Objective To investigate the effects of astragalus membranaceus parenteral solution combined with recombinant human erythropietin (rHuEPO) on erythrocyte immunity function in patients with hemodialysis. Methods Fifty-one patients of chronic renal failure(CRF) with hemodialysis were divided into 2 groups randomly according to whether treated with astragalus membranaceus parenteral solution or not(therapeutic group, was 26 cases and control group was 25 cases). IgG, IgA, IgM, RBC-C3b,RR,RBC-ICR, erythrocyte percentage of CD35 positive and SOD was measured before treatment and 8 weeks after treatment. Results After 8 weeks' treatment, IgG,IgA,IgM levels in therapeutic group and IgG,IgA levels in control group were higher than those before treatment(P < 0.01 ). IgM [ (2.03±0.73 ) g/L ] was higher than that in control group (P< 0.05). RBC-C3B,RR, erythrocyte percentage of CD35 positive and SOD were higher and RBC-ICR was lower than those before treatment in two groups (P < 0.05 ) ;compared with that in control group, RBC-C3b, RR was higher [(10.85±2.31 )% ] and RBC-ICR was lower [(5.34±1.91 )% ] (P < 0.05 ).Conclusion Astragalus membranaceus parenteral solution combined with rHuEPO is superior to improve CRF patients' levels of immune globulin and erythrecyte immunity function.

Objective To detect the relationship between plasma B-type natriuretic peptide(BNP) and left ventricular function in elderly patients with maintenance hemodialysis (MHD). Method Plasma BNP concentration were measured in 50 MHD patients (MHD group) and 30 healthy controls (control group). Echocardiographic examinations were performed including left ventricular ejection fraction (LVEF). Results The median plasma BNP level in MHD group before and after hemodialysis was 213.5 ng/L and 110.2 ng/L, and obviously higher than that in control group (20.2 ng/L) (P<0.01). Spearman rank correlation showed that plasma BNP level was significantly negatively correlated with LVEF (r=-0.4357, P< 0.05). The median plasma BNP level in the patients with LVEF < 50% before and after hemodialysis was 386.5 ng/L and 232.0 ng/L, significantly higher than that in the patients without left ventricular dysfunction (LVEF≥50%) (59.7 ng/L and 29.1 ng/L)(P<0.01). Conclusions The level of BNP may reflect dynamic change of left ventricular function in MHD patients. It can help to diagnose and treat cardiovascular disease in MHD patients early.

Objective To purify recombinant methioninase and investigate the synergetic inhibitory effect of methioninase and cisplatin on the proliferation of human lung adenocarcinoma cell line GLC. Methods Recombinant methioninase was purified with GST-column from supernatant after ultrasonic disruption of cultured Escherichia coli in the prokaryotic expression system pGEX-4T-1-Met/Dh5a. MTT assay was used to determine the inhibition rate of methioninase in combined with cisplatin on cell proliferation,and their synergistic effect was evaluated by using the q value judge method. Results The concentration of recombinant methionine cleaving enzyme was 0.22 mg/mL, the purity was 95%, and the activity was 0.568 IU/mg. After 72 h culturing, the inhibition rate of cisplatin methionine was 24.80%and 27.49%respectively,while the inhibition rate of the combined drugs was 66.80% ( =1.47>1.15) which showed a significant synergistic effect. Conclusion Both methioninase and cisplatin have the inhibition effect,and the combined drugs display a significant synergistic effect on the proliferation of GLC.

[Abstract ] Objective The role of serum Pygo2 expression in children with non-alcoholic fatty liver disease(NAFLD) in the disease process and whether it can be used to evaluate the degree of liver fibrosis still remain unknown .The article aimed to detect Pygo 2 expression in the peripheral blood of children with NAFLD and ana-lyze its relationship with traditional serum hepatic fibrosis index in or-der to evaluate the clinical significance of Pygo 2 measurement in chil-dren with NAFLD . Methods We enrolled 120 cases of childhood obesity and 18 healthy controls in Anhui Provincial Hospital and the First Affiliated Hospital of Nanjing Medical University from September 2014 to February 2016.The cases of childhood obesity were di-vided into simple obesity group ( n=44, no diffuse fatty liver under liver ultrasound detection ) , NAFL group ( n=35, diffuse fatty liver with normal liver function under liver ultrasound detection ) and NASH group ( n=41, diffuse fatty liver with abnormal liver function under liver ultrasound detection ) .The peripheral serum was collected from all patients and healthy controls .ELISA was used to detect serum Pygo2 expression and radioimmunoassay was used to detect the serum hyaluronia acid (HA), procollagen type Ⅲ(PCⅢ), pro-collagen type Ⅳ(CⅣ) and laminin(LN) levels.Finally the serum ALT and γ-GT levels were measured with totally automatic enzymat-ic method. Results Pygo2 expression in NAFL group [52.1(12.3)μg/L] and NASH group[78.3(50.0)μg/L] increased signifi-cantly compared with simple obesity group [43.2(18.7)μg/L](P<0.05).Pygo2 expression in NASH group increased significantly compared with control group [41.7(16.8)μg/L] and NAFL group (P<0.001).The serum hepatic fribrosis and inflammation markers ( HA, PC, ALT, C III and IV gamma-GT) levels gradually increased in the obese children .There were statistically positive correla-tions between serum Pygo2 and HA, PCⅢ, CⅣ, ALT or γ-GT (P<0.001).In particular, more significant positive correlations were found between serum Pygo2 and HA, CⅣor γ-GT (r=0.708, P<0.001;r=0.589, P<0.001;r=0.674, P<0.05). Conclusion The degree of liver fibrosis worsens with the increase of Pygo 2 expression and Pygo 2 is in remarkable correlation with conventional he-patic fibrosis serum makers ( HA, C IV) orγ-GT, which shows Pygo 2 expression can be taken as the clinical evaluation index of liver fibrosis in children with NAFLD .

