Objective To investigate the cardio-protective effects of fructose-1,6-diphosphate on myocardium during coronary artery bypass graft.Methods A total of 30 patients were treated with coronary artery bypass graft(CABG) and divided into group A(treated group) and group B(control group) randomly.Each group included 15 patients.In the treated group,patients were treated with FDP three days before CABG and treated with FDP before cardiopulmonary bypass(CPB).FDP was replaced by 0.154mol/L NaCl of the same volume in control group.Blood samples were collected from all patients after induction and at 1h,4h,24h and 48h after aortic declamping to measure the serum concentration of cTnI,CK-MB,SOD and MDA.Results The levels of CK-MB and cTnI at 1h,4h,24h and MDA at 1h,4h after reperfusion were significantly lower in the treated group than those in the control group(P

OBJECTIVE To develop the strong and the specific multi-epitope antigen for the exploiting diagnosis of Treponema pallidum.METHODS The immuno-dominant epitopes of Tp0453 and Tp17 were amplified by PCR respectively,and subcloned into the expression vector pQE32 to generate multi-epitopes recombinant plasmid pQE32/Tp0453-17.The recombinant protein was expressed in Escherichia coli M15.The immunoresponse of recombinant fusion protein was analyzed by Western blot.RESULTS The multi-epitopes recombinant plasmid was successfully constructed,enzyme digestion analysis and sequencing showed that the inserted target genes were Tp0453 and Tp17 gene,compared with the gene reported by GenBank,it had 100% similarity;SDS-PAGE analysis showed the recombinant plasmid could be expressed in M15,its relatively molecular mass(Mr) of expressed product was about 52.0?103.The Western blot result showed the recombinant protein could be recognized by anti-T.pallidum positive serum.CONCLUSIONS The expressed multi-epitopes recombinant antigen showed excellent immunoresponse.The results lay the foundation for research on development of quick diagnostic kit applying to detection of T.pallidum infection.

Objective To evaluate the value of a Treponema pallidum (TP) recombinant protein TP0993 in the serodiagnosis of syphilis.Methods A bioinformatics method was used to obtain the sequence of TP0993 gene.The open reading frame (ORF) without upstream non-coding region of TP0993 gene was ligated into the expression vector PET-28a (+),which was then transformed into Escherichia coli Rosetta.Isopropyl-β-d-thiogalactoside (IPTG) was used to induce the expression of TP0993 protein.The expressed protein was purified with nickel-nitrilotriacetic acid (Ni-NTA) affinity chromatography.Western blot was performed to evaluate the immunoantigenicity of the protein.New Zealand rabbits were immunized with the recombinant protein for immunogenicity evaluation.Indirect enzyme linked immunosorbent assay (ELISA) was developed by using the purified recombinant protein to coat microwell plates.Anti-TP antibodies were detected by the established ELISA and TP particle agglutination assay (TPPA) in 480 clinical serum samples.Results The prokaryotic expression vector PET-28a (+)-0993 was successfully built,and a fusion protein with a relative molecular weight of about 34 000 Da was attained after IPTG-induced expression and purification.Western blot proved that the recombinant protein could specifically react with clinical sera positive for anti-TP IgG antibodies.Specific humoral response was elicited in New Zealand rabbits by the recombinant protein.Compared with TPPA,the established indirect ELISA showed a sensitivity of 88.3％ and a specificity of 85.8％.There was a consistency of 86.5％ between the indirect ELISA and TPPA.Conclusion The expressed recombinant protein showed favorable immunocompetence,and may serve as a candidate antigen for serodiagnosis of syphilis.

Objective To observe the effect of fetus distress treated with hyperoxin liquid and to provide evidence for this treatment.Methods A total of 70 lying-in women with fetus distress during cesarean section were randomly divided into two groups: treatment group was given infusion of hyperoxin liquid by vein and control group was given 50g/L glucose.The blood gas was analyzed in the two groups,and the SOD and MAD of fetus ambilical blood were also tested.The blood gas analysis and the Apgar scoring of neonates were carried out.Results The PaO2 in pregnant and lying-in women and SOD,PO2,SaO2,HCO-3 and BE of fetuses in treatment group were obviously higher than those in control group.The MDA and PCO2 were significantly lower than those in control group.The Apgar score in treatment group was better than that in control group.Conclusion Hyperoxin liquid can improve the anoxia status of fetus distress and save time for further clinical treatment.

