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pubmed-article:16206186pubmed:abstractTextA series of brain uptake studies and PET imaging studies were conducted with the sigma(1) selective imaging agent, [(18)F]FBFPA. The results of the study indicate that this radiotracer readily crosses the blood-brain barrier and labels sigma(1) receptors in vivo. In vivo blocking studies with a sigma(1) selective ligand and a nonselective sigma(1)/sigma(2) receptor ligand indicates that [(18)F]FBFPA labels sigma(1) and not sigma(2) receptors in rodent brain. PET imaging studies demonstrated a high uptake in regions of rhesus monkey brain having a high density of sigma(1) receptors. The uptake of [(18)F]FBFPA was displaced by the sigma ligand, haloperidol (1 mg/kg, i.v.). In vivo blocking studies indicate that the progesterone blocked the brain uptake of [(18)F]FBFPA in rat brain. These data indicate that [(18)F]FBFPA is a potential radiotracer for imaging sigma(1) receptors in the CNS in vivo with PET.lld:pubmed
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pubmed-article:16206186pubmed:copyrightInfoCopyright 2005 Wiley-Liss, Inc.lld:pubmed
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pubmed-article:16206186pubmed:articleTitleN-[18F]4'-fluorobenzylpiperidin-4yl-(2-fluorophenyl) acetamide ([18F]FBFPA): a potential fluorine-18 labeled PET radiotracer for imaging sigma-1 receptors in the CNS.lld:pubmed
pubmed-article:16206186pubmed:affiliationDepartment of Radiology-PET Center Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157, USA. rhmach@mir.wustl.edulld:pubmed
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