National Changhua University of Education Institutional Repository : Item 987654321/12043
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 6491/11663
造訪人次 : 24625397      線上人數 : 63
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋


題名: Multiplexed Analysis of Biomarkers Related to Obesity and the Metabolic Syndrome in Human Plasma, Using the Luminex-100 System
作者: Liu, Mine-Yine;Xydakis, Antonios M.;Hoogeveen, Ron C.;Jones, Peter H.;Smith, E. O’Brian;Nelson, Kathleen W.;Ballantyne, Christie M.
貢獻者: 化學系
日期: 2005
上傳時間: 2012-07-03T03:29:38Z
出版者: American Association for Clinical Chemistry, Inc.
摘要: Section of Atherosclerosis, Department of Medicine, 2 Division of Endocrinology, Diabetes and Metabolism, and 3 Section of Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, TX.
4 Methodist Wellness Services, The Methodist Hospital, Houston, TX.
aAddress correspondence to this author at: Baylor College of Medicine, 6565 Fannin, M.S. A-601, Houston, TX 77030. Fax 713-798-3057; e-mail
Background: The complex pathology of disease has sparked the development of novel protein expression profiling techniques that require validation in clinical settings. This study focuses on multiplexed analyses of adipocytokines and biomarkers linked to the metabolic syndrome, diabetes, and cardiovascular disease.
Methods: Multiplexed immunoassays using fluorescent microspheres and the Luminex-100 system were performed on plasma from 80 obese patients (40 with the metabolic syndrome) before and after 6–8 weeks of diet-induced weight loss. Leptin, insulin, C-peptide, monocyte chemoattractant protein-1 (MCP-1), eotaxin, interleukin-8 (IL-8), tumor necrosis factor- (TNF-), and IL-6 concentrations measured with multiplex panels from 3 different manufacturers were compared with results from commercial ELISAs. Detection limits and between- and within-run imprecision were determined for each analyte. Bland–Altman analysis was used to determine agreement between multiplexed immunoassays and ELISAs.
Results: Correlation between the Luminex multiplexed assays and ELISAs was good for leptin (Linco), insulin (Linco), MCP-1 (Biosource and Upstate), and eotaxin (Biosource) with correlation coefficients of 0.711–0.895; fair for eotaxin (Upstate) and C-peptide (Linco) with correlation coefficients of 0.496–0.582; and poor for TNF-, IL-8, and IL-6 (Linco, Biosource, Upstate, and R&D) with correlation coefficients of –0.107 to 0.318. Within- and between-run imprecision values for the multiplex method were generally <15%. Relative changes in plasma leptin and insulin concentrations after diet-induced weight loss were similar whether assessed by multiplex assay or ELISA.
Conclusion: Although this technology appears useful in clinical research studies, low assay sensitivity and poor correlations with conventional ELISA methods for some analytes with very low plasma concentrations should be considered when using the Luminex platform in clinical studies.
關聯: Clinical Chemistry, 51(7): 1102-1109
顯示於類別:[化學系] 期刊論文


檔案 大小格式瀏覽次數



DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