Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Female ; Humans ; Male ; Middle Aged ; Paraquat ; poisoning ; urine ; Prognosis ; Young Adult

Objective To establish an indirect immunofluorescence assay for detection of murine norovirus ( MNV) .Methods Mouse leukaemic monocyte macrophage cell line RAW 264.7 cells were infected with MNV-1 and cultured for 36 hours to collect the virus and uninfected cells , and to make antigen glass slides .BALB/c mice were gavaged with MNV-1 (107 TCID50) and infected sera were collected as positive control .The serum was 1:10 diluted and used for measuring MNV antibody by immunofluorescence assay ( IFA ) .80 serum samples were tested using the two methods , IFA and ELISA, and the discrepant samples were validated by Western blotting .Results RAW264.7 cells were infected with MNV-1 for 36-48 h, showing an infection rate of 60% of the cells, and the cells infected for 36 h were preferred.IFA method was used to detect the serum with MNV-1 infection and showed that the antibody content was gradually increased at one week after infection , reaching a maximum antibody concentration at 4 weeks after infection , and maintained a stable level later .The mouse serum at four weeks after MNV-1infection was used as positive quality control . Among the 80 serum samples , 27 positive and 53 negative cases were detected by IFA method , and 32 positive and 48 negative cases were detected by ELISA .The five discrepant samples were verified by Western blotting , resulted in 3 positive and 2 negative cases . The coincidence rate of IFA was 96.0% and that of ELISA methods was 97.5%. Conclusions Basically, immunofluorescence assay can be used to detect the MNV-1 infection in mice, although false negative result may occur occasionally .IFA and ELISA detection can be selected as initial screening measures , and use Western blot assay to verify the discrepant samples .

Objective To investigate the effects of circadian clock gene Period2(Per2)on the proliferation,differentiation and apoptosis of K562 cells and its probable molecular mechanism.Methods The Per2 expression plasmid pcDNA3.1-Per2 and empty control plasmid were respectively transfected into K562 cells with cationic liposome,and the resistant cells stably expressing Per2 gene were obtained by G418 selection.Their morphological changes were observed under light microscope following Wright-Giemsa staining.Trypan blue excluding staining and MTT assay were employed to evaluate cell proliferation.Flow cytometry was performed to analyze cell cycle distribution and cell apoptosis,and electron microscopy was used to detect cell apoptosis.Meanwhile,the expressions of proliferation and apoptosis associated proteins,such as P53,Cyclin B1 and C-Myc,were respectively detected by RT-PCR and Western blot analysis at mRNA and protein level.Results The K562/Per2 cell line stably expressing Per2 gene was screened out.As compared with either the empty plasmid transfected group(K562/empty)or the untreated group(K562/untreated),K562/Per2 cells was smaller in volume and showed no obvious cellular differentiation.Circadian clock gene Per2 could significantly inhibit both growth and proliferation of K562 cells.The percentage of K562 cells in G2/M phase increased [K562/Per2 group(36.1?5.5)%,K562/empty group(12.5?2.9)%,untreated group(9.7?2.3)%,P

