Daniel Weintraub

Medical University of South Carolina, Charleston, South Carolina, United States

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Publications (135)706.34 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The discovery of novel plasma-based biomarkers could lead to new approaches in the treatment of Parkinson's disease (PD). Here, we explore the role of plasma apolipoprotein A1 (ApoA1) as a risk marker for PD and evaluate the influence of APOA1 promoter variation on plasma ApoA1 levels. Plasma ApoA1 and the single-nucleotide polymorphism, rs670, were assayed in a discovery cohort (cohort 1) of 301 PD patients, 80 normal controls (NCs), and 165 subjects with other neurodegenerative diseases, as well as a cohort (cohort 2) of 158 PD patients from a second clinical site. Additionally, rs670 was genotyped in a third cohort of 1,494 PD and 925 NC subjects from both clinical sites. Compared to both normal and disease controls, PD patients have lower plasma ApoA1 (P < 0.001 for both comparisons). Moreover, in PD patients, plasma ApoA1 levels are correlated with genotype at the APOA1 promoter polymorphism, rs670. Specifically, lower plasma ApoA1 levels were found in rs670 major allele (G) homozygotes in both cohort 1 (P = 0.009) and in a replication cohort (cohort 2; n = 158 PD patients; P = 0.024). Finally, evaluating rs670 genotype frequencies in 1,930 PD cases versus 997 NCs, the rs670 GG genotype shows a trend toward association (odds ratio: 1.1; P = 0.10) with PD. Our results are compatible with a model whereby circulating ApoA1 levels may be useful in risk-stratifying subjects for the development of PD, with higher ApoA1 levels suggesting relative protection. Future studies evaluating modulation of ApoA1 as a novel therapeutic strategy in PD are warranted. © 2014 International Parkinson and Movement Disorder Society
    Movement Disorders 09/2014; · 5.63 Impact Factor
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    ABSTRACT: Cognitive impairment is a common and disabling problem in Parkinson disease (PD) that is not well understood and is difficult to treat. Identification of genetic variants that influence the rate of cognitive decline or pattern of early cognitive deficits in PD might provide a clearer understanding of the etiopathogenesis of this important nonmotor feature.
    JAMA Neurology 09/2014; · 7.58 Impact Factor
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    ABSTRACT: Parkinson's disease (PD) significantly impacts both patients' and spouses' emotional and physical health. However, despite the importance of social relationships for wellbeing, few studies have examined relationship quality and their correlates in individuals with PD and their partners. Specifically, no known studies have examined the association between benefit finding, or the experience of personal growth and other positive changes in the face of a stressor, and perceived marital quality. To address these gaps in the field, 25 married couples participated in a cross-sectional, pilot study. Patients were veterans diagnosed with idiopathic PD receiving care at the Philadelphia VA Medical Center. Each patient and spouse independently completed self-reported measures of sociodemographics, physical and mental wellbeing, caregiver burden, marital quality, and perceived benefits associated with having PD. Actor-partner interdependence models revealed that, after adjusting for covariates, greater perceived benefits from either having PD or living with a spouse with PD was associated with greater marital quality, both for that individual and their partner. Thus, perceiving positive consequences, such as personal growth, as a result of personally having PD or living with a spouse with PD is related to greater marital quality for both members of the marital dyad. Findings may inform individual and couples-based interventions that address the value of benefit finding and incorporate other techniques of positive reappraisal. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
    09/2014;
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    ABSTRACT: To evaluate the course and predictors of neuropsychiatric symptoms (NPS) and cognition in patients with de novo Parkinson disease (PD).
