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Bocci T, Ferrara R, Albizzati T, Averna A, Guidetti M, Marceglia S, Priori A. Asymmetries of the subthalamic activity in Parkinson's disease: phase-amplitude coupling among local field potentials. Brain Commun 2024; 6:fcae201. [PMID: 38894949 PMCID: PMC11184348 DOI: 10.1093/braincomms/fcae201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 01/22/2024] [Accepted: 06/07/2024] [Indexed: 06/21/2024] Open
Abstract
The role of brain asymmetries of dopaminergic neurons in motor symptoms of Parkinson's disease is still undefined. Local field recordings from the subthalamic nucleus revealed some neurophysiological biomarkers of the disease: increased beta activity, increased low-frequency activity and high-frequency oscillations. Phase-amplitude coupling coordinates the timing of neuronal activity and allows determining the mechanism for communication within distinct regions of the brain. In this study, we discuss the use of phase-amplitude coupling to assess the differences between the two hemispheres in a cohort of 24 patients with Parkinson's disease before and after levodopa administration. Subthalamic low- (12-20 Hz) and high-beta (20-30 Hz) oscillations were compared with low- (30-45 Hz), medium- (70-100 Hz) and high-frequency (260-360 Hz) bands. We found a significant beta-phase-amplitude coupling asymmetry between left and right and an opposite-side-dependent effect of the pharmacological treatment, which is associated with the reduction of motor symptoms. In particular, high coupling between high frequencies and high-beta oscillations was found during the OFF condition (P < 0.01) and a low coupling during the ON state (P < 0.0001) when the right subthalamus was assessed; exactly the opposite happened when the left subthalamus was considered in the analysis, showing a lower coupling between high frequencies and high-beta oscillations during the OFF condition (P < 0.01), followed by a higher one during the ON state (P < 0.01). Interestingly, these asymmetries are independent of the motor onset side, either left or right. These findings have important implications for neural signals that may be used to trigger adaptive deep brain stimulation in Parkinson's and could provide more exhaustive insights into subthalamic dynamics.
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Affiliation(s)
- Tommaso Bocci
- ‘Aldo Ravelli’ Research Center for Neurotechnology and Experimental Neurotherapeutics, Department of Health Sciences, University of Milan, 20142 Milan, Italy
- III Neurology Clinic, ASST-Santi Paolo e Carlo University Hospital, 20142 Milan, Italy
| | - Rosanna Ferrara
- ‘Aldo Ravelli’ Research Center for Neurotechnology and Experimental Neurotherapeutics, Department of Health Sciences, University of Milan, 20142 Milan, Italy
| | - Tommaso Albizzati
- Department of Engineering and Architecture, University of Trieste, Trieste, 34127 Friuli-Venezia Giulia, Italy
| | - Alberto Averna
- Department of Neurology, Bern University Hospital and University of Bern, 3010 Bern, Switzerland
| | - Matteo Guidetti
- ‘Aldo Ravelli’ Research Center for Neurotechnology and Experimental Neurotherapeutics, Department of Health Sciences, University of Milan, 20142 Milan, Italy
| | - Sara Marceglia
- Department of Engineering and Architecture, University of Trieste, Trieste, 34127 Friuli-Venezia Giulia, Italy
- Newronika S.r.l., 20093 Cologno Monzese, Italy
| | - Alberto Priori
- ‘Aldo Ravelli’ Research Center for Neurotechnology and Experimental Neurotherapeutics, Department of Health Sciences, University of Milan, 20142 Milan, Italy
- III Neurology Clinic, ASST-Santi Paolo e Carlo University Hospital, 20142 Milan, Italy
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2
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Holmes AA, Matarazzo M, Mondesire‐Crump I, Katz E, Mahajan R, Arroyo‐Gallego T. Exploring Asymmetric Fine Motor Impairment Trends in Early Parkinson's Disease via Keystroke Typing. Mov Disord Clin Pract 2023; 10:1530-1535. [PMID: 37868929 PMCID: PMC10585965 DOI: 10.1002/mdc3.13864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/10/2023] [Accepted: 08/06/2023] [Indexed: 10/24/2023] Open
Abstract
Background The nQiMechPD algorithm transforms natural typing data into a numerical index that characterizes motor impairment in people with Parkinson's Disease (PwPD). Objectives Use nQiMechPD to compare asymmetrical progression of PD-related impairment in dominant (D-PD) versus non-dominant side onset (ND-PD) de-novo patients. Methods Keystroke data were collected from 53 right-handed participants (15 D-PD, 13 ND-PD, 25 controls). We apply linear mixed effects modeling to evaluate participants' right, left, and both hands nQiMechPD relative change by group. Results The 6-month nQiMechPD trajectories of right (**P = 0.002) and both (*P = 0.043) hands showed a significant difference in nQiMechPD trends between D-PD and ND-PD participants. Left side trends were not significantly different between these two groups (P = 0.328). Conclusions Significant differences between D-PD and ND-PD groups were observed, likely driven by contrasting dominant hand trends. Our findings suggest disease onset side may influence motor impairment progression, medication response, and functional outcomes in PwPD.
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Affiliation(s)
| | - Michele Matarazzo
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Fundación Hospitales de MadridHospital Universitario HM Puerta del Sur, HM HospitalesMadridSpain
| | | | | | - Rahul Mahajan
- nQ MedicalCambridgeMassachusettsUSA
- Division of Neurocritical Care, Department of NeurologyBrigham & Women's HospitalBostonMassachusettsUSA
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3
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Monte A, Magris R, Nardello F, Bombieri F, Zamparo P. Muscle shape changes in Parkinson's disease impair function during rapid contractions. Acta Physiol (Oxf) 2023; 238:e13957. [PMID: 36876976 DOI: 10.1111/apha.13957] [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: 12/05/2022] [Revised: 02/09/2023] [Accepted: 02/27/2023] [Indexed: 03/07/2023]
Abstract
AIM Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized, among the others, by muscle weakness. PD patients reach lower values of peak torque during maximal voluntary contractions but also slower rates of torque development (RTD) during explosive contractions. The aim of this study was to better understand how an impairment in structural/mechanical (peripheral) factors could explain the difficulty of PD patients to raise torque rapidly. METHODS Participants (PD patients and healthy matched controls) performed maximum voluntary explosive fixed-end contraction of the knee extensor muscles during which dynamic muscle shape changes (in muscle thickness, pennation angle, and belly gearing: the ratio between muscle belly velocity and fascicle velocity), muscle-tendon unit (MTU) stiffness and EMG activity of the vastus lateralis (VL) were investigated. Both the affected (PDA) and less affected limb (PDNA) were investigated in patients. RESULTS Control participants reached higher values of peak torque and showed a better capacity to express force rapidly compared to patients (PDA and PDNA). EMG activity was observed to differ between patients (PDA) and controls, but not between controls and PDNA. This suggests a specific neural/nervous effect on the most affected side. On the contrary, MTU stiffness and dynamic muscle shape changes were found to differ between controls and patients, but not between PDA and PDNA. Both sides are thus similarly affected by the pathology. CONCLUSION The higher MTU stiffness in PD patients is likely responsible for the impaired muscle capability to change in shape which, in turn, negatively affects the torque rise.
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Affiliation(s)
- Andrea Monte
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Riccardo Magris
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Francesca Nardello
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Federica Bombieri
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Paola Zamparo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
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4
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Deng JH, Zhang HW, Liu XL, Deng HZ, Lin F. Morphological changes in Parkinson's disease based on magnetic resonance imaging: A mini-review of subcortical structures segmentation and shape analysis. World J Psychiatry 2022; 12:1356-1366. [PMID: 36579355 PMCID: PMC9791612 DOI: 10.5498/wjp.v12.i12.1356] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/02/2022] [Accepted: 11/22/2022] [Indexed: 12/16/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder caused by the loss of dopaminergic neurons in the substantia nigra, resulting in clinical symptoms, including bradykinesia, resting tremor, rigidity, and postural instability. The pathophysiological changes in PD are inextricably linked to the subcortical structures. Shape analysis is a method for quantifying the volume or surface morphology of structures using magnetic resonance imaging. In this review, we discuss the recent advances in morphological analysis techniques for studying the subcortical structures in PD in vivo. This approach includes available pipelines for volume and shape analysis, focusing on the morphological features of volume and surface area.
