Histochemistry and Cell Biology

, Volume 132, Issue 5, pp 559–565

Fibulin-1 and fibrinogen in human atherosclerotic lesions

Authors

    • Department of Regenerative Medicine and Cell BiologyMedical University of South Carolina
  • Asashi Tanaka
    • Department of Clinical Laboratory MedicineHachioji Medical Center of Tokyo Medical University
  • Elizabeth P. Smith
    • Center for Vascular and Inflammatory DiseasesUniversity of Maryland School of Medicine
  • Waleed O. Twal
    • Department of Regenerative Medicine and Cell BiologyMedical University of South Carolina
  • Kelley M. Argraves
    • Department of Regenerative Medicine and Cell BiologyMedical University of South Carolina
  • Daping Fan
    • Department of Cell Biology and Anatomy, School of MedicineUniversity of South Carolina
  • Christian C. Haudenschild
    • Department of PathologyGeorge Washington University Medical Center
Original Paper

DOI: 10.1007/s00418-009-0628-7

Cite this article as:
Argraves, W.S., Tanaka, A., Smith, E.P. et al. Histochem Cell Biol (2009) 132: 559. doi:10.1007/s00418-009-0628-7

Abstract

Fibulin-1 is a fibrinogen-binding blood protein and a component of many extracellular matrices (ECM) including those of blood vessels. In this study, the deposition patterns of fibulin-1 and fibrinogen were examined in human coronary artery atherosclerotic lesions excised by atherectomy from 20 patients. Fibulin-1 deposition was found to be closely overlapping with fibrinogen located within the atherosclerotic lesions and in regions containing fresh thrombi. Pronounced intracellular fibulin-1 immunostaining was apparent in lesion areas rich in macrophages and foam cells, although THP-1 macrophages and foam cells were found not to express fibulin-1. Strong ECM deposition of fibulin-1 was observed in acellular atheromatous and myxomatous regions. By contrast, fibulin-1 was present at relatively low levels in the ECM associated with smooth muscle cells within and outside of lesions and was not detected in sclerotic regions. These results reveal the pattern of fibulin-1 within human atherosclerotic lesions and highlight the potential for fibulin-1, perhaps derived from the blood and acting in conjunction with fibrinogen, to play a role in the etiology and cardiovascular disease progression, particularly with respect to thrombotic aspects of atherosclerosis.

Keywords

Fibulin-1FibrinogenExtracellular matrixAtherosclerosis

Copyright information

© Springer-Verlag 2009