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Su D, Yang S, Hu W, Wang D, Kou W, Liu Z, Wang X, Wang Y, Ma H, Sui Y, Zhou J, Pan H, Feng T. The Characteristics of Tremor Motion Help Identify Parkinson's Disease and Multiple System Atrophy. Front Neurol 2020; 11:540. [PMID: 32754107 PMCID: PMC7366128 DOI: 10.3389/fneur.2020.00540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 05/14/2020] [Indexed: 11/16/2022] Open
Abstract
Background/Objectives: Distinguishing between Parkinson's disease (PD) and multiple system atrophy (MSA) is challenging in the clinic because patients with these two conditions present with similar symptoms in motor dysfunction. Here, we aimed to determine whether tremor characteristics can serve as novel markers for distinguishing the two conditions. Methods: Ninety-one subjects with clinically diagnosed PD and 93 subjects with MSA were included. Tremor of the limbs was measured in different conditions (such as resting, postural, and weight-holding) using electromyography (EMG) surface electrodes and accelerometers. The dominant frequency, tremor occurrence rate, and harmonic occurrence rate (HOR) of the tremor were then calculated. Results: Our results demonstrated that the tremor dominant frequency in the upper limbs of the MSA group was significantly higher than that in the PD group across all resting (F = 5.717, p = 0.023), postural (F = 13.409, p < 0.001), and weight-holding conditions (F = 9.491, p < 0.001) and that it was not dependent on the patient's age or disease course. The tremor occurrence rate (75.6 vs. 14.9%, χ2 = 68.487, p < 0.001) and HOR (75.0 vs. 4.5%, χ2 = 46.619, p < 0.001) in the resting condition were significantly lower in the MSA group than in the PD group. The sensitivity of the harmonic for PD diagnosis was 75.0% and the specificity was relatively high, in some cases up to 95.5%. The PPV and NPV were 95.2 and 75.9%, respectively. Conclusion: Our study confirmed that several tremor characteristics, including the dominant tremor frequency and the occurrence rate in different conditions, help detect PD and MSA. The presence of harmonics may serve as a novel marker to help distinguish PD from MSA with high sensitivity and specificity.
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Affiliation(s)
- Dongning Su
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Shuo Yang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Wanli Hu
- Department of Hematology and Oncology, Jingxi Campus, Beijing ChaoYang Hospital, Capital Medical University, Beijing, China
| | - Dongxu Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Wenyi Kou
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Zhu Liu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xuemei Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Ying Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Huizi Ma
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Yunpeng Sui
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Junhong Zhou
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale, MA, United States.,Hinda and Arthur Marcus Institute for Aging Research, Harvard Medical School, Boston, MA, United States
| | - Hua Pan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Tao Feng
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
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Cui X, Li L, Yu L, Xing H, Chang H, Zhao L, Qian J, Song Q, Zhou S, Dong C. Gray Matter Atrophy in Parkinson's Disease and the Parkinsonian Variant of Multiple System Atrophy: A Combined ROI- and Voxel-Based Morphometric Study. Clinics (Sao Paulo) 2020; 75:e1505. [PMID: 32555945 PMCID: PMC7279630 DOI: 10.6061/clinics/2020/e1505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 03/20/2020] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES Parkinson's disease (PD) and the parkinsonian variant of multiple system atrophy (MSA-P) are distinct neurodegenerative disorders that share similar clinical features of parkinsonism. The morphological alterations of these diseases have yet to be understood. The purpose of this study was to evaluate gray matter atrophy in PD and MSA-P using regions of interest (ROI)-based measurements and voxel-based morphometry (VBM). METHODS We studied 41 patients with PD, 20 patients with MSA-P, and 39 controls matched for age, sex, and handedness using an improved T1-weighted sequence that eased gray matter segmentation. The gray matter volumes were measured using ROI and VBM. RESULTS ROI volumetric measurements showed significantly reduced bilateral putamen volumes in MSA-P patients compared with those in PD patients and controls (p<0.05), and the volumes of the bilateral caudate nucleus were significantly reduced in both MSA-P and PD patients compared with those in the controls (p<0.05). VBM analysis revealed multifocal cortical and subcortical atrophy in both MSA-P and PD patients, and the volumes of the cerebellum and temporal lobes were remarkably reduced in MSA-P patients compared with the volumes in PD patients (p<0.05). CONCLUSIONS Both PD and MSA-P are associated with gray matter atrophy, which mainly involves the bilateral putamen, caudate nucleus, cerebellum, and temporal lobes. ROI and VBM can be used to identify these morphological alterations, and VBM is more sensitive and repeatable and less time-consuming, which may have potential diagnostic value.
