Inflammation in dementia with Lewy bodies

Area of Science:

• Neuroscience
• Immunology
• Pathology

Background:

• Dementia with Lewy bodies (DLB) is the second most common neurodegenerative dementia after Alzheimer's disease (AD).
• While inflammation in AD is well-studied, its role in DLB pathogenesis is less understood.
• Existing research often focuses on related disorders like Parkinson's disease.

Purpose of the Study:

• To review and synthesize current literature on the role of neuroinflammation in Dementia with Lewy bodies.
• To explore various methodologies used to study inflammation in DLB.
• To identify potential diagnostic markers and therapeutic targets related to inflammation in DLB.

Main Methods:

• Literature review encompassing cerebrospinal fluid, peripheral blood, post-mortem brain tissue analysis, neuroimaging (PET), and preclinical studies.
• Quantification of inflammatory markers across different disease stages.
• Examination of the influence of alpha-synuclein and AD co-pathology on neuroinflammation.

Main Results:

• Evidence suggests increased cerebral and peripheral inflammation in mild/prodromal DLB, which diminishes with disease progression.
• Alpha-synuclein appears to directly promote inflammation.
• Alzheimer's disease co-pathology significantly influences the neuroinflammatory profile in DLB.

Conclusions:

• Inflammation may serve as a sentinel marker in early DLB, especially with co-existing AD pathology.
• Further longitudinal studies are crucial for understanding DLB pathogenesis.
• Identifying inflammatory profiles could lead to diagnostic biomarkers and novel therapeutic strategies for DLB.