Depressed mood and flow-mediated dilation: a systematic review and meta-analysis

Area of Science:

• Cardiovascular Research
• Psychoneuroimmunology
• Endothelial Function Studies

Background:

• Endothelial dysfunction is a key factor in cardiovascular disease.
• Depression is a prevalent mental health condition associated with increased cardiovascular risk.
• Flow-mediated dilation (FMD) is a non-invasive measure of endothelial function.

Purpose of the Study:

• To systematically review and quantitatively assess the literature on the association between depressed mood and FMD in adults.
• To evaluate the strength and consistency of the relationship between depression and endothelial function.

Main Methods:

• Systematic and quantitative literature review of English-language articles published up to December 2010.
• Inclusion of cross-sectional and retrospective studies examining FMD and depression in healthy adults and cardiovascular patients.
• Quality assessment and data extraction from 12 selected studies (total N = 1491).

Main Results:

• A significant inverse correlation was found between depressed mood and FMD across studies (r = 0.19, p = .001).
• Eight of the 12 studies reported a significant inverse association, with moderate effect sizes.
• Stronger associations were observed in higher-quality studies, studies of cardiovascular patients, and studies using maximum vasodilation for FMD assessment.

Conclusions:

• Evidence supports an inverse correlation between depressed mood and endothelial function (FMD).
• Future research should prioritize prospective studies with methodological consistency in FMD testing.
• Broader and more diverse sampling is recommended to strengthen generalizability.