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Objective To establish diagnosis model and explore related metabolic pathways by analyzing the serum metabolic profile of patients with primary nephrotic syndrome (PNS) through metabolomics.Methods Thirty PNS patients hospitalized in Huai'an First People's Hospital between December 2010 and April 2012 were enrolled.High performance liquid chromatography-mass spectrometry (LC-MS) was employed to detect metabolites in the serum of 30 PNS patients and 30 healthy controls.Metabolic fingerprint profiling and multivariate pattern recognition analysis were combined to establish disease-specific metabolic diagnosis model,and metabolic pathway analysis was performed.Results PNS group and control group could be well separated by principal component analysis (PCA) model as well as partial least-squares discriminant analysis (PLS-DA) model with Q2 of 0.300.There was well interpretation in PLA-DA model (R2X=0.581,R2Y=0.452).Compared with healthy controls,PNS patients had decreased cholestane 3,7,12,15 alcohol,acyl glycerine,phytosphingosine and tryptophan,and increased sphingomyelin,arginine and glutamic acid (all VIP ＞ 1,P ＜ 0.05).The metabolic disorders pathways of PNS patients included sphingolipid metabolism,arginine and proline metabolism,linoleic acid metabolism and pyrimidine metabolism (all impact ＞0.10 and P ＜ 0.05).Conclusions Metabolomics combined with multivariate pattern recognition analysis may be a new tool for diagnosis and monitoring of PNS.
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Objective The metabolomics methods were applied to discover the serum differences metabolites in patients with lupus nephritis (LN),and to establish the diagnostic model and study the metabolic pathways change due to the interference of LN and explore the pathogenesis of LN.Methods Positive and negative ions mode of ultra high performance liquid chromatography-high resolution mass spectrometry (HPLS-HRMS) were used to analyze the serum samples of 38 LN patients and 35 healthy controls,respectively.Both univariate and multivariate data analysis were performed with SPSS software (V17.0,Chicago,USA) and SIMCA-P+ package (V12.0,Umetrics,Sweden),respectively.A supervised pattern recognition method,orthogonal partial least squares-discriminant analysis (OPLS-DA),was employed to study the metabolomics differences between control group and LN patients group.The metabolic pathways were analyzed by Metabo Analyst 3.0.Results LN patients and healthy controls could be well separated by OPLS-DA model Q2 of 0.583.Eighteen compounds (theophylline,oxidized glutathione,capric acid,norvaline,hippuric acid,sphingosine,sorbitol,cortisol,pyrrole-2-carboxylic acid,deoxycholic acid,tryptamine,5-aminolevulinic acid,glucose 6-phosphate,riboflavin,cortisone,taurine,creatinine,glycerophosphocholine) were initially identified as potential serum metabolic markers to distinguish LN patients from healthy people.Alternated metabolism pathways included citrate metabolism,pyrimidine metabolism and amino acid metabolism.Conclusion Through analysis of the metabolic pathways of different metabolites,the significant impact of LN on citrate metabolism,pyrimidine metabolism and amino acid metabolism pathways are identified.Some of the different metabolites are involved in the process of immunization.These results will benefit the early intervention and treatment of LN and the research of the mechanism of pathogenesis.
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ObjectiveTo investigate the correlation between the level of resistin and the insulin resistance(IR) and the incorporation of microamount albuminuria(MA) of type 2 diabetes mellitus (T2DM).MethodsTwo hundred and twenty T2DM patients and 40 normal subjects (control group) were enrolled in this study.Two hundred and twenty T2DM patients were divided into 4 groups,IR group (group A,79 cases),non-IR group (group B,48 cases),IR complicating MA group (group C,51 cases),non-IR complicating MA group(group D,42 cases).The fasting serum resistin was measured by enzyme-linked immunosorbant assay (ELISA),and the fasting plasma glucose (FPG),glycosylated hemoglobin (HbA1c),fasting insulin (FINS) was also determined.ResultsThe level of fasting serum resistin in group A,B,C and D was higher than that in control group [(33.45 ± 1.37),(23.36 ± 1.47),(44.45 ± 1.39),(37.45 ±1.57) μ g/L vs.( 17.44 ± 1.26 ) μ g/L],and there was significant difference among 5 groups (P ＜ 0.01 ).The level of fasting serum resistin in group A was higher than that in group B (P ＜ 0.01 ),and the level of fasting serum resistin in group C was higher than that in group D (P ＜ 0.01 ).The level of fasting serum resistin was both higher in group C and D than that in goup A and B (P＜ 0.01 ).Correlation analysis showed the fasting serum resistin was positively correlated with body mass index(BMI),FPG,HbA1c and FINS in group A(r =0.35,0.46,0.37,0.49,P ＜0.05),and the fasting serum resistin was positively correlated with HbA1c,BMI,systolic blood pressure and diastolic blood pressure in group C(r =0.45,0.32,0.37,0.29,P ＜ 0.05 ).ConclusionsSerum resistin may participate in the process of IR and the formation of MA.It may become one of the diagnostic standard of the IR and one of the important index to estimate the MA.
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One hundred patients with chronic renal failure(CRF) undergoing contrast diagnosis and/or interventional therapy were randomly divided into two groups: patients in hydration alone group( n = 49 )received intravenous infusion of 0.9% sodium chloride 12 h before injection of contrast media till 12 h after examination (hydration), patients in atorvastatin plus hydration group (n = 51 ) received atorvastatin 80mg/d 24 h before examintion for 3 d in addition to hydration.The serum creatinine concentrations were measured before and 48 h after injection of contrast media.In atorvastatin plus hydration group, the incidence rate of contrast-induced nephropathy (CIN) was 8% (4/51), which was significantly lower than that of hydration group (24%,12/49 )(P＜0.05).Short-term and large dose administration of atorvastatin plus hydration can decrease the incidence of CIN in patients with chronic renal failure undergoing contrast diagnosis and/or interventional thrapy.
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Objective To investigate the clinical outcomes on implantation of hydroxyapatite orbit after scleral flap especially in the cosmetic results. Methods Implant hydroxyapatite orbital after scleral flap for the treatment of all kinds of patients who should be enucleated, including 14 cases of eyeball atrophy, 5 cases of sclerocorneal staphyloma, 3 cases of absolute glaucoma, 3 cases of neovaseular glaucoma and 7 cases of eyeball rupture. Results We observed that the orbit was full and the orbital movement was smooth in all cases. After 3 to 12 months follow-up we found that no hydroxyapatite exposed or moved. Conclusion Good cosmetic results can be achieved by the implantation of hydroxyapatite orbit after scleral flap.