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Jiang K, Zhao G, Feng Q, Guan S, Im H, Zhang B, Wang P, Jia X, Zhu H, Zhu Y, Wang H, Wang Q. The computational and neural substrates of individual differences in impulsivity under loss framework. Hum Brain Mapp 2024; 45:e26808. [PMID: 39126347 PMCID: PMC11316248 DOI: 10.1002/hbm.26808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/08/2024] [Accepted: 07/21/2024] [Indexed: 08/12/2024] Open
Abstract
Numerous neuroimaging studies have identified significant individual variability in intertemporal choice, often attributed to three neural mechanisms: (1) increased reward circuit activity, (2) decreased cognitive control, and (3) prospection ability. These mechanisms that explain impulsivity, however, have been primarily studied in the gain domain. This study extends this investigation to the loss domain. We employed a hierarchical Bayesian drift-diffusion model (DDM) and the inter-subject representational similarity approach (IS-RSA) to investigate the potential computational neural substrates underlying impulsivity in loss domain across two experiments (n = 155). These experiments utilized a revised intertemporal task that independently manipulated the amounts of immediate and delayed-loss options. Behavioral results demonstrated positive correlations between the drift rate, measured by the DDM, and the impulsivity index K in Exp. 1 (n = 97) and were replicated in Exp. 2 (n = 58). Imaging analyses further revealed that the drift rate significantly mediated the relations between brain properties (e.g., prefrontal cortex activations and gray matter volume in the orbitofrontal cortex and precuneus) and K in Exp. 1. IS-RSA analyses indicated that variability in the drift rate also mediated the associations between inter-subject variations in activation patterns and individual differences in K. These findings suggest that individuals with similar impulsivity levels are likely to exhibit similar value processing patterns, providing a potential explanation for individual differences in impulsivity within a loss framework.
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Affiliation(s)
- Keying Jiang
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - Guang Zhao
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - Qian Feng
- Epilepsy Center, Tsinghua University Hospital of Integrated Traditional Chinese and Western MedicineBeijingChina
| | - Shunping Guan
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | | | - Bin Zhang
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - Pinchun Wang
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - Xuji Jia
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - Haidong Zhu
- Normal CollegeShihezi UniversityShiheziChina
| | - Ye Zhu
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
| | - He Wang
- Institute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical CollegeTianjinChina
| | - Qiang Wang
- Faculty of PsychologyTianjin Normal UniversityTianjinChina
- Key Laboratory of Philosophy and Social Science of Anhui Province on Adolescent Mental Health and Crisis Intelligence InterventionHefeiChina
- Institute of Mathematics and Interdisciplinary SciencesTianjin Normal UniversityTianjinChina
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2
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Gan C, Cao X, Sun H, Ye S, Shi J, Shan A, Gao M, Wan C, Zhang K, Yuan Y. Multimodal neuroimaging fusion unravel structural-functional-neurotransmitter change in Parkinson's disease with impulse control disorders. Neurobiol Dis 2024; 198:106560. [PMID: 38852751 DOI: 10.1016/j.nbd.2024.106560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/25/2024] [Accepted: 06/06/2024] [Indexed: 06/11/2024] Open
Abstract
BACKGROUND Impulse control disorders (ICD) in Parkinson's disease (PD) is highly multifactorial in etiology and has intricate neural mechanisms. Our multimodal neuroimaging study aimed to investigate the specific patterns of structure-function-neurotransmitter interactions underlying ICD. METHODS Thirty PD patients with ICD (PD-ICD), 30 without ICD (PD-NICD) and 32 healthy controls (HCs) were recruited. Gyrification and perivascular spaces (PVS) were computed to capture the alternations of cortical surface morphology and glymphatic function. Seed-based functional connectivity (FC) were performed to identify the corresponding functional changes. Further, JuSpace toolbox were employed for cross-modal correlations to evaluate whether the spatial patterns of functional alterations in ICD patients were associated with specific neurotransmitter system. RESULTS Compared to PD-NICD, PD-ICD patients showed hypogyrification and enlarged PVS volume fraction in the left orbitofrontal gyrus (OFG), as well as decreased FC between interhemispheric OFG. The interhemispheric OFG connectivity reduction was associated with spatial distribution of μ-opioid pathway (r = -0.186, p = 0.029, false discovery rate corrected). ICD severity was positively associated with the PVS volume fraction of left OFG (r = 0.422, p = 0.032). Furthermore, gyrification index (LGI) and percent PVS (pPVS) in OFG and their combined indicator showed good performance in differentiating PD-ICD from PD-NICD. CONCLUSIONS Our findings indicated that the co-altered structure-function-neurotransmitter interactions of OFG might be involved in the pathogenesis of ICD.
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Affiliation(s)
- Caiting Gan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xingyue Cao
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Huimin Sun
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Shiyi Ye
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jiaxin Shi
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Aidi Shan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Mengxi Gao
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Chenhui Wan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Kezhong Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Yongsheng Yuan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; Jiangsu Key Laboratory of Neurodegeneration, Nanjing Medical University, Nanjing 211166, China.
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3
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Hendriks M, Vinke S, Berlot R, Benedičič M, Jahansahi M, Trošt M, Georgiev D. In Parkinson's disease dopaminergic medication and deep brain stimulation of the subthalamic nucleus increase motor, but not reflection and cognitive impulsivity. Front Neurosci 2024; 18:1378614. [PMID: 39035780 PMCID: PMC11258995 DOI: 10.3389/fnins.2024.1378614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 06/04/2024] [Indexed: 07/23/2024] Open
Abstract
Background Parkinson's disease is associated with increased impulsivity, which can be divided into several domains: motor (consisting of proactive and reactive subdomains), reflection, and cognitive impulsivity. Evidence suggests that both dopaminergic medication and subthalamic nucleus deep brain stimulation can affect impulsivity. Therefore, we set out to investigate the effects of dopaminergic medication and subthalamic nucleus deep brain stimulation on motor, reflection, and cognitive impulsivity in Parkinson's disease patients. Methods Twenty Parkinson's disease patients who underwent subthalamic nucleus deep brain stimulation were tested ON and OFF dopaminergic medication and ON and OFF subthalamic nucleus deep brain stimulation. They performed three different impulsivity tasks: the AX continuous performance task (AX-CPT) to test for motor impulsivity, the Beads task for reflection impulsivity, and the Delay discounting task for cognitive impulsivity. Results The combination of subthalamic nucleus deep brain stimulation and dopaminergic medication led to an increase in motor impulsivity (p = 0.036), both proactive (p = 0.045) and reactive (p = 0.006). There was no effect of either dopaminergic medication or subthalamic nucleus deep brain stimulation on reflection and cognitive impulsivity. Conclusion The combination of dopaminergic medication and subthalamic nucleus deep brain stimulation leads to increased motor, but not cognitive or reflection, impulsivity in patients with Parkinson's disease. Both proactive and reactive motor impulsivity were impaired by the combination of dopaminergic medication and subthalamic nucleus deep brain stimulation.
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Affiliation(s)
- Martijn Hendriks
- Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Department of Neurosurgery, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Saman Vinke
- Department of Neurosurgery, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Rok Berlot
- Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Mitja Benedičič
- Department of Neurosurgery, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Marjan Jahansahi
- Department Clinical and Motor Neurosciences, Institute of Neurology, University College London, London, United Kingdom
| | - Maja Trošt
- Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Dejan Georgiev
- Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Artificial Intelligence Laboratory, Faculty of Computer and Information Science, University of Ljubljana, Ljubljana, Slovenia
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4
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Gan C, Zhang H, Sun H, Cao X, Wang L, Zhang K, Yuan Y. Aberrant brain topological organization and granger causality connectivity in Parkinson's disease with impulse control disorders. Front Aging Neurosci 2024; 16:1364402. [PMID: 38725535 PMCID: PMC11079187 DOI: 10.3389/fnagi.2024.1364402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 04/03/2024] [Indexed: 05/12/2024] Open
Abstract
Introduction Impulse control disorders (ICDs) refer to the common neuropsychiatric complication of Parkinson's disease (PD). The white matter (WM) topological organization and its impact on brain networks remain to be established. Methods A total of 17 PD patients with ICD (PD-ICD), 17 without ICD (PD-NICD), and 18 healthy controls (HCs) were recruited. Graph theoretic analyses and Granger causality analyses were combined to investigate WM topological organization and the directional connection patterns of key regions. Results Compared to PD-NICD, ICD patients showed abnormal global properties, including decreased shortest path length (Lp) and increased global efficiency (Eg). Locally, the ICD group manifested abnormal nodal topological parameters predominantly in the left middle cingulate gyrus (MCG) and left superior cerebellum. Decreased directional connectivity from the left MCG to the right medial superior frontal gyrus was observed in the PD-ICD group. ICD severity was significantly correlated with Lp and Eg. Discussion Our findings reflected that ICD patients had excessively optimized WM topological organization, abnormally strengthened nodal structure connections within the reward network, and aberrant causal connectivity in specific cortical- limbic circuits. We hypothesized that the aberrant reward and motor inhibition circuit could play a crucial role in the emergence of ICDs.
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Affiliation(s)
- Caiting Gan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Heng Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huimin Sun
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xingyue Cao
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lina Wang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kezhong Zhang
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yongsheng Yuan
- Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Neurodegeneration, Nanjing Medical University, Nanjing, China
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5
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Soutschek A, Tobler PN. A process model account of the role of dopamine in intertemporal choice. eLife 2023; 12:83734. [PMID: 36884013 PMCID: PMC9995109 DOI: 10.7554/elife.83734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/27/2023] [Indexed: 03/09/2023] Open
Abstract
Theoretical accounts disagree on the role of dopamine in intertemporal choice and assume that dopamine either promotes delay of gratification by increasing the preference for larger rewards or that dopamine reduces patience by enhancing the sensitivity to waiting costs. Here, we reconcile these conflicting accounts by providing empirical support for a novel process model according to which dopamine contributes to two dissociable components of the decision process, evidence accumulation and starting bias. We re-analyzed a previously published data set where intertemporal decisions were made either under the D2 antagonist amisulpride or under placebo by fitting a hierarchical drift diffusion model that distinguishes between dopaminergic effects on the speed of evidence accumulation and the starting point of the accumulation process. Blocking dopaminergic neurotransmission not only strengthened the sensitivity to whether a reward is perceived as worth the delay costs during evidence accumulation (drift rate) but also attenuated the impact of waiting costs on the starting point of the evidence accumulation process (bias). In contrast, re-analyzing data from a D1 agonist study provided no evidence for a causal involvement of D1R activation in intertemporal choices. Taken together, our findings support a novel, process-based account of the role of dopamine for cost-benefit decision making, highlight the potential benefits of process-informed analyses, and advance our understanding of dopaminergic contributions to decision making.
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Affiliation(s)
| | - Philippe N Tobler
- Zurich Center for Neuroeconomics, Department of Economics, University of ZurichZürichSwitzerland
- Neuroscience Center Zurich, University of Zurich, Swiss Federal Institute of Technology ZurichZurichSwitzerland
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6
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Godefroy V, Sezer I, Bouzigues A, Montembeault M, Koban L, Plassmann H, Migliaccio R. Altered delay discounting in neurodegeneration: insight into the underlying mechanisms and perspectives for clinical applications. Neurosci Biobehav Rev 2023; 146:105048. [PMID: 36669749 DOI: 10.1016/j.neubiorev.2023.105048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/12/2022] [Accepted: 01/14/2023] [Indexed: 01/19/2023]
Abstract
Steeper delay discounting (i.e., the extent to which future rewards are perceived as less valuable than immediate ones) has been proposed as a transdiagnostic process across different health conditions, in particular psychiatric disorders. Impulsive decision-making is a hallmark of different neurodegenerative conditions but little is known about delay discounting in the domain of neurodegenerative conditions. We reviewed studies on delay discounting in patients with Parkinson's disease (PD) and in patients with dementia (Alzheimer's disease / AD or frontotemporal dementia / FTD). We proposed that delay discounting could be an early marker of the neurodegenerative process. We developed the idea that altered delay discounting is associated with overlapping but distinct neurocognitive mechanisms across neurodegenerative diseases: dopaminergic-related disorders of reward processing in PD, memory/projection deficits due to medial temporal atrophy in AD, modified reward processing due to orbitofrontal atrophy in FTD. Neurodegeneration could provide a framework to decipher the neuropsychological mechanisms of value-based decision-making. Further, delay discounting could become a marker of interest in clinical practice, in particular for differential diagnosis.
