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V. Tumas · SciRah

Researcher profile · Semantic Scholar

V. Tumas

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V. Tumas — researcher profile on SciRah

h-index: 31
Works: 154
Citations: 3,743

Most-cited papers

Quantifying brain iron deposition in patients with Parkinson's disease using quantitative susceptibility mapping, R2 and R2.
J. H. O. Barbosa, Antônio Carlos Santos, V. Tumas, Manju Liu +3 more
2015Magnetic Resonance Imaging273 citations
Semantic Scholar
Effects of acute cannabidiol administration on anxiety and tremors induced by a Simulated Public Speaking Test in patients with Parkinson’s disease
Stephanie Martins de Faria, Daiene de Morais Fabrício, V. Tumas, P. C. Castro +5 more
2020Journal of Psychopharmacology109 citations
Semantic Scholar
Characterizing the Genetic Architecture of Parkinson’s Disease in Latinos
D. Loesch, A. Horimoto, K. Heilbron, E. Sarihan +33 more
2020medRxiv104 citations Open access
Semantic Scholar
High Frequency of Sleep Disorders in Parkinson’s Disease and Its Relationship with Quality of Life
M. Sobreira-Neto, M. PENA-PEREIRA, E. Sobreira, M. H. Chagas +3 more
2017European Neurology76 citations
Semantic Scholar
Cannabidiol for Rapid Eye Movement Sleep Behavior Disorder
C. M. O. Almeida, M. M. Brito, N. B. Bosaipo, Â. V. Pimentel +5 more
2021Movement Disorders62 citations
Semantic Scholar
Is cannabidiol the ideal drug to treat non-motor Parkinson’s disease symptoms?
J. Crippa, J. Hallak, A. Zuardi, F. Guimarães +2 more
2019European Archives of Psychiatry and Clinical Neuroscience62 citations
Semantic Scholar
The Prevalence and Correlation of Non-motor Symptoms in Adult Patients with Idiopathic Focal or Segmental Dystonia
N. Novaretti, A. L. N. Cunha, T. C. Bezerra, Marcio Alexandre Pena Pereira +6 more
2019Tremor and Other Hyperkinetic Movements59 citations Open access
Semantic Scholar
Rating scales for behavioral symptoms in Huntington's disease: Critique and recommendations
T. Mestre, E. van Duijn, Aileen M. Davis, A. Bachoud-Lévi +10 more
2016Movement Disorders54 citations Open access
Semantic Scholar
Recent advances in LC-MS/MS methods to determine endocannabinoids in biological samples: Application in neurodegenerative diseases.
C. Marchioni, I. D. de Souza, Vinicius R. Acquaro, J. A. de Souza Crippa +2 more
2018Analytica Chimica Acta52 citations Open access
Semantic Scholar
Embracing Monogenic Parkinson's Disease: The MJFF Global Genetic PD Cohort
Eva-Juliane Vollstedt, S. Schaake, K. Lohmann, S. Padmanabhan +130 more
2023Movement Disorders44 citations Open access
Semantic Scholar
A column switching ultrahigh-performance liquid chromatography-tandem mass spectrometry method to determine anandamide and 2-arachidonoylglycerol in plasma samples
C. Marchioni, I. D. de Souza, C. Grecco, J. Crippa +2 more
2017Analytical and Bioanalytical Chemistry37 citations
Semantic Scholar
Screening of cognitive impairment in patients with Parkinson's disease: diagnostic validity of the Brazilian versions of the Montreal Cognitive Assessment and the Addenbrooke's Cognitive Examination-Revised.
E. Sobreira, M. PENA-PEREIRA, Á. Éckeli, M. Sobreira-Neto +6 more
2015Arquivos de Neuro-Psiquiatria36 citations Open access
Semantic Scholar
Variable frequency of LRRK2 variants in the Latin American research consortium on the genetics of Parkinson’s disease (LARGE-PD), a case of ancestry
M. Cornejo-Olivas, L. Torres, M. R. Velit-Salazar, M. Inca-Martinez +20 more
2017npj Parkinson's Disease34 citations Open access
Semantic Scholar
Recalling feature bindings differentiates Alzheimer’s disease from frontotemporal dementia
M. A. Cecchini, M. Yassuda, V. Bahia, L. D. de Souza +11 more
2017Journal of Neurology33 citations Open access
Semantic Scholar
Neuroimaging of major depression in Parkinson's disease: Cortical thickness, cortical and subcortical volume, and spectroscopy findings.
M. H. Chagas, V. Tumas, M. PENA-PEREIRA, J. P. Machado-de-Sousa +4 more
2017Journal of Psychiatric Research33 citations Open access
Semantic Scholar
Mutational screening of 320 Brazilian patients with autosomal dominant spinocerebellar ataxia.
V. Cintra, C. Lourenço, S. Marques, L. M. de Oliveira +2 more
