Oxidative phosphorylation in creatine transporter deficiency
NMR IN BIOMEDICINE(2021)
Abstract
X-linked creatine transporter deficiency (CTD) is one of the three types of cerebral creatine deficiency disorders. CTD arises from pathogenic variants in the X-linked geneSLC6A8.We report the first phosphorus (P-31) MRS study of patients with CTD, where both phosphocreatine and total creatine concentrations were found to be markedly reduced. Despite the diminished role of creatine and phosphocreatine in oxidative phosphorylation in CTD, we found no elevation of lactate or lowered pH, indicating that the brain energy supply still largely relied on oxidative metabolism. Our results suggest that mitochondrial function is a potential therapeutic target for CTD.
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Key words
H-1 MRS,P-31 MRS,creatine,creatine transporter deficiency
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