Endothelial function evaluated by flow-mediated dilatation in pediatric vascular disease.

Area of Science:

• Pediatric Cardiology
• Vascular Biology
• Endocrinology

Background:

• Endothelial dysfunction is an early indicator of cardiovascular disease.
• Kawasaki disease (KD) and diabetes mellitus (DM) are significant pediatric conditions affecting vascular health.

Purpose of the Study:

• To assess endothelial function in children with KD and DM compared to healthy controls.
• To investigate the relationship between flow-mediated dilatation (FMD) and intima-media complex thickness in these pediatric populations.

Main Methods:

• Flow-mediated dilatation (FMD) and intima-media complex of the common carotid artery were measured in 41 controls, 24 with KD, and 46 with DM.
• Participants ranged from 3 to 23 years old.
• Data were analyzed to compare FMD and intima-media complex across groups and within subgroups (e.g., KD with/without aneurysm, DM with high/normal HbA1c).

Main Results:

• FMD was significantly reduced in children with KD and DM compared to controls.
• No significant difference in intima-media complex was observed among the groups.
• FMD was lower in KD patients with coronary arterial aneurysms and in DM patients with higher HbA1c levels.

Conclusions:

• Endothelial impairment, detected by reduced FMD, is evident in children with KD or type 1 DM, even without overt vascular complications.
• FMD impairment occurs before significant changes in intima-media complex thickness.
• Measuring both FMD and intima-media complex may offer valuable insights for predicting future vascular complications in children.