1
|
Kerstens VS, Fazio P, Sundgren M, Halldin C, Svenningsson P, Varrone A. [ 18F]FE-PE2I DAT correlates with Parkinson's disease duration, stage, and rigidity/bradykinesia scores: a PET radioligand validation study. EJNMMI Res 2023; 13:29. [PMID: 37017878 PMCID: PMC10076455 DOI: 10.1186/s13550-023-00974-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/12/2023] [Indexed: 04/06/2023] Open
Abstract
BACKGROUND Correlations between dopamine transporter (DAT) availability and Parkinson's disease (PD) motor symptoms vary depending on the imaging modality, choice of regions of interest and clinical measures. We aimed to validate the PET radioligand [18F]FE-PE2I as a clinical biomarker in PD, hypothesizing negative correlations between DAT availability in specified nigrostriatal regions with symptom duration, disease stage and motor symptom scores. METHODS We included 41 PD patients (age 45-79 years; H&Y stage < 3) and 37 healthy control subjects in a cross-sectional study with dynamic [18F]FE-PE2I PET. Binding potential (BPND) was estimated in the caudate nucleus, putamen, ventral striatum, sensorimotor striatum, and substantia nigra using the cerebellum as reference region. RESULTS We found negative correlations (p < 0.02) between symptom duration and BPND in the putamen and sensorimotor striatum (rs = - .42; rs = - .51), and between H&Y stage and BPND in caudate nucleus, putamen, sensorimotor striatum, and substantia nigra (rs between - .40 and - .54). The first correlations were better described with exponential fitting. MDS-UPDRS-III in 'OFF' state correlated negatively (p < 0.04) with BPND in the sensorimotor striatum (rs = - .47), and excluding tremor score also in the putamen (rs = - .45). CONCLUSION Results are in agreement with earlier findings in in vivo and post-mortem studies and validate [18F]FE-PE2I as a functional PD biomarker for PD severity. TRIAL REGISTRATION EudraCT 2011-0020050, Registered April 26 2011; EudraCT 2017-003327-29, Registered October 08 2017; EudraCT 2017-001585-19, Registered August 2 2017. https://eudract.ema.europa.eu/ .
Collapse
Affiliation(s)
- Vera S Kerstens
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet and Stockholm Health Care Services, Stockholm, Sweden.
| | - Patrik Fazio
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet and Stockholm Health Care Services, Stockholm, Sweden
| | - Mathias Sundgren
- Department of Clinical Neuroscience, Neuro Department, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Christer Halldin
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet and Stockholm Health Care Services, Stockholm, Sweden
| | - Per Svenningsson
- Department of Clinical Neuroscience, Neuro Department, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Andrea Varrone
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet and Stockholm Health Care Services, Stockholm, Sweden
| |
Collapse
|
2
|
Maiti B, Perlmutter JS. Imaging in Movement Disorders. Continuum (Minneap Minn) 2023; 29:194-218. [PMID: 36795878 DOI: 10.1212/con.0000000000001210] [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: 02/18/2023]
Abstract
OBJECTIVE This article reviews commonly used imaging modalities in movement disorders, particularly parkinsonism. The review includes the diagnostic utility, role in differential diagnosis, reflection of pathophysiology, and limitations of neuroimaging in the setting of movement disorders. It also introduces promising new imaging modalities and describes the current status of research. LATEST DEVELOPMENTS Iron-sensitive MRI sequences and neuromelanin-sensitive MRI can be used to directly assess the integrity of nigral dopaminergic neurons and thus may reflect disease pathology and progression throughout the full range of severity in Parkinson disease (PD). The striatal uptake of presynaptic radiotracers in their terminal axons as currently assessed using clinically approved positron emission tomography (PET) or single-photon emission computed tomography (SPECT) imaging correlates with nigral pathology and disease severity only in early PD. Cholinergic PET, using radiotracers that target the presynaptic vesicular acetylcholine transporter, constitutes a substantial advance and may provide crucial insights into the pathophysiology of clinical symptoms such as dementia, freezing, and falls. ESSENTIAL POINTS In the absence of valid, direct, objective biomarkers of intracellular misfolded α-synuclein, PD remains a clinical diagnosis. The clinical utility of PET- or SPECT-based striatal measures is currently limited given their lack of specificity and inability to reflect nigral pathology in moderate to severe PD. These scans may be more sensitive than clinical examination to detect nigrostriatal deficiency that occurs in multiple parkinsonian syndromes and may still be recommended for clinical use in the future to identify prodromal PD if and when disease-modifying treatments become available. Multimodal imaging to evaluate underlying nigral pathology and its functional consequences may hold the key to future advances.
Collapse
|
3
|
Diagnostic Performance for Differential Diagnosis of Atypical Parkinsonian Syndromes from Parkinson’s Disease Using Quantitative Indices of 18F-FP-CIT PET/CT. Diagnostics (Basel) 2022; 12:diagnostics12061402. [PMID: 35741212 PMCID: PMC9221712 DOI: 10.3390/diagnostics12061402] [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: 05/16/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 01/27/2023] Open
Abstract
We are aimed to evaluate the diagnostic performances of quantitative indices obtained from dual-phase 18F-FP-CIT PET/CT for differential diagnosis of atypical parkinsonian syndromes (APS) from Parkinson’s disease (PD). We analyzed 172 subjects, including 105 non-Parkinsonism, 26 PD, 8 PSP, 1 CBD, 8 MSA-P, 9 MSA-C, and 15 DLB retrospectively. Two sequential PET/CT scans were acquired at 5 min and 3 h. We compared subregional binding potentials, putamen-to-caudate nucleus ratio of the binding potential, asymmetry index, and degree of washout. To differentiate APS, all BPs in both early and late phases (except late BPbrainstem) and all factors of the percent change except for putamen in APS significantly differed from PD. When a cut-off for early BPcerebellum was set as 0.79, the sensitivity, specificity (SP), positive predictive value (PPV), negative predictive value (NPV), and accuracy for differentiating APS 73.2%, 91.7%, 93.8%, 66.7%, and 80.0%. The early BPcerebellum showed significantly greater SP and PPV than the late quantitative indices. Combined criteria regarding both early and late indices exhibited only greater NPV. The quantitative indices showed high diagnostic performances in differentiating APS from PD. Our findings provide the dual-phase 18F-FP-CIT PET/CT would be useful for differentiating APS from PD.
Collapse
|
4
|
Wallert ED, van de Giessen E, Knol RJJ, Beudel M, de Bie RMA, Booij J. Imaging Dopaminergic Neurotransmission in Neurodegenerative Disorders. J Nucl Med 2022; 63:27S-32S. [PMID: 35649651 PMCID: PMC9165729 DOI: 10.2967/jnumed.121.263197] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/25/2022] [Indexed: 12/14/2022] Open
Abstract
Imaging of dopaminergic transmission in neurodegenerative disorders such as Parkinson disease (PD) or dementia with Lewy bodies plays a major role in clinical practice and in clinical research. We here review the role of imaging of the nigrostriatal pathway, as well as of striatal receptors and dopamine release, in common neurodegenerative disorders in clinical practice and research. Imaging of the nigrostriatal pathway has a high diagnostic accuracy to detect nigrostriatal degeneration in disorders characterized by nigrostriatal degeneration, such as PD and dementia with Lewy bodies, and disorders of more clinical importance, namely in patients with clinically uncertain parkinsonism. Imaging of striatal dopamine D2/3 receptors is not recommended for the differential diagnosis of parkinsonian disorders in clinical practice anymore. Regarding research, recently the European Medicines Agency has qualified dopamine transporter imaging as an enrichment biomarker for clinical trials in early PD, which underlines the high diagnostic accuracy of this imaging tool and will be implemented in future trials. Also, imaging of the presynaptic dopaminergic system plays a major role in, for example, examining the extent of nigrostriatal degeneration in preclinical and premotor phases of neurodegenerative disorders and to examine subtypes of PD. Also, imaging of postsynaptic dopamine D2/3 receptors plays a role in studying, for example, the neuronal substrate of impulse control disorders in PD, as well as in measuring endogenous dopamine release to examine, for example, motor complications in the treatment of PD. Finally, novel MRI sequences as neuromelanin-sensitive MRI are promising new tools to study nigrostriatal degeneration in vivo.
Collapse
Affiliation(s)
- Elon D Wallert
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Elsmarieke van de Giessen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit, Amsterdam, The Netherlands
| | - Remco J J Knol
- Department of Nuclear Medicine, Noordwest Ziekenhuisgroep, Alkmaar, The Netherlands; and
| | - Martijn Beudel
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Rob M A de Bie
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jan Booij
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands;
| |
Collapse
|
5
|
Decoding the dopamine transporter imaging for the differential diagnosis of parkinsonism using deep learning. Eur J Nucl Med Mol Imaging 2022; 49:2798-2811. [PMID: 35588012 PMCID: PMC9206631 DOI: 10.1007/s00259-022-05804-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 04/12/2022] [Indexed: 11/16/2022]
Abstract
Purpose
This work attempts to decode the discriminative information in dopamine transporter (DAT) imaging using deep learning for the differential diagnosis of parkinsonism. Methods This study involved 1017 subjects who underwent DAT PET imaging ([11C]CFT) including 43 healthy subjects and 974 parkinsonian patients with idiopathic Parkinson’s disease (IPD), multiple system atrophy (MSA) or progressive supranuclear palsy (PSP). We developed a 3D deep convolutional neural network to learn distinguishable DAT features for the differential diagnosis of parkinsonism. A full-gradient saliency map approach was employed to investigate the functional basis related to the decision mechanism of the network. Furthermore, deep-learning-guided radiomics features and quantitative analysis were compared with their conventional counterparts to further interpret the performance of deep learning. Results The proposed network achieved area under the curve of 0.953 (sensitivity 87.7%, specificity 93.2%), 0.948 (sensitivity 93.7%, specificity 97.5%), and 0.900 (sensitivity 81.5%, specificity 93.7%) in the cross-validation, together with sensitivity of 90.7%, 84.1%, 78.6% and specificity of 88.4%, 97.5% 93.3% in the blind test for the differential diagnosis of IPD, MSA and PSP, respectively. The saliency map demonstrated the most contributed areas determining the diagnosis located at parkinsonism-related regions, e.g., putamen, caudate and midbrain. The deep-learning-guided binding ratios showed significant differences among IPD, MSA and PSP groups (P < 0.001), while the conventional putamen and caudate binding ratios had no significant difference between IPD and MSA (P = 0.24 and P = 0.30). Furthermore, compared to conventional radiomics features, there existed average above 78.1% more deep-learning-guided radiomics features that had significant differences among IPD, MSA and PSP. Conclusion This study suggested the developed deep neural network can decode in-depth information from DAT and showed potential to assist the differential diagnosis of parkinsonism. The functional regions supporting the diagnosis decision were generally consistent with known parkinsonian pathology but provided more specific guidance for feature selection and quantitative analysis. Supplementary Information The online version contains supplementary material available at 10.1007/s00259-022-05804-x.
