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Sung C, Oh SJ, Kim JS. Imaging Procedure and Clinical Studies of [ 18F]FP-CIT PET. Nucl Med Mol Imaging 2024; 58:185-202. [PMID: 38932763 PMCID: PMC11196481 DOI: 10.1007/s13139-024-00840-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/15/2023] [Accepted: 01/05/2024] [Indexed: 06/28/2024] Open
Abstract
N-3-[18F]fluoropropyl-2β-carbomethoxy-3β-4-iodophenyl nortropane ([18F]FP-CIT) is a radiopharmaceutical for dopamine transporter (DAT) imaging using positron emission tomography (PET) to detect dopaminergic neuronal degeneration in patients with parkinsonian syndrome. [18F]FP-CIT was granted approval by the Ministry of Food and Drug Safety in 2008 as the inaugural radiopharmaceutical for PET imaging, and it has found extensive utilization across numerous institutions in Korea. This review article presents an imaging procedure for [18F]FP-CIT PET to aid nuclear medicine physicians in clinical practice and systematically reviews the clinical studies associated with [18F]FP-CIT PET.
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Affiliation(s)
- Changhwan Sung
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505 Republic of Korea
| | - Seung Jun Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505 Republic of Korea
| | - Jae Seung Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505 Republic of Korea
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2
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Rukavina K, Mulholland N, Corcoran B, Skoric MK, Staunton J, Rota S, Zinzalias P, Wu K, Fieldwalker A, Bannister K, Rizos A, Chaudhuri KR. Musculoskeletal pain in Parkinson's disease: Association with dopaminergic deficiency in the caudate nucleus. Eur J Pain 2024; 28:244-251. [PMID: 37587725 DOI: 10.1002/ejp.2172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/09/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Musculoskeletal (MSK) pain affects over 80% of People with Parkinson's (PD, PwP) and may, in part, be dopaminergic in origin, as dopaminergic medication often leads to its relief. METHODS PwP who underwent striatal dopamine transporter visualization with a radiopharmaceutical DaTscan™ (123 I-Ioflupane Injection) using a single-photon emission computed tomography (SPECT) as a part of their clinical-diagnostic work up were enrolled in the "Non-motor International Longitudinal Study" (NILS; UK National Institute for Health Research Clinical Research Network Number 10084) and included in this cross-sectional analysis. The association between specific DaTscan binding ratios for each striatum, the caudate nucleus and putamen and clinical ratings for MSK pain (assessed using the King's Parkinson's Disease Pain Scale (KPPS)) were analysed. RESULTS 53 PwP (30.2% female; age: 63.79 ± 11.31 years; disease duration (DD): 3.32 (0.31-14.41) years; Hoehn & Yahr stage (H&Y): 2 (1-4); Levodopa Equivalent Daily Dose (LEDD): 543.08 ± 308.94 mg) were assessed and included in this analysis. MSK pain was highly prevalent (71.7% of all participants, mean KPPS Item 1 score 5.34 ± 4.76) and did not correlate with the motor symptoms burden (SCOPA-Motor total score; p = 0.783) but showed a significant correlation with quality of life (PDQ-8, rs = 0.290, p = 0.035). z-scores for the caudate nucleus (Exp (B) = 0.367, 95% CI for Exp (B) 0.148-0.910, p = 0.031) and striatum (Exp (B) = 0.338, 95% CI for Exp (B) 0.123-0.931, p = 0.036), adjusted for DD, H&Y and LEDD, were significant determinants of MSK pain. CONCLUSIONS Our findings suggest an association between MSK pain in PwP and the severity of dopaminergic deficiency in the caudate nucleus. SIGNIFICANCE In People with Parkinson's, musculoskeletal pain does not arise simply as a direct sequel to motor symptoms-instead, it is linked to the severity of dopaminergic depletion in the caudate nucleus.
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Affiliation(s)
- Katarina Rukavina
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - Nicola Mulholland
- Department of Nuclear Medicine, King's College Hospital NHS Foundation Trust, London, UK
| | - Benjamin Corcoran
- Department of Nuclear Medicine, King's College Hospital NHS Foundation Trust, London, UK
| | - Magdalena Krbot Skoric
- Laboratory for Cognitive and Experimental Neurophysiology, Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia
| | - Juliet Staunton
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - Silvia Rota
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - Pavlos Zinzalias
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - Kit Wu
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - Anna Fieldwalker
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
| | - Kirsty Bannister
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
| | - Alexandra Rizos
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
| | - K Ray Chaudhuri
- Institute of Psychiatry, Psychology & Neuroscience at King's College London, London, UK
- Parkinson's Foundation Centre of Excellence, King's College Hospital NHS Foundation Trust, London, UK
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Cristini J, Parwanta Z, De las Heras B, Medina-Rincon A, Paquette C, Doyon J, Dagher A, Steib S, Roig M. Motor Memory Consolidation Deficits in Parkinson's Disease: A Systematic Review with Meta-Analysis. JOURNAL OF PARKINSON'S DISEASE 2023; 13:865-892. [PMID: 37458048 PMCID: PMC10578244 DOI: 10.3233/jpd-230038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/21/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND The ability to encode and consolidate motor memories is essential for persons with Parkinson's disease (PD), who usually experience a progressive loss of motor function. Deficits in memory encoding, usually expressed as poorer rates of skill improvement during motor practice, have been reported in these patients. Whether motor memory consolidation (i.e., motor skill retention) is also impaired is unknown. OBJECTIVE To determine whether motor memory consolidation is impaired in PD compared to neurologically intact individuals. METHODS We conducted a pre-registered systematic review (PROSPERO: CRD42020222433) following PRISMA guidelines that included 46 studies. RESULTS Meta-analyses revealed that persons with PD have deficits in retaining motor skills (SMD = -0.17; 95% CI = -0.32, -0.02; p = 0.0225). However, these deficits are task-specific, affecting sensory motor (SMD = -0.31; 95% CI -0.47, -0.15; p = 0.0002) and visuomotor adaptation (SMD = -1.55; 95% CI = -2.32, -0.79; p = 0.0001) tasks, but not sequential fine motor (SMD = 0.17; 95% CI = -0.05, 0.39; p = 0.1292) and gross motor tasks (SMD = 0.04; 95% CI = -0.25, 0.33; p = 0.7771). Importantly, deficits became non-significant when augmented feedback during practice was provided, and additional motor practice sessions reduced deficits in sensory motor tasks. Meta-regression analyses confirmed that deficits were independent of performance during encoding, as well as disease duration and severity. CONCLUSION Our results align with the neurodegenerative models of PD progression and motor learning frameworks and emphasize the importance of developing targeted interventions to enhance motor memory consolidation in PD.
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Affiliation(s)
- Jacopo Cristini
- Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Zohra Parwanta
- Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Bernat De las Heras
- Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Almudena Medina-Rincon
- Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
- Grupo de investigación iPhysio, San Jorge University, Zaragoza, Aragón, Spain
- Department of Physiotherapy, San Jorge University, Zaragoza, Aragón, Spain
| | - Caroline Paquette
- Department of Kinesiology & Physical Education, McGill University, Montreal, QC,Canada
- Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
| | - Julien Doyon
- Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
| | - Alain Dagher
- Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
| | - Simon Steib
- Department of Human Movement, Training and Active Aging, Institute of Sports and Sports Sciences, Heidelberg University, Heidelberg, Germany
| | - Marc Roig
- Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, QC, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, QC, Canada
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Mehanna R, Smilowska K, Fleisher J, Post B, Hatano T, Pimentel Piemonte ME, Kumar KR, McConvey V, Zhang B, Tan E, Savica R. Age Cutoff for Early-Onset Parkinson's Disease: Recommendations from the International Parkinson and Movement Disorder Society Task Force on Early Onset Parkinson's Disease. Mov Disord Clin Pract 2022; 9:869-878. [PMID: 36247919 PMCID: PMC9547138 DOI: 10.1002/mdc3.13523] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 11/09/2022] Open
Abstract
Background Early-onset Parkinson's disease (EOPD)/young-onset Parkinson's disease (YOPD) is defined as Parkinson's disease (PD) with an age at onset (AAO) after age 21 years but before the usual AAO for PD. Consensus is lacking, and the reported maximal age for EOPD/YOPD has varied from 40 to 60 years, leading to a lack of uniformity in published studies and difficulty in harmonization of data. EOPD and YOPD have both been used in the literature, somewhat interchangeably. Objective To define the nomenclature and AAO cutoff for EOPD/YOPD. Methods An extensive review of the literature and task force meetings were conducted. Conclusions were reached by consensus. Results First, the literature has seen a shift from the use of YOPD toward EOPD. This seems motivated by an attempt to avoid age-related stigmatization of patients. Second, in defining EOPD, 56% of the countries use 50 or 51 years as the cutoff age. Third, the majority of international genetic studies in PD use an age cutoff of younger than 50 years to define EOPD. Fourth, many studies suggest that changes in the estrogen level can affect the predisposition to develop PD, making the average age at menopause of 50 years an important factor to consider when defining EOPD. Fifth, considering the differential impact of the AAO of PD on professional and social life, using 50 years as the upper cutoff for the definition of EOPD seems reasonable. Conclusions This task force recommends the use of EOPD rather than YOPD. It defines EOPD as PD with AAO after 21 years but before 50 years.
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Affiliation(s)
- Raja Mehanna
- UTMove, Departement of NeurologyUniversity of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Katarzyna Smilowska
- Department of NeurologySilesian Center of NeurologyKatowicePoland
- Department of Neurology5th Regional HospitalSosnowiecPoland
| | - Jori Fleisher
- Department of Neurological SciencesRush University School of MedicineChicagoIllinoisUSA
| | - Bart Post
- Department of NeurologyRadboudumcNijmegenThe Netherlands
| | - Taku Hatano
- Department of NeurologyJuntendo University School of MedicineTokyoJapan
| | - Maria Elisa Pimentel Piemonte
- Physical Therapy, Speech Therapy, and Occupational TherapyDepartment, Medical School, University of São PauloSão PauloBrazil
| | - Kishore Raj Kumar
- Molecular Medicine Laboratory and Department of Neurology, Concord Repatriation General Hospital, Faculty of Medicine and HealthUniversity of SydneySydneyNew South WalesAustralia
- Kinghorn Centre for Clinical GenomicsGarvan Institute of Medical ResearchDarlinghurstNew South WalesAustralia
| | | | - Baorong Zhang
- Department of NeurologyThe Second Affiliated HospitalHangzhouChina
| | - Eng‐King Tan
- Department of NeurologyNational Neuroscience InstituteSingaporeSingapore
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Li Y, Qiu Z, Fan X, Liu X, Chang EIC, Xu Y. Integrated 3d flow-based multi-atlas brain structure segmentation. PLoS One 2022; 17:e0270339. [PMID: 35969596 PMCID: PMC9377636 DOI: 10.1371/journal.pone.0270339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/09/2022] [Indexed: 11/18/2022] Open
Abstract
MRI brain structure segmentation plays an important role in neuroimaging studies. Existing methods either spend much CPU time, require considerable annotated data, or fail in segmenting volumes with large deformation. In this paper, we develop a novel multi-atlas-based algorithm for 3D MRI brain structure segmentation. It consists of three modules: registration, atlas selection and label fusion. Both registration and label fusion leverage an integrated flow based on grayscale and SIFT features. We introduce an effective and efficient strategy for atlas selection by employing the accompanying energy generated in the registration step. A 3D sequential belief propagation method and a 3D coarse-to-fine flow matching approach are developed in both registration and label fusion modules. The proposed method is evaluated on five public datasets. The results show that it has the best performance in almost all the settings compared to competitive methods such as ANTs, Elastix, Learning to Rank and Joint Label Fusion. Moreover, our registration method is more than 7 times as efficient as that of ANTs SyN, while our label transfer method is 18 times faster than Joint Label Fusion in CPU time. The results on the ADNI dataset demonstrate that our method is applicable to image pairs that require a significant transformation in registration. The performance on a composite dataset suggests that our method succeeds in a cross-modality manner. The results of this study show that the integrated 3D flow-based method is effective and efficient for brain structure segmentation. It also demonstrates the power of SIFT features, multi-atlas segmentation and classical machine learning algorithms for a medical image analysis task. The experimental results on public datasets show the proposed method's potential for general applicability in various brain structures and settings.
