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Unda SR, Pomeranz LE, Marongiu R, Yu X, Kelly L, Hassanzadeh G, Molina H, Vaisey G, Wang P, Dyke JP, Fung EK, Grosenick L, Zirkel R, Antoniazzi AM, Norman S, Liston CM, Schaffer C, Nishimura N, Stanley SA, Friedman JM, Kaplitt MG. Bidirectional Regulation of Motor Circuits Using Magnetogenetic Gene Therapy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.07.13.548699. [PMID: 37503198 PMCID: PMC10369996 DOI: 10.1101/2023.07.13.548699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Here we report a novel suite of magnetogenetic tools, based on a single anti-ferritin nanobody-TRPV1 receptor fusion protein, which regulated neuronal activity when exposed to magnetic fields. AAV-mediated delivery of a floxed nanobody-TRPV1 into the striatum of adenosine 2a receptor-cre driver mice resulted in motor freezing when placed in an MRI or adjacent to a transcranial magnetic stimulation (TMS) device. Functional imaging and fiber photometry both confirmed activation of the target region in response to the magnetic fields. Expression of the same construct in the striatum of wild-type mice along with a second injection of an AAVretro expressing cre into the globus pallidus led to similar circuit specificity and motor responses. Finally, a mutation was generated to gate chloride and inhibit neuronal activity. Expression of this variant in subthalamic nucleus in PitX2-cre parkinsonian mice resulted in reduced local c-fos expression and motor rotational behavior. These data demonstrate that magnetogenetic constructs can bidirectionally regulate activity of specific neuronal circuits non-invasively in-vivo using clinically available devices. Teaser A novel magnetogenetics toolbox to regulate neural circuits in-vivo .
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Kaewchur T, khiewvan B, Chamroonrat W, Lolekha P, Phokaewvarangkul O, Thientunyakit T, Wongsurawat N, Kiatkittikul P, Chotipanich C, Huang WS, Pasawang P, Sontrapornpol T, Poon-iad N, Amnuaywattakorn S, Tepmongkol S. Thai national guideline for nuclear medicine investigation in movement disorders: Nuclear medicine society of Thailand, the neurological society of Thailand, and Thai medical physicist society collaboration. ASIA OCEANIA JOURNAL OF NUCLEAR MEDICINE & BIOLOGY 2024; 12:86-107. [PMID: 39050239 PMCID: PMC11263770 DOI: 10.22038/aojnmb.2023.75619.1531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/28/2023] [Accepted: 12/06/2023] [Indexed: 07/27/2024]
Abstract
Movement disorders are chronic neurological syndromes with both treatable and non-treatable causes. The top causes of movement disorders are Parkinson's disease and related disorders. Functional imaging investigations with Single Photon Emission Computed Tomography (SPECT) and Positron Emission Tomography (PET) images play vital roles in diagnosis and differential diagnosis to guide disease management. Since there have been new advanced imaging technologies and radiopharmaceuticals development, there is a need for up-to-date consensus guidelines. Thus, the Nuclear Medicine Society of Thailand, the Neurological Society of Thailand, and the Thai Medical Physicist Society collaborated to establish the guideline for Nuclear Medicine investigations in movement disorder for practical use in patient care. We have extensively reviewed the current practice guidelines from other related societies and good quality papers as well as our own experience in Nuclear Medicine practice in movement disorders. We also adjust for the most suitability for application in Thailand and other developing countries.
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Affiliation(s)
- Tawika Kaewchur
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine, Chiang Mai University Thailand
- PET/CT and Cyclotron Center, Center for Medicine Excellence, Faculty of Medicine, Chiang Mai University Thailand
| | - Benjapa khiewvan
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok Thailand
| | - Wichana Chamroonrat
- Division of Nuclear Medicine, Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Praween Lolekha
- Division of Neurology, Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathumthani Thailand
| | | | - Tanyaluck Thientunyakit
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok Thailand
| | - Nantaporn Wongsurawat
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Peerapon Kiatkittikul
- National Cyclotron and PET Centre, Chulabhorn Hospital, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Chanisa Chotipanich
- National Cyclotron and PET Centre, Chulabhorn Hospital, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Wen-Sheng Huang
- Department of Nuclear Medicine, Show Chwan Memorial Hospital, Changhua, 500 Taiwan (R.O.C.)
| | - Panya Pasawang
- Division of Nuclear Medicine, Department of Radiology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Tanawat Sontrapornpol
- Division of Nuclear Medicine, Department of Radiology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Nucharee Poon-iad
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok Thailand
| | - Sasithorn Amnuaywattakorn
- Division of Nuclear Medicine, Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Supatporn Tepmongkol
- Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Chulalongkorn University Biomedical Imaging Group (CUBIG), Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Chula Neuroscience Center, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
- Center of Excellence in Cognitive Impairment and Dementia, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Buchert R, Wegner F, Huppertz HJ, Berding G, Brendel M, Apostolova I, Buhmann C, Dierks A, Katzdobler S, Klietz M, Levin J, Mahmoudi N, Rinscheid A, Rogozinski S, Rumpf JJ, Schneider C, Stöcklein S, Spetsieris PG, Eidelberg D, Wattjes MP, Sabri O, Barthel H, Höglinger G. Automatic covariance pattern analysis outperforms visual reading of 18 F-fluorodeoxyglucose-positron emission tomography (FDG-PET) in variant progressive supranuclear palsy. Mov Disord 2023; 38:1901-1913. [PMID: 37655363 DOI: 10.1002/mds.29581] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/19/2023] [Accepted: 07/31/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND To date, studies on positron emission tomography (PET) with 18 F-fluorodeoxyglucose (FDG) in progressive supranuclear palsy (PSP) usually included PSP cohorts overrepresenting patients with Richardson's syndrome (PSP-RS). OBJECTIVES To evaluate FDG-PET in a patient sample representing the broad phenotypic PSP spectrum typically encountered in routine clinical practice. METHODS This retrospective, multicenter study included 41 PSP patients, 21 (51%) with RS and 20 (49%) with non-RS variants of PSP (vPSP), and 46 age-matched healthy controls. Two state-of-the art methods for the interpretation of FDG-PET were compared: visual analysis supported by voxel-based statistical testing (five readers) and automatic covariance pattern analysis using a predefined PSP-related pattern. RESULTS Sensitivity and specificity of the majority visual read for the detection of PSP in the whole cohort were 74% and 72%, respectively. The percentage of false-negative cases was 10% in the PSP-RS subsample and 43% in the vPSP subsample. Automatic covariance pattern analysis provided sensitivity and specificity of 93% and 83% in the whole cohort. The percentage of false-negative cases was 0% in the PSP-RS subsample and 15% in the vPSP subsample. CONCLUSIONS Visual interpretation of FDG-PET supported by voxel-based testing provides good accuracy for the detection of PSP-RS, but only fair sensitivity for vPSP. Automatic covariance pattern analysis outperforms visual interpretation in the detection of PSP-RS, provides clinically useful sensitivity for vPSP, and reduces the rate of false-positive findings. Thus, pattern expression analysis is clinically useful to complement visual reading and voxel-based testing of FDG-PET in suspected PSP. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Ralph Buchert
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | | | - Georg Berding
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital of Munich, LMU, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE) Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Ivayla Apostolova
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Carsten Buhmann
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexander Dierks
- Department of Nuclear Medicine, University Hospital Augsburg, Augsburg, Germany
| | - Sabrina Katzdobler
- German Center for Neurodegenerative Diseases (DZNE) Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Department of Neurology, University Hospital of Munich, LMU, Munich, Germany
| | - Martin Klietz
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Johannes Levin
- German Center for Neurodegenerative Diseases (DZNE) Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Department of Neurology, University Hospital of Munich, LMU, Munich, Germany
| | - Nima Mahmoudi
- Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Andreas Rinscheid
- Medical Physics and Radiation Protection, University Hospital Augsburg, Augsburg, Germany
| | | | | | - Christine Schneider
