期刊
BRAIN
卷 132, 期 -, 页码 3274-3284出版社
OXFORD UNIV PRESS
DOI: 10.1093/brain/awp259
关键词
2-[F-18]fluoro-2-deoxyglucose; oxygen; positron emission tomography; magnetic resonance spectroscopy; mitochondrial encephalomyopathy
资金
- Academy of Finland
- University of Turku
- Turku University Hospital
- Abo Akademi University
- Finnish Diabetes Foundation
- Sigrid Juselius Foundation
The m.3243A > G mutation is the most common pathogenic mutation in mitochondrial DNA. It leads to defective oxidative phosphorylation, decreased oxygen consumption and increased glucose utilization and lactate production in vitro. However, oxygen and glucose metabolism has not been studied in the brain of patients harbouring the m.3243A > G mutation. Therefore, 14 patients with the m.3243A > G mutation, not experiencing acute stroke-like episodes and 14 age-matched controls underwent positron emission tomography using 2-[F-18]fluoro-2-deoxyglucose, [O-15]H2O and [O-15]O-2 as the tracers during normoglycaemia. The metabolic rate of oxygen and glucose were determined using a quantitative region of interest analysis. Metabolites in unaffected periventricular tissue were measured using magnetic resonance spectroscopy. We found that the cerebral metabolic rate of oxygen was decreased by 26% (range 18%-29%) in the grey as well as the white matter of patients with the m.3243A > G mutation. A decrease in the metabolic rate of glucose was found with predilection to the posterior part of the brain. No major changes were detected in cerebral blood flow or the number of white matter lesions. Our results show that the m.3243A > G mutation leads to a global decrease in oxygen consumption in the grey matter including areas where no other signs of disease were present.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据