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Affiliation(s)
- Yeshu Li
- School of Computer Science and Engineering, Beihang University, Beijing, China
| | - Ziming Qiu
- Electrical and Computer Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, United States of America
| | - Xingyu Fan
- Bioengineering College, Chongqing University, Chongqing, China
| | - Xianglong Liu
- School of Computer Science and Engineering, Beihang University, Beijing, China
| | | | - Yan Xu
- School of Biological Science and Medical Engineering, State Key Laboratory of Software Development Environment, Key Laboratory of Biomechanics, Mechanobiology of Ministry of Education and Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China
- Microsoft Research, Beijing, China
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6
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Waldthaler J, Stock L, Krüger-Zechlin C, Timmermann L. Age at Parkinson's disease onset modulates the effect of levodopa on response inhibition: Support for the dopamine overdose hypothesis from the antisaccade task. Neuropsychologia 2021; 163:108082. [PMID: 34728241 DOI: 10.1016/j.neuropsychologia.2021.108082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/07/2021] [Accepted: 10/29/2021] [Indexed: 11/15/2022]
Abstract
The antisaccade task is an established eye-tracking paradigm to explore response inhibition. While many studies showed that antisaccade performance is impaired in Parkinson's disease (PD), the effect of dopaminergic medication is still an area of debate. According to the dopamine overdose hypothesis, intrinsic basal dopamine levels in ventral parts of the striatum determine whether levodopa intake has beneficial or detrimental effects on dopamine-dependent cognitive tasks. The objective of this study was therefore to explore the effect of several disease-related factors on changes in antisaccade performance after levodopa intake in PD. Thirty-five individuals with PD (and 30 healthy controls) performed antisaccades in OFF and ON medication state. Multiple linear regressions were calculated to predict the change in antisaccade latency, directive errors and express saccade rate based on age at PD onset, disease duration, levodopa-equivalent daily dose, motor symptom severity and executive functions. Levodopa intake did not alter antisaccade performance on a group level. However, the effect of levodopa was differentially modulated by age at PD onset and motor symptom severity. Earlier disease onset and milder motor symptoms in OFF medication state were associated with reduced response inhibition capacity after levodopa intake measured as increased express saccade and error rates. Our results indicate that levodopa may have opposing effects on oculomotor response inhibition dependent on the age at PD onset and motor disease severity. Assuming less dopaminergic loss in ventral parts of the striatum in early compared to late onset PD, these findings support the dopamine overdose hypothesis.
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Affiliation(s)
- Josefine Waldthaler
- Department of Neurology, Philipps-University Marburg, Marburg, Germany; CMBB - Center for Mind, Brain, and Behavior, Universities of Marburg and Gießen, Marburg, Germany; Department of Neurology, University Hospital Giessen and Marburg, Campus Marburg, Marburg, Germany.
| | - Lena Stock
- Department of Neurology, Philipps-University Marburg, Marburg, Germany
| | | | - Lars Timmermann
- Department of Neurology, Philipps-University Marburg, Marburg, Germany; CMBB - Center for Mind, Brain, and Behavior, Universities of Marburg and Gießen, Marburg, Germany; Department of Neurology, University Hospital Giessen and Marburg, Campus Marburg, Marburg, Germany
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7
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Aslan DH, Hernandez ME, Frechette ML, Gephart AT, Soloveychik IM, Sosnoff JJ. The neural underpinnings of motor learning in people with neurodegenerative diseases: A scoping review. Neurosci Biobehav Rev 2021; 131:882-898. [PMID: 34624367 DOI: 10.1016/j.neubiorev.2021.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 09/02/2021] [Accepted: 10/02/2021] [Indexed: 11/25/2022]
Abstract
Chronic progressive neurodegenerative diseases (NDD) cause mobility and cognitive impairments that disrupt quality of life. The learning of new motor skills, motor learning, is a critical component of rehabilitation efforts to counteract these chronic progressive impairments. In people with NDD, there are impairments in motor learning which appear to scale with the severity of impairment. Compensatory cortical activity plays a role in counteracting motor learning impairments in NDD. Yet, the functional and structural brain alterations associated with motor learning have not been synthesized in people with NDD. The purpose of this scoping review is to explore the neural alterations of motor learning in NDD. Thirty-five peer-reviewed original articles met the inclusion criteria. Participant demographics, motor learning results, and brain imaging results were extracted. Distinct motor learning associated compensatory processes were identified across NDD populations. Evidence from this review suggests the success of motor learning in NDD populations depends on the neural alterations and their interaction with motor learning networks, as well as the progression of disease.
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Affiliation(s)
- Daniel H Aslan
- Department of Kinesiology and Community Health, United States.
| | | | - Mikaela L Frechette
- Department of Molecular and Cellular Biology, University of Illinois, Urbana Champaign, United States
| | - Aaron T Gephart
- Department of Molecular and Cellular Biology, University of Illinois, Urbana Champaign, United States
| | - Isaac M Soloveychik
- Department of Molecular and Cellular Biology, University of Illinois, Urbana Champaign, United States
| | - Jacob J Sosnoff
- Department of Molecular and Cellular Biology, University of Illinois, Urbana Champaign, United States
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Niyomrat K, Cheaha D, Nukitram J, Kumarnsit E. Locomotor activity and resting local field potential oscillatory rhythms of 6-OHDA mouse model of Parkinson's disease in response to acute and repeated treatments with L-dopa. Neurosci Lett 2021; 759:136007. [PMID: 34098022 DOI: 10.1016/j.neulet.2021.136007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/26/2021] [Accepted: 05/30/2021] [Indexed: 11/15/2022]
Abstract
Phase-amplitude coupling (PAC) of local field potential (LFP) has been recognized as higher-order representation of brain states. Neuronal loss in the striatum leads to Parkinson's disease (PD) symptoms and modifies LFP oscillation. However, PAC in the striatum of PD mouse model induced by 6-hydroxydopamne (6-OHDA) remained to be investigated. Male Swiss albino ICR mice were implanted with intracranial electrode and injected with 6-OHDA to the left striatum. Levodopa (L-dopa) (10 mg/kg, oral) was used for treatment once a day from day 15-19. Locomotor activity and resting LFP signals were selectively analyzed on day 15 and 19. One-way ANOVA revealed significant decreases in travelled distance induced by 6-OHDA on both days (p ≤ 0.05). However, the decreased travelled distances were significantly reversed by L-dopa. On day 15, LFP powers of theta, alpha, beta and low gamma waves were significantly increased by 6-OHDA injection and the powers of beta and low gamma were significantly reversed to control level by treatment with L-dopa. On day 19, LFP powers of delta, theta, alpha, beta and low gamma waves were significantly increased by 6-OHDA injection and the powers of low gamma were significantly reversed to control level by treatment with L-dopa. Theta-gamma PAC analyses also confirmed significant increase in modulation index (MI) induced by 6-OHDA on day 19. However, L-dopa failed to significantly reverse the MI to control level. These findings indicated theta-gamma coupling in the striatum of PD mouse model. Taken together, change in striatal theta-gamma PAC might be one of biomarkers in addition to hypokinesia and increased LFP powers that reflect disrupted neural mechanisms in PD mouse model.
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Affiliation(s)
- Kirati Niyomrat
- Physiology program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand
| | - Dania Cheaha
- Biology program, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand
| | - Jakkrit Nukitram
- Physiology program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand
| | - Ekkasit Kumarnsit
- Physiology program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla 90112, Thailand.
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9
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Peng S, Tang C, Schindlbeck K, Rydzinski Y, Dhawan V, Spetsieris PG, Ma Y, Eidelberg D. Dynamic 18F-FPCIT PET: Quantification of Parkinson's disease metabolic networks and nigrostriatal dopaminergic dysfunction in a single imaging session. J Nucl Med 2021; 62:jnumed.120.257345. [PMID: 33741649 PMCID: PMC8612203 DOI: 10.2967/jnumed.120.257345] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022] Open
Abstract
Previous multi-center imaging studies with 18F-FDG PET have established the presence of Parkinson's disease motor- and cognition-related metabolic patterns termed PDRP and PDCP in patients with this disorder. Given that in PD cerebral perfusion and glucose metabolism are typically coupled in the absence of medication, we determined whether subject expression of these disease networks can be quantified in early-phase images from dynamic 18F-FPCIT PET scans acquired to assess striatal dopamine transporter (DAT) binding. Methods: We studied a cohort of early-stage PD patients and age-matched healthy control subjects who underwent 18F-FPCIT at baseline; scans were repeated 4 years later in a smaller subset of patients. The early 18F-FPCIT frames, which reflect cerebral perfusion, were used to compute PDRP and PDCP expression (subject scores) in each subject, and compared to analogous measures computed based on 18F-FDG PET scan when additionally available. The late 18F-FPCIT frames were used to measure caudate and putamen DAT binding in the same individuals. Results: PDRP subject scores from early-phase 18F-FPCIT and 18F-FDG scans were elevated and striatal DAT binding reduced in PD versus healthy subjects. The PDRP scores from 18F-FPCIT correlated with clinical motor ratings, disease duration, and with corresponding measures from 18F-FDG PET. In addition to correlating with disease duration and analogous 18F-FDG PET values, PDCP scores correlated with DAT binding in the caudate/anterior putamen. PDRP and PDCP subject scores using either method rose over 4 years whereas striatal DAT binding declined over the same time period. Conclusion: Early-phase images obtained with 18F-FPCIT PET can provide an alternative to 18F-FDG PET for PD network quantification. This technique therefore allows PDRP/PDCP expression and caudate/putamen DAT binding to be evaluated with a single tracer in one scanning session.
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Affiliation(s)
- Shichun Peng
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - Chris Tang
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - Katharina Schindlbeck
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - Yaacov Rydzinski
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Vijay Dhawan
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - Phoebe G. Spetsieris
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - Yilong Ma
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
| | - David Eidelberg
- Center for Neurosciences, Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York; and
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10
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Jia X, Pan Z, Chen H, Wang Z, Li K, Wang X, Wang Z, Ma H, Feng T, Yang Q. Differential functional dysconnectivity of caudate nucleus subdivisions in Parkinson's disease. Aging (Albany NY) 2020; 12:16183-16194. [PMID: 32687066 PMCID: PMC7485745 DOI: 10.18632/aging.103628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/18/2020] [Indexed: 04/21/2023]
Abstract
Caudate dopaminergic dysfunction is implied in the pathophysiology of patients with Parkinson's disease (PD). Still, connectivity specificities of the caudate nucleus (CN) subdivisions and the effect of dopamine are poorly understood. We collected MRI and neuropsychological data from 34 PD patients and 26 age- and sex-matched healthy elderly individuals (HEs) in this study. Resting-state functional connectivity analysis revealed that compared to the other CN subdivisions, the CN head was more strongly connected to the default mode network (DMN), the CN body to the frontoparietal network (FPN), and the CN tail to the visual network in HEs. PD patients off medication showed reduced connectivity within all these subdivision networks. In PD patients on medication, functional connectivity in the CN head network was significantly improved in the medial prefrontal cortex and in the body network it was improved in the dorsolateral prefrontal cortex. These improvements contributed to ameliorated motivation and cognitive function in PD patients. Our results highlighted the specific alterations and dopamine modulation in these CN subdivision networks in PD, which may provide insight into the pathophysiology and therapeutics of this disease.