Collapse
|
6
|
A study of turn bias in people with idiopathic Parkinson's disease. Exp Brain Res 2022; 240:1673-1685. [PMID: 35551430 DOI: 10.1007/s00221-022-06378-8] [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: 01/28/2022] [Accepted: 04/19/2022] [Indexed: 11/04/2022]
Abstract
The objective of the study is to explore whether people with Parkinson's disease (PwPD) display a preferential turn bias dependent upon disease asymmetry, and whether specific disease features predict turn bias. PwPD and age-matched controls were instructed to walk on an instrumented gait mat making "normal" turns. Trials were analyzed using Proto Kinetics Movement Analysis Software (PKMAS) and time-locked video recordings to obtain turn directionality and spatiotemporal turn measures. Turn bias was estimated using previously defined formulas. Seventy-two PwPD and 28 controls were included. One hundred percent of controls and 85% of PwPD had left turn bias. Turn bias was not significantly associated with age, gender, handedness, disease asymmetry, cognition, or disease severity. The Freezing of Gait Questionnaire (FOGQ) questions 5 and 6 showed linear-by-linear association with turn bias. In binary logistic and ordinal regression models, FOGQ question 6 (average duration of turn freezing) and turn width were predictive of turn bias. Rightward turns had greater frequency of freezing episodes. Turn bias in our PwPD cohort does not appear related to disease asymmetry or other disease features, except gait freezing. Whether freezing severity on turning leads to non-left turn bias or vice versa requires more focused studies. Physical therapy interventions targeting turning direction in PwPD could reduce freezing severity.
Collapse
|
7
|
Jia C, Wu M, Yen TC, Li Y, Cui R. Complementary Utility of Dopamine Transporter and Tau PET Imaging in the Diagnosis of Progressive Supranuclear Palsy: A Case Report. Clin Nucl Med 2022; 47:336-338. [PMID: 35020665 DOI: 10.1097/rlu.0000000000003974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT A 50-year-old woman developed gait disturbances, tendency to fall backwards, bradykinesia, and memory loss over the previous 6 months. Brain 18F-FDG PET/CT was unable to distinguish among APSs (atypical parkinsonian syndromes); PET investigations of dopamine transporter (DAT) function (11C-CFT) and tau pathology (18F-APN-1607) were performed. 11C-CFT PET revealed severe loss of striatal DAT function, whereas significant tau accumulation was observed in the brainstem, basal ganglia, and globus pallidus on 18F-APN-1607 PET. Such finding suggested diagnosis of PSP (progressive supranuclear palsy). This case highlights the value of DAT and tau PET imaging in diagnosis of PSP and differential diagnosis ofAPSs.
Collapse
Affiliation(s)
| | | | | | - Yanfeng Li
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | |
Collapse
|
8
|
Biophysical Modeling of Dopaminergic Denervation Landscapes in the Striatum Reveals New Therapeutic Strategy. eNeuro 2022; 9:ENEURO.0458-21.2022. [PMID: 35165198 PMCID: PMC8896595 DOI: 10.1523/eneuro.0458-21.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 11/25/2022] Open
Abstract
Parkinson’s disease (PD) results from a loss of dopaminergic neurons. What triggers the break-down of neuronal signaling, and how this might be compensated, is not understood. The age of onset, progression and symptoms vary between patients, and our understanding of the clinical variability remains incomplete. In this study, we investigate this, by characterizing the dopaminergic landscape in healthy and denervated striatum, using biophysical modeling. Based on currently proposed mechanisms, we model three distinct denervation patterns, and show how this affect the dopaminergic network. Depending on the denervation pattern, we show how local and global differences arise in the activity of striatal neurons. Finally, we use the mathematical formalism to suggest a cellular strategy for maintaining normal dopamine (DA) signaling following neuronal denervation. This strategy is characterized by dual enhancement of both the release and uptake capacity of DA in the remaining neurons. Overall, our results derive a new conceptual framework for the impaired dopaminergic signaling related to PD and offers testable predictions for future research directions.
Collapse
|
9
|
Chen Y, Liu P, Cen Z, Liao Y, Lin Z, Luo W. Early-onset Parkinson's disease with atypical molecular imaging abnormalities in a patient carrying the de novo PRKCG mutation. Parkinsonism Relat Disord 2022; 95:100-102. [DOI: 10.1016/j.parkreldis.2022.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/01/2022]
|
10
|
Xu J, Xu Q, Liu S, Li L, Li L, Yen TC, Wu J, Wang J, Zuo C, Wu P, Zhuang X. Computer-Aided Classification Framework of Parkinsonian Disorders Using 11C-CFT PET Imaging. Front Aging Neurosci 2022; 13:792951. [PMID: 35177974 PMCID: PMC8846284 DOI: 10.3389/fnagi.2021.792951] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/27/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose To investigate the usefulness of a novel computer-aided classification framework for the differential diagnosis of parkinsonian disorders (PDs) based on 11C-methyl-N-2β-carbomethoxy-3β-(4-fluorophenyl)-tropanel (11C-CFT) positron emission tomography (PET) imaging. Methods Patients with different forms of PDs—including Parkinson's disease (PD), multiple system atrophy (MSA) and progressive supranuclear palsy (PSP)—underwent dopamine transporter (DAT) imaging with 11C-CFT PET. A novel multistep computer-aided classification framework—consisting of magnetic resonance imaging (MRI)-assisted PET segmentation, feature extraction and prediction, and automatic subject classification—was developed. A random forest method was used to assess the diagnostic relevance of different regions to the classification process. Finally, the performance of the computer-aided classification system was tested using various training strategies involving patients with early and advanced disease stages. Results Accuracy values for identifying PD, MSA, and PSP were 85.0, 82.2, and 89.7%, respectively—with an overall accuracy of 80.4%. The caudate and putamen provided the highest diagnostic relevance to the proposed classification framework, whereas the contribution of midbrain was negligible. With the exception of sensitivity for diagnosing PSP, the strategy comprising both early and advanced disease stages performed better in terms of sensitivity, specificity, positive predictive value, and negative predictive value within each PDs subtype. Conclusions The proposed computer-aided classification framework based on 11C-CFT PET imaging holds promise for improving the differential diagnosis of PDs.
Collapse
Affiliation(s)
- Jiahang Xu
- School of Data Science, Fudan University, Shanghai, China
| | - Qian Xu
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Shihong Liu
- School of Computer Science, University of Nottingham, Nottingham, United Kingdom
| | - Ling Li
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Lei Li
- School of Data Science, Fudan University, Shanghai, China
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Tzu-Chen Yen
- Nuclear Medicine and Molecular Imaging Center, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Jianjun Wu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jian Wang
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Chuantao Zuo
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
- National Center for Neurological Disorders & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Human Phenome Institute, Fudan University, Shanghai, China
- Institute of Functional and Molecular Medical Imaging, Fudan University, Shanghai, China
| | - Ping Wu
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
- National Center for Neurological Disorders & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
- *Correspondence: Ping Wu
| | - Xiahai Zhuang
- School of Data Science, Fudan University, Shanghai, China
- Xiahai Zhuang
| |
Collapse
|
11
|
Brücke T, Brücke C. Dopamine transporter (DAT) imaging in Parkinson's disease and related disorders. J Neural Transm (Vienna) 2021; 129:581-594. [PMID: 34910248 DOI: 10.1007/s00702-021-02452-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 11/30/2021] [Indexed: 11/27/2022]
Abstract
This review gives an insight into the beginnings of dopamine transporter (DAT) imaging in the early 1990s, focussing on single photon emission tomography (SPECT). The development of the method and its consolidation as a now widely used clinical tool is described. The role of DAT-SPECT in the diagnosis and differential diagnosis of PD, atypical parkinsonian syndromes and several other different neurological disorders is reviewed. Finally the clinical research using DAT-SPECT as a biomarker for the progression of PD, for the detection of a preclinical dopaminergic lesion and its correlation with neuropathological findings is outlined.
Collapse
Affiliation(s)
- Thomas Brücke
- Ottakring Clinic, Neurological Department, Verein zur Förderung der Wissenschaftlichen Forschung am Wilhelminenspital (FWFW), Montleartstrasse 37, 1160, Vienna, Austria.
- , Linke Wienzeile 12, 1060, Vienna, Austria.
| | - Christof Brücke
- Department for Neurology, Medical University Vienna, Währingergürtel 18-20, 1090, Vienna, Austria
| |
Collapse
|
12
|
Chun K, Kong E, Cho I. Comparison of perfusion 18F-FP-CIT PET and 99mTc-ECD SPECT in parkinsonian disorders. Medicine (Baltimore) 2021; 100:e27019. [PMID: 34449475 PMCID: PMC8389924 DOI: 10.1097/md.0000000000027019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 08/04/2021] [Indexed: 01/04/2023] Open
Abstract
Early and accurate identification of various conditions that can cause parkinsonian symptoms is important for determining treatment policies. Currently dopamine transporter (DAT) imaging using FP-CIT, glucose metabolism imaging using fluorodeoxyglucose, cerebral blood flow image using ethyl cysteinate dimer (ECD), and others are used for differentiation. However, the use of multiple modalities is inconvenient and costly. In the present retrospective study, we evaluated the correlation between regional brain uptake ratios (URs) in perfusion FP-CIT PET and ECD SPECT images.Twenty patients with Parkinson's symptoms underwent perfusion DAT positron emission tomography (18F-FP-CIT PET/CT) and cerebral blood flow tomography (99mTc-ECD SPECT) within a 2-week period. Perfusion 18F-FP-CIT PET/CT and 99mTc-ECD SPECT URs of 19 brain regions (bilateral frontal, temporal, parietal and occipital lobes, bilateral caudate nucleus, bilateral putamen, bilateral insula, bilateral cingulate gyrus, bilateral thalamus, and brainstem) were directly compared and correlations were analyzed.Average 18F-FP-CIT PET/CT regional perfusion URs were higher than 99mTc-ECD SPECT URs. Uptake ratios were well correlated in all 19 regions (except right putamen), and especially in dopamine poor regions (cerebral cortex). In left putamen, URs were significantly correlated, but the correlation coefficient was lower than those of other regions.A single tracer dual phase N-3-fluoropropyl-2-beta-carboxymethoxy-3-beta-(4-iodophenyl) nortropane test seems to be helpful for differential diagnosis of parkinsonian disorders. Large-scale, longitudinal studies on complementary diseases with parkinsonian patterns are required to investigate differences in correlations between perfusion 18F-FP-CIT PET/CT and 99mTc-ECD SPECT over time.