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Affiliation(s)
- Xiaorui Cui
- Department of Neurology, Affiliated Hospital of Xiangnan University, Chenzhou, China
| | - Lan Li
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei Yu
- Department of Neurology, Dalian Friendship Hospital, Dalian, China
| | - Huijuan Xing
- Department of Neurology, The Third People’s Hospital of Dalian, Dalian, China
| | - Hong Chang
- Department of Neurology, The Third People’s Hospital of Dalian, Dalian, China
| | - Li Zhao
- Department of Neurology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jin Qian
- Department of Neurology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qingwei Song
- Department of Radiology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shiyu Zhou
- Department of Psychology, Dalian Medical University, Dalian, China
| | - Chunbo Dong
- Department of Neurology, First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Corresponding author. E-mail:
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3
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Parkinsonism Caused by Viral Encephalitis Affecting the Bilateral Substantia Nigra. Clin Neuroradiol 2019; 29:571-573. [DOI: 10.1007/s00062-019-00769-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 02/08/2019] [Indexed: 10/27/2022]
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4
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Burrell JR, Hodges JR. Falls in frontotemporal dementia and related syndromes. HANDBOOK OF CLINICAL NEUROLOGY 2018; 159:195-203. [PMID: 30482314 DOI: 10.1016/b978-0-444-63916-5.00012-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Frontotemporal dementia (FTD) and related diseases are important causes of younger-onset dementia. Falls may be a source of morbidity and mortality in FTD, but remain underreported, and very few high-quality studies have been performed. In this chapter, we briefly review the clinical features of FTD and related syndromes such as motor neuron disease (MND) and atypical parkinsonian syndromes, such as progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS). Falls are frequently encountered in patients who present with FTD syndromes. Although cognitive impairment is associated with falls generally, motor symptoms and signs, as seen in FTD cases that overlap with atypical parkinsonian disorders such as PSP or CBS, or MND, appear to pose the greatest risk. At present, very few systematic studies have been performed to determine the precise frequency, timing, diagnostic implications, and complications of falls in FTD. Further studies are required to understand the scope of this problem, and to develop effective treatments and management strategies.
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Affiliation(s)
- James R Burrell
- Concord Clinical School, Sydney Medical School, University of Sydney, Sydney, Australia; Brain and Mind Centre, University of Sydney Medical School, Sydney, NSW, Australia.
| | - John R Hodges
- Brain and Mind Centre, University of Sydney Medical School, Sydney, NSW, Australia
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Mäkinen E, Joutsa J, Isotalo J, Kaasinen V. No relevant midbrain atrophy in Parkinson's disease. Acta Neurol Scand 2016; 134:378-381. [PMID: 27265349 DOI: 10.1111/ane.12551] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2015] [Indexed: 11/28/2022]
Abstract
AIMS OF THE STUDY To investigate whether significant midbrain atrophy is present in Parkinson's disease (PD), and if so, whether it can be used as a marker of striatal dopaminergic degeneration. METHODS In total, 150 PD patients and 155 controls were scanned with both brain dopamine transporter (DAT) [123 I]FP-CIT SPECT and 1.5T MRI. Midbrain atrophy was measured from sagittal MRIs using the midbrain-to-pons ratios. Both striatal region-of-interest-based (Brass) and striatal and extrastriatal voxel-by-voxel-based DAT binding (SPM8) were investigated in relation to midbrain atrophy. RESULTS The midbrain-to-pons ratios in PD patients were slightly lower than those in the controls (mean 0.59 vs 0.61, P < 0.05). The ratios did not significantly correlate with striatal or extrastriatal [123 I]FP-CIT uptake in controls or patients with PD. CONCLUSIONS Mild midbrain atrophy is present in PD and can be detected with MRI. However, the midbrain atrophy in PD is not associated with the level of striatal dopaminergic dysfunction, and midbrain measurements therefore cannot be used as a clinically useful predictor of dopamine function.
