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Béreau M, Garnier-Allain A, Servant M. Clinically established early Parkinson's disease patients do not show impaired use of priors in conditions of perceptual uncertainty. Neuropsychologia 2024; 202:108965. [PMID: 39097186 DOI: 10.1016/j.neuropsychologia.2024.108965] [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: 11/16/2023] [Revised: 07/26/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024]
Abstract
The ability to use past learned experiences to guide decisions is an important component of adaptive behavior, especially when decision-making is performed under time pressure or when perceptual information is unreliable. Previous studies using visual discrimination tasks have shown that this prior-informed decision-making ability is impaired in Parkinson's disease (PD), but the mechanisms underlying this deficit and the precise impact of dopaminergic denervation within cortico-basal circuits remain unclear. To shed light on this problem, we evaluated prior-informed decision-making under various conditions of perceptual uncertainty in a sample of 13 clinically established early PD patients, and compared behavioral performance with healthy control (HC) subjects matched in age, sex and education. PD patients and HC subjects performed a random dot motion task in which they had to decide the net direction (leftward vs. rightward) of a field of moving dots and communicate their choices through manual button presses. We manipulated prior knowledge by modulating the probability of occurrence of leftward vs. rightward motion stimuli between blocks of trials, and by explicitly giving these probabilities to subjects at the beginning of each block. We further manipulated stimulus discriminability by varying the proportion of dots moving coherently in the signal direction and speed-accuracy instructions. PD patients used choice probabilities to guide perceptual decisions in both speed and accuracy conditions, and their performance did not significantly differ from that of HC subjects. An additional analysis of the data with the diffusion decision model confirmed this conclusion. These results suggest that the impaired use of priors during visual discrimination observed at more advanced stages of PD is independent of dopaminergic denervation, though additional studies with larger sample sizes are needed to more firmly establish this conclusion.
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Affiliation(s)
- Matthieu Béreau
- Université de Franche-Comté, UMR INSERM 1322 LINC, 25000 Besançon, France; Département de neurologie, réseau NS-PARK/F-CRIN, CHU de Besançon, 25000 Besançon, France
| | | | - Mathieu Servant
- Université de Franche-Comté, UMR INSERM 1322 LINC, 25000 Besançon, France; Institut Universitaire de France, France.
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2
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Sayalı C, van den Bosch R, Määttä JI, Hofmans L, Papadopetraki D, Booij J, Verkes RJ, Baas M, Cools R. Methylphenidate undermines or enhances divergent creativity depending on baseline dopamine synthesis capacity. Neuropsychopharmacology 2023; 48:1849-1858. [PMID: 37270619 PMCID: PMC10584959 DOI: 10.1038/s41386-023-01615-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/10/2023] [Accepted: 05/17/2023] [Indexed: 06/05/2023]
Abstract
Catecholamine-enhancing psychostimulants, such as methylphenidate have long been argued to undermine creative thinking. However, prior evidence for this is weak or contradictory, stemming from studies with small sample sizes that do not consider the well-established large variability in psychostimulant effects across different individuals and task demands. We aimed to definitively establish the link between psychostimulants and creative thinking by measuring effects of methylphenidate in 90 healthy participants on distinct creative tasks that measure convergent and divergent thinking, as a function of individuals' baseline dopamine synthesis capacity, indexed with 18F-FDOPA PET imaging. In a double-blind, within-subject design, participants were administered methylphenidate, placebo or selective D2 receptor antagonist sulpiride. The results showed that striatal dopamine synthesis capacity and/or methylphenidate administration did not affect divergent and convergent thinking. However, exploratory analysis demonstrated a baseline dopamine-dependent effect of methylphenidate on a measure of response divergence, a creativity measure that measures response variability. Response divergence was reduced by methylphenidate in participants with low dopamine synthesis capacity but enhanced in those with high dopamine synthesis capacity. No evidence of any effect of sulpiride was found. These results show that methylphenidate can undermine certain forms of divergent creativity but only in individuals with low baseline dopamine levels.
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Affiliation(s)
- Ceyda Sayalı
- The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Ruben van den Bosch
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Jessica I Määttä
- Department of Psychology, Stockholm University, Stockholm, Sweden
| | - Lieke Hofmans
- Department of Developmental Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Danae Papadopetraki
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
- Department of Psychiatry, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Jan Booij
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Academic Medical Center, Amsterdam, The Netherlands
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Robbert-Jan Verkes
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
- Department of Psychiatry, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Matthijs Baas
- Department of Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Roshan Cools
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
- Department of Psychiatry, Radboud University Medical Centre, Nijmegen, The Netherlands
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3
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Kassim FM. Systematic reviews of the acute effects of amphetamine on working memory and other cognitive performances in healthy individuals, with a focus on the potential influence of personality traits. Hum Psychopharmacol 2023; 38:e2856. [PMID: 36251504 PMCID: PMC10078276 DOI: 10.1002/hup.2856] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVES This research aimed to systematically review the acute effects of amphetamine (AMP), a dopamine-releasing agent, on working memory (WM) and other cognitive performances. The investigation also aimed to review the impact of personality traits on the subjective and objective effects of AMP and possible links between personality traits and effects of AMP. METHODS Previous double-blind controlled studies assessing the main effects of AMP on WM and other cognitive performances in healthy volunteers were systematically reviewed. An electronic search was performed in the PUBMED and SCOPUS databases. Narrative reviews of the influence of personality traits on the subjective and objective effects of AMP were included. RESULTS Nineteen WM studies were included in the current review. Seven studies found effects of AMP on spatial WM, but only one study found the effect of AMP on verbal WM. Thirty-seven independent studies on other aspects of cognitive performance were identified. Twenty-two reported effects of AMP on cognitive functions. Studies also showed that personality traits are associated with the subjective effects of AMP. However, few studies reported the impacts of personality traits on the objective (such as WM) effects of AMP. CONCLUSION Overall, findings indicate that AMP has mixed-effects on spatial WM and other cognitive functions, but it lacks effects on verbal WM. Although there are insufficient studies on objective measures, studies also indicated that the subjective effects of AMP administration are linked to between-person variations in personality traits.
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Affiliation(s)
- Faiz M Kassim
- Pharmacology, School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia.,Department of Psychiatry, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
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4
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Meira B, Lhommée E, Schmitt E, Klinger H, Bichon A, Pélissier P, Anheim M, Tranchant C, Fraix V, Meoni S, Durif F, Houeto JL, Azulay JP, Moro E, Thobois S, Krack P, Castrioto A. Early Parkinson's Disease Phenotypes Tailored by Personality, Behavior, and Motor Symptoms. JOURNAL OF PARKINSON'S DISEASE 2022; 12:1665-1676. [PMID: 35527563 DOI: 10.3233/jpd-213070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Previous studies described a parkinsonian personality characterized as rigid, introverted, and cautious; however, little is known about personality traits in de novo Parkinson's disease (PD) patients and their relationships with motor and neuropsychiatric symptoms. OBJECTIVE To investigate personality in de novo PD and explore its relationship with PD symptoms. METHODS Using Cloninger's biosocial model, we assessed personality in 193 de novo PD patients. Motor and non-motor symptoms were measured using several validated scales. Cluster analysis was conducted to investigate the interrelationship of personality traits, motor, and non-motor symptoms. RESULTS PD patients showed low novelty seeking, high harm avoidance, and normal reward dependence and persistence scores. Harm avoidance was positively correlated with the severity of depression, anxiety, and apathy (rs = [0.435, 0.676], p < 0.001) and negatively correlated with quality of life (rs = -0.492, p < 0.001). Novelty seeking, reward dependence, and persistence were negatively correlated with apathy (rs = [-0.274, -0.375], p < 0.001). Classification of patients according to personality and PD symptoms revealed 3 distinct clusters: i) neuropsychiatric phenotype (with high harm avoidance and low novelty seeking, hypodopaminergic neuropsychiatric symptoms and higher impulsivity), ii) motor phenotype (with low novelty seeking and higher motor severity), iii) benign phenotype (with low harm avoidance and high novelty seeking, reward dependence, and persistence traits clustered with lower symptoms severity and low impulsivity). CONCLUSION Personality in early PD patients allows us to recognize 3 patients' phenotypes. Identification of such subgroups may help to better understand their natural history. Their longitudinal follow-up will allow confirming whether some personality features might influence disease evolution and treatment.
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Affiliation(s)
- Bruna Meira
- Neurology Department, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal.,Movement Disorders Center, Neurology, CHU Grenoble Alpes, Grenoble, France
| | - Eugénie Lhommée
- Movement Disorders Center, Neurology, CHU Grenoble Alpes, Grenoble, France
| | - Emmanuelle Schmitt
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
| | - Hélène Klinger
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Centre Expert Parkinson, Lyon, France.,Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut des Sciences Cognitives Marc Jeannerod, Bron, France
| | - Amélie Bichon
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
| | - Pierre Pélissier
- Movement Disorders Center, Neurology, CHU Grenoble Alpes, Grenoble, France
| | - Mathieu Anheim
- Département de Neurologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, (IGBMC), INSERM-U964/CNRS-UMR7104/, Université de Strasbourg, Illkirch, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Christine Tranchant
- Département de Neurologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, (IGBMC), INSERM-U964/CNRS-UMR7104/, Université de Strasbourg, Illkirch, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Valérie Fraix
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
| | - Sara Meoni
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
| | - Franck Durif
- Université Clermont Auvergne, NPsy-Sydo, Clermont-Ferrand University Hospital, Neurology Department, Clermont-Ferrand, France
| | - Jean-Luc Houeto
- Service de Neurologie, Centre Expert Parkinson, CHU de Limoges, UMR1094 INSERM, Université de Limoges, Limoges, France
| | - Jean Philippe Azulay
- Neurology and Pathology Department of the Movement, University Hospital of Marseille, Timone Hospital, Marseille, France
| | - Elena Moro
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
| | - Stéphane Thobois
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Centre Expert Parkinson, Lyon, France.,Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut des Sciences Cognitives Marc Jeannerod, Bron, France
| | - Paul Krack
- Department of Neurology, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Anna Castrioto
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble, France
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Netter P. Between Temperament and Psychopathology: Examples from Neuropharmacological Challenge Tests in Healthy Humans. Neuropsychobiology 2021; 80:84-100. [PMID: 33647900 DOI: 10.1159/000514074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/21/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND This paper tries to demonstrate that the questionnaire-based continuum between temperament traits and psychopathology can also be shown on the biochemical level. A common feature is the incapacity to adapt to external demands, as demonstrated by examples of disturbed hormone cycles as well as neurotransmitter (TM) responses related to affective and impulse control disorders. METHODS Pharmacological challenge tests performed in placebo-controlled balanced crossover experiments with consecutive challenges by serotonin (5-HT), noradrenaline (NA), and dopamine (DA) agonistic drugs were applied to healthy subjects, and individual responsivities of each TM system assessed by respective cortisol and prolactin responses were related to questionnaire-based facets of depressiveness and impulsivity, respectively. RESULTS The depression-related traits "Fatigue" and "Physical Anhedonia" were characterized by low and late responses to DA stimulation as opposed to "Social Anhedonia," which rather mirrored the pattern of schizophrenia. Reward-related and premature responding-related impulsivity represented by high scores on "Disinhibition" and "Motor Impulsivity," respectively, as well as the questionnaire-based components of attention deficit hyperactivity disorder, "Cognitive" and "Motor Impulsivity," could be discriminated by their patterns of DA/NA responses. 5-HT responses suggested that instead of the expected low availability of 5-HT claimed to be associated with impulse control disorders, low NA responses indicated lack of inhibition in impulsivity and high NA responses in depression-related "Anhedonia" indicated suppression of approach motivation. CONCLUSIONS In spite of the flaws of pharmacological challenge tests, they may be suitable for demonstrating similarities in TM affinities between psychopathological disturbances and respective temperament traits and for separating sub-entities of larger disease spectra.