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Affiliation(s)
- Valérie Godefroy
- FrontLab, INSERM U1127, Institut du cerveau, Hôpital Pitié-Salpêtrière, Paris, France; Marketing Area, INSEAD, Fontainebleau, France; Control-Interoception-Attention Team, Paris Brain Institute (ICM), INSERM U 1127, CNRS UMR 7225, Sorbonne University, Paris, France.
| | - Idil Sezer
- FrontLab, INSERM U1127, Institut du cerveau, Hôpital Pitié-Salpêtrière, Paris, France
| | - Arabella Bouzigues
- FrontLab, INSERM U1127, Institut du cerveau, Hôpital Pitié-Salpêtrière, Paris, France
| | - Maxime Montembeault
- Douglas Research Centre, Montréal, Canada; Department of Psychiatry, McGill University, Montréal, Canada
| | - Leonie Koban
- Université Claude Bernard Lyon 1, CNRS, INSERM, Centre de Recherche en Neurosciences de Lyon CRNL U1028 UMR5292, Bron, France
| | - Hilke Plassmann
- Marketing Area, INSEAD, Fontainebleau, France; Control-Interoception-Attention Team, Paris Brain Institute (ICM), INSERM U 1127, CNRS UMR 7225, Sorbonne University, Paris, France
| | - Raffaella Migliaccio
- FrontLab, INSERM U1127, Institut du cerveau, Hôpital Pitié-Salpêtrière, Paris, France; Centre de Référence des Démences Rares ou Précoces, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France; Institute of Memory and Alzheimer's Disease, Centre of Excellence of Neurodegenerative Disease, Department of Neurology, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France.
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7
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Hamidianjahromi A, Tritos NA. Impulse control disorders in hyperprolactinemic patients on dopamine agonist therapy. Rev Endocr Metab Disord 2022; 23:1089-1099. [PMID: 36125673 DOI: 10.1007/s11154-022-09753-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 11/28/2022]
Abstract
Dopamine agonists (DAs) represent a mainstay of therapy for hyperprolactinemia and prolactinomas. The widespread use of DAs, including bromocriptine, cabergoline and (in some countries) quinagolide, has led to the emergence and recognition of impulse control disorders (ICDs) that may occur in association with DA therapy.Such ICDs include pathological gambling, compulsive shopping, hypersexuality and punding (the performance of repetitive tasks), among others. These manifestations can lead to substantial harms to patients and their families, if left undiagnosed and untreated. Several risk factors that may increase the risk of ICDs have been proposed, including younger age, male gender, smoking and alcohol use and history of depression.The diagnosis of ICDs in hyperprolactinemic patients treated with DAs requires a high index of suspicion and a systematic approach, using available screening questionnaires. However, it should be noted that available test instruments, including questionnaires and computerized tasks, have not been validated specifically in hyperprolactinemic patients. Hyperprolactinemic patients who develop ICDs should be withdrawn from DA therapy or, at a minimum, undergo a DA dose reduction, and considered for psychiatric consultation and cognitive behavioral therapy. However, the role of psychopharmacotherapy in hyperprolactinemic patients with ICDs remains incompletely characterized.Patient counseling regarding the risk of ICDs occurring in association with DA therapy, early detection and prompt intervention may mitigate potential harms associated with ICDs. Additional studies are needed to fully characterize risk factors, underlying mechanisms and identify effective therapies for ICDs in patients with hyperprolactinemia receiving DAs.
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Affiliation(s)
- Anahid Hamidianjahromi
- Neuroendocrine Unit and Neuroendocrine and Pituitary Tumor Clinical Center, Massachusetts General Hospital, 100 Blossom Street, Suite 140, 02114, Boston, MA, USA
| | - Nicholas A Tritos
- Neuroendocrine Unit and Neuroendocrine and Pituitary Tumor Clinical Center, Massachusetts General Hospital, 100 Blossom Street, Suite 140, 02114, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
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8
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Downey H, Haynes JM, Johnson HM, Odum AL. Deprivation Has Inconsistent Effects on Delay Discounting: A Review. Front Behav Neurosci 2022; 16:787322. [PMID: 35221945 PMCID: PMC8867822 DOI: 10.3389/fnbeh.2022.787322] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/11/2022] [Indexed: 11/15/2022] Open
Abstract
Delay discounting, the tendency for outcomes to be devalued as they are more temporally remote, has implications as a target for behavioral interventions. Because of these implications, it is important to understand how different states individuals may face, such as deprivation, influence the degree of delay discounting. Both dual systems models and state-trait views of delay discounting assume that deprivation may result in steeper delay discounting. Despite early inconsistencies and mixed results, researchers have sometimes asserted that deprivation increases delay discounting, with few qualifications. The aim of this review was to determine what empirical effect, if any, deprivation has on delay discounting. We considered many kinds of deprivation, such as deprivation from sleep, drugs, and food in humans and non-human animals. For 23 studies, we analyzed the effect of deprivation on delay discounting by computing effect sizes for the difference between delay discounting in a control, or baseline, condition and delay discounting in a deprived state. We discuss these 23 studies and other relevant studies found in our search in a narrative review. Overall, we found mixed effects of deprivation on delay discounting. The effect may depend on what type of deprivation participants faced. Effect sizes for deprivation types ranged from small for sleep deprivation (Hedge's gs between −0.21 and 0.07) to large for opiate deprivation (Hedge's gs between 0.42 and 1.72). We discuss possible reasons why the effect of deprivation on delay discounting may depend on deprivation type, including the use of imagined manipulations and deprivation intensity. The inconsistency in results across studies, even when comparing within the same type of deprivation, indicates that more experiments are needed to reach a consensus on the effects of deprivation on delay discounting. A basic understanding of how states affect delay discounting may inform translational efforts.
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Affiliation(s)
- Haylee Downey
- Odum Laboratory, Department of Psychology, Utah State University, Logan, UT, United States
- Translational Biology Medicine and Health Graduate Program, Virginia Tech, Blacksburg, VA, United States
| | - Jeremy M. Haynes
- Odum Laboratory, Department of Psychology, Utah State University, Logan, UT, United States
| | - Hannah M. Johnson
- Odum Laboratory, Department of Psychology, Utah State University, Logan, UT, United States
| | - Amy L. Odum
- Odum Laboratory, Department of Psychology, Utah State University, Logan, UT, United States
- *Correspondence: Amy L. Odum
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9
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Martín-Bastida A, Delgado-Alvarado M, Navalpotro-Gómez I, Rodríguez-Oroz MC. Imaging Cognitive Impairment and Impulse Control Disorders in Parkinson's Disease. Front Neurol 2021; 12:733570. [PMID: 34803882 PMCID: PMC8602579 DOI: 10.3389/fneur.2021.733570] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/28/2021] [Indexed: 12/04/2022] Open
Abstract
Dementia and mild forms of cognitive impairment as well as neuropsychiatric symptoms (i. e., impulse control disorders) are frequent and disabling non-motor symptoms of Parkinson's disease (PD). The identification of changes in neuroimaging studies for the early diagnosis and monitoring of the cognitive and neuropsychiatric symptoms associated with Parkinson's disease, as well as their pathophysiological understanding, are critical for the development of an optimal therapeutic approach. In the current literature review, we present an update on the latest structural and functional neuroimaging findings, including high magnetic field resonance and radionuclide imaging, assessing cognitive dysfunction and impulse control disorders in PD.
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Affiliation(s)
- Antonio Martín-Bastida
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain.,CIMA, Center of Applied Medical Research, Universidad de Navarra, Neurosciences Program, Pamplona, Spain
| | | | - Irene Navalpotro-Gómez
- Cognitive Impairment and Movement Disorders Unit, Neurology Department, Hospital del Mar, Barcelona, Spain.,Clinical and Biological Research in Neurodegenerative Diseases, Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (IMIM), Barcelona, Spain.,Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain
| | - María Cruz Rodríguez-Oroz
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain.,CIMA, Center of Applied Medical Research, Universidad de Navarra, Neurosciences Program, Pamplona, Spain.,IdiSNA, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
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10
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Ruitenberg MFL, van Wouwe NC, Wylie SA, Abrahamse EL. The role of dopamine in action control: Insights from medication effects in Parkinson's disease. Neurosci Biobehav Rev 2021; 127:158-170. [PMID: 33905788 DOI: 10.1016/j.neubiorev.2021.04.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/26/2021] [Accepted: 04/18/2021] [Indexed: 01/14/2023]
Abstract
Parkinson's disease (PD) is a neurological disorder associated primarily with overt motor symptoms. Several studies show that PD is additionally accompanied by impairments in covert cognitive processes underlying goal-directed motor functioning (e.g., action planning, conflict adaptation, inhibition), and that dopaminergic medication may modulate these action control components. In this review we aim to leverage findings from studies in this domain to elucidate the role of dopamine (DA) in action control. A qualitative review of studies that investigated the effects of medication status (on vs. off) on action control in PD suggests a component-specific role for DA in action control, although the expression of medication effects depends on characteristics of both the patients and experimental tasks used to measure action control. We discuss these results in the light of findings from other research lines examining the role of DA in action control (e.g., animal research, pharmacology), and recommend that future studies use multi-method, within-subject approaches to model DA effects on action control across different components as well as underlying striatal pathways (ventral vs. dorsal).
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Affiliation(s)
- M F L Ruitenberg
- Department of Health, Medical and Neuropsychology, Leiden University, Leiden, the Netherlands; Leiden Institute for Brain and Cognition, Leiden, the Netherlands; Department of Experimental Psychology, Ghent University, Ghent, Belgium.
| | - N C van Wouwe
- Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
| | - S A Wylie
- Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
| | - E L Abrahamse
- Department of Communication and Cognition, Tilburg University, Tilburg, the Netherlands
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11
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Meyer GM, Spay C, Beliakova A, Gaugain G, Pezzoli G, Ballanger B, Boulinguez P, Cilia R. Inhibitory control dysfunction in parkinsonian impulse control disorders. Brain 2021; 143:3734-3747. [PMID: 33320929 DOI: 10.1093/brain/awaa318] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/07/2020] [Accepted: 08/03/2020] [Indexed: 12/27/2022] Open
Abstract
Impulse control disorders (ICDs) in Parkinson's disease have been associated with dysfunctions in the control of value- or reward-based responding (choice impulsivity) and abnormalities in mesocorticolimbic circuits. The hypothesis that dysfunctions in the control of response inhibition (action impulsivity) also play a role in Parkinson's disease ICDs has recently been raised, but the underlying neural mechanisms have not been probed directly. We used high-resolution EEG recordings from 41 patients with Parkinson's disease with and without ICDs to track the spectral and dynamical signatures of different mechanisms involved in inhibitory control in a simple visuomotor task involving no selection between competing responses and no reward to avoid potential confounds with reward-based decision. Behaviourally, patients with Parkinson's disease with ICDs proved to be more impulsive than those without ICDs. This was associated with decreased beta activity in the precuneus and in a region of the medial frontal cortex centred on the supplementary motor area. The underlying dynamical patterns pinpointed dysfunction of proactive inhibitory control, an executive mechanism intended to gate motor responses in anticipation of stimulation in uncertain contexts. The alteration of the cortical drive of proactive response inhibition in Parkinson's disease ICDs pinpoints the neglected role the precuneus might play in higher order executive functions in coordination with the supplementary motor area, specifically for switching between executive settings. Clinical perspectives are discussed in the light of the non-dopaminergic basis of this function.