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Affiliation(s)
- E. Mäkinen
- Division of Clinical Neurosciences; Turku University Hospital and University of Turku; Turku Finland
| | - J. Joutsa
- Division of Clinical Neurosciences; Turku University Hospital and University of Turku; Turku Finland
- Turku PET Centre; Turku University Hospital and University of Turku; Turku Finland
| | - J. Isotalo
- Division of Clinical Neurosciences; Turku University Hospital and University of Turku; Turku Finland
| | - V. Kaasinen
- Division of Clinical Neurosciences; Turku University Hospital and University of Turku; Turku Finland
- Turku PET Centre; Turku University Hospital and University of Turku; Turku Finland
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6
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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.
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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
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7
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Moretti DV, Binetti G, Zanetti O, Frisoni GB. Behavioral and neurophysiological effects of transdermal rotigotine in atypical parkinsonism. Front Neurol 2014; 5:85. [PMID: 24926284 PMCID: PMC4046164 DOI: 10.3389/fneur.2014.00085] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 05/16/2014] [Indexed: 11/27/2022] Open
Abstract
Effective therapies for the so-called atypical parkinsonian syndrome (APS) such as multiple system atrophy (MSA), progressive supranuclear palsy (PSP), or corticobasal syndrome (CBS) are not available. Dopamine agonists (DA) are not often used in APS because of inefficacy and in a minority of case, their side effects, like dyskinesias, impairment of extrapyramidal symptoms or the appearance of psychosis, and REM sleep behavioral disorders (RBD). Transdermal rotigotine (RTG) is a non-ergot dopamine agonist indicated for use in early and advanced Parkinson’s disease with a good tolerability and safety. Moreover, its action on a wide range of dopamine receptors, D1, D2, D3, unlike other DA, could make it a good option in APS, where a massive dopamine cell loss is documented. In this pilot, observational open-label study we evaluate the efficacy and tolerability of RTG in patients affected by APS. Thirty-two subjects with diagnosis of APS were treated with transdermal RTG. APS diagnosis was: MSA parkinsonian type (MSA-P), MSA cerebellar type (MSA-C), PSP, and CBS. Patients were evaluated by UPDRS-III, neuropsychiatric inventory, mini mental state examination at baseline, and after 6, 12, and 18 months. The titration schedule was maintained very flexible, searching the major clinical effect and the minor possible adverse events (AEs) at each visit. AEs were recorded. APS patients treated with RTG show an overall decrease of UPDRS-III scores without increasing behavioral disturbances. Only three patients were dropped out of the study. Main AEs were hypotension, nausea, vomiting, drowsiness, and tachycardia. The electroencephalographic recording power spectra analysis shows a decrease of theta and an increase of low alpha power. In conclusion, transdermal RTG seems to be effective and well tolerated in APS patients.
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Affiliation(s)
| | | | - Orazio Zanetti
- IRCCS San Giovanni di Dio Fatebenefratelli , Brescia , Italy
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8
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Kaindlstorfer C, Granata R, Wenning GK. Tremor in Multiple System Atrophy - a review. TREMOR AND OTHER HYPERKINETIC MOVEMENTS (NEW YORK, N.Y.) 2013; 3. [PMID: 24116345 PMCID: PMC3779823 DOI: 10.7916/d8nv9gz9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 07/23/2013] [Indexed: 01/14/2023]
Abstract
BACKGROUND Multiple system atrophy (MSA) is a rare neurodegenerative movement disorder characterized by a rapidly progressive course. The clinical presentation can include autonomic failure, parkinsonism, and cerebellar signs. Differentiation from Parkinson's disease (PD) is difficult if there is levodopa-responsive parkinsonism, rest tremor, lack of cerebellar ataxia, or mild/delayed autonomic failure. Little is known about tremor prevalence and features in MSA. METHODS We performed a PubMed search to collect the literature on tremor in MSA and considered reports published between 1900 and 2013. RESULTS Tremor is a common feature among MSA patients. Up to 80% of MSA patients show tremor, and patients with the parkinsonian variant of MSA are more commonly affected. Postural tremor has been documented in about half of the MSA population and is frequently referred to as jerky postural tremor with evidence of minipolymyoclonus on neurophysiological examination. Resting tremor has been reported in about one-third of patients but, in contrast to PD, only 10% show typical parkinsonian "pill-rolling" rest tremor. Some patients exhibit intention tremor associated with cerebellar dysmetria. In general, MSA patients can have more than one tremor type owing to a complex neuropathology that includes both the basal ganglia and pontocerebellar circuits. DISCUSSION Tremor is not rare in MSA and might be underrecognized. Rest, postural, action and intention tremor can all be present, with jerky tremulous movements of the outstretched hands being the most characteristic. However, reviewing the data on tremor in MSA suggests that not every shaky movement satisfies tremor criteria; therefore, further studies are needed.