Collapse
|
13
|
CLR01 protects dopaminergic neurons in vitro and in mouse models of Parkinson's disease. Nat Commun 2020; 11:4885. [PMID: 32985503 PMCID: PMC7522721 DOI: 10.1038/s41467-020-18689-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/27/2020] [Indexed: 12/15/2022] Open
Abstract
Parkinson’s disease (PD) affects millions of patients worldwide and is characterized by alpha-synuclein aggregation in dopamine neurons. Molecular tweezers have shown high potential as anti-aggregation agents targeting positively charged residues of proteins undergoing amyloidogenic processes. Here we report that the molecular tweezer CLR01 decreased aggregation and toxicity in induced pluripotent stem cell-derived dopaminergic cultures treated with PD brain protein extracts. In microfluidic devices CLR01 reduced alpha-synuclein aggregation in cell somas when axonal terminals were exposed to alpha-synuclein oligomers. We then tested CLR01 in vivo in a humanized alpha-synuclein overexpressing mouse model; mice treated at 12 months of age when motor defects are mild exhibited an improvement in motor defects and a decreased oligomeric alpha-synuclein burden. Finally, CLR01 reduced alpha-synuclein-associated pathology in mice injected with alpha-synuclein aggregates into the striatum or substantia nigra. Taken together, these results highlight CLR01 as a disease-modifying therapy for PD and support further clinical investigation. CLR01 is a molecular tweezer that inhibits protein aggregation. Here the authors show that CLR01 protects dopaminergic neurons in vitro and in vivo in human neurons and in mouse models showing potential as a disease-modifying therapy for Parkinson’s disease.
Collapse
|
14
|
Laterality of specific binding ratios on DAT-SPECT for differential diagnosis of degenerative parkinsonian syndromes. Sci Rep 2020; 10:15761. [PMID: 32978422 PMCID: PMC7519659 DOI: 10.1038/s41598-020-72321-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 08/24/2020] [Indexed: 02/01/2023] Open
Abstract
Motor symptoms of Parkinson's disease (PD) occur unilaterally and progress with asymmetry, while progressive supranuclear palsy (PSP) and multiple system atrophy of the parkinsonism subtype (MSA-P) lack this tendency. We assessed the laterality of specific binding ratios (SBRs) on dopamine transporter single-photon emission computed tomography (DAT-SPECT) for the differential diagnosis of these diseases in 311 PD, 33 PSP, 20 MSA-P, and 137 control patients. The average SBR in PD was higher than that in PSP (P = 0.035). Compared with Hoehn-Yahr (HY) stages, the average SBR in PD with HY stage I was only higher than that in PSP (P < 0.001). SBR laterality in PD with HY stage I was significantly higher than that in PSP (P = 0.001). This difference was not observed in PD with HY stage II. The average and laterality of SBRs in MSA-P were similar to those in PD and PSP. The asymmetry indices were similar among PD, PSP, and MSA-P. These data suggest that PSP shows a pattern of SBRs different from that in PD, attributed to HY stage I in PD. The limited usefulness of DAT-SPECT may be explained by the low discrimination between PD with bilateral motor symptoms and PSP.
Collapse
|
15
|
Lundeen TF, Covington M, Krupinski EA, Avery R, Lei H, Sherman SJ, Kuo PH. Accuracy of Dopamine Transporter Imaging with 123I-Ioflupane in Hispanic and Non-Hispanic Patients. J Nucl Med Technol 2020; 48:154-157. [DOI: 10.2967/jnmt.119.231423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/06/2019] [Indexed: 11/16/2022] Open
|
16
|
Massa J, Chahine LM. Revision of Diagnosis in Early Parkinsonism with Abnormal Dopamine Transporter Imaging. JOURNAL OF PARKINSONS DISEASE 2020; 9:327-334. [PMID: 30958313 DOI: 10.3233/jpd-181517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND In patients with early parkinsonism, misdiagnosis may occur in >30% of cases. This can have detrimental consequences clinically and in clinical trials. Dopamine transporter (DAT) SPECT imaging can help improve diagnostic accuracy. OBJECTIVE To describe characteristics of individuals initially diagnosed with idiopathic Parkinson's disease (iPD) and with abnormal DAT SPECT imaging who had a change in diagnosis on follow-up. METHODS Data were obtained from the biomarker study Parkinson's Progression Markers Initiative (PPMI). PPMI is a multicenter, observational study that enrolled 423 individuals with a diagnosis of iPD of ≤2 years duration and with abnormal DAT SPECT imaging. Participants were assessed at least annually, and diagnosis was documented by the site neurologist. Characteristics of those that had a change in diagnosis were compared to those with stable diagnosis. RESULTS 390 subjects were included. Eight (2%) had a change in diagnosis. The diagnosis was changed to multiple system atrophy in 5 cases, dementia with Lewy bodies in 2, and corticobasal degeneration in 1. Revision of diagnosis occurred 2-5.2 years from enrollment. Mean motor score was higher (26.9 vs 20.6; p = 0.01), DAT binding lower (1.056 vs 1.406; p = 0.01), genetic risk score lower (-0.016 vs -0.022; p = 0.0470), and olfaction score higher (28.75 vs 22.05; p = 0.03) in those whose diagnosis changed compared to those who did not. CONCLUSION Diagnosis remained stable in most individuals with early parkinsonism diagnosed with iPD and with abnormal DAT imaging. A small number had a revision in diagnosis. Clinical and biomarker abnormalities were greater at baseline in those whose diagnosis changed.
Collapse
Affiliation(s)
- Jason Massa
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lana M Chahine
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA
| |
Collapse
|
17
|
Sakakibara S, Hashimoto R, Katayama T, Kenjyo M, Yokokawa Y, Saito Y, Hirakawa A, Ito M, Nakamura T, Hara K, Hashizume A, Aiba I, Inukai A, Katsuno M. Longitudinal Change of DAT SPECT in Parkinson's Disease and Multiple System Atrophy. JOURNAL OF PARKINSONS DISEASE 2019; 10:123-130. [PMID: 31707374 DOI: 10.3233/jpd-191710] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Both Parkinson's disease (PD) and multiple system atrophy (MSA) are neurodegenerative disorder affecting striatonigral system. Although various lines of evidence demonstrate that dopaminergic neuron degeneration emerges before the onset of motor symptoms in PD, preclinical/prodromal progression of neurodegeneration is far less understood in MSA. OBJECTIVE The aim of this study was to clarify the difference in the progression of dopaminergic degeneration in MSA and PD using dopamine transporter single-photon emission computed tomography (DAT SPECT). METHODS We analyzed longitudinal data of the specific binding ratio (SBR), a measure of striatal radiotracer uptake, in DAT SPECT from 7 patients with MSA-C, 5 patients with MSA-P, and 18 patients with PD. We performed 2.7±0.7 scans with an interval of 9.85±6.00 months for MSA and 2 scans with an interval of 2.16±0.16 years for PD. RESULTS The rate of SBR decline was faster in both subtypes of MSA compared with PD, but the value was similar between MSA-P and MSA-C. The estimated SBR at the onset of initial motor symptoms was lower in PD and MSA-P than in MSA-C, especially in the predominantly affected side. SBR of the predominantly affected side starts to decrease before the onset of motor symptoms in PD and MSA-P, whereas the initiation of SBR decline is around the onset in MSA-C individuals. The decline of SBR in the less affected side was not clearly shown before the onset in MSA-P or MSA-C. CONCLUSIONS Our results suggest that the SBR in DAT SPECT analysis is an important pathophysiological marker reflecting the disease- and subtype-specific progression of dopaminergic degeneration in MSA and PD.
Collapse
Affiliation(s)
- Satoko Sakakibara
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan.,Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Rina Hashimoto
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Taiji Katayama
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Masakuni Kenjyo
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Yuki Yokokawa
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Yufuko Saito
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Akihiro Hirakawa
- Department of Biostatistics and Bioinformatics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mizuki Ito
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomohiko Nakamura
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Kazuhiro Hara
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsushi Hashizume
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ikuko Aiba
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Akira Inukai
- Department of Neurology, National Hospital Organization, Higashinagoya National Hospital, Nagoya, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
18
|
Pasquini J, Durcan R, Wiblin L, Gersel Stokholm M, Rochester L, Brooks DJ, Burn D, Pavese N. Clinical implications of early caudate dysfunction in Parkinson's disease. J Neurol Neurosurg Psychiatry 2019; 90:1098-1104. [PMID: 31079063 PMCID: PMC6817982 DOI: 10.1136/jnnp-2018-320157] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/26/2019] [Accepted: 04/15/2019] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Although not typical of Parkinson's disease (PD), caudate dopaminergic dysfunction can occur in early stages of the disease. However, its frequency and longitudinal implications in large cohorts of recently diagnosed patients remain to be established. We investigated the occurrence of caudate dopaminergic dysfunction in the very early phases of PD (<2 years from diagnosis) using 123I-FP-CIT single photon emission CT and determined whether it was associated with the presence or subsequent development of cognitive impairment, depression, sleep and gait problems. METHODS Patients with PD and healthy controls were identified from the Parkinson's Progression Markers Initiative (PPMI) database. We defined a clinically significant caudate dysfunction as 123I-FP-CIT binding <-2 SDs compared with the controls' mean and categorised three groups accordingly (no reduction, unilateral reduction, bilateral reduction). All statistical analyses were adjusted for mean putamen binding. RESULTS At baseline, 51.6% of 397 patients had normal caudate dopamine transporter binding, 26.0% had unilateral caudate involvement, 22.4% had bilaterally impaired caudate.Compared with those with a baseline normal caudate function, at the4-year follow-up patients with a baseline bilateral caudate involvement showed a higher frequency of cognitive impairment (p<0.001) and depression (p<0.001), and worse cognitive (p<0.001), depression (<0.05) and gait (<0.001) ratings. Significant caudate involvement was observed in 83.9% of the population after 4 years (unilateral 22.5%, bilateral 61.4%). CONCLUSIONS Early significant caudate dopaminergic denervation was found in half of the cases in the PPMI series. Baseline bilateral caudate involvement was associated with increased risk of developing cognitive impairment, depression and gait problems over the next 4 years.