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Affiliation(s)
- Xiuqin Jia
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
- Equal contribution
| | - Zhenyu Pan
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
- Equal contribution
| | - Huimin Chen
- Department of Movement Disorders, Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
- Equal contribution
| | - Zhijiang Wang
- Peking University Sixth Hospital (Institute of Mental Health), Beijing, China
- NHC Key Laboratory of Mental Health (Peking University), Beijing, China
- National Clinical Research Centerfor Mental Disorders (Peking University Sixth Hospital), Beijing, China
| | - Kun Li
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xuemei Wang
- Department of Movement Disorders, Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Zhan Wang
- Department of Movement Disorders, Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Huizi Ma
- Department of Movement Disorders, Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Tao Feng
- Department of Movement Disorders, Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Parkinson's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Qi Yang
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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11
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Li H, Hirano S, Furukawa S, Nakano Y, Kojima K, Ishikawa A, Tai H, Horikoshi T, Iimori T, Uno T, Matsuda H, Kuwabara S. The Relationship Between the Striatal Dopaminergic Neuronal and Cognitive Function With Aging. Front Aging Neurosci 2020; 12:41. [PMID: 32184717 PMCID: PMC7058549 DOI: 10.3389/fnagi.2020.00041] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/06/2020] [Indexed: 12/03/2022] Open
Abstract
Both cognitive function and striatal dopamine function decline by normal aging. However, the relationship among these three factors remains unclear. The aim of this study was to elucidate the association among age-related changes in the striatal dopamine transporter (DAT) and cognitive function in healthy subjects. The 30 healthy volunteers were enrolled in this research, the age ranged from 41 to 82 (64.5 ± 11.5, mean ± SD). All subjects were scanned with both T1-weighted magnetic resonance imaging (MRI) and 123I-FP-CIT single-photon emission computed tomography (SPECT) images. The Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) was used to evaluate cognitive function. Six spherical regions of interest (ROI) using 10 mm in diameter on the caudate nucleus, anterior putamen and posterior putamen were manually drawn on MRI image which was applied onto SPECT image. The relationship between striatal occipital ratio (SOR) values and WAIS-III subscore were analyzed by multiple regression analysis. Subscores which was significant were further analyzed by path analyses. Full intelligence quotient (IQ), verbal IQ, verbal comprehension were all positively correlated with age-adjusted striatal DAT binding (P < 0.01). Multiple regression analyses revealed that the coding digit symbol correlated with all striatal regions except for the left caudate (P < 0.04). Picture completion and right caudate, similarities and left caudate also showed a positive correlation (P < 0.04). Path analysis found that the right caudate and picture completion; the left caudate and similarities were correlated independently from age, whereas the models of coding digit symbol were not significant. These results suggest that age-based individual diversity of striatal DAT binding was associated with verbal function, and the caudate nucleus plays an important role in this association.
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Affiliation(s)
- Hongliang Li
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shigeki Hirano
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shogo Furukawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Neurology, Japanese Red Cross Narita Hospital, Chiba, Japan
| | - Yoshikazu Nakano
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazuho Kojima
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Neurology, Chiba Rosai Hospital, Chiba, Japan
| | - Ai Ishikawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Neurology, JR Tokyo General Hospital, Tokyo, Japan
| | - Hong Tai
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takuro Horikoshi
- Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takashi Iimori
- Department of Radiology, Chiba University Hospital, Chiba, Japan
| | - Takashi Uno
- Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroshi Matsuda
- Integrative Brain Imaging Center, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Satoshi Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
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12
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Xu J, Jiao F, Huang Y, Luo X, Xu Q, Li L, Liu X, Zuo C, Wu P, Zhuang X. A Fully Automatic Framework for Parkinson's Disease Diagnosis by Multi-Modality Images. Front Neurosci 2019; 13:874. [PMID: 31507358 PMCID: PMC6716425 DOI: 10.3389/fnins.2019.00874] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 08/05/2019] [Indexed: 11/29/2022] Open
Abstract
Background Parkinson’s disease (PD) is a prevalent long-term neurodegenerative disease. Though the criteria of PD diagnosis are relatively well defined, current diagnostic procedures using medical images are labor-intensive and expertise-demanding. Hence, highly integrated automatic diagnostic algorithms are desirable. Methods In this work, we propose an end-to-end multi-modality diagnostic framework, including segmentation, registration, feature extraction and machine learning, to analyze the features of striatum for PD diagnosis. Multi-modality images, including T1-weighted MRI and 11C-CFT PET, are integrated into the proposed framework. The reliability of this method is validated on a dataset with the paired images from 49 PD subjects and 18 Normal (NL) subjects. Results We obtained a promising diagnostic accuracy in the PD/NL classification task. Meanwhile, several comparative experiments were conducted to validate the performance of the proposed framework. Conclusion We demonstrated that (1) the automatic segmentation provides accurate results for the diagnostic framework, (2) the method combining multi-modality images generates a better prediction accuracy than the method with single-modality PET images, and (3) the volume of the striatum is proved to be irrelevant to PD diagnosis.
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Affiliation(s)
- Jiahang Xu
- School of Data Science, Fudan University, Shanghai, China.,Fudan-Xinzailing Joint Research Center for Big Data, Fudan University, Shanghai, China
| | - Fangyang Jiao
- Department of Nuclear Medicine, Daping Hospital, Army Medical University, Chongqing, China
| | - Yechong Huang
- School of Data Science, Fudan University, Shanghai, China
| | - Xinzhe Luo
- School of Data Science, Fudan University, Shanghai, China
| | - Qian Xu
- Department of Nuclear Medicine, North Huashan Hospital, Fudan University, Shanghai, China
| | - Ling Li
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Xueling Liu
- Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Chuantao Zuo
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Ping Wu
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiahai Zhuang
- School of Data Science, Fudan University, Shanghai, China.,Fudan-Xinzailing Joint Research Center for Big Data, Fudan University, Shanghai, China
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13
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Mehanna R, Jankovic J. Young-onset Parkinson's disease: Its unique features and their impact on quality of life. Parkinsonism Relat Disord 2019; 65:39-48. [DOI: 10.1016/j.parkreldis.2019.06.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/29/2019] [Accepted: 06/01/2019] [Indexed: 12/23/2022]
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14
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Peters S, Eng JJ, Liu-Ambrose T, Borich MR, Dao E, Amanian A, Boyd LA. Brain activity associated with Dual-task performance of Ankle motor control during cognitive challenge. Brain Behav 2019; 9:e01349. [PMID: 31265216 PMCID: PMC6710191 DOI: 10.1002/brb3.1349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/24/2019] [Accepted: 06/08/2019] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Skilled Ankle motor control is frequently required while performing secondary cognitively demanding tasks such as socializing and avoiding obstacles while walking, termed "Dual tasking." It is likely that Dual-task performance increases demand on the brain, as both motor and cognitive systems require neural resources. The purpose of this study was to use functional MRI to understand which brain regions are involved in resolving Dual-task interference created by requiring high levels of Ankle motor control during a cognitive task. METHODS Using functional MRI, brain activity was measured in sixteen young adults during performance of visually cued Ankle plantar flexion to a target (Ankle task), a cognitive task (Flanker task), and both tasks simultaneously (Dual task). RESULTS Dual-task performance did not impact the Ankle task (p = 0.78), but did affect behavior on the Flanker task. Response times for both the congruent and incongruent conditions during the Flanker task were significantly longer (p < 0.001, p = 0.050, respectively), and accuracy for the congruent condition decreased during Dual tasking (p < 0.001). Activity in 3 brain regions was associated with Dual-task Flanker performance. Percent signal change from baseline in Brodmann area (BA) 5, BA6, and the left caudate correlated with performance on the Flanker task during the Dual-task condition (R2 = 0.261, p = 0.04; R2 = -0.258, p = 0.04; R2 = 0.303, p = 0.03, respectively). CONCLUSIONS Performance of Ankle motor control may be prioritized over a cognitive task during Dual-task performance. Our work advances Dual-task research by elucidating patterns of whole brain activity for Dual tasks that require Ankle motor control during a cognitive task.
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Affiliation(s)
- Sue Peters
- Faculty of Medicine, Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada
| | - Janice J Eng
- Faculty of Medicine, Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada
| | - Teresa Liu-Ambrose
- Faculty of Medicine, Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael R Borich
- School of Medicine, Division of Physical Therapy, Emory University, Atlanta, Georgia
| | - Elizabeth Dao
- Graduate Program in Rehabilitation Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ameen Amanian
- Faculty of Applied Science, Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lara A Boyd
- Faculty of Medicine, Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada
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15
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Martinez-Horta S, Horta-Barba A, Kulisevsky J. Cognitive and behavioral assessment in Parkinson's disease. Expert Rev Neurother 2019; 19:613-622. [PMID: 31180250 DOI: 10.1080/14737175.2019.1629290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Introduction: Cognitive impairment and behavioral disturbances are common findings in Parkinson's disease (PD). Despite initially being considered late complications of the disease, it is currently accepted that almost all PD patients will exhibit cognitive and behavioral abnormalities from the early and even the premotor stages of the disease. Areas covered: The present review focuses on the cognitive profile of PD, the clinical picture of PD-MCI and dementia in PD (PDD) and the recommended methods for cognitive assessment in this population. The authors also describe the more representative neuropsychiatric alterations and provide an overview of the recommended methods of assessment. Expert opinion: Cognitive and behavioral symptoms are inherent to PD, appear in a vast majority of patients at some point during disease progression and have an enormous impact on health-related quality of life of patients and caregivers. Validated methods of cognitive and behavioral assessment are currently developed and must be used in research and clinical settings.
