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Microglial activation in Parkinson's disease using [18F]-FEPPA
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نویسنده
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ghadery c. ,koshimori y. ,coakeley s. ,harris m. ,rusjan p. ,kim j. ,houle s. ,strafella a.p.
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منبع
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journal of neuroinflammation - 2017 - دوره : 14 - شماره : 1
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چکیده
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Background: neuroinflammatory processes including activated microglia have been reported to play an important role in parkinson's disease (pd). increased expression of translocator protein (tspo) has been observed after brain injury and inflammation in neurodegenerative diseases. positron emission tomography (pet) radioligand targeting tspo allows for the quantification of neuroinflammation in vivo. methods: based on the genotype of the rs6791 polymorphism in the tspo gene,we included 25 mixed-affinity binders (mabs) (14 pd patients and 11 age-matched healthy controls (hc)) and 27 high-affinity binders (habs) (16 pd patients and 11 age-matched hc) to assess regional differences in the second-generation radioligand [18f]-feppa between pd patients and hc. feppa total distribution volume (v t) values in cortical as well as subcortical brain regions were derived from a two-tissue compartment model with arterial plasma as an input function. results: our results revealed a significant main effect of genotype on [18f]-feppa v t in every brain region,but no main effect of disease or disease × genotype interaction in any brain region. the overall percentage difference of the mean feppa v t between hc-mabs and hc-habs was 32.6% (sd = 2.09) and for pd-mabs and pd-habs was 43.1% (sd = 1.21). conclusions: future investigations are needed to determine the significance of [18f]-feppa as a biomarker of neuroinflammation as well as the importance of the rs6971 polymorphism and its clinical consequence in pd. © 2017 the author(s).
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کلیدواژه
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Neuroinflammation; Parkinson's disease; PET; TSPO imaging
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آدرس
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university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on,canada,uhn,university of toronto,division of brain,imaging and behaviour - systems neuroscience,krembil research instituteon, Canada, university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on,canada,uhn,university of toronto,division of brain,imaging and behaviour - systems neuroscience,krembil research instituteon, Canada, university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on,canada,uhn,university of toronto,division of brain,imaging and behaviour - systems neuroscience,krembil research instituteon, Canada, university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on, Canada, university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on, Canada, toronto western hospital,uhn,university of toronto,neurology division,department of medicine,morton and gloria shulman movement disorder unit and e.j. safra parkinson disease programon,canada,uhn,university of toronto,division of brain,imaging and behaviour - systems neuroscience,krembil research instituteon, Canada, university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on, Canada, toronto western hospital,uhn,university of toronto,neurology division,department of medicine,morton and gloria shulman movement disorder unit and e.j. safra parkinson disease programon,canada,university of toronto,research imaging centre,campbell family mental health research institute,centre for addiction and mental health,toronto,on,canada,uhn,university of toronto,division of brain,imaging and behaviour - systems neuroscience,krembil research instituteon,canada,university of toronto,toronto western hospital and institute,camh-research imaging centre,toronto,on m5t 2s8, Canada
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