2- Deoxy–D-Glucose (2-DG) is being developed as a potential anticonvulsant and disease-modifying agent for epilepsy patients; however, during preclinical development, cardiac toxicity has been encountered in rats. This study was performed to determine whether cardiac troponin (cTnI and cTnT), Atrial Natriuretic Peptide (ANP), Brain Natriuretic Peptide (BNP), N-terminal pro-brain natriuretic peptide (NT-proBNP) and/or creatine kinase (CK) could be useful as indicators of 2-deoxy-D-glucose (2-DG) cardiac toxicity. In addition, this study also investigated the association of cardiac histopathological changes with these biomarkers. F344 rats (four/sex/group/sacrifice point) were gavaged with either vehicle or 2-DG (50, 125, or 375 mg/kg BID; total daily dose of 100, 250 or 750 mg/kg/day) for 7, 14, 21, or 45 days followed by a 15 day recovery. Dose dependent increases in NT pro-BNP and BNP plasma concentrations were observed. Following recovery period, the NT pro-BNP and BNP concentrations returned to baseline levels. There were no remarkable increases in CK, ANP, cTnI, or cTnT concentrations. There were no gross cardiac lesions observed at the necropsy. Microscopic findings of vacuolar degeneration and hypertrophy of the endothelial cells of the endocardium were present in the heart at doses of 250 and 750 mg/kg/day. Microscopic findings, in general, were associated with increases in NT pro-BNP levels. Cardiac toxicity appeared to be reversible. In conclusion, NT-proBNP and BNP are potential early biomarkers for 2-DG induced cardiac toxicity that can be useful to monitor 2-DG therapy in clinical trials.

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2016-11-02T18:49:00