Association between Red Blood Cells Omega-3 Polyunsaturated Fatty Acids and White Matter Hyperintensities: The MAPT...

Area of Science:

• Neurology
• Nutritional Science
• Biomarkers

Background:

• Cerebral white matter hyperintensities (WMH) are associated with cognitive decline.
• The role of omega-3 polyunsaturated fatty acids (PUFAs) in brain health, specifically in relation to WMH, is not fully understood.
• Older adults with subjective memory complaints represent a population at risk for cognitive impairment.

Purpose of the Study:

• To investigate the cross-sectional and prospective associations between circulating red blood cell (RBC) omega-3 PUFAs and WMH.
• To examine these associations in dementia-free older adults experiencing subjective memory complaints.

Main Methods:

• Cross-sectional and prospective analyses were conducted on 234 older adults.
• Red blood cell omega-3 PUFA levels and white matter hyperintensity (WMH) volumes (measured via automated segmentation) were assessed.
• Linear regression models were used, adjusting for relevant covariates including age, sex, APOE e4 status, and vascular risk factors.

Main Results:

• No significant association was found between any of the eight tested RBC omega-3 PUFAs and WMH at baseline.
• No significant association was observed for the prospective analysis of WMH evolution over a 3-year follow-up period.

Conclusions:

• The study did not find evidence supporting a link between omega-3 PUFAs and WMH in non-demented older adults with memory complaints.
• Longitudinal studies with more extensive data on omega-3 PUFAs and WMH are warranted to further elucidate potential relationships.