OBJECTIVE To evaluate the spectrum of imipenem-resistant Pseudomnas aeruginosa and the production of metallo-?-lactamase.METHODS The clinical strains of P.aeruginosa were collected from Jan to Dec 2007.The results of antimicrobial susceptibility tests and detection of metallo-?-lactamase were analyzed.Antimicrobial susceptibility tests were performed by K-B methods;the production of metallo-?-lactamase was tested by CAZ-EDTA synergy method.RESULTS Sixty strains were isolated,imipenem-sensitive and resistant strains were 40(66.7%) and 20(33.3%),respectively,and 7 strains with metallo-?-lactamase were detected.Among imipenem-resistant strains,at least 90.0% strains were resistant to meropenem,gentamicin,tobramycin,ciprofloxacin and SMZ-TMP;at least 80.0% strains were resistant to piperacillin and piperacillin/tazobactam;50.0% strains were resistant to ceftazidime and cefepime;polymyxin E was less resistant than others.Twenty strains were resistant to at least 3 antimicrobial agents,which was obviously higher than 27.5% of imipenem-resistant strains.CONCLUSIONS The resistance rate of imipenem-resistant P.aeruginosa is higher than imipenem-sensitive ones.The production of metallo-?-lactamase is one of the mechanisms of P.aeruginosa resistance to imipenem and shou1d be detected carefully,which could help us medicate reasonably in clinic and avoid using medicine which could induce and strengthen the resistance.

Objective To express Tp0751 laminin-binding adhesion of Treponema pallidum (T. pallidum) ,and assess the immunocompetence. Methods The Tp0751 ORF without upstream non-cod-ing region was ligated into the expression vector pET-28a( + ), and expressed in E. coli R2566. Its immuno-gen was analyzed by Western blot and ELISA. Results A fusion protein with molecular weight about 26×103 was attained after expression and purification. Western blot proved that the recombinant protein can specifically react with T. palliclum IgG positive sera. Specific humoral response were elicited after introducing recombinant protein in Zealand rabbit and the specific antibody titer was above 1:10 2400 detected by indi-rect ELISA. Conclusion The expressed recombinant protein showed excellent immunoeompetence, and the results lay the foundation for the research on its function to T. paUidum infection.

OBJECTIVE: The aim of this study is to investigate the incidence and natural history of secretory otitis media(SOM) and hearing loss in newborns and infants with cleft palate, consequently, define its audiological criteria and to predict SOM early. METHOD: Seventy-three newborns and infants with a cleft palate (146 ears) were monthly estimated by tympanogram, static compliance, acoustic stapedius reflex and auditory brainstem response (ABR) under natural sleep within one year of age. RESULT: Au the infants with cleft palate had the suspected SOM in the first 6 months of life. Among children with cleft palate, the suspected SOM were most prevalent in the 3-month-age. 78. 8% infants with cleft palate had the confirmed SOM in the first 12 months of life. SOM were most prevalent in the 6-month-age. The SOM prodromal period was averagely 3. 8 months from suspected SOM to confirmed SOM. 56. 2% infants with cleft palate had a conductive hearing loss in the first 12 months of life. The conduction hearing thresholds of ABR (2-4 Hz) were averagely 48. 6 dBnHL. CONCLUSION The highest incidence of SOM and hearing loss in children with cleft palate appear in infants in the first 1 year of life. The process of SOM and hearing loss onset is progressive process. The infants with cleft palate should be estimated by ABR and acoustic immittance audiometry in each period of 2 or 3 months after birth.
Cleft Palate ; complications ; Female ; Hearing Loss ; epidemiology ; etiology ; Humans ; Incidence ; Infant ; Infant, Newborn ; Male ; Otitis Media with Effusion ; epidemiology ; etiology