Objective To investigate the relationship between air pollution and the acute respiratory symptoms in children in Taiyuan,China.Methods A case-crossover design was used to study the association between air pollution and the acute respiratory symptoms of 254 children aged 7-11 in a school in 2005.Results The acute respiratory symptoms(cough,nose running,stuffy nose and angina)increased as the air concentration of PM10 increased.Conclusion There seems to be a positive association between air pollution of PM10 and the acute respiratory symptoms in children in Taiyuan.

Objective To investigate the effect of metronidazole and tinidaxole in breast milk on infants and their concentrations. Methods The concentration of metronidazole and tinidazole inbreast milk was assayed by high performance liquid chromatography(HPLC). Results The pharmacokineticparameters(mean?s) t max(h), t 1/2ke of Metronidazole(20 mg/kg, n=8 ) and Tinidazole (13 mg/kg,n=7) in lactation women infused with a single dose were(1.7?1.0)h、(20?5) mg/L and (1.3?0.6)h、(17?3) mg/L respectively. The total amount of metronidazole and tinidazole ingested by the infant via breast milk were 3.02 mg/kg/day and 2.58 mg/(kg?d) respectively. which were 1/5~1/10. and 1/6~1/8 of the routine therapeutic dose for infants.

Objective To investigate the application of combined detection of three serum markers,anti-cyclic citrullinated peptide antibody (anti-CCP),rheumatoid factor (RF),anti-keratin antibodies (AKA),for the diagnosis of rheumatoid arthritis.Methods This was a prospective study.Serum samples were randomly obtained from 137 RA patients,265 other autoinmmune diease patients,and 111 normal controls.All of the volunteers were outpatients or inpatients of Peking University Third Hospital from January 2011 to September 2013.Levels of AKA,anti-CCP antibody,RF were measured by indirect immunofluorescence,chemiluminescence,and immune turbidimetry,respectively.The values of 3 serum biomarkers and their varied combinations for RA diagnosis were systemically assessed.The results were compared using fourfold table chi-square (x2) test.Results When using one serum marker,anti-CCP had the highest accuracy (80.39％),Youden's index (YI) (0.51),and Kappa (κ) value (0.55) for the diagnosis of RA.While using three serum markers,anti-CCP + (AKA/RF),AKA /(anti-CCP + RF),anti-CCP/(AKA + RF) and (AKA + RF)/(anti-CCP + RF)/(AKA + anti-CCP) had the highest accuracy (80.94,80.94,80.66),YI (0.51,0.51,0.50),and κ value (0.55,0.56,0.54).Conclusion AntiCCP is the vital marker for RA diagnosis.Anti-CCP + (AKA/RF),AKA/(anti-CCP + RF),and (AKA +RF)/(anti-CCP + RF)/(AKA + anti-CCP) are the most ideal combinations for RA diagnosis.

Objective To improve scientific research capacity and disciplines development,we performed grading system to specialize and quantize the management in Beijing Obstetrics and Gynecology Hospital,Capital Medical University.Methods With assistance of forum survey related to 20 clinical and technical departments in hospital,we assessed the status of disciplines development,designed assessment criteria,and revised relevant regulations in grading system.Results The implementation of grading system promoted scientific achievements,academic communications and human resource development in hospital as relative to their pre-implemental controls.Conclusions The implementation of grading system facilitates scientific research and improves disciplines development.

OBJECTIVE To type the genes of plasmid DNA in 54 clinical Klebsiella pneumoniae isolates producing extended -spectrum beta-lactamases (SHV) by denaturing high-performance liquid chromatography (DHPLc) and evaluate their sensitivity and specificity, and explore a rapid and convenient method for detecting the antibiotic resistance of K. pneumoniae. METHODS Plasmid DNA from each extended-spectrum beta-lactamase (SHV) producing strain was subjected to PCR amplification. After we performed DNA sequencing of these amplicons and identification of mutation and their genotype, DHPLc was undertaken to investigate whether its results correlate the distinctive chromatogram with each genotype. RESULTS All the strains were found abnormal elution peaks (two or three peaks) which were different from each other. The result of DNA sequencing demonstrated that all the strains had DNA mutation in comparison with SHV-1. Moreover, DHPLc could produce specific peak patterns that correlate with genotype. CONCLUSIONS The sensitivity of DHPLc is 100% in this study. And each genotype is corresponded to specific peak pattern. So we can use DHPLc technique to type the genes of plasmid DNA in K. pneumoniae and detect mutations rapidly. DHPLc not only has high accuracy , but also is a convenient and rapid technique for the detection of mutation in the bacterial genome. It has a great potential clinical value.

