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Analysis of calcifications in patients with coral reef aorta

Georg Schlieper1, Dirk Grotemeyer, Anke Aretz

  • 1Department of Nephrology and Clinical Immunology, RWTH University Hospital, and Central Facility for Electron Microscopy, RWTH University, Aachen, Germany. gschlieper@ukaachen.de

Annals of Vascular Surgery
|February 11, 2010
PubMed

Insights

Coral reef aorta involves extensive vascular calcification. Low levels of calcification inhibitors, including matrix Gla protein (MGP) and fetuin-A, suggest their role in this rare disease.

Area of Science:

  • Vascular Biology
  • Mineral Metabolism
  • Pathology

Background:

  • Coral reef aorta is a rare vascular condition characterized by dorsal visceral aorta calcifications.
  • The underlying pathogenesis and morphology remain largely unknown.

Purpose of the Study:

  • To investigate calcification inhibitors and the ultrastructure of calcifications in patients with coral reef aorta.

Main Methods:

  • Examined ten patients with coral reef aorta.
  • Utilized immunohistochemistry for matrix Gla protein (MGP) and fetuin-A expression.
  • Conducted electron microscopy and spectroscopy on calcified specimens.
  • Analyzed serum levels of fetuin-A, uncarboxylated MGP (ucMGP), and osteoprotegerin.

Main Results:

  • MGP was predominantly found near calcified areas.
  • Serum levels of ucMGP, fetuin-A, and osteoprotegerin were measured.
  • Ultrastructural analysis revealed a core-shell structure with multiple nuclei, composed of hydroxyl apatite.

Conclusions:

  • Coral reef aorta exhibits extensive calcification with multiple nuclei, similar to medial calcification.
  • Positive vascular MGP staining and low serum fetuin-A and ucMGP suggest their involvement in the disease's pathophysiology.
Abstract

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