Abstract
Artificial liver support systems (ALSSs) are important approaches for treating acute-on-chronic liver failure (ACLF) patients. Few studies have investigated potential serum therapeutic markers of ACLF patients treated by ALSSs. Serum samples were obtained from 57 early to middle stage ACLF patients before and after ALSSs treatment and analyzed by metabonomics. The diagnostic values were evaluated by the area under receiver-operating characteristic curve (AUROC). A retrospective cohort analysis was further employed. Metabonomic study showed that serum ratios of lactate: creatinine in ACLF patients is significantly altered and then restored to normal levels after ALSSs treatment. A retrospective cohort analysis (n = 47) validated that the lactate: creatinine ratio of ACLF patients in the one-month death group remained unchanged after ALSSs treatment, but fell markedly in the survival group with AUROC of 0.682 for diagnosis of survival group from death group, which is a more sensitive measure than measures of prothrombin time activity (PTA) to evaluate the therapeutic effect of ALSSs treatment. Our results demonstrated the greater the decline in the serum lactate: creatinine ratio with better effective treatments of ALSSs in the ACLF patients with early to middle stage, which presents a potential therapeutic biomarker of ALSSs treatment.
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