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Affiliation(s)
- Petra Netter
- Department of Psychology, University of Gießen, Gießen, Germany,
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6
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Sieurin J, Zhan Y, Pedersen NL, Wirdefeldt K. Neuroticism, Smoking, and the Risk of Parkinson's Disease. JOURNAL OF PARKINSONS DISEASE 2021; 11:1325-1334. [PMID: 34024779 PMCID: PMC8461727 DOI: 10.3233/jpd-202522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: The relationship among neuroticism, smoking, and Parkinson’s disease (PD) is less examined. Objective: To examine the causal associations between neuroticism, smoking initiation, and the risk of PD. Methods: We performed a two-sample Mendelian randomization (MR) design in a network framework. Summary statistics from meta-analyses of genome-wide association studies (GWAS) were based on large cohorts of European ancestry. Study participants were from various cohort studies for neuroticism and smoking initiation, and case-control studies or cohort studies of PD from previously published GWAS meta-analyses. Patients with PD were ascertained from either clinical visit or self-reported. Results: The two-sample MR analysis showed no evidence for a causal association between neuroticism and PD risk (odds ratio [OR] 0.86, 95%confidence intervals [CIs] 0.67 to 1.12). While we did not find a significant association between neuroticism and PD, one SNP, rs58879558 (located in MAPT region), was associated with both neuroticism and PD. We found a significant association of neuroticism on smoking initiation (OR: 1.10, 95%CI: 1.05 to 1.14). Further, our results provided evidence for a protective effect of smoking initiation on the risk of PD (OR: 0.75, 95%CI: 0.62 to 0.91). Conclusion: These findings do not support a causal association of neuroticism on PD risk. However, they provide evidence for a causal relationship between neuroticism and smoking initiation and a strong causal effect of smoking initiation on a reduced risk of PD.
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Affiliation(s)
- Johanna Sieurin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Yiqiang Zhan
- School of Public Health, Sun Yat-sen University, Shenzhen, China.,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,German Center for Neurodegenerative Diseases, Ulm Germany
| | - Nancy L Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Karin Wirdefeldt
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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7
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Pham U, Skogseid IM, Pripp AH, Bøen E, Toft M. Impulsivity in Parkinson's disease patients treated with subthalamic nucleus deep brain stimulation-An exploratory study. PLoS One 2021; 16:e0248568. [PMID: 33711081 PMCID: PMC7954288 DOI: 10.1371/journal.pone.0248568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 02/27/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Deep brain stimulation of the subthalamic nucleus (STN-DBS) is a recognized treatment in Parkinson's disease (PD). Knowledge is still limited regarding the possible impact of STN-DBS on personality traits and the personality characteristics of PD patients who undergo surgery. METHODS To assess personality traits in relation to STN-DBS we did an ancillary protocol as part of a prospective randomized study that compared two surgical strategies. Patients were assessed with the Temperament and Character Inventory (TCI), the Urgency, Premeditation, Perseverance and Sensation Seeking impulse behavior scale, the Eysenck Personality Questionnaire (EPQ) and the Toronto Alexithymia Scale preoperatively and after one year of STN-DBS. EPQ and TCI baseline scores were compared with mean scores of healthy reference populations. RESULTS After 12-months of STN-DBS, there was a significant decline in Persistence compared to baseline. Preoperatively, the STN-DBS patients had significantly lower Persistence and Self-Transcendence scores, and significantly higher scores on Novelty-Seeking, Self-Directedness, Cooperativeness and on Social Conformity than referenced populations. No difference was found in Neuroticism or Harm-Avoidance scores. The baseline prevalence of alexithymia was low and at 1-year follow-up there was no significant change in alexithymia scores. CONCLUSIONS We found a higher baseline level of impulsivity in PD patients who underwent STN-DBS. After one year of STN-DBS, our results indicated that the treatment may affect the patients' personality by increasing certain aspects of impulsivity. There was no effect on alexithymia. The preoperative personality profile of PD patients might influence the outcome of STN-DBS.
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Affiliation(s)
- U. Pham
- Division of Mental Health and Addiction, Psychosomatic and CL Psychiatry, Oslo University Hospital, Oslo, Norway
| | - I. M. Skogseid
- Department of Neurology, Oslo University Hospital, Oslo, Norway
| | - A. H. Pripp
- Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
- Department of Biostatistics, Epidemiology and Health Economics, Oslo University Hospital, Oslo, Norway
| | - E. Bøen
- Division of Mental Health and Addiction, Psychosomatic and CL Psychiatry, Oslo University Hospital, Oslo, Norway
| | - M. Toft
- Department of Neurology, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
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8
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Ponsi G, Scattolin M, Villa R, Aglioti SM. Human moral decision-making through the lens of Parkinson's disease. NPJ Parkinsons Dis 2021; 7:18. [PMID: 33654110 PMCID: PMC7925586 DOI: 10.1038/s41531-021-00167-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/25/2021] [Indexed: 01/31/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the loss of dopaminergic neurons in the basal ganglia (BG) and thalamocortical circuitry. While defective motor control has long been considered the defining symptom of PD, mounting evidence indicates that the BG are fundamentally important for a multitude of cognitive, emotional, and motivational processes in addition to motor function. Here, we review alterations in moral decision-making in people with PD, specifically in the context of deceptive behavior. We report that PD patients exhibit two opposite behavioral patterns: hyper- and hypo-honesty. The hyper-honest subgroup engages in deception less often than matched controls, even when lying is associated with a monetary payoff. This behavioral pattern seems to be linked to dopaminergic hypo-activity, implying enhanced harm avoidance, risk aversion, non-impulsivity, and reduced reward sensitivity. On the contrary, the hypo-honest subgroup-often characterized by the additional diagnosis of impulse control disorders (ICDs) and dopamine dysregulation syndrome (DDS)-deceives more often than both PD patients without ICDs/DDS and controls. This behavioral pattern appears to be associated with dopaminergic hyperactivity, which underpins enhanced novelty-seeking, risk-proneness, impulsivity, and reward sensitivity. We posit that these two complementary behavioral patterns might be related to dysfunction of the dopaminergic reward system, leading to reduced or enhanced motivation to deceive. Only a few studies have directly investigated moral decision-making in PD and other neurodegenerative disorders affecting the BG, and further research on the causal role of subcortical structures in shaping moral behavior is needed.
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Affiliation(s)
- Giorgia Ponsi
- Department of Psychology Sapienza University of Rome and CLNS@SAPIENZA Roma, Istituto Italiano di Tecnologia, Genova, Italy.
- IRCCS Fondazione Santa Lucia, Roma, Italy.
| | - Marina Scattolin
- Department of Psychology Sapienza University of Rome and CLNS@SAPIENZA Roma, Istituto Italiano di Tecnologia, Genova, Italy
- IRCCS Fondazione Santa Lucia, Roma, Italy
| | - Riccardo Villa
- Department of Psychology Sapienza University of Rome and CLNS@SAPIENZA Roma, Istituto Italiano di Tecnologia, Genova, Italy
- IRCCS Fondazione Santa Lucia, Roma, Italy
| | - Salvatore Maria Aglioti
- Department of Psychology Sapienza University of Rome and CLNS@SAPIENZA Roma, Istituto Italiano di Tecnologia, Genova, Italy.
- IRCCS Fondazione Santa Lucia, Roma, Italy.
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9
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Does the Personality of Patients with Parkinson's Disease Affect the Decision to Perform Deep Brain Stimulation Surgery? A Cross-Sectional Study in a Chinese Cohort. Behav Neurol 2021; 2021:6639255. [PMID: 33574965 PMCID: PMC7857895 DOI: 10.1155/2021/6639255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/14/2020] [Accepted: 12/30/2020] [Indexed: 11/25/2022] Open
Abstract
We investigated whether the personality of patients with Parkinson's disease (PD) before subthalamic brain stimulation differed from patients receiving drug treatments and whether the personality of patients affected surgical decisions. We recruited 38 patients with advanced PD scheduled for deep brain stimulation (DBS), 40 patients with PD receiving the very best medical treatment, and 51 healthy control subjects. All participants were evaluated by the Minnesota multiphasic personality inventory-1 (MMPI-1). PD patients who were candidates for DBS did not exhibit any significant differences in personality when compared with PD patients who were treated with drugs. Compared with healthy controls, patients with PD had remarkably higher MMPI-1 scores for spiritual quality, neuroticism, and introversion, but significantly lower scores for socialization. In addition, patients with PD were more submissive, more dependent on others, and less active in social activities. Our data indicated that the main deciding factor relating to whether to undergo DBS was the disease itself and not the pathological personality. However, neurotic and psychotic symptoms accompanying PD may influence the effect of DBS. We found that greater benefit is obtained by surgical or medical interventions if abnormal neurotic characteristics are considered early in the course of PD.
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10
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Boussac M, Arbus C, Dupouy J, Harroch E, Rousseau V, Croiset A, Ory-Magne F, Rascol O, Moreau C, Rolland AS, Maltête D, Rouaud T, Meyer M, Drapier S, Giordana B, Anheim M, Hainque E, Jarraya B, Benatru I, Auzou N, Belamri L, Tir M, Marques AR, Thobois S, Eusebio A, Corvol JC, Devos D, Brefel-Courbon C. Personality dimensions of patients can change during the course of parkinson's disease. PLoS One 2021; 16:e0245142. [PMID: 33411732 PMCID: PMC7790271 DOI: 10.1371/journal.pone.0245142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Studies assessing personality dimensions by the "Temperament and Character Inventory" (TCI) have previously found an association between Parkinson's disease (PD) and lower Novelty Seeking and higher Harm Avoidance scores. Here, we aimed to describe personality dimensions of PD patients with motor fluctuations and compare them to a normative population and other PD populations. METHODS All PD patients awaiting Deep Brain Stimulation (DBS) answered the TCI before neurosurgery. Their results were compared to those of historical cohorts (a French normative population, a de novo PD population, and a PD population with motor fluctuations). RESULTS Most personality dimensions of our 333 included PD patients with motor fluctuations who are candidates for DBS were different from those of the normative population and some were also different from those of the De Novo PD population, whereas they were similar to those of another population of PD patients with motor fluctuations. CONCLUSIONS During the course of PD, personality dimensions can change in parallel with the development of motor fluctuations, either due to the evolution of the disease and/or dopaminergic treatments.