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Affiliation(s)
- Saul Martinez-Horta
- a Movement Disorders Unit, Neurology Department , Hospital de la Santa Creu i Sant Pau , Barcelona , Spain.,b Biomedical Research Institute (IIB-Sant Pau) , Barcelona , Spain.,c Centro de Investigación en Red-Enfermedades Neurodegenerativas (CIBERNED) , Madrid , Spain.,d Autonomous University of Barcelona , Barcelona , Spain
| | - Andrea Horta-Barba
- a Movement Disorders Unit, Neurology Department , Hospital de la Santa Creu i Sant Pau , Barcelona , Spain.,b Biomedical Research Institute (IIB-Sant Pau) , Barcelona , Spain.,c Centro de Investigación en Red-Enfermedades Neurodegenerativas (CIBERNED) , Madrid , Spain
| | - Jaime Kulisevsky
- a Movement Disorders Unit, Neurology Department , Hospital de la Santa Creu i Sant Pau , Barcelona , Spain.,b Biomedical Research Institute (IIB-Sant Pau) , Barcelona , Spain.,c Centro de Investigación en Red-Enfermedades Neurodegenerativas (CIBERNED) , Madrid , Spain.,d Autonomous University of Barcelona , Barcelona , Spain
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16
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Alterations of the Brain Microstructure and Corresponding Functional Connectivity in Early-Blind Adolescents. Neural Plast 2019; 2019:2747460. [PMID: 30996726 PMCID: PMC6408999 DOI: 10.1155/2019/2747460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 10/17/2018] [Accepted: 12/27/2018] [Indexed: 11/17/2022] Open
Abstract
Although evidence from studies on blind adults indicates that visual deprivation early in life leads to structural and functional disruption and reorganization of the brain, whether young blind people show similar patterns remains unknown. Therefore, this study is aimed at exploring the structural and functional alterations of the brain of early-blind adolescents (EBAs) compared to normal-sighted controls (NSCs) and investigating the effects of residual light perception on brain microstructure and function in EBAs. We obtained magnetic resonance imaging (MRI) data from 23 EBAs (8 with residual light perception (LPs), 15 without light perception (NLPs)) and 21 NSCs (age range 11-19 years old). Whole-brain voxel-based analyses of diffusion tensor imaging metrics and region-of-interest analyses of resting-state functional connectivity (RSFC) were performed to compare patterns of brain microstructure and the corresponding RSFC between the groups. The results showed that structural disruptions of LPs and NLPs were mainly located in the occipital visual pathway. Compared with NLPs, LPs showed increased fractional anisotropy (FA) in the superior frontal gyrus and reduced diffusivity in the caudate nucleus. Moreover, the correlations between FA of the occipital cortices or mean diffusivity of the lingual gyrus and age were consistent with the development trajectory of the brain in NSCs, but inconsistent or even opposite in EBAs. Additionally, we found functional, but not structural, reorganization in NLPs compared with NSCs, suggesting that functional neuroplasticity occurs earlier than structural neuroplasticity in EBAs. Altogether, these findings provided new insights into the mechanisms underlying the neural reorganization of the brain in adolescents with early visual deprivation.
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17
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Mild cognitive impairment in Parkinson's disease. J Neural Transm (Vienna) 2019; 126:897-904. [PMID: 30963293 DOI: 10.1007/s00702-019-02003-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/30/2019] [Indexed: 01/18/2023]
Abstract
Understanding on the clinical features and neural mechanisms leading to cognitive impairment and dementia in Parkinson's disease (PD) has notably increased. At time of diagnosis, nearly all PD patients present some degree of cognitive impairment not enough severe as to significantly affect functional independence. However, even mild cognitive changes have a measurable impact to functional capacity in PD. A clinically practical differentiation is based on the importance of executive deficits in the early phases of cognitive impairment in PD and on the evidence stressing the transitional role of posterior-cortical impairment on the progression of PD-MCI to dementia. However, the pattern of cognitive impairment in PD is variable not just to the extents on which are the affected cognitive domains, but also on which are those domains that became affected first. Specific diagnostic criteria for mild cognitive impairment associated with PD (PD-MCI) and dementia (PDD) and operative guidelines for the cognitive assessment have been developed. In the present review, we will describe general notions regarding the mechanisms and the profile of cognitive deterioration in PD, the diagnostic criteria for PD-MCI, and some of the currently recommended assessment approaches.
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18
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Steel A, Silson EH, Stagg CJ, Baker CI. Differential impact of reward and punishment on functional connectivity after skill learning. Neuroimage 2019; 189:95-105. [PMID: 30630080 PMCID: PMC7612345 DOI: 10.1016/j.neuroimage.2019.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/20/2022] Open
Abstract
Reward and punishment shape behavior, but the mechanisms underlying their effect on skill learning are not well understood. Here, we tested whether the functional connectivity of premotor cortex (PMC), a region known to be critical for learning of sequencing skills, is altered after training when reward or punishment is given during training. Resting-state fMRI was collected in two experiments before and after participants trained on either a serial reaction time task (SRTT; n = 36) or force-tracking task (FTT; n = 36) with reward, punishment, or control feedback. In each experiment, training-related change in PMC functional connectivity was compared across feedback groups. In both tasks, we found that reward and punishment differentially affected PMC functional connectivity. On the SRTT, participants trained with reward showed an increase in functional connectivity between PMC and cerebellum as well as PMC and striatum, while participants trained with punishment showed an increase in functional connectivity between PMC and medial temporal lobe connectivity. After training on the FTT, subjects trained with control and reward showed increases in PMC connectivity with parietal and temporal cortices after training, while subjects trained with punishment showed increased PMC connectivity with ventral striatum. While the results from the two experiments overlapped in some areas, including ventral pallidum, temporal lobe, and cerebellum, these regions showed diverging patterns of results across the two tasks for the different feedback conditions. These findings suggest that reward and punishment strongly influence spontaneous brain activity after training, and that the regions implicated depend on the task learned.
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Affiliation(s)
- Adam Steel
- Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK; Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20814, USA.
| | - Edward H Silson
- Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Charlotte J Stagg
- Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK; Oxford Centre for Human Brain Activity (OHBA), Wellcome Centre for Integrative Neuroimaging, University Department of Psychiatry, University of Oxford, Oxford, OX3 9DU, UK
| | - Chris I Baker
- Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20814, USA
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Yang J, Archer DB, Burciu RG, Müller MLTM, Roy A, Ofori E, Bohnen NI, Albin RL, Vaillancourt DE. Multimodal dopaminergic and free-water imaging in Parkinson's disease. Parkinsonism Relat Disord 2019; 62:10-15. [PMID: 30639168 DOI: 10.1016/j.parkreldis.2019.01.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/17/2018] [Accepted: 01/04/2019] [Indexed: 02/05/2023]
Abstract
INTRODUCTION When using free-water diffusion imaging or positron emission tomography (PET), it is established that substania nigra microstructure and presynaptic dopamine activity are impaired in early PD. It is not well understood if these two forms of degeneration are redundant, or if they each provide a unique contribution to the clinical motor and cognitive symptoms. METHODS A total of 129 PD and 75 control individuals underwent motor and cognitive evaluations, and in vivo [11C]dihydrotetrabenazine (DTBZ) monoaminergic brain PET imaging and diffusion imaging. Correlations between free-water in the substantia nigra and striatal PET measures were analyzed. Unbiased multiple regression using a backward elimination method was performed between clinical severity and all imaging measures. RESULTS Inverse correlations were found between free-water in posterior substantia nigra and DTBZ binding in putamen and caudate. Multiple regression revealed that increased free-water in the posterior substantia nigra, decreased DTBZ binding in putamen, and age were predictors of higher Hoehn and Yahr stage, MDS-UPDRS III scores, and posture and gait sub-scores. Increased posterior substantia nigra free-water alone was associated tremor scores. Free-water in caudate and putamen did not predict measures of motor performance. Decreased DTBZ binding in caudate, increased free-water in caudate and posterior substantia nigra were associated with higher dementia ratings. CONCLUSIONS These findings suggest that free-water in the posterior substantia nigra and presynaptic dopamine imaging in striatum are uniquely associated with the clinical symptoms of PD, indicating that each imaging modality may be measuring a unique mechanism relevant to nigrostriatal degeneration.
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Affiliation(s)
- Jing Yang
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL,USA; Department of Neurology, West China Hospital of Sichuan University, Chengdu, China.
| | - Derek B Archer
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL,USA.
| | - Roxana G Burciu
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
| | - Martijn L T M Müller
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; University of Michigan, Morris K Udall Center of Excellence for Parkinson's Disease Research, Ann Arbor, MI, USA.
| | - Arnab Roy
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL,USA.
| | - Edward Ofori
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA.
| | - Nicolaas I Bohnen
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; University of Michigan, Morris K Udall Center of Excellence for Parkinson's Disease Research, Ann Arbor, MI, USA; Department of Neurology, University of Michigan, Ann Arbor, MI, USA; Neurology Service and GRECC, VAAAHS, Ann Arbor, MI, USA.
| | - Roger L Albin
- University of Michigan, Morris K Udall Center of Excellence for Parkinson's Disease Research, Ann Arbor, MI, USA; Department of Neurology, University of Michigan, Ann Arbor, MI, USA; Neurology Service and GRECC, VAAAHS, Ann Arbor, MI, USA.
| | - David E Vaillancourt
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL,USA; Department of Neurology, University of Florida, Gainesville, FL,USA; Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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20
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Niethammer M, Eidelberg D. Network Imaging in Parkinsonian and Other Movement Disorders: Network Dysfunction and Clinical Correlates. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 144:143-184. [DOI: 10.1016/bs.irn.2018.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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21
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Nicastro N, Manuel AL, Garibotto V, Burkhard PR, Schnider A. Consolidation of a Learned Skill Correlates with Dopamine SPECT Uptake in Early Parkinson's Disease. J Clin Neurol 2018; 14:505-512. [PMID: 30198222 PMCID: PMC6172506 DOI: 10.3988/jcn.2018.14.4.505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Basal ganglia play a pivotal role in procedural memory. However, the correlation between skill learning and striatal ¹²³I-ioflupane uptake in Parkinson's disease (PD) has not been reported previously. Our objective was to determine whether visuomotor skill learning is associated with striatal ¹²³I-ioflupane uptake in early PD. METHODS We designed a case-control study to assess learning and consolidation of a visuomotor learning task (mirrored drawing of star-shaped figures) performed on two consecutive days by early-PD patients (disease duration <2 years) and age-matched healthy subjects. Outcomes were the error rate and time per trial, as well as performance indices to assess the relative improvement on the first day (learning) and the retention on the second day (consolidation). For PD patients, we evaluated the correlation of skill learning with semiquantitative ¹²³I-ioflupane uptake. RESULTS We included 9 PD patients and 10 control subjects with the same baseline characteristics (age, male/female ratio, educational level, Mini Mental State Examination score, and Hospital Anxiety and Depression Scale score, all p>0.18) other than the score on part III of the Movement Disorders Society Unified Parkinson's Disease Rating Scale, which was higher in the PD patients (mean±SD: 15.0±10.4 vs. 1.3±1.1, p<0.001). The learning indices were the same in the two groups (p>0.5), whereas PD patients showed a lower consolidation index for the time per trial (p=0.009). Moreover, this performance was correlated with uptake in the right caudate nucleus (Spearman's rho=0.82, p=0.007) and the right striatum (Spearman's rho=0.67, p=0.049), including when multiple linear regression adjusting for the levodopa equivalent daily dose was performed (p=0.005 for the caudate nucleus and p=0.024 for the striatum). CONCLUSIONS This study provides evidence of a correlation between procedural memory impairment and striatal dopaminergic dysfunction in early PD.