Collapse
Affiliation(s)
- Jacopo Pasquini
- Dipartimento di Fisiopatologia Medico-Chirurgica e dei Trapianti, University of Milan, Milan, Italy.,Department of Neurology - Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Rory Durcan
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Louise Wiblin
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Morten Gersel Stokholm
- Department of Nuclear Medicine and PET Centre, Aarhus Universitetshospital, Aarhus, Denmark
| | - Lynn Rochester
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.,Newcastle upon Tyne Hospitals, NHS Foundation Trust, Newcastle upon Tyne, UK
| | - David James Brooks
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.,Department of Nuclear Medicine and PET Centre, Aarhus Universitetshospital, Aarhus, Denmark
| | - David Burn
- Newcastle upon Tyne Hospitals, NHS Foundation Trust, Newcastle upon Tyne, UK.,Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Nicola Pavese
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK .,Department of Nuclear Medicine and PET Centre, Aarhus Universitetshospital, Aarhus, Denmark
| |
Collapse
|
19
|
Optimizing the Diagnosis of Parkinsonian Syndromes With 123I-Ioflupane Brain SPECT. AJR Am J Roentgenol 2019; 213:243-253. [DOI: 10.2214/ajr.19.21088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
20
|
Kaasinen V, Kankare T, Joutsa J, Vahlberg T. Presynaptic Striatal Dopaminergic Function in Atypical Parkinsonism: A Metaanalysis of Imaging Studies. J Nucl Med 2019; 60:1757-1763. [PMID: 30979821 DOI: 10.2967/jnumed.119.227140] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 04/04/2019] [Indexed: 12/29/2022] Open
Abstract
Multiple-system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal syndrome (CBS) have signs and symptoms overlapping those of Parkinson disease (PD), complicating their clinical diagnosis. Although presynaptic dopaminergic brain imaging with PET and SPECT is clinically widely used for patients with suspected PD, the benefit of functional imaging in atypical parkinsonism syndromes remains unclear. We compared striatal presynaptic dopaminergic function in MSA parkinsonism variant (MSA-P), MSA cerebellar variant (MSA-C), PSP, CBS, and PD using combined quantitative data from all published studies. Methods: The PubMed database was searched from inception to August 2018 for the terms "dopamine" OR "dopaminergic" AND "PET" OR "SPECT" OR "SPET" and keywords related to PD, MSA, PSP, and CBS. In total, 1,711 publications were identified. PET or SPECT studies comparing patients with atypical parkinsonism to another diagnostic group (PD, MSA, PSP, or CBS) were included. Tracers for dopamine transporter (DAT), aromatic amino acid decarboxylase (AADC), or vesicular monoamine type 2 were investigated. Tracer binding data were extracted from the original articles. Heterogeneity of the data was examined using I 2 statistics, and a random-effects model was used to summarize data. Hedges g was used as an estimator of effect size in group comparisons. Results are reported according to PRISMA guidelines. Results: Thirty-five studies (29 DAT, 6 AADC, no vesicular monoamine type 2 studies) with 356 MSA-P patients, 204 PSP patients, 79 CBS patients, and 62 MSA-C patients were included in the metaanalysis. Caudate nucleus and putamen DAT function was clearly lower in PSP than in PD (caudate: 34.1% difference, g = -1.08, 95% confidence interval [CI] = -1.52 to -0.64; putamen: 18.2%, g = -0.86, 95% CI = -1.50 to -0.21) and MSA-P (striatum: 31.4%, g = -0.70, 95% CI = -1.21 to -0.19) and was clearly lower in MSA-P than in MSA-C (striatum: 46.0%, g = 1.46, 95% CI = 0.23 to 2.68). Although not significant because of limited data, aromatic l-AADC results paralleled the DAT findings. Conclusion: Striatal presynaptic DAT function is clearly lower in PSP patients than in PD and MSA-P patients and is clearly lower in MSA-P patients than in MSA-C patients.
Collapse
Affiliation(s)
- Valtteri Kaasinen
- Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland .,Department of Neurology, University of Turku, Turku, Finland.,Turku PET Centre, University of Turku, Turku, Finland; and
| | - Tuomas Kankare
- Department of Neurology, University of Turku, Turku, Finland
| | - Juho Joutsa
- Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland.,Department of Neurology, University of Turku, Turku, Finland
| | - Tero Vahlberg
- Department of Clinical Medicine, Biostatistics, University of Turku, Turku, Finland
| |
Collapse
|
21
|
Iwabuchi Y, Nakahara T, Kameyama M, Yamada Y, Hashimoto M, Matsusaka Y, Osada T, Ito D, Tabuchi H, Jinzaki M. Impact of a combination of quantitative indices representing uptake intensity, shape, and asymmetry in DAT SPECT using machine learning: comparison of different volume of interest settings. EJNMMI Res 2019; 9:7. [PMID: 30689072 PMCID: PMC6890908 DOI: 10.1186/s13550-019-0477-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 01/18/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND We sought to assess the machine learning-based combined diagnostic accuracy of three types of quantitative indices obtained using dopamine transporter single-photon emission computed tomography (DAT SPECT)-specific binding ratio (SBR), putamen-to-caudate ratio (PCR)/fractal dimension (FD), and asymmetry index (AI)-for parkinsonian syndrome (PS). We also aimed to compare the effect of two different types of volume of interest (VOI) settings from commercially available software packages DaTQUANT (Q) and DaTView (V) on diagnostic accuracy. METHODS Seventy-one patients with PS and 40 without PS (NPS) were enrolled. Using SPECT images obtained from these patients, three quantitative indices were calculated at two different VOI settings each. SBR-Q, PCR-Q, and AI-Q were derived using the VOI settings from DaTQUANT, whereas SBR-V, FD-V, and AI-V were derived using those from DaTView. We compared the diagnostic value of these six indices for PS. We incorporated a support vector machine (SVM) classifier for assessing the combined accuracy of the three indices (SVM-Q: combination of SBR-Q, PCR-Q, and AI-Q; SVM-V: combination of SBR-V, FD-V, and AI-V). A Mann-Whitney U test and receiver-operating characteristics (ROC) analysis were used for statistical analyses. RESULTS ROC analyses demonstrated that the areas under the curve (AUC) for SBR-Q, PCR-Q, AI-Q, SBR-V, FD-V, and AI-V were 0.978, 0.837, 0.802, 0.906, 0.972, and 0.829, respectively. On comparing the corresponding quantitative indices between the two types of VOI settings, SBR-Q performed better than SBR-V (p = 0.006), whereas FD-V performed better than PCR-Q (p = 0.0003). No significant difference was observed between AI-Q and AI-V (p = 0.56). The AUCs for SVM-Q and SVM-V were 0.988 and 0.994, respectively; the two different VOI settings displayed no significant differences in terms of diagnostic accuracy (p = 0.48). CONCLUSION The combination of the three indices obtained using the SVM classifier improved the diagnostic performance for PS; this performance did not differ based on the VOI settings and software used.
Collapse
Affiliation(s)
- Yu Iwabuchi
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Tadaki Nakahara
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan.
| | - Masashi Kameyama
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan.,Department of Diagnostic Radiology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo, 173-0015, Japan
| | - Yoshitake Yamada
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Masahiro Hashimoto
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Yohji Matsusaka
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Takashi Osada
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Daisuke Ito
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Hajime Tabuchi
- Department of Neuropsychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Masahiro Jinzaki
- Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| |
Collapse
|
22
|
PD and DLB: Brain imaging in Parkinson's disease and dementia with Lewy bodies. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 165:167-185. [DOI: 10.1016/bs.pmbts.2019.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
23
|
Abstract
The emerging role of molecular imaging has made possible to evaluate and quantify biochemical changes of molecular targets in specific neurochemical systems involved in movement disorders, providing neurochemical information of clinical changes before the pathological features occurred. In detail, radionuclides imaging techniques are frequently used for the in vivo study of neurotransmitter and receptor function, alterations in cerebral blood flow and metabolic activity, abnormal protein deposition, and inflammation, with a central role in molecular imaging for preclinical and clinical studies. The present chapter represents an overview of main use of single-photon emission computed tomography (SPECT) in movement disorders, with a focal attention on specific radiotracers used, recent advances in SPECT technology and reconstruction algorithm and added specific value of semiquantitative methods for images analysis. Finally, a brief paragraph is dedicated to description of SPECT/CT devices and advantages of using hybrid technology.
Collapse
|
24
|
Bu LL, Liu FT, Jiang CF, Guo SS, Yu H, Zuo CT, Wu P, Wang J. Patterns of dopamine transporter imaging in subtypes of multiple system atrophy. Acta Neurol Scand 2018; 138:170-176. [PMID: 29573392 DOI: 10.1111/ane.12932] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVES To investigate the differences in the pattern of striatal (caudate and putamen) dopamine transporter (DAT) loss in a multiple system atrophy (MSA) cohort, based on the clinical variants parkinsonian subtype (MSA-P) and cerebellar subtype (MSA-C) via (11)C-N-2-carbomethoxy-3-(4-fluorophenyl)-tropane (11 C-CFT) positron emission tomography (PET) imaging. MATERIALS AND METHODS One hundred and six subjects (forty-one patients with probable MSA-P; forty patients with probable MSA-C; twenty-five healthy controls) underwent 11 C-CFT PET. Subregional 11 C-CFT uptake of bilateral caudate, anterior putamen, and posterior putamen was calculated respectively to measure the striatal dopaminergic function. RESULTS Significant decrease in DAT binding in striatum was revealed in patients with MSA-C and MSA-P compared to normal controls (all regions, MSA-C vs controls, P < .0001; MSA-P vs controls, P < .0001). DAT reduction was more pronounced in MSA-P patients than that in MSA-C patients (all regions, P < .0001). Eleven of forty MSA-C patients displayed no DAT loss, whereas striatal DAT loss was evident in all MSA-P patients. MSA-P subtype showed a more obvious anteroposterior gradient of DAT loss and more asymmetric dopaminergic dysfunction compared to MSA-C patients. CONCLUSION The subtypes of MSA studied here show significantly different spatial/anatomic patterns of striatonigral degeneration which may provide insights into their disease pathophysiology. Specifically, MSA-P patients exhibit an uneven and much greater pronounced loss of dopamine innervation, while a relatively uniform pattern is revealed in patients with the MSA-C. Furthermore, the typical reduction in DAT 11 C-CFT binding in striatum is not present in all MSA-C patients, with a minority of cases showing normal DAT binding.
