Related Experiment Video
Updated: Jun 22, 2025

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease
Published on: October 14, 2021
DRD4 gene polymorphism and impulse control disorder induced by dopamine agonists in Parkinson's disease
Viviana Torres1, Jesica Pérez-Montesino2, Rubén Fernández-Santiago2
1Parkinson's Disease and Movement Disorders Unit, Neurology Service, Institut de Neurociencies UBNeuro, Hospital Clínic Universitari de Barcelona, Barcelona, Catalonia, Spain.
Abstract:
Impulse control disorders and their consequences display variability among individuals, indicating potential involvement of environmental and genetic factors. In this retrospective study, we analyzed a cohort of Parkinson's disease patients treated with dopamine agonists and investigated the influence of the dopamine D4 receptor gene polymorphism, DRD4 7R+, which is linked to psychiatric disorders, impulsive traits, and addictive behaviors. We found that DRD4 7R+ is a significant genetic risk factor associated with the severity of ICD.
Related Concept Videos
Parkinson's Disease: Treatment
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
Parkinson's Disease: Overview
Drugs Affecting Neurotransmitter Synthesis
Human Genetics
The complex relationship between genetics and psychology is observable through common biological components such...
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Neural Regulation

