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Ricci L, Matarrese M, Peters JM, Tamilia E, Madsen JR, Pearl PL, Papadelis C. Virtual implantation using conventional scalp EEG delineates seizure onset and predicts surgical outcome in children with epilepsy. Clin Neurophysiol 2022; 139:49-57. [PMID: 35526353 PMCID: PMC10026594 DOI: 10.1016/j.clinph.2022.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/04/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Delineation of the seizure onset zone (SOZ) is required in children with drug resistant epilepsy (DRE) undergoing neurosurgery. Intracranial EEG (icEEG) serves as gold standard but has limitations. Here, we examine the utility of virtual implantation with electrical source imaging (ESI) on ictal scalp EEG for mapping the SOZ and predict surgical outcome. METHODS We retrospectively analyzed EEG data from 35 children with DRE who underwent surgery and dichotomized into seizure-free (SF) and non-seizure-free (NSF). We estimated virtual sensors (VSs) at brain locations that matched icEEG implantation and compared ictal patterns at VSs vs icEEG. We calculated the agreement between VSs SOZ and clinically defined SOZ and built receiver operating characteristic (ROC) curves to test whether it predicted outcome. RESULTS Twenty-one patients were SF after surgery. Moderate agreement between virtual and icEEG patterns was observed (kappa = 0.45, p < 0.001). Virtual SOZ agreement with clinically defined SOZ was higher in SF vs NSF patients (66.6% vs 41.6%, p = 0.01). Anatomical concordance of virtual SOZ with clinically defined SOZ predicted outcome (AUC = 0.73; 95% CI: 0.57-0.89; sensitivity = 66.7%; specificity = 78.6%; accuracy = 71.4%). CONCLUSIONS Virtual implantation on ictal scalp EEG can approximate the SOZ and predict outcome. SIGNIFICANCE SOZ mapping with VSs may contribute to tailoring icEEG implantation and predict outcome.
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Affiliation(s)
- Lorenzo Ricci
- Unit of Neurology, Neurophysiology, Neurobiology, Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy
| | - Margherita Matarrese
- Unit of Non-Linear Physics and Mathematical Modelling, Engineering Department, University Campus Bio-Medico of Rome, Rome, Italy; Jane and John Justin Neurosciences Center, Cook Children's Health Care System, Fort Worth, TX, USA; Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Jurriaan M Peters
- Division of Epilepsy and Clinical Neurophysiology, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Eleonora Tamilia
- Division of Newborn Medicine, Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Joseph R Madsen
- Division of Epilepsy Surgery, Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Phillip L Pearl
- Division of Epilepsy and Clinical Neurophysiology, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Christos Papadelis
- Jane and John Justin Neurosciences Center, Cook Children's Health Care System, Fort Worth, TX, USA; Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA; School of Medicine, Texas Christian University, Fort Worth, TX, USA.
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Matarrese M, Salimbeni A, Turozzi D, Poma D, Turolla E, Todde S, Magni F, Soloviev D, Carpinelli A, Kienle MG, Fazio F. Radiosyntesis of the ace inhibitor [11C]zofenoprilat. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.25804401135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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3
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Rota D, Moresco R, Iannacone S, Florea I, Garibotto V, Panzacchi A, Raggi A, Marcone A, Matarrese M, Masiello V, Perani D, Cappa S, Fazio F. Microglial activation in Parkinson's disease and Lewy body dementia: A PET study. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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4
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Moresco RM, Lavazza T, Belloli S, Lecchi M, Pezzola A, Todde S, Matarrese M, Carpinelli A, Turolla E, Zimarino V, Popoli P, Malgaroli A, Fazio F. Quinolinic acid induced neurodegeneration in the striatum: a combined in vivo and in vitro analysis of receptor changes and microglia activation. Eur J Nucl Med Mol Imaging 2007; 35:704-15. [PMID: 18080815 DOI: 10.1007/s00259-007-0651-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Accepted: 11/04/2007] [Indexed: 10/22/2022]
Abstract
PURPOSE Huntington's disease (HD) is a progressive neurodegenerative disorder, which is characterised by prominent neuronal cell loss in the basal ganglia with motor and cognitive disturbances. One of the most well-studied pharmacological models of HD is produced by local injection in the rat brain striatum of the excitotoxin quinolinic acid (QA), which produces many of the distinctive features of this human neurodegenerative disorder. Here, we report a detailed analysis, obtained both in vivo and in vitro of this pharmacological model of HD. MATERIALS AND METHODS By combining emission tomography (PET) with autoradiographic and immunocytochemical confocal laser techniques, we quantified in the QA-injected striatum the temporal behavior (from 1 to 60 days from the excitotoxic insult) of neuronal cell density and receptor availability (adenosine A(2A) and dopamine D(2) receptors) together with the degree of microglia activation. RESULTS Both approaches showed a loss of adenosine A(2A) and dopamine D(2) receptors paralleled by an increase of microglial activation. CONCLUSION This combined longitudinal analysis of the disease progression, which suggested an impairment of neurotransmission, neuronal integrity and a reversible activation of brain inflammatory processes, might represent a more quantitative approach to compare the differential effects of treatments in slowing down or reversing HD in rodent models with potential applications to human patients.