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Affiliation(s)
- Mathilde Boussac
- Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, Toulouse, France
| | - Christophe Arbus
- Psychiatry Department of the University Hospital of Toulouse, CHU Purpan, Toulouse, France
| | - Julia Dupouy
- Department of Neurology, Hospital of Avignon, Avignon, France
| | - Estelle Harroch
- Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Center, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Center, NS-PARK/FCRIN Network, Toulouse, France
| | - Vanessa Rousseau
- Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Center, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Center, NS-PARK/FCRIN Network, Toulouse, France
| | - Aurélie Croiset
- CERPPS—Study and Research Center in Psychopathology and Health Psychology, University of Toulouse II Jean-Jaurès, Toulouse, France
| | - Fabienne Ory-Magne
- Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, Toulouse, France
- Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Center, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Center, NS-PARK/FCRIN Network, Toulouse, France
| | - Olivier Rascol
- Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, Toulouse, France
- Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Center, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Center, NS-PARK/FCRIN Network, Toulouse, France
| | - Caroline Moreau
- Department of Medical Pharmacology, Neurology and Movement Disorders Department, Referent Center of Parkinson’s disease, CHU of Lille, Univ. Lille Neuroscience & Cognition, Inserm, UMR-S1172, Licend, NS-PARK/FCRIN Network, Lille, France
| | - Anne-Sophie Rolland
- Department of Medical Pharmacology, Neurology and Movement Disorders Department, Referent Center of Parkinson’s disease, CHU of Lille, Univ. Lille Neuroscience & Cognition, Inserm, UMR-S1172, Licend, NS-PARK/FCRIN Network, Lille, France
| | - David Maltête
- Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, INSERM U1239, NS-PARK/FCRIN Network, Mont-Saint-Aignan, France
| | - Tiphaine Rouaud
- Clinique Neurologique, Hôpital Guillaume et René Laennec, NS-PARK/FCRIN Network, Boulevard Jacques Monod, Nantes, France
| | - Mylène Meyer
- Neurology Department, Nancy University Hospital, Nancy, France
| | - Sophie Drapier
- Behavior and Basal Ganglia Research Unit (EA 4712), University of Rennes 1, Rennes, France
- Department of Neurology, Rennes University Hospital, NS-PARK/FCRIN Network, Rennes, France
| | - Bruno Giordana
- Service Universitaire de Psychiatrie, Hôpital Pasteur 1, CHU de Nice, Nice, France
| | - Mathieu Anheim
- Service de Neurologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, NS-PARK/FCRIN Network, Strasbourg, France
| | - Elodie Hainque
- Département de Neurologie, Hôpital Pitié-Salpêtrière, AP-HP, Faculté de Médecine de Sorbonne Université, UMR S 1127, Inserm U 1127, and CNRS UMR 7225, and Institut du Cerveau et de la Moëlle épinière, NS-PARK/FCRIN Network, Paris, France
| | - Béchir Jarraya
- Pôle Neurosciences, Foch Hospital, Suresnes, France
- Université de Versailles Paris-Saclay, INSERM U992, CEA Neurospin, France
| | - Isabelle Benatru
- Service de Neurologie, Centre Expert Parkinson, CIC-INSERM 1402, CHU Poitiers, NS-PARK/FCRIN Network, Poitiers, France
| | - Nicolas Auzou
- CHU de Bordeaux, Centre Expert Parkinson, Institut des maladies neuro-dégénératives, Bordeaux, France
| | - Lhaouas Belamri
- Hôpital Fondation A de Rothschild, Service de recherche clinique, Paris, France
| | - Mélissa Tir
- Department of Neurology, Department of Neurosurgery, Expert Centre for Parkinson's disease, Amiens University Hospital, EA 4559 Laboratoire de Neurosciences Fonctionnelles et Pathologie (LNFP) Université de Picardie Jules Verne, University of Picardy Jules Verne (UPJV), NS-PARK/FCRIN Network, Amiens, France
| | - Ana-Raquel Marques
- Neurology Department, Université Clermont Auvergne, EA7280, Clermont-Ferrand University Hospital, NS-PARK/FCRIN Network, Clermont-Ferrand, France
| | - Stephane Thobois
- Univ Lyon, Université Claude Bernard Lyon 1, Faculté de Médecine Lyon Sud Charles Mérieux, Lyon, France
- CNRS, Institut des Sciences Cognitives, UMR 5229, Bron, France
- Centre Expert Parkinson, Hôpital Neurologique "Pierre Wertheimer", Hospices Civils de Lyon, NS-PARK/FCRIN Network, Lyon, France
| | - Alexandre Eusebio
- Aix Marseille Université, AP-HM, Hôpital de La Timone, Service de Neurologie et Pathologie du Mouvement, and UMR CNRS 7289, Institut de Neuroscience de La Timone, NS-PARK/FCRIN Network, Marseille, France
| | - Jean Christophe Corvol
- Département de Neurologie, Hôpital Pitié-Salpêtrière, AP-HP, Faculté de Médecine de Sorbonne Université, UMR S 1127, Inserm U 1127, and CNRS UMR 7225, and Institut du Cerveau et de la Moëlle épinière, NS-PARK/FCRIN Network, Paris, France
| | - David Devos
- Department of Medical Pharmacology, Neurology and Movement Disorders Department, Referent Center of Parkinson’s disease, CHU of Lille, Univ. Lille Neuroscience & Cognition, Inserm, UMR-S1172, Licend, NS-PARK/FCRIN Network, Lille, France
| | - Christine Brefel-Courbon
- Toulouse NeuroImaging Center, University of Toulouse, Inserm, UPS, Toulouse, France
- Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Center, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Center, NS-PARK/FCRIN Network, Toulouse, France
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11
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Sheynin J, Baetu I, Collins-Praino LE, Myers CE, Winwood-Smith R, Moustafa AA. Maladaptive avoidance patterns in Parkinson's disease are exacerbated by symptoms of depression. Behav Brain Res 2020; 382:112473. [PMID: 31935419 DOI: 10.1016/j.bbr.2020.112473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/05/2020] [Accepted: 01/05/2020] [Indexed: 11/26/2022]
Abstract
Parkinson's disease (PD) is a chronic, progressive neurodegenerative disorder, characterized by a loss of dopaminergic neurons in the substantia nigra pars compacta. Given that dopamine is critically involved in learning and other cognitive processes, such as working memory, dopamine loss in PD has been linked both to learning abnormalities and to cognitive dysfunction more generally in the disease. It is unclear, however, whether avoidance behavior is impacted in PD. This is significant, as this type of instrumental behavior plays an important role in both decision-making and emotional (dys) function. Consequently, the aim of the present study was to examine avoidance learning and operant extinction in PD using a computer-based task. On this task, participants control a spaceship and attempt to shoot an enemy spaceship to gain points. They also learn to hide in safe areas to protect from (i.e., avoid) aversive events (on-screen explosions and point loss). The results showed that patients with PD (N = 25) acquired an avoidance response during aversive periods to the same extent as healthy age-matched controls (N = 19); however, patients demonstrated greater hiding during safe periods not associated with aversive events, which could represent maladaptive generalization of the avoidance response. Furthermore, this impairment was more pronounced during the extinction phase, and in patients who reported higher levels of depression. These results demonstrate for the first time that PD is associated with maladaptive avoidance patterns, which could possibly contribute to the emergence of depression in the disease.
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Affiliation(s)
- Jony Sheynin
- Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI, USA; Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA.
| | - Irina Baetu
- School of Psychology, University of Adelaide, Adelaide, SA, Australia
| | - Lyndsey E Collins-Praino
- Department of Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Catherine E Myers
- Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA; Department of Pharmacology, Physiology & Neuroscience, New Jersey Medical School, Rutgers University, Newark, NJ, USA
| | - Robyn Winwood-Smith
- School of Social Sciences and Psychology, Western Sydney University, Sydney, NSW, Australia
| | - Ahmed A Moustafa
- School of Social Sciences and Psychology, Western Sydney University, Sydney, NSW, Australia; The MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Sydney, NSW, Australia
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12
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Double obstacles increase gait asymmetry during obstacle crossing in people with Parkinson's disease and healthy older adults: A pilot study. Sci Rep 2020; 10:2272. [PMID: 32042027 PMCID: PMC7010667 DOI: 10.1038/s41598-020-59266-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 01/27/2020] [Indexed: 11/17/2022] Open
Abstract
Gait asymmetry during unobstructed walking in people with Parkinson’s disease (PD) has been well documented. However, under complex situations, such as environments with double obstacles, gait asymmetry remains poorly understood in PD. Therefore, the aim of this study was to analyze inter-limb asymmetry while crossing a single obstacle and double obstacles (with different distances between them) in people with PD and healthy older adults. Nineteen people with PD and 19 healthy older people performed three conditions: (i) walking with one obstacle (Single); (ii) walking with two obstacles with a 50 cm distance between them (Double-50); (iii) walking with two obstacles with a 108 cm distance between them (Double-108). The participants performed the obstacle crossing with both lower limbs. Asymmetry Index was calculated. We found that people with PD presented higher leading and trailing toe clearance asymmetry than healthy older people. In addition, participants increased asymmetry in the Double-50 compared to Single condition. It can be concluded that people with PD show higher asymmetry during obstacle crossing compared to healthy older people, independently of the number of obstacles. In addition, a challenging environment induces asymmetry during obstacle crossing in both people with PD and healthy older people.
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13
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LaGrone S, Joseph C, Johansson H, Enberg B, Franzén E. Choreographing life-experiences of balance control in people with Parkinson's disease. BMC Neurol 2020; 20:50. [PMID: 32039713 PMCID: PMC7008524 DOI: 10.1186/s12883-020-01632-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 01/31/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is a devastating neurodegenerative disorder. Reduced balance is one of the cardinal symptoms of PD, predisposing people living with PD to experience difficulties with the execution of tasks and activities, as well as hindering their involvement in meaningful life areas. The overarching aim of this study was to explore how deficits in balance control manifest in everyday life and how it is managed by people with PD (PwPD). METHODS Qualitative description was used as methodology, and in-depth interviews were conducted with 18 participants, between the ages of 46 to 83 years, with mild to severe PD. Interview transcripts were analyzed using qualitative content analysis, following an inductive approach. RESULTS One theme emerged from the analysis: Increased planning-choreographing life. Within this overarching theme, two categories were identified, namely Limitations in mobility and New restricted functioning in everyday life, each with 3-4 sub-categories. The categories described how PwPD handled decreased balance control in their everyday life by using motor and cognitive strategies as a consequence of not trusting their body's capacity to control balance. Activities in everyday life, as well as the ability to partake in leisure and social activities were profoundly affected. CONCLUSION People with mild to severe PD used strategies to handle decreased balance and they choreographed their lives around their individual current state of mobility and balance. The knowledge gained from this study can be used to develop targeted interventions addressing the nuances of balance deficits in everyday life.
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Affiliation(s)
- Sofie LaGrone
- Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
| | - Conran Joseph
- Department of Health and Rehabilitation Sciences, Division of Physiotherapy, Stellenbosch University, Cape Town, South Africa
| | - Hanna Johansson
- Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy, Karolinska Institutet, Stockholm, Sweden
| | - Birgit Enberg
- Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
| | - Erika Franzén
- Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy, Karolinska Institutet, Stockholm, Sweden
- Karolinska Institutet and Function Area Occupational Therapy and Physiotherapy, Function of Allied Health Professionals, Karolinska University Hospital, Stockholm, Sweden
- Stockholms Sjukhem R&D unit, Stockholm, Sweden
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14
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Bell JF, Wu Y, Sollinger AB, Muthukattil RJ, Ferrara JM. Comparing No-Show Rates of Neurology Outpatients with and without Parkinson's Disease: A Real-World Assessment of the Parkinsonian Personality Profile. JOURNAL OF PARKINSONS DISEASE 2019; 10:347-350. [PMID: 31594248 DOI: 10.3233/jpd-191651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Parkinson's disease (PD) has been hypothesized to be associated with certain personality traits, including conscientiousness and punctuality. However, research aimed at quantifying these traits is largely derived from questionnaire-based personality inventories rather than real-world observations. OBJECTIVE To explore the presence of a parkinsonian personality profile by assessing the no-show rate of patients with PD versus other neurological disorders. METHODS We extracted data from our electronic health record for all neurology appointments over a 78-month interval. Additionally, we obtained primary care appointment data for the same patients over the same timeframe. For each appointment we collected appointment date/time, check-in time, provider, age, sex, insurance type, days between appointment date and scheduling, diagnosis code, and no-show status. RESULTS 19,433 unique patients (400 with PD) accounting for a total of 252,347 outpatient appointments were included in our analysis. The overall no-show rate for PD patients was 3% versus 7.4% for patients with other neurologic disorders (OND). No show rates for PD patients were lower than those with OND for both neurology appointments (2.7% versus 13.6%) and for primary care visits (3.1% versus 5.9%). CONCLUSIONS Patients with PD have lower no-show rates than patients with OND. Additionally, the no-show rate for patients with PD did not differ between their neurology and primary care appointments, confirming that patient's personality rather than provider traits account for this difference, and supporting the presence of a parkinsonian personality.
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Affiliation(s)
- Jeremiah Fuller Bell
- Department of Neurology, Virginia Tech Carilion School of Medicine, Roanoka, VA, USA
| | - Yingxing Wu
- Health Analytics Research, Carilion Clinic, Roanoka, VA, USA
| | - Ann B Sollinger
- Clinical Neuropsychology, Virginia Tech Carilion School of Medicine, Roanoka, VA, USA
| | | | - Joseph M Ferrara
- Department of Neurology, Virginia Tech Carilion School of Medicine, Roanoka, VA, USA
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15
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Wassouf Z, Schulze-Hentrich JM. Alpha-synuclein at the nexus of genes and environment: the impact of environmental enrichment and stress on brain health and disease. J Neurochem 2019; 150:591-604. [PMID: 31165472 PMCID: PMC6771760 DOI: 10.1111/jnc.14787] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 12/16/2022]
Abstract
Accumulation of alpha‐synuclein protein aggregates is the hallmark neuropathologic feature of synucleinopathies such as Parkinson’s disease. Rare point mutations and multiplications in SNCA, the gene encoding alpha‐synuclein, as well as other genetic alterations are linked to familial Parkinson’s disease cases with high penetrance and hence constitute major genetic risk factors for Parkinson’s disease. However, the preponderance of cases seems sporadic, most likely based on a complex interplay between genetic predispositions, aging processes and environmental influences. Deciphering the impact of these environmental factors and their interactions with the individual genetic background in humans is challenging and often requires large cohorts, complicated study designs, and longitudinal set‐ups. In contrast, rodent models offer an ideal system to study the influence of individual environmental aspects under controlled genetic background and standardized conditions. In this review, we highlight findings from studies examining effects of environmental enrichment mimicking stimulation of the brain by its physical and social surroundings as well as of environmental stressors on brain health in the context of Parkinson’s disease. We discuss possible internal molecular transducers of such environmental cues in Parkinson’s disease rodent models and emphasize their potential in developing novel avenues to much‐needed therapies for this still incurable disease. ![]()
This article is part of the Special Issue “Synuclein”
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Affiliation(s)
- Zinah Wassouf
- German Center for Neurodegenerative Diseases, Göttingen, Germany.,Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
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16
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Wassouf Z, Hentrich T, Casadei N, Jaumann M, Knipper M, Riess O, Schulze-Hentrich JM. Distinct Stress Response and Altered Striatal Transcriptome in Alpha-Synuclein Overexpressing Mice. Front Neurosci 2019; 12:1033. [PMID: 30686992 PMCID: PMC6336091 DOI: 10.3389/fnins.2018.01033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 12/20/2018] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder with motor symptoms and a plethora of non-motor and neuropsychiatric features that accompany the disease from prodromal to advanced stages. While several genetic defects have been identified in familial forms of PD, the predominance of cases are sporadic and result from a complex interplay of genetic and non-genetic factors. Clinical evidence, moreover, indicates a role of environmental stress in PD, supported by analogies between stress-induced pathological consequences and neuronal deterioration observed in PD. From this perspective, we set out to investigate the effects of chronic stress exposure in the context of PD by using a genetic mouse model that overexpresses human wildtype SNCA. Mimicking chronic stress was achieved by adapting a chronic unpredictable mild stress protocol (CUMS) comprising eight different stressors that were applied randomly over a period of eight weeks starting at an age of four months. A distinctive stress response with an impact on anxiety-related behavior was observed upon SNCA overexpression and CUMS exposure. SNCA-overexpressing mice showed prolonged elevation of cortisol metabolites during CUMS exposure, altered anxiety-related traits, and declined motor skills surfacing with advanced age. To relate our phenotypic observations to molecular events, we profiled the striatal and hippocampal transcriptome and used a 2 × 2 factorial design opposing genotype and environment to determine differentially expressed genes. Disturbed striatal gene expression and minor hippocampal gene expression changes were observed in SNCA-overexpressing mice at six months of age. Irrespective of the CUMS-exposure, genes attributed to the terms neuroinflammation, Parkinson's signaling, and plasticity of synapses were altered in the striatum of SNCA-overexpressing mice.