- Department of Neurology and Clinical Neurophysiology, University Hospital Augsburg, Augsburg, Germany
| | - Sophia Stöcklein
- Department of Radiology, University Hospital of Munich, LMU, Munich, Germany
| | - Phoebe G Spetsieris
- The Feinstein Institutes for Medical Research Manhasset, Manhasset, New York, USA
| | - David Eidelberg
- The Feinstein Institutes for Medical Research Manhasset, Manhasset, New York, USA
| | - Mike P Wattjes
- Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Osama Sabri
- Department of Nuclear Medicine, University Hospital of Leipzig, Leipzig, Germany
| | - Henryk Barthel
- Department of Nuclear Medicine, University Hospital of Leipzig, Leipzig, Germany
| | - Günter Höglinger
- Department of Neurology, Hannover Medical School, Hannover, Germany
- German Center for Neurodegenerative Diseases (DZNE) Munich, Munich, Germany
- Department of Neurology, University Hospital of Munich, LMU, Munich, Germany
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Timmers ER, Klamer MR, Marapin RS, Lammertsma AA, de Jong BM, Dierckx RAJO, Tijssen MAJ. [ 18F]FDG PET in conditions associated with hyperkinetic movement disorders and ataxia: a systematic review. Eur J Nucl Med Mol Imaging 2023; 50:1954-1973. [PMID: 36702928 PMCID: PMC10199862 DOI: 10.1007/s00259-023-06110-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 01/05/2023] [Indexed: 01/28/2023]
Abstract
PURPOSE To give a comprehensive literature overview of alterations in regional cerebral glucose metabolism, measured using [18F]FDG PET, in conditions associated with hyperkinetic movement disorders and ataxia. In addition, correlations between glucose metabolism and clinical variables as well as the effect of treatment on glucose metabolism are discussed. METHODS A systematic literature search was performed according to PRISMA guidelines. Studies concerning tremors, tics, dystonia, ataxia, chorea, myoclonus, functional movement disorders, or mixed movement disorders due to autoimmune or metabolic aetiologies were eligible for inclusion. A PubMed search was performed up to November 2021. RESULTS Of 1240 studies retrieved in the original search, 104 articles were included. Most articles concerned patients with chorea (n = 27), followed by ataxia (n = 25), dystonia (n = 20), tremor (n = 8), metabolic disease (n = 7), myoclonus (n = 6), tics (n = 6), and autoimmune disorders (n = 5). No papers on functional movement disorders were included. Altered glucose metabolism was detected in various brain regions in all movement disorders, with dystonia-related hypermetabolism of the lentiform nuclei and both hyper- and hypometabolism of the cerebellum; pronounced cerebellar hypometabolism in ataxia; and striatal hypometabolism in chorea (dominated by Huntington disease). Correlations between clinical characteristics and glucose metabolism were often described. [18F]FDG PET-showed normalization of metabolic alterations after treatment in tremors, ataxia, and chorea. CONCLUSION In all conditions with hyperkinetic movement disorders, hypo- or hypermetabolism was found in multiple, partly overlapping brain regions, and clinical characteristics often correlated with glucose metabolism. For some movement disorders, [18F]FDG PET metabolic changes reflected the effect of treatment.
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Affiliation(s)
- Elze R Timmers
- Department of Neurology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
- Expertise Center Movement Disorders Groningen, University Medical Center Groningen (UMCG), PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Marrit R Klamer
- Department of Neurology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
- Expertise Center Movement Disorders Groningen, University Medical Center Groningen (UMCG), PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Ramesh S Marapin
- Department of Neurology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
- Expertise Center Movement Disorders Groningen, University Medical Center Groningen (UMCG), PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Adriaan A Lammertsma
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen (UMCG), University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Bauke M de Jong
- Department of Neurology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Rudi A J O Dierckx
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen (UMCG), University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands
| | - Marina A J Tijssen
- Department of Neurology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB, Groningen, the Netherlands.
- Expertise Center Movement Disorders Groningen, University Medical Center Groningen (UMCG), PO Box 30.001, 9700 RB, Groningen, the Netherlands.
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Sharma VK, Singh TG, Mehta V, Mannan A. Biomarkers: Role and Scope in Neurological Disorders. Neurochem Res 2023; 48:2029-2058. [PMID: 36795184 DOI: 10.1007/s11064-023-03873-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 02/17/2023]
Abstract
Neurological disorders pose a great threat to social health and are a major cause for mortality and morbidity. Effective drug development complemented with the improved drug therapy has made considerable progress towards easing symptoms associated with neurological illnesses, yet poor diagnosis and imprecise understanding of these disorders has led to imperfect treatment options. The scenario is complicated by the inability to extrapolate results of cell culture studies and transgenic models to clinical applications which has stagnated the process of improving drug therapy. In this context, the development of biomarkers has been viewed as beneficial to easing various pathological complications. A biomarker is measured and evaluated in order to gauge the physiological process or a pathological progression of a disease and such a marker can also indicate the clinical or pharmacological response to a therapeutic intervention. The development and identification of biomarkers for neurological disorders involves several issues including the complexity of the brain, unresolved discrepant data from experimental and clinical studies, poor clinical diagnostics, lack of functional endpoints, and high cost and complexity of techniques yet research in the area of biomarkers is highly desired. The present work describes existing biomarkers for various neurological disorders, provides support for the idea that biomarker development may ease our understanding underlying pathophysiology of these disorders and help to design and explore therapeutic targets for effective intervention.
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Affiliation(s)
- Vivek Kumar Sharma
- Chitkara College of Pharmacy, Chitkara University, Chandigarh, Punjab, 140401, India.,Government College of Pharmacy, Rohru, Shimla, Himachal Pradesh, 171207, India
| | - Thakur Gurjeet Singh
- Chitkara College of Pharmacy, Chitkara University, Chandigarh, Punjab, 140401, India.
| | - Vineet Mehta
- Government College of Pharmacy, Rohru, Shimla, Himachal Pradesh, 171207, India
| | - Ashi Mannan
- Chitkara College of Pharmacy, Chitkara University, Chandigarh, Punjab, 140401, India
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Arnone A, Allocca M, Di Dato R, Puccini G, Laghai I, Rubino F, Nerattini M, Ramat S, Lombardi G, Ferrari C, Bessi V, Sorbi S, De Cristofaro MT, Polito C, Berti V. FDG PET in the differential diagnosis of degenerative parkinsonian disorders: usefulness of voxel-based analysis in clinical practice. Neurol Sci 2022; 43:5333-5341. [PMID: 35697965 PMCID: PMC9385817 DOI: 10.1007/s10072-022-06166-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/23/2022] [Indexed: 11/30/2022]
Abstract
Abstract
Background
The early differential diagnosis among neurodegenerative parkinsonian disorders becomes essential to set up the correct clinical-therapeutic approach. The increased utilization of [18F] fluoro-deoxy-glucose positron emission tomography (FDG PET) and the pressure for cost-effectiveness request a systematic evaluation and a validation of its utility in clinical practice. This retrospective study aims to consider the contribution, in terms of increasing accuracy and increasing diagnostic confidence, of voxel-based FDG PET analyses in the differential diagnosis of these disorders, including Parkinson’s disease, multiple system atrophy, progressive supranuclear palsy, and cortico-basal syndrome.
Method
Eighty-three subjects with a clinically confirmed diagnosis of degenerative parkinsonian disorders who underwent FDG brain PET/CT were selected. A voxel-based analysis was set up using statistical parametric mapping (SPM) on MATLAB to produce maps of brain hypometabolism and relative hypermetabolism. Four nuclear physicians (two expert and two not expert), blinded to the patients’ symptoms, other physicians’ evaluations, and final clinical diagnosis, independently evaluated all data by visual assessment and by adopting metabolic maps.
Results
In not-expert evaluators, the support of both hypometabolism and hypermetabolism maps results in a significant increase in diagnostic accuracy as well as clinical confidence. In expert evaluators, the increase in accuracy and in diagnostic confidence is mainly supported by hypometabolism maps alone.