    Neurology 08/2014; · 8.25 Impact Factor
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    ABSTRACT: Impulse control disorders (ICDs) in Parkinson disease (PD) are common and can be difficult to manage. The objective of this study was to determine the efficacy and tolerability of naltrexone, an opioid antagonist, for the treatment of ICDs in PD.METHODS: Patients with PD (n = 50) and an ICD were enrolled in an 8-week, randomized (1:1), double-blind, placebo-controlled study of naltrexone 50-100 mg/d (flexible dosing). The primary outcome measure was response based on the Clinical Global Impression-Change score, and the secondary outcome measure was change in symptom severity using the Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease-Rating Scale (QUIP-RS) ICD score.RESULTS: Forty-five patients (90%) completed the study. The Clinical Global Impression-Change response rate difference favoring naltrexone in completers was 19.8% (95% confidence interval [CI] -8.7% to 44.2%). While this difference was not significant (odds ratio = 1.6, 95% CI 0.5-5.2, Wald χ(2) [df] = 0.5 [1], p = 0.5), naltrexone treatment led to a significantly greater decrease in QUIP-RS ICD score over time compared with placebo (regression coefficient for interaction term in linear mixed-effects model = -7.37, F[df] = 4.3 [1, 49], p = 0.04). The estimated changes in QUIP-RS ICD scores from baseline to week 8 were 14.9 points (95% CI 9.9-19.9) for naltrexone and 7.5 points (95% CI 2.5-12.6) for placebo.CONCLUSIONS: Naltrexone treatment was not efficacious for the treatment of ICDs in PD using a global assessment of response, but findings using a PD-specific ICD rating scale support further evaluation of opioid antagonists for the treatment of ICD symptoms in PD.CLASSIFICATION OF EVIDENCE: This study provides Class I evidence that in patients with PD and an ICD, naltrexone does not significantly increase the probability of achieving response. However, the study lacked the precision to exclude an important difference in response rates.
    Neurology 07/2014; · 8.25 Impact Factor
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    ABSTRACT: Cognitive impairment is a common occurrence in Parkinson's disease (PD), although the severity and specific presentation varies across patients. Initial deficits, including mild cognitive impairment (PD-MCI), may remain stable or in many cases, may progress over variable lengths of time to Parkinson's disease dementia (PDD). As there are currently no marketed treatments for milder forms of cognitive impairment, an opportunity exists to define the path for therapeutic development in this area. In the absence of a well-defined path for the approval of therapies that target PD-MCI, pharmaceutical companies are unlikely to pursue this indication. In order to move forward and improve the quality of life for PD patients, it is imperative for the field to have consensus on the definition of PD-MCI, the best instruments to measure cognitive decline, and a strategy for future clinical trials.
    Journal of Parkinson's disease. 07/2014;
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    ABSTRACT: Cognitive impairment, including dementia, is common in Parkinson's disease (PD). The Mini-Mental State Examination (MMSE) has been recommended as a screening tool for Parkinson's disease dementia (PDD), with values below 26 indicative of possible dementia. Using a detailed neuropsychological battery, we examined the range of cognitive impairment in PD patients with an MMSE score of 26 or higher. In this multicenter, cross-sectional, observational study, we performed neuropsychological testing in a sample of 788 PD patients with MMSE scores of 26 or higher. Evaluation included tests of global cognition, executive function, language, memory, and visuospatial skills. A consensus panel reviewed results for 342 subjects and assigned a diagnosis of no cognitive impairment, mild cognitive impairment, or dementia. Sixty-seven percent of the 788 subjects performed 1.5 standard deviations below the normative mean on at least one test. On eight of the 15 tests, more than 20% of subjects scored 1.5 standard deviations or more below the normative mean. Greatest impairments were found on Hopkins Verbal Learning and Digit Symbol Coding tests. The sensitivity of the MMSE to detect dementia was 45% in a subset of participants who underwent clinical diagnostic procedures. A remarkably wide range of cognitive impairment can be found in PD patients with a relatively high score on the MMSE, including a level of cognitive impairment consistent with dementia. Given these findings, clinicians must be aware of the limitations of the MMSE in detecting cognitive impairment, including dementia, in PD. © 2014 International Parkinson and Movement Disorder Society
    Movement Disorders 07/2014; · 5.63 Impact Factor
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    ABSTRACT: Our aim was to assess cortical thickness in a large multicenter cohort of drug-naive patients with early Parkinson disease (PD), with and without mild cognitive impairment (MCI), and explore the cognitive correlates of regional cortical thinning. One hundred twenty-three newly diagnosed patients with PD and 56 healthy controls with 3-tesla structural MRI scans and complete neuropsychological assessment from the Parkinson's Progression Markers Initiative were included. Modified Movement Disorders Society Task Force level II criteria were applied to diagnose MCI in PD. FreeSurfer image processing and analysis software was used to measure cortical thickness across groups and the association with cognitive domains and tests. In patients with MCI, atrophy was found in temporal, parietal, frontal, and occipital areas compared with controls. Specific regional thinning in the right inferior temporal cortex was also found in cognitively normal patients. Memory, executive, and visuospatial performance was associated with temporoparietal and superior frontal thinning, suggesting a relationship between cognitive impairment and both anterior and posterior cortical atrophy in the whole patient sample. These findings confirm that MCI is associated with widespread cortical atrophy. In addition, they suggest that regional cortical thinning is already present at the time of diagnosis in patients with early, untreated PD who do not meet the criteria for MCI. Together, the results indicate that cortical thinning can serve as a marker for initial cognitive decline in early PD.