2014Journal of Neurological Sciences32 citations
Semantic Scholar
Some aspects of the validity of the Montreal Cognitive Assessment (MoCA) for evaluating cognitive impairment in Brazilian patients with Parkinson's disease
V. Tumas, V. Borges, Henrique Ballalai-Ferraz, C. Zabetian +5 more
2016Dementia & Neuropsychologia28 citations Open access
Semantic Scholar
Huntington's disease-like disorders in Latin America and the Caribbean.
R. H. Walker, Emilia M. Gatto, M. L. Bustamante, O. Bernal-Pacheco +14 more
2018Parkinsonism & Related Disorders27 citations Open access
Semantic Scholar
Validation of the Brazilian Portuguese version of the Rapid Eye Movement Sleep Behavior Disorder Screening Questionnaire (RBDSQ-BR)
M. PENA-PEREIRA, M. Sobreira-Neto, E. Sobreira, M. H. Chagas +6 more
2020Arquivos de Neuro-Psiquiatria26 citations Open access
Semantic Scholar
Vocal Parameters and Self-Perception in Individuals With Adductor Spasmodic Dysphonia.
G. V. E. Rojas, H. Ricz, V. Tumas, G. Rodrigues +2 more
2017Journal of Voice25 citations
Semantic Scholar
[Cannabinoids in neurology--Brazilian Academy of Neurology].
S. Brucki, N. A. Frota, P. Schestatsky, A. H. Souza +9 more
2015Arquivos de Neuro-Psiquiatria24 citations Open access
Semantic Scholar
Genome-Wide Analysis of Copy Number Variation in Latin American Parkinson’s Disease Patients
E. Sarihan, E. Pérez-Palma, Lisa-Marie Niestroj, D. Loesch +32 more
2020medRxiv23 citations Open access
Semantic Scholar
Obstructive sleep apnea and Parkinson's disease: characteristics and associated factors.
M. Sobreira-Neto, M. PENA-PEREIRA, E. Sobreira, M. H. Chagas +4 more
2019Arquivos de Neuro-Psiquiatria22 citations Open access
Semantic Scholar
Intermediate-length CAG repeat in ATXN2 is associated with increased risk for amyotrophic lateral sclerosis in Brazilian patients.
Helen Maia Tavares de Andrade, V. Cintra, M. de Albuquerque, C. Piccinin +15 more
2018Neurobiology of Aging20 citations Open access
Semantic Scholar
Is Ataxia an Underestimated Symptom of Huntington's Disease?
G. Franklin, C. H. Camargo, A. Meira, G. M. Pavanelli +19 more
2020Frontiers in Neurology19 citations Open access
Semantic Scholar
Endocannabinoid levels in patients with Parkinson’s disease with and without levodopa-induced dyskinesias
C. Marchioni, B. Santos-Lobato, M. E. Queiroz, J. Crippa +1 more
2020Journal of neural transmission19 citations Open access
Semantic Scholar
Global cognitive performance is associated with sleep efficiency measured by polysomnography in patients with Parkinson's disease
E. Sobreira, M. Sobreira-Neto, M. PENA-PEREIRA, M. H. Chagas +3 more
2019Psychiatry and Clinical Neurosciences19 citations Open access
Semantic Scholar
Nanomedicine to Overcome Current Parkinson’s Treatment Liabilities: A Systematic Review
G. H. Hawthorne, M. P. Bernuci, M. Bortolanza, V. Tumas +2 more
2016Neurotoxicity research19 citations
Semantic Scholar
X-Chromosome Association Study in Latin American Cohorts Identifies New Loci in Parkinson’s Disease
T. P. Leal, Shilpa C. Rao, Jennifer N French-Kwawu, M. Gouveia +44 more
2023Movement Disorders18 citations Open access
Semantic Scholar
Levodopa-induced dyskinesias in Parkinson’s disease increase cerebrospinal fluid nitric oxide metabolites’ levels
B. Santos-Lobato, M. Bortolanza, Lucas C. Pinheiro, M. Batalhão +4 more
2021Journal of neural transmission18 citations Open access
Semantic Scholar
Metabolic Profile in Plasma AND CSF of LEVODOPA-induced Dyskinesia in Parkinson’s Disease: Focus on Neuroinflammation
B. Santos-Lobato, L. Gardinassi, M. Bortolanza, A. Peti +4 more
2021Molecular Neurobiology18 citations Open access
Semantic Scholar
Pharmacological treatment for REM sleep behavior disorder in Parkinson disease and related conditions: A scoping review.
C. M. D. de Almeida, D. Pachito, M. Sobreira-Neto, V. Tumas +1 more
2018Journal of Neurological Sciences17 citations
Semantic Scholar
An analysis of the cognitive items of the movement disorders society checklist for the diagnosis of dementia in patients with Parkinson's disease.
G. N. Oliveira, C. P. Souza, M. P. Foss, V. Tumas
2015Parkinsonism & Related Disorders17 citations
Semantic Scholar
Nitric oxide, a new player in L-DOPA-induced dyskinesia?
E. Del-Bel, F. E. Padovan-Neto, M. Bortolanza, V. Tumas +3 more