Conclusions
In this study, we demonstrated the additional value of combining voxel-based analyses with qualitative assessment of brain PET images. Moreover, maps of relative hypermetabolism can also make their contribution in clinical practice, particularly for less experienced evaluators.
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Affiliation(s)
- Annachiara Arnone
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy.
| | - Michela Allocca
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Rossella Di Dato
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Giulia Puccini
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Iashar Laghai
- Department of Nuclear Medicine, Hospital of Prato, Via Suor Niccolina Infermiera, 20/22, 59100, Prato, Italy
| | - Federica Rubino
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Matilde Nerattini
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Silvia Ramat
- Parkinson Unit, Department of NeuroMuscular- Skeletal and Sensorial Organs, AOU Careggi, Florence, Italy
| | - Gemma Lombardi
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Camilla Ferrari
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Valentina Bessi
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Sandro Sorbi
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Maria Teresa De Cristofaro
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
| | - Cristina Polito
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Valentina Berti
- Nuclear Medicine Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50134, Florence, Italy
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Comparison of 18 F-DOPA and 18 F-DTBZ for PET/CT Imaging of Idiopathic Parkinson Disease. Clin Nucl Med 2022; 47:931-935. [PMID: 35961651 DOI: 10.1097/rlu.0000000000004361] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to compare 2 imaging tracers, 18 F-DOPA and 18 F-DTBZ, for PET/CT imaging in idiopathic Parkinson disease (PD). METHODS We recruited 32 PD patients and 12 healthy controls in this study. All subjects underwent both 18 F-DOPA and 18 F-DTBZ PET/CT, and the results were interpreted by visual analysis and semiquantitative analysis (specific uptake ratios [SURs]). A 1-way analysis of variance was used to compare the clinical data and the SURs among the patients at different stages. Regression analysis was performed to analyze the correlation between the SURs and the clinical data. RESULTS Among the PD patients, there were 7 patients in Hoehn and Yahr stage I, 14 patients in stage II, and 11 patients in stage III. Linear correlation was found in striatal SURs between the 2 tracers ( P < 0.05). In patients of early stages, the striatal SUR decrease percent of 2 tracers had no statistical difference (paired t test, P > 0.05). By initial visual analysis, all the patients were interpreted as positive with 18 F-DBTZ (6 unilaterally, 26 bilaterally), and 31 cases were regarded as positive with 18 F-DOPA (8 unilaterally, 23 bilaterally). After setting the upper limit of SUR images with the putamen SURs of healthy controls (SUR T ), all patients were interpreted as positive with both tracers ( 18 F-DTBZ: 5 unilaterally, 27 bilaterally; 18 F-DOPA: 4 unilaterally, 28 bilaterally). CONCLUSION 18 F-DTBZ and 18 F-DOPA could reflect the same level of dopaminergic neuron degeneration for PD in early stages, and they have the consistent visual analysis results.
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Chun K. Dual phase 18F-FP CIT PET and 99mTc- ECD SPECT findings of Huntington's disease. Radiol Case Rep 2022; 17:2460-2463. [PMID: 35586167 PMCID: PMC9108749 DOI: 10.1016/j.radcr.2022.03.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 11/15/2022] Open
Abstract
Fluorine-18 N-3-fluoropropyl-2-beta-carboxymethoxy-3-beta-(4-iodophenyl) nortropane (18F- FP CIT) has been used for the differential diagnosis of atypical parkinsonian disorders, and Technetium 99m ethyl cysteinate dimer (99mTc- ECD) has been used for evaluation of cerebral blood flow. A 60-year-old female with a history of Huntington's disease (HD) with full mutation of cytosine-adenine-guanine (GAG) 18/43 repeats underwent early and late 18F- FP CIT positron emission tomography/computed tomography (PET/CT) and 99mTc- ECD single-photon emission computed tomography (SPECT). The 18F-FP CIT PET/CT showed decreased uptake in both basal ganglia, both frontal and parietotemporal lobes at early images, and decreased presynaptic dopamine transporter (DAT) binding in both ventral & posterior putamen at late images. 99mTc- ECD SPECT showed decreased perfusion in both basal ganglia, both frontal and temporal lobes. Early 18F- FP CIT PET/CT and 99mTc- ECD SPECT images showed similar findings in Huntington's disease.
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Affiliation(s)
- KyungAh Chun
- Department of Nuclear Medicine, Yeungnam University Hospital, Namgu Daemyung 5-dong 317-1, 705-717, Daegu, Korea
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9
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Utrera-Costero A, Martinez-Sanchis B, Sopena-Novales P, Bello-Arques P. The Role of Imaging Studies in Favor of Possible Cerebellar Multiple System Atrophy: A Case Study. Clin Nucl Med 2021; 46:e603-e604. [PMID: 34172603 DOI: 10.1097/rlu.0000000000003767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT We report a 64-year-old woman whose history started with urinary incontinence and neurological symptoms (cognitive impairment, dysarthria, and gait difficulties). The 18F-FDG PET/CT showed hypometabolism of the whole cerebellum. Then 6 months later, she developed tremor, postural instability, and ataxia, so she was hospitalized to complete study. Blood tests (antibodies, vitamin B12, copper, genetic test of spinocerebellar ataxia) did not have alterations, but imaging studies, along with clinical symptoms, provide the diagnosis of possible multiple system atrophy.
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Affiliation(s)
- Ana Utrera-Costero
- From the Department of Nuclear Medicine, Hospital Universitari i Politècnic La Fe, Valencia, Spain
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Bao SC, Chen C, Yuan K, Yang Y, Tong RKY. Disrupted cortico-peripheral interactions in motor disorders. Clin Neurophysiol 2021; 132:3136-3151. [PMID: 34749233 DOI: 10.1016/j.clinph.2021.09.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/08/2021] [Accepted: 09/19/2021] [Indexed: 11/15/2022]
Abstract
Motor disorders may arise from neurological damage or diseases at different levels of the hierarchical motor control system and side-loops. Altered cortico-peripheral interactions might be essential characteristics indicating motor dysfunctions. By integrating cortical and peripheral responses, top-down and bottom-up cortico-peripheral coupling measures could provide new insights into the motor control and recovery process. This review first discusses the neural bases of cortico-peripheral interactions, and corticomuscular coupling and corticokinematic coupling measures are addressed. Subsequently, methodological efforts are summarized to enhance the modeling reliability of neural coupling measures, both linear and nonlinear approaches are introduced. The latest progress, limitations, and future directions are discussed. Finally, we emphasize clinical applications of cortico-peripheral interactions in different motor disorders, including stroke, neurodegenerative diseases, tremor, and other motor-related disorders. The modified interaction patterns and potential changes following rehabilitation interventions are illustrated. Altered coupling strength, modified coupling directionality, and reorganized cortico-peripheral activation patterns are pivotal attributes after motor dysfunction. More robust coupling estimation methodologies and combination with other neurophysiological modalities might more efficiently shed light on motor control and recovery mechanisms. Future studies with large sample sizes might be necessary to determine the reliabilities of cortico-peripheral interaction measures in clinical practice.
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Affiliation(s)
- Shi-Chun Bao
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong
| | - Cheng Chen
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong
| | - Kai Yuan
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong
| | - Yuan Yang
- Stephenson School of Biomedical Engineering, University of Oklahoma, Tulsa, OK, USA; Laureate Institute for Brain Research, Tulsa, OK, USA; Department of Physical Therapy and Human Movement Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Raymond Kai-Yu Tong
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong.