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Affiliation(s)
- Jin-Huan Deng
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People’s Hospital, Shenzhen 518035, Guangdong Province, China
| | - Han-Wen Zhang
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People’s Hospital, Shenzhen 518035, Guangdong Province, China
| | - Xiao-Lei Liu
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People’s Hospital, Shenzhen 518035, Guangdong Province, China
| | - Hua-Zhen Deng
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People’s Hospital, Shenzhen 518035, Guangdong Province, China
| | - Fan Lin
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People’s Hospital, Shenzhen 518035, Guangdong Province, China
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Prenassi M, Borellini L, Bocci T, Scola E, Barbieri S, Priori A, Ferrucci R, Cogiamanian F, Locatelli M, Rampini P, Vergari M, Pastore S, Datola B, Marceglia S. Peri-lead edema and local field potential correlation in post-surgery subthalamic nucleus deep brain stimulation patients. Front Hum Neurosci 2022; 16:950434. [PMID: 36158622 PMCID: PMC9495298 DOI: 10.3389/fnhum.2022.950434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/26/2022] [Indexed: 12/01/2022] Open
Abstract
Implanting deep brain stimulation (DBS) electrodes in patients with Parkinson’s disease often results in the appearance of a non-infectious, delayed-onset edema that disappears over time. However, the time window between the DBS electrode and DBS stimulating device implant is often used to record local field potentials (LFPs) which are used both to better understand basal ganglia pathophysiology and to improve DBS therapy. In this work, we investigated whether the presence of post-surgery edema correlates with the quality of LFP recordings in eight patients with advanced Parkinson’s disease implanted with subthalamic DBS electrodes. The magnetic resonance scans of the brain after 8.5 ± 1.5 days from the implantation surgery were segmented and the peri-electrode edema volume was calculated for both brain hemispheres. We found a correlation (ρ = −0.81, p < 0.0218, Spearman’s correlation coefficient) between left side local field potentials of the low beta band (11–20 Hz) and the edema volume of the same side. No other significant differences between the hemispheres were found. Despite the limited sample size, our results suggest that the effect on LFPs may be related to the edema localization, thus indicating a mechanism involving brain networks instead of a simple change in the electrode-tissue interface.
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Affiliation(s)
- Marco Prenassi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
- Department of Engineering and Architecture, Università degli Studi di Trieste, Trieste, Italy
- *Correspondence: Marco Prenassi
| | - Linda Borellini
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Tommaso Bocci
- “Aldo Ravelli” Research Center for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, University of Milan Medical School, Milan, Italy
| | - Elisa Scola
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
- Neuroradiology Unit, Department of Radiology, Careggi University Hospital, Florence, Italy
| | - Sergio Barbieri
- Department of Engineering and Architecture, Università degli Studi di Trieste, Trieste, Italy
| | - Alberto Priori
- “Aldo Ravelli” Research Center for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, University of Milan Medical School, Milan, Italy
| | - Roberta Ferrucci
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
- “Aldo Ravelli” Research Center for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, University of Milan Medical School, Milan, Italy
| | | | - Marco Locatelli
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
- “Aldo Ravelli” Research Center for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences, University of Milan Medical School, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Paolo Rampini
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Maurizio Vergari
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Stefano Pastore
- Department of Engineering and Architecture, Università degli Studi di Trieste, Trieste, Italy
| | - Bianca Datola
- Department of Engineering and Architecture, Università degli Studi di Trieste, Trieste, Italy
| | - Sara Marceglia
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
- Department of Engineering and Architecture, Università degli Studi di Trieste, Trieste, Italy
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6
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Chen J, Jiang X, Wu J, Wu H, Zhou C, Guo T, Bai X, Liu X, Wen J, Cao Z, Gu L, Yang W, Pu J, Guan X, Xu X, Zhang B, Zhang M. Gray and white matter alterations in different predominant side and type of motor symptom in Parkinson's disease. CNS Neurosci Ther 2022; 28:1372-1379. [PMID: 35673762 PMCID: PMC9344082 DOI: 10.1111/cns.13877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/12/2022] [Accepted: 05/20/2022] [Indexed: 11/29/2022] Open
Abstract
Background Parkinson's disease (PD) is highly heterogeneous reflected by different affected side of body and type of motor symptom. We aim to explore clinical characteristics and underlying brain structure alterations in PD with different predominant sides and motor types. Methods We recruited 161 PD patients and 50 healthy controls (HC). Patients were classified into four subtypes according to their predominant side and motor type: left akinetic/rigid‐dominant (LAR), left tremor‐dominant (LTD), right akinetic/rigid‐dominant (RAR), and right tremor‐dominant (RTD). All participants assessed motor and cognitive performances, then underwent T1‐weighted and diffusion tensor imaging scanning. A general linear model was used to compare neuroimaging parameters among five groups. Results Among four PD subtypes, patients of LAR subtype experienced the worst motor impairment, and only this subtype showed worse cognitive performance compared with HC. Compared with HC and other subtypes, LAR subtype showed a significant reduction in cortical thickness of the right caudal‐anterior‐cingulate gyrus and fractional anisotropy of the right cingulum bundle. Conclusions We demonstrated that LAR subtype had the worst clinical performance, which the severer damage in the right cingulate region might be the underlying mechanism. This study underscores the importance of classifying PD subtypes based on both the side and type of motor symptom for clinical intervention and research to optimize behavioral outcomes in the future.