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Affiliation(s)
- Garance M Meyer
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Charlotte Spay
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Alina Beliakova
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Gabriel Gaugain
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Gianni Pezzoli
- Fondazione Grigioni per il Morbo di Parkinson, Milan, Italy.,Previous affiliation: Parkinson Institute, ASST "Gaetano Pini-CTO", Milan, Italy
| | - Bénédicte Ballanger
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Philippe Boulinguez
- Université de Lyon, F-69622, Lyon, France.,Université Lyon 1, Villeurbanne, France.,INSERM, U 1028, Lyon Neuroscience Research Center, Lyon, F-69000, France.,CNRS, UMR 5292, Lyon Neuroscience Research Center, Lyon, F-69000, France
| | - Roberto Cilia
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Department of Clinical Neurosciences, Parkinson and Movement Disorders Unit, Milan, Italy.,Previous affiliation: Parkinson Institute, ASST "Gaetano Pini-CTO", Milan, Italy
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12
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Mosley PE, Akram H. Neuropsychiatric effects of subthalamic deep brain stimulation. THE HUMAN HYPOTHALAMUS - MIDDLE AND POSTERIOR REGION 2021; 180:417-431. [DOI: 10.1016/b978-0-12-820107-7.00026-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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13
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Mosley PE, Paliwal S, Robinson K, Coyne T, Silburn P, Tittgemeyer M, Stephan KE, Perry A, Breakspear M. The structural connectivity of subthalamic deep brain stimulation correlates with impulsivity in Parkinson's disease. Brain 2020; 143:2235-2254. [PMID: 32568370 DOI: 10.1093/brain/awaa148] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 12/13/2022] Open
Abstract
Subthalamic deep brain stimulation (STN-DBS) for Parkinson's disease treats motor symptoms and improves quality of life, but can be complicated by adverse neuropsychiatric side-effects, including impulsivity. Several clinically important questions remain unclear: can 'at-risk' patients be identified prior to DBS; do neuropsychiatric symptoms relate to the distribution of the stimulation field; and which brain networks are responsible for the evolution of these symptoms? Using a comprehensive neuropsychiatric battery and a virtual casino to assess impulsive behaviour in a naturalistic fashion, 55 patients with Parkinson's disease (19 females, mean age 62, mean Hoehn and Yahr stage 2.6) were assessed prior to STN-DBS and 3 months postoperatively. Reward evaluation and response inhibition networks were reconstructed with probabilistic tractography using the participant-specific subthalamic volume of activated tissue as a seed. We found that greater connectivity of the stimulation site with these frontostriatal networks was related to greater postoperative impulsiveness and disinhibition as assessed by the neuropsychiatric instruments. Larger bet sizes in the virtual casino postoperatively were associated with greater connectivity of the stimulation site with right and left orbitofrontal cortex, right ventromedial prefrontal cortex and left ventral striatum. For all assessments, the baseline connectivity of reward evaluation and response inhibition networks prior to STN-DBS was not associated with postoperative impulsivity; rather, these relationships were only observed when the stimulation field was incorporated. This suggests that the site and distribution of stimulation is a more important determinant of postoperative neuropsychiatric outcomes than preoperative brain structure and that stimulation acts to mediate impulsivity through differential recruitment of frontostriatal networks. Notably, a distinction could be made amongst participants with clinically-significant, harmful changes in mood and behaviour attributable to DBS, based upon an analysis of connectivity and its relationship with gambling behaviour. Additional analyses suggested that this distinction may be mediated by the differential involvement of fibres connecting ventromedial subthalamic nucleus and orbitofrontal cortex. These findings identify a mechanistic substrate of neuropsychiatric impairment after STN-DBS and suggest that tractography could be used to predict the incidence of adverse neuropsychiatric effects. Clinically, these results highlight the importance of accurate electrode placement and careful stimulation titration in the prevention of neuropsychiatric side-effects after STN-DBS.
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Affiliation(s)
- Philip E Mosley
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia.,Neurosciences Queensland, St Andrew's War Memorial Hospital, Spring Hill, Queensland, Australia.,Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia.,Faculty of Medicine, University of Queensland, Herston, Queensland, Australia
| | - Saee Paliwal
- Translational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zürich and Swiss Federal Institute of Technology (ETH Zürich), Zürich, Switzerland
| | - Katherine Robinson
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Terry Coyne
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia.,Brizbrain and Spine, The Wesley Hospital, Auchenflower, Queensland, Australia
| | - Peter Silburn
- Neurosciences Queensland, St Andrew's War Memorial Hospital, Spring Hill, Queensland, Australia.,Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia
| | | | - Klaas E Stephan
- Translational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zürich and Swiss Federal Institute of Technology (ETH Zürich), Zürich, Switzerland.,Max Planck Institute for Metabolism Research, Cologne, Germany.,Wellcome Centre for Human Neuroimaging, University College London, London, UK
| | - Alistair Perry
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia.,Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, Germany.,Centre for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
| | - Michael Breakspear
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia.,Brain and Mind Priority Research Centre, Hunter Medical Research Institute, University of Newcastle, NSW, Australia
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14
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Mosley PE, Robinson K, Coyne T, Silburn P, Barker MS, Breakspear M, Robinson GA, Perry A. Subthalamic deep brain stimulation identifies frontal networks supporting initiation, inhibition and strategy use in Parkinson's disease. Neuroimage 2020; 223:117352. [DOI: 10.1016/j.neuroimage.2020.117352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/22/2020] [Accepted: 09/04/2020] [Indexed: 12/13/2022] Open
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15
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Loganathan K, Lv J, Cropley V, Ho ETW, Zalesky A. Associations Between Delay Discounting and Connectivity of the Valuation-control System in Healthy Young Adults. Neuroscience 2020; 452:295-310. [PMID: 33242540 DOI: 10.1016/j.neuroscience.2020.11.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 11/05/2020] [Accepted: 11/13/2020] [Indexed: 01/04/2023]
Abstract
The process of valuation assists in determining if an object or course of action is rewarding. Delay discounting is the observed decay of a rewards' subjective value over time. Encoding the subjective value of rewards across a spectrum has been attributed to brain regions belonging to the valuation and executive control systems. The valuation system (VS) encodes reward value over short and long delays, influencing reinforcement learning and reward representation. The executive control system (ECS) becomes more active as choice difficulty increases, integrating contextual and mnemonic information with salience signals in the modulation of decision-making. Here, we aimed to identify resting-state functional connectivity-based patterns of the VS and ECS correlated with value-setting and delay discounting (outside-scanner paradigm) in a large (n = 992) cohort of healthy young adults from the Human Connectome Project (HCP). Results suggest the VS may be involved in value-setting of small, immediate rewards while the ECS may be involved in value-setting and delay discounting for large and small rewards over a range of delays. We observed magnitude sensitive connections involving the posterior cingulate cortex, time-sensitive connections with the ventromedial and lateral prefrontal cortex while connections involving the posterior parietal cortex appeared both magnitude- and time-sensitive. The ventromedial prefrontal cortex and posterior parietal cortex could act as "comparator" regions, weighing the value of small rewards against large rewards across various delay duration to aid in decision-making.
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Affiliation(s)
- Kavinash Loganathan
- Centre for Intelligent Signal & Imaging Research, Universiti Teknologi PETRONAS, Perak, Malaysia.
| | - Jinglei Lv
- Sydney Imaging & School of Biomedical Engineering, The University of Sydney, Sydney, Australia; Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne & Melbourne Health, Melbourne Australia; Department of Biomedical Engineering, University of Melbourne, Melbourne, Australia
| | - Vanessa Cropley
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne & Melbourne Health, Melbourne Australia
| | - Eric Tatt Wei Ho
- Centre for Intelligent Signal & Imaging Research, Universiti Teknologi PETRONAS, Perak, Malaysia; Department of Electrical & Electronics Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia
| | - Andrew Zalesky
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne & Melbourne Health, Melbourne Australia; Department of Biomedical Engineering, University of Melbourne, Melbourne, Australia
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16
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Jiménez-Urbieta H, Gago B, Quiroga-Varela A, Rodríguez-Chinchilla T, Merino-Galán L, Delgado-Alvarado M, Navalpotro-Gómez I, Belloso-Iguerategui A, Marin C, Rodríguez-Oroz MC. Motor impulsivity and delay intolerance are elicited in a dose-dependent manner with a dopaminergic agonist in parkinsonian rats. Psychopharmacology (Berl) 2020; 237:2419-2431. [PMID: 32440779 DOI: 10.1007/s00213-020-05544-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 04/30/2020] [Indexed: 10/24/2022]
Abstract
RATIONALE Impulse control disorders (ICD) and other impulsive-compulsive behaviours are frequently found in Parkinson's disease (PD) patients treated with dopaminergic agonists. To date, there are no available animal models to investigate their pathophysiology and determine whether they can be elicited by varying doses of dopaminergic drugs. In addition, there is some controversy regarding the predispositional pattern of striatal dopaminergic depletion. OBJECTIVES To study the effect of two doses of pramipexole (PPX) on motor impulsivity, delay intolerance and compulsive-like behaviour. METHODS Male rats with mild dopaminergic denervation in the dorsolateral striatum (bilateral injections of 6-hydroxidopamine (6-OHDA)) treated with two doses of PPX (0.25 mg/kg and 3 mg/kg) and tested in the variable delay-to-signal paradigm. RESULTS Partial (50%) dopaminergic depletion did not induce significant changes in motor impulsivity or delay intolerance. However, 0.25 mg/kg of PPX increased motor impulsivity, while 3 mg/kg of PPX increased both motor impulsivity and delay intolerance. These effects were independent of the drug's antiparkinsonian effects. Importantly, impulsivity scores before and after dopaminergic lesion were positively associated with the impulsivity observed after administering 3 mg/kg of PPX. No compulsive-like behaviour was induced by PPX administration. CONCLUSIONS We described a rat model, with a moderate dorsolateral dopaminergic lesion resembling that suffered by patients with early PD, that develops different types of impulsivity in a dose-dependent manner dissociated from motor benefits when treated with PPX. This model recapitulates key features of abnormal impulsivity in PD and may be useful for deepening our understanding of the pathophysiology of ICD.
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Affiliation(s)
| | - Belén Gago
- Instituto de Investigación Biomédica de Málaga, Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - Ana Quiroga-Varela
- Centro de Investigación Médica Aplicada (CIMA), Universidad de Navarra, Pamplona, Spain
| | | | - Leyre Merino-Galán
- Centro de Investigación Médica Aplicada (CIMA), Universidad de Navarra, Pamplona, Spain.,University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Manuel Delgado-Alvarado
- Neurology Department, Sierrallana Hospital, Torrelavega, Spain.,Psychiatry Research Area, IDIVAL, University Hospital Marqués de Valdecilla, Santander, Spain.,Biomedical Research Networking Center for Mental Health (CIBERSAM), Madrid, Spain
| | | | | | - Concepció Marin
- IRCE, Institut d' investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - María C Rodríguez-Oroz
- Centro de Investigación Médica Aplicada (CIMA), Universidad de Navarra, Pamplona, Spain. .,Ikerbasque Foundation, Bilbao, Spain. .,Basque Center on Cognition, Brain and Language (BCBL), San Sebastián, Spain. .,Servicio de Neurología, Clínica Universidad de Navarra, Pamplona, Spain.
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17
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Neuropsychiatric aspects of Parkinson disease psychopharmacology: Insights from circuit dynamics. HANDBOOK OF CLINICAL NEUROLOGY 2020; 165:83-121. [PMID: 31727232 DOI: 10.1016/b978-0-444-64012-3.00007-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Parkinson disease (PD) is a neurodegenerative disorder with a complex pathophysiology characterized by the progressive loss of dopaminergic neurons within the substantia nigra. Persons with PD experience several motoric and neuropsychiatric symptoms. Neuropsychiatric features of PD include depression, anxiety, psychosis, impulse control disorders, and apathy. In this chapter, we will utilize the National Institutes of Mental Health Research Domain Criteria (RDoC) to frame and integrate observations from two prevailing disease constructions: neurotransmitter anomalies and circuit physiology. When there is available evidence, we posit how unified translational observations may have clinical relevance and postulate importance outside of PD. Finally, we review the limited evidence available for pharmacologic management of these symptoms.
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18
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Al Jaja A, Grahn JA, Herrmann B, MacDonald PA. The effect of aging, Parkinson's disease, and exogenous dopamine on the neural response associated with auditory regularity processing. Neurobiol Aging 2020; 89:71-82. [PMID: 32057529 DOI: 10.1016/j.neurobiolaging.2020.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 11/25/2019] [Accepted: 01/01/2020] [Indexed: 01/10/2023]
Abstract
Processing regular patterns in auditory scenes is important for navigating complex environments. Electroencephalography studies find enhancement of sustained brain activity, correlating with the emergence of a regular pattern in sounds. How aging, aging-related diseases such as Parkinson's disease (PD), and treatment of PD with dopaminergic therapy affect this fundamental function remain unknown. We addressed this knowledge gap. Healthy younger and older adults and patients with PD listened to sounds that contained or were devoid of regular patterns. Healthy older adults and patients with PD were tested twice-off and on dopaminergic medication, in counterbalanced order. Regularity-evoked, sustained electroencephalography activity was reduced in older, compared with younger adults. Patients with PD and older controls evidenced comparable attenuation of the sustained response. Dopaminergic therapy further weakened the sustained response in both older controls and patients with PD. These findings suggest that fundamental regularity processing is impacted by aging but not specifically by PD. The finding that dopaminergic therapy attenuates rather than improves the sustained response coheres with the dopamine overdose response and is in line with previous findings that regularity processing implicates brain regions receiving dopamine from the ventral tegmental area that is relatively spared in PD and normal aging.
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Affiliation(s)
- Abdullah Al Jaja
- The Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada; Schulich School of Medicine & Dentistry, Graduate Neuroscience Program, University of Western Ontario, London, Ontario, Canada
| | - Jessica A Grahn
- The Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada; Department of Psychology, University of Western Ontario, London, Ontario, Canada
| | - Björn Herrmann
- The Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada; Department of Psychology, University of Western Ontario, London, Ontario, Canada
| | - Penny A MacDonald
- The Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada; Department of Clinical Neurological Sciences, University of Western Ontario, London, Ontario, Canada.
