Journal Article

A New Metabolomic Signature in Type-2 Diabetes Mellitus and Its Pathophysiology

Liebenberg, Volker, Peter, Erik, Rein, Dietrich, Padberg, Inken, González-Maldonado, Sandra, Mueller, Matthias, Katus, Hugo A., Weis, Tanja, Bethan, Bianca, Schatz, Philipp, Wiemer, Jan, Witt, Henning

2014

Overview

The objective of the current study was to find a metabolic signature associated with the early manifestations of type-2 diabetes mellitus. Modern metabolic profiling technology (MxP™ Broad Profiling) was applied to find early alterations in the plasma metabolome of type-2 diabetic patients. The results were validated in an independent study. Eicosanoid and single inon monitoring analysis (MxP™ Eicosanoid and MxP™ SIM analysis) were performed in subsets of samples. A metabolic signature including significantly increased levels of glyoxylate as a potential novel marker for early detection of type-2 diabetes mellitus was identified in an initial study (Study1). The signature was significantly altered in fasted diabetic and pre-diabetic subjects and in non-fasted subjects up to three years prior to the diagnosis of type-2 diabetes; most alterations were also consistently found in an independent patient group (Study 2). In Study 2 diabetic and most control subjects suffered from heart failure. In Study 1 a subgroup of diabetic subjects, with a history of use of anti-hypertensive medication further showed a more pronounced increase of glyoxylate levels, compared to a non-diabetic control group when tested in a hyperglycemic state. In the context of a prior history of anti-hypertensive medication, alterations in hexosamine and eicosanoid levels were also found. A metabolic signature including glyoxylate was associated with type-2 diabetes mellitus, independent of the fasting status and of occurrence of another major disease. The same signature was also found to be associated with pre-diabetic subjects. Glyoxylate levels further showed a specifically strong increase in a subgroup of diabetic subjects. It could represent a new marker for the detection of medical subgroups of diabetic subjects.

• Publisher: Public Library of Science,Public Library of Science (PLoS)
• Subject: Amino Acids, Branched-Chain - metabolism / Analysis / Antihypertensive Agents - therapeutic use / Antihypertensives / Biology / Biomarkers / Blood & organ donations / Blood pressure / Case-Control Studies / Chemistry / Chromatography / Diabetes / Diabetes mellitus / Diabetes Mellitus, Type 2 - drug therapy / Diabetes Mellitus, Type 2 - metabolism / Diabetes Mellitus, Type 2 - physiopathology / Diabetics / Drugs / Eicosanoids - metabolism / Fasting - metabolism / Glucose / Glucose Tolerance Test / Glyoxylates - metabolism / Heart / Heart diseases / Hexosamines - metabolism / Humans / Hyperglycemia / Hypertension / Independent study / Insulin resistance / Internal medicine / Medical diagnosis / Medical research / Medicine / Metabolism / Metabolites / Metabolomics / Models, Biological / Prediabetic state / Prediabetic State - metabolism / Research design / Sleep / Studies / Subgroups / Type 2 diabetes