To prepare monoclonal antibodies for blocking acute hemorrhagic conjunctivitis (AHC)viruses,BALB/C mice were immunized with Hela cells.The spleen of immunemouse was re-moved,and spleen cells were fused with SP2/0 cells.The antibodies against cell receptors wereselected by cell protection assay.Four cell strains secreted McAbs designated R7.R8.R16 andR24 were screened to be able to block cellular receptors and inhibit the infection of Ev70 as wellas CA24v on Hela cell.These results demonstrate that the receptors for Ev70 and CA24v are si-miliar.Indirect immunofluorescence test with the four McAbs showed definite fluorescence onliving Hela cells,which the intensity was concordance with the mean intensity resulted fromflowcytometer.Positive reaction on fixed Hela cells were only observed with R7 and R8.

Radiotherapy is one of the main treatment options for patients with advanced limited non small cell lung cancer.From the viewpoint of radiobiology,the change of fractionation schedule in radiotherapy might improve the therapeutic effect.There are many different methods of fractionated irradiation: from conventional radiation including hyperfractionated radiotherapy,accelerated radiotherapy and hypofractionated radiotherapy,etc.In this paper,we summarized the definition of the different types of fractionated irradiation, and its clinical application.

Objective To research the mobile medical units' portable equipment for Olympic safeguard service. Methods Relevant scientific literatures and combined the actual medical supporting tasks during the Olympic safeguard service were reviewed,and studied the portable equipments,instruments and medicines of the mobile medical units. Results Combined with the mobile medical units' actual characteristics,the principle was small size and efficient,multifunctional,simple and practical. The portable equipment was not only first-line treatment,but also taken into account advanced treatment,they can adapt to different environment and better coordination of the tasks to be performed. Conclusion Perfect portable equipment is very important way to enhance the whole capacity of mobile medical units for medical supporting in Olympic safeguard service.

Objective:To investigate the correlation between positive rate of thyroid autoantibodies in healthy people and thy -roid dysfunction.Methods:Fasting blood from 3218 healthy examined people in Cangzhou were collected and the serum was separa -ted.Automatic electrochemiluminescence immunoassay systems and reagents were used to determine the concentration of thyroid stimu -lating hormone(TSH),free triiodothyroninthyroid(FT3),free thyroxine(FT4),peroxidase antibody(TPOAb)and thyroglobulin antibody ( TgAb ) .TPOAb>34 U/ml and TgAb>115 U/ml was positives.Statistical analysis of test results .statistica analysis of test reults.Results:The positive rate of thyroid autoantibodies of tested population was 16.19%.The positive rates of TPOAb and TgAb were 14.57%,12.74%separately.The detection rate of TPOAb and TgAb was 11.12%in tested population.The positive rate of TPO-Ab and TgAb and TPOAb+TgAb were 6.92%,5.68%,5.03%separately in 1532 male subjects and were 21.53%,19.16 ,16.67%separately in 1686 female subjects,which were significantly higher in female group than that in male group (P<0.001).They gradually increased with age and reached a peak above 70 years old in female group and in 50-59 in male group.The positive rate and OR of thy-roid autoantibodies in hyperthyroidism and subclinical hyperthyroidism and in hypothyroidism and subclinical hypothyroidism and in hy -pothyroidism and subclinical hypothyroidism were statistically significant .Conclusion:The positive incidence of thyroid autoantibodies is higher in healthy people of Cangzhou .It is essential to follow-up these people of normal thyroid function with positive autoantibodies in order to facilitate prevention and early diagnosis and treatment of thyroid disease .

Objective:To establish a rapid method to detect drug-resistance genotypes of extended spectrum-β-Lactamases (ESBLs) produced by gram negative bacillus using the real -time fluorescence quantitative PCR. Methods: According to clinical common genotypes of ESBLs, SHV, TEM.CTX-M.OXA and their homology, 9 pairs of specific primers were designed including SHV, TEM, CTX-M-1, CTX-M-2, CTX-M-8, CTX-M-9, OXA-1, OXA-2 and OXA-10. To extract DNA template by boiling assay, and then establish and grade up SYBR GREEN I real-time fluorescence quantitative PCR reaction system, finally definite real-time fluorescence quantitative PCR method. Its precision and range of linearity were tested. With established assay 51 multi- drug resistant ESBLs- E. coli K. pneumoniae were detected and compared with improved three dimensional extract tests. Results: Except OXA-2, 8 genotypes SHV, TEM, CTX-M-1, CTX-M-2, CTX-M-8, CTX-M-9, OXA-1 and OXA-10 were amplified by quantitative PCR from 39 ESBLs+ and 51 multi-drug resistant ESBLs-E. coli K. pneumoniae and confirmed by sequence testing. The range of linearity was 3×10~3-3×10~8 copies/mL, r =-0.994 7. Repetitive experiments showed that the average coefficient of variation between -runs was 9.6%. Comparing with three dimensional extract test, there was no significant difference (χ2 = 1.125,P> 0.05). Conclusion: Testing drug-resistance genotypes of ESBLs with SYBR GREEN I real-time fluorescence quantitative PCR is a rapid,specific and sensitive method, which is capable of inspecting genotypes of ESBLs from clinical strains.