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19
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Yildirim E, Altinayar S, Cakmur R. Decision-making and impulse-control disorders in Parkinson's disease: Influence of dopaminergic treatment. NEUROL SCI NEUROPHYS 2020. [DOI: 10.4103/nsn.nsn_12_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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20
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Oroz Artigas S, Liu L, Strang S, Burrasch C, Hermsteiner A, Münte TF, Park SQ. Enhancement in dopamine reduces generous behaviour in women. PLoS One 2019; 14:e0226893. [PMID: 31891605 PMCID: PMC6938376 DOI: 10.1371/journal.pone.0226893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 12/08/2019] [Indexed: 12/04/2022] Open
Abstract
Generosity is a human behavior common in social contexts. However, humans are not equally generous to everyone alike. Instead, generosity decreases as a function of social distance, an effect called social discounting. Studies show that such social discounting effect depends on diverse factors including personality traits, cultures, stress or hormonal levels. Recently, the importance of the neurotransmitter dopamine in regulating social interactions has been highlighted. However, it remains unclear how exactly dopamine agonist administration modulates generous behavior as a function of social discounting. Here, we investigate the causal effect of dopamine agonist administration on social discounting in a pharmacological intervention study. We employ a randomized, double-blind, within-subject design to investigate the impact of the D2/D3 receptor agonist pramipexole on social discounting by keeping gender constant. We apply hyperbolic social discount model to the data and provide evidence that women under pramipexole become less generous in general, especially towards close others. Our results highlight the crucial role of dopamine in social decision making.
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Affiliation(s)
| | - Lu Liu
- Department of Psychology, University of Lübeck, Lübeck, Germany
- Department of Decision Neuroscience & Nutrition, German Institute of Human Nutrition, Nuthetal, Germany
- Deutsches Zentrum für Diabetes, Neuherberg, Germany
| | - Sabrina Strang
- Department of Psychology, University of Lübeck, Lübeck, Germany
| | | | | | - Thomas F. Münte
- Department of Neurology, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Soyoung Q. Park
- Department of Psychology, University of Lübeck, Lübeck, Germany
- Department of Decision Neuroscience & Nutrition, German Institute of Human Nutrition, Nuthetal, Germany
- Deutsches Zentrum für Diabetes, Neuherberg, Germany
- Neuroscience Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- * E-mail:
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21
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Martinez E, Pasquereau B, Saga Y, Météreau É, Tremblay L. The anterior caudate nucleus supports impulsive choices triggered by pramipexole. Mov Disord 2019; 35:296-305. [PMID: 31737954 DOI: 10.1002/mds.27898] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 09/30/2019] [Accepted: 10/06/2019] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Pramipexole is a dopamine agonist used as a treatment in PD and restless legs syndrome to reduce motor symptoms, but it often induces impulse control disorders. In particular, patients with impulse control disorders tend to make more impulsive choices in the delay discounting task, that is, they choose small immediate rewards over larger delayed ones more often than patients without impulse control disorders and healthy subjects do. Yet the site of action of pramipexole that produces these impulsive choices remains unknown. Based on the heterogeneity of corticostriatal projections and the massive dopamine innervation of the striatum, we hypothesized that impulsive choices triggered by dopamine treatments may be supported by a specific striatal territory. OBJECTIVES This study aims to determine by which anteriorstriatum territory the Pramipexole trigger impulsive choices; the caudate nucleus, the ventral striatum or the putamen. METHODS We compared pramipexole intramuscular injections to intracerebral microinjections within the three striatal territories in healthy monkeys trained to execute the delay discounting task, a behavioral paradigm typically used to evaluate impulsive choices. RESULTS We found that pramipexole intramuscular injections induced impulsive choices in all monkeys. Local microinjections were performed inside the anterior caudate nucleus, ventral striatum, and anterior putamen and reproduced those impulsive choices when pramipexole was directly injected into the caudate nucleus, whereas injections into the ventral striatum or putamen had no effect on monkeys' choices. CONCLUSIONS These results, consistent with clinical studies, suggest that impulsive choices triggered by pramipexole are supported by the caudate nucleus, allowing us to emphasize the importance of dopamine modulation inside this striatal territory in decision processes underlying impulsive behaviors. © 2019 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Eva Martinez
- Institut des Sciences Cognitives Marc Jeannerod, UMR-5229, Bron, France.,Université Claude Bernard Lyon 1, Villeurbanne, France
| | | | - Yosuke Saga
- Institut des Sciences Cognitives Marc Jeannerod, UMR-5229, Bron, France
| | - Élise Météreau
- Institut des Sciences Cognitives Marc Jeannerod, UMR-5229, Bron, France
| | - Léon Tremblay
- Institut des Sciences Cognitives Marc Jeannerod, UMR-5229, Bron, France.,Université Claude Bernard Lyon 1, Villeurbanne, France
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22
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Paz-Alonso PM, Navalpotro-Gomez I, Boddy P, Dacosta-Aguayo R, Delgado-Alvarado M, Quiroga-Varela A, Jimenez-Urbieta H, Carreiras M, Rodriguez-Oroz MC. Functional inhibitory control dynamics in impulse control disorders in Parkinson's disease. Mov Disord 2019; 35:316-325. [PMID: 31710401 DOI: 10.1002/mds.27885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/02/2019] [Accepted: 09/13/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Impulse control disorders related to alterations in the mesocorticolimbic dopamine network occur in Parkinson's disease (PD). Our objective was to investigate the functional neural substrates of reward processing and inhibitory control in these patients. METHODS Eighteen PD patients with impulse control disorders, 17 without this complication, and 18 healthy controls performed a version of the Iowa Gambling Task during functional magnetic resonance scanning under 3 conditions: positive, negative, and mixed feedback. Whole-brain contrasts, regions of interest, time courses, functional connectivity analyses, and brain-behavior associations were examined. RESULTS PD patients with impulse control disorders exhibited hyperactivation in subcortical and cortical regions typically associated with reward processing and inhibitory control compared with their PD and healthy control counterparts. Time-course analyses revealed that only PD patients with impulse control disorders exhibited stronger signal intensity during the initial versus final periods of the negative-feedback condition in bilateral insula, and right ventral striatum. Interestingly, hyperactivation of all the examined right-lateralized frontostriatal areas during negative feedback was positively associated with impulse control disorder severity. Importantly, positive associations between impulse control disorder severity and regional activations in the right insula and right inferior frontal gyrus, but not the right subthalamic nucleus, were mediated by functional connectivity with the right ventral striatum. CONCLUSIONS During a reward-based task, PD patients with impulse control disorders showed hyperactivation in a right-lateralized network of regions including the subthalamic nucleus that was strongly associated with impulse control disorder severity. In these patients, the right ventral striatum in particular played a critical role in modulating the functional dynamics of right-lateralized inhibitory-control frontal regions when facing penalties. © 2019 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Pedro M Paz-Alonso
- BCBL. Basque Center on Cognition, Brain and Language, Donostia-San Sebastián, Spain
| | - I Navalpotro-Gomez
- Neurodegenerative Disorders Area, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain.,Servei de Neurologia, Hospital del Mar, Parc de Salut Mar-IMIM, Barcelona, Spain
| | - P Boddy
- BCBL. Basque Center on Cognition, Brain and Language, Donostia-San Sebastián, Spain
| | - R Dacosta-Aguayo
- Neurodegenerative Disorders Area, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain
| | - M Delgado-Alvarado
- Neurodegenerative Disorders Area, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain.,Neurology Department, Sierrallana Hospital, Torrelavega, Spain.,IDIVAL, Valdecilla Biomedical Research Institute, Santander, Spain.,Biomedical Research Networking Center for Mental Health (CIBERSAM), Madrid, Spain
| | - A Quiroga-Varela
- Neurodegenerative Disorders Area, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain.,Neuroscience Area, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - H Jimenez-Urbieta
- Neurodegenerative Disorders Area, Biodonostia Health Research Institute, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain
| | - M Carreiras
- BCBL. Basque Center on Cognition, Brain and Language, Donostia-San Sebastián, Spain.,Ikerbasque (Basque Foundation for Science), Bilbao, Spain
| | - Maria C Rodriguez-Oroz
- BCBL. Basque Center on Cognition, Brain and Language, Donostia-San Sebastián, Spain.,CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain.,Neuroscience Area, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Ikerbasque (Basque Foundation for Science), Bilbao, Spain.,Department of Neurology, Clínica Universidad de Navarra, Universidad de Navarra, Pamplona, Spain
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23
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Mosley PE, Paliwal S, Robinson K, Coyne T, Silburn P, Tittgemeyer M, Stephan KE, Breakspear M, Perry A. The structural connectivity of discrete networks underlies impulsivity and gambling in Parkinson’s disease. Brain 2019; 142:3917-3935. [DOI: 10.1093/brain/awz327] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/25/2019] [Accepted: 08/30/2019] [Indexed: 12/13/2022] Open
Abstract
See O’Callaghan (doi:10.1093/brain/awz349) for a scientific commentary on this article.
Mosley et al. examine impulsivity and naturalistic gambling behaviours in patients with Parkinson’s disease. They link within-patient differences to the structural connectivity of networks subserving reward evaluation and response inhibition, and reveal pivotal roles for the ventral striatum and subthalamic nucleus within these networks.
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Affiliation(s)
- Philip E Mosley
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- Neurosciences Queensland, St Andrew’s War Memorial Hospital, Spring Hill, Queensland, Australia
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia
- Faculty of Medicine, University of Queensland, Herston, Queensland, Australia
| | - Saee Paliwal
- Translational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zürich and Swiss Federal Institute of Technology (ETH Zürich), Zürich, Switzerland
| | - Katherine Robinson
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Terry Coyne
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia
- Brizbrain and Spine, the Wesley Hospital, Auchenflower, Queensland, Australia
| | - Peter Silburn
- Neurosciences Queensland, St Andrew’s War Memorial Hospital, Spring Hill, Queensland, Australia
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia
| | | | - Klaas E Stephan
- Translational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zürich and Swiss Federal Institute of Technology (ETH Zürich), Zürich, Switzerland
- Max Planck Institute for Metabolism Research, Cologne, Germany
- Wellcome Centre for Human Neuroimaging, University College London, London, UK
| | - Michael Breakspear
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Alistair Perry
- Systems Neuroscience Group, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, Germany
- Centre for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
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24
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Spay C, Meyer G, Lio G, Pezzoli G, Ballanger B, Cilia R, Boulinguez P. Resting state oscillations suggest a motor component of Parkinson's Impulse Control Disorders. Clin Neurophysiol 2019; 130:2065-2075. [PMID: 31541984 DOI: 10.1016/j.clinph.2019.08.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 07/02/2019] [Accepted: 08/14/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Impulse control disorders (ICDs) in Parkinson's disease (PD) have been associated with cognitive impulsivity and dopaminergic dysfunction and treatment. The present study tests the neglected hypothesis that the neurofunctional networks involved in motor impulsivity might also be dysfunctional in PD-ICDs. METHODS We performed blind spectral analyses of resting state electroencephalographic (EEG) data in PD patients with and without ICDs to probe the functional integrity of all cortical networks. Analyses were performed directly at the source level after blind source separation. Discrete differences between groups were tested by comparing patients with and without ICDs. Gradual dysfunctions were assessed by means of correlations between power changes and clinical scores reflecting ICD severity (QUIP score). RESULTS Spectral signatures of ICDs were found in the medial prefrontal cortex, the dorsal anterior cingulate and the supplementary motor area, in the beta and gamma bands. Beta power changes in the supplementary motor area were found to predict ICDs severity. CONCLUSION ICDs are associated with abnormal activity within frequency bands and cortical circuits supporting the control of motor response inhibition. SIGNIFICANCE These results bring to the forefront the need to consider, in addition to the classical interpretation based on aberrant mesocorticolimbic reward processing, the issue of motor impulsivity in PD-ICDs and its potential implications for PD therapy.
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Affiliation(s)
- Charlotte Spay
- Université de Lyon, 92 rue Pasteur, 69007 Lyon, France; Université Lyon 1, 43 boulevard du 11 novembre 1918, 69622 Villeurbanne, France; INSERM, U 1028, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France; CNRS, UMR 5292, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France
| | - Garance Meyer
- Université de Lyon, 92 rue Pasteur, 69007 Lyon, France; Université Lyon 1, 43 boulevard du 11 novembre 1918, 69622 Villeurbanne, France; INSERM, U 1028, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France; CNRS, UMR 5292, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France
| | - Guillaume Lio
- Centre de Neuroscience Cognitive, UMR 5229, 67 boulevard Pinel, 69675 Bron, France
| | - Gianni Pezzoli
- Parkinson Institute, ASST Gaetano Pini-CTO, Via bignami 1, 20126 Milan, Italy
| | - Bénédicte Ballanger
- Université de Lyon, 92 rue Pasteur, 69007 Lyon, France; Université Lyon 1, 43 boulevard du 11 novembre 1918, 69622 Villeurbanne, France; INSERM, U 1028, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France; CNRS, UMR 5292, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France
| | - Roberto Cilia
- Parkinson Institute, ASST Gaetano Pini-CTO, Via bignami 1, 20126 Milan, Italy
| | - Philippe Boulinguez
- Université de Lyon, 92 rue Pasteur, 69007 Lyon, France; Université Lyon 1, 43 boulevard du 11 novembre 1918, 69622 Villeurbanne, France; INSERM, U 1028, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France; CNRS, UMR 5292, Lyon Neuroscience Research Center, 95 boulevard Pinel, 69500 Bron, France.