Objective To construct a new molecular biological method for the analysis of microbial species in lower respiratory tract infections based on 16S rRNA gene by denaturing high-performance liquid chromatograph(DHPLC).Methods The universal primer set was analyzed basing on the highly conserved regions of 16S rRNA gene.DNA amplicons of lower respiratory tract were analyzed by DHPLC to generate peak profiles respectively.The incorporation of 40-bpGC clamp into the amplification primet was essential to effectively discriminate genetic differences identification.Results The primers could only amplify bacterial 16S rRNA.Bacterial of amplicons which incorporation of a 40-bpGC clamp were effectively discriminated genetic differences in DHPLC.The results of clinical isolares identification showed 100%according with the traditional method.Conclusion DHPLC has not only high accuracy,but also is a convenient,rapid and high-through technique for the discrimination bacteria.It has potential value in the detection of lower respiratory pathogenic bacteria.

OBJECTIVE To understand characteristics of TEM-116 ?-lactamases through comparative study on resistance to antibiotics of clinical isolates of Klebsiella pneumoniae producing TEM-116 ?-lactamases.METHODS K.pneumoniae susceptibility to ?-lactamases was determined by disk diffusion tests,and their isoelectric points(PI) were detected using analytic isoelectric focusing(IEF),and resistance to antibiotics of clinical isolates of K.pneumoniae producing TEM-116 and TEM-1?-lactamases was studied.RESULTS Both of K.pneumoniae producing TEM-116 ?-lactamases and producing TEM-1 ?-lactamases were 100% resistant to AMP,and highly resistant to the first and second generation cephalosporin,but greatly susceptible to FEP and IPM.There was greatly difference between resistance to AMC,TZP,AMK,and GEN of clinical isolates of K.pneumoniae producing TEM-116 ?-lactamases and that of K.pneumoniae producing TEM-116 ?-lactamases,the TEM-116 isolates were higher resistant than TEM-1 isolates.Analytic IEF results showed that PI of TEM-116 ?-lactamases was 5.4,and most strains of K.pneumoniae TEM-116 ?-lactamases displayed two electrophoresis bands or more,only one strain of them just displayed one band,resistant to majority of antibiotics.CONCLUSIONS The results show that K.pneumoniae producing TEM-116 ?-lactamases are more resistant to antibiotics than K.pneumoniae producing TEM-1 ?-lactamases,and indicate TEM-116 ?-lactamases work as ESBLs.

The association of the progress of diabetic nephropathy with the sclerosis of major artery was investigated.Carotid intima-media thickness (CIMT) was positively correlated with urinary albumin and creatinine ratio,and negatively correlated with glomerular filtration rate in diabetes group,suggesting that thickened CIMT may predict the increasing risk of clinical nephropathy in the patients with microalbuminuria.

Objective To develop the management system of science and technology awards through understanding dynamically the trend of awards in Beijing Obstetrics and Gynecology Hospital,Capital Medical University.Methods The data from the department of science and technology in Beijing Obstetrics and Gynecology Hospital,Capital Medical University were used to learn about some informations of science and technology awards including the winner's age,education,title and department,the proportion of rank and level,the trend of awards from 1998 to 2017,the number of social association awards from 2013 to 2017.Results The kinds of science and technology awards were up to 11.The 23 awards were obtained from 1998 to 2017,which were mainly composed of social association awards (65％) and gave priority to the second rank (48％).The age of the first winners were from 51 to 55 years.There were 9 departments obtained awards,accounting for 45％ of all the hospital clinical medical department.The increasing trend in the number of awards were observed from 1998 to 2017,and in nearly five years,the number showed the fast rising trend.Conclusions The less number of awards were obtained in Beijing Obstetrics and Gynecology Hospital,Capital Medical University.Whereas the most of awards were supported by social association.We were lack of the high rank and high level awards.The higher age showed that there were not enough youth scientific research and talent reserves.The situation need to be further strengthened the management and promoted the development in science and technology awards.

Objective Objective To find out the existed problems and suggest for possible countermeasures for the patents management through keep track of the trend of patents in Beijing Obstetrics and Gynecology Hospital,Capital Medical University.Methods The data of patents from the department of science and technology in Beijing Obstetrics and Gynecology Hospital,Capital Medical University during 2002-2017 were extracted,to analyze the number of application and grants of patents,type,the authorized inventors'department,project and funding.The method of the stage of technological development was used to deduce the development stage of the technology innovation ability.Results The number of patents application and grants was small in Beijing Obstetrics and Gynecology Hospital from 2002 to 2017.The wave-like increasing trend was observed in the number of patent application,while the stable change in the number of grants of patents.The Compound Annual Growth Rate of the number of application and grants of patents were 14.9％ and 8.2％,respectively.In terms of patent types,most patents (69.2 ％) were utility models patents.The proportion of service invention was 50％.The grants of patents were not affected by research funding.The technology innovation ability of patent is developing,and there will be a rising trend in the future.Conclusions The hospital should strengthen the patent management,improve the management of patent policy,cultivate full-time professional staff,strengthen the cooperation with the patent agency and enterprise,and the construction of patent conversion platform to promote development of patent quality.