Microstructural brain tissue damage in metabolic syndrome.

Area of Science:

• Neuroimaging
• Metabolic Health
• Aging Research

Background:

• Metabolic syndrome is a cluster of conditions increasing cardiovascular risk.
• Brain health is increasingly recognized as being influenced by metabolic factors.
• Early detection of brain changes associated with metabolic syndrome is crucial for intervention.

Purpose of the Study:

• To investigate the association between metabolic syndrome risk factors and brain tissue integrity.
• To assess macrostructural and microstructural brain changes using magnetic resonance imaging (MRI).
• To identify specific metabolic syndrome components contributing to brain tissue alterations.

Main Methods:

• 130 subjects from the Leiden Longevity Study underwent MRI scans.
• A metabolic syndrome score was calculated based on Adult Treatment Panel III criteria.
• Linear and logistic regression analyses were used to assess associations with brain macrostructure and microstructure (MTR, FA, MD).

Main Results:

• No association was found between metabolic syndrome and brain macrostructure.
• Metabolic syndrome was associated with decreased gray and white matter peak height and increased gray matter mean diffusivity (MD).
• Serum HDL cholesterol, triglycerides, BMI, and diastolic blood pressure were identified as independent factors associated with these microstructural brain changes.

Conclusions:

• Early manifest metabolic syndrome is associated with detectable brain tissue decline.
• Specific metabolic factors, including serum HDL cholesterol, triglycerides, BMI, and diastolic blood pressure, independently impact brain tissue integrity.
• These findings highlight the importance of managing metabolic health for preserving brain health.