    Neurology 05/2014; · 8.25 Impact Factor
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    ABSTRACT: Existing anxiety rating scales have limited construct validity in patients with Parkinson's disease (PD). This study was undertaken to develop and validate a new anxiety rating scale, the Parkinson Anxiety Scale (PAS), that would overcome the limitations of existing scales. The general structure of the PAS was based on the outcome of a Delphi procedure. Item selection was based on a canonical correlation analysis and a Rasch analysis of items of the Hamilton Anxiety Rating Scale (HARS) and the Beck Anxiety Inventory (BAI) from a previously published study. Validation was done in a cross-sectional international multicenter study involving 362 patients with idiopathic PD. Patients underwent a single screening session in which the PAS was administered, along with the Hamilton Depression Rating Scale, the HARS, and the BAI. The Mini International Neuropsychiatric Interview was administered to establish Diagnostic and Statistical Manual of Mental Disorders (DSM) diagnoses of anxiety and depressive disorders. The PAS is a 12-item observer or patient-rated scale with three subscales, for persistent, episodic anxiety and avoidance behavior. Properties for acceptability and reliability met predetermined criteria. The convergent and known groups validity was good. The scale has a satisfactory factorial structure. The area under the receiver operating characteristics curve and Youden index of the PAS are higher than that of existing anxiety rating scales. The PAS is a reliable and valid anxiety measure for use in PD patients. It is easy and brief to administer, and has better clinimetric properties than existing anxiety rating scales. The sensitivity to change of the PAS remains to be assessed. © 2014 International Parkinson and Movement Disorder Society
    Movement Disorders 05/2014; · 5.63 Impact Factor
  • David Burn, Daniel Weintraub, Trevor Robbins
    Movement Disorders 04/2014; 29(5):581-3. · 5.63 Impact Factor
  • David Burn, Daniel Weintraub, Bernard Ravina, Irene Litvan
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    ABSTRACT: Cognitive impairment and dementia associated with movement disorders represent a major management challenge and area of unmet need. This article has focused upon Parkinson's disease as an exemplar condition, but many of the roadblocks and efforts to overcome these are applicable, in a general sense, to other disorders. Short of a “penicillin moment”—a chance discovery or piece of unintended good fortune—progress is likely to be incremental. Cognitive therapies may end up being multiple and possibly multimodal, parallel with the cancer therapy field. Ultimately, benefit for one condition may extend to others as commonality in protein aggregation, synergistic pathological effects between proteins, and pathological spread emerges. © 2014 International Parkinson and Movement Disorder Society
    Movement Disorders 04/2014; 29(5). · 5.63 Impact Factor
  • Dag Aarsland, John-Paul Taylor, Daniel Weintraub
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    ABSTRACT: Neuropsychiatric symptoms (NPS) such as depression, hallucinations and apathy commonly occur in Parkinson's disease (PD) and have major clinical consequences including a negative impact on quality of life. This review discusses the epidemiology, clinical features, diagnostic procedures and treatment issues of NPS in PD and related disorders in the perspective of cognitive impairment, focusing on depression, anxiety, visual hallucinations, apathy, sleep disturbances, impulse control disorder and non-motor fluctuations. The majority of NPS are more common in PD patients with dementia, possibly related to shared underlying pathologies. Recent studies also suggest that NPS are associated with mild cognitive impairment in PD, in particular with the amnestic type. Accurate diagnosis of NPS is important but can be difficult, due to overlapping symptoms and similar appearance of symptoms of motor symptoms of parkinsonism, cognitive impairment, mood disorders and apathy. There are few systematic studies focusing on the management of NPS in PD with cognitive impairment. © 2014 International Parkinson and Movement Disorder Society.
