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Vasa vasorum enhancement on optical coherence tomography in Kawasaki disease

Nobuyuki Kakimoto1, Hiroyuki Suzuki1,2, Akira Taruya3

  • 1Department of Pediatrics, Wakayama Medical University, Wakayama, Japan.

Pediatric Research
|July 22, 2024
PubMed

Insights

Vasa vasorum (VV) enhancement correlates with intimal thickening in Kawasaki disease (KD) patients, suggesting a role in coronary artery aneurysm regression and healing.

Area of Science:

  • Cardiovascular Research
  • Pediatric Vasculitis
  • Medical Imaging

Background:

  • Kawasaki disease (KD) can lead to coronary artery aneurysms (CAA) of unknown cause.
  • Understanding the underlying pathology is crucial for managing KD complications.

Purpose of the Study:

  • To investigate the relationship between vasa vasorum (VV) and intimal thickening in KD patients.
  • To utilize optical coherence tomography (OCT) for detailed coronary artery wall analysis in KD.

Main Methods:

  • Optical coherence tomography (OCT) was used to examine 43 coronary artery branches in 21 KD patients.
  • Coronary arteries were categorized into: persistent CAA, regressed CAA, and no CAA groups.
  • The number, distribution of VV, and intimal thickening were assessed using OCT.

Main Results:

  • Intimal thickening was significantly more pronounced in the CAA and regressed groups compared to the no CAA group.
  • The regressed CAA group showed a higher number of VV than the CAA and no CAA groups.
  • Both adventitial and internal VV counts positively correlated with intimal thickness; internal VV were absent in the no CAA group.

Conclusions:

  • Vasa vasorum (VV) enhancement is associated with intimal thickening in Kawasaki disease (KD).
  • VV may play a role in the healing process of coronary artery lesions, including CAA regression.
  • VV enhancement is implicated in the pathomechanism during the convalescent phase of KD.
Abstract

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