Objective This study aims to comprehensively investigate the molecular characteristics of the predominant circulating Dengue virus type 1 (DENV-1) during the 2019 Dengue fever outbreak in Xishuangbanna, providing an essential insight to support the prevention and control of dengue fever in the local area. Methods A Dengue virus type 1 (DENV-1) strain, designated as JHS45, isolated from the blood of a febrile patient in Xishuangbanna in 2019, underwent a process of inoculation and cultivation in C6/36 cells. Second-generation sequencing was employed to capture the viral genetic sequence. Bioinformatics software, including CLC, was used for assembling the sequencing data. Sequentially, sequence alignment, construction of a phylogenetic tree, and analysis of amino acid sites were conducted using software such as Lasergene and MEGA6.1. Results Cytopathic effects of JHS45 appeared in C6/36 cells after 6 days. After sequencing and assembly, a 10 687-nucleotide (nt) long sequence of the JHS45 virus was obtained (GenBank accession number: OR593353). Genetic evolutionary analysis revealed that the JHS45 virus formed an evolutionary branch with DENV-1 genotype I viruses prevalent in Xishuangbanna, Guangzhou, Henan, and Zhejiang in China during 2019, as well as the DENV-1 genotype I virus prevalent in Thailand in 2013, with nucleotide homology of 97.6% to 99.9% and amino acid homology of 99.1% to 100%. Further analysis revealed that the JHS45 strain shared a smaller evolutionary branch with the DENV-1 genotype I viruses prevalent in Xishuangbanna (MW386863) and Guangzhou (MW261839) in 2019, showing the highest homology with nucleotide and amino acid homology of 99.9% and 100%, respectively. Amino acid differential site analysis between the JHS45 strain and the DENV-1 prevalent in Xishuangbanna since 2015 revealed 40 amino acid differential sites in the coding region of the JHS45 virus, primarily concentrated in the NS3 and NS5 regions of non-structural proteins. Conclusion The comprehensive analysis of the JHS45 strain's whole genome sequence indicates it is a DENV-1 genotype I virus. The genetic evolutionary relationship between this Xishuangbanna dengue fever outbreak is closely related to the prevalent virus strains in Xishuangbanna, Guangzhou, Henan, and Zhejiang. These findings provide a robust scientific foundation for monitoring dengue fever outbreaks, conducting virus evolution studies, and shaping effective prevention and control strategies, not only within Yunnan Province but also on a broader scale throughout China.

Objective To investigate the mRNA expression and methylation status of IL-13 receptor(IL-13R)α1 gene in peripheral T lymphocytes of patients with systemic lupus erythematosus(SLE).Methods Venous blood samples were obtained from 10 SLE patients(5 in active phase,5 in inactive phase)and 6 normal human controls.CD4+ and CD8+ T cells were isolated from these samples via magnetic activated cell sorting(MACS).Real-time quantitative PCR was used to test the mRNA expression of IL-13Rα1 gene,and methylation specific PCR to detect the methylation status.Results The expression level of IL-13Rα1 mRNA was 2.224±0.251,1.712±0.132.and 1.104±0.044 in CD4+ T cells of active SLE patients,inactive SLE patients and controls,respectively;the difference between the three groups was statistically significant(all P＜0.05).The expression level of IL-13Rα1 mRNA in CD8+T cells was significantly higher in active SLE patients than that in the normal controls(1.672±0.142 vs 1.238±0.106,P＜0.05),while no difference was noted between inactive and active SLE patients or normal controls.The methylation index of IL-13Rα1 gene was 0.454±0.023.0.635±0.065.0.844±0.097 in CD4+T cells of active SLE patients,inactive SLE patients and normal controls,respectively,and the difference between the three groups was significant(all P＜0.05),while no significant difference was observed in the methylation index in CD8+T cells among these groups(P＞0.05).The IL-13Rα1 mRNA expression in CD4+T and CD8+T cells was positively correlated with SLE disease activity index(SLEDAI)score(r=0.79,0.76,P=0.007,0.02 respectively).A negative correlation was found between the methylation level Of IL-13Rα1 in CD4+T cells and SLEDAI score(r=-0.89.P＜0.0 1).as well as between the IL-13Rα1 mRNA expression and its methylation level(r=-0.84,P＜0.0 1).Conclusion The development of SLE may be related to the overexpression of IL-13Rα1 gene induced by DNA hypomethylation in T cells.

