99mTc/Re complexes based on flavone and aurone as SPECT probes for imaging cerebral β-amyloid plaques
摘要:
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.
99mTc/Re complexes based on flavone and aurone as SPECT probes for imaging cerebral β-amyloid plaques
摘要:
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.