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Affiliation(s)
- R M Moresco
- IBFM-CNR, University of Milan Bicocca, Nuclear Medicine Department, San Raffaele Scientific Institute, Milano, Italy.
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Carpinelli A, Magni F, Cattaneo A, Matarrese M, Turolla E, Todde S, Bosso N, Galli Kienle M, Fazio F. Improved synthesis and radiolabeling of [11C]MP4A, a suitable ligand for the investigation of the cholinergic system using PET. Appl Radiat Isot 2006; 64:182-6. [PMID: 16169239 DOI: 10.1016/j.apradiso.2005.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2005] [Revised: 07/12/2005] [Accepted: 07/18/2005] [Indexed: 11/18/2022]
Abstract
An improved synthesis of the precursor acetic acid-piperidine-4-yl ester by acetylation of 4-hydroxypiperidine hydrochloride in anhydrous chloroform was developed. A procedure for fast evaluation and characterization of products originated by acetylation of the 4-piperidinol using LC-APCI/MS with an acetonitrile-water gradient method on a Merck Purosphere RP-18 column was also developed. The highly purified precursor allowed the production of [11C]MP4A for PET studies of acetylcholine neurotransmission system. The tracer was produced with >98% radiochemical purity, with yields ranging 20-60% (decay-corrected) from EOB.
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Affiliation(s)
- A Carpinelli
- IBFM-CNR, Scientific Institute, University of Milano Bicocca, H. S. Raffaele, Via Olgettina 60, 20132 Milano, Italy.
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Moresco RM, Belloli S, Todde S, Matarrese M, Carpinelli A, Turolla E, Popoli P, Pèzzola A, Carpinelli A, Lecchi M, Simonelli P, Fazio F. Longitudinal evaluation of a preclinical model of Huntington disease using molecular imaging techniques and selected radioligands. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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7
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Bertoldo A, Pietra L, Moresco R, Panzacchi A, Gilardi M, Matarrese M, Turolla E, Fazio F, Cobelli C. Quantitative in vivo imaging of microglia activation using [11C]PK11195 and two reference tissue models. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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8
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Belloli S, Moresco RM, Matarrese M, Biella G, Sanvito F, Simonelli P, Turolla E, Olivieri S, Cappelli A, Vomero S, Galli-Kienle M, Fazio F. Evaluation of three quinoline-carboxamide derivatives as potential radioligands for the in vivo pet imaging of neurodegeneration. Neurochem Int 2004; 44:433-40. [PMID: 14687608 DOI: 10.1016/j.neuint.2003.08.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The peripheral-type benzodiazepine receptors (PBRs) are only minimally expressed in normal brain parenchyma, where they are primarily localized in glial cells. Their basal expression rises in different neurodegenerative disorders, due to the presence of infiltrating inflammatory cells and activated microglia. [11C]PK11195, a selective PBR antagonist, has been used for the in vivo PET monitoring of neurodegeneration in clinical observations. We recently developed and labeled with carbon-11 three new carboxamide derivatives: [11C]VC193M, [11C]VC195 and [11C]VC198M. Aim of this study was to evaluate these ligands for the in vivo measuring of PBRs expression in neurodegenerations and compare their kinetic behavior with that of the reference tracer [11C]PK11195. Radioligands were evaluated in a preclinical model of Huntington's disease consisting in the monolateral striatal injection of quinolinic acid (QA). Activated microglia and astrocytic gliosis was present only within the affected striatum. A concomitant increase in radioactivity accumulation was observed for all the tracers examined (P<0.01). Among the new compounds, [11C]VC195 showed higher levels of lesioned/unlesioned striatum ratios (3.28+/-0.44), in comparison with [11C]VC193M and [11C]VC198M (2.69+/-0.53 and 1.52+/-0.36, respectively), but slightly inferior to that observed for [11C]PK11195 (3.76+/-1.41).In conclusion, the results of the study indicate that [11C]VC195 is a promising candidate for in vivo PET monitoring of neurodegenerative processes but its in vivo behavior overlap that of [11C]PK11195.