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25
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Abstract
In addition to motor symptoms, behavioural complications are commonly found in patients with Parkinson's disease (PD). Behavioural complications, including depression, anxiety, apathy, impulse control disorder and psychosis, together have a large impact on PD patient's quality of life. Many neuroimaging studies using PET, SPECT and MRI techniques have been conducted to study the underlying neural mechanisms of PD pathogenesis and pathophysiology in relation to its behavioural complications. This review will survey these PET, SPECT and MRI studies to describe the current understanding of the neuro-chemical, functional and structural changes associated with behavioural complications in PD patients.
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26
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Abstract
Purpose of Review Parkinson’s disease (PD) has a wide spectrum of symptoms including the presence of psychiatric disease. At present, most treatment plans, comprised of dopaminergic drugs, are chronic and complex. Though dopaminergic agents are quite efficient in managing the motor aspects of the disease, chronic pharmacotherapy specifically with dopamine receptor agonists has been highly linked to the occurrence of Impulse Compulsive disorder (ICD), which can be problematic for individual patients. Recent Findings Much of what is known today about PD-related ICD stems from brain imaging studies, however, evidence is not quite conclusive. Research in the field has been focused on identifying the underlying mechanisms of PD-related ICD and understanding the functions of the structures involved in the reward network. Summary This article presents an update of recent findings from key neuroimaging studies in PD-related ICD, discusses results from controversial studies, and identifies areas for future research in the field.
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Affiliation(s)
- Andreas-Antonios Roussakis
- Neurology Imaging Unit, Imperial College London - Hammersmith Hospital, 1st Floor, B-Block, Du Cane Road, London, W12 0NN, UK
| | - Nicholas P Lao-Kaim
- Neurology Imaging Unit, Imperial College London - Hammersmith Hospital, 1st Floor, B-Block, Du Cane Road, London, W12 0NN, UK
| | - Paola Piccini
- Neurology Imaging Unit, Imperial College London - Hammersmith Hospital, 1st Floor, B-Block, Du Cane Road, London, W12 0NN, UK.
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27
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Canário N, Sousa M, Moreira F, Duarte IC, Oliveira F, Januário C, Castelo-Branco M. Impulsivity across reactive, proactive and cognitive domains in Parkinson's disease on dopaminergic medication: Evidence for multiple domain impairment. PLoS One 2019; 14:e0210880. [PMID: 30759108 PMCID: PMC6373905 DOI: 10.1371/journal.pone.0210880] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 01/03/2019] [Indexed: 11/24/2022] Open
Abstract
Impulse control disorders (ICD) may occur in Parkinson’s disease (PD) although it remains to be understood if such deficits may occur even in the absence of a formal ICD diagnosis. Moreover, studies addressing simultaneously distinct neurobehavioral domains, such as cognitive, proactive and reactive motor impulsivity, are still lacking. Here, we aimed to investigate if reactive, proactive and cognitive impulsivity involving risk taking are concomitantly affected in medicated PD patients, and whether deficits were dependent on response strategies, such as speed accuracy tradeoffs, or the proportion of omission vs. commission errors. We assessed three different impulsivity domains in a sample of 21 PD patients and 13 matched controls. We found impaired impulsivity in both reactive (p = 0.042) and cognitive domains (p = 0.015) for the PD patients, irrespective of response strategy. For the latter, effect sizes were larger for the actions related with reward processing (p = 0.017, dCohen = 0.9). In the proactive impulsivity task, PD patients showed significantly increased number of omissions (p = 0.041), a response strategy which was associated with preserved number of commission errors. Moreover, the number of premature and proactive response errors were correlated with disease stage. Our findings suggest that PD ON medication is characterized compared to healthy controls by impairment across several impulsivity domains, which is moderated in the proactive domain by the response strategy.
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Affiliation(s)
- Nádia Canário
- Coimbra Institute for Biomedical Imaging and Translational Research (CiBit), ICNAS—Institute for Nuclear Sciences Applied to Health, Brain Imaging Network of Portugal, Coimbra, Portugal
- Laboratory of Biostatistics and Medical Informatics, Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Mário Sousa
- Division of Movement Disorders, Department of Neurology, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - Fradique Moreira
- Division of Movement Disorders, Department of Neurology, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - Isabel Catarina Duarte
- Coimbra Institute for Biomedical Imaging and Translational Research (CiBit), ICNAS—Institute for Nuclear Sciences Applied to Health, Brain Imaging Network of Portugal, Coimbra, Portugal
- Laboratory of Biostatistics and Medical Informatics, Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Francisco Oliveira
- Coimbra Institute for Biomedical Imaging and Translational Research (CiBit), ICNAS—Institute for Nuclear Sciences Applied to Health, Brain Imaging Network of Portugal, Coimbra, Portugal
| | - Cristina Januário
- Division of Movement Disorders, Department of Neurology, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - Miguel Castelo-Branco
- Coimbra Institute for Biomedical Imaging and Translational Research (CiBit), ICNAS—Institute for Nuclear Sciences Applied to Health, Brain Imaging Network of Portugal, Coimbra, Portugal
- Laboratory of Biostatistics and Medical Informatics, Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- * E-mail:
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28
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Meyer GM, Spay C, Laurencin C, Ballanger B, Sescousse G, Boulinguez P. Functional imaging studies of Impulse Control Disorders in Parkinson's disease need a stronger neurocognitive footing. Neurosci Biobehav Rev 2019; 98:164-176. [PMID: 30639672 DOI: 10.1016/j.neubiorev.2019.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 11/22/2018] [Accepted: 01/07/2019] [Indexed: 02/06/2023]
Abstract
Impulse control disorders (ICDs) in Parkinson's disease (PD) are associated with dopaminergic dysfunction and treatment, but have no satisfactory therapeutic solution. While studies assessing the neurofunctional bases of ICDs are important for advancing our understanding and management of ICDs, they remain sparse and inconsistent. Based on a systematic analysis of the neuroimaging literature, the present review pinpoints various abnormalities beyond the mesocorticolimbic circuit that supports reward processing, suggesting possible dysfunction at the sensorimotor, executive and affective levels. We advocate that: 1) Future studies should use more sophisticated psychological models and behavioral designs that take into account the potentially multifaceted aspect of ICDs; this would allow a more accurate assessment of the underlying neurocognitive processes, which are not all dependent on the dopaminergic system. 2) Future neuroimaging studies should rely more strongly on task-based, event-related analyses to disentangle the various mechanisms that can be dysfunctional in ICDs. We believe these guidelines constitute a prerequisite towards distinguishing causes, correlates and individual susceptibility factors of PD patients with ICDs.
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Affiliation(s)
- Garance M Meyer
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, Action Control and Related Disorders team, F-69000, Lyon, France
| | - Charlotte Spay
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, Action Control and Related Disorders team, F-69000, Lyon, France
| | - Chloé Laurencin
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, Neuroplasticity and Neuropathology of Olfactory Perception team, F-69000, Lyon, France; Service de Neurologie C, Centre Expert Parkinson, Hôpital Neurologique Pierre, Wertheimer, Hospices Civils de Lyon, Lyon, France
| | - Bénédicte Ballanger
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, Neuroplasticity and Neuropathology of Olfactory Perception team, F-69000, Lyon, France
| | - Guillaume Sescousse
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, PsyR2 team, F-69000, Lyon, France
| | - Philippe Boulinguez
- Université de Lyon, Université Claude Bernard Lyon 1, Lyon Neuroscience Research Center, INSERM, U 1028, CNRS, UMR 5292, Action Control and Related Disorders team, F-69000, Lyon, France.
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29
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Filip P, Linhartová P, Hlavatá P, Šumec R, Baláž M, Bareš M, Kašpárek T. Disruption of Multiple Distinctive Neural Networks Associated With Impulse Control Disorder in Parkinson's Disease. Front Hum Neurosci 2018; 12:462. [PMID: 30519167 PMCID: PMC6258801 DOI: 10.3389/fnhum.2018.00462] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 11/01/2018] [Indexed: 01/02/2023] Open
Abstract
The phenomenon of impulsivity in Parkinson's disease appears as an arduous side effect of dopaminergic therapy with potentially detrimental consequences for the life of the patients. Although conceptualized as a result of non-physiologic chronic dopaminergic stimulation, recent advances speculate on combined disruption of other networks as well. In the search for neuroanatomical correlates of this multifaceted disturbance, this study employs two distinct, well-defined tasks of close association to motor inhibition and decision-making impulsivity, Go/No Go and Delay discounting. The fMRI and functional connectivity analysis in 21 Parkinson's disease patients, including 8 patients suffering from severe impulse control disorder, and 28 healthy controls, revealed in impulsive Parkinson's disease patients not only decreased fMRI activation in the dorsolateral prefrontal cortex and bilateral striatum, but also vast functional connectivity changes of both caudate nuclei as decreased connectivity to the superior parietal cortex and increased connectivity to the insular area, clearly beyond the commonly stated areas, which indicates that orbitofronto-striatal and mesolimbic functional disruptions are not the sole mechanisms underlying impulse control disorder in Parkinson's disease. Ergo, our results present a refinement and synthesis of gradually developing ideas about the nature of impulsive control disorder in Parkinson's disease—an umbrella term encompassing various behavioral deviations related to distinct neuronal networks and presumably neurotransmitter systems, which greatly exceed the previously envisioned dopaminergic pathways as the only culprit.
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Affiliation(s)
- Pavel Filip
- First Department of Neurology, Faculty of Medicine, Masaryk University and University Hospital of St. Anne, Brno, Czechia.,Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, MN, United States
| | - Pavla Linhartová
- Department of Psychiatry, Faculty of Medicine, Masaryk University and University Hospital Brno, Brno, Czechia
| | - Pavlína Hlavatá
- Department of Psychiatry, Faculty of Medicine, Masaryk University and University Hospital Brno, Brno, Czechia
| | - Rastislav Šumec
- First Department of Neurology, Faculty of Medicine, Masaryk University and University Hospital of St. Anne, Brno, Czechia
| | - Marek Baláž
- First Department of Neurology, Faculty of Medicine, Masaryk University and University Hospital of St. Anne, Brno, Czechia
| | - Martin Bareš
- First Department of Neurology, Faculty of Medicine, Masaryk University and University Hospital of St. Anne, Brno, Czechia.,Department of Neurology, School of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Tomáš Kašpárek
- Department of Psychiatry, Faculty of Medicine, Masaryk University and University Hospital Brno, Brno, Czechia
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30
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Grall-Bronnec M, Victorri-Vigneau C, Donnio Y, Leboucher J, Rousselet M, Thiabaud E, Zreika N, Derkinderen P, Challet-Bouju G. Dopamine Agonists and Impulse Control Disorders: A Complex Association. Drug Saf 2018; 41:19-75. [PMID: 28861870 PMCID: PMC5762774 DOI: 10.1007/s40264-017-0590-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Impulse control disorders (ICDs) are a well-known adverse effect of dopamine agonists (DAAs). This critical review aims to summarize data on the prevalence and factors associated with the development of an ICD simultaneous to DAA use. A search of two electronic databases was completed from inception to July 2017. The search terms were medical subject headings (MeSH) terms including “dopamine agonists” AND “disruptive disorders”, “impulse control disorders”, or “conduct disorders”. Articles had to fulfill the following criteria to be included: (i) the target problem was an ICD; (ii) the medication was a dopaminergic drug; and (iii) the article was an original article. Of the potential 584 articles, 90 met the criteria for inclusion. DAAs were used in Parkinson’s disease (PD), restless legs syndrome (RLS) or prolactinoma. The prevalence of ICDs ranged from 2.6 to 34.8% in PD patients, reaching higher rates in specific PD populations; a lower prevalence was found in RLS patients. We found only two studies about prolactinoma. The most robust findings relative to the factors associated with the development of an ICD included the type of DAA, the dosage, male gender, a younger age, a history of psychiatric symptoms, an earlier onset of disease, a longer disease duration, and motor complications in PD. This review suggests that DAA use is associated with an increased risk in the occurrence of an ICD, under the combined influence of various factors. Guidelines to help prevent and to treat ICDs when required do exist, although further studies are required to better identify patients with a predisposition.
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Affiliation(s)
- Marie Grall-Bronnec
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France.
