PMID- 22136885 OWN - NLM STAT- MEDLINE DCOM- 20120629 LR - 20221207 IS - 1872-9614 (Electronic) IS - 0969-8051 (Linking) VI - 39 IP - 2 DP - 2012 Feb TI - Characterization of 4-[18F]-ADAM as an imaging agent for SERT in non-human primate brain using PET: a dynamic study. PG - 279-85 LID - 10.1016/j.nucmedbio.2011.08.002 [doi] AB - INTRODUCTION: Serotonin transporter (SERT) has been associated with many psychiatric diseases. This study investigated the biodistribution of a serotonin transporter imaging agent, N,N-dimethyl-2-(2-amino-4-(18)F-fluorophenylthio)benzylamine (4-[(18)F]-ADAM), in nonhuman primate brain using positron emission tomography (PET). METHODS: Six and four Macaca cyclopis monkeys were used to determine the transit time (i.e., time necessary to reach biodistribution equilibrium) and the reproducibility of 4-[(18)F]-ADAM biodistribution in the brain, respectively. The sensitivity and specificity of 4-[(18)F]-ADAM binding to SERT were evaluated in one monkey challenged with different doses of fluoxetine and one monkey treated with 3,4-methylendioxymethamphetamine (MDMA). Dynamic PET imaging was performed for 3 h after 4-[(18)F]-ADAM intravenous bolus injection. The specific uptake ratios (SURs) in the midbrain (MB), thalamus (TH), striatum (ST) and frontal cortex (FC) were calculated. RESULTS: The distribution of 4-[(18)F]-ADAM reached equilibrium 120-150 min after injection. The mean SURs were 2.49 +/- 0.13 in MB, 1.59 +/- 0.17 in TH, 1.35 +/- 0.06 in ST and 0.34 +/- 0.03 in FC, and the minimum variability was shown 120-150 min after 4-[(18)F]-ADAM injection. Using SURs and intraclass coefficient of correlation, the test/retest variability was under 8% and above 0.8, respectively, in SERT-rich areas. Challenge with fluoxetin (0.75-2 mg) dose-dependently inhibited the SURs in various brain regions. 4-[(18)F]-ADAM binding was markedly reduced in the brain of an MDMA-treated monkey compared to that in brains of normal controls. CONCLUSION: 4-[(18)F]-ADAM appears to be a highly selective radioligand for imaging SERT in monkey brain. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Chen, Yu-An AU - Chen YA AD - Graduate Institute of Life Sciences, National Defense Medical Center, 114 Taipei, Taiwan. FAU - Huang, Wen-Sheng AU - Huang WS FAU - Lin, Yaoh-Shiang AU - Lin YS FAU - Cheng, Cheng-Yi AU - Cheng CY FAU - Liu, Ren-Shyan AU - Liu RS FAU - Wang, Shyh-Jen AU - Wang SJ FAU - Li, I-Hsun AU - Li IH FAU - Huang, San-Yuan AU - Huang SY FAU - Shiue, Chyng-Yann AU - Shiue CY FAU - Chen, Cheng-Yu AU - Chen CY FAU - Ma, Kuo-Hsing AU - Ma KH LA - eng PT - Journal Article DEP - 20111201 PL - United States TA - Nucl Med Biol JT - Nuclear medicine and biology JID - 9304420 RN - 0 (Benzylamines) RN - 0 (Fluorine Radioisotopes) RN - 0 (N,N-dimethyl-2-(2-amino-4-fluorophenylthio)benzylamine) RN - 0 (Serotonin Agents) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 0 (Serotonin Uptake Inhibitors) RN - 01K63SUP8D (Fluoxetine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Benzylamines/*pharmacokinetics MH - Brain/*diagnostic imaging/metabolism MH - Female MH - Fluorine Radioisotopes/*pharmacokinetics MH - Fluoxetine/pharmacology MH - Macaca MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/pharmacology MH - Positron-Emission Tomography/*methods MH - Reproducibility of Results MH - Sensitivity and Specificity MH - Serotonin Agents/pharmacology MH - Serotonin Plasma Membrane Transport Proteins/*metabolism MH - Selective Serotonin Reuptake Inhibitors/pharmacology MH - Tissue Distribution EDAT- 2011/12/06 06:00 MHDA- 2012/06/30 06:00 CRDT- 2011/12/06 06:00 PHST- 2011/05/26 00:00 [received] PHST- 2011/07/21 00:00 [revised] PHST- 2011/08/01 00:00 [accepted] PHST- 2011/12/06 06:00 [entrez] PHST- 2011/12/06 06:00 [pubmed] PHST- 2012/06/30 06:00 [medline] AID - S0969-8051(11)00188-0 [pii] AID - 10.1016/j.nucmedbio.2011.08.002 [doi] PST - ppublish SO - Nucl Med Biol. 2012 Feb;39(2):279-85. doi: 10.1016/j.nucmedbio.2011.08.002. Epub 2011 Dec 1.