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Affiliation(s)
- S Belloli
- IBFM-CNR, University of Milan-Bicocca, H San Raffaele, 20132 Milan, Italy
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Scarrone S, Cappelli A, Cupello A, Matarrese M, Moresco RM, Fazio F. Ethanol inhibits the binding of substance P to rat brain cortex NK1 receptors. Neurochem Res 2003; 28:1159-62. [PMID: 12834254 DOI: 10.1023/a:1024216109472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The binding of 125I-labeled substance P (SP) to rat brain cortex membranes has been studied under control conditions and in the presence of ethanol. The binding of SP at low concentrations (20-1000 pM) gave two components, one with a KD value of 80 pM and another one with a KD of 500 pM. The higher-affinity component is due to NK1 receptors, as confirmed by the inhibition of the SP binding by the rodent NK1 specific agonist [Sar9 Met(O2)11]SP. Ethanol (1.7 mM) added to the binding assays inhibited by more than 50% the specific binding at a very low SP concentration (20 pM); however, it had no effect at SP concentrations ranging from 50 to 120 pM. This suggests a decrease by ethanol of the affinity of SP to the NK1 receptors involved in this binding component. The ethanol effect disappeared at [EtOH] < or = 0.17 mM.
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Affiliation(s)
- S Scarrone
- Istituto di Bioimmagini e Fisiologia Molecolare, CNR, Italy
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10
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Picchio M, Messa C, Landoni C, Gianolli L, Sironi S, Brioschi M, Matarrese M, Matei DV, De Cobelli F, Del Maschio A, Rocco F, Rigatti P, Fazio F. Value of [11C]choline-positron emission tomography for re-staging prostate cancer: a comparison with [18F]fluorodeoxyglucose-positron emission tomography. J Urol 2003; 169:1337-40. [PMID: 12629355 DOI: 10.1097/01.ju.0000056901.95996.43] [Citation(s) in RCA: 261] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE We compared [11C]choline-positron emission tomography (PET) with [18F]fluorodeoxyglucose-PET for re-staging prostate cancer in a group of 100 patients. MATERIALS AND METHODS A total of 100 consecutive patients referred for whole body [18F]fluorodeoxyglucose-PET for clinical prostate re-staging after radical treatment for prostate cancer were retrospectively included in the study. Mean prostate specific antigen (PSA) was 6.57 ng./ml. In all cases [11C]choline-PET was also performed. PET studies were done with a multiring device 5 minutes after intravenous injection of approximately 370 MBq. [11C]choline and 60 minutes after injection of approximately 370 MBq. [18F]fluorodeoxyglucose. PET findings were compared with those obtained with different conventional imaging and with PSA assessed at the time of PET and 1 year later. RESULTS Areas of abnormal focal increases were noted in 47% of patients on [11C]choline-PET and in 27% on [18F]fluorodeoxyglucose-PET. Of the 100 patients 49 had positive conventional imaging findings. All except 14 [11C]choline-PET findings were concordant with conventional imaging, including 6 negative and 8 positive conventional imaging results. All except 1 [11C]choline-PET negative cases also had negative conventional imaging after 1 year. PSA at 1 year remained stable or decreased in 80% and 62% of [11C]choline-PET negative and positive cases, respectively. CONCLUSIONS [11C]choline-PET seems to be useful for re-staging prostatectomy cases with increasing serum PSA levels. It is superior to [18F]fluorodeoxyglucose-PET and complementary to conventional imaging but with the advantage of staging disease at a single step.
