Microvascular endothelial function in Japanese early adolescents

Area of Science:

• Cardiovascular Research
• Pediatric Health
• Vascular Biology

Background:

• Endothelial dysfunction is an early indicator of atherosclerosis and future cardiovascular diseases.
• Increasing global prevalence of endothelial dysfunction in children and adolescents.
• Peripheral arterial tonometry is a validated, noninvasive method for assessing endothelial function.

Purpose of the Study:

• To assess anthropometric parameters, blood pressure, arterial stiffness, and peripheral endothelial function in Japanese early adolescents.
• To evaluate the association between the reactive hyperemia index (RHI) and these parameters.
• To determine the utility of peripheral arterial tonometry in pediatric populations.

Main Methods:

• 157 Japanese early adolescents (75 boys, 82 girls) underwent assessment.
• Peripheral endothelial function measured using peripheral arterial tonometry to calculate the reactive hyperemia index (RHI).
• Evaluated associations between RHI, anthropometric data, blood pressure, and arterial stiffness markers.

Main Results:

• The mean RHI was 1.85 ± 0.6, with no significant sex-based differences.
• RHI showed a significant association with systolic and diastolic blood pressures.
• No correlation was found between RHI and anthropometric parameters or arterial stiffness markers.

Conclusions:

• Peripheral arterial tonometry is a valuable noninvasive tool for assessing microvascular endothelial function in children and early adolescents.
• RHI is associated with blood pressure but not with anthropometric or arterial stiffness markers in this age group.
• Findings support the use of RHI for early detection of endothelial dysfunction in pediatric populations.