ABSTRACT
Objective To analyze the epidemic situation of inter-human brucellosis in Zhongwei City of Ningxia from 2005 to 2017,and to provide basis for making scientific and effective prevention and control measures of the disease.Methods Incidence data of brucellosis were collected in Zhongwei City from 2005 to 2017 and prevalence trends and distribution characteristics (place,time,and population distribution) were analyzed by descriptive epidemiological method.Results A total of 1 880 human brucellosis cases were reported in Zhongwei City from 2005 to 2017.The incidence of brucellosis in 2012 and 2015 was 5.03/100 000 and 61.80/100 000,which showed a dramatic and rapid ascent (x2trend =681.40,P ＜ 0.05),while after 2016,it showed a downward trend (xtrend =324.85,P ＜ 0.05),and in 2017 the reported incidence dropped to 25.13/100 000.Zhongning and Haiyuan Counties showed a high incidence from 2005 to 2017,and the incidence was 39.79％(748/1 880) and 36.06％ (678/1 880),respectively;April to September was the peak season;the sex ratio was 2.72:1.00 (1 375/505);1 379 cases (73.35％)occurred between 30 and 64 years old,and 1 616 cases (85.96％) occurred among farmer.Conclusion After 2016,the incidence of human outbreaks in Zhongwei City has declined;Zhongning and Haiyuan Counties are the key areas of morbidity;the key population for prevention and control is farmer.
ABSTRACT
The aim of this study is to prepare and characterize cardiac troponin T (cTnT) monoclonal antibodies (mAb), and further develop a chemiluminescence quantitative detection assay for cTnT. BALB/c mice were immunized with recombinant cTnT antigen, and specific mAbs were prepared using conventional hybridoma technique and screened by indirect ELISA method. To identify the epitopes, several cTnT peptide fragments were synthesized or expressed by genetic engineering. A double antibody sandwich ELISA method was used to screen the mAb pairs for cTnT detection, and the automatic chemiluminescence detection assay for cTnT was developed. In total 220 clinical specimens were used for system comparison between our assay and Roche cTnT assay; further performance characteristics was evaluated by testing 238 clinical samples and 784 physical examination samples. We successfully screened 33 strains of hybridoms against cTnT, and the mAbs' epitopes were identified. Mab E16H8 and C8G11 with a detection limit of 10 pg/mL cTnT antigen were selected to develop the full automatic chemiluminescence quantitative assay. The correlation coefficient of our reagent with Roche's was 0.959 9, with a coincidence rate of 95%. The assay presented a sensitivity of 97.5%, and a specificity of 99.15% in detection of clinical samples. The cTnT concentration was less than 0.080 6 ng/mL in 99% of general population, which agrees with the definition of WHO on patients with acute myocardial infarction (AMI). In summary, we developed monoclonal antibodies against predominant epitopes for diagnostics of cTnT, and an automatic tubular chemiluminescence quantitative detection assay was further developed, which presents a high coincidence rate with Roche's.
Subject(s)
Humans , Antibodies, Monoclonal , Allergy and Immunology , Enzyme-Linked Immunosorbent Assay , Epitopes , Allergy and Immunology , Hybridomas , Luminescent Measurements , Myocardial Infarction , Peptide Fragments , Sensitivity and Specificity , Troponin T , Allergy and ImmunologyABSTRACT
ObjectiveTo evaluate the safety and feasibility of the standardized management model of anesthesia for painless digestive endoscopy.MethodsData of 17 100 patients who underwent painless endoscopy were reviewed for severe adverse reaction and complications.The model included anaesthetist-directed appointment,nurse assistance during operation,and postoperative nurse observation.Eight hundred cases (200 of gastric endoscopy,intestinal endoscopy,EUS and ERCP respectively) were randomly selected and analyzed for times of endoscopic diagnosis,anesthesia,wakening and discharge,and complications.ResultsOf the 17 100 cases,severe complications occurred in 10 (0.058％ ),including 3 apnea,one respiratory obstruction due to opisthognathism and glossoptosis,five larygneal spasm and 1 reflux inspiration.There was no anesthesia or endoscopy related death.Study of 800 cases showed intraoperative MAP,HR increase or decrease over 30％ of the baseline,the incidence of SpO2 ＜ 95％ were 6.0％ ～ 25.0％,3.0％ ～8.5％,≤2.0％,respectively.The rate of lethe,good quality of sleep were 99％ ～ 100％ and 98.0％ ～100.0％,respectively.The rates of cough,body movement and myoclonic were 0.5％ ～4.5％,5.5％ ～11.5％,and 1.5％ ～ 3.5％,respectively.Rates of nausea and vomiting,excitement,restlessness and dizziness were lower than 4％.ConclusionThe standardized management model,feasible,safe and effective,is able to facilitate anesthetic efficacy and reduce complications.