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Affiliation(s)
- M Picchio
- Institute H. San Raffaele, University of Milano-Bicocca, Italy
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Picchio M, Landoni C, Messa C, Gianolli L, Matarrese M, De Cobelli F, Maschio AD, Fazio F. Positive [11C]choline and negative [18F]FDG with positron emission tomography in recurrence of prostate cancer. AJR Am J Roentgenol 2002; 179:482-4. [PMID: 12130458 DOI: 10.2214/ajr.179.2.1790482] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- M Picchio
- Department of Nuclear Medicine, Institute H San Raffaele, Via Olgettina 60, 20132, Milan, Italy
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12
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Carpinelli A, Todde S, Matarrese M, Moresco RM, Dosio F, Wollmer P, Magni F, Kienle MG, Fazio F. An optimized semiautomatic method for labelling of palmitic acid with [11C]CO2. J Labelled Comp Radiopharm 2001. [DOI: 10.1002/jlcr.25804401356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Matarrese M, Moresco RM, Cappelli A, Anzini M, Vomero S, Simonelli P, Verza E, Magni F, Sudati F, Soloviev D, Todde S, Carpinelli A, Kienle MG, Fazio F. Labeling and evaluation of N-[11C]methylated quinoline-2-carboxamides as potential radioligands for visualization of peripheral benzodiazepine receptors. J Med Chem 2001; 44:579-85. [PMID: 11170647 DOI: 10.1021/jm001004h] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel quinoline-2-carboxamide derivatives N-[methyl-11C]-3-methyl-4-phenyl-N-(phenylmethyl)quinoline-2-carboxamide ([11C]4), (+/-)-N-[methyl-11C]-3-methyl-N-(1-methylpropyl)-4-phenylquinoline-2-carboxamide ([11C]5), and (+/-)-N-[methyl-11C]-3-methyl-4-(2-fluorophenyl)-N-(1-methylpropyl)quinoline-2-carboxamide ([11C]6) were labeled with carbon-11 (t1/2 = 20.4 min, beta+ = 99.8%) as potential radioligands for the noninvasive assessment of peripheral benzodiazepine type receptors (PBR) in vivo with positron emission tomography (PET). The radiosynthesis consisted of N-methylation of the desmethyl precursors 3-methyl-4-phenyl-N-(phenylmethyl)quinoline-2-carboxamide (4a), (+/-)-3-methyl-N-(1-methylpropyl)-4-phenylquinoline-2-carboxamide (5a), and (+/-)-4-(2-fluorophenyl)-3-methyl-N-(1-methylpropyl)quinoline-2-carboxamide (6a) with either [11C]methyl iodide or [11C]methyl triflate in the presence of tetrabutylammonium hydroxide or potassium hydroxide in dimethylformamide. The radioligands [11C]4, [11C]5, and [11C]6 were synthesized with over 99% radiochemical purity in 30 min, 30 +/- 5% radiochemical yield, calculated at the end of synthesis (EOS) non-decay-corrected, and 2.5 +/- 1.2 Ci/micromol of specific radioactivity. Inhibition studies in rats following intravenous pre-administration of 1-(2-chlorophenyl)-N-methyl-N-(1-methylpropyl)-3-isoquinolinecarboxamide (PK 11195, 1) showed high specific binding to PBR of [11C]4, [11C]5, and [11C]6 in heart, lung, kidney, adrenal gland, spleen, and brain. The biological data suggest that [11C]5, [11C]6, and particularly [11C]4 are promising radioligands for PBR imaging in vivo with PET.
