The effect of succinate on brain NADH/NAD⁺ redox state and high energy phosphate metabolism in acute traumatic brain injury.

ABSTRACT: A key pathophysiological process and therapeutic target in the critical early post-injury period of traumatic brain injury (TBI) is cell mitochondrial dysfunction; characterised by elevation of brain lactate/pyruvate (L/P) ratio in the absence of hypoxia. We previously showed that succinate can improve brain extracellular chemistry in acute TBI, but it was not clear if this translates to a change in downstream energy metabolism. We studied the effect of microdialysis-delivered succinate on brain energy state (phosphocreatine/ATP ratio (PCr/ATP)) with ³¹P MRS at 3T, and tissue NADH/NAD⁺ redox state using microdialysis (L/P ratio) in eight patients with acute major TBI (mean 7 days). Succinate perfusion was associated with increased extracellular pyruvate (+26%, p < 0.0

SUBMITTER: Stovell MG 

PROVIDER: S-EPMC6057963 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature