1.Effect of Eradication of Helicobacter Pylori on Non-alcoholic Fatty Liver Disease
Pengfei ZHANG ; Fengzhi QUAN ; Yan YANG
Chinese Journal of Rehabilitation Theory and Practice 2017;23(6):725-727
Objective To observe the effect of eradication of helicobacter pylori (Hp) combined with comprehensive rehabilitation treat-ment on patients with non-alcoholic fatty liver disease (NAFLD). Methods From December, 2015 to April, 2016, 219 patients diagnosed as NAFLD with Hp infection were enrolled, in which 119 patients (observation group) were treated with anti Hp quadruple therapy. They were tested with 13C urea breath test one month after drug withdrawal. The other 100 patients were as control group. The severity of NAFLD was observed with abdominal ultrasound after six months. Results After treatment, Hp was eradicated in 107 cases (90.68%) in the observation group, one dropped out for pulmonary infection. After six months, the severity of NAFLD improved better in the patients eradicated Hp in the observation group than in the control group (χ2=8.397, P<0.05). Conclusion Eradication of Hp combined with comprehensive rehabilita-tion treatment can improve the severity of NAFLD.
3.Intervention of siRNA to the effect of gelatinase on the expression of ICAM-1 in human renal tubular epithelial cells
Yan MEI ; Quan HONG ; Xueguang ZHANG
Medical Journal of Chinese People's Liberation Army 2001;0(07):-
Objective To inhibit the expression of matrix metalloproteinase-2(MMP-2) and matrix metalloproteinase-9(MMP-9) in human kidney tubular epithelial cell(HKC) with specific small interference RNA(siRNA),then to observe whether the expression of intercellular adhesion molecule-1(ICAM-1) on HKC could be influenced.Methods HKCs were transfected with MMP-2,MMP-9 siRNA or irrespective siRNA respectively,untransfected HKC was considered as blank control.Four groups of HKCs were stimulated with 100nmol/L phorbol myristate acetate(PMA) for 18h.Total RNA or protein of cells were extracted with Trizol and RIPA cell lysate respectively,the mRNA expression levels of MMP-2,MMP-9 and ICAM-1 were detected by real time PCR,the protein expression levels of above indexes were detected by western blotting and immunofluorescence combined with confocal laser microscopy.Results The specific siRNA could inhibit the expression of MMP-2 and MMP-9 in HKCs effectively.Immunofluorescence combined with confocal assay demonstrated that while HKCs was stimulated with PMA,the expression of ICAM-1 was up-regulated,which was significantly up-regulated in the group transfected with MMP-9 siRNA(P0.05).Conclusions The inhibitory expression of MMP-9 of HKC may up-regulate the expression of ICAM-1,implying that,besides taking part in the degradation of extracellular matrix,MMP-9 may throw an influence on the proceeding of renal fibrosis by inflammatory pathway.
4.Regulatory effects of IFN-γ on Treg cells from HIV/AIDS patients receiving HAART for one year
Quan ZHANG ; Yunhai YAO ; Yan HE ; Quan ZHOU ; Yuhuang ZHENG ; Si ZENG
Chinese Journal of Microbiology and Immunology 2014;34(1):15-18
Objective To investigate the regulatory effects of IFN-γon Treg cells from HIV/AIDS patients receiving highly active antiretroviral therapy (HAART) for one year.Methods Thirty HIV/A1DS patients whose CD4+T cells were below 350/μ1 were recruited for HAART therapy.Blood samples were collected at the time points of 0,24,48 weeks after HAART.PBMCs were isolated and randomly divided into two culture groups.One group was cultured directly in medium and another group was co-cultured with IFN-γ (40 pg/ml).The supernatants and cells were separated after 5 days of culture for analysis.The concentrations of IL-12 and CD4+CD25+Foxp3 Treg cells were measured by ELISA and flow cytometry,respectively.Results The levels of IL-12 in the supernatants from the culture without IFN-γ at time points of 0,24,48 weeks after HAART were lower than those from the co-cultured group [(37.02±12.76) vs (41.79± 15.02),t=2.336,P=0.03; (41.76±17.01) vs (47.2±14.26),t=2.702,P=0.014; (48.01± 11.84) vs (53.44± 11.30),t =3.14,P =0.003].The percentages of CD4+ CD25 + Foxp3 Treg cells in CD4+ T cells from the direct-cultured group were higher than those from the co-cultured group at the three time points [(10.41±1.10)% vs (2.40±1.11)%,t=13.89,P=0.000; (8.33±2.03)% vs (1.99± 0.86)%,t=12.93,P=0.000; (5.65±1.55)% vs (1.32±0.73)%,t=10.61,P=0.000].Moreover,the results within the same group at the time points of 0,24,48 weeks upon HAART were also significantly different.Conclusion With the interference of HAART,IL-12 levels were increased,while CD4+CD25+ Foxp3 Treg cells were decreased in patients with HIV/AIDS.IFN-γ plays an important role in this process.