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Affiliation(s)
- Zinah Wassouf
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Thomas Hentrich
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Nicolas Casadei
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Mirko Jaumann
- Molecular Physiology of Hearing, Department of Otolaryngology, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Marlies Knipper
- Molecular Physiology of Hearing, Department of Otolaryngology, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
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17
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Dogan B, Akyol A, Memis CO, Sair A, Akyildiz U, Sevincok L. The relationship between temperament and depression in Parkinson's disease patients under dopaminergic treatment. Psychogeriatrics 2019; 19:73-79. [PMID: 30141277 DOI: 10.1111/psyg.12366] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 06/14/2018] [Accepted: 07/18/2018] [Indexed: 12/26/2022]
Abstract
AIM The risk factors for depressive symptoms in patients with Parkinson's disease (PD) under dopaminergic drug treatment are unclear. In this study, we examined whether some temperament traits are related to the presence of comorbid depression in PD patients, independent of the characteristics of illness and drug treatment. METHODS The participants in this study were 74 patients with idiopathic PD who were already treated with stable doses of levodopa or dopamine agonists. Depressive (n = 20) and non-depressive (n = 52) PD patients were assessed by means of the Unified Parkinson's Disease Rating Scale, Beck Depression Inventory, and Temperament Evaluation of Memphis, Pisa, Paris and San Diego Auto-questionnaire. The doses of levodopa and dopamine agonists were converted into levodopa equivalent daily dose. RESULTS The duration of treatment in the depressive group was significantly longer than in the non-depressive group (P = 0.03). The depressive patients had significantly higher scores on the Unified Parkinson's Disease Rating Scale than the non-depressive patients. Depressive (P < 0.0001), cyclothymic (P < 0.0001), anxious (P < 0.0001), and irritable (P = 0.02) temperament scores were significantly higher in depressive than in non-depressive patients. Hyperthymia scores were significantly higher in non-depressive patients than in depressive patients (P = 0.01). Logistic regression analysis revealed that depressive temperament traits (P = 0.03) significantly predicted the diagnosis of depression. In contrast, hyperthymic temperament seemed to be associated with the absence of depression (P = 0.006). CONCLUSION Our results indicated that the severity of PD and duration of dopaminergic treatment were not predictive of the development of depression in PD patients. Depressive temperament strongly predicted the development of depression in our sample. Hyperthymic temperament seemed to be associated with patients without depression. We suggest that depressive temperament traits seem to be related to depression, while hyperthymic temperament may have a protective role in the risk of depression in PD patients.
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Affiliation(s)
- Bilge Dogan
- Department of Psychiatry, Adnan Menderes University, Aydin, Turkey
| | - Ali Akyol
- Department of Neurology, Adnan Menderes University, Aydin, Turkey
| | - Cagdas O Memis
- Department of Psychiatry, Adnan Menderes University, Aydin, Turkey
| | - Ahmet Sair
- Department of Neurology, Adnan Menderes University, Aydin, Turkey
| | - Utku Akyildiz
- Department of Neurology, Adnan Menderes University, Aydin, Turkey
| | - Levent Sevincok
- Department of Psychiatry, Adnan Menderes University, Aydin, Turkey
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18
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Irmen F, Horn A, Meder D, Neumann WJ, Plettig P, Schneider GH, Siebner HR, Kühn AA. Sensorimotor subthalamic stimulation restores risk-reward trade-off in Parkinson's disease. Mov Disord 2018; 34:366-376. [PMID: 30485537 DOI: 10.1002/mds.27576] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/26/2018] [Accepted: 10/11/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND STN-DBS effectively treats motor symptoms of advanced PD. Nonmotor cognitive symptoms, such as impaired impulse control or decision making, may either improve or worsen with DBS. A potential mediating factor of DBS-induced modulation of cognition is the electrode position within the STN with regard to functional subareas of parallel motor, cognitive, and affective basal ganglia loops. However, to date, the volume of tissue activated and weighted stimulation of STN motor versus nonmotor territories are yet to be linked to differential DBS effects on cognition. OBJECTIVES We aim to investigate whether STN-DBS influences risk-reward trade-off decisions and analyze its dependency on electrode placement. METHODS Seventeen PD patients ON and OFF STN-DBS and 17 age-matched healthy controls conducted a sequential decision-making task with escalating risk and reward. We computed the effect of STN-DBS on risk-reward trade-off decisions, localized patients' bilateral electrodes, and analyzed the predictive value of volume of tissue activated in STN motor and nonmotor territories on behavioral change. RESULTS We found that STN-DBS not only improves PD motor symptoms, but also normalizes overly risk-averse decision behavior in PD. Intersubject variance in electrode location could explain this behavioral change. Specifically, if STN-DBS activated preferentially STN motor territory, patients' risk-reward trade-off decisions more resembled those of healthy controls. CONCLUSIONS Our findings support the notion of convergence of different functional circuits within the STN and imply a positive effect of well-placed STN-DBS on nonmotor cognitive functioning in PD. © 2018 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Friederike Irmen
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Biological Psychology and Cognitive Neuroscience, Freie Universität Berlin, Berlin, Germany
| | - Andreas Horn
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - David Meder
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Wolf-Julian Neumann
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,Department of Neurosurgery, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Philip Plettig
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Gerd-Helge Schneider
- Department of Neurosurgery, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Hartwig Roman Siebner
- Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.,Department of Neurology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark
| | - Andrea A Kühn
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Berlin, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen, Berlin, Germany
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19
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Crowley EK, Nolan YM, Sullivan AM. Exercise as a therapeutic intervention for motor and non-motor symptoms in Parkinson's disease: Evidence from rodent models. Prog Neurobiol 2018; 172:2-22. [PMID: 30481560 DOI: 10.1016/j.pneurobio.2018.11.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 10/25/2018] [Accepted: 11/23/2018] [Indexed: 12/11/2022]
Abstract
Parkinson's disease (PD) is characterised by degeneration of dopaminergic neurons of the nigrostriatal pathway, which leads to the cardinal motor symptoms of the disease - tremor, rigidity and postural instability. A number of non-motor symptoms are also associated with PD, including cognitive impairment, mood disturbances and dysfunction of gastrointestinal and autonomic systems. Current therapies provide symptomatic relief but do not halt the disease process, so there is an urgent need for preventative strategies. Lifestyle interventions such as aerobic exercise have shown potential to lower the risk of developing PD and to alleviate both motor and non-motor symptoms. However, there is a lack of large-scale randomised clinical trials that have employed exercise in PD patients. This review will focus on the evidence from studies on rodent models of PD, for employing exercise as an intervention for both motor and non-motor symptoms.
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Affiliation(s)
- E K Crowley
- Department of Anatomy and Neuroscience, University College Cork, Ireland
| | - Y M Nolan
- Department of Anatomy and Neuroscience, University College Cork, Ireland; APC Microbiome Institute, University College Cork, Ireland
| | - A M Sullivan
- Department of Anatomy and Neuroscience, University College Cork, Ireland; APC Microbiome Institute, University College Cork, Ireland.
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20
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Mental health and BIS/BAS dimensions in Parkinson's disease and multiple sclerosis patients and in stroke survivors. PERSONALITY AND INDIVIDUAL DIFFERENCES 2018. [DOI: 10.1016/j.paid.2018.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Sieurin J, Andel R, Tillander A, Valdes EG, Pedersen NL, Wirdefeldt K. Occupational stress and risk for Parkinson's disease: A nationwide cohort study. Mov Disord 2018; 33:1456-1464. [PMID: 30145813 PMCID: PMC6220861 DOI: 10.1002/mds.27439] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 04/04/2018] [Accepted: 04/27/2018] [Indexed: 12/03/2022] Open
Abstract
Background: Stress has been suggested as a contributing factor in the etiology of Parkinson's Disease (PD), but epidemiological evidence is sparse. Objective: The objective of this study was to explore the association between occupational stress according to the job demands‐control model and the risk for PD. Methods: We conducted a population‐based cohort study with 2,544,748 Swedes born 1920 to 1950 who had an occupation reported in the population and housing censuses in 1980 or, if missing, in 1970. Job demands and control were measured using a job‐exposure matrix. Incident PD cases were identified using Swedish national health registers from 1987 to 2010. Data were analyzed with Cox regression with age as the underlying time scale, adjusting for sex, education, and chronic obstructive pulmonary disease as a proxy for smoking. Results: During a mean follow‐up time of 21.3 years, 21,544 incident PD cases were identified. High demands were associated with increased PD risk among men, most evident in men with high education. High control was associated with increased PD risk among the low educated. This association was more pronounced in women. High‐strain jobs (high demands and low control) was only associated with increased PDrisk among men with high education, whereas active jobs (high demands and high control) were associated with increased PD risk among men with low education. Interpretation: High job demands appear to increase PD risk in men, especially in men with high education, whereas high job control increases PD risk among low educated, more strongly in women. © 2018 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Johanna Sieurin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Ross Andel
- School of Aging Studies, University of South Florida, Tampa, Florida, USA.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Annika Tillander
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Elise G Valdes
- School of Aging Studies, University of South Florida, Tampa, Florida, USA.,Relias Learning, Cary, North Carolina, USA
| | - Nancy L Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Psychology, University of Southern California, Los Angeles, California, USA
| | - Karin Wirdefeldt
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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22
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Cerasa A. Re-examining the Parkinsonian Personality hypothesis: A systematic review. PERSONALITY AND INDIVIDUAL DIFFERENCES 2018. [DOI: 10.1016/j.paid.2018.03.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Santangelo G, Garramone F, Baiano C, D'Iorio A, Piscopo F, Raimo S, Vitale C. Personality and Parkinson's disease: A meta-analysis. Parkinsonism Relat Disord 2018; 49:67-74. [PMID: 29358028 DOI: 10.1016/j.parkreldis.2018.01.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/03/2018] [Accepted: 01/11/2018] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Personality changes are considered pre-motor features of Parkinson's disease (PD). Cross-sectional studies revealed that PD patients were more introvert, apprehensive, and cautious than healthy subjects (HS), whereas other studies failed to disclose these behavioural traits. Some studies found mixed results concerning Novelty Seeking (NS) and Harm Avoidance (HA) profiles in PD patients. To better clarify the personality profile in PD we performed a meta-analysis on studies exploring such topic according to both Cloninger's Psychobiological Model (PM) and Big Five Model (BFM) METHODS: The meta-analysis included 17 studies evaluating the personality in PD patients compared with HS. The outcomes were the dimensions of the temperament and character of the PM and personality traits of BFM. Effect sizes from data reported in the primary studies were computed using Hedges'g unbiased approach. Heterogeneity among the studies and publication bias were assessed. Meta-regressions were conducted with age at evaluation, gender, schooling, and type of personality trait tools as moderators. RESULTS As for PM, PD patients scored higher on HA and lower on NS than HS. No difference was found on Reward Dependence, Perseverance/Persistence and on character level. As for BFM, higher levels of Neuroticism, but lower levels of Openness and Extraversion were associated with PD. DISCUSSION The personality profile in PD is characterized by high Neuroticism and HA, and by low Openness, Extraversion and NS. The personality profile delineated in the present study on PD patients seems to reflect the premorbid one and might contribute to development and persistence of affective disorders.
