Manganese-oxidizing microorganisms are able to oxidize soluble Mn(II) into insoluble Mn oxides. Such microorganisms are very useful in treatment of Mn-contaminated water. In this research, a Mn(II)- oxidizing bacterium Bacillus sp. MK3-1 was isolated from Mn-contaminated soil. This bacterium has high MnCl2 resistance with a MIC of 20 mmol/L. The results showed that it is able to oxidize and remove more than 96% of Mn(II) in the culture medium. The immobilized solid-embedding Bacillus sp. MK3-1can re- moved 87.12% of manganese contaminated water. The final concentration of MnCl2 after the treatment reached the national discharge standard level. Scan electron microscope observation showed that the pro- duced Mn oxides located on the cell surfaces of Bacillus sp. MK3-1. Energy dispersive spectrdmeter analy- sis indicated that the content of manganese of cell surfaces of Bacillus sp. MK3-1 was 19.60% (W/W). At last we amplified a 903 bp multicopper oxidase gene mnxG encoding the putative Mn(II)-oxidizing protein.The product of mnxG showed 86% identity to the reported multicopper oxidase.

Objective To analyze Mycoplasma detection and drug sensitivity test of 3 127 urogenital tract infection women ,and to provides important basis for clinical diagnosis and treatment .Methods Mycoplasma detection and drug sensitivity of 3 127 uro-genital tract infection women were detected .Results Among 3 127 cases ,1 800 patients were detected Mycoplasma ,and the posi-tivity was 57 .6% .The infection rates of Ureaplasma urealyticum(Uu) ,Mycoplasma hominis(Mh) and Uu+ Mh mixed infection were 46 .2% ,1 .2% ,10 .1% .Uu was sensitive to minocycline ,doxycycline and clarithromycin .Mh was sensitive to minocycline , doxycycline and josamycin .Uu+ Mh mixed infection was sensitive to minocycline ,doxycycline and josamycin .Conclusion Myco-p lasma infections have been the major pathogen of urogenital tract diseases ,the clinical treatment should be based on drug sensitivity test .

Objective To investigate the knowledge and attitude of nurses on prevention and intervention of common complications among bedridden patients in Chinese hospitals and to explore the influential factors.Methods It was a cross-sectional study.A total of 3 903 nurses from 6 tertiary hospitals,11 secondary hospitals and 8 primary hospitals from 6 provinces and cities were recruited by convenience sampling and surveyed using selfdesigned questionnaires.Results Nurses' average scoring rate of knowledge and attitude were 73.46％ and 85.02％.Level of hospitals,whether in ICU or not,age,working time,educational background,job title,position,employment form were influential factors for nurses' knowledge (P＜0.05).Meanwhile,level of hospitals,educational background,position,employment form were influential factors for nurses' attitude (P＜0.05).Conclusion Nurses took a positive attitude for prevention and intervention of common complications among bedridden patients,while the level of nurses' knowledge should be improved.

Objective To construct an evaluation index system of ward management,which can evaluate the efficiency of ward management fairly, and make the ward management more scientific and standardized.Methods Delphi method was used in semi-structured interview of 31 experts and 74 experts were subject to questionnaire consultation, so as to establish the index system.Results The index system of ward management so built consisted of three level-1 indexes of safety and quality, teamwork and patient satisfaction, six level-2 indexes of daily monitoring, service environment, adverse events, doctor-nurse cooperation, evaluation of administrators and patient satisfaction, and 25 level-3 indexes.Practice of this system in the past two years reduced adverse events and elevated quality of care.Conclusions This system as used clinically proves its operability and objectivity.

We designed and applied the electronic data capture system (EDC) in order to strengthen the re-search quality and improve the efficiency of data collection of multi-center nursing research. According to the needs of research,we reasonably designed the EDC structure and functions,including data collection,verification, summary and export. Further improvement was performed after EDC was inputted into using. By using EDC,resear-chers from sub-centers completed the data collection smoothly,and the data quality met with research requirements. The design and application of EDC could effectively guarantee the data quality and improve the research efficiency.

Quality management of scientific research is a systematic work,quality control of multicenter nursing research depends on perfect and effective quality management system,measures and procedures,as well as rigorous scientific attitude in project team. To establish and improve quality management system of scientific research,to for-mulate standard quality control procedures,to promote the usage of electronic data acquisition system in multicenter nursing researches,and to improve scientific,standard,and refined quality management of research are effective mea-sures to guarantee quality control of multicenter nursing research. This paper summarized quality control methods for multicenter investigation,to provide more experience for nursing researchers as references.

