Composition for diagnosing amyloid-related diseases
申请人:Nagasaki University
公开号:US08192717B2
公开(公告)日:2012-06-05
A composition for diagnosing amyloid-related diseases, which comprises a flavone derivative, a chalcone derivative, a styrylchromone derivative, or a coumarin derivative, is provided. These compounds have high binding specificity to an amyloid β protein, high permeability to a blood-brain barrier, and ability to rapidly disappear from sites other than cerebral senile plaque. Accordingly, the composition of the present invention using these compounds enables the diagnosis of amyloid-related diseases with high precision.
COMPOSITION FOR AMYLOID-ASSOCIATED DISEASE DIAGNOSIS
申请人:Nagasaki University
公开号:EP1815872A1
公开(公告)日:2007-08-08
A composition for diagnosing amyloid-related diseases, which comprises a flavone derivative, a chalcone derivative, a styrylchromone derivative, or a coumarin derivative, is provided. These compounds have high binding specificity to an amyloid β protein, high permeability to a blood-brain barrier, and ability to rapidly disappear from sites other than cerebral senile plaque. Accordingly, the composition of the present invention using these compounds enables the diagnosis of amyloid-related diseases with high precision.
Two Tc-99m/Re complexes based on flavone and aurone were tested as potential probes for imaging beta-amyloid plaques using single photon emission computed tomography. Both Tc-99m-labeled derivatives showed higher affinity for A beta(1-42) aggregates than did Tc-99m-BAT. In sections of brain tissue from an animal model of AD, the Re-flavone derivative 9 and Re-aurone derivative 19 intensely stained beta-amyloid plaques. In biodistribution experiments using normal mice, Tc-99m-labeled flavone and aurone displayed similar radioactivity pharmacokinetics. With additional modifications to improve their brain uptake, Tc-99m complexes based on the flavone or aurone scaffold may serve as probes for imaging cerebral beta-amyloid plaques. (C) 2010 Elsevier Ltd. All rights reserved.