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Affiliation(s)
- Jingwen Chen
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Xianchen Jiang
- Quzhou Center for Disease Control and Prevention, Quzhou, China
| | - Jingjing Wu
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Haoting Wu
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Cheng Zhou
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Tao Guo
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Xueqin Bai
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Xiaocao Liu
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Jiaqi Wen
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Zhengye Cao
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Luyan Gu
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Wenyi Yang
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Jiali Pu
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Xiaojun Guan
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Xiaojun Xu
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Baorong Zhang
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
| | - Minming Zhang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou, China
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7
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Yassine S, Gschwandtner U, Auffret M, Achard S, Verin M, Fuhr P, Hassan M. Functional Brain Dysconnectivity in Parkinson's Disease: A 5-Year Longitudinal Study. Mov Disord 2022; 37:1444-1453. [PMID: 35420713 PMCID: PMC9543227 DOI: 10.1002/mds.29026] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/19/2022] [Accepted: 03/24/2022] [Indexed: 11/29/2022] Open
Abstract
Background Tracking longitudinal functional brain dysconnectivity in Parkinson's disease (PD) is a key element to decoding the underlying physiopathology and understanding PD progression. Objectives The objectives of this follow‐up study were to explore, for the first time, the longitudinal changes in the functional brain networks of PD patients over 5 years and to associate them with their cognitive performance and the lateralization of motor symptoms. Methods We used a 5‐year longitudinal cohort of PD patients (n = 35) who completed motor and non‐motor assessments and sequent resting state (RS) high‐density electroencephalography (HD‐EEG) recordings at three timepoints: baseline (BL), 3 years follow‐up (3YFU) and 5 years follow‐up (5YFU). We assessed disruptions in frequency‐dependent functional networks over the course of the disease and explored their relation to clinical symptomatology. Results In contrast with HC (n = 32), PD patients showed a gradual connectivity impairment in α2 (10‐13 Hz) and β (13–30 Hz) frequency bands. The deterioration in the global cognitive assessment was strongly correlated with the disconnected networks. These disconnected networks were also associated with the lateralization of motor symptoms, revealing a dominance of the right hemisphere in terms of impaired connections in the left‐affected PD patients in contrast to dominance of the left hemisphere in the right‐affected PD patients. Conclusions Taken together, our findings suggest that with disease progression, dysconnectivity in the brain networks in PD can reflect the deterioration of global cognitive deficits and the lateralization of motor symptoms. RS HD‐EEG may be an early biomarker of PD motor and non‐motor progression. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society
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Affiliation(s)
- Sahar Yassine
- Univ Rennes, Inserm, LTSI - U1099, Rennes, F-35000, France.,NeuroKyma, Rennes, F-35000, France
| | - Ute Gschwandtner
- Department of Neurology, Hospitals of the University of Basel, Basel, Switzerland
| | - Manon Auffret
- Comportement et noyaux gris centraux, EA 4712, CHU Rennes, Rennes, France
| | - Sophie Achard
- CNRS, Grenoble INP, GIPSA-Lab, University of Grenoble Alpes, Grenoble, France
| | - Marc Verin
- Univ Rennes, Inserm, LTSI - U1099, Rennes, F-35000, France.,Comportement et noyaux gris centraux, EA 4712, CHU Rennes, Rennes, France.,Movement Disorders Unit, Neurology Department, Pontchaillou University Hospital, Rennes, France.,Institut des Neurosciences Cliniques de Rennes (INCR), Rennes, France
| | - Peter Fuhr
- Department of Neurology, Hospitals of the University of Basel, Basel, Switzerland
| | - Mahmoud Hassan
- MINDig, Rennes, F-35000, France.,School of Science and Engineering, Reykjavik University, Reykjavik, Iceland
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8
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Prasuhn J, Göttlich M, Gerkan F, Kourou S, Ebeling B, Kasten M, Hanssen H, Klein C, Brüggemann N. Relationship between brain iron deposition and mitochondrial dysfunction in idiopathic Parkinson's disease. Mol Med 2022; 28:28. [PMID: 35246038 PMCID: PMC8895656 DOI: 10.1186/s10020-021-00426-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/16/2021] [Indexed: 12/27/2022] Open
Abstract
Background The underlying pathophysiology of Parkinson's disease is complex, involving different molecular pathways, including brain iron deposition and mitochondrial dysfunction. At a molecular level, these disease mechanisms are likely interconnected. Therefore, they offer potential strategies for disease-modifying treatments. We aimed to investigate subcortical brain iron deposition as a potential predictor of the bioenergetic status in patients with idiopathic Parkinson’s disease. Methods Thirty patients with idiopathic Parkinson's disease underwent multimodal MR imaging (T1, susceptibility-weighted imaging, SWI) and 31phosphorus magnetic resonance spectroscopy imaging. SWI contrast-to-noise ratios served as a measure for brain iron deposition in the putamen, caudate, globus pallidus, and thalamus and were used in a multiple linear regression model to predict in-vivo energy metabolite ratios. Results Subcortical brain iron deposition, particularly in the putamen and globus pallidus, was highly predictive of the region-specific amount of high-energy-containing phosphorus metabolites in our subjects. Conclusions Our study suggests that brain iron deposition but not the variability of individual volumetric measurements are highly predictive of mitochondrial impairment in vivo. These findings offer the opportunity, e.g., by using chelating therapies, to improve mitochondrial bioenergetics in patients with idiopathic Parkinson's disease. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-021-00426-9.
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Affiliation(s)
- Jannik Prasuhn
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Martin Göttlich
- Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Friederike Gerkan
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Sofia Kourou
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Britt Ebeling
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Meike Kasten
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany.,Department of Psychiatry and Psychotherapy, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Henrike Hanssen
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Norbert Brüggemann
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany. .,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany. .,Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany.
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9
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Lubben N, Ensink E, Coetzee GA, Labrie V. The enigma and implications of brain hemispheric asymmetry in neurodegenerative diseases. Brain Commun 2021; 3:fcab211. [PMID: 34557668 PMCID: PMC8454206 DOI: 10.1093/braincomms/fcab211] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/16/2021] [Accepted: 08/10/2021] [Indexed: 01/15/2023] Open
Abstract
The lateralization of the human brain may provide clues into the pathogenesis and progression of neurodegenerative diseases. Though differing in their presentation and underlying pathologies, neurodegenerative diseases are all devastating and share an intriguing theme of asymmetrical pathology and clinical symptoms. Parkinson’s disease, with its distinctive onset of motor symptoms on one side of the body, stands out in this regard, but a review of the literature reveals asymmetries in several other neurodegenerative diseases. Here, we review the lateralization of the structure and function of the healthy human brain and the common genetic and epigenetic patterns contributing to the development of asymmetry in health and disease. We specifically examine the role of asymmetry in Parkinson’s disease, Alzheimer’s disease, amyotrophic lateral sclerosis, and multiple sclerosis, and interrogate whether these imbalances may reveal meaningful clues about the origins of these diseases. We also propose several hypotheses for how lateralization may contribute to the distinctive and enigmatic features of asymmetry in neurodegenerative diseases, suggesting a role for asymmetry in the choroid plexus, neurochemistry, protein distribution, brain connectivity and the vagus nerve. Finally, we suggest how future studies may reveal novel insights into these diseases through the lens of asymmetry.
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Affiliation(s)
- Noah Lubben
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Elizabeth Ensink
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Gerhard A Coetzee
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Viviane Labrie
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
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10
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Cubo E, Martínez-Martín P, González-Bernal J, Casas E, Arnaiz S, Miranda J, Gámez P, Santos-García D. Effects of Motor Symptom Laterality on Clinical Manifestations and Quality of Life in Parkinson's Disease. JOURNAL OF PARKINSONS DISEASE 2021; 10:1611-1620. [PMID: 32741839 DOI: 10.3233/jpd-202067] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The asymmetry of motor manifestations present in Parkinson's disease (PD) suggests the existence of differences between both hemispheres. As a consequence, this asymmetry might contribute to different PD clinical phenotypes. OBJECTIVE To study the relationship between motor symptom laterality with motor, non-motor symptoms (NMS), freezing of gait (FOG), and quality of life (QoL) impairment in PD. METHODS In this cross-sectional study, we measured motor symptoms severity and complications with the Unified Parkinsons' disease Rating Scale (UPDRS), FOG with the FOG questionnaire, QoL with the 39-item PD Quality of Life Questionnaire Summary Index, and NMS with the NMS, Visual Analogue Scales for Pain and Fatigue, Beck Depression Inventory-II, Impulsive-Compulsive Disorders, and PD Sleep and Cognitive Rating scales. We defined left and right motor laterality using the UPDRS part III. We used comparative, regression, and effect size analyses to evaluate the impact of asymmetry on motor and NMS, FOG, and QoL. RESULTS 342 left (LPD) and 310 right (RPD) patients, with a mean age of 62.0±8.8 years, were included. In multivariate regression analysis, LPD was associated with a greater motor (OR = 1,50, 95% CI 1.02-2.21), FOG (OR = 1.56, 95% CI 1.01-2.41), and overall NMS impairment (OR = 1.43, 95% CI 1.001-2.06), and better QoL (OR = 0.52 95% CI 0.32-0.85). Overall, only a mild effect size was found for all comparisons in which significant differences were present. CONCLUSION In this large multicenter study, motor symptom laterality seems to carry a mild but significant impact on PD clinical manifestations, and QoL.