    Movement Disorders 04/2014; 29(5):651-62. · 5.63 Impact Factor
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    ABSTRACT: Consensus diagnostic criteria for multiple system atrophy consider dementia as a nonsupporting feature, despite emerging evidence demonstrating that cognitive impairments are an integral part of the disease. Cognitive disturbances in multiple system atrophy occur across a wide spectrum from mild single domain deficits to impairments in multiple domains and even to frank dementia in some cases. Frontal-executive dysfunction is the most common presentation, while memory and visuospatial functions also may be impaired. Imaging and neuropathological findings support the concept that cognitive impairments in MSA originate from striatofrontal deafferentation, with additional contributions from intrinsic cortical degeneration and cerebellar pathology. Based on a comprehensive evidence-based review, the authors propose future avenues of research that ultimately may lead to diagnostic criteria for cognitive impairment and dementia associated with multiple system atrophy. © 2014 International Parkinson and Movement Disorder Society
    Movement Disorders 04/2014; · 5.63 Impact Factor
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    ABSTRACT: Impulsive-compulsive disorders are frequent in patients with Parkinson's disease (PD). Recently, a screening questionnaire and rating scale were developed for these disorders: the questionnaire for impulsive-compulsive disorders (QUIP) and QUIP-rating scale (QUIP-RS). We assessed the validity of these instruments in the German language in order to reevaluate the benefit and to obtain German screening tools in clinical practice. A convenience sample of 156 patients was assessed in Kiel and Vienna. The patients filled out the QUIP-current, the QUIP-anytime and the QUIP-RS. We validated the questionnaires against a gold standard diagnosis via receiver operating characteristic curves and determined optimal cut-off scores for the instruments. Excluding walkabout, which was not shown to be valid, sensitivities ranged from 60-92 % for the QUIP-current, 68-91 % for the QUIP-anytime, and 73-100 % for the QUIP-RS. Specificities were >71 % for QUIP-current, >69 % for QUIP-anytime and >62 % for QUIP-RS. With its very good sensitivities, the QUIP-RS is a valid instrument to assess impulsive-compulsive disorders and makes an early detection of behavioral disorders in PD possible. The QUIP-anytime was also shown to be a valid screening instrument. Both are expected to prove useful in scientific and clinical practice.
    Journal of Neurology 03/2014; · 3.58 Impact Factor
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    ABSTRACT: Agitation is common, persistent, and associated with adverse consequences for patients with Alzheimer disease. Pharmacological treatment options, including antipsychotics are not satisfactory. The primary objective was to evaluate the efficacy of citalopram for agitation in patients with Alzheimer disease. Key secondary objectives examined effects of citalopram on function, caregiver distress, safety, cognitive safety, and tolerability. The Citalopram for Agitation in Alzheimer Disease Study (CitAD) was a randomized, placebo-controlled, double-blind, parallel group trial that enrolled 186 patients with probable Alzheimer disease and clinically significant agitation from 8 academic centers in the United States and Canada from August 2009 to January 2013. Participants (n = 186) were randomized to receive a psychosocial intervention plus either citalopram (n = 94) or placebo (n = 92) for 9 weeks. Dosage began at 10 mg per day with planned titration to 30 mg per day over 3 weeks based on response and tolerability. Primary outcome measures were based on scores from the 18-point Neurobehavioral Rating Scale agitation subscale (NBRS-A) and the modified Alzheimer Disease Cooperative Study-Clinical Global Impression of Change (mADCS-CGIC). Other outcomes were based on scores from the Cohen-Mansfield Agitation Inventory (CMAI) and the Neuropsychiatric Inventory (NPI), ability to complete activities of daily living (ADLs), caregiver distress, cognitive safety (based on scores from the 30-point Mini Mental State Examination [MMSE]), and adverse events. Participants who received citalopram showed significant improvement compared with those who received placebo on both primary outcome measures. The NBRS-A estimated treatment difference at week 9 (citalopram minus placebo) was -0.93 (95% CI, -1.80 to -0.06), P = .04. Results from the mADCS-CGIC showed 40% of citalopram participants having moderate or marked improvement