基于^(18)F-FDG PET的帕金森病脑葡萄糖代谢特征的纵向研究

Cerebral Glucose Metabolic Features of Parkinson's Disease Based on ^(18)F-FDG PET:A Longitudinal Study

目的建立帕金森病(PD)不同时期的脑葡萄糖代谢模式,分析目标感兴趣区(ROI)随时间的变化规律,探讨不同时期ROI与认知或运动的关系。资料与方法收集帕金森进展标志物研究项目在线数据2010年6月—2022年9月42例早期PD患者的临床数据,并在基线、12、24、36和48个月行FDG PET成像。从该数据库中获得8例与PD患者同期的健康志愿者(对照组)数据。评估PD患者脑葡萄糖代谢的纵向变化及PD相关的脑区ROI与平均统一帕金森病评定量表评分的关系。结果PD患者位于额叶和顶叶联合区的活动相对减少,小脑、壳核和扣带回的活动相对增加。PD患者尾状核、壳核、苍白球和小脑的ROI最初高于对照组,随后下降;而扣带回、黑质的ROI与之相反。壳核、苍白球和尾状核代谢活性在36个月时与平均统一帕金森病评定量表评分呈正相关(r=0.6595、0.6787、0.7167,P均<0.05),而在24个月时呈负相关(r=-0.5418、-0.8789、-0.8876,P均<0.05)。结论本研究获得了早期PD的18F-FDG成像结果的5年纵向数据,PD患者尾状核、壳核和苍白球的糖代谢活性与平均统一帕金森病评定量表评分具有相关性。

Purpose To establish glucose metabolism patterns of Parkinson's disease(PD)at different periods,and to study the changing pattern of target region of interest(ROI)with the period of time,and then explore the relationship between ROIs and cognitive or motor in different periods.Materials and Methods A total of 42 patients with early-stage PD collected from June 2010 to September 2022 in online data from the markers of Parkinson's progression study which included clinical data,and FDG PET imaging was performed at baseline,12,24,36 and 48 months.The data of 8 healthy volunteers were also obtained from the database,and the time range was the same as that of the above-mentioned PD patients.The longitudinal changes of cerebral glucose metabolism in PD patients and the relationship between PDassociated ROI and movement disorder society-sponsored revision of the unified Parkinson's disease rating scale(MDS-UPDRS)score were evaluated.Results PD was relatively reduced activity located in frontal and parietal association areas and relatively increased activity in the cerebellum,the putamen and the cingulate gyrus.In our study of target ROIs over time,FDG uptake in the caudate nucleus,putamen,pallidum,and cerebellum of patients with PD was initially higher than in the normal group,and subsequently decreased.In contrast,the ROI of PD in the anterior cingulate gyrus,posterior cingulate gyrus,the substantia nigra pars compacta and substantia nigra pars reticulata was initially lower than that in healthy controls and subsequently increased.The putamen,pallidum and caudate nucleus metabolic activity showed a positive correlation in 36 month and MDS-UPDRS scores(r=0.6595,0.6787,0.7167,all P<0.05).The caudate nucleus,putamen and pallidum metabolic activity showed a negative correlation in 24 month and baseline(r=-0.5418,-0.8789,-0.8876,all P<0.05).Conclusion We provide 5-year longitudinal data on changes in 18F-FDG imaging outcomes in early PD.In addition,the glucose metabolic activity of caudate nucleus,putamen and globus pallidus are correlated with MDS-UPDRS scores.