1.The effect of modified early warning scores on nosocomial emergency transshipment in primary hospital
Yanjun ZHANG ; Xiaojiang WU ; Caihua ZHAO ; Xiaoyun LOU ; Lingling WANG
Chinese Journal of Primary Medicine and Pharmacy 2015;(22):3445-3447
Objective To investigate the effect of modified early warning scores (MEWS)on nosocomial emergency transshipment in primary hospital.Methods From July 2013 to February 2014,192 patients were selected as control group,and from March 2014 to October 2014,192 patients were selected as observation group.The control group conducted assessment and transshipment by experience.The observation group adopted MEWS to evaluate dis-ease and applied targeted treatment.Then,we compared the incidence of unsafe events,accuracy of handover,family member and the related departments 'satisfaction.Results After the implementation of MEWS,the incidence of unsafe events was decreased from 13.0% to 5.2%(χ2 =5.121 ).The accuracy of handover was increased from 85.4% to 94.3% (χ2 =8.248).The family member and related departments 'satisfaction were improved from 89.1%,87.5% to 97.4% and 96.4%,respectively (χ2 =15.561,χ2 =10.141).The differences were statistically significant (P <0.05).Conclusion MEWS can evaluate and classify the safety of patients objectively and effective-ly during nosocomial emergency transshipment.MWES can effectively reduce the incidence of unsafe events,increase the accuracy of handover,improve family member and related departments'satisfaction.
2.A new species of Paragonimus sheni--with a key to the species adult worm and metaceycariae of the genus Paragonimus in China
Xiaoyun SHAN ; Chenxin LIN ; Yousong LI ; Ye HU ; Xiuosheng SHEN ; Hougqiang LOU
Chinese Journal of Zoonoses 2009;(12):1143-1148
This paper gives a report on a new species of paragonimus in MT.Wuyishan,Fujian province during 1978 to 1983.All the type are deposited in the Center for Disease Control and Prevention of Fujian province.Holotype body short-oval,12.5 by 7.0mm,ratio of width to length 1:1.79.Ovary 2.0×2.13mm in size,the third class branches.Testes big,2.5 by 3.75mm(left) and 2.0 by 4.75mm(right)in size,as piece-shapy,only 2 litter branches,being much larger than the ovary.cuticular spines slender,sing in arrangement.Matacercaria obtained from the fresh-water crab,Sinopotamon fujianensis Dai et Chen,1979,measuring 395 by 410 micra,its cyst wall sing ,only 3-5 micra.Basing on the characteristic features mentioned above,This worm found by us differs fromP.westermani,P.skrijabini,P.macrorchis,P.mingqingensis and Euparagonimus cenopiosus,and can be considered as a new species of Paragonimus.
3.Analysis and identification of B cell epitopes of the OMP18 from Campy lobacter jejuni
Hongqiang LOU ; Ye HU ; Lan WANG ; Xiaoyun SHAN ; Xiusheng SHENG ; Suhua GAO
Chinese Journal of Zoonoses 2014;(7):739-742
In this study ,we aimed to understand the sequence characteristics ,transmembrane structures ,line B cell epitopes present in the OMP18 from Campylobacter jejuni ,and provide candidate antigens for the antibody detection and vac-cine development .NCBI/Blast ,TMHMM Server V2 and DNA Star softwares were used for the OMP18 sequence analysis . Based on the ELISA ,the whole bacterial antibody IgG of Campylobacter jejuni was used for the identification of the predicted line B cell epitopes .The OMP18 gene was found conserved in different Campylobacter jejuni strains .The OMP18 was predic-ted to be located on the outer surface of the bacteria .And three line B cell epitopes were determined to be present in the OMP18 protein .As a conclusion ,the OMP18 protein was confirmed to be an important outer membrane protein ;three line B cell epitopes were identified in the OMP18 ,which could be further used for Campylobacter jejuni antibody detection and vaccine development .
4.The relationships among organization climate, psychological empowerment and job embeddedness
Yixin ZHAO ; Yang ZHAO ; Jiali FU ; Xiaoyun CHEN ; Wenfang WU ; Fenglan LOU
Chinese Journal of Practical Nursing 2014;30(13):29-32
Objective To explore the relationships among organization climate,psychological empowerment and job embeddedness by using path analysis.Methods A total of 514 clinical nurses from 26 departments in 3 hospitals were recruited by convenience cluster sampling method and investigated with demography questionnaire,Nurses Organizational Climate Scale,Psychological Empowerment Scale and Job Embeddedness Scale.Results The mean scores of organization climate,psychological empowerment and job embeddedness was (3.01±0.46),(3.27±0.44),(3.08±0.39).The predictors of job embeddedness of nurses were resources support,work experience,human resources management,marital status,job title,management support,quality management,and self-egicacy,explained 48.9% of its variance; organization climate,psychological empowerment had direct positive influence on nurses' job embeddedness,explained 33.3% of its variance.Conclusions Improvement and maintenance of sound organizational climate,increase the sense of psychological empowerment of nurses,are effective ways and means to increase the degree of job embedding of nurses.