Collapse
Affiliation(s)
- L.-L. Bu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - F.-T. Liu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - C.-F. Jiang
- Department of Nuclear Medicine; Affiliated Kunshan Hospital; Jiangsu University; Kunshan China
| | - S.-S. Guo
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - H. Yu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - C.-T. Zuo
- PET Center; Huashan Hospital; Fudan University; Shanghai China
- Institute of Functional and Molecular Medical Imaging; Fudan University; Shanghai China
| | - P. Wu
- PET Center; Huashan Hospital; Fudan University; Shanghai China
| | - J. Wang
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| |
Collapse
|
25
|
Wakabayashi Y, Takahashi R, Kanda T, Zeng F, Nogami M, Ishii K, Murakami T. Semi-quantitative dopamine transporter standardized uptake value in comparison with conventional specific binding ratio in [123I] FP-CIT single-photon emission computed tomography (DaTscan). Neurol Sci 2018; 39:1401-1407. [PMID: 29748936 DOI: 10.1007/s10072-018-3437-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/27/2018] [Indexed: 10/16/2022]
Abstract
PURPOSE We developed a new analytical method to quantify the dopamine transporter (DAT) radiation dose in the striatum on [123I] FP-CIT single-photon emission computed tomography (SPECT). This method is based on the dopamine transporter standardized uptake value (DaTSUV). The purpose of this study was to compare DaTSUV with the classical specific binding ratio (SBR) in the discrimination of dopaminergic neurodegenerative diseases (dNDD) from non-dNDD. METHOD Seventy-seven consecutive patients who underwent DaTscan were included. Patients were divided into a dNDD group (n = 44; 24 men, 20 women; median age 73 years) and a non-dNDD group (n = 33; 14 men, 19 women; median age 75 years) based on their clinical diagnoses. The relationship between each method was evaluated by Pearson's correlation coefficient. Differences in SBR and DaTSUV in each group were evaluated by t test. Pairwise comparison of receiver operating characteristic (ROC) curve analysis was performed to compare the discriminating abilities of each method according to the standard error of the area under the curve (AUC). A value of p < 0.05 was considered statistically significant. RESULT There was a significant strong correlation between DaTSUV and SBR (r = 0.910 [95% CI = 0.862-0.942], p < 0.001). The dNDD group showed significantly lower SBR (3.48 [1.25-7.91] vs 6.58 [3.81-11.1], p < 0.001) and DaTSUV (4.91 [1.59-13.6] vs 8.61 [2.29-15.6], p < 0.001) than the non-dNDD group. The discriminating ability of SBR (AUC = 0.918) was significantly higher than that of DaTSUV (AUC = 0.838, p = 0.0176). CONCLUSION DaTSUV has a good correlation with SBR, but it could not exceed SBR for discriminating dNDD from non-dNDD.
Collapse
Affiliation(s)
- Yuichi Wakabayashi
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Ryuichi Takahashi
- Department of Neurology, Hyogo Prefectural Rehabilitation Hospital at Nishi-Harima, Hyogo, Japan
| | - Tomonori Kanda
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Feibi Zeng
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Munenobu Nogami
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Kazunari Ishii
- Department of Radiology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Takamichi Murakami
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| |
Collapse
|
26
|
Riederer P, Jellinger KA, Kolber P, Hipp G, Sian-Hülsmann J, Krüger R. Lateralisation in Parkinson disease. Cell Tissue Res 2018; 373:297-312. [PMID: 29656343 DOI: 10.1007/s00441-018-2832-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 03/21/2018] [Indexed: 01/11/2023]
Abstract
Asymmetry of dopaminergic neurodegeneration and subsequent lateralisation of motor symptoms are distinctive features of Parkinson's disease compared to other forms of neurodegenerative or symptomatic parkinsonism. Even 200 years after the first description of the disease, the underlying causes for this striking clinicopathological feature are not yet fully understood. There is increasing evidence that lateralisation of disease is due to a complex interplay of hereditary and environmental factors that are reflected not only in the concept of dominant hemispheres and handedness but also in specific susceptibilities of neuronal subpopulations within the substantia nigra. As a consequence, not only the obvious lateralisation of motor symptoms occurs but also patterns of associated non-motor signs are defined, which include cognitive functions, sleep behaviour or olfaction. Better understanding of the mechanisms contributing to lateralisation of neurodegeneration and the resulting patterns of clinical phenotypes based on bilateral post-mortem brain analyses and clinical studies focusing on right/left hemispheric symptom origin will help to develop more targeted therapeutic approaches, taking into account subtypes of PD as a heterogeneous disorder.
Collapse
Affiliation(s)
- P Riederer
- Center of Mental Health, Clinic and Policlinic for Psychiatry, Psychosomatics and Psychotherapy, University Hospital Würzburg, Margarete-Höppel-Platz 1, 97080, Würzburg, Germany. .,Psychiatry Department of Clinical Research, University of Southern Denmark, Odense University Hospital, J.B. Winsløws Vej 18, Indgang 220 A, DK-5000, Odense C, Denmark.
| | - K A Jellinger
- Institute of Clinical Neurobiology, Alberichgasse 5/13, A-1150, Vienna, Austria
| | - P Kolber
- Parkinson Research Clinic, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - G Hipp
- Parkinson Research Clinic, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - J Sian-Hülsmann
- Department of Medical Physiology, University of Nairobi, PO Box 30197, Nairobi, 00100, Kenya
| | - R Krüger
- Parkinson Research Clinic, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| |
Collapse
|
27
|
Xu Z, Arbizu J, Pavese N. PET Molecular Imaging in Atypical Parkinsonism. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2018; 142:3-36. [DOI: 10.1016/bs.irn.2018.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
28
|
Brumberg J, Isaias IU. SPECT Molecular Imaging in Atypical Parkinsonism. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2018; 142:37-65. [DOI: 10.1016/bs.irn.2018.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
29
|
Matsusue E, Fujihara Y, Tanaka K, Aozasa Y, Shimoda M, Nakayasu H, Nakamura K, Ogawa T. The Utility of the Combined Use of 123I-FP-CIT and 123I-MIBG Myocardial Scintigraphy in Differentiating Parkinson’s Disease from Other Parkinsonian Syndromes. Yonago Acta Med 2018. [DOI: 10.33160/yam.2018.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Eiji Matsusue
- *Department of Radiology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Yoshio Fujihara
- *Department of Radiology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Kenichiro Tanaka
- †Department of Neurology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Yuki Aozasa
- †Department of Neurology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Manabu Shimoda
- †Department of Neurology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Hiroyuki Nakayasu
- †Department of Neurology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Kazuhiko Nakamura
- *Department of Radiology, Tottori Prefectural Central Hospital, Tottori 680-0901, Japan
| | - Toshihide Ogawa
- ‡Division of Radiology, Department of Pathophysiological Therapeutic Science, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| |
Collapse
|
30
|
The utility of the combination of a SPECT study with [123I]-FP-CIT of dopamine transporters and [123I]-MIBG myocardial scintigraphy in differentiating Parkinson disease from other degenerative parkinsonian syndromes. Nucl Med Commun 2017; 38:487-492. [PMID: 28410288 PMCID: PMC5433627 DOI: 10.1097/mnm.0000000000000674] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective Molecular imaging of nigrostriatal dopamine transporters (DAT) and sympathetic cardiac innervation with single-photon emission computed tomography (SPECT) are useful tools for differentiating idiopathic Parkinson disease (PD) from other degenerative parkinsonian syndromes (non-PD). Nevertheless, these modalities are often insufficient for achieving a definite diagnosis. The aims of this study were to evaluate the diagnostic accuracy of the combination of these tools. Materials and methods The SPECT radiotracers [123I]-N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl)-nortropane (FP-CIT) and meta-[123I]-iodobenzylguanidine (MIBG) were used to research presynaptic dopaminergic projections (DAT SPECT) and myocardial adrenergic innervation (MIBG scintigraphy), respectively. PD patients (n=15; age: 61.5±13.6 years) and non-PD patients (n=19; age: 62.6±14.2 years) who underwent both tests were enrolled in this study. Receiver-operating characteristic analyses were used to set the cutoff values of the specific binding ratio in DAT SPECT and the heart to mediastinum ratio in delayed scan in MIBG scintigraphy for differentiating PD from non-PD. We calculated the sensitivity, specificity, and test accuracy of the individual methods and also the combination of these two modalities. Results When DAT SPECT and MIBG scintigraphy were used individually, they showed mild accuracy in differentiating PD from non-PD (DAT, 67.6%; MIBG, 67.6%). The combination of the two approaches using cutoff values of less than 3.24 for the specific binding ratio and less than 2.745 for the delayed heart to mediastinum ratio enabled more accurate differentiation between PD and non-PD. The accuracy of these indices in distinguishing PD from non-PD was 79.4%. Conclusion These results suggested that the combination of DAT SPECT and MIBG scintigraphy may improve the diagnostic accuracy in differentiating PD from non-PD.
Collapse
|
31
|
Additional Value of Early-Phase 18F-FP-CIT PET Image for Differential Diagnosis of Atypical Parkinsonism. Clin Nucl Med 2017; 42:e80-e87. [PMID: 27922865 DOI: 10.1097/rlu.0000000000001474] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Regional cerebral perfusion is coupled to metabolism in general. Early perfusion dominant imaging using F-FP-CIT PET (pCIT) may provide complementary information to delayed dopamine transporter dominant images. We investigated the ability of pCIT to differentiate atypical Parkinson disorder from Parkinson disease (PD) compared to FDG and the image quality for optimizing the acquisition time. METHODS Sixty-seven subjects [PD, 23 subjects; multiple system atrophy-cerebellar type (MSA-C), 27 subjects; MSA-Parkinson type (MSA-P), 12 subjects; and progressive supranuclear palsy (PSP), 5 subjects] underwent F-FP-CIT and FDG PET. Using dynamic PET data acquired during the first 10 minutes after F-FP-CIT administration, we generated potential perfusion images of 0 to 5 (pCIT-5m), 0 to 7 (pCIT-7m), and 0 to 10 (pCIT-10m) minutes. We compared regional uptake between groups in pCIT and FDG images and image quality among pCIT images using visual, quantitative, or statistical parametric mapping analyses. RESULTS Regional cerebral uptake of pCITs correlated well to that of the FDG images (R > 0.5, all). Multiple system atrophy-cerebellar type and MSA-P groups show different regional uptake patterns compared with PD group on pCITs in quantitative and statistical parametric mapping analyses, analogous to FDG images, but not in the PSP group. In visual analysis, concordance rates between each pCIT and FDG image were high (92.3%-96.0%, regional; 86.2%-93.1%, diagnostic), and there was no significant difference among pCITs. However, pCIT-10m discriminated PSP better than others and showed higher signal-to-noise ratio (P = 0.001). CONCLUSION F-FP-CIT PETs with the first 10 minutes could be useful for the differential diagnosis of atypical Parkinson disorder by providing complementary FDG-like information to the dopamine transporter binding on late-phase FP-CIT images.