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Affiliation(s)
- M Matarrese
- INB-CNR, University of Milano/Bicocca, Institute H.S. Raffaele, Via Olgettina 60, 20132 Milano, Italy
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Soloviev DV, Matarrese M, Moresco RM, Todde S, Bonasera TA, Sudati F, Simonelli P, Magni F, Colombo D, Carpinelli A, Kienle MG, Fazio F. Asymmetric synthesis and preliminary evaluation of (R)- and (S)-[11C]bisoprolol, a putative beta1-selective adrenoceptor radioligand. Neurochem Int 2001; 38:169-80. [PMID: 11137886 DOI: 10.1016/s0197-0186(00)00049-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
(+/-)-1-[4-(2-Isopropoxyethoxymethyl)-phenoxy]-3-isopropylamino-2-propanol (bisoprolol) is a potent, clinically used beta(1)-adrenergic agent. (R)-(+) and (S)-(-) enantiomers of bisoprolol were labelled with carbon-11 (t(1/2)=20.4 min) as putative tracers for the non-invasive assessment of the beta(1)-adrenoceptor subtype in the human heart and brain with positron emission tomography (PET). The radiosynthesis consisted of reductive alkylation of des-iso-propyl precursor with [2-11C]acetone in the presence of sodium cyanoborohydride and acetic acid. The stereo-conservative synthesis of (R)-(+) and (S)-(-)-1-[4-(2-isopropoxyethoxymethyl)-phenoxy]-3-amino-2-propanol to be used as the precursors for the radiosynthesis of [11C]bisoprolol enantiomers was readily accomplished by the use of the corresponding chiral epoxide in three steps starting from the commercially available hydroxybenzyl alcohol. The final labelled product (either (+) or (-)-1-[4-(-isopropoxyethoxymethyl)-phenoxy]-3- [11C]isopropylamino-2-propanol) was obtained in 99% radiochemical purity in 30 min with 15+/-5% (EOS, non-decay corrected) radiochemical yield and 3.5+/-1 Ci/micromol specific radioactivity. Preliminary biological evaluation of the tracer in rats showed that about 30% of heart uptake of [11C](S)-bisoprolol is due to specific binding. The high non-specific uptake in lung might mask the heart uptake, thus precluding the use of [11C](S)-bisoprolol for heart and lung studies by PET. The remarkably high uptake of the tracer in rat brain areas rich of beta-adrenergic receptors such as pituitary (1.8+/-0.3% I.D. at 30 min) was blocked by pre-treatment with the beta-adrenergic antagonists propranolol (45%) and bisoprolol (51%, p<0.05). [11C](S)-bisoprolol deserves further evaluation in other animal models as a putative beta(1) selective radioligand for in vivo investigation of central adrenoceptors.
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Carpinelli A, Matarrese M, Moresco RM, Simonelli P, Todde S, Magni F, Galli Kienle M, Fazio F. Radiosynthesis of [123I]betaCIT, a selective ligand for the study of the dopaminergic and serotoninergic systems in human brain. Appl Radiat Isot 2001; 54:93-5. [PMID: 11144258 DOI: 10.1016/s0969-8043(00)00179-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The procedure previously reported for the radiosynthesis of [123I]betaCIT was modified in order to improve both radiochemical yield and purity of betaCIT (2beta-carbomethoxy-3beta(4-iodophenyl) tropane) to be injected for SPECT (Single Photon Emission Computed Tomography) analysis imaging. The overall procedure, involving a HPLC purification step, results in quite good and reproducible yields of a highly purified tracer.
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Affiliation(s)
- A Carpinelli
- CNR-INB, University of Milano-Bicocca, Scientific Institute H San Raffaele, Milan, Italy
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Todde S, Moresco RM, Simonelli P, Baraldi PG, Cacciari B, Spalluto G, Varani K, Monopoli A, Matarrese M, Carpinelli A, Magni F, Kienle MG, Fazio F. Design, radiosynthesis, and biodistribution of a new potent and selective ligand for in vivo imaging of the adenosine A(2A) receptor system using positron emission tomography. J Med Chem 2000; 43:4359-62. [PMID: 11087559 DOI: 10.1021/jm0009843] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S Todde
- CNR-INB, University of Milano-Bicocca, Scientific Institute H San Raffaele, Via Olgettina 60, I-20132 Milano, Italy
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17
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Moresco RM, Matarrese M, Soloviev D, Simonelli P, Rigamonti M, Gobbo C, Todde S, Carpinelli A, Kienle MG, Fazio F. Synthesis and in vivo evaluation of [11C]ICI 118551 as a putative subtype selective beta2-adrenergic radioligand. Int J Pharm 2000; 204:101-9. [PMID: 11011992 DOI: 10.1016/s0378-5173(00)00480-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Erytro-(+/-)-1-[2,3-(dihydro-7-methyl-1H-inden-4-yl)oxy]-3-[ iso-propylamino]-2-butanol (ICI 118551) a potent clinically used beta2 adrenergic antagonist, was labelled with carbon-11 (t1/2 = 20.4 min) as a potential radioligand for the non-invasive assessment of beta2 adrenergic receptors in the lung with positron emission tomography (PET). The radiolabelled compound was prepared by reductive N-alkylation of its des-isopropyl precursor with [2-11C]acetone. (+/-)-[11C]ICI 118551 was obtained in greater than 98% radiochemical purity in 30 min with a radiochemical yield of 15 + 5% (non-decay corrected) and a specific radioactivity 2.5 +/- 0.5 Ci/micromol. The biological evaluation of racemic erythro (+/-)-[11C]ICI 118551 in rats and Macaca Nemestrina shows a high radioactivity uptake in lung and heart. However, in both animal models no detectable displacement of lung radioactivity concentration was observed after pre-treatment with propranolol or ICI 118551, which indicates that in this organ, radioligand uptake is mostly due to non-specific binding. The biological data suggest that erythro (+/-)-[11C]ICI 118551 is not adequate to be further developed as a tracer for beta2 adrenergic receptor imaging in vivo.
