) cell/HPF, t= 14.407) and cells( (75.15 ± 10.48) cell/HPF vs(57.10 ± 9.28 ) cell/HPF, t = 5. 157 ) of EPCs in CH group on the stress of cerebral hemorrhage were increased significantly (P ＜ 0.01 ), but senescence of EPCs ( (45.54 ± 5.74 ) cells/100 cells vs ( 46.86 ± 5.06 ) cells/100 cells, t = 0. 686 ) in two groups were not different (P ＞ 0.05 ). Conclusion Cerebral hemorrhage stress can increase proliferation of EPCs,but can not change the senescence destiny of EPCs.

In present study, the injury induced by oxygen free radical in cultured cardiac cells was observed by adding xanthine and xanthine oxidase into the medium The effects of zinc on the injury of cells were also observed, taking the electro physiological changes and threshold concentration of BaCl_2 which induces cell stop beating as index. The results showed that the electric parameters of action potential (the amplitude, overshoot, maximum diastolic potential, threshold, maximum rate of depolarization and duration of action potential ) were decreased in XOD group, compared with the control. The threshold concentration of BaCl_2 was decreased too. However, there were no significant differences between Zn group and control group except the TP value. The electric parameters of action potential was increased notab(?)y in Zn group, compared with XOD group. Furthermore, the threshold concentration of BaCl_2 in Zn group was increased too. It is suggested that Zn possessed the protective effects on cultured cardiac cells from the injury induced by oxygen free radical.

The fracture of the axis arch is a rare uppercervical vertebrae fracture. It is easy to misdiag-nose. From 1971 to 1989, 7 cases of the fracturewere admitted to our hospital. Diagnoses were con-firmed by injury history, clinical features and X-ray films. The treatment results were as follows:six patients were in excellent condition and one pa-tient was in good one. The three following prob-lems were discussed: ①The mechanism of injury.②The misdiagnosis causes and its preventivemethods. ③Most patients can be treated conserva-tively and can be up. Only a few Type III fractureswill require operation after the failure of non-oper-ative treatment or at the time of conplicated injuryof the spinal cord occurring lately.

The 4 brands of subject librarian service in Tianjin University of Traditional Chinese Medicine in the past 10 year were summarized ( namely the mass organization of students, cooperation between universities and en-terprises, micro and new technology service, and innovative service) , and the subject librarians-faced challenges at present and in the future were elaborated, with suggestions proposed for improving their information literacy.

OBJECTIVE:To provide optimal therapeutic scheme for patients with acne vulgaris. METHODS: By a single-blind randomized controlled method,a total of 122 patients with acne vulgaris were assigned to one of the following 3 groups: tazarotene cream group(n=42),Water chlorine tincture group(n=38) and combined treatment group(n=42). The curative efficacy was observed after treatment for 8 consecutive weeks. RESULTS: The number of skin lesions in all the 3 groups reduced as the course of treatment increased,and there were significant differences across the 3 groups after 8-week treatment as compared with before treatment (P0.05). CONCLUSION: Tazarotene cream is effective for non-inflammatory acne. The superior efficacy of water chlorine tincture as compared with tazarotene for patients with impetigo might be related to the antibacterial action of chloramphenicol. Tazarotene cream combined with local application of 0.5% water chlorine tincture is effective for inflammatory acne.

OBJECTIVE:To establish a HPLC procedure to determine diclofenac sodium in human plasma.METHODS:The plasma sample was deproteinized by adding acetonitrile,A Hypersil-BDS(250?4.6mm,5?m)column with a mobile phase consisting of methanol-water-10%phosphate acid(60∶40∶1)was used,the detecting wavelength was276nm,column tem?perature was35℃.RESULTS:The linear range was20.50～2050.0ng/ml(r=0.9998,n=5),the detective limit was10ng/ml.The recovery was99.47%～105.4%with the within-day RSD from3.77%to5.81%(n=5),and the between-day RSD from4.93to8.96%(n=5)at three different concentrations.CONCLUSION:The method is simple,rapid and suitable for the pharmacokinetic study of diclofenac sodium.

Objective To investigate the clinical significance of the changes of hypersensitive C-reactive protein (hs-CRP) and myocardial enzyme spectrum,cardiac troponin Ⅰ (cTn Ⅰ) in patients with Henoch-Schnlein purpura.Methods 100 patients with Henoch-Schnlein purpura were selected.50 patients only skin involved were selected as the simple group,50 patients accompanied by other organs involved were selected as mixed group.50 healthy people in the same period were selected as the control group.The serum hs-CRP,myocardial enzyme spectrum and cTn Ⅰ were tested and compared.Results The hs-CRP,serum myocardial enzyme spectrum and cTn Ⅰ levels of mixed and simple group were significantly higher than the control group(all P ＜ 0.05) ; Serum CK-MB,cTn Ⅰ and hs-CRP levels of the mixed group were significantly higher than those of simple group (all P ＜ 0.05).The abnormalities number of CK-MB and cTn Ⅰ respectively accounted for 33％ (33/100) and 32％ (32/100) ;The constituent ratio of the number of abnormal serum CK-MB and cTn Ⅰ of the mixed group was significantly higher than the simple group (x2 =4.047,3.908,all P ＜ 0.05) ;The Pearson correlation analysis showed that the relationship between the serum hs-CRP and CK-MB,cTn Ⅰ levels was linear,which were positively correlated (r =0.872,0.801,all P ＜ 0.05).Conclusion Patients with allergic purpura should early detect the serum levels of hs-CRP,myocardial enzyme spectrum and cTn Ⅰ,and treat the myocardial injury in time.