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Affiliation(s)
- Christine Kaindlstorfer
- Division of Neurobiology, Department of Neurology, Medical University Innsbruck, Innsbruck, Austria
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9
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Liscic RM, Srulijes K, Gröger A, Maetzler W, Berg D. Differentiation of progressive supranuclear palsy: clinical, imaging and laboratory tools. Acta Neurol Scand 2013; 127:362-70. [PMID: 23406296 DOI: 10.1111/ane.12067] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2012] [Indexed: 11/28/2022]
Abstract
Progressive supranuclear palsy (PSP) is the most common atypical parkinsonian syndrome comprising two main clinical subtypes: Richardson's syndrome (RS), characterized by prominent postural instability, supranuclear vertical gaze palsy and frontal dysfunction; and PSP-parkinsonism (PSP-P) which is characterized by an asymmetric onset, tremor and moderate initial therapeutic response to levodopa. The early clinical features of PSP-P are often difficult to discern from idiopathic Parkinson's disease (PD), and other atypical parkinsonian disorders, including multiple system atrophy (MSA) and corticobasal syndrome (CBS). In addition, rare PSP subtypes may be overlooked or misdiagnosed if there are atypical features present. The differentiation between atypical parkinsonian disorders and PD is important because the prognoses are different, and there are different responses to therapy. Structural and functional imaging, although currently of limited diagnostic value for individual use in early disease, may contribute valuable information in the differential diagnosis of PSP. A growing body of evidence shows the importance of CSF biomarkers in distinguishing between atypical parkinsonian disorders particularly early in their course when disease-modifying therapies are becoming available. However, specific diagnostic CSF biomarkers have yet to be identified. In the absence of reliable disease-specific markers, we provide an update of the recent literature on the assessment of clinical symptoms, pathology, neuroimaging and biofluid markers that might help to distinguish between these overlapping conditions early in the course of the disease.
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Affiliation(s)
- R M Liscic
- Center of Neurology, Department of Neurodegeneration, Hertie Institute for Clinical Brain Research, University of Tuebingen, Germany
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10
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Abstract
An under-appreciated clue about pathogenesis in Parkinson disease (PD) is the distribution of pathology in the early and middle stages of the disease. This pathological 'roadmap' shows that in addition to dopaminergic neurons in the substantia nigra pars compacta (SNc), a significant number of other central and peripheral neuronal populations exhibit Lewy pathology, phenotypic dysregulation or frank degeneration in PD patients. This spatially distributed, at-risk population of neurons shares a number of features, including autonomously generated activity, broad action potentials, low intrinsic calcium buffering capacity and long, poorly myelinated, highly branched axons. Many, and perhaps all, of these traits add to the metabolic burden in these neurons, suggesting that mitochondrial deficits could drive pathogenesis in PD-in agreement with a large segment of the literature. What is less clear is how this neuronal phenotype might shape the susceptibility to proteostatic dysfunction or to the spread of α-synuclein fibrils deposited in the extracellular space. The review explores the literature on these issues and their translational implications.