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Affiliation(s)
- R M Moresco
- INB-CNR, University of Milano-Bicocca, Institute H.S. Raffaele, Milan, Italy
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Todde S, Moresco RM, Fröstl W, Stampf P, Matarrese M, Carpinelli A, Magni F, Galli Kienle M, Fazio F. Synthesis and in vivo evaluation of [(11)C]CGP62349, a new GABA(B) receptor antagonist. Nucl Med Biol 2000; 27:565-9. [PMID: 11056370 DOI: 10.1016/s0969-8051(00)00124-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This paper describes the radiosynthesis of [(11)C]CGP62349, a potential ligand to assess GABA(B) receptors in vivo. (11)C was introduced by O-methylation of the corresponding des-methyl precursor, namely CGP67780. The final product was obtained with a reliable method in good yield. The radioligand was tested in monkey, revealing negligible blood-brain barrier penetration and brain uptake, thus prompting us to search for a new target structure with a better lipophilicity.
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Affiliation(s)
- S Todde
- CNR-INB, University of Milano-Bicocca, Scientific Institute H San Rafaele, Via Olgettina 60, Milano, Italy.
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19
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Matarrese M, Soloviev D, Moresco RM, Todde S, Simonelli P, Colombo D, Magni F, Carpinelli A, Fazio F, Kienle MG. Synthesis and in vivo evaluation of 3-[11C]methyl-(3-methoxy-naphthalen)-2-yl-(1-benzyl-piperidin)-4-yl-acetate (SB-235753), as a putative dopamine D4 receptors antagonist for PET. J Labelled Comp Radiopharm 2000. [DOI: 10.1002/(sici)1099-1344(20000330)43:4<359::aid-jlcr323>3.0.co;2-v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Wollmer P, Moresco RM, Simonelli P, Matarrese M, Rigamonti M, Ortu G, LaGaetana R, Soloviev D, Galli M, Fazio F. Evaluation of [O-methyl-(11)C]fluvoxamine as a tracer for serotonin re-uptake sites. Nucl Med Biol 2000; 27:177-81. [PMID: 10773547 DOI: 10.1016/s0969-8051(99)00106-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
We evaluated [(11)C]fluvoxamine as a tracer for the serotonin re-uptake site. Studies of the distribution of the tracer in rat and primate brain showed adequate uptake of [(11)C]fluvoxamine, but failed to reveal regions with known high density of serotoninergic re-uptake sites. Pretreatment with unlabeled fluvoxamine did not substantially change the distribution. In rat brain tissue, nearly all radioactivity represented intact [(11)C]fluvoxamine. [(11)C]Fluvoxamine does not function as a tracer for serotonin re-uptake sites, owing to high nonspecific binding in the brain.
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Affiliation(s)
- P Wollmer
- CNR-INB, University of Milan, Institute H.S. Raffaele, Milan, Italy
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21
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Abstract
Carbon-11 labeled acetone is a useful radiosynthetic precursor. Previously, strict control of no-carrier-added stoichiometry was required to prepare it from reaction of CO2 and methyl lithium. However, excess methyl lithium may be selectively quenched to avoid reaction with nascent acetone to give tert-butanol. We report a simple pKa-based strategy to sequentially and selectively quench MeLi and acetone to give yields of up to 100% acetone even in the presence of a large excess of MeLi. The method gives good yields of acetone under conditions that previously precluded its synthesis.
