期刊
FRONTIERS IN NEUROSCIENCE
卷 15, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fnins.2021.664525
关键词
phenylketonuria; hyperphenylalaninemia; [F-18]fluorodeoxyglucose PET; phenylalanine; tyrosine ratio; intellectual function
资金
- Medical Research Council [MR/N013042/1]
- Wellcome Trust/Engineering and Physical Sciences Research Council (EPSRC) Centre for Medical Engineering [WT 203148/Z/16/Z]
- MRC [MR/N013042/1] Funding Source: UKRI
The study found an association between historical mean Phe:Tyr ratio and blood biomarkers, providing better predictive value for cerebral glucose metabolism in patients with memory problems.
We retrospectively examined the relationship between blood biomarkers, in particular the historical mean phenylalanine to tyrosine (Phe:Tyr) ratio, and cerebral glucose metabolism. We hypothesized that the historical mean Phe:Tyr ratio would be more predictive of cerebral glucose metabolism than the phenylalanine (Phe) level alone. We performed a retrospective case series analysis involving 11 adult classical phenylketonuria/hyperphenylalaninemia patients under the care of an Inherited Metabolic & Neuropsychiatry Clinic who had complained of memory problems, collating casenote data from blood biochemistry, and clinical [F-18]fluorodeoxyglucose positron emission tomography ([F-18]FDG PET). The Phe:Tyr ratio was calculated for individual blood samples and summarized as historical mean Phe:Tyr ratio (Phe:Tyr) and historical standard deviation in Phe:Tyr ratio (SD-Phe:Tyr), for each patient. Visual analyses of [F-18]FDG PET revealed heterogeneous patterns of glucose hypometabolism for eight patients. [F-18]FDG PET standardized uptake was negatively correlated with Phe in a large cluster with peak localized to right superior parietal gyrus. Even larger clusters of negative correlation that encompassed most of the brain, with frontal peaks, were observed with Phe:Tyr, and SD-Phe:Tyr. Our case series analysis provides further evidence for the association between blood biomarkers, and cerebral glucose hypometabolism. Mean historical blood Phe:Tyr ratio, and its standard deviation over time, appear to be more indicative of global cerebral glucose metabolism in patients with memory problems than Phe.
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