1.Study on application of serum anti-phospholipase A2 receptor antibodies detection by ELISA in membranous nephropathy
Ling FANG ; Xiangming GU ; Zehong ZHOU ; Miaoxiong LIN ; Xiaoyun QI
International Journal of Laboratory Medicine 2017;38(4):450-451,454
Objective To explore the titre of serum anti-phospholipase A2 receptor antibodies (anti-PLA2 R antibodies) detected by the enzyme-linked immunosorbent assay (ELISA) to provide a more specific serological index for clinical diagnosis and disease judgment of membranous nephropathy (MN).Methods Thirty-four cases of MN confirmed by kidney biopsy ,32 inpatients with autoimmune diseases ,nephrotic syndrome and renal insufficiency in the nephrology department of our hospital and 12 persons un-dergoing physical examination were selected.The serum was collected for detecting anti-PLA2 R antibodies level.Then its diagnostic performance for diagnosing MM was analyzed by combining with serum TP ,ALB ,IgG ,IgA ,IgM ,C3 and C4 indicators.Results The medians of anti-PLA2 R antibodies titres in the MN group ,disease control group and healthy control group were 22.1 ,2.0 ,2.0 RU/mL respectively ,which had statistical difference between the MN group and other two groups (P<0.05).Seventeen cases of anti-PLA2R antibodies positive were in the MN group(positive rate50% )and 17 cases were negative,the disease control group and healthy control group all were negative.Its specificity and positive predictive value were 100% ,TP ,ALB and IgG had statistical difference between the MN group with the disease control group and healthy control group (P<0.05);the relative coefficients of anti-PLA2 R antibodies with TP ,ALB and IgG ,IgA ,IgM ,C3 and C4 were in turn -0.382 ,-0.344 ,-0.502 ,-0.295 ,0.062 , 0.005 and 0.241 respectively ,anti-PLA2R antibodies were negatively correlated with TP ,ALB ,IgG and IgA(P<0.01) ,positively correlated with C4(P<0.05) and had no relation with IgM and C3(P>0.05).Conclusion Anti-PLA2 R antibodies have higher specificity for the diagnosis of MN and can serve as the necessary and specific serologic detection indicator in the patients unable to conduct renal biopsy.Quantitative detection helps to condition judgment.
2.Evaluation of markers and perfusion parameters in donated liver quality during machine perfusion
Zehong FANG ; Xiaoyan HU ; Yanfeng WANG ; Qifa YE
Chinese Journal of Hepatobiliary Surgery 2017;23(1):63-67
Liver transplantation has become the most effective treatment option for end-stage liver diseases.The liver donation after cardiac death (DCD) had been increasingly used in clinical practice.Nevertheless,the DCD donated livers inevitably exposed to long-term ischemia and hypoxia makes the implanted organs with decreased function and more postoperative complications.Different from the conventional static cold storage,machine perfusion (MP) can be continuously used in vitro liver perfusion,which could simulate the in vivo liver status.Through the observation of ischemia injury status,we could evaluate the quality of donated liver,and thus reduce ischemia related complications.This review provides an overview and evaluation on the markers that have been investigated for the assessment of graft quality and viability testing during different types of MP.
3.Donor ischaemic preconditioning in liver transplantation: A systematic review and meta-analysis
Xingjian ZHANG ; Zhongzhong LIU ; Qi XIAO ; Zehong FANG ; Qifa YE ; Yanfeng WANG ; Yan XIONG
Chinese Journal of Hepatobiliary Surgery 2017;23(3):149-153
Objective To systematically review the effect of donor ischaemic preconditioning in liver transplantation.Methods Databases including the Cochrane Library,PubMed,EMbase,CNKI,VIP and WanFang database were searched up to June 2016 for studies which involved donor ischaemic preconditioning (IPC) in liver transplantation.The data retrieved included 1-year mortality,incidence of Primary Graft Non-Functioning (PGNF),intensive therapy unit (ICU) hospitalization and liver function tests which were used to evaluate the treatment outcomes.The data were analyzed using both the fixed-effect and the random-effects models.For categorical outcomes,risk ratio (RR) with 95% confidence intervals (CI) were calculated.For continuous outcomes,the mean difference (MD) with 95% CI were calculated.The metaanalysis was performed using Review Manager 5.2 software.Results Six clinical studies with 322 patients were qualified for this meta-analysis.There were no significant differences in the 1-year mortality (OR =0.51,95% CI 0.24 ~ 1.05,P > 0.05),PGNF (OR =0.33,95% CI 0.08 ~ 1.40,P > 0.05) and ICU hospitalization (OR =-0.17,95 % CI-2.72 ~ 2.38,P > 0.05) between the donor ischaemic preconditioning and the control groups.There were also no significant differences in the transaminase and bilirubin levels on postoperative day 1,3 and 7 between the two groups.Conclusion There is currently not enough evidence in evidenced based medicine to recommend the routine use of ischaemic preconditioning in donor liver retrieval.
4.Impacts of LASP-1 on osteogenic moving behavior and distribution of cell cycle of osteoblasts derived from different soue
Fang JIA ; Chunhua LAI ; Zhen ZHOU ; Yan GAO ; Zehong GUO ; Shulan XU
The Journal of Practical Medicine 2018;34(9):1428-1434
Objective To investigate the impacts of LASP-1 on the behavior and cell proliferation ability of tumor derived osteoblast-like cells and non tumor derived osteoblasts. Methods QRT-PCR and Western blot were performed to detect LASP-1 expressions in mouse bone marrow mesenchymal stem cells(BMMSC),human osteoblasts (hOB) and human osteosarcoma cell (MG-63). With the construction of recombinant vector and the transfection of shLASP-1,the expression changes in both LASP-1 and osteocalcin(OCN),and the cell number of cell-cycle phase distribution were analyzed. Results With up-or down-regulation of LASP-1,osteocalcin(OCN) expression,cell proliferation ability and the cell number of G2/M phase in non tumor cells(BMMSC,hOB)had no obvious changes. However,as for the tumor cells(MG-63),with an increased expression of LASP-1,the expression of OCN,cell proliferation number and the cell number at G2/M phase changed. There was no significant effect on the moving ability of each cell. Conclusions LASP-1 has no significant effect on the osteogenic proper-ties,cell proliferation ability and cell cycle distribution of non tumor derived cells,but has a regulatory effect on tumor derived cells(MG-63).
5.Research progress on machine perfusion to reduce the incidence of non-anastomotic biliary stricture after liver trans-plantation
Zehong FANG ; Xianpeng ZENG ; Zhijian YANG ; Qifa YE ; Yanfeng WANG
Chinese Journal of Hepatobiliary Surgery 2018;24(5):352-355
Liver transplantation has become the most effective treatment for end-stage liver diseases.Due to the shortage of organ,more and more extended criteria donors (ECD) grafts had been used,which expand the liver pool.However,a series of complications post transplantation were caused by ischemia,hypoxia,steatosis and so on.The non-anastomotic biliary strictures after liver transplantation is one of the major complications when the ECD donors was be used in clinic.The study on the protective effect of machine perfusion on liver donors is too numerous to list,and existing studies have found that MP can reduce the incidence of NAS after liver transplantation.This review provides an overview of the pathogenesis of NAS and the reduction incidence of NAS by MP.