Collapse
|
32
|
Shaikh AG. Tremor analysis separates Parkinson’s disease and dopamine receptor blockers induced parkinsonism. Neurol Sci 2017; 38:855-863. [DOI: 10.1007/s10072-017-2852-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/15/2017] [Indexed: 10/20/2022]
|
33
|
Joling M, Vriend C, van den Heuvel OA, Raijmakers PG, Jones PA, Berendse HW, Booij J. Analysis of Extrastriatal 123I-FP-CIT Binding Contributes to the Differential Diagnosis of Parkinsonian Diseases. J Nucl Med 2016; 58:1117-1123. [DOI: 10.2967/jnumed.116.182139] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/07/2016] [Indexed: 11/16/2022] Open
|
34
|
Progression of Regional Microstructural Degeneration in Parkinson's Disease: A Multicenter Diffusion Tensor Imaging Study. PLoS One 2016; 11:e0165540. [PMID: 27798653 PMCID: PMC5087900 DOI: 10.1371/journal.pone.0165540] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/13/2016] [Indexed: 01/11/2023] Open
Abstract
This study aimed to identify the utility of diffusion tensor imaging (DTI) in measuring the regional distribution of abnormal microstructural progression in patients with Parkinson’s disease who were enrolled in the Parkinson's progression marker initiative (PPMI). One hundred and twenty two de-novo PD patients (age = 60.5±9) and 50 healthy controls (age = 60.6±11) had DTI scans at baseline and 12.6±1 months later. Automated image processing included an intra-subject registration of all time points and an inter-subjects registration to a brain atlas. Annualized rates of DTI variations including fractional anisotropy (FA), radial (rD) and axial (aD) diffusivity were estimated in a total of 118 white matter and subcortical regions of interest. A mixed effects model framework was used to determine the degree to which DTI changes differed in PD relative to changes in healthy subjects. Significant DTI changes were also tested for correlations with changes in clinical measures, dopaminergic imaging and CSF biomarkers in PD patients. Compared to normal aging, PD was associated with higher rates of FA reduction, rD and aD increases predominantly in the substantia nigra, midbrain and thalamus. The highest rates of FA reduction involved the substantia nigra (3.6±1.4%/year from baseline, whereas the highest rates of increased diffusivity involved the thalamus (rD: 8.0±2.9%/year, aD: 4.0±1.5%/year). In PD patients, high DTI changes in the substantia nigra correlated with increasing dopaminergic deficits as well as with declining α-synuclein and total tau protein concentrations in cerebrospinal fluid. Increased DTI rates in the thalamus correlated with progressive decline in global cognition in PD. The results suggest that higher rates of regional microstructural degeneration are potential markers of PD progression.
Collapse
|
35
|
Badoud S, Van De Ville D, Nicastro N, Garibotto V, Burkhard PR, Haller S. Discriminating among degenerative parkinsonisms using advanced (123)I-ioflupane SPECT analyses. Neuroimage Clin 2016; 12:234-40. [PMID: 27489771 PMCID: PMC4950578 DOI: 10.1016/j.nicl.2016.07.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/23/2016] [Accepted: 07/04/2016] [Indexed: 11/26/2022]
Abstract
(123)I-ioflupane single photon emission computed tomography (SPECT) is a sensitive and well established imaging tool in Parkinson's disease (PD) and atypical parkinsonian syndromes (APS), yet a discrimination between PD and APS has been considered inconsistent at least based on visual inspection or simple region of interest analyses. We here reappraise this issue by applying advanced image analysis techniques to separate PD from the various APS. This study included 392 consecutive patients with degenerative parkinsonism undergoing (123)I-ioflupane SPECT at our institution over the last decade: 306 PD, 24 multiple system atrophy (MSA), 32 progressive supranuclear palsy (PSP) and 30 corticobasal degeneration (CBD) patients. Data analysis included voxel-wise univariate statistical parametric mapping and multivariate pattern recognition using linear discriminant classifiers. MSA and PSP showed less ioflupane uptake in the head of caudate nucleus relative to PD and CBD, yet there was no difference between MSA and PSP. CBD had higher uptake in both putamen relative to PD, MSA and PSP. Classification was significant for PD versus APS (AUC 0.69, p < 0.05) and between APS subtypes (MSA vs CBD AUC 0.80, p < 0.05; MSA vs PSP AUC 0.69 p < 0.05; CBD vs PSP AUC 0.69 p < 0.05). Both striatal and extra-striatal regions contain classification information, yet the combination of both regions does not significantly improve classification accuracy. PD, MSA, PSP and CBD have distinct patterns of dopaminergic depletion on (123)I-ioflupane SPECT. The high specificity of 84-90% for PD versus APS indicates that the classifier is particularly useful for confirming APS cases.
Collapse
Affiliation(s)
- Simon Badoud
- Neurology Division, Department of Clinical Neurosciences (NEUCLI), Geneva University Hospitals, Switzerland
- Neurophysiology Unit, Department of Medicine, University of Fribourg (CH), Switzerland
- Faculty of Medicine, University of Geneva, Switzerland
| | - Dimitri Van De Ville
- Department of Imaging and Medical Informatics, University Hospitals of Geneva, Faculty of Medicine, University of Geneva, Switzerland
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Switzerland
| | - Nicolas Nicastro
- Neurology Division, Department of Clinical Neurosciences (NEUCLI), Geneva University Hospitals, Switzerland
| | - Valentina Garibotto
- Faculty of Medicine, University of Geneva, Switzerland
- Nuclear Medicine and Molecular Imaging Division, Department of Imaging and Medical Informatics, University Hospitals of Geneva, Switzerland
| | - Pierre R. Burkhard
- Neurology Division, Department of Clinical Neurosciences (NEUCLI), Geneva University Hospitals, Switzerland
- Faculty of Medicine, University of Geneva, Switzerland
| | - Sven Haller
- Faculty of Medicine, University of Geneva, Switzerland
- Affidea Centre de Diagnostic Radiologique de Carouge CDRC, Geneva, Switzerland
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden
- Department of Neuroradiology, University Hospital Freiburg, Germany
| |
Collapse
|
36
|
Kwon GH, Jang J, Choi HS, Hwang EJ, Jung SL, Ahn KJ, Kim BS, Yoo IR, Kim SH, Haacke EM. The phase value of putamen measured by susceptibility weighted images in Parkinson's disease and in other forms of Parkinsonism: a correlation study with F18 FP-CIT PET. Acta Radiol 2016; 57:852-60. [PMID: 26377263 DOI: 10.1177/0284185115604515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/10/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND Iron deposition of basal ganglia in Parkinson's disease (PD) can be measured using susceptibility weighted images (SWI) on magnetic resonance imaging (MRI). Fluoropropyl carbomethoxy-3b-4-iodophenyltropane (F18 FP-CIT) positron emission tomography (PET) has been used to differentiate Parkinsonism. PURPOSE To compare SWI phase values in Parkinsonian syndrome and age-matched control and to correlate them with F18 FP-CIT PET. MATERIAL AND METHODS Retrospectively, patients with Parkinsonian movement disorder (n = 62) and age-matched control (n = 16) were enrolled. Mean phase values on SWI were measured by region of interest (ROI) in putamens and caudate heads. Mean standardized uptake value (SUV) on F18 FP-CIT were measured in the same ROIs of PD (n = 40) and other forms of Parkinsonism (n = 22). A statistical analysis was performed to compare the phase values and SUVs and to correlate them between groups. RESULTS The putaminal mean phase values were higher in Parkinsonism than in the control (P ≤ 0.001). There was no difference of phase value in caudate head among the groups. Also, the mean phase value of putamen between PD and other forms of Parkinsonism was not different. Mean SUV of F18 FP-CIT in the putamen was lower in PD than other forms of Parkinsonism (P ≤ 0.014). However, there was no significant correlation between phase values and mean SUV (P > 0.05). CONCLUSION The putaminal phase value was higher than in Parkinsonian syndrome than in the age-matched controls. F18 FP-CIT PET/CT showed different tracer activity between PD and other forms of Parkinsonism. However, no correlation between phase and SUV values was discovered.
Collapse
Affiliation(s)
- Gene Hyuk Kwon
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jinhee Jang
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Seok Choi
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eo-Jin Hwang
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So-Lyung Jung
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kook-Jin Ahn
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Bum-soo Kim
- Department of Radiology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ie Ryung Yoo
- Department of Nuclear Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung Hoon Kim
- Department of Nuclear Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - E Mark Haacke
- Department of Biomedical Engineering and Radiology, Harper University Hospital, Wayne State University, Detroit, MI, USA
| |
Collapse
|
37
|
Butler B, Sambo D, Khoshbouei H. Alpha-synuclein modulates dopamine neurotransmission. J Chem Neuroanat 2016; 83-84:41-49. [PMID: 27334403 DOI: 10.1016/j.jchemneu.2016.06.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 06/03/2016] [Accepted: 06/11/2016] [Indexed: 01/13/2023]
Abstract
Alpha-synuclein is a small, highly charged protein encoded by the synuclein or SNCA gene that is predominantly expressed in central nervous system neurons. Although its physiological function remains enigmatic, alpha-synuclein is implicated in movement disorders such as Parkinson's disease, multiple system atrophy, and in neurodegenerative diseases such as Dementia with Lewy bodies. Here we have focused on reviewing the existing literature pertaining to wild-type alpha-synuclein structure, its properties, and its potential involvement in regulation of dopamine neurotransmission.