from baseline compared with 26% of placebo recipients, with estimated treatment effect (odds ratio [OR] of being at or better than a given CGIC category) of 2.13 (95% CI, 1.23-3.69), P = .01. Participants who received citalopram showed significant improvement on the CMAI, total NPI, and caregiver distress scores but not on the NPI agitation subscale, ADLs, or in less use of rescue lorazepam. Worsening of cognition (-1.05 points; 95% CI, -1.97 to -0.13; P = .03) and QT interval prolongation (18.1 ms; 95% CI, 6.1-30.1; P = .01) were seen in the citalopram group. Among patients with probable Alzheimer disease and agitation who were receiving psychosocial intervention, the addition of citalopram compared with placebo significantly reduced agitation and caregiver distress; however, cognitive and cardiac adverse effects of citalopram may limit its practical application at the dosage of 30 mg per day. clinicaltrials.gov Identifier: NCT00898807.
    JAMA The Journal of the American Medical Association 02/2014; 311(7):682-91. · 29.98 Impact Factor
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    ABSTRACT: A Food and Drug Administration (FDA) safety communication in August 2011 warned that citalopram was associated with a dose dependent risk of QT prolongation and recommended dose restriction in patients over the age of 60 but did not provide data for this age group.
    PLoS ONE 01/2014; 9(6):e98426. · 3.53 Impact Factor
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    ABSTRACT: Objective We wanted to assess if sertraline treatment (versus placebo) or remission of depression at 12 weeks (versus nonremission) in Alzheimer patients is associated with improved caregiver well being. Methods We conducted a randomized, double-blind, placebo-controlled clinical trial of the efficacy and safety of sertraline for the treatment of depression in individuals with Alzheimer disease in five clinical research sites across the United States. Participants were caregivers of patients enrolled in the Depression in Alzheimer's Disease Study 2 (N = 131). All caregivers received standardized psychosocial support throughout the study. Caregiver outcome measures included depression (Beck Depression Inventory), distress (Neuropsychiatric Inventory), burden (Zarit Burden Interview), and quality of life (Medical Outcomes Study Short Form Health Survey). Results Fifty-nine percent of caregivers were spouses, 63.4% were women, and 64.1% were white. Caregivers of patients in both treatment groups had significant reductions in distress scores over the 24-week study period, but there was not a greater benefit for caregivers of patients taking sertraline. However, caregivers of patients whose depression was in remission at week 12 had greater declines in distress scores over the 24 weeks than caregivers of patients whose depression did not remit by week 12. Conclusion Patient treatment with sertraline was not associated with significantly greater reductions in caregiver distress than placebo treatment. Distress but not level of depression or burden lessened for all caregivers regardless of remission status and even more so for those who cared for patients whose depression remitted. Results imply an interrelationship between caregiver distress and patient psychiatric outcomes.
    The American journal of geriatric psychiatry: official journal of the American Association for Geriatric Psychiatry 01/2014; 22(1):14–24. · 3.35 Impact Factor
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    ABSTRACT: Dementia in Parkinson's disease (PD) is a serious health issue and a major concern for many patients. In most cases mild cognitive impairment (MCI) is considered a transitional stage between normal cognitive functioning and dementia which is of potential importance in the early identification of patients at risk for dementia. Recently, the Movement Disorder Society (MDS) proposed diagnostic criteria for MCI in PD (PD-MCI). These criteria comprise two operationalizations: Level I (based on an abbreviated assessment) and Level II (based on comprehensive neuropsychological evaluation permitting MCI subtyping). These criteria need to be validated. This paper describes a project aiming to validate the MDS PD-MCI criteria by pooling and analyzing cross-sectional and longitudinal neuropsychological databases comprising ≥5,500 PD patients and ≥1,700 controls. After applying the MDS PD-MCI Level I and Level II criteria, rates of conversion to PD-dementia and predictive variables for conversion to PD-dementia will be established. This study will also assist in identifying whether revisions of the PD-MCI criteria are required.