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Affiliation(s)
- Esther Cubo
- Department of Neurology, Hospital Universitario Burgos, Burgos, Spain
| | - Pablo Martínez-Martín
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain.,Centro Nacional de Epidemiología, Instituto de Salud Carlos III, Madrid, Spain
| | | | - Elena Casas
- Department of Neurology, Hospital Universitario Burgos, Burgos, Spain
| | - Sandra Arnaiz
- Department of Neurology, Hospital Universitario Burgos, Burgos, Spain
| | - Javier Miranda
- Department of Neurology, Hospital Universitario Burgos, Burgos, Spain
| | - Pedro Gámez
- Department of Neurology, Hospital Universitario Burgos, Burgos, Spain
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11
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Shen T, Yue Y, Zhao S, Xie J, Chen Y, Tian J, Lv W, Lo CYZ, Hsu YC, Kober T, Zhang B, Lai HY. The role of brain perivascular space burden in early-stage Parkinson's disease. NPJ Parkinsons Dis 2021; 7:12. [PMID: 33547311 PMCID: PMC7864928 DOI: 10.1038/s41531-021-00155-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/22/2020] [Indexed: 01/30/2023] Open
Abstract
Perivascular space (PVS) is associated with neurodegenerative diseases, while its effect on Parkinson's disease (PD) remains unclear. We aimed to investigate the clinical and neuroimaging significance of PVS in basal ganglia (BG) and midbrain in early-stage PD. We recruited 40 early-stage PD patients and 41 healthy controls (HCs). Both PVS number and volume were calculated to evaluate PVS burden on 7 T magnetic resonance imaging images. We compared PVS burden between PD and HC, and conducted partial correlation analysis between PVS burden and clinical and imaging features. PD patients had a significantly more serious PVS burden in BG and midbrain, and the PVS number in BG was significantly correlated to the PD disease severity and L-dopa equivalent dosage. The fractional anisotropy and mean diffusivity values of certain subcortical nuclei and white matter fibers within or nearby the BG and midbrain were significantly correlated with the ipsilateral PVS burden indexes. Regarding to the midbrain, the difference between bilateral PVS burden was, respectively, correlated to the difference between fiber counts of white fiber tract passing through bilateral substantia nigra in PD. Our study suggests that PVS burden indexes in BG are candidate biomarkers to evaluate PD motor symptom severity and aid in predicting medication dosage. And our findings also highlight the potential correlations between PVS burden and both grey and white matter microstructures.
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Affiliation(s)
- Ting Shen
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Key Laboratory of Medical Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China ,grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China ,grid.13402.340000 0004 1759 700XCollege of Biomedical Engineering and Instrument Science, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China
| | - Yumei Yue
- grid.13402.340000 0004 1759 700XDepartment of Neurology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Shuai Zhao
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Juanjuan Xie
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Key Laboratory of Medical Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China ,grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Yanxing Chen
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Jun Tian
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Wen Lv
- grid.13402.340000 0004 1759 700XDepartment of Neurology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Chun-Yi Zac Lo
- grid.8547.e0000 0001 0125 2443Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Yi-Cheng Hsu
- grid.452598.7MR collaboration NE Asia, Siemens Healthcare, Shanghai, China
| | - Tobias Kober
- Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland
| | - Baorong Zhang
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Hsin-Yi Lai
- grid.13402.340000 0004 1759 700XDepartment of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Key Laboratory of Medical Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China ,grid.13402.340000 0004 1759 700XCollege of Biomedical Engineering and Instrument Science, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China ,grid.13402.340000 0004 1759 700XDepartment of Neurology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
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12
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Proud E, Morris ME, Bilney B, Miller KJ, Nijkrake MJ, Munneke M, McGinley JL. Hand dexterity assessment in Parkinson's disease: construct validity of the 9-Hole peg test for the more affected hand. Disabil Rehabil 2020; 43:3834-3838. [PMID: 32343614 DOI: 10.1080/09638288.2020.1754474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Purpose: There is limited understanding of the characteristics and evaluation of more affected hand dexterity loss in Parkinson's disease. We described 9-Hole Peg Test performance for the more affected hand and examined the construct validity of these pegboard scores in mild to severe Parkinson's disease. Methods: This observational study analysed baseline data from a cluster-randomised controlled trial.Participants (n = 582) completed the pegboard with their more affected hand, the Patient-Specific Index-Parkinson's Disease and Self-assessment Parkinson's Disease Disability Scale. Mean pegboard performance was summarised at each disease stage. To investigate known groups validity, we explored differences in pegboard scores between participants identifying upper limb problems in their 'top three' functional limitations, and those prioritising other limitations. Convergent validity investigated correlations between pegboard performance and self-reported hand function.Results: Pegboard performance was reduced compared with normative values, and problems with hand activities were reported at each disease stage. Significant differences in pegboard performance between the two functional limitation priority groups (p < 0.05), and moderate correlations between pegboard dexterity and hand function (Self-assessment Parkinson's Disease Disability Scale) provided evidence for construct validity.Conclusions: People with mild to severely disabling Parkinson's disease have reduced dexterity and problems with hand function. Evidence supported the construct validity of 9-Hole Peg Test more affected hand performance.IMPLICATIONS FOR REHABILITATIONPeople with mild to severely disabling PD experience dexterity loss and problems with hand function.It is important for clinicians to assess dexterity and hand function in people with this movement disorder.Evidence supports the construct validity of 9-Hole Peg Test for measuring more affected hand performance in Parkinson's disease.
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Affiliation(s)
- Elizabeth Proud
- Department of Physiotherapy, The University of Melbourne, Melbourne, VIC, Australia
| | - Meg E Morris
- Department of Physiotherapy, La Trobe University, Melbourne, VIC, Australia.,Healthscope Ltd, Melbourne, VIC, Australia
| | - Belinda Bilney
- School of Allied Health, Australian Catholic University-Ballarat Campus, Ballarat, VIC, Australia
| | - Kimberly J Miller
- Department of Physiotherapy, The University of Melbourne, Melbourne, VIC, Australia.,Sunny Hill Health Centre for Children, Vancouver, BC, Canada
| | - Maarten J Nijkrake
- Cognition and Behaviour, Radboud University, Donders Institiute for Brain, Nijmegen, The Netherlands
| | - Marten Munneke
- Cognition and Behaviour, Radboud University, Donders Institiute for Brain, Nijmegen, The Netherlands
| | - Jennifer L McGinley
- Department of Physiotherapy, The University of Melbourne, Melbourne, VIC, Australia
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13
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Ortelli P, Ferrazzoli D, Zarucchi M, Maestri R, Frazzitta G. Asymmetric Dopaminergic Degeneration and Attentional Resources in Parkinson's Disease. Front Neurosci 2018; 12:972. [PMID: 30618591 PMCID: PMC6304447 DOI: 10.3389/fnins.2018.00972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 12/04/2018] [Indexed: 12/24/2022] Open
Abstract
Background: Attention is crucial to voluntary perform actions in Parkinson's disease (PD), allowing patients to bypass the impaired habitual motor control. The asymmetrical degeneration of the dopaminergic system could affect the attentional functions. Objective: To investigate the relationship between the asymmetric dopaminergic degeneration and the attentional resources in Parkinsonian patients with right-side (RPD) and left-side (LPD) motor symptoms predominance. Methods: 50 RPD, 50 LPD, and 34 healthy controls underwent visual (V), auditory (A), and multiple choices (MC) reaction time (RTs) tasks. For PD patients, these tasks were performed before and after a 4-week intensive, motor-cognitive rehabilitation treatment (MIRT). The effectiveness of treatment was evaluated assessing Unified Parkinson's disease Rating Scale (UPDRS) III and Timed-up and Go Test (TUG). Results: RTs did not differ between PD patients and healthy controls. Before MIRT, no differences between LPD and RPD patients were observed in RTs (p = 0.20), UPDRS III (p = 0.60), and TUG (p = 0.38). No differences in dopaminergic medication were found between groups (p = 0.44 and p = 0.66 before and after MIRT, respectively). After MIRT, LPD patients showed a significant reduction in MC RTs (p = 0.05), V RTs (p = 0.02), and MC-V RTs. A significant association between changes in RTs and improvements in UPDRS III and TUG was observed in LPD patients. Conclusion: attention does not differ among RPD patients, LPD patients and healthy controls. Only LPD patients improved their performances on attentional tasks after MIRT. We argue that the increased early susceptibility of the left nigrostriatal system to degeneration affects differently the cognitive modifiability and the neuroplastic potential. Our results could provide insight into new therapeutic approaches, highlighting the importance to design different treatments for RPD patients and LPD patients.
