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[Expression of cellular adhesion molecules and HLA-DR antigen on vascular endothelial cells in hemangiomas.]

Xing-jun Qin1, Pan Qiu, Xu-kai Wang

  • 1Department of Oral Maxillofacial Surgery, The First Affiliated Hospital, China Medical University, Shenyang 110001, China. qinxj1989@sina.com

Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
|October 30, 2004
PubMed

Insights

Intercellular Adhesion Molecule 3 (ICAM-3) and CD34 are highly expressed in early hemangiomas, decreasing as they involute. HLA-DR expression increases with endothelial cell maturation during hemangioma regression.

Area of Science:

  • Vascular biology
  • Immunohistochemistry
  • Dermatopathology

Context:

  • Hemangiomas are common pediatric vascular tumors.
  • Endothelial cell (EC) behavior is critical in hemangioma development and resolution.
  • Adhesion molecules play key roles in EC interactions and tissue remodeling.

Purpose:

  • To investigate the expression patterns of ICAM-3, CD34, and HLA-DR on hemangioma endothelial cells.
  • To correlate the expression of these markers with different stages of hemangioma development (proliferating vs. involuting).
  • To understand the functional implications of these adhesion molecules in hemangioma pathogenesis.

Summary:

  • ICAM-3 and CD34 showed high expression in proliferating hemangiomas, with significantly reduced expression in involuting hemangiomas (P<0.001).
  • Both markers were minimally expressed in vascular malformations and normal skin, distinguishing them from hemangiomas (P<0.001).
  • HLA-DR expression was absent in the proliferating phase and highly expressed in the mature, involuting phase of hemangiomas (P<0.001), correlating with EC differentiation.

Impact:

  • ICAM-3 and CD34 may be involved in early angiogenesis and the pathological processes of hemangioma formation and regression.
  • HLA-DR's expression pattern suggests a role in EC maturation or activation during hemangioma resolution.
  • Findings contribute to understanding the molecular mechanisms underlying hemangioma progression and regression.
Abstract

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