    Journal of Parkinson's disease. 12/2013;
  • Michael S Okun, Daniel Weintraub
    Movement Disorders 11/2013; · 5.63 Impact Factor
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    ABSTRACT: Anxiety symptoms are common in Parkinson disease (PD). Recent evidence suggests that anxiety syndromes as encountered in clinical practice may not correspond to the DSM-IV classification of anxiety disorders. To examine the syndromal pattern of the anxiety spectrum in a large series of patients with PD, as determined with a data-driven approach using latent class analysis (LCA). 342 patients with PD were recruited from referrals to movement disorders or psychiatry clinics at six tertiary centers. Participants were assessed with a structured psychiatric interview and specific scales rating the severity of anxiety, depression, cognition and parkinsonism. The main outcome measure was classes of patients with a specific syndromal profile of anxiety symptoms based on LCA. LCA identified four classes that were interpreted as "no anxiety or depression", "episodic anxiety without depression", "persistent anxiety with depression", and "both persistent and episodic anxiety with depression". Symptoms of persistent anxiety were almost invariably associated with symptoms of depression. There were significant differences between classes in terms of history of depression and anxiety, use of psychoactive medication, and on the Mentation and Complications sections of the Unified Parkinson Disease Rating Scale. Patients with PD show different syndromic profiles of anxiety that do not align with the symptom profiles represented by DSM-IV anxiety disorders and major depression. Accordingly, DSM-IV criteria for anxiety disorders may not be clinically useful in PD. The different classes identified here provide empirically validated phenotypes for future research.
    The American journal of geriatric psychiatry: official journal of the American Association for Geriatric Psychiatry 11/2013; · 3.35 Impact Factor

Publication Stats

4k Citations
706.34 Total Impact Points

Institutions

  • 2014
    • Medical University of South Carolina
      Charleston, South Carolina, United States
    • University Hospital Donostia
      San Sebastián, Basque Country, Spain
  • 2003–2014
    • University of Pennsylvania
      • • Perelman School of Medicine
      • • Department of Psychiatry
      • • Geriatric Psychiatry Section
      Philadelphia, Pennsylvania, United States
  • 2013
    • University of Florida
      Gainesville, Florida, United States
  • 2012
    • University of Washington Seattle
      • Department of Psychiatry and Behavioral Sciences
      Seattle, WA, United States
    • Johns Hopkins Medicine
      • Department of Psychiatry and Behavioral Sciences
      Baltimore, Maryland, United States
  • 2011–2012
    • Johns Hopkins Bloomberg School of Public Health
      • Department of Epidemiology
      Baltimore, MD, United States
    • University of Louisville
      • Department of Neurology
      Louisville, KY, United States
    • Centre Hospitalier Sainte Anne
      Lutetia Parisorum, Île-de-France, France
  • 2005–2012
    • Hospital of the University of Pennsylvania
      • • Department of Neurology
      • • Division of Geriatrics
      • • Department of Psychiatry
      Philadelphia, Pennsylvania, United States
    • Alpert Medical School - Brown University
      • Department of Neurology
      Providence, Rhode Island, United States
  • 2010–2011
    • University of Naples Federico II
      Napoli, Campania, Italy
    • Université René Descartes - Paris 5
      • Centre de Psychiatrie et Neurosciences (UMR_S 894)
      Paris, Ile-de-France, France
  • 2008–2010
    • Johns Hopkins University
      • Department of Psychiatry and Behavioral Sciences
      Baltimore, MD, United States
    • Yale University
      • Department of Psychiatry
      New Haven, CT, United States
  • 2009
    • University of Rochester
      • Department of Neurology
      Rochester, NY, United States
    • Northwestern University
      • Parkinson's Disease and Movement Disorders Center
      Evanston, IL, United States
  • 2007
    • University College London
      • Department of Clinical Neuroscience
      London, ENG, United Kingdom
  • 2004
    • Drexel University
      Philadelphia, Pennsylvania, United States