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Affiliation(s)
- Paola Ortelli
- Department of Parkinson's Disease, Movement Disorders and Brain Injury Rehabilitation, Moriggia-Pelascini Hospital, Como, Italy
| | - Davide Ferrazzoli
- Department of Parkinson's Disease, Movement Disorders and Brain Injury Rehabilitation, Moriggia-Pelascini Hospital, Como, Italy
| | - Marianna Zarucchi
- Department of Parkinson's Disease, Movement Disorders and Brain Injury Rehabilitation, Moriggia-Pelascini Hospital, Como, Italy
| | - Roberto Maestri
- Istituti Clinici Scientifici Maugeri - Istituto di Ricovero e Cura a Carattere Scientifico, Biomedical Engineering Unit of Montescano Institute, Pavia, Italy
| | - Giuseppe Frazzitta
- Department of Parkinson's Disease, Movement Disorders and Brain Injury Rehabilitation, Moriggia-Pelascini Hospital, Como, Italy
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14
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Bay AA, Hart AR, Michael Caudle W, Corcos DM, Hackney ME. The association between Parkinson's disease symptom side-of-onset and performance on the MDS-UPDRS scale part IV: Motor complications. J Neurol Sci 2018; 396:262-265. [PMID: 30537631 DOI: 10.1016/j.jns.2018.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/18/2018] [Accepted: 12/03/2018] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Parkinson's disease (PD) is a neurodegenerative condition associated with aging characterized by loss of dopamine-producing neurons in the substantia nigra pars compacta and a reduction in dopamine levels in the striatum. PD is commonly treated using dopamine-replacement medication called levodopa. Levodopa has decreasing efficacy over time. Periods when levodopa is not effective at controlling symptoms of PD are called "OFF-time" or "medication-related motor fluctuations," (MRMF). One characteristic of PD is unilateral side of symptom onset. Previous studies have found that side of onset was associated with differential motor and cognitive PD-related symptoms. The main study objective was to examine differences in left and right onset PD patients and OFF-time as measured by the Movement Disorders Society Unified Parkinson Disease Rating Scale (MDS-UPDRS) Part IV Sum Score and Part IV item scores. METHODS 64 individuals with mild-moderate PD (age: M(SD) = 68.72 (8.88)), years with PD: M(SD) = 6.61 (5.05); Hoehn and Yahr stage Med (1st, 3rd quartile) = 2.0 (2.0, 3.0) were assessed with the MDS-UPDRS parts I-IV. We conducted two-tailed independent sample t-tests to examine the differences between PD patients with left versus right onset. RESULTS Right onset PD was significantly associated with more overall MRMF (p = 0.01), more OFF-time (p = 0.04), greater impact of motor fluctuations on daily life (p = 0.02) and more complex (unpredictable) MRMF (p = 0.01). CONCLUSION People with right onset PD have more complications with levodopa treatment. Alternative and/or adjuvant treatments to levodopa may be particularly beneficial for those with right onset PD.
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Affiliation(s)
- Allison A Bay
- Division of General Medicine and Geriatrics, Department of Medicine, Emory School of Medicine, 1648 Pierce Dr. NE, Atlanta, GA 30307, USA
| | - Ariel R Hart
- Division of General Medicine and Geriatrics, Department of Medicine, Emory School of Medicine, 1648 Pierce Dr. NE, Atlanta, GA 30307, USA
| | - W Michael Caudle
- Department of Environmental Health, Emory University Rollins School of Public Health, 1518 Clifton Rd., Atlanta, GA 30322, USA
| | - Daniel M Corcos
- Physical Therapy and Human Movement Science, Northwestern University, 633 Clark St., Evanston, IL 60208, USA
| | - Madeleine E Hackney
- Division of General Medicine and Geriatrics, Department of Medicine, Emory School of Medicine, 1648 Pierce Dr. NE, Atlanta, GA 30307, USA; Atlanta VA Center for Visual and Neurocognitive Rehabilitation, 1670 Clairmont Rd., Decatur, GA 30033, USA; Department of Rehabilitation Medicine, Emory School of Medicine, 1648 Pierce Dr. NE, Atlanta, GA 30307, USA.
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15
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Smith SK, Gosrani SP, Lee CA, McCarty GS, Sombers LA. Carbon-Fiber Microbiosensor for Monitoring Rapid Lactate Fluctuations in Brain Tissue Using Fast-Scan Cyclic Voltammetry. Anal Chem 2018; 90:12994-12999. [DOI: 10.1021/acs.analchem.8b03694] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Samantha K. Smith
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Saahj P. Gosrani
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Christie A. Lee
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Gregory S. McCarty
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Leslie A. Sombers
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
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16
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Lewis MM, Sterling NW, Du G, Lee EY, Shyu G, Goldenberg M, Allen T, Stetter C, Kong L, Snipes SA, Jones BC, Chen H, Mailman RB, Huang X. Lateralized Basal Ganglia Vulnerability to Pesticide Exposure in Asymptomatic Agricultural Workers. Toxicol Sci 2017; 159:170-178. [PMID: 28633499 PMCID: PMC5837257 DOI: 10.1093/toxsci/kfx126] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Pesticide exposure is linked to Parkinson's disease, a neurodegenerative disorder marked by dopamine cell loss in the substantia nigra of the basal ganglia (BG) that often presents asymmetrically. We previously reported that pesticide-exposed agricultural workers (AW) have nigral diffusion tensor imaging (DTI) changes. The current study sought to confirm this finding, and explore its hemisphere and regional specificity within BG structures using an independent sample population. Pesticide exposure history, standard neurological exam, high-resolution magnetic resonance imaging (T1/T2-weighted and DTI), and [123I]ioflupane SPECT images (to quantify striatal dopamine transporters) were obtained from 20 AW with chronic pesticide exposure and 11 controls. Based on median cumulative days of pesticide exposure, AW were subdivided into high (AWHi, n = 10) and low (AWLo, n = 10) exposure groups. BG (nigra, putamen, caudate, and globus pallidus [GP]) fractional anisotropy (FA), mean diffusivity (MD), and striatal [123I]ioflupane binding in each hemisphere were quantified, and compared across exposure groups using analysis of variance. Left, but not right, nigral and GP FA were significantly lower in AW compared with controls (p's < .029). None of the striatal (putamen and caudate) DTI or [123I]ioflupane binding measurements differed between AW and controls. Subgroup analyses indicated that significant left nigral and GP DTI changes were present only in the AWHi (p ≤ .037) but not the AWLo subgroup. AW, especially those with higher pesticide exposure history, demonstrate lateralized microstructural changes in the nigra and GP, whereas striatal areas appear relatively unaffected. Future studies should elucidate how environmental toxicants cause differential lateralized- and regionally specific brain vulnerability.
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Affiliation(s)
| | | | | | | | | | | | - Thomas Allen
- Department of Radiology, and Department of Public Health Sciences, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033
| | - Christy Stetter
- Department of Radiology, and Department of Public Health Sciences, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033
| | - Lan Kong
- Department of Radiology, and Department of Public Health Sciences, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033
| | - Shedra Amy Snipes
- Department of Biobehavioral Health, Pennsylvania State University University Park, Pennsylvania 16802
| | - Byron C Jones
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, Tennessee 38163
| | - Honglei Chen
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, Michigan 48824
| | | | - Xuemei Huang
- Department of Neurology
- Department of Pharmacology
- Department of Radiology, and Department of Public Health Sciences, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033
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17
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Smith SK, Lee CA, Dausch ME, Horman BM, Patisaul HB, McCarty GS, Sombers LA. Simultaneous Voltammetric Measurements of Glucose and Dopamine Demonstrate the Coupling of Glucose Availability with Increased Metabolic Demand in the Rat Striatum. ACS Chem Neurosci 2017; 8:272-280. [PMID: 27984698 DOI: 10.1021/acschemneuro.6b00363] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cerebral blood flow ensures delivery of nutrients, such as glucose, to brain sites with increased metabolic demand. However, little is known about rapid glucose dynamics at discrete locations during neuronal activation in vivo. Acute exposure to many substances of abuse elicits dopamine release and neuronal activation in the striatum; however, the concomitant changes in striatal glucose remain largely unknown. Recent developments have combined fast-scan cyclic voltammetry with glucose oxidase enzyme modified carbon-fiber microelectrodes to enable the measurement of glucose dynamics with subsecond temporal resolution in the mammalian brain. This work evaluates several waveforms to enable the first simultaneous detection of endogenous glucose and dopamine at single recording sites. These molecules, one electroactive and one nonelectroactive, were found to fluctuate in the dorsal striatum in response to electrical stimulation of the midbrain and systemic infusion of cocaine/raclopride. The data reveal the second-by-second dynamics of these species in a striatal microenvironment, and directly demonstrate the coupling of glucose availability with increased metabolic demand. This work provides a foundation that will enable detailed investigation of local mechanisms that regulate the coupling of cerebral blood flow with metabolic demand under normal conditions, and in animal studies of drug abuse and addiction.
