Q J Nucl Med Mol Im (ISSN: 1824-4785linking, 1824-4785print, 1827-1936electronic), 2018 Mar; 62(1): 112-117.
Tipo di articolo: Journal Article,
Impact factor: 2.413, Impact factor a 5 anni: 1.825
Url: Non disponibile.
Parole chiave: Animals, Biological Transport, Dopamine, Metabolism, Dopamine Plasma Membrane Transport Proteins, Feasibility Studies, Neostriatum, Diagnostic Imaging, Protein Binding, Reproducibility Of Results, Tomography, Emission-Computed, Single-Photon, Methods, Tropanes,
*** IBB - CNR *** Dipartimento di Scienze Biomediche Avanzate, Universita degli studi di Napoli Federico II, Napoli, - firstname.lastname@example.org. Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy - email@example.com., Institute of Biostructures and Bioimages CNR, Naples, Italy - firstname.lastname@example.org., Ceinge, Advanced Biotechnologies, Scarl, Naples, Italy - email@example.com., Institute of Biostructures and Bioimages CNR, Naples, Italy., Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy., Ceinge, Advanced Biotechnologies, Scarl, Naples, Italy., IRCCS, SDN, Naples, Italy.,
BACKGROUND: In-vivo imaging of dopamine transporter (DAT), a reliable marker of degeneration of nigrostriatal dopaminergic innervation, has gained increasing interest in preclinical neurodegenerative research for studying disease mechanisms and testing new therapeutic strategies. We assessed the feasibility and the reliability of in vivo and ex vivo quantification of Methyl (3S,4S,5R)-8-(3-fluoropropyl)-3-(4-iodophenyl)-8-azabicyclo[3.2.1]octane-4-carbox ylate ([123I]FP-CIT) binding to striatal DAT sites in mouse brain. METHODS: Dedicated small animal single-photon emission computed tomography (SPECT) images of [123I]FP-CIT binding were obtained in 3 groups of healthy mice: untreated (N.=6), pre-treated with lugol solution (N.=4), and pre-treated with selective dopamine transporter uptake inhibitor GBR12909 (N.=4). Ex-vivo autoradiography studies were performed at the end of SPECT studies with phosphor image system in 4 out of the 6 untreated mice and in all mice pre-treated with lugol. Regions of interest were defined over the striatum. The specific binding (SB) was calculated using the cerebral cortex as reference region. RESULTS: SPECT images in untreated mice showed high [123I]FP-CIT uptake in the striatum and extracerebral regions. Lugol pretreatment improved striatal images quality decreasing salivary and thyroid glands uptake. SB was higher (P<0.0001) in mice pre-treated with lugol (5.97+/-0.60) than in untreated mice (2.25+/-0.28). Autoradiography showed similar SB findings in untreated (2.27+/-0.33) and lugol-treated (4.27+/-0.57) mice (P<0.0001). In-vivo striatal 123I-FP-CIT SB and ex-vivo striatal 123I-FP-CIT SB were significantly correlated (r=0.87; P<0.0001). SPECT competition studies showed a significant (P<0.0001) reduction of [123I]FP-CIT SB in the striatum after GBR12909. CONCLUSIONS: We demonstrated the feasibility of [123I]FP-CIT imaging of the normal mouse brain using small-animal SPECT without pinhole collimators. The reliability of quantitative measurement of striatal [123I]FP-CIT SB is supported by competition studies showing measurable inhibition of uptake induced by GBR12909 and by the strong correlation between in vivo and ex vivo striatal [123I]FP-CIT SB. Our data also demonstrate that pre-treatment with lugol might improve striatal [123I]FP-CIT SB in mice.
Kim YH, Shin SW, Pellicano R, Fagoonee S, Choi IJ, Kim YI, Park B, Choi JM, Kim SG, Choi J, Park JY, Oh S, Yang HJ, Lim JH, Im JP, Kim JS, Jung HC, Ponzetto A, Figura N, Malfertheiner P, Choi IJ, Kook MC, Kim YI, Cho SJ, Lee JY, Kim CG, Park B, Nam BH, Bae SE, Choi KD, Choe J, Kim SO, Na HK, Choi JY, Ahn JY, Jung KW, Lee J, Kim DH, Chang HS, Song HJ, Lee GH, Jung HY, Seta T, Takahashi Y, Noguchi Y, Shikata S, Sakai T, Sakai K, Yamashita Y, Nakayama T, Leja M, Park JY, Murillo R, Liepniece-karele I, Isajevs S, Kikuste I, Rudzite D, Krike P, Parshutin S, Polaka I, Kirsners A, Santare D, Folkmanis V, Daugule I, Plummer M, Herrero R, Tsukamoto T, Nakagawa M, Kiriyama Y, Toyoda T, Cao X, Corral JE, Mera R, Dye CW, Morgan DR, Lee YC, Lin JT, Garcia Martin R, Matia Cubillo A, Lee SH, Park JM, Han YM, Ko WJ, Hahm KB, Leontiadis GI, Ford AC, Ichinose M, Sugano K, Jeong M, Park JM, Han YM, Park KY, Lee DH, Yoo JH, Cho JY, Hahm KB, Bang CS, Baik GH, Shin IS, Kim JB, Suk KT, Yoon JH, Kim YS, Kim DJ * Helicobacter pylori Eradication for Prevention of Metachronous Recurrence after Endoscopic Resection of Early Gastric Cancer(121 visite) N Engl J Med (ISSN: 0028-4793, 0028-4793linking, 1533-4406electronic), 2015 Jun; 30642104201566393291: 749-756. Impact Factor:59.558 DettagliEsporta in BibTeXEsporta in EndNote
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666 Records (619 escludendo Abstract e Conferenze). Impact factor totale: 2713.77 (2545.696 escludendo Abstract e Conferenze). Impact factor a 5 anni totale: 2848.434 (2656.407 escludendo Abstract e Conferenze).