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11
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Provost K, La Joie R, Strom A, Iaccarino L, Edwards L, Mellinger TJ, Pham J, Baker SL, Miller BL, Jagust WJ, Rabinovici GD. Crossed cerebellar diaschisis on 18F-FDG PET: Frequency across neurodegenerative syndromes and association with 11C-PIB and 18F-Flortaucipir. J Cereb Blood Flow Metab 2021; 41:2329-2343. [PMID: 33691512 PMCID: PMC8393295 DOI: 10.1177/0271678x211001216] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/08/2021] [Accepted: 02/15/2021] [Indexed: 11/16/2022]
Abstract
We used 18F-FDG-PET to investigate the frequency of crossed cerebellar diaschisis (CCD) in 197 patients with various syndromes associated with neurodegenerative diseases. In a subset of 117 patients, we studied relationships between CCD and cortical asymmetry of Alzheimer's pathology (β-amyloid (11C-PIB) and tau (18F-Flortaucipir)). PET images were processed using MRIs to derive parametric SUVR images and define regions of interest. Indices of asymmetry were calculated in the cerebral cortex, basal ganglia and cerebellar cortex. Across all patients, cerebellar 18F-FDG asymmetry was associated with reverse asymmetry of 18F-FDG in the cerebral cortex (especially frontal and parietal areas) and basal ganglia. Based on our operational definition (cerebellar asymmetry >3% with contralateral supratentorial hypometabolism), significant CCD was present in 47/197 (24%) patients and was most frequent in corticobasal syndrome and semantic and logopenic variants of primary progressive aphasia. In β-amyloid-positive patients, mediation analyses showed that 18F-Flortaucipir cortical asymmetry was associated with cerebellar 18F-FDG asymmetry, but that cortical 18F-FDG asymmetry mediated this relationship. Analysis of 18F-FDG-SUVR values suggested that CCD might also occur in the absence of frank cerebellar 18F-FDG asymmetry due to symmetrical supratentorial degeneration resulting in a bilateral diaschisis process.
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Affiliation(s)
- Karine Provost
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Renaud La Joie
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Amelia Strom
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Leonardo Iaccarino
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Lauren Edwards
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Taylor J Mellinger
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Julie Pham
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | | | - Bruce L Miller
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - William J Jagust
- Lawrence Berkeley National Laboratory, Berkeley, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
| | - Gil D Rabinovici
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
- Lawrence Berkeley National Laboratory, Berkeley, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
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12
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Paternoster L, Soblet J, Aeby A, De Tiège X, Goldman S, Yue WW, Coppens S, Smits G, Vilain C, Deconinck N. Novel homozygous variant of carbonic anhydrase 8 gene expanding the phenotype of cerebellar ataxia, mental retardation, and disequilibrium syndrome subtype 3. Am J Med Genet A 2020; 182:2685-2693. [PMID: 32808436 DOI: 10.1002/ajmg.a.61805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 11/11/2022]
Abstract
We report the case of an 11-year-old Syrian girl born to consanguineous parents, who presents an ataxic gait from early childhood. On clinical examination, she presented a severe static - kinetic cerebellar syndrome, walking without support is possible for short distances only. Strikingly, three consecutive MRIs did not show any sign of cerebellar abnormalities, but a brain positron emission tomography (PET) using [18F]-fluorodeoxyglucose (FDG) demonstrated a clear decrease in glucose metabolism in the cerebellum as well as the anterior and medial temporal lobe bilaterally. A clinical exome analysis identified a novel homozygous c.251A > G (p.Asn84Ser) likely pathogenic variant in the carbonic anhydrase 8 (CA8) gene. CA8 mutations cause cerebellar ataxia, mental retardation, and disequilibrium syndrome subtype 3 (CAMRQ3), a rare genetically autosomal recessive disorder, only described in four families, so far with the frequent observation of quadrupedal gait. The proband differed with other reported CA8 mutations by the absence of clear cerebellar signs on brain MRI and the presence of focal seizures. This report expands the clinical spectrum associated with mutations in CA8 and illustrates the possible discrepancy between (mild) neuro-radiological images (MRI) and (severe) clinical phenotype in young individuals. In contrast, the observation of clear cerebellar abnormal metabolic findings suggests that the FDG-PET scan may be used as an early marker for hereditary ataxia.
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Affiliation(s)
- Lionel Paternoster
- Faculté de Médecine ULB, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Julie Soblet
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Department of Genetics, Hôpital Erasme, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Alec Aeby
- Department of Pediatric Neurology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Xavier De Tiège
- Department of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium.,Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Serge Goldman
- Department of Functional Neuroimaging, Service of Nuclear Medicine, CUB Hôpital Erasme, Université libre de Bruxelles (ULB), Brussels, Belgium.,Laboratoire de Cartographie fonctionnelle du Cerveau, ULB Neuroscience Institute, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Wyatt W Yue
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Sandra Coppens
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Neuromuscular Reference Center, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Guillaume Smits
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Department of Genetics, Hôpital Erasme, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Catheline Vilain
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Department of Genetics, Hôpital Erasme, ULB Center of Human Genetics, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Nicolas Deconinck
- Department of Pediatric Neurology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Neuromuscular Reference Center, Université Libre de Bruxelles (ULB), Brussels, Belgium
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13
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Severe Contralateral Striatal Hypometabolism in a Case of Diabetic Nonketotic Hyperglycemic Hemichorea on 18F-FDG PET/CT Brain. Clin Nucl Med 2019; 45:e117-e119. [PMID: 31714279 DOI: 10.1097/rlu.0000000000002844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Chorea induced by diabetic nonketotic hyperglycemia is a rare and poorly understood entity with a favorable prognosis after correction of the hyperglycemia. We present a case of elderly diabetic woman with poorly controlled blood glucose levels, presenting with choreiform movements limited to the right side. F-FDG PET/CT showed marked hypometabolism in the basal ganglia contralateral to the side with hemichorea. The metabolic dysfunctions lead to nonketotic hyperglycemic chorea, although poorly understood; the index case demonstrated severe glucose hypometabolism in the striatum and adds to the other reported differential diagnoses for striatal hypometabolism.