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Affiliation(s)
- Samantha K. Smith
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Christie A. Lee
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Matthew E. Dausch
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Brian M. Horman
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Heather B. Patisaul
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Gregory S. McCarty
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Leslie A. Sombers
- Department
of Chemistry, ‡Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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18
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The cortical signature of symptom laterality in Parkinson's disease. NEUROIMAGE-CLINICAL 2017; 14:433-440. [PMID: 28271041 PMCID: PMC5322212 DOI: 10.1016/j.nicl.2017.02.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 01/23/2017] [Accepted: 02/11/2017] [Indexed: 01/16/2023]
Abstract
Patients with Parkinson's disease (PD) often present with unilateral motor symptoms that eventually spread to the other side. This symptom lateralization is diagnostically important, as it serves to distinguish PD from other motor disorders with overlapping symptom profiles. Further, recent studies have shown that the side of symptom onset is important for prognosis, as there are differences in the rate of disease progression and the incidence of secondary symptoms between right- and left-dominant (RD, LD) patients. Physiologically, previous studies have shown asymmetrical decline in structure and metabolism throughout the basal ganglia, although connecting this directly to motor function has been difficult. To identify the neurophysiological basis of symptom laterality in PD, we recorded magnetoencephalography (MEG) during left- and right-hand movement paradigms in patients with PD who exhibited either RD or LD symptomatology. The beta oscillations serving these movements were then imaged using beamforming methods, and we extracted the time series of the peak voxel in the left and right primary motor cortices for each movement. In addition, each patient's symptom asymmetry was quantitated using the Unified Parkinson's Disease Rating Scale (UPDRS), which allowed the relationship between symptom asymmetry and neural asymmetry to be assessed. We found that LD patients had stronger beta suppression during movement, as well as greater post-movement beta rebound compared to patients with RD symptoms, independent of the hand that was moved. Interestingly, the asymmetry of beta activity during right-hand movement uniquely correlated with symptom asymmetry, such that the more LD the symptom profile, the more left-lateralized (i.e., contralateral to movement) the beta response; conversely, the more RD the symptom profile, the more right-lateralized (i.e., ipsilateral to movement) the beta response. This study is the first to directly probe the relationship between symptom asymmetry and the laterality of neural activity during movement in patients with PD, and suggests that LD patients have a fundamentally different and more “healthy” oscillatory pattern relative to RD patients. Right-dominant expression of Parkinson's has been connected to faster progression. Linkage between symptom asymmetry and cortical physiology remains unknown. Cortical motor activity was measured in patients with left/right-dominant symptoms. Patients with left-dominant symptoms had “healthier” pattern of motor responses. Laterality of cortical activity during movement was related to symptom laterality.
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Khlebtovsky A, Djaldetti R, Rodity Y, Keret O, Tsvetov G, Slutzcki-Shraga I, Benninger F. Progression of postural changes in Parkinson’s disease: quantitative assessment. J Neurol 2017; 264:675-683. [DOI: 10.1007/s00415-017-8402-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/18/2017] [Accepted: 01/20/2017] [Indexed: 12/11/2022]
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20
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Pan P, Zhan H, Xia M, Zhang Y, Guan D, Xu Y. Aberrant regional homogeneity in Parkinson's disease: A voxel-wise meta-analysis of resting-state functional magnetic resonance imaging studies. Neurosci Biobehav Rev 2016; 72:223-231. [PMID: 27916710 DOI: 10.1016/j.neubiorev.2016.11.018] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 11/07/2016] [Accepted: 11/21/2016] [Indexed: 12/14/2022]
Abstract
Studies of abnormal regional homogeneity (ReHo) in Parkinson's disease (PD) have reported inconsistent results. Therefore, we conducted a meta-analysis using the Seed-based d Mapping software package to identify the most consistent and replicable findings. A systematic literature search was performed to identify eligible whole-brain resting-state functional magnetic resonance imaging studies that had measured differences in ReHo between patients with PD and healthy controls between January 2000 and June 4, 2016. A total of ten studies reporting 11 comparisons (212 patients; 182 controls) were included. Increased ReHo was consistently identified in the bilateral inferior parietal lobules, bilateral medial prefrontal cortices, and left cerebellum of patients with PD when compared to healthy controls, while decreased ReHo was observed in the right putamen, right precentral gyrus, and left lingual gyrus. The results of the current meta-analysis demonstrate a consistent and coexistent pattern of impairment and compensation of intrinsic brain activity that predominantly involves the default mode and motor networks, which may advance our understanding of the pathophysiological mechanisms underlying PD.
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Affiliation(s)
- PingLei Pan
- Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, PR China; Department of Neurology, The Affiliated Yancheng Hospital, School of Medicine, Southeast University, Yancheng, PR China
| | - Hui Zhan
- Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, PR China
| | - MingXu Xia
- Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, PR China
| | - Yang Zhang
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - DeNing Guan
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, PR China; Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, PR China; The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, PR China; Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, Jiangsu, PR China; Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, PR China; Nanjing Neuropsychiatry Clinic Medical Center, Nanjing, PR China.
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Karim AKMR, Proulx MJ, Likova LT. Anticlockwise or clockwise? A dynamic Perception-Action-Laterality model for directionality bias in visuospatial functioning. Neurosci Biobehav Rev 2016; 68:669-693. [PMID: 27350096 DOI: 10.1016/j.neubiorev.2016.06.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 06/18/2016] [Accepted: 06/22/2016] [Indexed: 02/03/2023]
Abstract
Orientation bias and directionality bias are two fundamental functional characteristics of the visual system. Reviewing the relevant literature in visual psychophysics and visual neuroscience we propose here a three-stage model of directionality bias in visuospatial functioning. We call this model the 'Perception-Action-Laterality' (PAL) hypothesis. We analyzed the research findings for a wide range of visuospatial tasks, showing that there are two major directionality trends in perceptual preference: clockwise versus anticlockwise. It appears these preferences are combinatorial, such that a majority of people fall in the first category demonstrating a preference for stimuli/objects arranged from left-to-right rather than from right-to-left, while people in the second category show an opposite trend. These perceptual biases can guide sensorimotor integration and action, creating two corresponding turner groups in the population. In support of PAL, we propose another model explaining the origins of the biases - how the neurogenetic factors and the cultural factors interact in a biased competition framework to determine the direction and extent of biases. This dynamic model can explain not only the two major categories of biases in terms of direction and strength, but also the unbiased, unreliably biased or mildly biased cases in visuosptial functioning.
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Affiliation(s)
- A K M Rezaul Karim
- Envision Research Institute, 610 N. Main St, Wichita, KS 67203, USA; The Smith-Kettlewell Eye Research Institute, 2318 Fillmore St, San Francisco, CA 94115, USA; Department of Psychology, University of Dhaka, Dhaka 1000, Bangladesh.
| | - Michael J Proulx
- Department of Psychology, University of Bath, Bath, BA2 7AY, UK.
| | - Lora T Likova
- The Smith-Kettlewell Eye Research Institute, 2318 Fillmore St, San Francisco, CA 94115, USA.
