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Coutinho AM, Ghilardi MG, Campos ACP, Etchebehere E, Fonoff FC, Cury RG, Pagano RL, Martinez RCR, Fonoff ET. Does TRODAT-1 SPECT Uptake Correlate with Cerebrospinal Fluid α-Synuclein Levels in Mid-Stage Parkinson's Disease? Biomedicines 2023; 11:biomedicines11020296. [PMID: 36830833 PMCID: PMC9952987 DOI: 10.3390/biomedicines11020296] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is characterized by a progressive loss of nigrostriatal dopaminergic neurons with impaired motor and non-motor symptoms. It has been suggested that motor asymmetry could be caused due to an imbalance in dopamine levels, as visualized by dopamine transporter single emission computed tomography test (DAT-SPECT), which might be related to indirect measures of neurodegeneration, evaluated by the Montreal Cognitive Assessment (MOCA) and α-synuclein levels in the cerebrospinal fluid (CSF). Therefore, this study aimed to understand the correlation between disease laterality, DAT-SPECT, cognition, and α-synuclein levels in PD. METHODS A total of 28 patients in the moderate-advanced stage of PD were subjected to neurological evaluation, TRODAT-1-SPECT/CT imaging, MOCA, and quantification of the levels of α-synuclein. RESULTS We found that α-synuclein in the CSF was correlated with global cognition (positive correlation, r2 = 0.3, p = 0.05) and DAT-SPECT concentration in the putamen (positive correlation, r2 = 0.4, p = 0.005), and striatum (positive correlation, r2 = 0.2, p = 0.03), thus working as a neurodegenerative biomarker. No other correlations were found between DAT-SPECT, CSF α-synuclein, and cognition, thus suggesting that they may be lost with disease progression. CONCLUSIONS Our data highlight the importance of understanding the dysfunction of the dopaminergic system in the basal ganglia and its complex interactions in modulating cognition.
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Affiliation(s)
- Artur M. Coutinho
- Division of Neuroscience, Hospital Sírio-Libanês, Sao Paulo 01308-060, SP, Brazil
- Laboratory of Nuclear Medicine (LIM 43), Department of Radiology and Oncology, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-010, SP, Brazil
- Division of Nuclear Medicine and PET/CT, Hospital Sírio-Libanês, Sao Paulo 01308-050, SP, Brazil
| | - Maria Gabriela Ghilardi
- Department of Neurology, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-010, SP, Brazil
| | | | - Elba Etchebehere
- Division of Nuclear Medicine, University of Campinas (UNICAMP), Campinas 13083-888, SP, Brazil
| | - Fernanda C. Fonoff
- Department of Neurology, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-010, SP, Brazil
| | - Rubens G. Cury
- Department of Neurology, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-010, SP, Brazil
| | - Rosana L. Pagano
- Division of Neuroscience, Hospital Sírio-Libanês, Sao Paulo 01308-060, SP, Brazil
| | - Raquel C. R. Martinez
- Division of Neuroscience, Hospital Sírio-Libanês, Sao Paulo 01308-060, SP, Brazil
- LIM/23—Institute of Psychiatry, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-903, SP, Brazil
- Correspondence:
| | - Erich T. Fonoff
- Division of Neuroscience, Hospital Sírio-Libanês, Sao Paulo 01308-060, SP, Brazil
- Department of Neurology, Faculdade de Medicina (FMUSP), Universidade de Sao Paulo, Sao Paulo 05403-010, SP, Brazil
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