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Affiliation(s)
- Gabriella Santangelo
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy.
| | - Federica Garramone
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Chiara Baiano
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Alfonsina D'Iorio
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Fausta Piscopo
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Simona Raimo
- Department of Psychology, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Carmine Vitale
- Department of Motor Sciences and Wellness, University "Parthenope", Naples, Italy; Institute of Diagnosis and Health, IDC-Hermitage Capodimonte, Naples, Italy
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24
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Lhommée E, Boyer F, Wack M, Pélissier P, Klinger H, Schmitt E, Bichon A, Fraix V, Chabardès S, Mertens P, Castrioto A, Kistner A, Broussolle E, Thobois S, Krack P. Personality, dopamine, and Parkinson's disease: Insights from subthalamic stimulation. Mov Disord 2017. [PMID: 28643887 DOI: 10.1002/mds.27065] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Subthalamic stimulation improves the motor and neuropsychiatric symptoms of Parkinson's disease. However, the impact of this treatment on impulse control and personality is the subject of heavy debate. The objective of this study was to investigate personality changes after subthalamic stimulation. METHODS Using Cloninger's biosocial model, we assessed personality in 73 Parkinson's disease patients before and 12 months after subthalamic stimulation accompanied by a drastic reduction in dopaminergic medication. Changes in psychobehavioral symptoms were measured using a battery of validated clinical scales (apathy, depression, anxiety, hyperemotionality, mania, psychosis, punding, and impulse control behaviors). RESULTS One year after surgery, the harm avoidance personality domain total score increased compared with the baseline (+2.8; 34 patients; P < 0.001), as did 3 of its 4 subdomains: anticipatory worry (+0.7; 10 patients; P = 0.005), shyness (+0.6; 7 patients; P = 0.03), and fatigability (+1.1; 10 patients; P = 0.0014). Evolution of the shyness personality trait correlated with the decrease in dopaminergic medication. Total scores in the other personality domains remained unchanged, except for extravagance, a subdomain of novelty seeking, and persistence, a subdomain of reward dependence, which both decreased following surgery (-0.3; 7 patients; and -0.6; 9 patients; P = 0.03 and P = 0.0019, respectively). Although apathy increased, other psychobehavioral symptoms, including impulse control behaviors and neuropsychiatric nonmotor fluctuations, improved. Depression and anhedonia remained stable. Scores in hypodopaminergia and neuropsychiatric nonmotor OFF correlated with harm avoidance. Scores in hyperdopaminergia and neuropsychiatric nonmotor ON correlated with novelty seeking. CONCLUSIONS When subthalamic stimulation is applied in Parkinson's disease, significant changes in personality traits are observed, which may be related to postoperative tapering of dopaminergic treatment. © 2017 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Eugénie Lhommée
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - François Boyer
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France
| | - Maxime Wack
- Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France.,Service d'épidémiologie et évaluation cliniques, CHU de Nancy, Vandœuvre-lès-Nancy, France
| | - Pierre Pélissier
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Hélène Klinger
- Hospices Civils de Lyon, Hôpital Neurologique, Neurologie C, Lyon, France.,Faculté de Médecine et de Maïeutique Lyon Sud Charles Mérieux, Université de Lyon 1, Lyon, France.,CNRS, UMR 5229, Centre de Neurosciences Cognitives, Bron, France
| | - Emmanuelle Schmitt
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Amélie Bichon
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Valérie Fraix
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Stéphan Chabardès
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France.,Department of neurosurgery, CHU Grenoble Alpes, Grenoble, France
| | - Patrick Mertens
- Faculté de Médecine et de Maïeutique Lyon Sud Charles Mérieux, Université de Lyon 1, Lyon, France.,Hospices Civils de Lyon, Hôpital Neurologique, Neurochirurgie A, Lyon, France
| | - Anna Castrioto
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Andrea Kistner
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France
| | - Emmanuel Broussolle
- Hospices Civils de Lyon, Hôpital Neurologique, Neurologie C, Lyon, France.,Faculté de Médecine et de Maïeutique Lyon Sud Charles Mérieux, Université de Lyon 1, Lyon, France.,CNRS, UMR 5229, Centre de Neurosciences Cognitives, Bron, France
| | - Stéphane Thobois
- Hospices Civils de Lyon, Hôpital Neurologique, Neurologie C, Lyon, France.,Faculté de Médecine et de Maïeutique Lyon Sud Charles Mérieux, Université de Lyon 1, Lyon, France.,CNRS, UMR 5229, Centre de Neurosciences Cognitives, Bron, France
| | - Paul Krack
- Movement Disorders Unit, Department of Psychiatry Neurology and Neurological Rehabilitation, CHU Grenoble Alpes, Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France.,Inserm, U1216, Grenoble, France.,Present address: Department of Clinical Neuroscience, Hôpitaux Universitaires de Genève, Faculty University of Geneva, Switzerland
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25
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Barbieri FA, Simieli L, Orcioli-Silva D, Baptista AM, Borkowske Pestana M, Spiandor Beretta V, Dos Santos PCR, Bucken Gobbi LT. Obstacle Avoidance Increases Asymmetry of Crossing Step in Individuals With Parkinson's Disease and Neurologically Healthy Individuals. J Mot Behav 2017. [PMID: 28632105 DOI: 10.1080/00222895.2016.1271303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The authors' aim was to investigate gait asymmetry of crossing step during obstacle avoidance while walking in people with Parkinson's disease (PD) under and without the effects of dopaminergic medication. Thirteen individuals with PD and 13 neurologically healthy individuals performed 5 trials of unobstructed gait and 10 trials of obstacle crossing during gait (5 trials with each leg) and spatiotemporal parameters were analyzed. Obstacle crossing increased step duration of the crossing step for the most-affected or nondominant limb compared to the crossing step with the least-affected or dominant limb. Individuals with PD without the effects of medication increased step duration for the step with the least-affected limb compared to the step with the most-affected limb during obstacle crossing.
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Affiliation(s)
- Fabio Augusto Barbieri
- a Human Movement Research Laboratory (MOVI-LAB), Faculty of Science, Department of Physical Education , Universidade Estadual Paulista-UNESP , Bauru , Brazil.,b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Lucas Simieli
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Diego Orcioli-Silva
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - André Macari Baptista
- a Human Movement Research Laboratory (MOVI-LAB), Faculty of Science, Department of Physical Education , Universidade Estadual Paulista-UNESP , Bauru , Brazil.,b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Mayara Borkowske Pestana
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Victor Spiandor Beretta
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Paulo Cezar Rocha Dos Santos
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
| | - Lilian Teresa Bucken Gobbi
- b Posture and Gait Studies Laboratory (LEPLO), Bioscience Institute, Department of Physical Education , Universidade Estadual Paulista-UNESP , Rio Claro , Brazil
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26
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Personality in Parkinson's disease: Clinical, behavioural and cognitive correlates. J Neurol Sci 2017; 374:17-25. [DOI: 10.1016/j.jns.2017.01.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 01/04/2017] [Indexed: 11/17/2022]
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27
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Parkinsonian motor impairment predicts personality domains related to genetic risk and treatment outcomes in schizophrenia. NPJ SCHIZOPHRENIA 2017; 3:16036. [PMID: 28127577 PMCID: PMC5226082 DOI: 10.1038/npjschz.2016.36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 08/19/2016] [Accepted: 09/23/2016] [Indexed: 12/27/2022]
Abstract
Identifying endophenotypes of schizophrenia is of critical importance and has profound implications on clinical practice. Here we propose an innovative approach to clarify the mechanims through which temperament and character deviance relates to risk for schizophrenia and predict long-term treatment outcomes. We recruited 61 antipsychotic naïve subjects with chronic schizophrenia, 99 unaffected relatives, and 68 healthy controls from rural communities in the Central Andes. Diagnosis was ascertained with the Schedules of Clinical Assessment in Neuropsychiatry; parkinsonian motor impairment was measured with the Unified Parkinson’s Disease Rating Scale; mesencephalic parenchyma was evaluated with transcranial ultrasound; and personality traits were assessed using the Temperament and Character Inventory. Ten-year outcome data was available for ~40% of the index cases. Patients with schizophrenia had higher harm avoidance and self-transcendence (ST), and lower reward dependence (RD), cooperativeness (CO), and self-directedness (SD). Unaffected relatives had higher ST and lower CO and SD. Parkinsonism reliably predicted RD, CO, and SD after correcting for age and sex. The average duration of untreated psychosis (DUP) was over 5 years. Further, SD was anticorrelated with DUP and antipsychotic dosing at follow-up. Baseline DUP was related to antipsychotic dose-years. Further, ‘explosive/borderline’, ‘methodical/obsessive’, and ‘disorganized/schizotypal’ personality profiles were associated with increased risk of schizophrenia. Parkinsonism predicts core personality features and treatment outcomes in schizophrenia. Our study suggests that RD, CO, and SD are endophenotypes of the disease that may, in part, be mediated by dopaminergic function. Further, SD is an important determinant of treatment course and outcome.
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28
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Qamar MA, Sauerbier A, Politis M, Carr H, Loehrer PA, Chaudhuri KR. Presynaptic dopaminergic terminal imaging and non-motor symptoms assessment of Parkinson's disease: evidence for dopaminergic basis? NPJ Parkinsons Dis 2017; 3:5. [PMID: 28649605 PMCID: PMC5445592 DOI: 10.1038/s41531-016-0006-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/04/2016] [Accepted: 11/25/2016] [Indexed: 02/08/2023] Open
Abstract
Parkinson's disease (PD) is now considered to be a multisystemic disorder consequent on multineuropeptide dysfunction including dopaminergic, serotonergic, cholinergic, and noradrenergic systems. This multipeptide dysfunction leads to expression of a range of non-motor symptoms now known to be integral to the concept of PD and preceding the diagnosis of motor PD. Some non-motor symptoms in PD may have a dopaminergic basis and in this review, we investigate the evidence for this based on imaging techniques using dopamine-based radioligands. To discuss non-motor symptoms we follow the classification as outlined by the validated PD non-motor symptoms scale.
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Affiliation(s)
- MA Qamar
- National Parkinson’s Foundation International Center of Excellence, King’s College London and King’s College Hospital NHS Foundation Trust, London, UK
| | - A Sauerbier
- National Parkinson’s Foundation International Center of Excellence, King’s College London and King’s College Hospital NHS Foundation Trust, London, UK
| | - M Politis
- Neurodegeneration Imaging Group, Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King’s College London, London, UK
| | - H Carr
- National Parkinson’s Foundation International Center of Excellence, King’s College London and King’s College Hospital NHS Foundation Trust, London, UK
| | - P A Loehrer
- National Parkinson’s Foundation International Center of Excellence, King’s College London and King’s College Hospital NHS Foundation Trust, London, UK
- Department of Neurology, University Hospital Cologne, Cologne, Germany
| | - K Ray Chaudhuri
- National Parkinson’s Foundation International Center of Excellence, King’s College London and King’s College Hospital NHS Foundation Trust, London, UK
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29
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Ehgoetz Martens KA, Lewis SJG. Pathology of behavior in PD: What is known and what is not? J Neurol Sci 2016; 374:9-16. [PMID: 28089250 DOI: 10.1016/j.jns.2016.12.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 12/28/2016] [Indexed: 12/12/2022]
Abstract
Abnormal behavior in Parkinson's disease (PD) stems from a complex orchestration of impaired neural networks that result from PD-related neurodegeneration across multiple levels. Typically, cellular and tissue abnormalities generate neurochemical changes and disrupt specific regions of the brain, in turn creating impaired neural circuits and dysfunctional global networks. The objective of this chapter is to provide an overview of the array of pathological changes that have been linked to different behavioral symptoms of PD such as depression, anxiety, apathy, fatigue, impulse control disorders, psychosis, sleep disorders and dementia.
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Affiliation(s)
- Kaylena A Ehgoetz Martens
- Parkinson Disease Research Clinic, Brain and Mind Centre, University of Sydney, 100 Mallet Street, Camperdown, 2050, NSW, Australia.
| | - Simon J G Lewis
- Parkinson Disease Research Clinic, Brain and Mind Centre, University of Sydney, 100 Mallet Street, Camperdown, 2050, NSW, Australia
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30
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Roberts K, Hemmings AJ, Moore-Colyer M, Parker MO, McBride SD. Neural modulators of temperament: A multivariate approach to personality trait identification in the horse. Physiol Behav 2016; 167:125-131. [PMID: 27597134 DOI: 10.1016/j.physbeh.2016.08.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/25/2016] [Accepted: 08/29/2016] [Indexed: 11/18/2022]
Abstract
A relationship between dopamine and temperament has previously been described in human cases of dopaminergic dysfunction. Adjustment in temperament prior to disease manifestation can enable the early identification of individuals at risk of such conditions, and scope exists to extend this application of temperament alterations to cases of dopaminergic dysfunction in horses. A multivariate and mixed-methods approach utilising a questionnaire along with two inferred measurements of dopamine activity (Spontaneous Blink Rate [SBR] and behavioral initiation rate [BIR]) were recorded from direct observation of animals (n=99) to identify the potential relationship between dopamine and temperament in horses. Principal components analysis (PCA) of 36 temperament variables revealed nine principal components, including 'Anxiety' and 'Docility', which accounted for 72.4% of the total variance. Component scores were calculated and correlated with SBR and BIR utilising Spearman rank correlation coefficient analysis. The component 'Anxiety' was found to have a significant positive relationship with SBR, whereas 'Docility' was observed to have a significant negative relationship with SBR. These results indicate a relationship between dopamine and temperament within the horse that is certainly worthy of further study. Potential mechanisms involving neural dopaminergic and GABAergic systems are presented, in addition to how such alterations could be utilised to probe for equine dopamine dysfunction pending future research.