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14
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Sun Y, Liu C, Chen Z, Li B, Lv Z, Wang J, Lou J, Tang J, Wang Y, Zhang G, Liu X. A phase 2, open-label, multi-center study to evaluate the efficacy and safety of 99mTc-TRODAT-1 SPECT to detect Parkinson’s disease. Ann Nucl Med 2019; 34:31-37. [DOI: 10.1007/s12149-019-01412-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/07/2019] [Indexed: 11/29/2022]
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15
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Roy A, Coombes SA, Chung JW, Archer DB, Okun MS, Hess CW, Wagle Shukla A, Vaillancourt DE. Cortical dynamics within and between parietal and motor cortex in essential tremor. Mov Disord 2018; 34:95-104. [PMID: 30345712 DOI: 10.1002/mds.27522] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/08/2018] [Accepted: 09/12/2018] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Evidence from functional imaging in essential tremor suggests that activity within parietal and motor cortices may be associated with worsening of tremor at increased visual feedback. OBJECTIVES Examine how cortical oscillations within these regions and the connectivity between these regions is associated with worsening of tremor in essential tremor in response to high visual feedback. METHOD The study included 24 essential tremor participants and 17 controls. We measured cortical activity and tremor magnitude at low and high feedback conditions. Cortical activity was measured using high-density electroencephalogram and isolated using source localization. RESULTS Changes in power across feedback in the 4-12 Hz and 12-30 Hz bands were reduced within the contralateral motor cortex of essential tremor patients compared to controls. The 12-30 Hz bidirectional connectivity between the parietal and contralateral motor cortex was decreased in essential tremor patients. Worsening of tremor from low to high visual feedback was associated with 4-12 Hz activity in contralateral motor cortex. The greatest separation between groups was found when using the difference of the contralateral motor cortex activity at high and low feedback, rather than either feedback condition alone. CONCLUSION Our findings provide new evidence that tremor in essential tremor is associated with reduced power across feedback in the motor cortex and reduced connectivity between the parietal and motor cortices. Combined with previous work on the cerebellar-thalamo-cortical motor circuit, our findings suggest that the network level disturbances associated with essential tremor extend to the cortico-cortical pathway between the parietal cortex and motor cortex. © 2018 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Arnab Roy
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA
| | - Stephen A Coombes
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA
| | - Jae Woo Chung
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA
| | - Derek B Archer
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA
| | - Michael S Okun
- Department of Neurology and Fixel Center for Neurological Diseases and the Program for Movement Disorders and Neurorestoration, University of Florida, Gainesville, Florida, USA
| | - Christopher W Hess
- Department of Neurology and Fixel Center for Neurological Diseases and the Program for Movement Disorders and Neurorestoration, University of Florida, Gainesville, Florida, USA
| | - Aparna Wagle Shukla
- Department of Neurology and Fixel Center for Neurological Diseases and the Program for Movement Disorders and Neurorestoration, University of Florida, Gainesville, Florida, USA
| | - David E Vaillancourt
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, USA.,Department of Neurology and Fixel Center for Neurological Diseases and the Program for Movement Disorders and Neurorestoration, University of Florida, Gainesville, Florida, USA.,Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
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16
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Pieterman M, Adams S, Jog M. Method of Levodopa Response Calculation Determines Strength of Association With Clinical Factors in Parkinson Disease. Front Neurol 2018; 9:260. [PMID: 29867708 PMCID: PMC5966537 DOI: 10.3389/fneur.2018.00260] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/03/2018] [Indexed: 11/13/2022] Open
Abstract
Background The levodopa challenge test is routinely used in Parkinson disease (PD) to determine a patient’s motor improvement following levodopa administration [levodopa response (LR)]. LR is most commonly reported as a percent OFF to ON change in the Unified Parkinson Disease Rating Scale (UPDRS) part III score, and occasionally as an absolute difference in score. This inconsistency in LR determination alters how clinical factors such as patient age and disease duration are understood in relation to LR in PD. Objective The aim of this study was to compare the calculation of the LR as either a percent change or difference in UPDRS-III motor score between OFF and ON medication. These two scores were then used to correlate to disease duration, patient age, levodopa duration, levodopa equivalent dose (LED), OFF score, cognition, mood, gait, and quality of life (QOL). Methods 70 PD patients underwent the levodopa challenge test. The UPDRS-III motor examination was performed in the defined OFF and ON medication states to determine LR. Each patient was assessed after 12–14 h without anti-parkinsonian medication and then given three 100/25 mg levodopa/carbidopa tablets. LR was reported as both a difference in score [OFF − ON; absolute LR (aLR)] and as a percent change in score [(OFF − ON)/OFF*100%; %LR]. Patients completed the following non-motor symptom assessment scales: Montreal Cognitive Assessment, Freezing of Gait Questionnaire, Activities-specific Balance Confidence Scale, Parkinson’s Disease Questionnaire, and Geriatric Depression Scale. The effect of the LR calculation method was correlated to the clinical measures. Results The aLR was significantly associated with disease duration (r = 0.40), levodopa duration (r = 0.47), OFF motor score (r = 0.58), and LED (r = 0.31), but not age. The aLR was also found to have a significant relationship with clinical scales assessing cognition (r = 0.41), freezing of gait (r = 0.35), QOL (r = 0.40), and depression (r = 0.30). By contrast, the more commonly used %LR demonstrated no significant relationships with any of the variables tested. Conclusion Although the %LR is more commonly employed in clinical protocols and research studies, the aLR is the superior method for reporting motor response to levodopa in PD given its significant associations with the clinical factors evaluated.
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Affiliation(s)
- Marcus Pieterman
- Department of Clinical Neurological Sciences, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Scott Adams
- School of Communication Sciences and Disorders, University of Western Ontario, Canada.,Department of Clinical Neurological Sciences, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Mandar Jog
- Department of Clinical Neurological Sciences, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
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17
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Finberg JPM, Aluf Y, Loboda Y, Nakhleh MK, Jeries R, Abud-Hawa M, Zubedat S, Avital A, Khatib S, Vaya J, Haick H. Altered Volatile Organic Compound Profile in Transgenic Rats Bearing A53T Mutation of Human α-Synuclein: Comparison with Dopaminergic and Serotonergic Denervation. ACS Chem Neurosci 2018; 9:291-297. [PMID: 29017011 DOI: 10.1021/acschemneuro.7b00318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Early diagnosis of Parkinson's disease (PD) is of great importance due its progressive phenotype. Neuroprotective drugs could potentially slow down disease progression if used at early stages. Previously, we have reported an altered content of volatile organic compounds (VOCs) in the breath of rats following a 50% reduction in striatal dopamine (DA) content induced by 6-hydroxydopamine. We now report on the difference in the breath-print and content of VOCs between rats with mild and severe lesions of DA neurons, serotonergic neuronal lesions, and transgenic (Tg) rats carrying the PD-producing A53T mutation of the SNCA (α-synuclein) gene. The Tg rats had an increased content of 3-octen-1-ol and 4-chloro-3-methyl phenol in blood, while in brain tissue, hexanal, hexanol, and 2,3-octanedione were present in controls but absent in Tg rats. Levels of 1-heptyl-2-methyl cyclopropane were increased in brain tissue of Tg rats. The data confirm the potential of breath analysis for detection of human idiosyncratic as well as autosomal dominant PD.
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Affiliation(s)
- John P. M. Finberg
- Neuroscience Department,
Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Yuval Aluf
- Neuroscience Department,
Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Yelena Loboda
- Neuroscience Department,
Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Morad K. Nakhleh
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Raneen Jeries
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Manal Abud-Hawa
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Salman Zubedat
- Neuroscience Department,
Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Avi Avital
- Neuroscience Department,
Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Soliman Khatib
- Laboratory of Natural Medicinal Compounds, Migal-Galilee Research
Institute, Kiryat Shmona and Tel Hai College, Qiryat Shemona, 1220800, Israel
| | - Jacob Vaya
- Laboratory of Natural Medicinal Compounds, Migal-Galilee Research
Institute, Kiryat Shmona and Tel Hai College, Qiryat Shemona, 1220800, Israel
| | - Hossam Haick
- Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
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18
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Neurophysiology and neurochemistry of corticobasal syndrome. J Neurol 2018; 265:991-998. [PMID: 29307007 DOI: 10.1007/s00415-017-8731-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/27/2017] [Accepted: 12/29/2017] [Indexed: 10/18/2022]
Abstract
Corticobasal syndrome is a rare neurodegenerative disorder, which presents with a progressive, asymmetrical, akinetic rigid syndrome and early cortical signs. However, clinical, pathological, and electrophysiological heterogeneity makes the understanding of this syndrome challenging. Corticobasal syndrome can have various pathological substrates including corticobasal degeneration, Alzheimer's disease, Fronto-temporal degeneration with TDP inclusions, Creutzfeldt-Jakob disease, and progressive supranuclear palsy (PSP). Furthermore, tools such as transcranial magnetic stimulation (TMS) and functional neuroimaging techniques like PET and SPECT have not been adequately used to supplement the clinico-pathological heterogeneity. TMS studies in CBS have revealed changes in cortical excitability and transcortical inhibition. Despite the availability of more than 2 decades, its potential in CBS has not been fully utilized in studying the cortical plasticity and effect of Levodopa on central neurophysiology. PET and SPECT studies in CBS have shown abnormalities in regional glucose metabolism, asymmetrical involvement of presynaptic dopaminergic system, and ascending cholinergic connections to the cortex. While most studies have shown normal D2 receptor-binding activity in striatum of CBS cases, the results have not been unanimous. Functional neuroimaging and TMS studies in CBS have shown the involvement of GABAergic, muscarinic, and dopaminergic systems. In this review, we aim to provide the current state of understanding of central neurophysiology and neurochemistry of CBS using TMS and functional neuroimaging techniques. We also highlight the heterogeneous nature of this disorder and the existing knowledge gaps.