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Lahr J, Pereira MP, Pelicioni PHS, De Morais LC, Gobbi LTB. PARKINSON'S DISEASE PATIENTS WITH DOMINANT HEMIBODY AFFECTED BY THE DISEASE RELY MORE ON VISION TO MAINTAIN UPRIGHT POSTURAL CONTROL. Percept Mot Skills 2015; 121:923-34. [PMID: 26654986 DOI: 10.2466/15.pms.121c26x0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study assesses the association between disease onset side (dominant or non-dominant) and vision on postural control of Parkinson's disease patients. Patient volunteers composed two groups, according to the onset side affected: Dominant group (n=9; M age=66.1 yr., SD=7.2; 6 women, 3 men) and Non-dominant group (n=9; M age=67.4 yr., SD=6.4; 6 women, 3 men). The groups' postural control was assessed by posturography during quiet upright stance in two conditions, Eyes open and Eyes closed. Two-way analyses of variance (ANOVAs; group×condition) with repeated measures for the second factor assessed the differences associated with affected hemibody and vision on postural control. Analyses indicated that patients with the dominant side affected also presented significantly greater variation in center of pressure than those with the non-dominant side affected, mainly in the Eyes closed condition. The results demonstrate a higher reliance on vision in the dominant side, possibly to compensate somatosensory system impairments. These results also highlight the importance of analyzing the hemibody affected by the disease when postural control is assessed in this population.
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Marin C, Bonastre M, Mengod G, Cortés R, Rodríguez-Oroz M. From unilateral to bilateral parkinsonism: Effects of lateralization on dyskinesias and associated molecular mechanisms. Neuropharmacology 2015; 97:365-75. [DOI: 10.1016/j.neuropharm.2015.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/02/2015] [Accepted: 06/09/2015] [Indexed: 01/15/2023]
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Pelosi A, Girault JA, Hervé D. Unilateral Lesion of Dopamine Neurons Induces Grooming Asymmetry in the Mouse. PLoS One 2015; 10:e0137185. [PMID: 26397369 PMCID: PMC4580614 DOI: 10.1371/journal.pone.0137185] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 08/13/2015] [Indexed: 12/04/2022] Open
Abstract
Grooming behaviour is the most common innate behaviour in animals. In rodents, it consists of sequences of movements organized in four phases, executed symmetrically on both sides of the animal and creating a syntactic chain of behavioural events. The grooming syntax can be altered by stress and novelty, as well as by several mutations and brain lesions. Grooming behaviour is known to be affected by alterations of the dopamine system, including dopamine receptor modulation, dopamine alteration in genetically modified animals, and after brain lesion. While a lot is known about the initiation and syntactic modifications of this refined sequence of movements, effects of unilateral lesion of dopamine neurons are unclear particularly regarding the symmetry of syntactic chains. In the present work we studied grooming in mice unilaterally lesioned in the medial forebrain bundle by 6-hydroxydopamine. We found a reduction in completion of grooming bouts, associated with reduction in number of transitions between grooming phases. The data also revealed the development of asymmetry in grooming behaviour, with reduced tendency to groom the contralateral side to the lesion. Symmetry was recovered following treatment with L-DOPA. Thus, the present work shows that unilateral lesion of dopamine neurons reduces self-grooming behaviour by affecting duration and numbers of events. It produces premature discontinuation of grooming chains but the sequence syntax remains correct. This deficient grooming could be considered as an intrinsic symptom of Parkinson’s disease in animal models and could present some similarities with abnormalities of motor movement sequencing seen in patients. Our study also suggests grooming analysis as an additional method to screen parkinsonism in animal models.
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Affiliation(s)
- Assunta Pelosi
- Inserm UMR-S 839, 75005, Paris, France
- Institut du Fer à Moulin, 75005, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC, Paris-6), Paris, France
- * E-mail: (AP); (DH)
| | - Jean-Antoine Girault
- Inserm UMR-S 839, 75005, Paris, France
- Institut du Fer à Moulin, 75005, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC, Paris-6), Paris, France
| | - Denis Hervé
- Inserm UMR-S 839, 75005, Paris, France
- Institut du Fer à Moulin, 75005, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC, Paris-6), Paris, France
- * E-mail: (AP); (DH)
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Paradoxical effect of dopamine medication on cognition in Parkinson's disease: relationship to side of motor onset. J Int Neuropsychol Soc 2015; 21:259-70. [PMID: 25923830 PMCID: PMC4493897 DOI: 10.1017/s1355617715000181] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Parkinson's disease (PD) is characterized by asymmetric motor symptom onset attributed to greater degeneration of dopamine neurons contralateral to the affected side. However, whether motor asymmetries predict cognitive profiles in PD, and to what extent dopamine influences cognition remains controversial. This study evaluated cognitive variability in PD by measuring differential response to dopamine replacement therapy (DRT) based on hemispheric asymmetries. The influence of DRT on cognition was evaluated in mild PD patients (n = 36) with left or right motor onset symptoms. All subjects were evaluated on neuropsychological measures on and off DRT and compared to controls (n = 42). PD patients were impaired in executive, memory and motor domains irrespective of side of motor onset, although patients with left hemisphere deficit displayed greater cognitive impairment. Patients with right hemisphere deficit responded to DRT with significant improvement in sensorimotor deficits, and with corresponding improvement in attention and verbal memory functions. Conversely, patients with greater left hemisphere dopamine deficiency did not improve in attentional functions and declined in verbal memory recall following DRT. These findings support the presence of extensive mild cognitive deficits in early PD not fully explained by dopamine depletion alone. The paradoxical effects of levodopa on verbal memory were predicted by extent of fine motor impairment and sensorimotor response to levodopa, which reflects extent of dopamine depletion. The findings are discussed with respect to factors influencing variable cognitive profiles in early PD, including hemispheric asymmetries and differential response to levodopa based on dopamine levels predicting amelioration or overdosing.
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Pedrosa DJ, Kahraman D, Schmidt M, Drzezga A, Timmermann L, Eggers C. Parkinson's disease with a predominant right-sided putaminal FP-CIT SPECT deficiency shows stronger decline of asymmetry over time. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.baga.2014.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ellmore TM, Castriotta RJ, Hendley KL, Aalbers BM, Furr-Stimming E, Hood AJ, Suescun J, Beurlot MR, Hendley RT, Schiess MC. Altered nigrostriatal and nigrocortical functional connectivity in rapid eye movement sleep behavior disorder. Sleep 2013; 36:1885-92. [PMID: 24293763 DOI: 10.5665/sleep.3222] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Rapid eye movement sleep behavior disorder (RBD) is a condition closely associated with Parkinson disease (PD). RBD is a sleep disturbance that frequently manifests early in the development of PD, likely reflecting disruption in normal functioning of anatomical areas affected by neurodegenerative processes. Although specific neuropathological aspects shared by RBD and PD have yet to be fully documented, further characterization is critical to discovering reliable biomarkers that predict PD onset. In the current study, we tested the hypothesis of altered functional connections of the substantia nigra (SN) in patients in whom RBD was diagnosed. DESIGN Between-groups, single time point imaging. SETTING UTHSC-H 3 telsa MRI center. PARTICIPANTS Ten patients with RBD, 11 patients with PD, and 10 age-matched controls. INTERVENTIONS NA. MEASUREMENTS AND RESULTS We measured correlations of SN time series using resting state blood oxygen level-dependent functional magnetic resonance imaging (BOLD-fMRI) in patients with idiopathic RBD who were at risk for developing PD, patients in whom PD was diagnosed, and age-matched controls. Using voxelwise analysis of variance, different correlations (P < 0.01, whole-brain corrected) between left SN and left putamen were found in patients with RBD compared with controls and patients with PD. SN correlations with right cuneus/precuneus and superior occipital gyrus were significantly different for patients with RBD compared with both controls and patients with PD. CONCLUSIONS The results suggest that altered nigrostriatal and nigrocortical connectivity characterizes rapid eye movement sleep behavior disorder before onset of obvious motor impairment. The functional changes are discussed in the context of degeneration in dopaminergic and cognition-related networks.