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France.
| | - Caroline Victorri-Vigneau
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
- Department of Pharmacology, CHU Nantes, Center for Evaluation and Information on Pharmacodependence, Nantes, France
| | - Yann Donnio
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Juliette Leboucher
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Morgane Rousselet
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
| | - Elsa Thiabaud
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Nicolas Zreika
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Pascal Derkinderen
- Department of Neurology, CHU Nantes, Nantes, France
- Université de Nantes, Inserm U913, Nantes, France
| | - Gaëlle Challet-Bouju
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
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31
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Effects of Antiparkinson Medication on Cognition in Parkinson's Disease: A Systematic Review. Can J Neurol Sci 2018; 45:375-404. [PMID: 29747716 DOI: 10.1017/cjn.2018.21] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study aimed to systematically review the effects of currently prescribed antiparkinson medication on cognition in patients with mild-to-moderate Parkinson's disease (PD) who were either cognitively intact or mildly impaired. METHODS English- and French-language studies published between 1969 and 2017 were accessed via MedLine, PsychNET, EMBASE and EBSCO databases. Methodological quality (MQ) was evaluated with the quality assessment instrument of the Cochrane Collaboration Depression, Anxiety and Neurosis Review (scores from 0% to 44% indicate very low quality; scores from 45% to 64% indicate low quality; scores from 65% to 84% indicate medium quality; and scores from 85% to 100% indicate high quality). Hedges' g and Student's t-test were performed on all cognitive outcome measures reported. RESULTS In total, 14 studies assessed the cognitive effects of levodopa (L-D), pramipexole (PRX), selegiline (SEL) and rasagiline (RAS) in mild-to-moderate non-demented PD patients. The MQ was overall low, with an average score of 49.1%. Results for L-D showed deleterious effects on a test of cognitive inhibition, as well as benefits on tests of attention/processing speed/working memory, executive functions and episodic memory. Pramipexole was associated with a worsening of episodic memory and impulse control. Results on SEL indicated a deterioration of global cognition over time and of concept formation. Rasagiline had some benefits on working memory and verbal fluency. CONCLUSION Antiparkinson medications can have deleterious (L-D; PRX; SEL) and beneficial (L-D; RAS) effects on cognition. However, randomized double-blind placebo-controlled trials with larger sample sizes are required to better elucidate this issue.
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32
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Impulse control disorders in Parkinson's disease. J Neural Transm (Vienna) 2018; 125:1299-1312. [PMID: 29511827 DOI: 10.1007/s00702-018-1870-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/27/2018] [Indexed: 10/17/2022]
Abstract
Impulse control disorders (ICD) are frequent side effects of dopamine replacement therapy (DRT) used in Parkinson's disease (PD) with devastating consequences on the patients and caregivers. ICD are behavioural addictions including compulsive gambling, shopping, sexual behaviour, and binge eating that are mainly associated with dopamine D2/D3 agonists. Their management is a real clinical challenge due to the lack of therapeutic alternative. Clinical studies have identified demographic and clinical risk factors for ICD such as younger age at disease onset, male gender, prior history of depression or substance abuse, REM sleep behaviour disorders and higher rate of dyskinesia. PD patients with ICD may also have a specific pattern of dopaminergic denervation in the ventral striatum. Specific evaluation tools have now been designed to better evaluate the severity and impact of ICD in PD. Patients with ICD display altered processing of reward and loss, and decisional bias associated with altered activity in cortical and subcortical areas such as the orbitofrontal cortex, amygdala, insula, anterior cingular cortex, and ventral striatum. Preclinical studies have demonstrated that D2/D3 agonists induce impairments in behavioural processes likely relevant to ICD such as risk-taking behaviour, preference for uncertainty, perseverative responding and sustained drive to engage in gambling-like behaviour. Whether interactions between dopamine denervation and DRT significantly contribute to the pathogenesis of ICD remains poorly understood so far, although features unique to PD have been identified in patients with ICD. Large-scale longitudinal studies are needed to better identify subjects with increased risk to develop ICD and develop therapeutic options.
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33
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Yang XQ, Lauzon B, Seergobin KN, MacDonald PA. Dopaminergic Therapy Increases Go Timeouts in the Go/No-Go Task in Patients with Parkinson's Disease. Front Hum Neurosci 2018; 11:642. [PMID: 29354045 PMCID: PMC5758505 DOI: 10.3389/fnhum.2017.00642] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 12/18/2017] [Indexed: 11/13/2022] Open
Abstract
Parkinson's disease (PD) is characterized by resting tremor, rigidity and bradykinesia. Dopaminergic medications such as L-dopa treat these motor symptoms, but can have complex effects on cognition. Impulse control is an essential cognitive function. Impulsivity is multifaceted in nature. Motor impulsivity involves the inability to withhold pre-potent, automatic, erroneous responses. In contrast, cognitive impulsivity refers to improper risk-reward assessment guiding behavior. Informed by our previous research, we anticipated that dopaminergic therapy would decrease motor impulsivity though it is well known to enhance cognitive impulsivity. We employed the Go/No-go paradigm to assess motor impulsivity in PD. Patients with PD were tested using a Go/No-go task on and off their normal dopaminergic medication. Participants completed cognitive, mood, and physiological measures. PD patients on medication had a significantly higher proportion of Go trial Timeouts (i.e., trials in which Go responses were not completed prior to a deadline of 750 ms) compared to off medication (p = 0.01). No significant ON-OFF differences were found for Go trial or No-go trial response times (RTs), or for number of No-go errors. We interpret that dopaminergic therapy induces a more conservative response set, reflected in Go trial Timeouts in PD patients. In this way, dopaminergic therapy decreased motor impulsivity in PD patients. This is in contrast to the widely recognized effects of dopaminergic therapy on cognitive impulsivity leading in some patients to impulse control disorders. Understanding the nuanced effects of dopaminergic treatment in PD on cognitive functions such as impulse control will clarify therapeutic decisions.
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Affiliation(s)
- Xue Q. Yang
- MacDonald Lab, Brain and Mind Institute, University of Western Ontario, London, ON, Canada
| | - Brian Lauzon
- MacDonald Lab, Brain and Mind Institute, University of Western Ontario, London, ON, Canada
| | - Ken N. Seergobin
- MacDonald Lab, Brain and Mind Institute, University of Western Ontario, London, ON, Canada
| | - Penny A. MacDonald
- MacDonald Lab, Brain and Mind Institute, University of Western Ontario, London, ON, Canada
- Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
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34
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Criaud M, Poisson A, Thobois S, Metereau E, Redouté J, Ibarrola D, Baraduc P, Broussolle E, Strafella AP, Ballanger B, Boulinguez P. Slowness in Movement Initiation is Associated with Proactive Inhibitory Network Dysfunction in Parkinson's Disease. JOURNAL OF PARKINSONS DISEASE 2017; 6:433-40. [PMID: 27061065 DOI: 10.3233/jpd-150750] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Impairment in initiating movements in PD might be related to executive dysfunction associated with abnormal proactive inhibitory control, a pivotal mechanism consisting in gating movement initiation in uncertain contexts. OBJECTIVE Testing this hypothesis on the basis of direct neural-based evidence. METHODS Twelve PD patients on antiparkinsonian medication and fifteen matched healthy controls performed a simple reaction time task during event-related functional MRI scanning. RESULTS For all subjects, the level of activation of SMA was found to predict RT on a trial-by-trial basis. The increase in movement initiation latency observed in PD patients with regard to controls was associated with pre-stimulus BOLD increases within several nodes of the proactive inhibitory network (caudate nucleus, precuneus, thalamus). CONCLUSIONS These results provide physiological data consistent with impaired control of proactive inhibition over motor initiation in PD. Patients would be locked into a mode of control maintaining anticipated inhibition over willed movements even when the situation does not require action restraint. The functional and neurochemical bases of brain activity associated with executive settings need to be addressed thoroughly in future studies to better understand disabling symptoms that have few therapeutic options like akinesia.
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Affiliation(s)
- Marion Criaud
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France.,Morton and Gloria Shulman Movement Disorder Unit & E.J. Safra Parkinson Disease Program, Toronto Western Hospital, UHN, University of Toronto, Ontario, Canada.,Research Imaging Centre, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada.,Division of Brain, Imaging and Behaviour -Systems Neuroscience, Toronto Western Research Institute, UHN, University of Toronto, Ontario, Canada
| | - Alice Poisson
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France.,Hospices civils de Lyon, hôpital neurologique Pierre Wertheimer, Bron, France
| | - Stéphane Thobois
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France.,Hospices civils de Lyon, hôpital neurologique Pierre Wertheimer, Bron, France
| | - Elise Metereau
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France
| | | | | | - Pierre Baraduc
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France
| | - Emmanuel Broussolle
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France.,Hospices civils de Lyon, hôpital neurologique Pierre Wertheimer, Bron, France
| | - Antonio P Strafella
- Morton and Gloria Shulman Movement Disorder Unit & E.J. Safra Parkinson Disease Program, Toronto Western Hospital, UHN, University of Toronto, Ontario, Canada.,Research Imaging Centre, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada.,Division of Brain, Imaging and Behaviour -Systems Neuroscience, Toronto Western Research Institute, UHN, University of Toronto, Ontario, Canada
| | - Bénédicte Ballanger
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France.,INSERM, U1028, Lyon Neuroscience Research Center, Neuroplasticity and Neuropathology of Olfactory Perception Team, Lyon, France.,CNRS, UMR5292, Lyon Neuroscience Research Center, Neuroplasticity and Neuropathology of Olfactory Perception Team, Lyon, France
| | - Philippe Boulinguez
- Université de Lyon,, Lyon, France.,Université Lyon I, Villeurbanne, France.,Centre de Neuroscience Cognitive, Bron, France
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Caspers J, Mathys C, Hoffstaedter F, Südmeyer M, Cieslik EC, Rubbert C, Hartmann CJ, Eickhoff CR, Reetz K, Grefkes C, Michely J, Turowski B, Schnitzler A, Eickhoff SB. Differential Functional Connectivity Alterations of Two Subdivisions within the Right dlPFC in Parkinson's Disease. Front Hum Neurosci 2017; 11:288. [PMID: 28611616 PMCID: PMC5447710 DOI: 10.3389/fnhum.2017.00288] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 05/16/2017] [Indexed: 02/02/2023] Open
Abstract
Patients suffering from Parkinson's disease (PD) often show impairments in executive function (EF) like decision-making and action control. The right dorsolateral prefrontal cortex (dlPFC) has been strongly implicated in EF in healthy subjects and has repeatedly been reported to show alterations related to EF impairment in PD. Recently, two key regions for cognitive action control have been identified within the right dlPFC by co-activation based parcellation. While the posterior region is engaged in rather basal EF like stimulus integration and working memory, the anterior region has a more abstract, supervisory function. To investigate whether these functionally distinct subdivisions of right dlPFC are differentially affected in PD, we analyzed resting-state functional connectivity (FC) in 39 PD patients and 44 age- and gender-matched healthy controls. Patients were examined both after at least 12 h withdrawal of dopaminergic drugs (OFF) and under their regular dopaminergic medication (ON). We found that only the posterior right dlPFC subdivision shows FC alterations in PD, while the anterior part remains unaffected. PD-related decreased FC with posterior right dlPFC was found in the bilateral medial posterior parietal cortex (mPPC) and left dorsal premotor region (PMd) in the OFF state. In the medical ON, FC with left PMd normalized, while decoupling with bilateral mPPC remained. Furthermore, we observed increased FC between posterior right dlPFC and the bilateral dorsomedial prefrontal cortex (dmPFC) in PD in the ON state. Our findings point to differential disturbances of right dlPFC connectivity in PD, which relate to its hierarchical organization of EF processing by stronger affecting the functionally basal posterior aspect than the hierarchically higher anterior part.