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Affiliation(s)
- A R Studenov
- Department of Chemistry, Case Western Reserve University and University Hospitals of Cleveland, Ohio 44106, USA
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22
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Lucignani G, Losa M, Moresco RM, Del Sole A, Matarrese M, Bettinardi V, Mortini P, Giovanelli M, Fazio F. Differentiation of clinically non-functioning pituitary adenomas from meningiomas and craniopharyngiomas by positron emission tomography with [18F]fluoro-ethyl-spiperone. Eur J Nucl Med 1997; 24:1149-55. [PMID: 9283109 DOI: 10.1007/bf01254248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The differential diagnosis among various types of non-functioning sellar and parasellar tumours is sometimes difficult using currently available methods of morphological imaging. The aim of this study was to define whether assessment of the uptake of [18F]fluoro-ethyl-spiperone (FESP) with positron emission tomography (PET) could be helpful for the differential diagnosis of pituitary adenomas and other parasellar lesions, and for establishing the appropriate therapeutic approach. The population examined comprised 16 patients with the diagnosis of primary tumour of the sellar/parasellar region who were waiting to undergo surgical treatment. The results demonstrated that PET with [18F]FESP is a very specific method for differentiating adenomas from craniopharyngiomas and meningiomas. The visual interpretation of images allows such differentiation at approximately 70 min after tracer injection. Semiquantitative analysis of the dynamic PET data confirmed the results of visual interpretation, demonstrating that the uptake of [18F]FESP was consistently (i.e. throughout the series) at least two- to threefold higher in non-functioning adenomas than in other parasellar tumours as early as 70 min after tracer injection, and that it increased still further thereafter. It is concluded that PET with [18F]FESP might be of clinical value in those cases in which the differential diagnosis among various histological types of sellar tumour is uncertain with conventional methods.
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Affiliation(s)
- G Lucignani
- INB-CNR, Department of Nuclear Medicine, H.S. Raffaele, Milan, Italy
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23
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Matarrese M, Soloviev D, Todde S, Magni F, Colombo D, Galli Kienle M, Fazio F. Synthesis of [O-methyl-11C]fluvoxamine--a potential serotonin uptake site radioligand. Appl Radiat Isot 1997; 48:749-54. [PMID: 9204526 DOI: 10.1016/s0969-8043(96)00304-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
5-Methoxy-1-[4-(trifluoromethyl)-phenyl]-1-pentanone-O-(2-aminoethyl)oxi me (fluvoxamine), a potent clinically used antidepressant, was labelled with carbon-11 (t1/2 = 20.4 min) as a potential radioligand for the non-invasive assessment of serotonin uptake sites in the human brain with positron emission tomography (PET). The two-step radiochemical synthesis consisted of O-methylation of an amino-protected desmethyl precursor with [11C]methyl iodide under mild conditions in the presence of tetrabutylammonium hydroxide in acetonitrile, followed by deprotection with trifluoroacetic acid. 5-[11C]Methoxy-1-[4-(trifluoromethyl)-phenyl]-1-pentanone-O-(2-aminoethy l) oxime was obtained in > 98% radiochemical purity in 40 min with a radiochemical yield of 4 +/- 2% (non-decay corrected) and a specific radioactivity of 1 +/- 0.5 Ci/mumol. 5-Hydroxy-1-[4-(trifluoromethyl)-phenyl]-1-pentanone-O-[2- (tert-butoxycarbonylamino)ethyl]oxime, the precursor for the radiosynthesis of [11C]fluvoxamine, was prepared by a convenient three-step synthesis from the pharmaceutical form of fluvoxamine maleate by converting it into the free base, demethylation by trimethyliodosilane and introduction of the BOC-protective group with di-tert-butyl dicarbonate.
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Affiliation(s)
- M Matarrese
- CNR-INB, University of Milan, Institute H.S. Raffaele, Italy
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24
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Gianolli L, Dosio F, Matarrese M, Colombo F, Cutler C, Stepniak-Biniakiewicz D, Deutsch E, Savi A, Lucignani G, Fazio F. 99mTc-2GAM: a tracer for renal imaging. Nucl Med Biol 1996; 23:927-33. [PMID: 9004280 DOI: 10.1016/s0969-8051(96)00135-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We propose a renal imaging agent, the 99mTc complex of the bidentate-N,S chelate N-(mercaptoacetyl)glycine (99mTc-2GAM), with the imaging characteristics of 99mTc-DMSA but a faster kidney uptake; chemical evidence supports the formulation of 99mTc-2GAM as [Tc(v)(O)(GAM)2]-. After biodistribution and toxicity studies in animals, 99mTc-2GAM was evaluated in five normal volunteers. 99mTc-2GAM is rapidly cleared from the blood (t1/2 = 9 min) and 50% of the ID is excreted in the urine in the first 2 h. Dynamic data show a rapid renal uptake that increases up to 1 h with no significant wash-out between 1 and 8 h. The uptake in each kidney ranges from 11.3% to 20.7% ID. Low, stable liver uptake is observed. No significant activity is detected in other organs. We showed no differences between 99mTc-2GAM and 99mTc-DMSA compared in three patients with unilateral kidney disease. We conclude that 99mTc-2GAM has good practical and dosimetric features for renal imaging.
