[18F]FEAC and [18F]FEDAC: Two novel positron emission tomography ligands for peripheral-type benzodiazepine receptor in the brain |
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| Authors: | Kazuhiko Yanamoto Katsushi Kumata Tomoteru Yamasaki Chika Odawara Kazunori Kawamura Joji Yui Akiko Hatori Kazutoshi Suzuki Ming-Rong Zhang |
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| Affiliation: | Department of Molecular Probes, Molecular Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan |
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| Abstract: | [18F]FEAC ([18F]4a) and [18F]FEDAC ([18F]4b) were developed as two novel positron emission tomography (PET) ligands for peripheral-type benzodiazepine receptor (PBR). [18F]4a and [18F]4b were synthesized by fluoroethylation of precursors 8a and 8b with [18F]FCH2CH2Br ([18F]9), respectively. Small-animal PET scan for a neuroinflammatory rat model showed that the two radioligands had high uptakes of radioactivity in the kainic acid-infused striatum, a brain region where PBR density was increased. |
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