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Affiliation(s)
- Julian Caspers
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University DüsseldorfDüsseldorf, Germany.,Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany
| | - Christian Mathys
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University DüsseldorfDüsseldorf, Germany
| | - Felix Hoffstaedter
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany
| | - Martin Südmeyer
- Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany.,Department of Neurology, Medical Faculty, Center for Movement Disorders and Neuromodulation, Heinrich-Heine-UniversityDüsseldorf, Germany
| | - Edna C Cieslik
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany
| | - Christian Rubbert
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University DüsseldorfDüsseldorf, Germany
| | - Christian J Hartmann
- Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany.,Department of Neurology, Medical Faculty, Center for Movement Disorders and Neuromodulation, Heinrich-Heine-UniversityDüsseldorf, Germany
| | - Claudia R Eickhoff
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen UniversityAachen, Germany
| | - Kathrin Reetz
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,JARA BRAIN and Department of Neurology, RWTH Aachen UniversityAachen, Germany
| | - Christian Grefkes
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,Department of Neurology, University of CologneCologne, Germany
| | - Jochen Michely
- Department of Neurology, University of CologneCologne, Germany
| | - Bernd Turowski
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University DüsseldorfDüsseldorf, Germany
| | - Alfons Schnitzler
- Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany.,Department of Neurology, Medical Faculty, Center for Movement Disorders and Neuromodulation, Heinrich-Heine-UniversityDüsseldorf, Germany
| | - Simon B Eickhoff
- Research Centre Jülich, Institute of Neuroscience and Medicine (INM-1, INM-3, INM-11)Jülich, Germany.,Medical Faculty, Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine-UniversityDüsseldorf, Germany
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Abstract
After participating in this activity, learners should be better able to:• Assess the neuropsychological literature on decision making and the medical and legal assessment of capacity in patients with dementia• Identify the limitations of integrating findings from decision-making research into capacity assessments for patients with dementia ABSTRACT: Medical and legal professionals face the challenge of assessing capacity and competency to make medical, legal, and financial decisions in dementia patients with impaired decision making. While such assessments have classically focused on the capacity for complex reasoning and executive functions, research in decision making has revealed that motivational and metacognitive processes are also important. We first briefly review the neuropsychological literature on decision making and on the medical and legal assessment of capacity. Next, we discuss the limitations of integrating findings from decision-making research into capacity assessments, including the group-to-individual inference problem, the unclear role of neuroimaging in capacity assessments, and the lack of capacity measures that integrate important facets of decision making. Finally, we present several case examples where we attempt to demonstrate the potential benefits and important limitations of using decision-making research to aid in capacity determinations.
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Yang XQ, Glizer D, Vo A, Seergobin KN, MacDonald PA. Pramipexole Increases Go Timeouts but Not No-go Errors in Healthy Volunteers. Front Hum Neurosci 2016; 10:523. [PMID: 27803657 PMCID: PMC5067488 DOI: 10.3389/fnhum.2016.00523] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 10/03/2016] [Indexed: 12/03/2022] Open
Abstract
Parkinson's disease (PD) is characterized by motor symptoms, such as resting tremor, bradykinesia and rigidity, but also features non-motor complications. PD patients taking dopaminergic therapy, such as levodopa but especially dopamine agonists (DAs), evidence an increase in impulse control disorders (ICDs), suggesting a link between dopaminergic therapy and impulsive pursuit of pleasurable activities. However, impulsivity is a multifaceted construct. Motor impulsivity refers to the inability to overcome automatic responses or cancel pre-potent responses. Previous research has suggested that PD patients, on dopaminergic medications, have decreased motor impulsivity. Whether effects on impulsivity are main effects of dopaminergic therapies or are specific to PD is unclear. Using a Go No-go task, we investigated the effect of a single dose of the DA pramipexole on motor impulsivity in healthy participants. The Go No-go task consisted of Go trials, for which keystroke responses were made as quickly as possible, and lesser frequency No-go trials, on which motor responses were to be inhibited. We hypothesized that pramipexole would decrease motor impulsivity. This would manifest as: (a) fewer No-go errors (i.e., fewer responses on trials in which a response ought to have been inhibited); and (b) more timed-out Go trials (i.e., more trials on which the deadline elapsed before a decision to make a keystroke occurred). Healthy volunteers were treated with either 0.5 mg of pramipexole or a standard placebo (randomly determined). During the 2-h wait period, they completed demographic, cognitive, physiological and affective measures. The pramipexole group had significantly more Go timeouts (p < 0.05) compared to the placebo group though they did not differ in percent of No-go errors. In contrast to its effect on pursuit of pleasurable activities, pramipexole did not increase motor impulsivity. In fact, in line with findings in PD and addiction, dopaminergic therapy might increase motor impulse control. In these patient groups, by enhancing function of the dorsal striatum (DS) of the basal ganglia in contrast to its effect on impulsive pursuit of pleasurable activities. These findings have implications for use and effects of pramipexole in PD as well as in other conditions (e.g., restless leg, dystonia, depression, addiction-related problems).
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Affiliation(s)
- Xue Qing Yang
- MacDonald Lab, Brain and Mind Institute, University of Western OntarioLondon, ON, Canada
| | - Daniel Glizer
- MacDonald Lab, Brain and Mind Institute, University of Western OntarioLondon, ON, Canada
| | - Andrew Vo
- MacDonald Lab, Brain and Mind Institute, University of Western OntarioLondon, ON, Canada
| | - Ken N. Seergobin
- MacDonald Lab, Brain and Mind Institute, University of Western OntarioLondon, ON, Canada
| | - Penny A. MacDonald
- MacDonald Lab, Brain and Mind Institute, University of Western OntarioLondon, ON, Canada
- Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, University of Western OntarioLondon, ON, Canada
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Multi-facetted impulsivity following nigral degeneration and dopamine replacement therapy. Neuropharmacology 2016; 109:69-77. [PMID: 27216859 PMCID: PMC5405054 DOI: 10.1016/j.neuropharm.2016.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 11/24/2022]
Abstract
Impulse control disorders (ICDs) are debilitating side effects of dopamine replacement therapy (DRT) in Parkinson’s disease (PD) that severely affect the quality of life of patients. While DRT, the pattern and extent of neurodegeneration, and prodromic factors of vulnerability (e.g. impulsivity) have all been hypothesized to play a role in the development of ICDs, their respective, and potentially interacting, contributions remain to be established. High impulsive (HI), Intermediate (Int) or low impulsive (LI) rats were identified based on their performance in both a differential reinforcement of low rate of responding (DRL) and a fixed consecutive number (FCN) schedules, that operationalize two independent facets of impulsivity, waiting and action inhibition (motor impulsivity). We investigated whether high impulsivity trait influenced the progressive development of a parkinsonian state induced by viral-mediated overexpression of α-synuclein, and whether impulsivity trait and nigrostriatal neurodegeneration independently or jointly influenced the effects of DRT on impulse control. α-synuclein-induced nigrostriatal neurodegeneration increased both waiting and motor impulsivity. The D2/D3 dopamine receptor agonist pramipexole exacerbated motor impulsivity more than waiting. However, the pramipexole-induced increase in waiting impulsivity observed in both sham and lesioned rats, was more pronounced in HI lesioned rats, which displayed a restricted α-synuclein-induced dopaminergic neurodegeneration. Thus, a PD-like nigrostriatal lesion increases both motor and waiting impulsivity, but its interaction with a pre-existing impulsivity trait, which, at the cellular level, confers resilience to dopaminergic neurodegeneration, worsens the detrimental effects of D2/D3 dopamine receptor agonists on inhibitory control. Degeneration of the substantia nigra increases both waiting and action impulsivity. Reduced alpha-synuclein-induced degeneration in high impulsive rats. Pramipexole increases waiting and action impulsivity in sham and lesioned rats. Exacerbated effect of pramipexole in high impulsive vs. low impulsive lesioned rats.
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Seidel UK, Gronewold J, Wicking M, Bellebaum C, Hermann DM. Vascular Risk Factors and Diseases Modulate Deficits of Reward-Based Reversal Learning in Acute Basal Ganglia Stroke. PLoS One 2016; 11:e0155267. [PMID: 27163585 PMCID: PMC4862682 DOI: 10.1371/journal.pone.0155267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 03/29/2016] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Besides motor function, the basal ganglia have been implicated in feedback learning. In patients with chronic basal ganglia infarcts, deficits in reward-based reversal learning have previously been described. METHODS We re-examined the acquisition and reversal of stimulus-stimulus-reward associations and acquired equivalence in eleven patients with acute basal ganglia stroke (8 men, 3 women; 57.8±13.3 years), whose performance was compared eleven healthy subjects of comparable age, sex distribution and education, who were recruited outside the hospital. Eleven hospitalized patients with a similar vascular risk profile as the stroke patients but without stroke history served as clinical control group. RESULTS In a neuropsychological assessment 7±3 days post-stroke, verbal and spatial short-term and working memory and inhibition control did not differ between groups. Compared with healthy subjects, control patients with vascular risk factors exhibited significantly reduced performance in the reversal phase (F[2,30] = 3.47; p = 0.044; post-hoc comparison between risk factor controls and healthy controls: p = 0.030), but not the acquisition phase (F[2,30] = 1.01; p = 0.376) and the acquired equivalence (F[2,30] = 1.04; p = 0.367) tasks. In all tasks, the performance of vascular risk factor patients closely resembled that of basal ganglia stroke patients. Correlation studies revealed a significant association of the number of vascular risk factors with reversal learning (r = -0.33, p = 0.012), but not acquisition learning (r = -0.20, p = 0.121) or acquired equivalence (r = -0.22, p = 0.096). CONCLUSIONS The previously reported impairment of reward-based learning may be attributed to vascular risk factors and associated diseases, which are enriched in stroke patients. This study emphasizes the necessity of appropriate control subjects in cognition studies.
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Affiliation(s)
- Ulla K Seidel
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany
| | - Janine Gronewold
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany
| | - Manon Wicking
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany
| | - Christian Bellebaum
- Institute of Experimental Psychology, Heinrich Heine University, Düsseldorf, Germany
| | - Dirk M Hermann
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany
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40
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Aznar S, Hervig MES. The 5-HT2A serotonin receptor in executive function: Implications for neuropsychiatric and neurodegenerative diseases. Neurosci Biobehav Rev 2016; 64:63-82. [DOI: 10.1016/j.neubiorev.2016.02.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 11/05/2015] [Accepted: 02/08/2016] [Indexed: 02/07/2023]
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Abstract
PURPOSE OF REVIEW Impulse control behaviours (ICBs) are a frequent comorbidity for patients with Parkinson's disease. They consist of impulse control disorders, dopamine dysregulation syndrome, and punding. The field continues to evolve in the understanding of impulsivity and assessment of risk factors in the development of these behaviours and their appropriate management in patients with Parkinson's disease. RECENT FINDINGS Impulsivity is a multifaceted concept that is surprisingly common in untreated patients with Parkinson's disease. The incidence of ICBs increases with demographic, clinical, and biochemical risk factors. Treatments rely on reduction of dopamine agonists with exception of cognitive behavioural therapy and possibly repetitive transcranial magnetic stimulation. SUMMARY Reduction of dopamine agonist dose is the mainstay of treatment of ICBs. Other forms of dopaminergic treatment such as deep brain stimulation or jejunal infusion are alternative treatments but may be complicated by dopamine agonist withdrawal syndrome. Other therapies show promise but data are insufficient to suggest their regular use.
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42
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Buoli M, Caldiroli A, Altamura AC. Psychiatric Conditions in Parkinson Disease: A Comparison With Classical Psychiatric Disorders. J Geriatr Psychiatry Neurol 2016; 29:72-91. [PMID: 26377851 DOI: 10.1177/0891988715606233] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Psychiatric conditions often complicate the outcome of patients affected by Parkinson disease (PD), but they differ from classical psychiatric disorders in terms of underlying biological mechanisms, clinical presentation, and treatment response. The purpose of the present review is to illustrate the biological and clinical aspects of psychiatric conditions associated with PD, with particular reference to the differences with respect to classical psychiatric disorders. A careful search of articles on main databases was performed in order to obtain a comprehensive review about the main psychiatric conditions associated with PD. A manual selection of the articles was then performed in order to consider only those articles that concerned with the topic of the review. Psychiatric conditions in patients with PD present substantial differences with respect to classical psychiatric disorders. Their clinical presentation does not align with the symptom profiles represented by Diagnostic and Statistical Manual for Mental Disorders and International Classification of Diseases. Furthermore, psychiatry treatment guidelines are of poor help in managing psychiatric symptoms of patients with PD. Specific diagnostic tools and treatment guidelines are needed to allow early diagnosis and adequate treatment of psychiatric conditions in comorbidity with PD.
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Affiliation(s)
- Massimiliano Buoli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Alice Caldiroli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Alfredo Carlo Altamura
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy
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43
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Zemankova P, Lungu O, Bares M. Psychosocial Modulators of Motor Learning in Parkinson's Disease. Front Hum Neurosci 2016; 10:74. [PMID: 26973495 PMCID: PMC4770022 DOI: 10.3389/fnhum.2016.00074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 02/15/2016] [Indexed: 12/22/2022] Open
Abstract
Using the remarkable overlap between brain circuits affected in Parkinson’s disease (PD) and those underlying motor sequence learning, we may improve the effectiveness of motor rehabilitation interventions by identifying motor learning facilitators in PD. For instance, additional sensory stimulation and task cueing enhanced motor learning in people with PD, whereas exercising using musical rhythms or console computer games improved gait and balance, and reduced some motor symptoms, in addition to increasing task enjoyment. Yet, despite these advances, important knowledge gaps remain. Most studies investigating motor learning in PD used laboratory-specific tasks and equipment, with little resemblance to real life situations. Thus, it is unknown whether similar results could be achieved in more ecological setups and whether individual’s task engagement could further improve motor learning capacity. Moreover, the role of social interaction in motor skill learning process has not yet been investigated in PD and the role of mind-set and self-regulatory mechanisms have been sporadically examined. Here, we review evidence suggesting that these psychosocial factors may be important modulators of motor learning in PD. We propose their incorporation in future research, given that it could lead to development of improved non-pharmacological interventions aimed to preserve or restore motor function in PD.