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Affiliation(s)
- Timothy M Ellmore
- Department of Psychology and Program in Behavioral and Cognitive Neuroscience, The City College and Graduate Center of the City University of New York, New York, NY
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Menke RAL, Szewczyk-Krolikowski K, Jbabdi S, Jenkinson M, Talbot K, Mackay CE, Hu M. Comprehensive morphometry of subcortical grey matter structures in early-stage Parkinson's disease. Hum Brain Mapp 2013; 35:1681-90. [PMID: 23861334 DOI: 10.1002/hbm.22282] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 01/01/2013] [Accepted: 02/13/2013] [Indexed: 12/16/2022] Open
Abstract
Previous imaging studies that investigated morphometric group differences of subcortical regions outside the substantia nigra between non-demented Parkinson's patients and controls either did not find any significant differences, or reported contradictory results. Here, we performed a comprehensive morphometric analysis of 20 cognitively normal, early-stage PD patients and 19 matched control subjects. In addition to relatively standard analyses of whole-brain grey matter volume and overall regional volumes, we examined subtle localized surface shape differences in striatal and limbic grey matter structures and tested their utility as a diagnostic marker. Voxel-based morphometry and volumetric comparisons did not reveal significant group differences. Shape analysis, on the other hand, demonstrated significant between-group shape differences for the right pallidum. Careful diffusion tractography analysis showed that the affected parts of the pallidum are connected subcortically with the subthalamic nucleus, the pedunculopontine nucleus, and the thalamus and cortically with the frontal lobe. Additionally, microstructural measurements along these pathways, but not along other pallidal connections, were significantly different between the two groups. Vertex-wise linear discriminant analysis, however, revealed limited accuracy of pallidal shape for the discrimination between patients and controls. We conclude that localized disease-related changes in the right pallidum in early Parkinson's disease, undetectable using standard voxel-based morphometry or volumetry, are evident using sensitive shape analysis. However, the subtle nature of these changes makes it unlikely that shape analysis alone will be useful for early diagnosis.
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Affiliation(s)
- Ricarda A L Menke
- FMRIB Centre, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom; Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, United Kingdom; Oxford Parkinson's Disease Centre (OPDC), University of Oxford, Oxford, United Kingdom
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Harris E, McNamara P, Durso R. Apathy in patients with Parkinson disease as a function of side of onset. J Geriatr Psychiatry Neurol 2013; 26:95-104. [PMID: 23584852 DOI: 10.1177/0891988713481267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND In previous studies among patients with Parkinson disease (PD) who were administered the Apathy Evaluation Scale (AES), between 12% and 51% evidenced clinically significant apathy. Although apathy is a risk factor for dementia, its causes and clinical correlates have not been adequately studied. In particular, side of onset of disease, though a likely predictor of apathy and dementia, has not been thoroughly investigated. METHODS A total of 30 mid-stage patients with PD and 35 community-dwelling elderly control patients (CPs) were administered the AES (self version) along with a battery of cognitive and neuropsychiatric assessments. Persons close to patients with PD and CPs completed the AES--other (informant) version about the patient or CP. Multiple linear regression analysis examined predictors of apathy severity after controlling for mood, levodopa dosage equivalents (LDEs), gender, age, and disease severity (Hoehn--Yahr [H-Y] stage). RESULTS Patients with right-onset disease more frequently exhibited apathy and evidenced significantly higher total AES scores than left-onset patients with PD or CPs (P < .03). Of all the patients, 42% with right-onset PD versus 11.1% of the patients with left-onset PD exhibited clinically significant levels of apathy. There were no differences for self versus informant scores for right-onset patients with PD. The AES scores were not correlated with depression, stress, anxiety, LDEs, gender, age, and H-Y stage. There were no gender differences for any AES variables. CONCLUSION Clinically significant levels of apathy are much more likely to occur in patients with right-onset disease. These patients may be at greater risk of PD-related dementia.
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Affiliation(s)
- Erica Harris
- Department of Behavioral Sciences and Epidemiology, Naval Health Research Center, San Diego, CA 92106, USA.
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Erro R, Santangelo G, Picillo M, Vitale C, Amboni M, Longo K, Giordano F, Moccia M, Barone P, Pellecchia MT. Side of onset does not influence cognition in newly diagnosed untreated Parkinson's disease patients. Parkinsonism Relat Disord 2013. [DOI: 10.1016/j.parkreldis.2012.10.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shi J, Liu J, Qu Q. Handedness and dominant side of symptoms in Parkinson's disease. Med Clin (Barc) 2013; 142:141-4. [PMID: 23352124 DOI: 10.1016/j.medcli.2012.11.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 11/14/2012] [Accepted: 11/15/2012] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVE To investigate the association between handedness and the side of symptom dominance in Parkinson's disease (PD). PATIENTS AND METHODS One hundred and forty-six PD patients with symmetric symptoms (92 males and 54 females), aged 64.3 ± 9.1 years old, from a series of 247 PD patients were assessed for handedness and clinical features. The severity of PD was scored by unified Parkinson's disease rating scale (UPDRS) and Hoehn-Yahr staging on the "ON" state. RESULTS Of 134 right-handed patients (91.8%), 83 (61.7%) had an initial onset on the right side (P=0.008), while of 12 left-handed patients (8.2%), 9 (75.0%) had an initial onset on the left side (P=0.013). Out of right-handed patients, 103 (76.9%) had the right-side dominance of PD symptoms (P<0.001). Among the left-handed subjects, 7 patients (58.3%) had left-sided and 5 patients (41.7%) had right-sided symptom dominance (P=0.564). In general, dominant side of symptoms was in accordance with handedness (P=0.008). In right-handed patients, rest tremor was the most common initial symptom (P<0.001), while rest tremor and rigidity-bradykinesia were initial symptoms in left-handed patients (P=0.366). CONCLUSIONS PD symptoms emerge more often on the dominant hand-side, and the dominant side of symptoms is in accordance with handedness.
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Affiliation(s)
- Jie Shi
- Department of Neurology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Jie Liu
- Department of Neurology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Qiumin Qu
- Department of Neurology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China.
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Prakash BD, Sitoh YY, Tan LC, Au WL. Asymmetrical diffusion tensor imaging indices of the rostral substantia nigra in Parkinson's disease. Parkinsonism Relat Disord 2012; 18:1029-33. [DOI: 10.1016/j.parkreldis.2012.05.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 03/22/2012] [Accepted: 05/13/2012] [Indexed: 10/28/2022]
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Scherfler C, Seppi K, Mair KJ, Donnemiller E, Virgolini I, Wenning GK, Poewe W. Left hemispheric predominance of nigrostriatal dysfunction in Parkinson’s disease. Brain 2012; 135:3348-54. [DOI: 10.1093/brain/aws253] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Flasskamp A, Kotz SA, Schlegel U, Skodda S. Acceleration of syllable repetition in Parkinson's disease is more prominent in the left-side dominant patients. Parkinsonism Relat Disord 2012; 18:343-7. [DOI: 10.1016/j.parkreldis.2011.11.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 11/12/2011] [Accepted: 11/18/2011] [Indexed: 10/14/2022]
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Asymmetry in parkinsonism, spreading pathogens and the nose. Parkinsonism Relat Disord 2011; 18:1-9. [PMID: 21752693 DOI: 10.1016/j.parkreldis.2011.06.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 06/17/2011] [Accepted: 06/18/2011] [Indexed: 11/20/2022]
Abstract
Parkinson's disease, as well as many other parkinsonisms, including most toxic, neurodegenerative and familial types are typically asymmetric. No explanation for this phenomenon exists. A summary of the frequency of asymmetry in a spectrum of parkinsonian disorders is provided. Evidence against asymmetry being the result of normal asymmetries of the substantia nigrais reviewed. Asymmetry either results from a greater susceptibility on one side or a spreading pathology entering or starting on one side of the CNS. With the increasing evidence for spreading pathologies (toxins, viruses, α-synuclein), knowledge of neuroanatomical connections, and literature implicating spreading pathogens from the enteric and olfactory nerves, potential explanations can be theorized and explored, including the possibility of a pathogen preferentially entering or originating in the olfactory bulb on one side, with subsequent involvement of the other side.
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