5.Thiabendazole inhibits ubiquinone reduction activity of mitochondrial respiratory complex II via a water molecule mediated binding feature.
Qiangjun ZHOU ; Yujia ZHAI ; Jizhong LOU ; Man LIU ; Xiaoyun PANG ; Fei SUN
Protein & Cell 2011;2(7):531-542
The mitochondrial respiratory complex II or succinate: ubiquinone oxidoreductase (SQR) is a key membrane complex in both the tricarboxylic acid cycle and aerobic respiration. Five disinfectant compounds were investigated with their potent inhibition effects on the ubiquinone reduction activity of the porcine mitochondrial SQR by enzymatic assay and crystallography. Crystal structure of the SQR bound with thiabendazole (TBZ) reveals a different inhibitor-binding feature at the ubiquinone binding site where a water molecule plays an important role. The obvious inhibitory effect of TBZ based on the biochemical data (IC(50) ~100 μmol/L) and the significant structure-based binding affinity calculation (~94 μmol/L) draw the suspicion of using TBZ as a good disinfectant compound for nematode infections treatment and fruit storage.
Animals
;
Anthelmintics
;
metabolism
;
pharmacology
;
Binding Sites
;
Crystallography, X-Ray
;
Electron Transport Complex II
;
drug effects
;
Inhibitory Concentration 50
;
Mitochondria
;
drug effects
;
enzymology
;
Molecular Structure
;
Oxidoreductases
;
antagonists & inhibitors
;
chemistry
;
Structure-Activity Relationship
;
Swine
;
Thiabendazole
;
chemistry
;
metabolism
;
pharmacology
;
Ubiquinone
;
antagonists & inhibitors
;
Water
;
chemistry
;
metabolism
6.Effect of screening and treatment of syphilis among pregnant women on prevention of intrauterine syphilis transmission in Nantong City, 2012-2019
Haiqin LOU ; Biyun XU ; Xiaoyun GE ; Weiwei LIU ; Yueqin SHI ; Jiacong WU ; Yihua ZHOU
Chinese Journal of Perinatal Medicine 2021;24(8):576-583
Objective:To evaluate the intrauterine transmission of syphilis in Nantong City, Jiangsu Province from 2012 to 2019, after the introduction of a nationwide policy for preventing intrauterine transmission of syphilis in China in 2011.Methods:This study enrolled all live birth deliveries ( n=455 561) in Nantong from January 2012 to December 2019. The screening, infection rates, anti-syphilis treatment, intrauterine transmission of syphilis, and outcomes of infants with congenital syphilis were retrospectively analyzed using χ 2 test for trend, adjusted χ 2 test, or Fisher's exact test. Results:Except for three women, the remaining 455 558 subjects were all screened for syphilis antibody with a total screening rate of nearly 100%, among which prenatal screening accounted for 96.4% (439 125/455 561) and intrapartum screening for 3.6% (16 433/455 561). In total, 796 (0.17%) women were diagnosed with syphilis during pregnancy, and the prevalence increased from 0.13% (85/64 229) in 2012 to 0.24% (110/45 517) in 2019 (χ 2trend=48.985, P<0.001). The prevalence among women underwent intrapartum screening was significantly higher than those underwent prenatal screening [0.50% (82/16 433) vs 0.16% (714/439 125), χ 2=102.769, P<0.001]. Out of the women with syphilis, 716 (89.9%) received anti-syphilis therapy with 695 cases using penicillin, 16 cases using ceftriaxone and five using erythromycin/azithromycin, while the remaining 80 (10.1%) did not. Intrauterine transmission of syphilis occurred in 14 infants with a transmission rate of 1.8% (14/796). The reported rate of congenital syphilis in all live infants was 0.03‰ (14/460 552). The intrauterine transmission rate in women receiving treatment during pregnancy was significantly lower than that in the untreated women [0.4% (3/716) vs 13.8% (11/80), χ2=66.499, P<0.001]. For the untreated women, the intrauterine transmission rate increased with the rising titers of non-specific syphilis antibody ( χ2trend=5.338, P=0.021). Among infants with congenital syphilis, no obvious adverse outcomes occurred in three infants born to treated mothers, whereas the rates of preterm birth and neonatal death were 7/11 and 2/11 in those born to untreated mothers. Conclusions:Since the implementation of the policy against intrauterine transmission of syphilis, the reported rate of congenital syphilis is 3/100 000 live-birth in Nantong City, reaching the national target of below 15/100 000. Screening and treatment in the first trimester are critical for preventing intrauterine transmission of syphilis. Increased prenatal syphilis screening rate can help further reduction of the intrauterine transmission of syphilis.