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Affiliation(s)
- Petra Zemankova
- First Department of Neurology, Faculty of Medicine of the Masaryk University and St. Anne's University HospitalBrno, Czech Republic; Behavioural and Social Neuroscience Research Group, Central European Institute of Technology-Masaryk UniversityBrno, Czech Republic
| | - Ovidiu Lungu
- Department of Psychiatry, University of Montreal and Centre de recherche de l'Institut Universitaire de Gériatrie de Montreal Montreal, QC, Canada
| | - Martin Bares
- First Department of Neurology, Faculty of Medicine of the Masaryk University and St. Anne's University HospitalBrno, Czech Republic; Behavioural and Social Neuroscience Research Group, Central European Institute of Technology-Masaryk UniversityBrno, Czech Republic; Department of Neurology, University of MinnesotaMinneapolis, MN, USA
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44
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MacDonald HJ, Byblow WD. Does response inhibition have pre- and postdiagnostic utility in Parkinson's disease? J Mot Behav 2016; 47:29-45. [PMID: 25575221 DOI: 10.1080/00222895.2014.941784] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Parkinson's disease (Pd) is the second most prevalent degenerative neurological condition worldwide. Improving and sustaining quality of life is an important goal for Parkinson's patients. Key areas of focus to achieve this goal include earlier diagnosis and individualized treatment. In this review the authors discuss impulse control in Pd and examine how measures of impulse control from a response inhibition task may provide clinically useful information (a) within an objective test battery to aid earlier diagnosis of Pd and (b) in postdiagnostic Pd, to better identify individuals at risk of developing impulse control disorders with dopaminergic medication.
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Affiliation(s)
- Hayley J MacDonald
- a Department of Sport and Exercise Science , University of Auckland , New Zealand
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45
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Yates JR, Darna M, Beckmann JS, Dwoskin LP, Bardo MT. Individual differences in impulsive action and dopamine transporter function in rat orbitofrontal cortex. Neuroscience 2016; 313:122-9. [PMID: 26608122 PMCID: PMC4695254 DOI: 10.1016/j.neuroscience.2015.11.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/24/2015] [Accepted: 11/16/2015] [Indexed: 11/21/2022]
Abstract
Impulsivity, which can be subdivided into impulsive action and impulsive choice, is implicated as a factor underlying drug abuse vulnerability. Although previous research has shown that dopamine (DA) systems in prefrontal cortex are involved in impulsivity and substance abuse, it is not known if inherent variation in DA transporter (DAT) function contributes to impulsivity. The current study determined if individual differences in either impulsive action or impulsive choice are related to DAT function in orbitofrontal (OFC) and/or medial prefrontal cortex (mPFC). Rats were first tested both for impulsive action in a cued go/no-go task and for impulsive choice in a delay-discounting task. Following behavioral evaluation, in vitro [(3)H]DA uptake assays were performed in OFC and mPFC isolated from individual rats. Vmax in OFC, but not mPFC, was correlated with performance in the cued go/no-go task, with decreased OFC DAT function being associated with high impulsive action. In contrast, Vmax in OFC and mPFC was not correlated with performance in the delay-discounting task. The current results demonstrate that impulsive behavior in cued go/no-go performance is associated with decreased DAT function in OFC, suggesting that hyperdopaminergic tone in this prefrontal subregion mediates, at least in part, increased impulsive action.
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Affiliation(s)
- J R Yates
- Department of Psychology, University of Kentucky, Lexington, KY 40536, USA; Department of Psychological Science, Northern Kentucky University, Highland Heights, KY 41099, USA
| | - M Darna
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA
| | - J S Beckmann
- Department of Psychology, University of Kentucky, Lexington, KY 40536, USA
| | - L P Dwoskin
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA
| | - M T Bardo
- Department of Psychology, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA.
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46
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Houeto JL, Magnard R, Dalley JW, Belin D, Carnicella S. Trait Impulsivity and Anhedonia: Two Gateways for the Development of Impulse Control Disorders in Parkinson's Disease? Front Psychiatry 2016; 7:91. [PMID: 27303314 PMCID: PMC4884740 DOI: 10.3389/fpsyt.2016.00091] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/17/2016] [Indexed: 12/03/2022] Open
Abstract
Apathy and impulsivity are two major comorbid syndromes of Parkinson's disease (PD) that may represent two extremes of a behavioral spectrum modulated by dopamine-dependent processes. PD is characterized by a progressive loss of dopaminergic neurons in the substantia nigra pars compacta to which are attributed the cardinal motor symptoms of the disorder. Dopamine replacement therapy (DRT), used widely to treat these motor symptoms, is often associated with deficits in hedonic processing and motivation, including apathy and depression, as well as impulse control disorders (ICDs). ICDs comprise pathological gambling, hypersexuality, compulsive shopping, binge eating, compulsive overuse of dopaminergic medication, and punding. More frequently observed in males with early onset PD, ICDs are associated not only with comorbid affective symptoms, such as depression and anxiety, but also with behavioral traits, such as novelty seeking and impulsivity, as well as with personal or familial history of alcohol use. This constellation of associated risk factors highlights the importance of inter-individual differences in the vulnerability to develop comorbid psychiatric disorders in PD patients. Additionally, withdrawal from DRT in patients with ICDs frequently unmasks a severe apathetic state, suggesting that apathy and ICDs may be caused by overlapping neurobiological mechanisms within the cortico-striato-thalamo-cortical networks. We suggest that altered hedonic and impulse control processes represent distinct prodromal substrates for the development of these psychiatric symptoms, the etiopathogenic mechanisms of which remain unknown. Specifically, we argue that deficits in hedonic and motivational states and impulse control are mediated by overlapping, yet dissociable, neural mechanisms that differentially interact with DRT to promote the emergence of ICDs in vulnerable individuals. Thus, we provide a novel heuristic framework for basic and clinical research to better define and treat comorbid ICDs in PD.
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Affiliation(s)
- Jean-Luc Houeto
- Service de Neurologie, CIC-INSERM 1402, CHU de Poitiers, Université de Poitiers , Poitiers , France
| | - Robin Magnard
- INSERM U1216, Grenoble Institut des Neurosciences (GIN), University Grenoble Alpes , Grenoble , France
| | - Jeffrey W Dalley
- Department of Psychology, University of Cambridge, Cambridge, UK; Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - David Belin
- Department of Pharmacology, University of Cambridge , Cambridge , UK
| | - Sebastien Carnicella
- INSERM U1216, Grenoble Institut des Neurosciences (GIN), University Grenoble Alpes , Grenoble , France
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Adolescent methylphenidate treatment differentially alters adult impulsivity and hyperactivity in the Spontaneously Hypertensive Rat model of ADHD. Pharmacol Biochem Behav 2015; 141:66-77. [PMID: 26657171 DOI: 10.1016/j.pbb.2015.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 09/30/2015] [Accepted: 12/01/2015] [Indexed: 12/30/2022]
Abstract
Impulsivity and hyperactivity are two facets of attention deficit/hyperactivity disorder (ADHD). Impulsivity is expressed as reduced response inhibition capacity, an executive control mechanism that prevents premature execution of an intermittently reinforced behavior. During methylphenidate treatment, impulsivity and hyperactivity are decreased in adolescents with ADHD, but there is little information concerning levels of impulsivity and hyperactivity in adulthood after adolescent methylphenidate treatment is discontinued. The current study evaluated impulsivity, hyperactivity as well as cocaine sensitization during adulthood after adolescent methylphenidate treatment was discontinued in the Spontaneously Hypertensive Rat (SHR) model of ADHD. Treatments consisted of oral methylphenidate (1.5mg/kg) or water vehicle provided Monday-Friday from postnatal days 28-55. During adulthood, impulsivity was measured in SHR and control strains (Wistar Kyoto and Wistar rats) using differential reinforcement of low rate (DRL) schedules. Locomotor activity and cocaine sensitization were measured using the open-field assay. Adult SHR exhibited decreased efficiency of reinforcement under the DRL30 schedule and greater levels of locomotor activity and cocaine sensitization compared to control strains. Compared to vehicle, methylphenidate treatment during adolescence reduced hyperactivity in adult SHR, maintained the lower efficiency of reinforcement, and increased burst responding under DRL30. Cocaine sensitization was not altered following adolescent methylphenidate in adult SHR. In conclusion, adolescent treatment with methylphenidate followed by discontinuation in adulthood had a positive benefit by reducing hyperactivity in adult SHR rats; however, increased burst responding under DRL compared to SHR given vehicle, i.e., elevated impulsivity, constituted an adverse consequence associated with increased risk for cocaine abuse liability.
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Boileau I, Nakajima S, Payer D. Imaging the D3 dopamine receptor across behavioral and drug addictions: Positron emission tomography studies with [(11)C]-(+)-PHNO. Eur Neuropsychopharmacol 2015; 25:1410-20. [PMID: 26141509 DOI: 10.1016/j.euroneuro.2015.06.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 04/07/2015] [Accepted: 06/12/2015] [Indexed: 12/21/2022]
Abstract
Chronic drug use has been associated with dopaminergic abnormalities, detectable in humans with positron emission tomography (PET). Among these, a hallmark feature is low D2 dopamine receptor availability, which has been linked to clinical outcomes, but has not yet translated into a therapeutic strategy. The D3 dopamine receptor on the other hand has gained increasing attention, as, in contrast to D2, chronic exposure to drugs has been shown to up-regulate this receptor subtype in preclinical models of addiction-a phenomenon linked to dopamine system sensitization and drug-seeking. The present article summarizes the literature to date in humans, suggesting that the D3 receptor may indeed contribute to core features of addiction such as impulsiveness and cognitive impairment. A particularly useful tool in investigating this question is the PET imaging probe [(11)C]-(+)-PHNO, which binds to D2/3 dopamine receptors but has preferential affinity for D3. This technique has been used to demonstrate D3 up-regulation in humans, and can be applied to assess pharmacological interventions for development of D3-targeted strategies in addiction treatment.
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Affiliation(s)
- Isabelle Boileau
- Addiction Imaging Research Group, Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada; Campbell Family Mental Health Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
| | - Shinichiro Nakajima
- Multimodal Imaging Group & Geriatric Mental Health Division, Centre for Addiction and Mental Health, Toronto, ON, Canada; Keio University, School of Medicine, Department of Neuropsychiatry, Tokyo, Japan
| | - Doris Payer
- Addiction Imaging Research Group, Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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Aracil-Bolaños I, Strafella AP. Molecular imaging and neural networks in impulse control disorders in Parkinson's disease. Parkinsonism Relat Disord 2015; 22 Suppl 1:S101-5. [PMID: 26298389 DOI: 10.1016/j.parkreldis.2015.08.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 08/02/2015] [Accepted: 08/05/2015] [Indexed: 11/25/2022]
Abstract
Impulse control disorders (ICDs) may arise in Parkinson's disease (PD) in relation to the use of dopamine agonists (DA). A dysfunction of reward circuits is considered the main underlying mechanism. Neuroimaging has been largely used in this setting to understand the structure of the reward system and its abnormalities brought by exogenous stimulation in PD. Dopaminergic changes, such as increased dopamine release, reduced dopamine transporter activity and other changes, have been shown to be a consistent feature of ICDs in PD. Beyond the striatum, alterations of prefrontal cortical function may also impact an individuals' propensity for impulsivity. Neuroimaging is advancing our knowledge of the mechanisms involved in the development of these behavioral addictions. An increased understanding of these disorders may lead to the discovery of new therapeutic targets, or the identification of risk factors for the development of these disorders.
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Affiliation(s)
- I Aracil-Bolaños
- Morton and Gloria Shulman Movement Disorder Unit & Edmond J. Safra Program in Parkinson Disease, Toronto Western Hospital, UHN, University of Toronto, Ontario, Canada; Research Imaging Centre, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada; Division of Brain, Imaging and Behaviour - Systems Neuroscience, Toronto Western Research Institute, UHN, University of Toronto, Ontario, Canada
| | - A P Strafella
- Morton and Gloria Shulman Movement Disorder Unit & Edmond J. Safra Program in Parkinson Disease, Toronto Western Hospital, UHN, University of Toronto, Ontario, Canada; Research Imaging Centre, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada; Division of Brain, Imaging and Behaviour - Systems Neuroscience, Toronto Western Research Institute, UHN, University of Toronto, Ontario, Canada.
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Huang YT, Georgiev D, Foltynie T, Limousin P, Speekenbrink M, Jahanshahi M. Different effects of dopaminergic medication on perceptual decision-making in Parkinson's disease as a function of task difficulty and speed–accuracy instructions. Neuropsychologia 2015; 75:577-87. [DOI: 10.1016/j.neuropsychologia.2015.07.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 11/29/2022]
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