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Head to head comparison of [18F] AV-1451 and [18F] THK5351 for tau imaging in Alzheimer's disease and frontotemporal dementia.

Abstract：

PURPOSE:Tau accumulation is a core pathologic change in various neurodegenerative diseases including Alzheimer's disease and frontotemporal lobar degeneration-tau. Recently, tau positron emission tomography tracers such as [18F] AV-1451 and [18F] THK5351 have been developed to detect tau deposition in vivo. In the present study, we performed a head to head comparison of these two tracers in Alzheimer's disease and frontotemporal dementia cases and aimed to investigate which tracers are better suited to image tau in these disorders. METHODS:A cross-sectional study was conducted using a hospital-based sample at a tertiary referral center. We recruited eight participants (two Alzheimer's disease, four frontotemporal dementia and two normal controls) who underwent magnetic resonance image, amyloid positron emission tomography with [18F]-Florbetaben and tau positron emission tomography with both THK5351 and AV-1451. To measure regional AV1451 and THK5351 uptakes, we used the standardized uptake value ratios by dividing mean activity in target volume of interest by mean activity in the cerebellar hemispheric gray matter. RESULTS:Although THK5351 and AV-1451 uptakes were highly correlated, cortical uptake of AV-1451 was more striking in Alzheimer's disease, while cortical uptake of THK5351 was more prominent in frontotemporal dementia. THK5351 showed higher off-target binding than AV-1451 in the white matter, midbrain, thalamus, and basal ganglia. CONCLUSIONS:AV-1451 is more sensitive and specific to Alzheimer's disease type tau and shows lower off-target binding, while THK5351 may mirror non-specific neurodegeneration.

journal_name

Eur J Nucl Med Mol Imaging

journal_title

European journal of nuclear medicine and molecular imaging

authors

Jang YK,Lyoo CH,Park S,Oh SJ,Cho H,Oh M,Ryu YH,Choi JY,Rabinovici GD,Kim HJ,Moon SH,Jang H,Lee JS,Jagust WJ,Na DL,Kim JS,Seo SW

doi

10.1007/s00259-017-3876-0

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

432-442

issue

eissn

1619-7070

issn

1619-7089

pii

10.1007/s00259-017-3876-0

journal_volume

pub_type

杂志文章

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Head to head comparison of [18F] AV-1451 and [18F] THK5351 for tau imaging in Alzheimer's disease and frontotemporal dementia.