Impulse Control Disorders in Parkinson's Disease: From Bench to Bedside

Area of Science:

• Neuroscience
• Neurology
• Pharmacology

Background:

• Parkinson's disease (PD) presents with motor and non-motor symptoms, including impulse control disorders (ICDs).
• ICDs in PD are characterized by disabling impulsive and compulsive behaviors.
• These behaviors arise from a combination of dopamine agonist therapy and intrinsic PD-related neurobiological changes.

Purpose of the Study:

• To review recent advances in understanding the molecular and neuroanatomical mechanisms of ICDs in PD.
• To summarize clinical and preclinical findings, emphasizing rodent models.
• To discuss the relevance of PD + ICD research to other neuropsychiatric disorders.

Main Methods:

• Literature review of clinical and preclinical studies.
• Focus on molecular and neuroanatomical mechanisms.
• Special emphasis on rodent models of PD + ICD.

Main Results:

• Recent studies reveal complex molecular and circuit-level alterations underlying PD + ICD.
• Rodent models provide valuable insights into the neurochemical basis of these disorders.
• Understanding these mechanisms is crucial for developing effective treatments.

Conclusions:

• There is a lack of consensus on treating ICDs in PD, highlighting the need for further research.
• Advances in understanding neurobiological mechanisms offer potential therapeutic targets.
• Findings contribute to a broader understanding of impulsive and compulsive behaviors in neuropsychiatric conditions.