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Affiliation(s)
- Nicolas Nicastro
- Division of Neurorehabilitation, Geneva University Hospitals, Geneva, Switzerland.,Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom.
| | - Aurélie L Manuel
- Laboratory of Cognitive Neurorehabilitation, Geneva University Hospitals, Geneva, Switzerland
| | - Valentina Garibotto
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospitals, Geneva, Switzerland.,Faculty of Medicine, Geneva University, Geneva, Switzlerland
| | - Pierre R Burkhard
- Faculty of Medicine, Geneva University, Geneva, Switzlerland.,Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland
| | - Armin Schnider
- Division of Neurorehabilitation, Geneva University Hospitals, Geneva, Switzerland.,Laboratory of Cognitive Neurorehabilitation, Geneva University Hospitals, Geneva, Switzerland.,Faculty of Medicine, Geneva University, Geneva, Switzlerland
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22
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Loss of inhibition in sensorimotor networks in focal hand dystonia. NEUROIMAGE-CLINICAL 2017; 17:90-97. [PMID: 29062685 PMCID: PMC5645005 DOI: 10.1016/j.nicl.2017.10.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 09/05/2017] [Accepted: 10/10/2017] [Indexed: 11/21/2022]
Abstract
Objective To investigate GABA-ergic receptor density and associated brain functional and grey matter changes in focal hand dystonia (FHD). Methods 18 patients with FHD of the right hand and 18 age and gender matched healthy volunteers (HV) participated in this study. We measured the density of GABA-A receptors using [11C] Flumazenil and perfusion using [15O] H2O. Anatomical images were also used to measure grey matter volume with voxel-based morphometry (VBM). Results In FHD patients compared to HV, the vermis VI of the right cerebellum and the left sensorimotor cortex had a decrease of Flumazenil binding potential (FMZ-BP), whereas the striatum and the lateral cerebellum did not show significant change. Bilateral inferior prefrontal cortex had increased FMZ-BP and an increase of perfusion, which correlated negatively with disease duration. Only the left sensorimotor cortex showed a decrease of grey matter volume. Interpretation Impairments of GABAergic neurotransmission in the cerebellum and the sensorimotor cortical areas could explain different aspects of loss of inhibitory control in FHD, the former being involved in maladaptive plasticity, the latter in surround inhibition. Reorganization of the inferior prefrontal cortices, part of the associative network, might be compensatory for the loss of inhibitory control in sensorimotor circuits. These findings suggest that cerebellar and cerebral GABAergic abnormalities could play a role in the functional imbalance of striato-cerebello-cortical loops in dystonia. We tested GABAergic deficiency to explain inhibitory control loss in focal dystonia. The right cerebellar vermis and left sensorimotor cortex had GABAergic deficiencies. Bilateral prefrontal cortex had an increase of GABAergic potential and activity. Prefrontal changes correlated with cerebellar deficiency and disease duration. We highlighted the importance of the cerebellum for the pathophysiology of dystonia.
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23
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Marinelli L, Quartarone A, Hallett M, Frazzitta G, Ghilardi MF. The many facets of motor learning and their relevance for Parkinson's disease. Clin Neurophysiol 2017; 128:1127-1141. [PMID: 28511125 DOI: 10.1016/j.clinph.2017.03.042] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/14/2017] [Accepted: 03/19/2017] [Indexed: 12/16/2022]
Abstract
The final goal of motor learning, a complex process that includes both implicit and explicit (or declarative) components, is the optimization and automatization of motor skills. Motor learning involves different neural networks and neurotransmitters systems depending on the type of task and on the stage of learning. After the first phase of acquisition, a motor skill goes through consolidation (i.e., becoming resistant to interference) and retention, processes in which sleep and long-term potentiation seem to play important roles. The studies of motor learning in Parkinson's disease have yielded controversial results that likely stem from the use of different experimental paradigms. When a task's characteristics, instructions, context, learning phase and type of measures are taken into consideration, it is apparent that, in general, only learning that relies on attentional resources and cognitive strategies is affected by PD, in agreement with the finding of a fronto-striatal deficit in this disease. Levodopa administration does not seem to reverse the learning deficits in PD, while deep brain stimulation of either globus pallidus or subthalamic nucleus appears to be beneficial. Finally and most importantly, patients with PD often show a decrease in retention of newly learned skill, a problem that is present even in the early stages of the disease. A thorough dissection and understanding of the processes involved in motor learning is warranted to provide solid bases for effective medical, surgical and rehabilitative approaches in PD.
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Affiliation(s)
- Lucio Marinelli
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Italy
| | - Angelo Quartarone
- IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Department of Neuroscience, University of Messina, Italy; The Fresco Institute for Parkinson's & Movement Disorders, NYU-Langone School of Medicine, New York, NY, USA
| | - Mark Hallett
- Human Motor Control Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Giuseppe Frazzitta
- Department of Parkinson's Disease and Brain Injury Rehabilitation, "Moriggia-Pelascini" Hospital, Gravedona ed Uniti, Como, Italy
| | - Maria Felice Ghilardi
- Department of Physiology, Pharmacology & Neuroscience, CUNY School of Medicine, New York, NY, USA; The Fresco Institute for Parkinson's & Movement Disorders, NYU-Langone School of Medicine, New York, NY, USA.
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24
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Interactive effects of age and multi-gene profile on motor learning and sensorimotor adaptation. Neuropsychologia 2016; 84:222-34. [PMID: 26926580 DOI: 10.1016/j.neuropsychologia.2016.02.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 02/03/2016] [Accepted: 02/17/2016] [Indexed: 01/29/2023]
Abstract
The interactive association of age and dopaminergic polymorphisms on cognitive function has been studied extensively. However, there is limited research on whether age interacts with the association between genetic polymorphisms and motor learning. We examined a group of young and older adults' performance in three motor tasks: explicit sequence learning, visuomotor adaptation, and grooved pegboard. We assessed whether individuals' motor learning and performance were associated with their age and genotypes. We selected three genetic polymorphisms: Catechol-O-Methyl Transferase (COMT val158met) and Dopamine D2 Receptor (DRD2 G>T), which are involved with dopaminergic regulation, and Brain Derived Neurotrophic Factor (BDNF val66met) that modulates neuroplasticity and has been shown to interact with dopaminergic genes. Although the underlying mechanisms of the function of these three genotypes are different, the high performance alleles of each have been linked to better learning and performance. We created a composite polygene score based on the Number of High Performance Alleles (NHPA) that each individual carried. We found several associations between genetic profile, motor performance, and sensorimotor adaptation. More importantly, we found that this association varies with age, task type, and engagement of implicit versus explicit learning processes.
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25
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Choi H, Cheon GJ, Kim HJ, Choi SH, Kim YI, Kang KW, Chung JK, Kim EE, Lee DS. Gray matter correlates of dopaminergic degeneration in Parkinson's disease: A hybrid PET/MR study using (18) F-FP-CIT. Hum Brain Mapp 2016; 37:1710-21. [PMID: 26846350 DOI: 10.1002/hbm.23130] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 01/14/2016] [Accepted: 01/20/2016] [Indexed: 01/15/2023] Open
Abstract
Dopaminergic degeneration is a hallmark of Parkinson's disease (PD), which causes various symptoms affected by corticostriatal circuits. So far, the relationship between cortical changes and dopamine loss in the striatum is unclear. Here, we evaluate the gray matter (GM) changes in accordance with striatal dopaminergic degeneration in PD using hybrid PET/MR. Sixteen patients with idiopathic PD underwent (18) F-FP-CIT PET/MR. To measure dopaminergic degeneration in PD, binding ratio (BR) of dopamine transporter in striatum was evaluated by (18) F-FP-CIT. Voxel-based morphometry (VBM) was used to evaluate GM density. We obtained voxelwise correlation maps of GM density according to the striatal BR. Voxel-by-voxel correlation between BR maps and GM density maps was done to evaluate region-specific correlation of striatal dopaminergic degeneration. There was a trend of positive correlation between striatal BR and GM density in the cerebellum, parahippocampal gyri, and frontal cortex. A trend of negative correlation between striatal BR and GM density in the medial occipital cortex was found. Voxel-by-voxel correlation revealed that the positive correlation was mainly dependent on anterior striatal BR, while posterior striatal BR mostly showed negative correlation with GM density in occipital and temporal cortices. Decreased GM density related to anterior striatal dopaminergic degeneration might demonstrate degeneration of dopaminergic nonmotor circuits. Furthermore, the negative correlation could be related to the motor circuits of posterior striatum. Our integrated PET/MR study suggests that the widespread structural progressive changes in PD could denote the cortical functional correlates of the degeneration of striatal dopaminergic circuits. Hum Brain Mapp 37:1710-1721, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Hongyoon Choi
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea
| | - Gi Jeong Cheon
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.,Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Han-Joon Kim
- Department of Neurology and Movement Disorder Center, Seoul National University Hospital, Seoul, Korea
| | - Seung Hong Choi
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.,Center for Nanoparticle Research, Institute for Basic Science, and School of Chemical and Biological Engineering, Seoul National University, Seoul, Korea
| | - Yong-Il Kim
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.,Department of Molecular Medicine and Biopharmaceutical Science, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
| | - Keon Wook Kang
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.,Cancer Research Institute, Seoul National University, Seoul, Korea
| | - June-Key Chung
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.,Cancer Research Institute, Seoul National University, Seoul, Korea
| | - E Edmund Kim
- Department of Molecular Medicine and Biopharmaceutical Science, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea.,Department of Radiological Sciences, University of California, Irvine, CA
| | - Dong Soo Lee
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.,Department of Molecular Medicine and Biopharmaceutical Science, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
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26
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Onset-related subtypes of Parkinson's disease differ in the patterns of striatal dopaminergic dysfunction: A positron emission tomography study. Parkinsonism Relat Disord 2015; 21:1448-53. [DOI: 10.1016/j.parkreldis.2015.10.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 10/19/2015] [Accepted: 10/25/2015] [Indexed: 11/23/2022]
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27
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Sang L, Zhang J, Wang L, Zhang J, Zhang Y, Li P, Wang J, Qiu M. Alteration of Brain Functional Networks in Early-Stage Parkinson's Disease: A Resting-State fMRI Study. PLoS One 2015; 10:e0141815. [PMID: 26517128 PMCID: PMC4627652 DOI: 10.1371/journal.pone.0141815] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 10/13/2015] [Indexed: 01/13/2023] Open
Abstract
Although alterations of topological organization have previously been reported in the brain functional network of Parkinson's disease (PD) patients, the topological properties of the brain network in early-stage PD patients who received antiparkinson treatment are largely unknown. This study sought to determine the topological characteristics of the large-scale functional network in early-stage PD patients. First, 26early-stage PD patients (Hoehn and Yahr stage:1-2) and 30 age-matched normal controls were scanned using resting-state functional MRI. Subsequently, graph theoretical analysis was employed to investigate the abnormal topological configuration of the brain network in early-stage PD patients. We found that both the PD patient and control groups showed small-world properties in their functional brain networks. However, compared with the controls, the early-stage PD patients exhibited abnormal global properties, characterized by lower global efficiency. Moreover, the modular structure and the hub distribution were markedly altered in early-stage PD patients. Furthermore, PD patients exhibited increased nodal centrality, primarily in the bilateral pallidum, the inferior parietal lobule, and the medial superior frontal gyrus, and decreased nodal centrality in the caudate nucleus, the supplementary motor areas, the precentral gyrus, and the middle frontal gyrus. There were significant negative correlations between the Unified Parkinson Disease Rating Scale motor scores and nodal centralities of superior parietal gyrus. These results suggest that the topological organization of the brain functional network was altered in early-stage PD patients who received antiparkinson treatment, and we speculated that the antiparkinson treatment may affect the efficiency of the brain network to effectively relieve clinical symptoms of PD.