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19
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A Practical Method for the Preparation of 18F-Labeled Aromatic Amino Acids from Nucleophilic [ 18F]Fluoride and Stannyl Precursors for Electrophilic Radiohalogenation. Molecules 2017; 22:molecules22122231. [PMID: 29244780 PMCID: PMC6149761 DOI: 10.3390/molecules22122231] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/05/2017] [Accepted: 12/12/2017] [Indexed: 11/17/2022] Open
Abstract
In a recent contribution of Scott et al., the substrate scope of Cu-mediated nucleophilic radiofluorination with [18F]KF for the preparation of 18F-labeled arenes was extended to aryl- and vinylstannanes. Based on these findings, the potential of this reaction for the production of clinically relevant positron emission tomography (PET) tracers was investigated. To this end, Cu-mediated radiofluorodestannylation using trimethyl(phenyl)tin as a model substrate was re-evaluated with respect to different reaction parameters. The resulting labeling protocol was applied for 18F-fluorination of different electron-rich, -neutral and -poor arylstannyl substrates in RCCs of 16-88%. Furthermore, this method was utilized for the synthesis of 18F-labeled aromatic amino acids from additionally N-Boc protected commercially available stannyl precursors routinely applied for electrophilic radiohalogenation. Finally, an automated synthesis of 6-[18F]fluoro-l-m-tyrosine (6-[18F]FMT), 2-[18F]fluoro-l-tyrosine (2-[18F]F-Tyr), 6-[18F]fluoro-l-3,4-dihydroxyphenylalanine (6-[18F]FDOPA) and 3-O-methyl-6-[18F]FDOPA ([18F]OMFD) was established furnishing these PET probes in isolated radiochemical yields (RCYs) of 32-54% on a preparative scale. Remarkably, the automated radiosynthesis of 6-[18F]FDOPA afforded an exceptionally high RCY of 54 ± 5% (n = 5).
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20
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Abstract
Lithium intoxication is known to induce cognitive deficits along with motor and behavioral changes, even in association with normal serum levels. However, cases with comprehensive neuropsychological assessment of the deficits are rare. In our patient, we initially found severe cognitive deficits, including apraxia and visuo-constructive problems, and temporo-parietal FDG-PET hypometabolism. Neuropsychological and imaging findings were highly suggestive of Alzheimer's disease. However, lithium intoxication was suspected to account for these findings because of a Parkinson's syndrome, despite serum levels being in the upper therapeutic range. This was confirmed as cessation of lithium medication not only let the Parkinson's syndrome disappear, but also lead to dramatic improvements with respect to cognition.
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21
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Lowrie M, Garosi L. Classification of involuntary movements in dogs: Paroxysmal dyskinesias. Vet J 2017; 220:65-71. [DOI: 10.1016/j.tvjl.2016.12.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 12/20/2016] [Accepted: 12/28/2016] [Indexed: 01/04/2023]
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22
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Zischler J, Kolks N, Modemann D, Neumaier B, Zlatopolskiy BD. Alcohol-Enhanced Cu-Mediated Radiofluorination. Chemistry 2017; 23:3251-3256. [DOI: 10.1002/chem.201604633] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Johannes Zischler
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
| | - Niklas Kolks
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
| | - Daniel Modemann
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
| | - Bernd Neumaier
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
| | - Boris D. Zlatopolskiy
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
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23
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Chiu YW, Lee SH, Yeh TH. Diversified psychiatric presentation in a case of progressive supranuclear palsy. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.jcgg.2016.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bhattacharjee S, Shankar PV, Elkider M. Dopamine transporter single-photon emission computed tomography brain scan: A reliable way to distinguish between degenerative and drug-induced parkinsonism. Indian J Nucl Med 2016; 31:249-50. [PMID: 27385908 PMCID: PMC4918501 DOI: 10.4103/0972-3919.183620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Aygun D, Kocabicak E, Yildiz MO, Temel Y. Effect of Age and Disease Duration on the Levodopa Response in Patients with Advanced Parkinson's Disease for Deep Brain Stimulation of the Subthalamic Nucleus. Front Neurol 2016; 7:97. [PMID: 27445964 PMCID: PMC4921481 DOI: 10.3389/fneur.2016.00097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 06/10/2016] [Indexed: 11/13/2022] Open
Abstract
Background Deep brain stimulation (DBS) has become a preferred option for the treatment of motor symptoms in patients with advanced Parkinson’s disease (PD). A good levodopa response (LR) is considered the most important criterion in determining the suitability of a patient for DBS. However, the effect of age and disease duration (DD) on the LR is still a subject of discussion. Objective Here, we investigated the effect of age and DD on the preoperative LR in PD patients to be selected for DBS. Methods From August 2011 to May 2015, 54 consecutive patients (29 men and 25 women) with advanced PD were evaluated for DBS of the STN and included in this retrospective study. Results Thirty-seven patients were found suitable for DBS of the STN and 29 of them underwent bilateral surgery. We found no significant correlation between DD and the LR. However, there was a significant negative correlation between the patients’ age and the LR. Conclusion The results indicate that the patients’ age, rather than DD, has a negative effect on the LR. The study, therefore, indicates that PD patients with an advanced age and with a poor LR are not good candidates for DBS of the STN.
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Affiliation(s)
- Dursun Aygun
- Department of Neurology, Ondokuz Mayis University , Samsun , Turkey
| | - Ersoy Kocabicak
- Department of Neurosurgery, Ondokuz Mayis University, Samsun, Turkey; Department of Neurosurgery, Maastricht Medical Center, Maastricht, Netherlands; Department of Translational Neuroscience, Maastricht Medical Center, Maastricht, Netherlands
| | | | - Yasin Temel
- Department of Neurosurgery, Maastricht Medical Center, Maastricht, Netherlands; Department of Translational Neuroscience, Maastricht Medical Center, Maastricht, Netherlands
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Heller J, Brcina N, Dogan I, Holtbernd F, Romanzetti S, Schulz JB, Schiefer J, Reetz K. Brain imaging findings in idiopathic REM sleep behavior disorder (RBD) - A systematic review on potential biomarkers for neurodegeneration. Sleep Med Rev 2016; 34:23-33. [PMID: 27542516 DOI: 10.1016/j.smrv.2016.06.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/09/2016] [Accepted: 06/16/2016] [Indexed: 01/08/2023]
Abstract
Idiopathic rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia characterized by the loss of physiological atonia of skeletal muscles with abnormal behavior during dream sleep. RBD may be the initial manifestation of neurodegenerative diseases, particularly of α-synucleinopathies such as Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). However, gauging the individual risk of subsequent phenoconversion and making assumptions on the type of disease that may subsequently follow RBD is challenging. Over the past years, a growing number of studies have sought to establish reliable neuroimaging markers to detect neurodegenerative brain changes in RBD subjects at the earliest possible stage. The present review summarizes recent advances in brain imaging in RBD and provides recommendations for the application of currently available structural and functional neuroimaging modalities to monitor disease progression and risk of subsequent phenoconversion. Further imaging research applying multimodal approaches is encouraged to enhance accuracy of prognoses. Additionally, more longitudinal studies are warranted to validate findings from cross-sectional studies on RBD progression and risk of subsequent phenoconversion. Aside from enabling reliable prognoses on a single-subject-level in the near future, this might give further insight into RBD pathophysiology, and finally augment the development of intervention strategies and disease-modifying therapies.
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Affiliation(s)
- Julia Heller
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany; JARA - Institute Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH, Jülich and RWTH Aachen University, Aachen, Germany
| | - Nikolina Brcina
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany
| | - Imis Dogan
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany; JARA - Institute Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH, Jülich and RWTH Aachen University, Aachen, Germany
| | - Florian Holtbernd
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany
| | - Sandro Romanzetti
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany; JARA - Institute Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH, Jülich and RWTH Aachen University, Aachen, Germany
| | - Jörg B Schulz
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany; JARA - Institute Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH, Jülich and RWTH Aachen University, Aachen, Germany
| | - Johannes Schiefer
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany
| | - Kathrin Reetz
- Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, Aachen, Germany; JARA - Institute Molecular Neuroscience and Neuroimaging, Forschungszentrum Jülich GmbH, Jülich and RWTH Aachen University, Aachen, Germany.