Collapse
Affiliation(s)
- Brittany Butler
- University of Florida, Department of Neuroscience and Department of Psychiatry Gainesville, FL 32611
| | - Danielle Sambo
- University of Florida, Department of Neuroscience and Department of Psychiatry Gainesville, FL 32611
| | - Habibeh Khoshbouei
- University of Florida, Department of Neuroscience and Department of Psychiatry Gainesville, FL 32611.
| |
Collapse
|
38
|
Barbagallo G, Sierra-Peña M, Nemmi F, Traon APL, Meissner WG, Rascol O, Péran P. Multimodal MRI assessment of nigro-striatal pathway in multiple system atrophy and Parkinson disease. Mov Disord 2015; 31:325-34. [PMID: 26676922 DOI: 10.1002/mds.26471] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/02/2015] [Accepted: 10/05/2015] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) and multiple system atrophy (MSA) are two neurodegenerative alpha-synucleinopathies characterized by severe impairment of the nigro-striatal pathway. Based on T1-, T2*-, and diffusion-weighted magnetic resonance imaging (MRI), macro-structural and micro-structural abnormalities in these diseases can be detected. OBJECTIVE This study was undertaken to compare the nigro-striatal changes that occur in patients with PD with those in patients with both variants of MSA (the parkinsonian variant, MSA-P, and the cerebellar variant, MSA-C), and to explore correlations between different MRI parameters and clinical data. METHODS We simultaneously measured volume, T2* relaxation rates, and mean diffusivity in nigro-striatal structures (substantia nigra, caudate nucleus, and putamen) of 26 patients with PD and 29 patients with MSA (16 with MSA-P and 13 with MSA-C). RESULTS Significant changes in the putamina in patients with MSA were observed compared with patients with PD. Patients with MSA-P had higher mean diffusivity values in their putamina than did patients with PD or MSA-C. The putamina of both subgroups of MSA had higher T2* relaxation rates values than PD. Remarkably, discriminant analysis showed that using two measurements of microstructural damage (T2* relaxation rates and mean diffusivity in the putamen) allowed 96% accuracy to distinguish patients with PD from those with MSA-P. Correlation analyses between MRI findings and clinical variables revealed that patients with PD showed significant correlations only at the nigra. In patients with MSA, clinical variables correlated with MRI findings in both the nigra and striatum. CONCLUSIONS Multimodal MRI reveals different pattern of nigro-striatal involvement in patients with PD and patients with MSA.
Collapse
Affiliation(s)
- Gaetano Barbagallo
- INSERM, Imagerie Cérébrale et Handicaps Neurologiques, UMR 825, 31059, Toulouse, France.,Université de Toulouse (UPS), Imagerie Cérébrale et Handicaps Neurologiques, Toulouse, France.,Institute of Neurology, University Magna Graecia, Catanzaro, Italy
| | - Maria Sierra-Peña
- Service of Neurology, University Hospital "Marqués de Valdecilla (IFIMAV)," University of Cantabria and "Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED),", Santander, Spain
| | - Federico Nemmi
- Neuroscience Department, Retzius vag 8, Karolinska Institutet, Stockholm, Sweden
| | - Anne Pavy-Le Traon
- Centre de Référence Atrophie Multisystématisée, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Wassilios G Meissner
- Centre de Référence Atrophie Multisystématisée, Centre Hospitalier Universitaire de Bordeaux, Pessac, France.,Service de Neurologie, Centre Hospitalier Universitaire de Bordeaux, Pessac, France.,Université de Bordeaux, Institut des Maladies Neurodégénératives, Bordeaux, France.,CNRS, Institut des Maladies Neurodégénératives, Bordeaux, France
| | - Olivier Rascol
- INSERM, Imagerie Cérébrale et Handicaps Neurologiques, UMR 825, 31059, Toulouse, France.,Université de Toulouse (UPS), Imagerie Cérébrale et Handicaps Neurologiques, Toulouse, France.,Centre de Référence Atrophie Multisystématisée, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.,Département de Pharmacologie Clinique, INSERM CIC1436, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Patrice Péran
- INSERM, Imagerie Cérébrale et Handicaps Neurologiques, UMR 825, 31059, Toulouse, France.,Université de Toulouse (UPS), Imagerie Cérébrale et Handicaps Neurologiques, Toulouse, France
| |
Collapse
|
39
|
Butler B, Saha K, Rana T, Becker JP, Sambo D, Davari P, Goodwin JS, Khoshbouei H. Dopamine Transporter Activity Is Modulated by α-Synuclein. J Biol Chem 2015; 290:29542-54. [PMID: 26442590 DOI: 10.1074/jbc.m115.691592] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Indexed: 12/24/2022] Open
Abstract
The duration and strength of the dopaminergic signal are regulated by the dopamine transporter (DAT). Drug addiction and neurodegenerative and neuropsychiatric diseases have all been associated with altered DAT activity. The membrane localization and the activity of DAT are regulated by a number of intracellular proteins. α-Synuclein, a protein partner of DAT, is implicated in neurodegenerative disease and drug addiction. Little is known about the regulatory mechanisms of the interaction between DAT and α-synuclein, the cellular location of this interaction, and the functional consequences of this interaction on the basal, amphetamine-induced DAT-mediated dopamine efflux, and membrane microdomain distribution of the transporter. Here, we found that the majority of DAT·α-synuclein protein complexes are found at the plasma membrane of dopaminergic neurons or mammalian cells and that the amphetamine-mediated increase in DAT activity enhances the association of these proteins at the plasma membrane. Further examination of the interaction of DAT and α-synuclein revealed a transient interaction between these two proteins at the plasma membrane. Additionally, we found DAT-induced membrane depolarization enhances plasma membrane localization of α-synuclein, which in turn increases dopamine efflux and enhances DAT localization in cholesterol-rich membrane microdomains.
Collapse
Affiliation(s)
- Brittany Butler
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| | - Kaustuv Saha
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| | - Tanu Rana
- the Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, Tennessee 37208
| | - Jonas P Becker
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| | - Danielle Sambo
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| | - Paran Davari
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| | - J Shawn Goodwin
- the Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, Tennessee 37208
| | - Habibeh Khoshbouei
- From the Departments of Neuroscience and Psychiatry University of Florida, Gainesville, Florida 32611 and
| |
Collapse
|
40
|
Zhang Y, Wu IW, Buckley S, Coffey CS, Foster E, Mendick S, Seibyl J, Schuff N. Diffusion tensor imaging of the nigrostriatal fibers in Parkinson's disease. Mov Disord 2015; 30:1229-36. [PMID: 25920732 PMCID: PMC4418199 DOI: 10.1002/mds.26251] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/14/2015] [Accepted: 03/23/2015] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is histopathologically characterized by the loss of dopamine neurons in the substantia nigra pars compacta. The depletion of these neurons is thought to reduce the dopaminergic function of the nigrostriatal pathway, as well as the neural fibers that link the substantia nigra to the striatum (putamen and caudate), causing a dysregulation in striatal activity that ultimately leads to lack of movement control. Based on diffusion tensor imaging, visualizing this pathway and measuring alterations of the fiber integrity remain challenging. The objectives were to 1) develop a diffusion tensor tractography protocol for reliably tracking the nigrostriatal fibers on multicenter data; 2) test whether the integrities measured by diffusion tensor imaging of the nigrostriatal fibers are abnormal in PD; and 3) test whether abnormal integrities of the nigrostriatal fibers in PD patients are associated with the severity of motor disability and putaminal dopamine binding ratios. METHODS Diffusion tensor tractography was performed on 50 drug-naïve PD patients and 27 healthy control subjects from the international multicenter Parkinson's Progression Marker Initiative. RESULTS Tractography consistently detected the nigrostriatal fibers, yielding reliable diffusion measures. Fractional anisotropy, along with radial and axial diffusivity of the nigrostriatal tract, showed systematic abnormalities in patients. In addition, variations in fractional anisotropy and radial diffusivity of the nigrostriatal tract were associated with the degree of motor deficits in PD patients. CONCLUSION Taken together, the findings imply that the diffusion tensor imaging characteristic of the nigrostriatal tract is potentially an index for detecting and staging of early PD.
Collapse
Affiliation(s)
- Yu Zhang
- Center for Imaging of Neurodegenerative Diseases, San Francisco VA Medical Center, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - I-Wei Wu
- Center for Imaging of Neurodegenerative Diseases, San Francisco VA Medical Center, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Shannon Buckley
- Center for Imaging of Neurodegenerative Diseases, San Francisco VA Medical Center, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Christopher S. Coffey
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Eric Foster
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Susan Mendick
- Institute for Neurodegenerative Disorders (IND) and Molecular NeuroImaging, LLC (MNI), New Haven CT, USA
| | - John Seibyl
- Institute for Neurodegenerative Disorders (IND) and Molecular NeuroImaging, LLC (MNI), New Haven CT, USA
| | - Norbert Schuff
- Center for Imaging of Neurodegenerative Diseases, San Francisco VA Medical Center, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| |
Collapse
|
41
|
Ham JH, Cha J, Lee JJ, Baek GM, Sunwoo MK, Hong JY, Shin NY, Sohn YH, Lee JM, Lee PH. Nigrostriatal dopamine-independent resting-state functional networks in Parkinson's disease. Neuroimage 2015; 119:296-304. [PMID: 26143204 DOI: 10.1016/j.neuroimage.2015.06.077] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 05/26/2015] [Accepted: 06/26/2015] [Indexed: 10/23/2022] Open
Abstract
As an indicator of synchronous neural activity, resting-state functional networks are influenced by neuropathological and neurochemical changes in degenerative diseases. To further advance understanding about neurochemical and neuropathological basis for resting-state functional maps, we performed a comparative analysis of resting-state functional connectivity in patients with Parkinson's disease (PD) and drug induced parkinsonism (DIP). Resting-state neuroimaging data were analyzed with a seed-based approach to investigate striatocortical functional connectivity and cortical functional connectivity within the default mode network, executive control network, and the dorsal attention network. The striatal subregions were divided into the more or less affected sides in terms of dopamine transporter uptake. Compared with DIP, PD exhibited an increased cerebellar connectivity from the more affected side of the caudate and the less affected sides of the anterior and the posterior putamen. Additionally, PD showed increased functional connectivity in the anterior prefrontal areas from the more affected side of the anterior putamen and from the less affected side of the posterior putamen. However, PD exhibited decreased cortical functional connectivity from the posterior cingulate cortex in the left temporal area. Finally, DIP patients showed decreased cortical functional connectivity from the dorsolateral prefrontal cortex in frontal and parietal areas compared with PD patients. In summary, the present study demonstrates that PD patients exhibited a unique resting state functional connectivity that may be associated with PD-related pathological changes beyond the dopaminergic system, whereas DIP patients showed altered functional connectivity within executive control network.
