Functional monoamine oxidase B gene intron 13 polymorphism predicts putaminal dopamine turnover in de novo Parkinson's disease.
Mov Disord
; 33(9): 1496-1501, 2018 09.
Article
em En
| MEDLINE
| ID: mdl-30216543
ABSTRACT
OBJECTIVE:
The objective of this study was to evaluate the effects of common functional polymorphisms in genes involved in dopamine metabolism on striatal dopamine turnover in de novo Parkinson's disease (PD).METHODS:
This was an observer-blinded cohort study investigating effects of common functional polymorphisms in dopa decarboxylase (DDC, rs921451), monoamine oxidase B (MAOB; rs1799836), catechol-O-methyltransferase (COMT, rs4680), and dopamine transporter/solute carrier family 6 member 3 (DAT/SLC6A3, variable number tandem repeats) genes on 18 F-fluorodopa uptake and an effective distribution volume ratio (inverse of dopamine turnover) measured by 18 F-fluorodopa PET in 28 untreated PD patients.RESULTS:
Patients carrying the MAOBCC/(C)/CT genotype (low/intermediate enzyme activity) had a lower dopamine turnover in the putamen (higher mean effective distribution volume ratio) when compared with patients with MAOBTT/(T) genotype (high enzyme activity). Striatal PET measures were not different between variants in the remaining genes.CONCLUSIONS:
The MAOB (rs1799836) polymorphism predicts putaminal dopamine turnover in early PD with the MAOBTT allele linked to high enzyme activity leading to higher intrinsic dopamine turnover, which has been demonstrated to constitute a risk factor for motor complications. © 2018 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doença de Parkinson
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Polimorfismo Genético
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Putamen
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Dopamina
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Monoaminoxidase
Tipo de estudo:
Clinical_trials
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Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Mov Disord
Assunto da revista:
NEUROLOGIA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Alemanha