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Yap SM, Lynch T, MacMahon P, Murray B. Paraneoplastic Atypical Parkinsonism with Anti-CRMP5 Antibodies and Severe Caudate and Putaminal Hypometabolism on 18-Fluorodeoxyglucose Positron Emission Tomography of the Brain. Mov Disord Clin Pract 2016; 4:263-265. [PMID: 30838264 DOI: 10.1002/mdc3.12370] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 03/25/2016] [Accepted: 04/04/2016] [Indexed: 12/14/2022] Open
Affiliation(s)
- Siew Mei Yap
- Department of Neurology Mater Misericordiae University Hospital Dublin Ireland
| | - Tim Lynch
- Department of Neurology Mater Misericordiae University Hospital Dublin Ireland
| | - Peter MacMahon
- Department of Radiology Mater Misericordiae University Hospital Dublin Ireland
| | - Brian Murray
- Department of Neurology Mater Misericordiae University Hospital Dublin Ireland
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Coulombe K, Saint-Pierre M, Cisbani G, St-Amour I, Gibrat C, Giguère-Rancourt A, Calon F, Cicchetti F. Partial neurorescue effects of DHA following a 6-OHDA lesion of the mouse dopaminergic system. J Nutr Biochem 2016; 30:133-42. [DOI: 10.1016/j.jnutbio.2015.11.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 11/10/2015] [Accepted: 11/20/2015] [Indexed: 01/12/2023]
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Zlatopolskiy BD, Zischler J, Urusova EA, Endepols H, Kordys E, Frauendorf H, Mottaghy FM, Neumaier B. A Practical One-Pot Synthesis of Positron Emission Tomography (PET) Tracers via Nickel-Mediated Radiofluorination. ChemistryOpen 2015; 4:457-62. [PMID: 26478840 PMCID: PMC4603406 DOI: 10.1002/open.201500056] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Indexed: 12/28/2022] Open
Abstract
Recently a novel method for the preparation of (18)F-labeled arenes via oxidative [(18)F]fluorination of easily accessible and sufficiently stable nickel complexes with [(18)F]fluoride under exceptionally mild reaction conditions was published. The suitability of this procedure for the routine preparation of clinically relevant positron emission tomography (PET) tracers, 6-[(18)F]fluorodopamine (6-[(18)F]FDA), 6-[(18)F]fluoro-l-DOPA (6-[(18)F]FDOPA) and 6-[(18)F]fluoro-m-tyrosine (6-[(18)F]FMT), was evaluated. The originally published base-free method was inoperative. However, a "low base" protocol afforded protected radiolabeled intermediates in radiochemical conversions (RCCs) of 5-18 %. The subsequent deprotection step proceeded almost quantitatively (>95 %). The simple one-pot two-step procedure allowed the preparation of clinical doses of 6-[(18)F]FDA and 6-[(18)F]FDOPA within 50 min (12 and 7 % radiochemical yield, respectively). In an unilateral rat model of Parkinsons disease, 6-[(18)F]FDOPA with high specific activity (175 GBq μmol(-1)) prepared using the described nickel-mediated radiofluorination was compared to 6-[(18)F]FDOPA with low specific activity (30 MBq μmol(-1)) produced via conventional electrophilic radiofluorination. Unexpectedly both tracer variants displayed very similar in vivo properties with respect to signal-to-noise ratio and brain distribution, and consequently, the quality of the obtained PET images was almost identical.
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Affiliation(s)
- Boris D Zlatopolskiy
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
| | - Johannes Zischler
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
| | - Elizaveta A Urusova
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
- Clinic of Nuclear Medicine, RWTH Aachen UniversityPauwelsstraße 30, 52074, Aachen, Germany
| | - Heike Endepols
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
| | - Elena Kordys
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
| | - Holm Frauendorf
- Institute of Organic & Biomolecular Chemistry, Georg-August UniversityTammannstr. 2, 37077, Göttingen, Germany
| | - Felix M Mottaghy
- Clinic of Nuclear Medicine, RWTH Aachen UniversityPauwelsstraße 30, 52074, Aachen, Germany
- Department of Nuclear Medicine, Maastricht University Medical CenterPO Box 616, 6200, MD Maastricht, The Netherlands
| | - Bernd Neumaier
- Institute of Radiochemistry & Experimental Molecular Imaging, University Clinic CologneKerpener Str. 62, 50937, Cologne, Germany
- Max Planck Institute for Metabolism ResearchGleueler Str. 50, 50931, Cologne, Germany
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Speech disorders reflect differing pathophysiology in Parkinson’s disease, progressive supranuclear palsy and multiple system atrophy. J Neurol 2015; 262:992-1001. [DOI: 10.1007/s00415-015-7671-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/20/2015] [Accepted: 02/06/2015] [Indexed: 01/09/2023]
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Nakhleh MK, Badarny S, Winer R, Jeries R, Finberg J, Haick H. Distinguishing idiopathic Parkinson's disease from other parkinsonian syndromes by breath test. Parkinsonism Relat Disord 2014; 21:150-3. [PMID: 25511331 DOI: 10.1016/j.parkreldis.2014.11.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 11/12/2014] [Accepted: 11/27/2014] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Diagnosis of different parkinsonian syndromes is linked with high misdiagnosis rates and various confounding factors. This is particularly problematic in its early stages. With this in mind, the current pilot study aimed to distinguish between Idiopathic Parkinson's Disease (iPD), other Parkinsonian syndromes (non-iPD) and healthy subjects, by a breath test that analyzes the exhaled volatile organic compounds using a highly sensitive nanoarray. METHODS Breath samples of 44 iPD, 16 non-iPD patients and 37 healthy controls were collected. The samples were passed over a nanoarray and the resulting electrical signals were analyzed with discriminant factor analysis as well as by a K-fold cross-validation method, to test the accuracy of the model. RESULTS Comparison of non-iPD with iPD states yielded 88% sensitivity, 88% accuracy, and 88% Receiver Operating Characteristic area under the curve in the training set samples with known identity. The validation set of this comparison scored 81% sensitivity and accuracy and 92% negative predictive value. Comparison between atypical parkinsonism states and healthy subjects scored 94% sensitivity and 85% accuracy in the training set samples with known identity. The validation set of this comparison scored 81% sensitivity and 78% accuracy. The obtained results were not affected by l-Dopa or MAO-B inhibitor treatment. CONCLUSIONS Exhaled breath analysis with nanoarray is a promising approach for a non-invasive, inexpensive, and portable technique for differentiation between different Parkinsonian states. A larger cohort is required in order to establish the clinical usefulness of the method.
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Affiliation(s)
- M K Nakhleh
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - S Badarny
- Movement Disorders Clinic, Department of Neurology, Carmel Medical Center, and Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
| | - R Winer
- Movement Disorders Clinic, Department of Neurology, Carmel Medical Center, and Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - R Jeries
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - J Finberg
- Department of Molecular Pharmacology, Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 31096, Israel
| | - H Haick
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
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Abnormal high-frequency burst firing of cerebellar neurons in rapid-onset dystonia-parkinsonism. J Neurosci 2014; 34:11723-32. [PMID: 25164667 DOI: 10.1523/jneurosci.1409-14.2014] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Loss-of-function mutations in the α3 isoform of the Na(+)/K(+) ATPase (sodium pump) are responsible for rapid-onset dystonia parkinsonism (DYT12). Recently, a pharmacological model of DYT12 was generated implicating both the cerebellum and basal ganglia in the disorder. Notably, partially blocking sodium pumps in the cerebellum was necessary and sufficient for induction of dystonia. Thus, a key question that remains is how partially blocking sodium pumps in the cerebellum induces dystonia. In vivo recordings from dystonic mice revealed abnormal high-frequency bursting activity in neurons of the deep cerebellar nuclei (DCN), which comprise the bulk of cerebellar output. In the same mice, Purkinje cells, which provide strong inhibitory drive to DCN cells, also fired in a similarly erratic manner. In vitro studies demonstrated that Purkinje cells are highly sensitive to sodium pump dysfunction that alters the intrinsic pacemaking of these neurons, resulting in erratic burst firing similar to that identified in vivo. This abnormal firing abates when sodium pump function is restored and dystonia caused by partial block of sodium pumps can be similarly alleviated. These findings suggest that persistent high-frequency burst firing of cerebellar neurons caused by sodium pump dysfunction underlies dystonia in this model of DYT12.