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Affiliation(s)
- Kirsty Roberts
- Royal Agricultural University, Stroud Road, Cirencester, Gloucestershire GL7 6JS, United Kingdom.
| | - Andrew J Hemmings
- Royal Agricultural University, Stroud Road, Cirencester, Gloucestershire GL7 6JS, United Kingdom
| | - Meriel Moore-Colyer
- Royal Agricultural University, Stroud Road, Cirencester, Gloucestershire GL7 6JS, United Kingdom
| | - Matthew O Parker
- School of Health Sciences and Social Work, University of Portsmouth, James Watson West Building, 2 King Richard 1st Road, Portsmouth, Hampshire PO1 2FR, United Kingdom
| | - Sebastian D McBride
- Aberystwyth University, Penglais, Aberystwyth, Ceredigion SY23 3DA, United Kingdom
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31
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Ishii T, Sawamoto N, Tabu H, Kawashima H, Okada T, Togashi K, Takahashi R, Fukuyama H. Altered striatal circuits underlie characteristic personality traits in Parkinson's disease. J Neurol 2016; 263:1828-39. [PMID: 27334907 DOI: 10.1007/s00415-016-8206-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/11/2016] [Accepted: 06/12/2016] [Indexed: 11/29/2022]
Abstract
Patients with Parkinson's disease (PD) have been suggested to share personality traits characterised by low novelty-seeking and high harm-avoidance. Although a link between novelty-seeking and dopamine is hypothesised, the link is not fully supported by 6-[(18)F]fluoro-L-dopa positron emission tomography (PET) studies. Meanwhile, tractography studies with magnetic resonance imaging (MRI) link personality to the connectivity of the striatum in healthy subjects. Here, we investigated neurochemical and anatomical correlates of characteristic personality traits in PD. Sixteen PD patients and 28 healthy controls were assessed using the Temperament and Character Inventory. All patients and 17 randomly selected controls were scanned with 2β-carbomethoxy-3β-(4-fluorophenyl)-[N-(11)C-methyl]tropane ([(11)C]CFT) PET to measure striatal dopamine transporter availability. All subjects were scanned with MRI to evaluate the connectivity of the striatum using probabilistic tractography. PET findings revealed no correlation of novelty-seeking and harm-avoidance with [(11)C]CFT uptake in patients or controls. Novelty-seeking correlated positively with the connectivity strength of the striatum with the hippocampus and amygdala in both patients and controls. Harm-avoidance and the fibre connectivity strength of the striatum including ventral area with the amygdala correlated negatively in patients and positively in controls, which differed significantly between the groups. Our data support the notion that the fibre connectivity of the striatum with limbic and frontal areas underlies the personality profile. Furthermore, our findings suggest that higher harm-avoidance in PD is linked to alterations of the network, including the nucleus accumbens and amygdala.
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Affiliation(s)
- Toru Ishii
- Human Brain Research Center, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Nobukatsu Sawamoto
- Human Brain Research Center, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan. .,Department of Neurology, Kyoto University Graduate School of Medicine, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan. .,Department of Human Health Sciences, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Hayato Tabu
- Human Brain Research Center, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.,Department of Neurology, Kyoto University Graduate School of Medicine, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hidekazu Kawashima
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tomohisa Okada
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hidenao Fukuyama
- Human Brain Research Center, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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32
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Zou J, Weng RH, Chen ZY, Wei XB, Wang R, Chen D, Xia Y, Wang Q. Position Emission Tomography/Single-Photon Emission Tomography Neuroimaging for Detection of Premotor Parkinson's Disease. CNS Neurosci Ther 2016; 22:167-77. [PMID: 26776081 DOI: 10.1111/cns.12493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 11/12/2015] [Accepted: 11/14/2015] [Indexed: 12/21/2022] Open
Abstract
Premotor Parkinson's disease (PD) refers to a prodromal stage of Parkinson's disease (PD) during which nonmotor clinical features may be present. Currently, it is difficult to make an early diagnosis for premotor PD. Molecular imaging with position emission tomography (PET) or single-photon emission tomography (SPECT) offers a wide variety of tools for overcoming this difficulty. Indeed, molecular imaging techniques may play a crucial role in diagnosing, monitoring and evaluating the individuals with the risk for PD. For example, dopaminergic dysfunctions can be identified by detecting the expression of vesicular monoamine transporter (VMAT2) and aromatic amino acid decarboxylase (AADC) to evaluate the conditions of dopaminergic terminals functions in high-risk individuals of PD. This detection provides a sensitive and specific measurement of nonmotor symptoms (NMS) such as olfactory dysfunction, sleep disorders, and psychiatric symptoms in the high-risk patients, especially at the premotor phase. Molecular imaging technique is capable of detecting the dysfunction of serotonergic, noradrenergic, and cholinergic systems that are typically associated with premotor manifestations. This review discusses the importance of SPECT/PET applications in the detection of premotor markers preceding motor abnormalities with highlighting their great potential for early and accurate diagnosis of premotor symptoms of PD and its scientific significance.
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Affiliation(s)
- Jing Zou
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Rui-Hui Weng
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhao-Yu Chen
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiao-Bo Wei
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Rui Wang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Dan Chen
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Ying Xia
- Department of Neurosurgery, The University of Texas Medical School at Houston, Houston, TX, USA
| | - Qing Wang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
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Self-transcendence trait and its relationship with in vivo serotonin transporter availability in brainstem raphe nuclei: An ultra-high resolution PET-MRI study. Brain Res 2015; 1629:63-71. [PMID: 26459992 DOI: 10.1016/j.brainres.2015.10.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 09/08/2015] [Accepted: 10/01/2015] [Indexed: 01/12/2023]
Abstract
Self-transcendence is an inherent human personality trait relating to the experience of spiritual aspects of the self. We examined the relationship between self-transcendence and serotonin transporter (SERT) availability in brainstem raphe nuclei, which are collections of five different serotonergic nuclei with rostro-caudal extension, using ultra-high resolution magnetic resonance imaging (MRI) and positron emission tomography (PET) with (11)C-3-amino-4-(2-dimethylaminomethylphenylthio)benzonitrile ([(11)C]DASB) to elucidate potential roles of serotonergic neuronal activities in this personality trait. Sixteen healthy subjects completed 7.0T MRI and High Resolution Research Tomograph (HRRT) PET. The regions of interest (ROIs) included the dorsal raphe nucleus (R1), median raphe nucleus (R2), raphe pontis (R3), and the caudal raphe nuclei (R4 and R5). For the estimation of SERT availability, the binding potential (BPND) was derived using the simplified reference tissue model (SRTM2). The Temperament and Character Inventory was used to measure self-transcendence. The analysis revealed that the self-transcendence total score had a significant negative correlation with the [(11)C]DASB BPND in the caudal raphe (R5). The subscale score for spiritual acceptance was significantly negatively correlated with the [(11)C]DASB BPND in the median raphe nucleus (R2). The results indicate that the self-transcendence trait is associated with SERT availability in specific raphe subnuclei, suggesting that the serotonin system may serve as an important biological basis for human self-transcendence. Based on the connections of these nuclei with cortico-limbic and visceral autonomic structures, the functional activity of these nuclei and their related neural circuitry may play a crucial role in the manifestation of self-transcendence.
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Marconi S, Scarlatti F, Rizzo G, Antelmi E, Innamorati M, Pompili M, Brugnoli R, Belvederi Murri M, Amore M, Provini F. Is nocturnal eating in restless legs syndrome linked to a specific psychopathological profile? A pilot study. J Neural Transm (Vienna) 2015; 122:1563-71. [DOI: 10.1007/s00702-015-1435-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 07/24/2015] [Indexed: 10/23/2022]
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Costa A, Caltagirone C. Individual differences in approach-avoidance aptitude: some clues from research on Parkinson's disease. Front Syst Neurosci 2015; 9:43. [PMID: 25852500 PMCID: PMC4371695 DOI: 10.3389/fnsys.2015.00043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 03/05/2015] [Indexed: 11/13/2022] Open
Abstract
Approach and avoidance are two basic behavioral aptitudes of humans whose correct balance is critical for successful adaptation to the environment. As the expression of approach and avoidance tendencies may differ significantly between healthy individuals, different psychobiological factors have been posited to account for such variability. In this regard, two main issues are still open that refers to (i) the role played by dopamine neurotransmission; and (ii) the possible influence of cognitive characteristics, particularly executive functioning. The aim of the present paper was to highlight the contribution of research on Parkinson's disease (PD) to our understanding of the above issues. In particular, we here reviewed PD literature to clarify whether neurobiological and neuropsychological modifications due to PD are associated to changes in approach-avoidance related personality features. Available data indicate that PD patients may show and approach-avoidance imbalance as documented by lower novelty-seeking and higher harm-avoidance behaviors, possibly suggesting a relationship with neurobiological and neurocognitive PD-related changes. However, the literature that directly investigated this issue is still sparse and much more work is needed to better clarify it.
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Affiliation(s)
- Alberto Costa
- Department of Clinical and Behavioural Neurology, IRCCS Santa Lucia Foundation Rome, Italy
| | - Carlo Caltagirone
- Department of Clinical and Behavioural Neurology, IRCCS Santa Lucia Foundation Rome, Italy ; Dipartimento di Medicina dei Sistemi, Rome University Tor Vergata Rome, Italy
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Takeuchi H, Taki Y, Sekiguchi A, Hashizume H, Nouchi R, Sassa Y, Kotozaki Y, Miyauchi CM, Yokoyama R, Iizuka K, Nakagawa S, Nagase T, Kunitoki K, Kawashima R. Mean diffusivity of globus pallidus associated with verbal creativity measured by divergent thinking and creativity-related temperaments in young healthy adults. Hum Brain Mapp 2015; 36:1808-27. [PMID: 25627674 PMCID: PMC5024049 DOI: 10.1002/hbm.22739] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 11/22/2014] [Accepted: 01/06/2015] [Indexed: 12/03/2022] Open
Abstract
Recent investigations revealed mean diffusivity (MD) in gray matter and white matter areas is correlated with individual cognitive differences in healthy subjects and show unique properties and sensitivity that other neuroimaging tools donot have. In this study, we tested the hypothesis that the MD in the dopaminergic system is associated with individual differences in verbal creativity measured by divergent thinking (VCDT) and novelty seeking based on prior studies suggesting associations between these and dopaminergic functions. We examined this issue in a large sample of right‐handed healthy young adults. We used analyses of MD and a psychological measure of VCDT, as well as personality measures of the Temperament and Character Inventory (TCI). Our results revealed associations between higher VCDT and lower MD in the bilateral globus pallidus. Furthermore, not only higher novelty seeking, but also lower harm avoidance, higher self‐directedness, and higher self‐transcendence were robustly associated with lower MD in the right globus pallidus, whereas higher persistence was associated with lower MD in the left globus pallidus. These personality variables were also associated with VCDT. The globus pallidus receives the dopaminergic input from the substantia nigra and plays a key role in motivation which is critically linked to dopamine. These results suggested the MD in the globus pallidus, underlie the association between VCDT and multiple personalities in TCI including novelty seeking. Hum Brain Mapp 36:1808–1827, 2015. © 2015 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Hikaru Takeuchi
- Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
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Sako W, Uluğ AM, Eidelberg D. Functional Imaging to Study Movement Disorders. Mov Disord 2015. [DOI: 10.1016/b978-0-12-405195-9.00012-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Järvelä JT, Rinne JO, Eskola O, Kaasinen V. Mortality in Parkinson's disease is not associated with the severity of early dopaminergic defect. Parkinsonism Relat Disord 2014; 20:894-7. [DOI: 10.1016/j.parkreldis.2014.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 05/05/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
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Frontal white matter alterations in short-term medicated panic disorder patients without comorbid conditions: a diffusion tensor imaging study. PLoS One 2014; 9:e95279. [PMID: 24788587 PMCID: PMC4005735 DOI: 10.1371/journal.pone.0095279] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 03/25/2014] [Indexed: 01/04/2023] Open
Abstract
The frontal cortex might play an important role in the fear network, and white matter (WM) integrity could be related to the pathophysiology of panic disorder (PD). A few studies have investigated alterations of WM integrity in PD. The aim of this study was to determine frontal WM integrity differences between patients with PD without comorbid conditions and healthy control (HC) subjects by using diffusion tensor imaging. Thirty-six patients with PD who had used medication within 1 week and 27 age- and sex-matched HC subjects participated in this study. Structural brain magnetic resonance imaging was performed on all participants. Panic Disorder Severity Scale and Beck Anxiety Inventory (BAI) scores were assessed. Tract-based spatial statistics (TBSS) was used for image analysis. TBSS analysis showed decreased fractional anisotropy (FA) in frontal WM and WM around the frontal lobe, including the corpus callosum of both hemispheres, in patients with PD compared to HC subjects. Moreover, voxel-wise correlation analysis revealed that the BAI scores for patients with PD were positively correlated with their FA values for regions showing group differences in the FA of frontal WM of both hemispheres. Altered integrity in frontal WM of patients with PD without comorbid conditions might represent the structural pathophysiology in these patients, and these changes could be related to clinical symptoms of PD.
