Sleep and neurodegenerative diseases.

Area of Science:

• Neurology
• Sleep Medicine
• Neuroscience

Background:

• Sleep disturbances are a common and debilitating symptom in neurodegenerative diseases.
• These disruptions manifest as insomnia, hypersomnia, parasomnias, and circadian rhythm disorders, significantly affecting patient quality of life.
• Pathogenesis involves direct neuronal damage or indirect mechanisms, often linked to specific proteinopathies like tauopathies and alpha-synucleinopathies.

Purpose of the Study:

• To review the clinical profiles, pathogenetic mechanisms, diagnostic approaches, and management strategies for sleep disturbances in common neurodegenerative diseases.
• To highlight the importance of polysomnography (PSG) and multiple sleep latency testing in diagnosis.
• To provide a comprehensive overview for clinicians managing these complex sleep-related issues.

Main Methods:

• Literature review focusing on sleep disturbances in neurodegenerative conditions.
• Analysis of pathogenetic mechanisms, including biochemical classifications (tauopathies, alpha-synucleinopathies).
• Evaluation of diagnostic tools such as overnight polysomnography (PSG) and multiple sleep latency test.

Main Results:

• Sleep disturbances are diverse, including insomnia, hypersomnia, parasomnias, and circadian rhythm disruptions.
• Mechanisms involve direct neuronal injury and indirect pathways related to disease-specific protein aggregates.
• PSG and MSLT are crucial for accurate diagnosis of sleep disorders in this population.

Conclusions:

• Effective management of sleep disturbances in neurodegenerative diseases requires a nuanced approach based on specific symptoms and underlying pathology.
• Understanding the pathogenetic mechanisms is key to developing targeted therapeutic interventions.
• Further research is needed to optimize sleep management and improve patient outcomes in neurodegenerative diseases.