Objective:To prevent the possible effects of population aging and find out countermeasures to ensure the sustainable development of basic medical insurance fund balances.Methods:Using system dynamics,by coupling the three subsystems of basic medical insurance fund income,basic medical insurance fund expenditure,and population size,a causal relationship diagram and stock flow diagram are drawn to construct a system dynamics model,and Vensim Software is used for simulation.Results:Under the predicted natural conditions,the balance of the basic medical insurance fund will show a trend of first increasing and then decreasing from 2023 to 2030.Adjusting and combining the three variables of retirement strategy,outpatient visits,and participation rate into four solutions,among which simultaneously implementing the prediction plan of delaying retirement,expanding basic medical insurance coverage,and strengthening elderly health management can significantly reduce the decline of the basic medical insurance fund.Conclusion:The aging population will be detrimental to the sustainable development of the surplus of the basic medical insurance fund.Based on this,the following suggestions are proposed:implement appropriate delayed retirement policies to increase the income of the basic medical insurance fund;further expand the coverage of insured individuals to enhance the risk resistance of the basic medical insurance fund;strengthen the health management of the elderly to control the excessively rapid growth of the basic medical insurance fund expenditures.

Objective:To prevent the possible effects of population aging and find out countermeasures to ensure the sustainable development of basic medical insurance fund balances.Methods:Using system dynamics,by coupling the three subsystems of basic medical insurance fund income,basic medical insurance fund expenditure,and population size,a causal relationship diagram and stock flow diagram are drawn to construct a system dynamics model,and Vensim Software is used for simulation.Results:Under the predicted natural conditions,the balance of the basic medical insurance fund will show a trend of first increasing and then decreasing from 2023 to 2030.Adjusting and combining the three variables of retirement strategy,outpatient visits,and participation rate into four solutions,among which simultaneously implementing the prediction plan of delaying retirement,expanding basic medical insurance coverage,and strengthening elderly health management can significantly reduce the decline of the basic medical insurance fund.Conclusion:The aging population will be detrimental to the sustainable development of the surplus of the basic medical insurance fund.Based on this,the following suggestions are proposed:implement appropriate delayed retirement policies to increase the income of the basic medical insurance fund;further expand the coverage of insured individuals to enhance the risk resistance of the basic medical insurance fund;strengthen the health management of the elderly to control the excessively rapid growth of the basic medical insurance fund expenditures.

Objective:To prevent the possible effects of population aging and find out countermeasures to ensure the sustainable development of basic medical insurance fund balances.Methods:Using system dynamics,by coupling the three subsystems of basic medical insurance fund income,basic medical insurance fund expenditure,and population size,a causal relationship diagram and stock flow diagram are drawn to construct a system dynamics model,and Vensim Software is used for simulation.Results:Under the predicted natural conditions,the balance of the basic medical insurance fund will show a trend of first increasing and then decreasing from 2023 to 2030.Adjusting and combining the three variables of retirement strategy,outpatient visits,and participation rate into four solutions,among which simultaneously implementing the prediction plan of delaying retirement,expanding basic medical insurance coverage,and strengthening elderly health management can significantly reduce the decline of the basic medical insurance fund.Conclusion:The aging population will be detrimental to the sustainable development of the surplus of the basic medical insurance fund.Based on this,the following suggestions are proposed:implement appropriate delayed retirement policies to increase the income of the basic medical insurance fund;further expand the coverage of insured individuals to enhance the risk resistance of the basic medical insurance fund;strengthen the health management of the elderly to control the excessively rapid growth of the basic medical insurance fund expenditures.

Objective:To prevent the possible effects of population aging and find out countermeasures to ensure the sustainable development of basic medical insurance fund balances.Methods:Using system dynamics,by coupling the three subsystems of basic medical insurance fund income,basic medical insurance fund expenditure,and population size,a causal relationship diagram and stock flow diagram are drawn to construct a system dynamics model,and Vensim Software is used for simulation.Results:Under the predicted natural conditions,the balance of the basic medical insurance fund will show a trend of first increasing and then decreasing from 2023 to 2030.Adjusting and combining the three variables of retirement strategy,outpatient visits,and participation rate into four solutions,among which simultaneously implementing the prediction plan of delaying retirement,expanding basic medical insurance coverage,and strengthening elderly health management can significantly reduce the decline of the basic medical insurance fund.Conclusion:The aging population will be detrimental to the sustainable development of the surplus of the basic medical insurance fund.Based on this,the following suggestions are proposed:implement appropriate delayed retirement policies to increase the income of the basic medical insurance fund;further expand the coverage of insured individuals to enhance the risk resistance of the basic medical insurance fund;strengthen the health management of the elderly to control the excessively rapid growth of the basic medical insurance fund expenditures.