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Affiliation(s)
- D James Surmeier
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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11
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Huang Y, Halliday GM. Aspects of innate immunity and Parkinson's disease. Front Pharmacol 2012; 3:33. [PMID: 22408621 PMCID: PMC3296959 DOI: 10.3389/fphar.2012.00033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 02/19/2012] [Indexed: 12/21/2022] Open
Abstract
Genetic studies on PARK genes have identified dysfunction in proteasomal, lysosomal, and mitochondrial enzymes as pathogenic for Parkinson’s disease (PD). We review the role of these and similar enzymes in mediating innate immune signaling. In particular, we have identified that a number of PARK gene products as well as other enzymes have roles in innate immune signaling as well as DNA repair and regulation, ubiquitination, mitochondrial functioning, and synaptic trafficking. PD enzymatic dysfunction is likely to contribute to inadequate innate immune responses to a variety of extra- and intra-cellular stimuli, with a number of the innate immunity related enzymes found in the characteristic Lewy body pathology of PD. The decrease in innate immunity in PD is associated with an increase in markers of adaptive immunity, and recent GWAS studies have identified variants in human leukocyte antigen region as associated with late-onset sporadic PD (Hamza et al., 2010; Hill-Burns et al., 2011). Intriguing new data also suggest that peripheral immune responses may be involved, giving some potential to alleviate such peripheral dysfunction more directly in patients with PD. It is now important to identify the cell type specific immune responses contributing to the initial changes that occur in PD, as well as to the propagating immune responses important for the progression of PD pathology between cells and within the brain. Overall, a complex interplay between different types of immunity appear to be involved in the underlying pathology of PD.
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Affiliation(s)
- Yue Huang
- Neuroscience Research Australia Sydney, NSW, Australia
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12
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13
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Cabeza-Arvelaiz Y, Fleming SM, Richter F, Masliah E, Chesselet MF, Schiestl RH. Analysis of striatal transcriptome in mice overexpressing human wild-type alpha-synuclein supports synaptic dysfunction and suggests mechanisms of neuroprotection for striatal neurons. Mol Neurodegener 2011; 6:83. [PMID: 22165993 PMCID: PMC3271045 DOI: 10.1186/1750-1326-6-83] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 12/13/2011] [Indexed: 01/08/2023] Open
Abstract
Background Alpha synuclein (SNCA) has been linked to neurodegenerative diseases (synucleinopathies) that include Parkinson's disease (PD). Although the primary neurodegeneration in PD involves nigrostriatal dopaminergic neurons, more extensive yet regionally selective neurodegeneration is observed in other synucleinopathies. Furthermore, SNCA is ubiquitously expressed in neurons and numerous neuronal systems are dysfunctional in PD. Therefore it is of interest to understand how overexpression of SNCA affects neuronal function in regions not directly targeted for neurodegeneration in PD. Results The present study investigated the consequences of SNCA overexpression on cellular processes and functions in the striatum of mice overexpressing wild-type, human SNCA under the Thy1 promoter (Thy1-aSyn mice) by transcriptome analysis. The analysis revealed alterations in multiple biological processes in the striatum of Thy1-aSyn mice, including synaptic plasticity, signaling, transcription, apoptosis, and neurogenesis. Conclusion The results support a key role for SNCA in synaptic function and revealed an apoptotic signature in Thy1-aSyn mice, which together with specific alterations of neuroprotective genes suggest the activation of adaptive compensatory mechanisms that may protect striatal neurons in conditions of neuronal overexpression of SNCA.
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Affiliation(s)
- Yofre Cabeza-Arvelaiz
- Department of Pathology and Environmental Health Sciences, The Geffen School of Medicine and School of Public Health, University of California, Los Angeles, 650 Charles E, Young Dr. S, CHS 71-295, Los Angeles, CA 90095, USA.
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14
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Lewis PA, Cookson MR. Gene expression in the Parkinson's disease brain. Brain Res Bull 2011; 88:302-12. [PMID: 22173063 PMCID: PMC3387376 DOI: 10.1016/j.brainresbull.2011.11.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 10/18/2011] [Accepted: 11/14/2011] [Indexed: 01/01/2023]
Abstract
The study of gene expression has undergone a transformation in the past decade as the benefits of the sequencing of the human genome have made themselves felt. Increasingly, genome wide approaches are being applied to the analysis of gene expression in human disease as a route to understanding the underlying pathogenic mechanisms. In this review, we will summarise current state of gene expression studies of the brain in Parkinson's disease, and examine how these techniques can be used to gain an insight into aetiology of this devastating disorder.
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Affiliation(s)
- Patrick A Lewis
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, United Kingdom.
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