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Affiliation(s)
- Linqiong Sang
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jiuquan Zhang
- Department of Radiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Li Wang
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jingna Zhang
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Ye Zhang
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Pengyue Li
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jian Wang
- Department of Radiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Mingguo Qiu
- Department of Medical Imaging, College of Biomedical Engineering, Third Military Medical University, Chongqing, China
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28
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Meles SK, Tang CC, Teune LK, Dierckx RA, Dhawan V, Mattis PJ, Leenders KL, Eidelberg D. Abnormal metabolic pattern associated with cognitive impairment in Parkinson's disease: a validation study. J Cereb Blood Flow Metab 2015; 35:1478-84. [PMID: 26058693 PMCID: PMC4640325 DOI: 10.1038/jcbfm.2015.112] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/23/2015] [Accepted: 04/27/2015] [Indexed: 11/09/2022]
Abstract
Cognitive deficits in Parkinson's disease (PD) have been associated with a specific metabolic covariance pattern. Although the expression of this PD cognition-related pattern (PDCP) correlates with neuropsychological performance, it is not known whether the PDCP topography is reproducible across PD populations. We therefore sought to identify a PDCP topography in a new sample comprised of 19 Dutch PD subjects. Network analysis of metabolic scans from these individuals revealed a significant PDCP that resembled the original network topography. Expression values for the new PDCP correlated (P=0.001) with executive dysfunction on the Frontal Assessment Battery (FAB). Subject scores for the new PDCP correlated (P<0.001) with corresponding values for the original pattern, which also correlated (P<0.005) with FAB scores in this patient group. For further validation, subject scores for the new PDCP were computed in an independent group of 86 American PD patients. In this cohort, subject scores for the new and original PDCP topographies were closely correlated (P<0.001); significant correlations between pattern expression and cognitive performance (P<0.05) were observed for both PDCP topographies. These findings suggest that the PDCP is a replicable imaging marker of PD cognitive dysfunction.
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Affiliation(s)
- Sanne K Meles
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Chris C Tang
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Laura K Teune
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Rudi A Dierckx
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Vijay Dhawan
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Paul J Mattis
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Klaus L Leenders
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - David Eidelberg
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, NY, USA
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29
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Holtbernd F, Ma Y, Peng S, Schwartz F, Timmermann L, Kracht L, Fink GR, Tang CC, Eidelberg D, Eggers C. Dopaminergic correlates of metabolic network activity in Parkinson's disease. Hum Brain Mapp 2015; 36:3575-85. [PMID: 26037537 DOI: 10.1002/hbm.22863] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 04/27/2015] [Accepted: 05/18/2015] [Indexed: 11/06/2022] Open
Abstract
Parkinson's disease (PD) is associated with distinct metabolic covariance patterns that relate to the motor and cognitive manifestations of the disorder. It is not known, however, how the expression of these patterns relates to measurements of nigrostriatal dopaminergic activity from the same individuals. To explore these associations, we studied 106 PD subjects who underwent cerebral PET with both (18) F-fluorodeoxyglucose (FDG) and (18) F-fluoro-L-dopa (FDOPA). Expression values for the PD motor- and cognition-related metabolic patterns (PDRP and PDCP, respectively) were computed for each subject; these measures were correlated with FDOPA uptake on a voxel-by-voxel basis. To explore the relationship between dopaminergic function and local metabolic activity, caudate and putamen FDOPA PET signal was correlated voxel-wise with FDG uptake over the entire brain. PDRP expression correlated with FDOPA uptake in caudate and putamen (P < 0.001), while PDCP expression correlated with uptake in the anterior striatum (P < 0.001). While statistically significant, the correlations were only of modest size, accounting for less than 20% of the overall variation in these measures. After controlling for PDCP expression, PDRP correlations were significant only in the posterior putamen. Of note, voxel-wise correlations between caudate/putamen FDOPA uptake and whole-brain FDG uptake were significant almost exclusively in PDRP regions. Overall, the data indicate that PDRP and PDCP expression correlates significantly with PET indices of presynaptic dopaminergic functioning obtained in the same individuals. Even so, the modest size of these correlations suggests that in PD patients, individual differences in network activity cannot be explained solely by nigrostriatal dopamine loss.
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Affiliation(s)
- Florian Holtbernd
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, New York, 11030
| | - Yilong Ma
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, New York, 11030
| | - Shichun Peng
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, New York, 11030
| | - Frank Schwartz
- Department of Neurology, University of Cologne, Cologne, Germany
| | - Lars Timmermann
- Department of Neurology, University of Cologne, Cologne, Germany
| | - Lutz Kracht
- Max-Planck Institute for Neurological Research, Cologne, Germany
| | - Gereon R Fink
- Department of Neurology, University of Cologne, Cologne, Germany.,Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Jülich Research Center, Jülich, Germany
| | - Chris C Tang
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, New York, 11030
| | - David Eidelberg
- Center for Neurosciences, The Feinstein Institute for Medical Research, Manhasset, New York, 11030
| | - Carsten Eggers
- Department of Neurology, University of Cologne, Cologne, Germany.,Max-Planck Institute for Neurological Research, Cologne, Germany
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30
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Cohen ML, Aita S, Mari Z, Brandt J. The Unique and Combined Effects of Apathy and Depression on Cognition in Parkinson’s Disease. JOURNAL OF PARKINSONS DISEASE 2015; 5:351-9. [DOI: 10.3233/jpd-140484] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Matthew L. Cohen
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephen Aita
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Psychology, Loyola University of Maryland, Baltimore, MD, USA
| | - Zoltan Mari
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jason Brandt
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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31
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Sequential movement skill in Parkinson's disease: A state-of-the-art. Cortex 2015; 65:102-12. [DOI: 10.1016/j.cortex.2015.01.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 12/17/2014] [Accepted: 01/08/2015] [Indexed: 11/23/2022]
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32
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Matsumoto M. Dopamine signals and physiological origin of cognitive dysfunction in Parkinson's disease. Mov Disord 2015; 30:472-83. [PMID: 25773863 DOI: 10.1002/mds.26177] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 01/08/2015] [Accepted: 01/19/2015] [Indexed: 11/12/2022] Open
Abstract
The pathological hallmark of Parkinson's disease (PD) is the degeneration of midbrain dopamine neurons. Cognitive dysfunction is a feature of PD patients even at the early stages of the disease. Electrophysiological studies on dopamine neurons in awake animals provide contradictory accounts of the role of dopamine. These studies have established that dopamine neurons convey a unique signal associated with rewards rather than cognitive functions. Emphasizing their role in reward processing leads to difficulty in developing hypothesis as to how cognitive impairments in PD are associated with the degeneration of dopamine circuitry. A hint to resolve this contradiction came from recent electrophysiological studies reporting that dopamine neurons transmit more diverse signals than previously thought. These studies suggest that dopamine neurons are divided into at least two functional subgroups, one signaling "motivational value" and the other signaling "salience." The former subgroup fits well with the conventional reward theory, whereas the latter subgroup has been shown to transmit signals related to salient but non-rewarding experiences such as aversive stimulations and cognitively demanding situations. This article reviews recent advances in understanding the non-reward functions of dopamine, and then discusses the possibility that cognitive dysfunction in PD is at least partially caused by the degeneration of the dopamine neuron subgroup signaling the salience of events in the environment.
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Affiliation(s)
- Masayuki Matsumoto
- Laboratory of Cognitive and Behavioral Neuroscience, Division of Biomedical Science, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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33
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Lee E, Lee JE, Yoo K, Hong JY, Oh J, Sunwoo MK, Kim JS, Jeong Y, Lee PH, Sohn YH, Kang SY. Neural correlates of progressive reduction of bradykinesia in de novo Parkinson's disease. Parkinsonism Relat Disord 2014; 20:1376-81. [PMID: 25304859 DOI: 10.1016/j.parkreldis.2014.09.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 09/20/2014] [Accepted: 09/22/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND A progressive reduction in the speed and amplitude of repetitive action is an essential component of bradykinesia, which is called sequence effect (SE). Because SE is specific to Parkinson's disease (PD) and is suggested to be associated with motor arrest, its features are of great interest. The aim of this study was, for the first time, to find the neural correlates of SE and to demonstrate whether dopaminergic deficit is correlated with SE. METHODS We enrolled 12 patients with de novo PD at a tertiary referral hospital. Correlations between SE severity and alterations in gray and white matter were studied. The association between severity of the SE and striatal dopaminergic deficits was also analyzed. RESULTS There was a significant negative correlation between the volumetric changes in the anterior cingulate cortex (ACC) and the inferior semilunar lobule of the cerebellum and the degree of SE. There was a significant correlation between the long association fibers (the superior longitudinal fasciculus, the uncinate fasciculus, and the inferior fronto-occipital fasciculus) connecting the frontal lobes to the temporal, parietal, and occipital lobes and SE. There was a significant negative correlation between SE in the more affected hand and the caudate dopamine transporter binding in the more affected hemisphere. CONCLUSIONS Our results suggest that the ACC and the cerebellum (inferior semilunar lobule) are associated with the severity of SE. Taken together with DTI findings, the present study proposes that ACC may have an important role. Our data show that the caudate dopaminergic activity may be related to SE.
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Affiliation(s)
- Eeksung Lee
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea; Laboratory for Cognitive Neuroscience and Neuroimaging, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Ji Eun Lee
- Department of Neurology and Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kwangsun Yoo
- Laboratory for Cognitive Neuroscience and Neuroimaging, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Jin Yong Hong
- Department of Neurology and Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Jungsu Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mun Kyung Sunwoo
- Department of Neurology and Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Neurology, Bundang Jesaeng Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jae Seung Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong Jeong
- Laboratory for Cognitive Neuroscience and Neuroimaging, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Phil Hyu Lee
- Department of Neurology and Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Sohn
- Department of Neurology and Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Suk Yun Kang
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, 7, Keunjaebong-gil, Hwaseong-si, Gyeonggi-do 445-907, Republic of Korea.
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34
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Caproni S, Muti M, Di Renzo A, Principi M, Caputo N, Calabresi P, Tambasco N. Subclinical visuospatial impairment in Parkinson's disease: the role of Basal Ganglia and limbic system. Front Neurol 2014; 5:152. [PMID: 25157239 PMCID: PMC4128219 DOI: 10.3389/fneur.2014.00152] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 07/25/2014] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Visual perception deficits are a recurrent manifestation in Parkinson's disease (PD). Recently, structural abnormalities of fronto-parietal areas and subcortical regions, implicated in visual stimuli analysis, have been observed in PD patients with cognitive decline and visual hallucinations. The aim of the present study was to investigate the salient aspects of visual perception in cognitively unimpaired PD patients. METHODS Eleven right-handed non-demented right-sided onset PD patients without visuospatial impairment or hallucinations and 11 healthy controls were studied with functional magnetic resonance imaging while performing a specific visuoperceptual/visuospatial paradigm that allowed to highlight the specific process underlying visuospatial judgment. RESULTS Significant changes in both cortical areas and subcortical regions involved in visual stimuli processing were observed. In particular, PD patients showed a reduced activation for the right insula, left putamen, bilateral caudate, and right hippocampus, as well as an over-activation of the right dorso-lateral prefrontal and of the posterior parietal cortices, particularly in the right hemisphere. CONCLUSIONS We found that both loss of efficiency and compensatory mechanisms occur in PD patients, providing further insight into the pathophysiological role of the functional alterations of basal ganglia and limbic structures in the impairment of visuoperceptual and visuospatial functions observed in PD.