Objective To investigate the effects of early intensive therapy on P cell function and long-term glycemic control in newly diagnosed type 2 diabetic patients with different recruiting fasting plasma glucose (FPG) levels.Methods A total of 382 newly diagnosed type 2 diabetic patients with FPG 7.0-16.7 mmol/L were randomly assigned to therapy with insulin in the form of continuous subcutaneous insulin infusion (CSII) or multiple daily injection (MDI) or oral hypoglycemic agents (OHA, by using gliclazide and/or metformin) for initial rapid correction of hyperglycemia.The treatments were stopped after euglycemia had been maintained for 2 weeks.The patients were followed longitudinally on diet alone for 1 year.Intravenous glucose tolerances tests (IVCTTs) were performed and blood glucose, insulin and proinsulin were measured before and after therapy as well as at 1-year follow-up.Homeostasis model assessment ( HOMA) of β cell function and insulin resistance index ( HOMA-β and HOMA-IR ) were calculated.All the patients were stratified on the recruiting FPG: stratum A (7.0 mmol/L≤ FPG < 11.1 mmol/L) , stratum B (11.1 mmol/L≤ FPG ≤ 16.7 mmol/L).Results More patients in stratum A achieved target glycemic control (94.4% vs 89.8% ) and in shorter time [(5.9 ±3.8)d vs(6.9 ±3.6)d, P <0.05] as compared with those in stratum B.B cell function represented by HOMA-β and acute insulin response ( AIR) improved significantly after intensive interventions in both stratum A and B patients.However, the remission rate at 1 year was significantly higher in stratum A patients (47.8% ) than those in stratum B (35.7%, P < 0.05).The patients treated with insulin (especially with CSII) had higher remission rates and better improvement of AIR at 1 year follow-up irrespective of the recruiting FPG (CSII or MDI vs OHA: 57.1% , 51.8% vs 32.8% in stratum A, P <0.05; 44.4% , 38.7% vs 18.6% in stratum B, P <0.05).Conclusions Compared with OHA, early short time intensive insulin treatment had more favorable outcomes on maintaining AIR and prolonged glycemic remission in newly diagnosed type 2 diabetic patients irrespective of the recruiting FPG levels.

Objective: To understand the characteristics and causes of pesticide poisoning in Xuzhou city, and provide basis for formulating prevention and control measures. Methods: The cases of pesticide poisoning in Xuzhou City from 2005 to 2017 were collected from "Pesticide Poisoning Report Card" . The data were analyzed and assessed by EpiData. The SPSS 22.0 software was used for statistical analysis. Results: During the thirteen years, there were a total of 8092 cases of pesticide poisoning, among which, the number of occupational pesticide poisoning was 1 408, accounting for 17.4% of the total number of cases, 14 patients died, the case fatality rate was 0.1%. There were 2, 992 cases of male poisoning, accounting for 36.97% of the total number of cases, and 5, 100 cases of female poisoning, accounting for 63.03%. There were 6684 non-productive pesticide poisonings, accounting for 82.6% of the total number of cases; 387 deaths occurred, and the mortality rate was 5.8%. Among non-productive poisonings, the incidence of oral pesticide poisoning was 84.3%, and the incidence of accidental poisoning by pesticides was 15.7%. Organophosphorus pesticides poisoning cases accounted for the majority of oral pesticide poisoning cases. The overall incidence of pesticide poisoning showed a downward trend. The age of non-productive pesticide poisoning cases was mainly 15-44 years old, and the number of cases of poisoning were 4 029 cases (60.28%) . With the increase of age, the mortality rate of poisoning cases was higher, especially for those over 60 years old who died of oral pesticide poisoning (40.1%) . The peak of pesticide poisoning began to increase in the second quarter and reached its peak in the third quarter. Conclusion Although the cases of pesticide poisoning reported in Xuzhou City have been declining in recent years, the situation is still severe. The proportion of oral pesticide suicide accounts for a large proportion, and the mortality rate of elderly and female is relatively high, and the government should pay more attention. Workers should conduct safety education and psychological counseling to improve the knowledge and consciousness of safe use of pesticides.