2015Frontiers in Bioscience17 citations Open access
Semantic Scholar
Direct coupling of fiber-in-tube solid-phase microextraction with tandem mass spectrometry to determine amyloid beta peptides as biomarkers for Alzheimer's disease in cerebrospinal fluid samples.
Israel D. Souza, Jared L. Anderson, V. Tumas, M. E. Queiroz
2022Talanta: The International Journal of Pure and Applied Analytical Chemistry16 citations Open access
Semantic Scholar
Diagnostic prediction model for levodopa-induced dyskinesia in Parkinson’s disease
B. Santos-Lobato, A. Schumacher-Schuh, C. Rieder, M. Hutz +5 more
2019Arquivos de Neuro-Psiquiatria16 citations Open access
Semantic Scholar
The frequency of the C9orf72 expansion in a Brazilian population.
V. Cintra, L. Bonadia, Helen Andrade, M. de Albuquerque +12 more
2018Neurobiology of Aging16 citations Open access
Semantic Scholar
The Effect of Cannabidiol for Restless Legs Syndrome/Willis-Ekbom Disease in Parkinson's Disease Patients with REM Sleep Behavior Disorder: A Post Hoc Exploratory Analysis of Phase 2/3 Clinical Trial
C. M. D. de Almeida, M. M. Brito, N. B. Bosaipo, Â. V. Pimentel +6 more
2022Cannabis and Cannabinoid Research15 citations
Semantic Scholar
Chronic Insomnia in Patients With Parkinson Disease: Which Associated Factors Are Relevant?
M. Sobreira-Neto, M. PENA-PEREIRA, E. Sobreira, M. H. Chagas +4 more
2020Journal of Geriatric Psychiatry and Neurology14 citations Open access
Semantic Scholar
Comparison Between Dysport and Prosigne in the Treatment of Cervical Dystonia
P. Barbosa, G. Rodrigues, Daniel Sabino de Oliveira, Carolina Pinto de Souza +1 more
2015Clinical neuropharmacology14 citations
Semantic Scholar
I'm looking through you: Mentalizing in frontotemporal dementia and progressive supranuclear palsy.
L. D. de Souza, M. Bertoux, Ratko Radakovic, M. Hornberger +10 more
2022Cortex; a journal devoted to the study of the nervous system and behavior13 citations Open access
Semantic Scholar
Repurposing an established drug: an emerging role for methylene blue in L‐DOPA‐induced dyskinesia
Keila D. Bariotto-dos-Santos, F. E. Padovan-Neto, M. Bortolanza, Maurício dos-Santos-Pereira +3 more
2018European Journal of Neuroscience13 citations
Semantic Scholar
Huntington's Disease like 2 presenting with isolated Parkinsonism.
L. Vasconcellos, Philippe Joaquim Oliveira Menezes Macêdo, J. B. Franck, V. Tumas +2 more
2017Journal of Neurological Sciences13 citations
Semantic Scholar
Excessive fragmentary myoclonus in patients with Parkinson’s disease: prevalence and clinico-polysomnographic profile
M. Sobreira-Neto, M. PENA-PEREIRA, E. Sobreira, M. H. Chagas +3 more
2015Sleep and Breathing13 citations
Semantic Scholar
Structural and functional differences in the brains of patients with MCI with and without depressive symptoms and their relations with Alzheimer's disease: an MRI study
R. Chiari-Correia, V. Tumas, Antônio Carlos Santos, C. E. G. Salmon
2023Psychoradiology12 citations Open access
Semantic Scholar
Is restless legs syndrome in Parkinson disease patients associated with any specific factor?
M. Sobreira-Neto, M. PENA-PEREIRA, E. Sobreira, M. H. Chagas +4 more
2020Arquivos de Neuro-Psiquiatria12 citations Open access
Semantic Scholar
History of high household pesticide use and Parkinson's disease in Brazil.
D. D. Moura, V. Borges, H. Ferraz, A. Schuh +5 more
2023Parkinsonism & Related Disorders11 citations
Semantic Scholar
Polygenic risk prediction and SNCA haplotype analysis in a Latino Parkinson’s disease cohort
D. Loesch, A. Horimoto, E. Sarihan, M. Inca-Martinez +31 more
2021medRxiv11 citations Open access
Semantic Scholar
A single oral dose of cannabidiol did not reduce upper limb tremor in patients with essential tremor.
Stela Santos de Alencar, J. Crippa, M. M. Brito, Â. V. Pimentel +2 more
2021Parkinsonism & Related Disorders10 citations
Semantic Scholar
Tracing the Distribution of European Lactase Persistence Genotypes Along the Americas
Ana Cecília Guimarães Alves, N. Sukow, Gabriel Adelman Cipolla, Marla Mendes +37 more
2021Frontiers in Genetics10 citations Open access
Semantic Scholar

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Á. Éckeli×11
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