5.The Correlation of ACE I/D Gene Polymorphisms with the Antihypertensive Efficacy of Irbesartan Among Hypertensive Patients
Hong HUANG ; Bo CHEN ; Yan LI ; Shenglin QUAN ; Linqing TANG ; Tong ZHANG ; Jing QUAN
Journal of Kunming Medical University 2016;37(7):40-43
Objective To analyze the correlationship of ACE I/D gene polymerphisms with the anti-hypertensive efficacy of irbesartan among essential hypertension (EH) patients in Yunnan han people.Methods One hundred EH patients hypertension were treated with irbesartan 150mg once daily for 4 weeks,and anti-hypertensive efficacy were monitored during the treatment.Results There was a significant difference between anti-hypertensive efficacy of irbesartan among different genotype groups,DD group >ID group >Ⅱ group (P < 0.05) Conclusions There is different therapy responsiveness in diffenent genotypes.ACE I/D polymorphism may be an important hereditary factor that impacts the efficacy of irbesartan.
6.Study on alarming model based on control chart method for hand,foot and mouth disease in Wuchang District of Wuhan City
Juan YANG ; Hong YAN ; Jiao RUAN ; Hao ZHANG ; Yongxia QUAN
Chongqing Medicine 2017;46(22):3101-3102,3105
Objective To establish the early warning model based on the control chart method for hand,foot and mouth disease (HFMD) in Wuchang District and to determine the optimum alarming threshold to provide the data support for HFMD monitoring work.Methods The data of HFMD in Wuchang District during 2009-2014 were collected from the National Infectious Diseases Notification System for constructing the data base.The mobile percentile method was adopted to establish the early alarming model,which was evaluated by the screening test.The sensitivity,specificity,positive predictive value and negative predictive value were calculated.Then the receiver operating characteristic (ROC) curve was drawn and the optimum alarming threshold was found out.Results The early alarming threshold of HFMD in Wuchang District was P90,its sensitivity,specificity,positive predictive value and negative predictive value were 75.00%,93.88%,50.00% and 97.87%,respectively.Conclusion Determining the early warning threshold should be optimized according to onset characteristics combining with the local epidemic situation,which pays attention to regional specificity and increases the monitoring ability of infectious diseases.
7.Influence of comprehensive nursing intervention on clinical effect of patients with non-invasive mechanical ventilation with BiPAP mode
Yan LU ; Caijun WU ; Jingyu QUAN ; Yajuan DONG ; Yu ZHANG
Chinese Journal of Practical Nursing 2008;24(23):16-18
ObjectiveTo investigate the treatment effects of comprehensive nursing intervention on patients with chronic obstructive pulmonary disease(COPD) treated by non-invasive mechanical ventilation with BiPAP mode.Methods96 patients with diagnosed COPD and using non-invasive mechanical ven- tilation with BiPAP mode were randomly divided into the control group(46 cases) which was treated with routine measures and the comprehensive nursing intervention group (50 cases) which adopted comprehen- sive nursing intervention according to experimental design. The frightening degree, incidence rate of com- plications and clinical treatment effect by ventilator were compared between the two groups.ResultsPa- tients compliance with treatment and clinical treatment effect by ventilator in the comprehensive nursing in- tervention group was better than that of the control group. The frightening degree and incidence rate ofcomplications were lower than those of the control group (P < 0.01 ).ConclusionsComprehensive nurs-ing intervention with non-invasive mechanical ventilation with BiPAP mode can improve the treatmentcompliance of COPD patients,reduce complications followed by non-invasive mechanical ventilation andreach the prospective treatment effect.
