TY - JOUR T1 - Discrimination of sepsis stage metabolic profiles with an LC/MS-MS-based metabolomics approach JF - BMJ Open Respiratory Research JO - BMJ Open Resp Res DO - 10.1136/bmjresp-2014-000056 VL - 1 IS - 1 SP - e000056 AU - Longxiang Su AU - Yingyu Huang AU - Ying Zhu AU - Lei Xia AU - Rentao Wang AU - Kun Xiao AU - Huijuan Wang AU - Peng Yan AU - Bo Wen AU - Lichao Cao AU - Nan Meng AU - Hemi Luan AU - Changting Liu AU - Xin Li AU - Lixin Xie Y1 - 2014/12/01 UR - http://bmjopenrespres.bmj.com/content/1/1/e000056.abstract N2 - Background To identify metabolic biomarkers that can be used to differentiate sepsis from systemic inflammatory response syndrome (SIRS), assess severity and predict outcomes. Methods 65 patients were involved in this study, including 35 patients with sepsis, 15 patients with SIRS and 15 normal patients. Small metabolites that were present in patient serum samples were measured by liquid chromatography mass spectrometry techniques and analysed using multivariate statistical methods. Results The metabolic profiling of normal patients and patients with SIRS or sepsis was markedly different. A significant decrease in the levels of lactitol dehydrate and S-phenyl-d-cysteine and an increase in the levels of S-(3-methylbutanoyl)-dihydrolipoamide-E and N-nonanoyl glycine were observed in patients with sepsis in comparison to patients with SIRS (p<0.05). Patients with severe sepsis and septic shock displayed lower levels of glyceryl-phosphoryl-ethanolamine, Ne, Ne dimethyllysine, phenylacetamide and d-cysteine (p<0.05) in their sera. The profiles of patients with sepsis 48 h before death illustrated an obvious state of metabolic disorder, such that S-(3-methylbutanoyl)-dihydrolipoamide-E, phosphatidylglycerol (22:2 (13Z, 16Z)/0:0), glycerophosphocholine and S-succinyl glutathione were significantly decreased (p<0.05). The receiver operating characteristic curve of the differential expression of these metabolites was also performed. Conclusions The body produces significant evidence of metabolic disorder during SIRS or sepsis. Seven metabolites may potentially be used to diagnose sepsis. Trial registration number ClinicalTrial.gov identifier NCT01649440. ER -