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Affiliation(s)
- Stefano Caproni
- Clinica Neurologica, Azienda Ospedaliera - Università di Perugia , Italy
| | - Marco Muti
- Servizio di Fisica Sanitaria, Azienda Ospedaliera di Terni , Italy
| | - Antonio Di Renzo
- Servizio di Fisica Sanitaria, Azienda Ospedaliera di Terni , Italy
| | - Massimo Principi
- Servizio di Neuroradiologia, Azienda Ospedaliera di Terni , Italy
| | - Nevia Caputo
- Servizio di Neuroradiologia, Azienda Ospedaliera di Terni , Italy
| | - Paolo Calabresi
- Clinica Neurologica, Azienda Ospedaliera - Università di Perugia , Italy ; I.R.C.C.S. - Fondazione S. Lucia - Roma , Italy
| | - Nicola Tambasco
- Clinica Neurologica, Azienda Ospedaliera - Università di Perugia , Italy
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Kumakura Y, Gjedde A, Caprioli D, Kienast T, Beck A, Plotkin M, Schlagenhauf F, Vernaleken I, Gründer G, Bartenstein P, Heinz A, Cumming P. Increased turnover of dopamine in caudate nucleus of detoxified alcoholic patients. PLoS One 2013; 8:e73903. [PMID: 24040111 PMCID: PMC3770672 DOI: 10.1371/journal.pone.0073903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 07/25/2013] [Indexed: 12/02/2022] Open
Abstract
A previous study of the DOPA decarboxylase substrate 6-[18F]fluoro-L-DOPA (FDOPA) with positron emission tomography (PET) detected no difference of the net blood-brain transfer rate (Kinapp) between detoxified alcoholic patients and healthy controls. Instead, the study revealed an inverse correlation between Kinapp in left ventral striatum and alcohol craving scores. To resolve the influx and efflux phases of radiolabeled molecules, we independently estimated the unidirectional blood-brain FDOPA clearance rate (K) and the washout rate of [18F]fluorodopamine and its deaminated metabolites (kloss), and we also calculated the total distribution volume of decarboxylated metabolites and unmetabolized FDOPA as a steady-state index of the dopamine storage capacity (Vd) in brain. The craving scores in the 12 alcoholics correlated positively with the rate of loss (kloss) in the left ventral striatum. We conclude that craving is most pronounced in the individuals with relatively rapid dopamine turnover in the left ventral striatum. The blood-brain clearance rate (K), corrected for subsequent loss of radiolabeled molecules from brain, was completely normal throughout the brain of the alcoholics, in whom the volume of distribution (Vd) was found to be significantly lower in the left caudate nucleus. The magnitude of Vd in the left caudate head was reduced by 43% relative to the 16 controls, consistent with a 58% increase of kloss. We interpret the findings as indicating that a trait for rapid dopamine turnover in the ventral striatum subserves craving and reward-dependence, leading to an acquired state of increased dopamine turnover in the dorsal striatum of detoxified alcoholic patients.
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Affiliation(s)
- Yoshitaka Kumakura
- Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Center for Functionally Integrative Neuroscience, Aarhus University, Aarhus C, Denmark
- Department of Nuclear Medicine, Tokyo University, Tokyo, Japan
- * E-mail:
| | - Albert Gjedde
- Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Center for Functionally Integrative Neuroscience, Aarhus University, Aarhus C, Denmark
| | - Daniele Caprioli
- Department of Experimental Psychology, Cambridge University, Cambridge, United Kingdom
| | - Thorsten Kienast
- Department of Psychiatry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Anne Beck
- Department of Psychiatry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Michail Plotkin
- Department of Nuclear Medicine, Charite - Universitätsmedizin Berlin, Berlin, Germany
| | | | - Ingo Vernaleken
- Department of Psychiatry, University of Aachen, Aachen, Germany
| | - Gerhard Gründer
- Department of Psychiatry, University of Aachen, Aachen, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, Ludwig Maximilian University of Munich, Munich, Germany
| | - Andreas Heinz
- Department of Psychiatry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Paul Cumming
- Department of Nuclear Medicine, Ludwig Maximilian University of Munich, Munich, Germany
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Hall LM, Brauer SG, Horak F, Hodges PW. The effect of Parkinson's disease and levodopa on adaptation of anticipatory postural adjustments. Neuroscience 2013; 250:483-92. [PMID: 23867768 DOI: 10.1016/j.neuroscience.2013.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 06/18/2013] [Accepted: 07/06/2013] [Indexed: 11/28/2022]
Abstract
Postural support alters anticipatory postural adjustments (APAs). Efficient adaptation to changes in postural support in reactive and centrally initiated postural synergies is impaired in Parkinson's disease (PD). This study examined whether APAs are affected differently by familiar and novel supports in people with PD, ON and OFF levodopa. The effect of PD and levodopa on the ability to immediately adapt APAs to changes in support and refine with practice was also investigated. Fourteen people with PD and 14 healthy control participants performed 20 single rapid leg lift tasks in four support conditions: unsupported, bilateral handgrip (familiar), bite plate (novel) and a combined handgrip+bite plate condition. APAs, identified from force plate data, were characterized by an increase in the vertical ground reaction force under the lifted leg as a result of a shift of weight toward the stance limb. Results showed the ability to incorporate familiar and novel external supports into the postural strategy was preserved in PD. Controls and PD patients in the OFF state further refined the postural strategy with practice as evidenced by changes in amplitude of vertical ground reaction forces and forces applied to support apparatus within conditions between the initial and final trials. In the ON state, people with PD failed to refine the use of postural supports in any condition. The results suggest that immediate postural adaptation is intact in people with PD and unaffected by levodopa administration but the ability to refine postural adaptations with task experience is compromised by dopamine therapy.
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Affiliation(s)
- L M Hall
- The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, St. Lucia, Qld 4072, Australia
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37
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Joint principles of motor and cognitive dysfunction in Parkinson’s disease. Neuropsychologia 2013; 51:1417-25. [DOI: 10.1016/j.neuropsychologia.2013.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 04/19/2013] [Accepted: 04/20/2013] [Indexed: 11/19/2022]
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Abstract
The use of functional imaging in neurodegenerative diseases has increased in recent years, with applications in research into the underlying pathophysiology, aiding in diagnosis, or evaluating new treatments. In Parkinson's disease (PD), these imaging methods have expanded our understanding of the disease beyond dopaminergic deficits. Moreover, functional imaging methods have described alterations in functional networks relating not only to the motor symptoms, but also to many nonmotor features of PD, such as cognitive dysfunction. From a clinical viewpoint, functional imaging methods can assist in monitoring disease progression, such as in the context of clinical trials, and holds the potential to aid in early diagnosis of PD and differentiation from other parkinsonian disorders.
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Herrojo Ruiz M, Brücke C, Nikulin VV, Schneider GH, Kühn AA. Beta-band amplitude oscillations in the human internal globus pallidus support the encoding of sequence boundaries during initial sensorimotor sequence learning. Neuroimage 2013; 85 Pt 2:779-93. [PMID: 23711534 DOI: 10.1016/j.neuroimage.2013.05.085] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/14/2013] [Accepted: 05/19/2013] [Indexed: 11/17/2022] Open
Abstract
Sequential behavior characterizes both simple everyday tasks, such as getting dressed, and complex skills, such as music performance. The basal ganglia (BG) play an important role in the learning of motor sequences. To study the contribution of the human BG to the initial encoding of sequence boundaries, we recorded local field potentials in the sensorimotor area of the internal globus pallidus (GPi) during the early acquisition of sensorimotor sequences in patients undergoing deep brain stimulation for dystonia. We demonstrated an anticipatory modulation of pallidal beta-band neuronal oscillations that was specific to sequence boundaries, as compared to within-sequence elements, and independent of both the movement parameters and the initiation/termination of ongoing movement. The modulation at sequence boundaries emerged with training, in parallel with skill learning, and correlated with the degree of long-range temporal correlations (LRTC) in the dynamics of ongoing beta-band amplitude oscillations. The implication is that LRTC of beta-band oscillations in the sensorimotor GPi might facilitate the emergence of beta power modulations by the sequence boundaries in parallel with sequence learning. Taken together, the results reveal the oscillatory mechanisms in the human BG that contribute at an initial learning phase to the hierarchical organization of sequential behavior as reflected in the formation of boundary-delimited representations of action sequences.
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Affiliation(s)
- María Herrojo Ruiz
- Department of Neurology, Campus Virchow, Charité-University Medicine Berlin, Berlin 13353, Germany.
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Niethammer M, Tang CC, Ma Y, Mattis PJ, Ko JH, Dhawan V, Eidelberg D. Parkinson's disease cognitive network correlates with caudate dopamine. Neuroimage 2013; 78:204-9. [PMID: 23578575 DOI: 10.1016/j.neuroimage.2013.03.070] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 03/20/2013] [Accepted: 03/27/2013] [Indexed: 11/27/2022] Open
Abstract
Prior evidence has suggested a link between caudate dopaminergic functioning and cognition in Parkinson's disease (PD). In this dual tracer study we analyzed the relationship between nigrostriatal dopaminergic dysfunction and the expression of the previously validated PD cognition-related metabolic pattern (PDCP). In this study, 17 non-demented PD patients underwent positron emission tomography (PET) imaging with [(18)F]-fluorodeoxyglucose to measure PDCP expression, and [(18)F]-fluoropropyl-β-CIT (FPCIT) to measure dopamine transporter (DAT) binding. Automated voxel-by-voxel searches of the FPCIT PET volumes were performed to identify regions in which DAT binding significantly correlated with PDCP expression values. The findings were validated using prespecified anatomical regions-of-interest (ROIs). Voxel-wise interrogation of the FPCIT PET scans revealed a single significant cluster in which DAT binding correlated with PDCP expression (p<0.05, corrected). This cluster was localized to the left caudate nucleus; an analogous correlation (r=-0.63, p<0.01) was also present in the "mirror" region of the right hemisphere. These findings were confirmed by the presence of a significant correlation (r=-0.67, p<0.005) between PDCP expression and DAT binding in caudate ROIs, which survived adjustment for age, disease duration, and clinical severity ratings. Correlation between caudate DAT binding and subject expression of the PD motor-related metabolic pattern was not significant (p>0.21). In summary, this study demonstrates a significant relationship between loss of dopaminergic input to the caudate nucleus and the expression of a cognition-related disease network in unmedicated PD patients. These baseline measures likely function in concert to determine the cognitive effects of dopaminergic therapy in PD.
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Affiliation(s)
- Martin Niethammer
- Center for Neurosciences, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030, USA.
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Abstract
Brain aging is characterized by considerable heterogeneity, including varying degrees of dysfunction in specific brain systems, notably a medial temporal lobe memory system and a frontostriatal executive system. These same systems are also affected by neurodegenerative diseases. Recent work using techniques for presymptomatic detection of disease in cognitively normal older people has shown that some of the late life alterations in cognition, neural structure, and function attributed to aging probably reflect early neurodegeneration. However, it has become clear that these same brain systems are also vulnerable to aging in the absence of even subtle disease. Thus, fundamental systemic limitations appear to confer vulnerability of these neural systems to a variety of insults, including those recognized as typical disease and those that are attributed to age. By focusing on the fundamental causes of neural system vulnerability, the prevention or treatment of a wide range of late-life neural dysfunction might be possible.
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Affiliation(s)
- William Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720-3190, USA.