[Summary] In this study, PubMed, Embase, China National Knowledge Infrastructure, databases VIP Chinese Periodical Database, and Wanfang Chinese Periodical Database were systematically searched for the case-control study related β3-adrenergic receptor ( ADRB3 ) Trp64Arg gene polymorphism to overweight/obesity among children from 1962 to 2014.Twelve eligible studies with 2 222 overweight/obese children and 1 955 normal children were included according the uniform inclusion and exclusion criteria.Meta-analyses showed that Trp64Arg polymorphism was associated with significantly increased overweight/obesity risk in Arg carriers among children( OR=1.34,95%CI1.17-1.53).Afterstratificationforethnicity,highlysignificantcoorelationofTrp64Argpolymorphism to overweight/obesity in Asian children(OR=1.44, 95%CI 1.23-1.68) but not significant in Europe(OR=1.05, 95%CI 0.79-1.40).It suggested that Trp64Arg polymorphism is associated with overweight/obesity susceptibility in children.Our results support an strong association between Trp64Arg polymorphism and overweight/obesity among the Asian children investigated.

To study the effect of essential MCU regulator (EMRE) on myocardial ischemia injury in experimental mice with underlining mechanism. Methods: Myocardial EMRE expression was up-regulated by EMRE adenovirus (Ad-EMRE) injection in mice myocardium tissue. Our research included in 3 groups: Sham operation group, sham mice received myocardium injection of eGFP adenovirus (Ad-eGFP); Myocardial infarction (MI) control group, the mice received Ad-eGFP injection and 48 hours later had coronary LAD ligation to establish MI model; MI treatment group, MI mice received Ad-EMRE injection. All animals were treated in 3 weeks. Mice cardiac function was examined by ultrasound; cardiomyocyte hypertrophy was evaluated by wheat germ agglutinin (WGA) staining, collagen fibrosis was measured by Masson staining, cell apoptosis was determined by TUNEL assay, protein expressions of EMRE, caspase-3 and caspase-9 were detected by Western blot analysis and mitochondrial reactive oxygen species (ROS) was assayed by MitoSOX fluorescence probe. Results: Compared with MI control group, MI treatment group showed the worse cardiac function, aggravated cardiac hypertrophy and elevated collagen fibrosis; in addition, MI treatment group had obviously increased cardiomyocyte apoptosis and increased protein expressions of Caspase-3, Caspase-9 and more mitochondrial ROS production. Conclusion: Over expressed EMRE can increase mitochondrial ROS production, induce cardiomyocyte apoptosis and therefore, aggravate myocardial ischemia injury in experimental mice.

Although current synthetic anti-gout drugs have significant therapeutic effects in reducing serum uric acid levels, they have serious side effects such as allergic reactions and liver and kidney damage. Natural products with a wide range of uric acid-lowering and high safety have played a critical role in anti-gout drug discovery and development. This paper reviews the natural products with uric acid-lowering or anti-gout pharmacological effects and the investigation on their mechanisms of action, to provide information for drug discovery and development.

Objective To evaluate the effect of two polymorphisms(rs761737 and rs2269058) of RNF8 and the interactions with cigarette smoking and alcohol consumption on sperm DNA fragment index (DFI)and primary male infertility .Methods Based on case-control design ,polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technology was used to de-tect the genotype of rs761737 and rs2269058 in RNF8 between 332 primary male infertile patients (composed by 87 patients of azoospermia ,166 patients of oligoasthenozoospermia and 79 patients of normozoospermia ) and 329 controls ,and Sperm Chromatin Dispersion(SCD) assay was used to assess sperm DNA fragment index (DFI) .Results Genotype and allele frequencies distribution of rs761737 and rs2269058 between cases and controls had no statistically significant difference (P>0 .05) .Sperm DFI in infertile group (46 .2 ± 22 .3)% was significantly higher than that of control group (21 .4 ± 9 .2)% (P<0 .05) ,stratified analysis suggested that Sperm DFI in oligoasthenozoospermia group (50 .0 ± 22 .1)% was also significantly higher than that of normozoospermia group (38 .2 ± 20 .7)% .The statistic differences of Sperm DFI in individuals who carried different genotypes of rs 761737 and rs2269058 in oligoasthenozoospermia group and normozoospermia group had no statistically significant difference (P>0 .05) .There was an inter-action between RNF8 rs2269058 and Cigarettes smoking(P<0 .05 ,OR=2 .37 ,95% CI 1 .06-5 .27) .Conclusion Although RNF8 rs761737 and rs2269058 have no effects on primary male infertility and sperm DFI ,cigarettes smoking increase the risk of primary male infertility in individuals who carry RNF8 rs2269058 AC+AA genotype .Sperm DFI is an important test to assess sperm quali-ty ,it is vital to reveal the etiology of primary male infertility and provide therapy guidance to clinicians .