Objective To investigate the current situation of community health service requirements and health-seeking behaviors of the elderly in Yuzhong District of Chongqing City and analyse its mainly influencing factors,in order to provide references for further promoting hierarchical medical pattern.Methods A total of 410 elderly persons aged 60 year old or older treated in four community health service centers in Yuzhong district of Chongqing city in June 2015 were recruited by using multi-stage random sampling technique.The basic information about demography,cognitions and requirements of community health service,cost of health service and health-seeking behaviors were surveyed via questionnaire,and were analysed.Results A total of 402 effective questionnaires were returned,and the effective response rate was 98.05％.There were 76.37％ of elderly persons firstly selected community health service centers for disease treatment.The main factors affected health-seeking behaviors of the elderly were suffering from the coronary heart disease,the waiting time in community health service centers,the medical costs per month,facilities and environment of the community health service centers and whether to pay for health insurance.Conclusion Community health centers should make full use of their own advantages and convenience.It is necessary to provide characteristic services for the corresponding elderly patients,and increase the public health input.All of these are intended to raise the synthesized level of diagnosis and treatment in community health service centers,and change health-seeking behaviors of elderly patients fundamentally.

Objective To investigate the causes of an outbreak of healthcare-associated infection with methicillin-resist-ant Staphylococcus aureus (MRSA)in a neurosurgical intensive care unit(NSICU).Methods Epidemiological investigation on 8 patients with lower respiratory tract infection (LRTI)in a NSICU between June 15 and June 28,2104 were performed by combination methods of prospective and retrospective survey.Results The attack rate of MRSA LRTI in NSICU patients was 22.86%,a total of 16 MRSA isolates were detected from patients’clinical specimens,nasal vestibule,as well as hospital surroundings during the period,pulsed-field gel electrophoresis (PFGE)result revealed that infection outbreak was caused by two subtypes of MRSA;risk factors analysis showed that long length of stay in ICU and aspiration of spu-tum through bronchoscopy were risk factors for MRSA LRTI.Conclusion Contamination of bronchoscope was the key factor for this epidemic spread of healthcare-associated MRSA infection.

Objective With the isocentric C-arm (Iso-C) three-dimensional computerized navigation system,cadaveric pelvic specimens were used to imitate double screw fixation of the symphysis pubic.Practicability and safety of the screw trajectory were examined postoperatively by local cadaveric dissections and imaging tests.Methods Pelvic specimens were harvested from 8 male and 7 female adult cadavers.Double screw placement in symphysis pubic was performed using the Iso-C three-dimensional navigation and entry point and safety trajectory was achieved.With the detailed local dissection postoperatively,distances from screw entry and exit points to unilateral structures (spermatic cord,femoral artery and vein,femoral nerve,obturator artery and vein,obtrurator nerve,and so on) were measured respectively.After complete removal of surrounding soft tissues of the specimen with only bony structure kept,the entry angle and length were calculated.Accuracy of double screw fixation of symphysis pubic was further checked using X-ray and CT.Results Entry point of the first screw was at the junction of unilateral pubic tubercle and transitional site of superior pubic ramus.Mean angle of the first screw with the horizontal plane was (7.7 ± 1.9) ° in men and (8.1 ± 1.7) ° in women.Mean angle between the first screw and coronal plane was (7.8 ± 1.8)° in men and (7.7 ±2.0)° in women.Entry point of the second screw was in the same place in the contralateral pubic tubercle.Mean angle between the second screw and horizontal plane was (30.6 ± 4.0) ° in men and (30.8 ± 3.4) ° in women.Mean angle between the second screw and coronal plane was (9.1 ± 3.0)°in men and (9.2 ± 3.3)°in women.Conclusions With the three-dimensional computerized navigation system,the bony channels of double screws implanted in the symphysis pubic are achieved and reliable.Percutaneous double screw fixation is feasible to treat the pubic symphysis diastasis.

Objective To investigate the clinical significance of D-dimer in systemic lupus erythematosus (SLE). Methods The study group comprised 261 SLE patients who were admitted in ward from 2005 to 2008 in Peking University People's Hospital Collect the clinical data to investigate the clinical significance of D-dimer. Results ( 1 ) The D-dimer levels of 56 patients were increased due to coexist reduced renal function, infections, disseminated intravascular coagulation ( DIC), liver disorders, pregnancy and injury. With the exception of above patients, 142 ( 69. 3 ) patients were increased in total 205 patients. (2)The level of D-dimer was positively correlated with SLE disease activity index( SLEDAI ) score ( r =0. 598,P =0. 000), and was associated with anti-dsDNA antibody, ESR, C-reactive protein(CRP) and complement C3 and C4. (3)D-dimer level was associated with important organ involvement. (4)All patients with thrombosis had increased D-dimer, but patients without thrombosis had normal or increased D-dimer levels. Conclusion The level of D-dimer elevates in patients with active disease or important organ involvement , it can not identify thrombosis. All patients with thrombosis had increased D-dimer levels.

Objective To screen and isolate the radioresistance related genes of IRM-2 mice.Methods cDNA library of IRM-2 mice was constructed by SMART technique.Total RNA was isolated from spleens of IRM-2 male mice.The first-strand cDNA was synthesized by using PowerScript reverse transeriptase,and double-strand cDNA was synthesized and amplified by long PCR.The PCR products were purified,digested with restriction enzyme Sfi I.The ds-cDNA fragment lessthan 500 bp was fractionated and ligated to the Sfi I-digested pDNR-LIB vector.The ligation mixture was transformed into E.coil DH5α by electroporution transformation to generate the unamplified cDNA library.The quality of cDNA library was identified by PCR technique.130 clones from cDNA library were sequenced and compared with GenBank database.Results The cDNA library contained 2.25 x 106 independent clones with an average insert size of 1.2 kb.The ratio of recombination and full-length was 95% and 55%,respectively.21 pieces of EST sequences from cDNA library were not the same as the known mice genes and registered into GenBank EST database,with registered number DW474856-DW474876.Conclusions cDNA library of IRM-2 mice has been constructed successfully.21 pieces of EST implies that radioresistance correlative genes may be in IRM-2 mice,which will lay a foundation for isolating and identifying radioresistance related genes in further study.