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Abstract
PURPOSE OF REVIEW Different neuroimaging techniques have been used to identify disease-specific functional brain networks in Parkinson's disease, atypical parkinsonian syndromes, and other movement disorders. This review highlights recent advances in network imaging and its clinical applications in movement disorders. RECENT FINDINGS Positron emission tomography and functional MRI studies have revealed distinct, abnormal metabolic brain networks and altered interregional connectivity in Parkinson's disease and related movement disorders. Network-level functional changes have been found to correlate with disease severity and progression. Moreover, network-based categorization algorithms are proving useful in enhancing the accuracy of clinical diagnosis in patients with early symptoms and in providing objective evidence of treatment response. SUMMARY Although in most movement disorders the predominant histopathology involves the basal ganglia, including the substantia nigra, functional changes in relevant neural circuits are not limited to these structures. The current advances in functional brain imaging have contributed to a better pathophysiological understanding of movement disorders as complex alterations of widespread functional brain networks. The promising findings from recent studies may help to establish new and reliable biomarkers to monitor disease progression and treatment effects in future clinical trials.
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Ceravolo R, Pagni C, Tognoni G, Bonuccelli U. The epidemiology and clinical manifestations of dysexecutive syndrome in Parkinson's disease. Front Neurol 2012; 3:159. [PMID: 23162529 PMCID: PMC3497716 DOI: 10.3389/fneur.2012.00159] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Accepted: 10/21/2012] [Indexed: 11/13/2022] Open
Abstract
This mini-review summarizes the evidence of the cognitive and behavioral features of dysexecutive syndrome in Parkinson’s disease (PD). Deficits in response inhibition, set-shifting, mental flexibility, and strategy have been frequently described from the earliest stages of PD, although there are inconsistencies in study findings due to the complexity of the executive function (EF) construct and methodological limitations. Behavioral disorders of PD, e.g., apathy, distractibility, perseverative behavior, and impulse-control disorders, may be viewed as the other side of dysexecutive syndrome. Despite the interrelationship between the cognitive and behavioral domains, some reports reveal that the two syndromes may be dissociated, suggesting that both aspects must be clinically assessed. EFs are widely associated with the prefrontal areas, although dysexecutive syndrome may be observed in patients with damage to other brain regions. EFs drive numerous abilities essential to daily life, such as prospective remembering and language comprehension, which may be impaired in PD subjects. Considering the impact of dysexecutive syndrome on independence and quality of life, early detection of executive impairment is crucial in the management of PD.
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Niethammer M, Eidelberg D. Metabolic brain networks in translational neurology: concepts and applications. Ann Neurol 2012; 72:635-47. [PMID: 22941893 DOI: 10.1002/ana.23631] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 04/16/2012] [Accepted: 04/18/2012] [Indexed: 01/13/2023]
Abstract
Over the past 2 decades, functional imaging techniques have become commonplace in the study of brain disease. Nevertheless, very few validated analytical methods have been developed specifically to identify and measure systems-level abnormalities in living patients. Network approaches are particularly relevant for translational research in the neurodegenerative disorders, which often involve stereotyped abnormalities in brain organization. In recent years, spatial covariance mapping, a multivariate analytical tool applied mainly to metabolic images acquired in the resting state, has provided a useful means of objectively assessing brain disorders at the network level. By quantifying network activity in individual subjects on a scan-by-scan basis, this technique makes it possible to objectively assess disease progression and the response to treatment on a system-wide basis. To illustrate the utility of network imaging in neurological research, we review recent applications of this approach in the study of Parkinson disease and related movement disorders. Novel uses of the technique are discussed, including the prediction of cognitive responses to dopaminergic therapy, evaluation of the effects of placebo treatment on network activity, assessment of preclinical disease progression, and the use of automated pattern-based algorithms to enhance diagnostic accuracy.
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Affiliation(s)
- Martin Niethammer
- Center for Neurosciences, Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
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45
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Wallace DG, Winter SS, Metz GA. Serial pattern learning during skilled walking. J Integr Neurosci 2012; 11:17-32. [DOI: 10.1142/s0219635212500021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 09/09/2011] [Indexed: 11/18/2022] Open
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46
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Ko JH, Antonelli F, Monchi O, Ray N, Rusjan P, Houle S, Lang AE, Christopher L, Strafella AP. Prefrontal dopaminergic receptor abnormalities and executive functions in Parkinson's disease. Hum Brain Mapp 2012; 34:1591-604. [PMID: 22331665 DOI: 10.1002/hbm.22006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 11/15/2011] [Accepted: 11/15/2011] [Indexed: 11/06/2022] Open
Abstract
The main pattern of cognitive impairments seen in early to moderate stages of Parkinson's disease (PD) includes deficits of executive functions. These nonmotor complications have a significant impact on the quality of life and day-to-day activities of PD patients and are not effectively managed by current therapies, a problem which is almost certainly due to the fact that the disease extends beyond the nigrostriatal system. To investigate the role of extrastriatal dopamine in executive function in PD, PD patients and a control group were studied with positron-emission-tomography using a high-affinity dopamine D2/D3 receptor tracer, [(11) C]FLB-457. All participants were scanned twice while performing an executive task and a control task. Patients were off medication for at least 12 h. The imaging analysis revealed that parkinsonian patients had lower [(11) C]FLB-457 binding than control group independently of task conditions across different brain regions. Cognitive assessment measures were positively correlated with [(11) C]FLB-457 binding in the bilateral dorsolateral prefrontal cortex and anterior cingulate cortex only in control group, but not in PD patients. Within the control group, during the executive task (as compared to control task), there was evidence of reduced [(11) C]FLB-457 binding (indicative of increased dopamine release) in the right orbitofrontal cortex. In contrast, PD patients did not show any reduction in binding during the executive task (as compared with control task). These findings suggest that PD patients present significant abnormalities in extrastriatal dopamine associated with executive processing. These observations provide important insights on the pathophysiology of cognitive dysfunction in PD.
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Affiliation(s)
- Ji Hyun Ko
- Research Imaging Centre, Centre for Addiction and Mental Health, University of Toronto, Ontario, Canada
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47
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Functional brain networks and abnormal connectivity in the movement disorders. Neuroimage 2011; 62:2261-70. [PMID: 22206967 DOI: 10.1016/j.neuroimage.2011.12.021] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 11/09/2011] [Accepted: 12/13/2011] [Indexed: 01/18/2023] Open
Abstract
Clinical manifestations of movement disorders, such as Parkinson's disease (PD) and dystonia, arise from neurophysiological changes within the cortico-striato-pallidothalamocortical (CSPTC) and cerebello-thalamo-cortical (CbTC) circuits. Neuroimaging techniques that probe connectivity within these circuits can be used to understand how these disorders develop as well as identify potential targets for medical and surgical therapies. Indeed, network analysis of (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET) has identified abnormal metabolic networks associated with the cardinal motor symptoms of PD, such as akinesia and tremor, as well as PD-related cognitive dysfunction. More recent task-based and resting state functional magnetic resonance imaging studies have reproduced several of the altered connectivity patterns identified in these abnormal PD-related networks. A similar network analysis approach in dystonia revealed abnormal disease related metabolic patterns in both manifesting and non-manifesting carriers of dystonia mutations. Other multimodal imaging approaches using magnetic resonance diffusion tensor imaging in patients with primary genetic dystonia suggest abnormal connectivity within the CbTC circuits mediate the clinical manifestations of this inherited neurodevelopmental disorder. Ongoing developments in functional imaging and future studies in early patients are likely to enhance our understanding of these movement disorders and guide novel targets for future therapies.
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Weintraub D, Dietz N, Duda JE, Wolk DA, Doshi J, Xie SX, Davatzikos C, Clark CM, Siderowf A. Alzheimer's disease pattern of brain atrophy predicts cognitive decline in Parkinson's disease. Brain 2011; 135:170-80. [PMID: 22108576 DOI: 10.1093/brain/awr277] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Research suggests overlap in brain regions undergoing neurodegeneration in Parkinson's and Alzheimer's disease. To assess the clinical significance of this, we applied a validated Alzheimer's disease-spatial pattern of brain atrophy to patients with Parkinson's disease with a range of cognitive abilities to determine its association with cognitive performance and decline. At baseline, 84 subjects received structural magnetic resonance imaging brain scans and completed the Dementia Rating Scale-2, and new robust and expanded Dementia Rating Scale-2 norms were applied to cognitively classify participants. Fifty-nine non-demented subjects were assessed annually with the Dementia Rating Scale-2 for two additional years. Magnetic resonance imaging scans were quantified using both a region of interest approach and voxel-based morphometry analysis, and a method for quantifying the presence of an Alzheimer's disease spatial pattern of brain atrophy was applied to each scan. In multivariate models, higher Alzheimer's disease pattern of atrophy score was associated with worse global cognitive performance (β = -0.31, P = 0.007), including in non-demented patients (β = -0.28, P = 0.05). In linear mixed model analyses, higher baseline Alzheimer's disease pattern of atrophy score predicted long-term global cognitive decline in non-demented patients [F(1, 110) = 9.72, P = 0.002], remarkably even in those with normal cognition at baseline [F(1, 80) = 4.71, P = 0.03]. In contrast, in cross-sectional and longitudinal analyses there was no association between region of interest brain volumes and cognitive performance in patients with Parkinson's disease with normal cognition. These findings support involvement of the hippocampus and parietal-temporal cortex with cognitive impairment and long-term decline in Parkinson's disease. In addition, an Alzheimer's disease pattern of brain atrophy may be a preclinical biomarker of cognitive decline in Parkinson's disease.
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Affiliation(s)
- Daniel Weintraub
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3339, USA.
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49
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Beeler JA. Preservation of function in Parkinson's disease: what's learning got to do with it? Brain Res 2011; 1423:96-113. [PMID: 22000081 DOI: 10.1016/j.brainres.2011.09.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 08/06/2011] [Accepted: 09/20/2011] [Indexed: 01/16/2023]
Abstract
Dopamine denervation gives rise to abnormal corticostriatal plasticity; however, its role in the symptoms and progression of Parkinson's disease (PD) has not been articulated or incorporated into current clinical models. The 'integrative selective gain' framework proposed here integrates dopaminergic mechanisms known to modulate basal ganglia throughput into a single conceptual framework: (1) synaptic weights, the neural instantiation of accumulated experience and skill modulated by dopamine-dependent plasticity and (2) system gain, the operating parameters of the basal ganglia, modulated by dopamine's on-line effects on cell excitability, glutamatergic transmission and the balance between facilitatory and inhibitory pathways. Within this framework and based on recent work, a hypothesis is presented that prior synaptic weights and established skills can facilitate motor performance and preserve function despite diminished dopamine; however, dopamine denervation induces aberrant corticostriatal plasticity that degrades established synaptic weights and replaces them with inappropriate, inhibitory learning that inverts the function of the basal ganglia resulting in 'anti-optimization' of motor performance. Consequently, mitigating aberrant corticostriatal plasticity represents an important therapeutic objective, as reflected in the long-duration response to levodopa, reinterpreted here as the correction of aberrant learning. It is proposed that viewing aberrant corticostriatal plasticity and learning as a provisional endophenotype of PD would facilitate investigation of this hypothesis.
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Affiliation(s)
- Jeff A Beeler
- Department of Neurobiology, The University of Chicago, Chicago, IL, USA.
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50
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Anderson E, Nutt J. The long-duration response to levodopa: Phenomenology, potential mechanisms and clinical implications. Parkinsonism Relat Disord 2011; 17:587-92. [DOI: 10.1016/j.parkreldis.2011.03.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 03/21/2011] [Accepted: 03/23/2011] [Indexed: 10/18/2022]
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