8.Association of secretory IgA with clinical pathological characteristics and complement activation in IgA nephropathy
Junjun ZHANG ; Yan LIANG ; Songxia QUAN ; Guizhen YU ; Zhangsuo LIU
Chinese Journal of Nephrology 2016;32(4):247-252
Objective To further investigate the association among clinical pathology,complement activation and renal secretory IgA (SIgA) deposition in patients with IgA nephropathy (IgAN).Methods The activation of serum complements were detected by immunoturbidimetry and ELISA.Renal deposition of SIgA and activation of complements were detected by immunofluorescence.Then the association among clinical pathology,complement activation and renal SIgA deposition were analyzed in IgAN patients.Results In all 201 patients with IgAN,59 patients had SIgA deposition with higher incidences of mucosal infection history and hematuria (P < 0.05),lower levels of serum cystatin C,β2 microglobulin and lower tubulointerstitial lesion grades and T-grade in the Oxford classification (P < 0.05),when compared with patients without SIgA deposition.Both alternative and mannose binding lectin (MBL) pathways were activated in patients with or without SIgA deposition.Patients with MBL pathway activation had lower estimate glomerular filtration rate (P < 0.01),higher serum creatinine,higher proportion of glomerulosclerosis and S-grade in the Oxford classification,more severe tubulointerstitial lesion (P < 0.05).Conclusions Compared with patients without SIgA deposition,patients with SIgA deposition have a stronger link to mucosal immune.The deposition of SIgA is associated with different clinical and pathological manifestations;however,the complement activation is similar in both groups of patients.Patients with MBL pathway activation show more severe kidney injury.
9.Comparison of the quantitative evaluation in high-resolution CT and pulmonary function tests in chronic obstructive pulmonary disease
Chaoqun YAN ; Pan ZHANG ; Da SHI ; Xinming LI ; Xianyue QUAN
The Journal of Practical Medicine 2016;32(8):1258-1261
Objective To analyze the correlation between quantitative evaluation of high-resolution CT (HRCT) and pulmonary function tests (PFT) in chronic obstructive pulmonary disease (COPD), and evaluate the characteristics of PFT in different CT phenotypes of COPD. Methods 65 patients with COPD underwent CT chest scan and PFT. The dimensions of subsubsegmental apical bronchi of right upper lobes were measured , which included the following parameters:airway wall thickness (T), total airway diameter (D), and pulmonary artery (PA), ratio of airway wall thickness and pulmonary artery (T/PA), thickness diameter ratio (TDR), percentage of wall area (WA%) and percentage of airway luminal area (Ai%). The percentage of total lung area occupied by low attenuation area (LAA%) was measured by lung density software. The relationship between the measurements and PFT parameters were analyzed. Patients were classified into three phenotypes based on the presence of emphysema or bronchial wall thickening evaluated by HRCT. Phenotype A: without or with little emphysema (LAA% < 25%), with or without bronchial wall thickening; Phenotype E: emphysema without bronchial wall thickening (LAA%≥25%, T/PA < 30%); Phenotype M: emphysema with bronchial wall thickening (LAA%≥25%, T/PA≥30%). The characteristics of different CT phenotypes were analyzed. Results LAA% had a good correlation with PFT parameters. PA, T/PA, WA% and Ai% also had correlation with PFT parameters. There was 53 patients of Phenotype A, 12 patients of Phenotype M. PA, T/PA, LAA%and PFT were different in two groups. Conclusions LAA%and airway quantitative measurements in HRCT have certain correlation with PFT parameters. Patients with different CT phenotypes differs in PFT parameters , which can provide reference for clinical diagnosis and treatment.
10.Protein Fold Recognition With Support Vector Machines Fusion Network
Jianyu SHI ; Quan PAN ; Shaowu ZHANG ; Yan LIANG
Progress in Biochemistry and Biophysics 2006;0(02):-
One of the important approaches to structure analysis is protein fold recognition, which is oftenapplied when there is no significant sequence similarity between structurally similar proteins. A framework with athree-layer support vector machines fusion network (SFN) is presented. The framework is applied to 27-classprotein fold recognition from primary structure of proteins. SFN uses support vector machines as memberclassifiers, and adopts All-Versus-All as multi-class categorization. Six groups of features are divided into majorand minor ones by SFN, and several diversity fusion schemes are correspondingly built. The final decision is madeby dynamic selection of the results of all fusion schemes. When it is still difficult to know what kind of fusion offeature groups can achieve good prediction,SFN is a dependable solution by selecting the optimal fusion offeature groups automatically, which can ensure the best recognition. Overall recognition system achieves 61.04%fold prediction accuracy on the independent test dataset. The results and the comparison with other approachesdemonstrate the effectiveness of SFN, and thus encourage its further exploration.