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Affiliation(s)
- L Gianolli
- INB-CNR, University of Milan, Department of Nuclear Medicine, H San Raffaele, Italy
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25
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Perani D, Cappa SF, Bettinardi V, Bressi S, Gorno-Tempini M, Matarrese M, Fazio F. Different neural systems for the recognition of animals and man-made tools. Neuroreport 1995; 6:1637-41. [PMID: 8527731 DOI: 10.1097/00001756-199508000-00012] [Citation(s) in RCA: 214] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Using positron emission tomography, we mapped brain activity in normal volunteers during the recognition of visual stimuli representing living (animals) and non-living (artefacts) entities. The subjects had to decide whether pairs of visual stimuli were different representations of the same object, or different objects. Animal recognition was associated with activations in the inferior temporo-occipital areas, bilaterally, whereas artefact recognition engaged a predominantly left hemispheric network, involving the left dorsolateral frontal cortex. These findings, which concur with clinical observations in neurological patients, provide in vivo evidence for a fractionation of the neural substrates of semantic knowledge in man.
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Affiliation(s)
- D Perani
- Institute of Neuroscience and Bioimaging, CNR University of Milan, Italy
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26
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Ippolito A, La Gioia G, Matarrese M, Resta F, Angelini P, Ruffo F. [The treatment of gastrointestinal infections with ciprofloxacin]. Minerva Med 1991; 82:181-7. [PMID: 2017314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The authors have evaluated the efficacy and tolerability of ciprofloxacin, a new broad-spectrum fluor-quinolone, in the therapy of gastrointestinal infections. The authors have studied 24 patients suffering from above-mentioned infections clinically diagnosed (11 microbiologically diagnosed too). All the patients took ciprofloxacin tablets 500 mg b.i.d. for 10 days (average). All the patients were restored to health and the tolerability was excellent.
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Affiliation(s)
- A Ippolito
- Divisione Malattie Infettive, Ospedale Civile di Taranto
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27
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Abstract
99mTc complexes of 2-ethyl-2-hydrobutyric acid, 2-hydroxyisobutyric acid and (+)- and (-)-citramalic acid are readily prepared in high yield and high purity by reduction of 99mTcO4- in the presence of excess ligand. The resulting agents are very stable in vitro, but can undergo some decomposition during chromatographic analysis unless appropriate precautions are taken. Biodistribution studies in rats and dogs show that these new 99mTc agents accumulate primarily in the kidney and urinary bladder.
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Affiliation(s)
- F Colombo
- Consiglio Nazionale delle Ricerche, Istituto Tecnologie Biomediche, Avanzate, Milano, Italy
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28
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Savi A, Gerundini P, Zoli P, Maffioli L, Compierchio A, Colombo F, Matarrese M, Deutsch E. Biodistribution of Tc-99m methoxy-isobutyl-isonitrile (MIBI) in humans. Eur J Nucl Med 1989; 15:597-600. [PMID: 2598955 DOI: 10.1007/bf00256936] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Hexakis (methoxyisobutilisonitrile) technetium(I), 99mTc-MIBI, has been proposed for myocardial perfusion studies. We have evaluated the biodistribution of this new agent in normal volunteers at rest and after stress. The biodistribution of 99mTc-MIBI is characterized by rapid blood clearance and a consequently early myocardial uptake. The initial intense hepatic activity is cleared into the gallbladder at 1 h after injection, and the best target to non target ratio is observed at 60-90 min after injection. Absorbed radiation dose calculations show that the thyroid is the critical target organ (230 mRad/mCi at rest), presumably because of 99mTc-pertechnetate generated in vivo. Our results indicate that 99mTc-MIBI is a promising tracer for myocardial perfusion imaging.
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Affiliation(s)
- A Savi
- Department of Nuclear Medicine, Istituto San Raffaele, Milano
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29
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Botticelli A, Cappiello R, Matarrese M, Sannicola Botticelli C. [Effect of aging on the human insulo-pancreatic apparatus. I. Histomorphological and histochemical aspects]. Boll Soc Ital Biol Sper 1971; 47:68-70. [PMID: 4932631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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