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Storage S, Mandelkern MA, Phuong J, Kozman M, Neary MK, Brody AL. A positive relationship between harm avoidance and brain nicotinic acetylcholine receptor availability. Psychiatry Res 2013; 214:415-21. [PMID: 24148908 PMCID: PMC3851586 DOI: 10.1016/j.pscychresns.2013.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 06/22/2013] [Accepted: 07/25/2013] [Indexed: 01/28/2023]
Abstract
Prior research indicates that disturbance of cholinergic neurotransmission reduces anxiety, leading to the hypothesis that people with heightened cholinergic function have a greater tendency toward anxiety-like and/or harm-avoidant behavior. We sought to determine if people with elevated levels of harm avoidance (HA), a dimension of temperament from the Temperament and Character Inventory (TCI), have high α4β2* nicotinic acetylcholine receptor (nAChR) availability. Healthy adults (n=105; 47 non-smokers and 58 smokers) underwent bolus-plus-continuous infusion positron emission tomography (PET) scanning using the radiotracer 2-[18F]fluoro-3-(2(S)azetidinylmethoxy) pyridine (abbreviated as 2-FA). During the uptake period of 2-FA, participants completed the TCI. The central study analysis revealed a significant association between total HA and mean nAChR availability, with higher total HA scores being linked with greater nAChR availability. In examining HA subscales, both 'Fear of Uncertainty' and 'Fatigability' were significant, based on higher levels of these characteristics being associated with greater nAChR availabilities. This study adds to a growing body of knowledge concerning the biological basis of personality and may prove useful in understanding the pathophysiology of psychiatric disorders (such as anxiety disorders) that have similar characteristics to HA. Study findings may indicate that heightened cholinergic neurotransmission is associated with increased anxiety-like traits.
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Affiliation(s)
- Steven Storage
- UCLA School of Medicine, Los Angeles, California, USA,Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Mark A. Mandelkern
- Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA,Department of Physics, University of California at Irvine, California, USA
| | - Jonathan Phuong
- Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Maggie Kozman
- Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Meaghan K. Neary
- Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Arthur L. Brody
- UCLA School of Medicine, Los Angeles, California, USA,Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA,Department of Psychiatry, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA,Corresponding author at: UCLA Department of Psychiatry & Biobehavioral Sciences 300 UCLA Medical Plaza, Suite 2200 Los Angeles, CA 90095. Tel.: +310 268 4778; fax: +310 206 2802.
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Helie S, Chakravarthy S, Moustafa AA. Exploring the cognitive and motor functions of the basal ganglia: an integrative review of computational cognitive neuroscience models. Front Comput Neurosci 2013; 7:174. [PMID: 24367325 PMCID: PMC3854553 DOI: 10.3389/fncom.2013.00174] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/15/2013] [Indexed: 01/18/2023] Open
Abstract
Many computational models of the basal ganglia (BG) have been proposed over the past twenty-five years. While computational neuroscience models have focused on closely matching the neurobiology of the BG, computational cognitive neuroscience (CCN) models have focused on how the BG can be used to implement cognitive and motor functions. This review article focuses on CCN models of the BG and how they use the neuroanatomy of the BG to account for cognitive and motor functions such as categorization, instrumental conditioning, probabilistic learning, working memory, sequence learning, automaticity, reaching, handwriting, and eye saccades. A total of 19 BG models accounting for one or more of these functions are reviewed and compared. The review concludes with a discussion of the limitations of existing CCN models of the BG and prescriptions for future modeling, including the need for computational models of the BG that can simultaneously account for cognitive and motor functions, and the need for a more complete specification of the role of the BG in behavioral functions.
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Affiliation(s)
- Sebastien Helie
- Department of Psychological Sciences, Purdue University West Lafayette, IN, USA
| | | | - Ahmed A Moustafa
- Department of Psychological Sciences, Purdue University West Lafayette, IN, USA
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42
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Kaye WH, Wierenga CE, Bailer UF, Simmons AN, Wagner A, Bischoff-Grethe A. Does a shared neurobiology for foods and drugs of abuse contribute to extremes of food ingestion in anorexia and bulimia nervosa? Biol Psychiatry 2013; 73:836-42. [PMID: 23380716 PMCID: PMC3755487 DOI: 10.1016/j.biopsych.2013.01.002] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 12/12/2012] [Accepted: 01/04/2013] [Indexed: 01/08/2023]
Abstract
Is starvation in anorexia nervosa (AN) or overeating in bulimia nervosa (BN) a form of addiction? Alternatively, why are individuals with BN more vulnerable and individuals with AN protected from substance abuse? Such questions have been generated by recent studies suggesting that there are overlapping neural circuits for foods and drugs of abuse. To determine whether a shared neurobiology contributes to eating disorders and substance abuse, this review focused on imaging studies that investigated response to tastes of food and tasks designed to characterize reward and behavioral inhibition in AN and BN. BN and those with substance abuse disorders may share dopamine D2 receptor-related vulnerabilities, and opposite findings may contribute to "protection" from substance abuse in AN. Moreover, imaging studies provide insights into executive corticostriatal processes related to extraordinary inhibition and self-control in AN and diminished inhibitory self-control in BN that may influence the rewarding aspect of palatable foods and likely other consummatory behaviors. AN and BN tend to have premorbid traits, such as perfectionism and anxiety that make them vulnerable to using extremes of food ingestion, which serve to reduce negative mood states. Dysregulation within and/or between limbic and executive corticostriatal circuits contributes to such symptoms. Limited data support the hypothesis that reward and inhibitory processes may contribute to symptoms in eating disorders and addictive disorders, but little is known about the molecular biology of such mechanisms in terms of shared or independent processes.
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Affiliation(s)
- Walter H Kaye
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA.
| | | | - Ursula F Bailer
- University of California San Diego, Department of Psychiatry, La Jolla CA,Medical University of Vienna, Department of Psychiatry and Psychotherapy, Division of Biological Psychiatry, Vienna, Austria
| | - Alan N Simmons
- University of California San Diego, Department of Psychiatry, La Jolla CA,Veterans Affairs San Diego Healthcare System, Psychiatry Service, San Diego CA,Veterans Affairs San Diego Healthcare System, Research Service, San Diego CA
| | - Angela Wagner
- University of California San Diego, Department of Psychiatry, La Jolla CA
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Bailer UF, Frank GK, Price JC, Meltzer CC, Becker C, Mathis CA, Wagner A, Barbarich-Marsteller NC, Bloss CS, Putnam K, Schork NJ, Gamst A, Kaye WH. Interaction between serotonin transporter and dopamine D2/D3 receptor radioligand measures is associated with harm avoidant symptoms in anorexia and bulimia nervosa. Psychiatry Res 2013; 211:160-8. [PMID: 23154100 PMCID: PMC3880148 DOI: 10.1016/j.pscychresns.2012.06.010] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 06/25/2012] [Accepted: 06/29/2012] [Indexed: 10/27/2022]
Abstract
Individuals with anorexia nervosa (AN) and bulimia nervosa (BN) have alterations of measures of serotonin (5-HT) and dopamine (DA) function, which persist after long-term recovery and are associated with elevated harm avoidance (HA), a measure of anxiety and behavioral inhibition. Based on theories that 5-HT is an aversive motivational system that may oppose a DA-related appetitive system, we explored interactions of positron emission tomography (PET) radioligand measures that reflect portions of these systems. Twenty-seven individuals recovered (REC) from eating disorders (EDs) (7 AN-BN, 11 AN, 9 BN) and nine control women (CW) were analyzed for correlations between [(11)C]McN5652 and [(11)C]raclopride binding. There was a significant positive correlation between [(11)C]McN5652 binding potential (BP(non displaceable(ND))) and [(11)C]Raclopride BP(ND) for the dorsal caudate, antero-ventral striatum (AVS), middle caudate, and ventral and dorsal putamen. No significant correlations were found in CW. [(11)C]Raclopride BP(ND), but not [(11)C]McN5652 BP(ND), was significantly related to HA in REC EDs. A linear regression analysis showed that the interaction between [(11)C]McN5652 BP(ND) and [(11)C]raclopride BP(ND) in the dorsal putamen significantly predicted HA. This is the first study using PET and the radioligands [(11)C]McN5652 and [(11)C]raclopride to show a direct relationship between 5-HT transporter and striatal DA D2/D3 receptor binding in humans, supporting the possibility that 5-HT and DA interactions contribute to HA behaviors in EDs.
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Affiliation(s)
- Ursula F. Bailer
- University of California San Diego, Department of Psychiatry, La Jolla, CA,Medical University of Vienna, Department of Psychiatry and Psychotherapy, Division of Biological Psychiatry, Vienna, Austria
| | - Guido K. Frank
- Department of Psychiatry, University of Colorado Denver, Children’s Hospital Colorado, Aurora, CO, USA,Department of Neuroscience, University of Colorado Denver; Anschutz Medical Campus, Aurora, CO, USA
| | - Julie C. Price
- University of Pittsburgh, School of Medicine, Department of Radiology, Presbyterian University Hospital, Pittsburgh, PA
| | - Carolyn C. Meltzer
- University of Pittsburgh, School of Medicine, Department of Radiology, Presbyterian University Hospital, Pittsburgh, PA,University of Pittsburgh, School of Medicine, Department of Psychiatry, Western Psychiatric Institute and Clinic, Pittsburgh, PA,Emory School of Medicine, Departments of Radiology, Neurology, and Psychiatry and Behavioral Sciences, Atlanta, Georgia, and Adjunct Professor of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Carl Becker
- University of Pittsburgh, School of Medicine, Department of Radiology, Presbyterian University Hospital, Pittsburgh, PA
| | - Chester A. Mathis
- University of Pittsburgh, School of Medicine, Department of Radiology, Presbyterian University Hospital, Pittsburgh, PA
| | - Angela Wagner
- University of California San Diego, Department of Psychiatry, La Jolla, CA
| | | | - Cinnamon S. Bloss
- Scripps Genomic Medicine, Scripps Translational Science Institute (STSI), and Scripps Health, La Jolla, CA
| | - Karen Putnam
- Department of Environmental Health, Division of Epidemiology and Biostatistics, University of Cincinnati, School of Medicine, Cincinnati, Ohio
| | - Nicholas J. Schork
- Department of Environmental Health, Division of Epidemiology and Biostatistics, University of Cincinnati, School of Medicine, Cincinnati, Ohio
| | - Anthony Gamst
- University of California San Diego, Department of Biostatistics and Bioinformatics, La Jolla, CA
| | - Walter H. Kaye
- University of California San Diego, Department of Psychiatry, La Jolla, CA,Corresponding author: Walter H. Kaye, M.D., University of California, San Diego, UCSD Department of Psychiatry, 8950 Villa La Jolla Drive, Suite C – 207, La Jolla, California 92037, Tel. (858) 534 3951, FAX: (858) 534 6727,
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Lawrence AD, Brooks DJ, Whone AL. Ventral striatal dopamine synthesis capacity predicts financial extravagance in Parkinson's disease. Front Psychol 2013; 4:90. [PMID: 23450713 PMCID: PMC3583186 DOI: 10.3389/fpsyg.2013.00090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 02/07/2013] [Indexed: 02/01/2023] Open
Abstract
Impulse control disorders (ICDs), including disordered gambling, can occur in a significant number of patients with Parkinson’s disease (PD) receiving dopaminergic therapy. The neurobiology underlying susceptibility to such problems is unclear, but risk likely results from an interaction between dopaminergic medication and a pre-existing trait vulnerability. Impulse control and addictive disorders form part of a broader psychopathological spectrum of disorders, which share a common underlying genetic vulnerability, referred to as externalizing. The broad externalizing risk factor is a continuously varying trait reflecting vulnerability to various impulse control problems, manifested at the overt level by disinhibitory symptoms and at the personality level by antecedent traits such as impulsivity and novelty/sensation seeking. Trait “disinhibition” is thus a core endophenotype of ICDs, and a key target for neurobiological investigation. The ventral striatal dopamine system has been hypothesized to underlie individual variation in behavioral disinhibition. Here, we examined whether individual differences in ventral striatal dopamine synthesis capacity predicted individual variation in disinhibitory temperament traits in individuals with PD. Eighteen early-stage male PD patients underwent 6-[18F]Fluoro-l-DOPA (FDOPA) positron emission tomography scanning to measure striatal dopamine synthesis capacity, and completed a measure of disinhibited personality. Consistent with our predictions, we found that levels of ventral, but not dorsal, striatal dopamine synthesis capacity predicted disinhibited personality, particularly a propensity for financial extravagance. Our results are consistent with recent preclinical models of vulnerability to behavioral disinhibition and addiction proneness, and provide novel insights into the neurobiology of potential vulnerability to impulse control problems in PD and other disorders.