7.Real-world efficacy of immunoprophylaxis against mother-to-infant transmission of hepatitis B virus based on puerperant population
Haiqin LOU ; Jihua ZHU ; Zhihong WANG ; Xiaoyun GE ; Mingjie PAN ; Biyun XU ; Yali HU ; Yihua ZHOU
Chinese Journal of Perinatal Medicine 2019;22(8):591-596
Objective To assess the efficacy of immunoprophylaxis against mother-to-infant transmission of hepatitis B virus (HBV) in a real-world setting since the implementation of charge-free hepatitis B immunoglobulin (HBIG) and hepatitis B vaccine in China. Methods The screening rate and the prevalence of hepatitis B surface antigen (HBsAg) in 61 790 puerperants, and the administration of combined immunoprophylaxis in infants of HBsAg-positive mothers in Rugao City of Jiangsu Province from July 1, 2011 to June 30, 2016 were retrospectively analyzed. HBV infection status of infants born to HBV infected mothers was followed up after 7 months of age. HBsAg-positive infants and their mothers were followed up again for HBV markers in April 2018. Fisher's exact test and Cochran-Armitage trend test were used to statistically analyze the differences between groups and various years, respectively. Results All 61 790 puerperants were screened for HBsAg and the prenatal screen rate was 98.6% (60 937/61 790) with an increasing trend over time (χ2trend=750.908, P<0.001). HBsAg-positive puerperants accounted for 5.5% (3 397/61 790) with a decreasing trend over time (χ2trend=32.667, P<0.001). In total, 778 offspring (399 boys and 379 girls) of 759 HBsAg-positive mothers were followed up at (13.7±6.9) months of age, among which 751 (96.5%) were administered and 25 (3.2%) were probably administered standard combined immunoprophylaxis after birth, and the rest two (0.3%) were not. Fourteen infants (1.8%) were HBsAg positive and all born to mothers with positive hepatitis B e antigen (HBeAg). None of the 538 infants born to HBeAg-negative mothers was HBsAg-positive. HBsAg-positive rate in infants born since 2013 was lower than those in 2011 and 2012 (χ2trend=13.352, P=0.000 3). Eleven HBsAg-positive mothers and their children were followed up again 4–5 years later in April 2018. HBV DNA levels of all mothers were within the range of (7.34–28.2)×107 IU/ml except one case of spontaneous HBeAg seroconversion. One out of the 11 infected children also had HBeAg seroconversion. Phylogenetic analysis of HBV S gene showed that the 11 pairs of mothers and children were all infected with HBV of genotype C. Conclusions The implementation of charge-free HBIG and hepatitis B vaccine for newborns achieves fruitful results in Rugao city as the mother-to-infant transmission of HBV in the real-world had been further reduced to a similar level reported in literature survey.
8.Structural basis of Zika virus helicase in recognizing its substrates.
Hongliang TIAN ; Xiaoyun JI ; Xiaoyun YANG ; Zhongxin ZHANG ; Zuokun LU ; Kailin YANG ; Cheng CHEN ; Qi ZHAO ; Heng CHI ; Zhongyu MU ; Wei XIE ; Zefang WANG ; Huiqiang LOU ; Haitao YANG ; Zihe RAO
Protein & Cell 2016;7(8):562-570
The recent explosive outbreak of Zika virus (ZIKV) infection has been reported in South and Central America and the Caribbean. Neonatal microcephaly associated with ZIKV infection has already caused a public health emergency of international concern. No specific vaccines or drugs are currently available to treat ZIKV infection. The ZIKV helicase, which plays a pivotal role in viral RNA replication, is an attractive target for therapy. We determined the crystal structures of ZIKV helicase-ATP-Mn(2+) and ZIKV helicase-RNA. This is the first structure of any flavivirus helicase bound to ATP. Comparisons with related flavivirus helicases have shown that although the critical P-loop in the active site has variable conformations among different species, it adopts an identical mode to recognize ATP/Mn(2+). The structure of ZIKV helicase-RNA has revealed that upon RNA binding, rotations of the motor domains can cause significant conformational changes. Strikingly, although ZIKV and dengue virus (DENV) apo-helicases share conserved residues for RNA binding, their different manners of motor domain rotations result in distinct individual modes for RNA recognition. It suggests that flavivirus helicases could have evolved a conserved engine to convert chemical energy from nucleoside triphosphate to mechanical energy for RNA unwinding, but different motor domain rotations result in variable RNA recognition modes to adapt to individual viral replication.
Crystallography, X-Ray
;
Protein Domains
;
RNA Helicases
;
chemistry
;
RNA, Viral
;
chemistry
;
Viral Proteins
;
chemistry
;
Zika Virus
;
enzymology