Objective:To investigate the factors influencing the short-term prognosis of patients with acute diquat poisoning (ADQP).Methods:Patients with ADQP admitted to the Affiliated Hospital of Xuzhou Medical University and Xuzhou Occupational Disease Prevention Hospital from August 2015 to July 2022 were retrospectively selected. Patients were divided into survival group and death group according to 30-day survival status after poisoning. The general data and the results of the first laboratory examination after admission were compared between the two groups. Logistic regression analysis was used to analyze the independent risk factors associated with prognosis. And the receiver operating characteristic (ROC) curve was drawn to evaluate the prognostic value of risk factors in patients with ADQP.Results:A total of 79 ADQP patients were included in this study, including 40 patients in the survival group and 39 patients in the death group. There were statistically significant differences in the age, poisoning dose, white blood cell, alanine aminotransferase, aspartate aminotransferase, serum creatinine, blood urea, neutrophil to lymphocyte ratio, monocyte to lymphocyte ratio, and systemic immune inflammation index (SII) between survival and death groups (all P<0.05). Multivariate logistic regression analysis showed that the poisoning dose ( OR=1.018, 95% CI: 1.001-1.035, P=0.033), serum creatinine ( OR=1.049, 95% CI: 1.005-1.095, P=0.028), and SII ( OR=1.001, 95% CI: 1.000-1.002, P=0.029) were independent risk factors for the prognosis of patients with diquat poisoning. The areas under the curves of the combined detection of poisoning dose, serum creatinine and SII was 0.968, the sensitivity was 0.949, and the specificity was 0.900, which were higher than those of the single index. Conclusions:The poisoning dose, serum creatinine and SII are independent prognostic predictors of patients with ADQP. The combination of three independent factors has higher sensitivity and specificity in evaluating the prognosis of ADQP, which could be used as a reliable indicator to predict the prognosis of patients with ADQP.

Objective To observe the effect of early intervention and intermittent application of bi level positive airway pressure ventilation (BiPAP) in patients with pneumoconiosis combined with chronic respiratory failure.Methods Will meet the diagnostic criteria of pneumoconiosis in GBZ70-2009＜ ＞,the blood gas analysis in patients with chronic type II respiratory failure in 62 cases were randomly divided into rehabilitation treatment group 32 cases,control group of 30 cases.Patients in the observation group were treated by on-invasive ventilation,while the control group were treated by the conventional treatment.The data such as arterial blood gas、pulmonary function、the grade about dyspnea and echocardiography was collected from the both group before the beginning of the treatment and after the three months.Results the PaO2 level、FEV1.0、FEV1.0％ 、the grade of dyspnea and the Right Ventricular Ejection Fractions were not significantly different between the experimental group and the control before the start of the treatment (P＞0.05).After the three month treatment,the PaO2 level of the observation was significantly lower the control (P＜0.05).The data about FEV1.0、FEV10％ and the Right Ventricular Ejection Fractions were higher than the control group (P＜0.05).Conclusion Non-invasive ventilation has exactly effect in the treatment of the pneumoconiosis patients with Chronic Respiratory Failure.It can improve the function of the heart and lung and ease the pain of patients.

Objective:To investigate the CT features of lung injury induced by paraquat poisoning and its relationship with prognosis, and to provide reference for the judgment of the condition and prognosis of paraquat poisoning.Methods:146 cases of paraquat poisoning patients were treated in the Third People's Hospital of Xuzhou City from January 2013 to April 2016. The cases were divided into mild group, moderate-severe group and fulminant group according to the concentration of paraquat in urine. The clinical data and CT imaging findings were analyzed and reconstructed in three-dimensional reconstruction. The extent of the lesion was observed and the relationship between CT and prognosis was explored.Results:Paraquat lung injury has many manifestations on CT images, and it's performance can be intersecting at the same time. Early lesions lighter cases, late CT imaging lesions can be completely absorbed or residual fibrosis, the prognosis was good; the early lesion was pulmonary consolidation, pleural effusion cases, the late CT image was usually pleural thickening and bronchiectasis, the prognosis was relatively good; early lesions were large patches of ground glass opacity cases, finally, pulmonary fibrosis was common, the mortality rate of 56.57%. There were significant differences in the extent of lung injury between different groups ( P<0.001) , and the difference in mortality was statistically significant when the lung injury was different ( P<0.001) . Multivariate stepwise Logistic regression analysis showed that ground-glass opacity ( OR value=2.013) , interstitial lung fibrosis ( OR=3.779) and mediastinal emphysema ( OR=33.118) were risk factors for death of lung injury caused by paraquat poisoning ( P<0.05) . Conclusion:There were many manifestations on CT images of paraquat lung injury, and the manifestations of paraquat lung injury can be intersecting at the same time. The pulmonary manifestations and outcomes of different paraquat types were different. The CT manifestations of lung injury in paraquat poisoning were mainly exudative changes at early stage, and can be gradually absorbed or evolved into interstitial changes at later stage. The cumulative damage range can be used as a reference for evaluating the prognosis. Ground-glass opacity, interstitial pulmonary fibrosis and mediastinal emphysema are the risk factors for death of lung injury caused by paraquat poisoning.

