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Updated: May 2, 2026

Rating L-DOPA-Induced Dyskinesias in the Unilaterally 6-OHDA-Lesioned Rat Model of Parkinson's Disease
Published on: October 4, 2021
[ApoE polymorphisms and dopaminergic replacement therapy in Parkinson's disease]
Amin Cervantes-Arriaga1, Mayela Rodríguez-Violante, Paulina González-Latapí
1Laboratorio Clínico de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, Secretaría de Salud, Distrito Federal, México. mrodriguez@innn.edu.mx.
Background:
The expression of apolipoprotein E (apoE) polymorphisms has been proposed as a risk factor for early development of psychotic symptoms in patients with Parkinson's disease. The association between apoE polymorphisms and motor complications is controversial. The aim was to determine the association between apoE polymorphisms and its allele frequency with the development of complications secondary to dopaminergic replacement therapy.
Methods:
We evaluated 231 patients with the diagnosis of Parkinson's disease. The presence of motor complications secondary to treatment was determined by a neurologist, and the genotypification of apoE polymorphisms was performed. Descriptive statistics and chi-squared test were used.
Results:
Genotype ?3/?3 was expressed in 80.5 % of the sample; there was no association between genotype or allele frequency of apoE polymorphisms and the development of psychosis or dyskinesia. Patients who expressed the ?2 allele showed a tendency to develop motor fluctuations, but without reaching statistical significance (p = 0.08).
Conclusions:
ApoE polymorphisms are not associated with the development of complications from dopaminergic replacement therapy.
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