Collapse
Affiliation(s)
- Jee Hyun Ham
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - Jungho Cha
- Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
| | - Jae Jung Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - Gwang-Min Baek
- Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
| | - Mun Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, South Korea
| | - Jin Yong Hong
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Na-Young Shin
- Department of Radiology, Ewha Womans University, Seoul, South Korea
| | - Young Ho Sohn
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - Jong-Min Lee
- Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
| | - Phil Hyu Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.
| |
Collapse
|
42
|
Georgiopoulos C, Davidsson A, Engström M, Larsson EM, Zachrisson H, Dizdar N. The diagnostic value of dopamine transporter imaging and olfactory testing in patients with parkinsonian syndromes. J Neurol 2015; 262:2154-63. [PMID: 26122543 DOI: 10.1007/s00415-015-7830-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 06/10/2015] [Accepted: 06/17/2015] [Indexed: 11/27/2022]
Abstract
The aim of the study was to compare the efficacy of olfactory testing and presynaptic dopamine imaging in diagnosing Parkinson's disease (PD) and atypical parkinsonian syndromes (APS); to evaluate if the combination of these two diagnostic tools can improve their diagnostic value. A prospective investigation of 24 PD patients, 16 APS patients and 15 patients with non-parkinsonian syndromes was performed during an 18-month period. Single photon emission computed tomography with the presynaptic radioligand (123)I-FP-CIT (DaTSCAN(®)) and olfactory testing with the Brief 12-item Smell Identification Test (B-SIT) were performed in all patients. DaTSCAN was analysed semi-quantitatively, by calculating two different striatal uptake ratios, and visually according to a predefined ranking scale. B-SIT score was significantly lower for PD patients, but not significantly different between APS and non-parkinsonism. The visual assessment of DaTSCAN had higher sensitivity, specificity and diagnostic accuracy compared to olfactory testing. Most PD patients (75%) had visually predominant dopamine depletion in putamen, while most APS patients (56%) had visually severe dopamine depletion both in putamen and in caudate nucleus. The combination of DaTSCAN and B-SIT led to a higher rate of correctly classified patients. Olfactory testing can distinguish PD from non-parkinsonism, but not PD from APS or APS from non-parkinsonism. DaTSCAN is more efficient than olfactory testing and can be valuable in differentiating PD from APS. However, combining olfactory testing and DaTSCAN imaging has a higher predictive value than these two methods separately.
Collapse
Affiliation(s)
- Charalampos Georgiopoulos
- Department of Radiology, Linköping University, 581 85, Linköping, Sweden. .,Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden. .,Center for Medical Image Science and Visualization (CMIV), Linköping University, 581 85, Linköping, Sweden.
| | - Anette Davidsson
- Department of Clinical Physiology, Linköping University, 581 85, Linköping, Sweden.,Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden
| | - Maria Engström
- Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, 581 85, Linköping, Sweden
| | - Elna-Marie Larsson
- Department of Surgical Sciences/Radiology, Uppsala University, Akademiska sjukhuset, 751 85, Uppsala, Sweden
| | - Helene Zachrisson
- Department of Clinical Physiology, Linköping University, 581 85, Linköping, Sweden.,Department of Medical and Health Sciences, Linköping University, 581 85, Linköping, Sweden
| | - Nil Dizdar
- Department of Neurology, Linköping University, 581 85, Linköping, Sweden.,Department of Clinical and Experimental Medicine, Linköping University, 581 85, Linköping, Sweden
| |
Collapse
|
43
|
Fazio P, Svenningsson P, Forsberg A, Jönsson EG, Amini N, Nakao R, Nag S, Halldin C, Farde L, Varrone A. Quantitative Analysis of 18F-(E)-N-(3-Iodoprop-2-Enyl)-2β-Carbofluoroethoxy-3β-(4′-Methyl-Phenyl) Nortropane Binding to the Dopamine Transporter in Parkinson Disease. J Nucl Med 2015; 56:714-20. [DOI: 10.2967/jnumed.114.152421] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 02/25/2015] [Indexed: 01/27/2023] Open
|
44
|
Differentiating multiple-system atrophy from Parkinson's disease. Clin Radiol 2015; 70:555-64. [PMID: 25752581 DOI: 10.1016/j.crad.2015.01.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 12/30/2014] [Accepted: 01/16/2015] [Indexed: 12/17/2022]
Abstract
The purpose of this review is to illustrate the differentiating features of multiple-system atrophy from Parkinson's disease at MRI. The various MRI sequences helpful in the differentiation will be discussed, including newer methods, such as diffusion tensor imaging, MR spectroscopy, and nuclear imaging.
Collapse
|
45
|
Ba F, Martin WW. Dopamine transporter imaging as a diagnostic tool for parkinsonism and related disorders in clinical practice. Parkinsonism Relat Disord 2015; 21:87-94. [PMID: 25487733 DOI: 10.1016/j.parkreldis.2014.11.007] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/12/2014] [Accepted: 11/12/2014] [Indexed: 01/22/2023]
|
46
|
Sako W, Uluğ AM, Eidelberg D. Functional Imaging to Study Movement Disorders. Mov Disord 2015. [DOI: 10.1016/b978-0-12-405195-9.00012-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
47
|
Politis M. Neuroimaging in Parkinson disease: from research setting to clinical practice. Nat Rev Neurol 2014; 10:708-22. [PMID: 25385334 DOI: 10.1038/nrneurol.2014.205] [Citation(s) in RCA: 165] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Over the past three decades, neuroimaging studies-including structural, functional and molecular modalities-have provided invaluable insights into the mechanisms underlying Parkinson disease (PD). Observations from multimodal neuroimaging techniques have indicated changes in brain structure and metabolic activity, and an array of neurochemical changes that affect receptor sites and neurotransmitter systems. Characterization of the neurobiological alterations that lead to phenotypic heterogeneity in patients with PD has considerably aided the in vivo investigation of aetiology and pathophysiology, and the identification of novel targets for pharmacological or surgical treatments, including cell therapy. Although PD is now considered to be very complex, no neuroimaging modalities are specifically recommended for routine use in clinical practice. However, conventional MRI and dopamine transporter imaging are commonly used as adjuvant tools in the differential diagnosis between PD and nondegenerative causes of parkinsonism. First-line neuroimaging tools that could have an impact on patient prognosis and treatment strategies remain elusive. This Review discusses the lessons learnt from decades of neuroimaging research in PD, and the promising new approaches with potential applicability to clinical practice.
Collapse
Affiliation(s)
- Marios Politis
- Neurodegeneration Imaging Group, Department of Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London SE5 8AF, UK
| |
Collapse
|
48
|
Yoon RG, Kim SJ, Kim HS, Choi CG, Kim JS, Oh J, Chung SJ, Lee CS. The utility of susceptibility-weighted imaging for differentiating Parkinsonism-predominant multiple system atrophy from Parkinson's disease: correlation with 18F-flurodeoxyglucose positron-emission tomography. Neurosci Lett 2014; 584:296-301. [PMID: 25450142 DOI: 10.1016/j.neulet.2014.10.046] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/24/2014] [Accepted: 10/28/2014] [Indexed: 11/29/2022]
Abstract
Our study was intended to demonstrate the different signal intensity (SI) pattern of the putamen seen on susceptibility-weighted imaging (SWI) between that of Parkinson's disease (PD) and Parkinsonism-predominant multiple system atrophy (MSA-P), and to correlate it with (18)F-flurodeoxyglucose positron-emission tomography ((18)F-FDG PET). Thirty patients with PD and 17 with MSA-P underwent SWI, and (18)F-FDG PET were included. The SI was measured on SWI in the anterior and posterior halves of the putamen using a region-of-interest (ROI) on both sides. The normalized regional glucose metabolism (standardized uptake value ratio, SUVR) was measured on co-registered (18)F-FDG PET images using the ROI obtained with SWI. Analysis included a group-level comparison of the SI values obtained on SWI, and these results were correlated with the SUVR on (18)F-FDG PET. The SIs of the bilateral posterior, dominant-side of the posterior, mean values of the bilateral anterior and posterior halves of the putamen on SWI, differed significantly between the two groups (P < 0.001, respectively). The SUVR of the all locations also differed significantly between PD and MSA-P (P < 0.001, respectively). There was a moderate degree of positive correlation between the SI and the SUVR of the left posterior half, and mean value of the bilateral posterior putamen in MSA-P (r = 0.634, P = 0.006, r = 0.492, P = 0.045). In conclusion, the low SI seen on the posterior putamen may differentiate MSA-P from PD. Furthermore, low SI in the putamen correlated with hypometabolism on (18)F-FDG PET. Therefore, SWI could be a potential complementary diagnostic tool to (18)F-FDG PET for differentiating these conditions.
Collapse
Affiliation(s)
- Ra Gyoung Yoon
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Sang Joon Kim
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea.
| | - Ho Sung Kim
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Choong Gon Choi
- Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Jae Seung Kim
- Department of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Jungsu Oh
- Department of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Sun J Chung
- Department of Neurology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Chong Sik Lee
- Department of Neurology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| |
Collapse
|
49
|
Davidsson A, Georgiopoulos C, Dizdar N, Granerus G, Zachrisson H. Comparison between visual assessment of dopaminergic degeneration pattern and semi-quantitative ratio calculations in patients with Parkinson's disease and Atypical Parkinsonian syndromes using DaTSCAN® SPECT. Ann Nucl Med 2014; 28:851-9. [PMID: 24997753 DOI: 10.1007/s12149-014-0878-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 06/30/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To verify if (123)I-FP-CIT, DaTSCAN(®) can differentiate early stages of Parkinson's disease (PD) as well as patients with Atypical Parkinsonian syndromes (APS) from manifest Parkinson's disease. METHODS 128 consecutive patients were investigated with (123)I-FP-CIT SPECT during a 4-year period. All patients were diagnosed according to the established consensus criteria for diagnosis of PD (n = 53) and APS (n = 19). Remaining patients were grouped early PD (before onset of L-DOPA medication), (n = 20), vascular PD (n = 6), and non-PD syndromes (n = 30) and SWEDD (n = 1). SPECT images were analyzed visually according to a predefined ranking scale of dopaminergic nerve cell degeneration, distinguishing a posterior-anterior degeneration pattern (egg shape) from a more global and severe degeneration pattern (burst striatum). Striatum uptake ratios were quantitatively analyzed with the 3D software, EXINI. RESULTS In the group of APS patients, the burst striatum pattern was most frequent and found in 61 % (11/18 patients). In PD patients, the egg shape pattern was dominating, especially in early PD where it was present in 95 % (19/20 patients). The positive predictive value for the egg shape pattern to diagnose PD was 92 % in this material (APS and all PD patients) and the specificity 90 % for the burst striatum pattern to exclude APS. The uptake ratios were reduced in both PD and APS patients and closely related to the image ranking. CONCLUSION In this study, we found that in more than half of the patients it was possible to differentiate between PD and APS by visual interpretation only. Similar results were obtained using semi-quantitative uptake ratios. Combining visual assessment with uptake ratios did not add to the discriminating power of DaTSCAN(®) SPECT in this material.
Collapse
Affiliation(s)
- Anette Davidsson
- Division of Cardiovascular Medicine, Clinical Physiology, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, 58185, Linköping, Sweden,
| | | | | | | | | |
Collapse
|
50
|
Benarroch EE. The clinical approach to autonomic failure in neurological disorders. Nat Rev Neurol 2014; 10:396-407. [DOI: 10.1038/nrneurol.2014.88] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|