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Amin N, Hottenga JJ, Hansell NK, Janssens ACJW, de Moor MHM, Madden PAF, Zorkoltseva IV, Penninx BW, Terracciano A, Uda M, Tanaka T, Esko T, Realo A, Ferrucci L, Luciano M, Davies G, Metspalu A, Abecasis GR, Deary IJ, Raikkonen K, Bierut LJ, Costa PT, Saviouk V, Zhu G, Kirichenko AV, Isaacs A, Aulchenko YS, Willemsen G, Heath AC, Pergadia ML, Medland SE, Axenovich TI, de Geus E, Montgomery GW, Wright MJ, Oostra BA, Martin NG, Boomsma DI, van Duijn CM. Refining genome-wide linkage intervals using a meta-analysis of genome-wide association studies identifies loci influencing personality dimensions. Eur J Hum Genet 2012; 21:876-82. [PMID: 23211697 DOI: 10.1038/ejhg.2012.263] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 09/21/2012] [Accepted: 10/26/2012] [Indexed: 11/10/2022] Open
Abstract
Personality traits are complex phenotypes related to psychosomatic health. Individually, various gene finding methods have not achieved much success in finding genetic variants associated with personality traits. We performed a meta-analysis of four genome-wide linkage scans (N=6149 subjects) of five basic personality traits assessed with the NEO Five-Factor Inventory. We compared the significant regions from the meta-analysis of linkage scans with the results of a meta-analysis of genome-wide association studies (GWAS) (N∼17 000). We found significant evidence of linkage of neuroticism to chromosome 3p14 (rs1490265, LOD=4.67) and to chromosome 19q13 (rs628604, LOD=3.55); of extraversion to 14q32 (ATGG002, LOD=3.3); and of agreeableness to 3p25 (rs709160, LOD=3.67) and to two adjacent regions on chromosome 15, including 15q13 (rs970408, LOD=4.07) and 15q14 (rs1055356, LOD=3.52) in the individual scans. In the meta-analysis, we found strong evidence of linkage of extraversion to 4q34, 9q34, 10q24 and 11q22, openness to 2p25, 3q26, 9p21, 11q24, 15q26 and 19q13 and agreeableness to 4q34 and 19p13. Significant evidence of association in the GWAS was detected between openness and rs677035 at 11q24 (P-value=2.6 × 10(-06), KCNJ1). The findings of our linkage meta-analysis and those of the GWAS suggest that 11q24 is a susceptible locus for openness, with KCNJ1 as the possible candidate gene.
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Affiliation(s)
- Najaf Amin
- Unit of Genetic Epidemiology, Department of Epidemiology and Biostatistics, Erasmus University Medical Center, Rotterdam, The Netherlands
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Erro R, Pappatà S, Amboni M, Vicidomini C, Longo K, Santangelo G, Picillo M, Vitale C, Moccia M, Giordano F, Brunetti A, Pellecchia MT, Salvatore M, Barone P. Anxiety is associated with striatal dopamine transporter availability in newly diagnosed untreated Parkinson's disease patients. Parkinsonism Relat Disord 2012; 18:1034-8. [DOI: 10.1016/j.parkreldis.2012.05.022] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 05/21/2012] [Accepted: 05/24/2012] [Indexed: 11/27/2022]
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Ceravolo R, Frosini D, Poletti M, Kiferle L, Pagni C, Mazzucchi S, Volterrani D, Bonuccelli U. Mild affective symptoms in de novo Parkinson's disease patients: relationship with dopaminergic dysfunction. Eur J Neurol 2012; 20:480-485. [PMID: 23078376 DOI: 10.1111/j.1468-1331.2012.03878.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 08/21/2012] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND PURPOSE The investigation of the relationship between affective symptoms and dopamine transporter (DAT) density provided conflicting data in both Parkinson's disease (PD) and non-PD patients. However, the potential interference of psychoactive as well as anti-parkinsonian drugs on DAT density should be taken into account. OBJECTIVE To investigate the relationship between affective symptoms and pre-synaptic dopaminergic function in de novo PD patients. METHODS Forty-four de novo PD consecutive outpatients were recruited, and the severity of anxious symptoms was evaluated with the Hamilton Anxiety Rating Scale (HAM-A), the severity of depressive symptoms with the Hamilton Depression Scale (HAM-D) and the Beck Depression Inventory (BDI). Six patients had a formal diagnosis of depression. All patients performed (123) I-FP-CIT SPECT, and semi-quantitative striatal indices were calculated. RESULTS Disease severity, as measured by Unified Parkinson's Disease Rating Scale (UPDRSIII), was inversely correlated with bilateral striatal indices. Bilateral striatal uptake was significantly positively correlated with HAM-D (r.329; r.423, respectively, right and left), BDI (r.377; r.360, respectively, right and left) and HAM-A (r.338; r.340, respectively, right and left). After controlling for age, disease duration and severity, and Mini Mental State Examination (MMSE), no significant reduction in r-values was observed (P < 0.05). CONCLUSION Our data support the existence of a relationship between depressive and anxious symptoms and the striatal (123) I-FP-CIT uptake. The finding of an increased DAT density associated with mild affective symptoms could be due to the lack of compensatory mechanisms usually present in early PD, and/or it might have a pathogenic role in affective symptoms by reducing the dopaminergic tone in the synaptic cleft.
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Affiliation(s)
- R Ceravolo
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - D Frosini
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - M Poletti
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - L Kiferle
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - C Pagni
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - S Mazzucchi
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - D Volterrani
- Regional Center of Nuclear Medicine, University of Pisa, Pisa, Italy
| | - U Bonuccelli
- Neurology Unit, Department of Neuroscience, University of Pisa, Pisa, Italy
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Amin N, Schuur M, Gusareva ES, Isaacs A, Aulchenko YS, Kirichenko AV, Zorkoltseva IV, Axenovich TI, Oostra BA, Janssens ACJW, van Duijn CM. A genome-wide linkage study of individuals with high scores on NEO personality traits. Mol Psychiatry 2012; 17:1031-41. [PMID: 21826060 DOI: 10.1038/mp.2011.97] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The NEO-Five-Factor Inventory divides human personality traits into five dimensions: neuroticism, extraversion, openness, conscientiousness and agreeableness. In this study, we sought to identify regions harboring genes with large effects on the five NEO personality traits by performing genome-wide linkage analysis of individuals scoring in the extremes of these traits (>90th percentile). Affected-only linkage analysis was performed using an Illumina 6K linkage array in a family-based study, the Erasmus Rucphen Family study. We subsequently determined whether distinct, segregating haplotypes found with linkage analysis were associated with the trait of interest in the population. Finally, a dense single-nucleotide polymorphism genotyping array (Illumina 318K) was used to search for copy number variations (CNVs) in the associated regions. In the families with extreme phenotype scores, we found significant evidence of linkage for conscientiousness to 20p13 (rs1434789, log of odds (LOD)=5.86) and suggestive evidence of linkage (LOD >2.8) for neuroticism to 19q, 21q and 22q, extraversion to 1p, 1q, 9p and12q, openness to 12q and 19q, and agreeableness to 2p, 6q, 17q and 21q. Further analysis determined haplotypes in 21q22 for neuroticism (P-values = 0.009, 0.007), in 17q24 for agreeableness (marginal P-value = 0.018) and in 20p13 for conscientiousness (marginal P-values = 0.058, 0.038) segregating in families with large contributions to the LOD scores. No evidence for CNVs in any of the associated regions was found. Our findings imply that there may be genes with relatively large effects involved in personality traits, which may be identified with next-generation sequencing techniques.
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Affiliation(s)
- N Amin
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
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Stress, coping and cognitive deficits in women after surgery for breast cancer. J Clin Psychol Med Settings 2012; 19:127-37. [PMID: 22231422 DOI: 10.1007/s10880-011-9274-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Research on neuropsychological difficulties among cancer patients has focused on chemotherapy as a primary cause, yet several studies have now shown that some patients evidence cognitive weaknesses prior to chemotherapy. As an alternative to the 'chemo-brain' theory, this study examined the hypothesis that stress and coping style may be associated with observed neuropsychological difficulties among female cancer patients. Thirty-six women completed neuropsychological testing and psychological questionnaires following surgery for breast cancer and prior to any subsequent treatments. Twenty-seven percent of participants evidenced deficits on at least one measure of verbal fluency, and 14% of participants were impaired on at least one memory measure. Self-reported stress was correlated with deficits in memory, verbal fluency, and attention. Subsequent mediational analyses indicated that use of passive coping styles may underlie this relationship between stress and neuropsychological deficits. These findings highlight the potential relevance of psychological mechanisms, such as coping style, in cancer patients' experience of neuropsychological deficits.
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Di Giuda D, Camardese G, Bentivoglio AR, Cocciolillo F, Guidubaldi A, Pucci L, Bruno I, Janiri L, Giordano A, Fasano A. Dopaminergic dysfunction and psychiatric symptoms in movement disorders: a 123I-FP-CIT SPECT study. Eur J Nucl Med Mol Imaging 2012; 39:1937-48. [PMID: 22976499 DOI: 10.1007/s00259-012-2232-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 08/09/2012] [Indexed: 01/07/2023]
Abstract
PURPOSE Psychiatric symptoms frequently occur in patients with movement disorders. They are not a mere reaction to chronic disability, but most likely due to a combination of psychosocial factors and biochemical dysfunction underlying the movement disorder. We assessed dopamine transporter (DAT) availability by means of (123)I-FP-CIT SPECT, and motor and psychiatric features in patients with Parkinson's disease, primary dystonia and essential tremor, exploring the association between SPECT findings and symptom severity. METHODS Enrolled in the study were 21 patients with Parkinson's disease, 14 patients with primary dystonia and 15 patients with essential tremor. The severity of depression symptoms was assessed using the Hamilton depression rating scale, anxiety levels using the Hamilton anxiety rating scale and hedonic tone impairment using the Snaith-Hamilton pleasure scale. Specific (123)I-FP-CIT binding in the caudate and putamen was calculated based on ROI analysis. The control group included 17 healthy subjects. RESULTS As expected, DAT availability was significantly decreased in patients with Parkinson's disease, whereas in essential tremor and dystonia patients it did not differ from that observed in the control group. In Parkinson's disease patients, an inverse correlation between severity of depression symptoms and DAT availability in the left caudate was found (r = -0.63, p = 0.002). In essential tremor patients, levels of anxiety symptoms were inversely correlated with DAT availability in the left caudate (r = -0.69, p = 0.004). In dystonia patients, the severities of both anxiety and depression symptoms were inversely associated with DAT availability in the left putamen (r = -0.71, p = 0.004, and r = -0.75, p = 0.002, respectively). There were no correlations between psychometric scores and (123)I-FP-CIT uptake ratios in healthy subjects. CONCLUSION We found association between presynaptic dopaminergic function and affective symptoms in different movement disorders. Interestingly, the inverse correlation was present in each group of patients, supporting the fascinating perspective that common subcortical substrates may be involved in both anxiety and depression dimensions and movement disorders.
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Affiliation(s)
- Daniela Di Giuda
- Istituto di Medicina Nucleare, Università Cattolica del Sacro Cuore, Rome, Italy.
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