Objective To observe the effect of early intervention and intermittent application of bi level positive airway pressure ventilation (BiPAP) in patients with pneumoconiosis combined with chronic respiratory failure.Methods Will meet the diagnostic criteria of pneumoconiosis in GBZ70-2009＜ ＞,the blood gas analysis in patients with chronic type II respiratory failure in 62 cases were randomly divided into rehabilitation treatment group 32 cases,control group of 30 cases.Patients in the observation group were treated by on-invasive ventilation,while the control group were treated by the conventional treatment.The data such as arterial blood gas、pulmonary function、the grade about dyspnea and echocardiography was collected from the both group before the beginning of the treatment and after the three months.Results the PaO2 level、FEV1.0、FEV1.0％ 、the grade of dyspnea and the Right Ventricular Ejection Fractions were not significantly different between the experimental group and the control before the start of the treatment (P＞0.05).After the three month treatment,the PaO2 level of the observation was significantly lower the control (P＜0.05).The data about FEV1.0、FEV10％ and the Right Ventricular Ejection Fractions were higher than the control group (P＜0.05).Conclusion Non-invasive ventilation has exactly effect in the treatment of the pneumoconiosis patients with Chronic Respiratory Failure.It can improve the function of the heart and lung and ease the pain of patients.

Objective:To investigate the CT features of lung injury induced by paraquat poisoning and its relationship with prognosis, and to provide reference for the judgment of the condition and prognosis of paraquat poisoning.Methods:146 cases of paraquat poisoning patients were treated in the Third People's Hospital of Xuzhou City from January 2013 to April 2016. The cases were divided into mild group, moderate-severe group and fulminant group according to the concentration of paraquat in urine. The clinical data and CT imaging findings were analyzed and reconstructed in three-dimensional reconstruction. The extent of the lesion was observed and the relationship between CT and prognosis was explored.Results:Paraquat lung injury has many manifestations on CT images, and it's performance can be intersecting at the same time. Early lesions lighter cases, late CT imaging lesions can be completely absorbed or residual fibrosis, the prognosis was good; the early lesion was pulmonary consolidation, pleural effusion cases, the late CT image was usually pleural thickening and bronchiectasis, the prognosis was relatively good; early lesions were large patches of ground glass opacity cases, finally, pulmonary fibrosis was common, the mortality rate of 56.57%. There were significant differences in the extent of lung injury between different groups ( P<0.001) , and the difference in mortality was statistically significant when the lung injury was different ( P<0.001) . Multivariate stepwise Logistic regression analysis showed that ground-glass opacity ( OR value=2.013) , interstitial lung fibrosis ( OR=3.779) and mediastinal emphysema ( OR=33.118) were risk factors for death of lung injury caused by paraquat poisoning ( P<0.05) . Conclusion:There were many manifestations on CT images of paraquat lung injury, and the manifestations of paraquat lung injury can be intersecting at the same time. The pulmonary manifestations and outcomes of different paraquat types were different. The CT manifestations of lung injury in paraquat poisoning were mainly exudative changes at early stage, and can be gradually absorbed or evolved into interstitial changes at later stage. The cumulative damage range can be used as a reference for evaluating the prognosis. Ground-glass opacity, interstitial pulmonary fibrosis and mediastinal emphysema are the risk factors for death of lung injury caused by paraquat poisoning.