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Alongi P, Iaccarino L, Perani D. PET Neuroimaging: Insights on Dystonia and Tourette Syndrome and Potential Applications. Front Neurol 2014; 5:183. [PMID: 25295029 PMCID: PMC4171987 DOI: 10.3389/fneur.2014.00183] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 09/09/2014] [Indexed: 11/13/2022] Open
Abstract
Primary dystonia (pD) is a movement disorder characterized by sustained or intermittent muscle contractions causing abnormal, often repetitive, movements, postures, or both. Gilles de la Tourette syndrome (GTS) is a childhood-onset neuropsychiatric developmental disorder characterized by motor and phonic tics, which could progress to behavioral changes. GTS and obsessive-compulsive disorders are often seen in comorbidity, also suggesting that a possible overlap in the pathophysiological bases of these two conditions. PET techniques are of considerable value in detecting functional and molecular abnormalities in vivo, according to the adopted radioligands. For example, PET is the unique technique that allows in vivo investigation of neurotransmitter systems, providing evidence of changes in GTS or pD. For example, presynaptic and post-synaptic dopaminergic studies with PET have shown alterations compatible with dysfunction or loss of D2-receptors bearing neurons, increased synaptic dopamine levels, or both. Measures of cerebral glucose metabolism with (18)F-fluorodeoxyglucose PET ((18)F-FDG PET) are very sensitive in showing brain functional alterations as well. (18)F-FDG PET data have shown metabolic changes within the cortico-striato-pallido-thalamo-cortical and cerebello-thalamo-cortical networks, revealing possible involvement of brain circuits not limited to basal ganglia in pD and GTS. The aim of this work is to overview PET consistent neuroimaging literature on pD and GTS that has provided functional and molecular knowledge of the underlying neural dysfunction. Furthermore, we suggest potential applications of these techniques in monitoring treatments.
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Affiliation(s)
- Pierpaolo Alongi
- Department of Nuclear Medicine, San Raffaele Hospital , Milan , Italy ; Bicocca University , Milan , Italy
| | - Leonardo Iaccarino
- Department of Nuclear Medicine, San Raffaele Hospital , Milan , Italy ; Vita-Salute San Raffaele University , Milan , Italy
| | - Daniela Perani
- Department of Nuclear Medicine, San Raffaele Hospital , Milan , Italy ; Vita-Salute San Raffaele University , Milan , Italy
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Moon JH, Kim JH, Im HJ, Lee DS, Park EJ, Song K, Oh HJ, Hyun SB, Kang SC, Kim H, Moon HE, Park HW, Lee HJ, Kim EJ, Kim S, Lee BC, Paek SH. Proposed Motor Scoring System in a Porcine Model of Parkinson's Disease induced by Chronic Subcutaneous Injection of MPTP. Exp Neurobiol 2014; 23:258-65. [PMID: 25258574 PMCID: PMC4174618 DOI: 10.5607/en.2014.23.3.258] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 08/24/2014] [Accepted: 08/25/2014] [Indexed: 12/21/2022] Open
Abstract
Destruction of dopaminergic neurons in the substantia nigra pars compacta (SNpc) is a common pathophysiology of Parkinson's disease (PD). Characteristics of PD patients include bradykinesia, muscle rigidity, tremor at rest and disturbances in balance. For about four decades, PD animal models have been produced by toxin-induced or gene-modified techniques. However, in mice, none of the gene-modified models showed all 4 major criteria of PD. Moreover, distinguishing between PD model pigs and normal pigs has not been well established. Therefore, we planned to produce a pig model for PD by chronic subcutaneous administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), neurotoxin. Changes in behavioral patterns of pigs were thoroughly evaluated and a new motor scoring system was established for this porcine model that was based on the Unified Parkinson's Disease Rating Scale (UPDRS) in human PD patients. In summary, this motor scoring system could be helpful to analyze the porcine PD model and to confirm the pathology prior to further examinations, such as positron emission tomography-computed tomography (PET-CT), which is expensive, and invasive immunohistochemistry (IHC) of the brain.
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Affiliation(s)
- Joon Ho Moon
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea
| | - Ji Ho Kim
- Optipharm Inc., Cheongwon 363-954, Korea
| | - Hyung-Jun Im
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, and College of Medicine or College of Pharmacy, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Dong Soo Lee
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, and College of Medicine or College of Pharmacy, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Eun Jung Park
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea
| | - Kilyoung Song
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea
| | - Hyun Ju Oh
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea
| | | | | | - Hyunil Kim
- Optipharm Inc., Cheongwon 363-954, Korea
| | - Hyo Eun Moon
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Hyung Woo Park
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Hong Jae Lee
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul 110-744, Korea
| | | | | | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Korea. ; Institute of Green BioScience & Technology, Seoul National University, Pyeongchang 232-916, Korea
| | - Sun Ha Paek
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
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Daniela P, Orazio S, Alessandro P, Mariano NF, Leonardo I, Pasquale Anthony DR, Giovanni F, Carlo C. A survey of FDG- and amyloid-PET imaging in dementia and GRADE analysis. BIOMED RESEARCH INTERNATIONAL 2014; 2014:785039. [PMID: 24772437 PMCID: PMC3977528 DOI: 10.1155/2014/785039] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 01/29/2014] [Indexed: 12/25/2022]
Abstract
PET based tools can improve the early diagnosis of Alzheimer's disease (AD) and differential diagnosis of dementia. The importance of identifying individuals at risk of developing dementia among people with subjective cognitive complaints or mild cognitive impairment has clinical, social, and therapeutic implications. Within the two major classes of AD biomarkers currently identified, that is, markers of pathology and neurodegeneration, amyloid- and FDG-PET imaging represent decisive tools for their measurement. As a consequence, the PET tools have been recognized to be of crucial value in the recent guidelines for the early diagnosis of AD and other dementia conditions. The references based recommendations, however, include large PET imaging literature based on visual methods that greatly reduces sensitivity and specificity and lacks a clear cut-off between normal and pathological findings. PET imaging can be assessed using parametric or voxel-wise analyses by comparing the subject's scan with a normative data set, significantly increasing the diagnostic accuracy. This paper is a survey of the relevant literature on FDG and amyloid-PET imaging aimed at providing the value of quantification for the early and differential diagnosis of AD. This allowed a meta-analysis and GRADE analysis revealing high values for PET imaging that might be useful in considering recommendations.
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Affiliation(s)
- Perani Daniela
- Nuclear Medicine Department, Vita-Salute San Raffaele University, San Raffaele Hospital and Division of Neuroscience, San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | - Schillaci Orazio
- Nuclear Medicine Department, University of Rome “Tor Vergata” and IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Padovani Alessandro
- Department of Medical and Experimental Sciences, Unit of Neurology, Brescia University, 25123 Brescia, Italy
| | - Nobili Flavio Mariano
- Department of Neuroscience Ophthalmology and Genetics, University of Genoa, 16132 Genoa, Italy
| | - Iaccarino Leonardo
- Nuclear Medicine Department, Vita-Salute San Raffaele University, San Raffaele Hospital and Division of Neuroscience, San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy
| | | | - Frisoni Giovanni
- IRCCS Centro San Giovanni di Dio Fatebenefratelli, and Memory Clinic and LANVIE, Laboratory of Neuroimaging of Aging, University Hospitals and University of Geneva, 1225 Geneva, Switzerland
| | - Caltagirone Carlo
- University of Rome Tor Vergata and IRCSS S. Lucia, 00142 Rome, Italy
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