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Wei-Ke Kuo,1 Yu-Chih Liu,1,2 Chien-Ming Chu,1 Chung-Ching Hua,1,2 Chih-Yu Huang,1 Min-Hui Liu,2,3 Chao-Hung Wang2,3 1Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan; 2Chang Gung University, College of Medicine, Taoyuan, Taiwan; 3Heart Failure Research Center, Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung, TaiwanCorrespondence: Chao-Hung WangHeart Failure Research Center, Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, No. 222, Maijin Road, Anle District, Keelung City 204, TaiwanTel +886-2-24313131 ext 2245Fax +886-2-24335342Email bearty54@gmail.comBackground: The BODE index is a multidimensional grading system for predicting the prognoses of patients with chronic obstructive pulmonary disease (COPD). This study investigated whether an amino acids-based metabolic profile developed for heart failure patients (including histidine, ornithine, phenylalanine, and leucine) could identify COPD patients and further discriminates COPD patients in advanced BODE stages.Methods: Ultra-performance liquid chromatography was performed on 119 participants, including 75 COPD patients at different BODE stages and 44 normal controls. Albumin, pre-albumin, transferrin, high sensitivity C-reactive protein, and hand grip strength were also measured. Receiver operating characteristic curves and area under curves were used for estimation.Results: The BODE points in our patients were 3.29 [95% confidence interval (CI) = 2.74–3.85]. Compared to normal controls, COPD patients had lower leucine but higher ornithine levels. A COPD score, developed based on leucine and ornithine, significantly discriminated COPD from normal controls [odds ratio (OR) = 2.71, 95% CI = 1.83–4.04, p |
