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Dadun > Depósito Académico > CIMA (Centro de Investigación Médica Aplicada) > Área de Ciencias Cardiovasculares > Aterosclerosis e inflamación > DA - CIMA - Cardiovasculares - Aterosclerosis e inflamación - Artículos de revista >

Different expression of MMPs/TIMP-1 in human atherosclerotic lesions. Relation to plaque features and vascular bed
Authors: Orbe, J. (Josune)
Fernandez, L. (L.)
Rodriguez, J.A. (José Antonio)
Rabago, G. (Gregorio)
Belzunce, M. (M.)
Monasterio, A. (A.)
Roncal, C. (Carmen)
Paramo, J.A. (José Antonio)
Keywords: Metalloproteinases
TIMP-1
Atherosclerosis
Calcification
Collagen
Aneurysm
Issue Date: 2003
Publisher: Elsevier
Publisher version: http://www.sciencedirect.com/science/article/pii/S002191500300251X
ISSN: 1879-1484
Citation: Orbe J, Fernandez L, Rodriguez JA, Rabago G, Belzunce M, Monasterio A, et al. Different expression of MMPs/TIMP-1 in human atherosclerotic lesions. Relation to plaque features and vascular bed. Atherosclerosis 2003 Oct;170(2):269-276.
Abstract
BACKGROUND: Proteolytic imbalance might determine arterial remodeling and plaque destabilization in atherosclerotic vessels. The aim of this study was to examine differences in the patterns of metalloproteinases (MMPs) and MMP inhibitor (TIMP-1) expression in advanced human atheromas, both in relation to the plaque features and the vascular bed involved. METHODS AND RESULTS: Immunohistochemistry for MMP-1, -3, -9 and TIMP-1 as well as the collagen content were measured in vascular sections from patients undergoing peripheral revascularization (carotid n=11, femoral n=23) and aorto-coronary bypass surgery (mammary arteries n=20, as controls). Increased expression of all MMPs was detected in atherosclerotic as compared with control sections (P<0.01). Aneurysmal plaques showed a significant increase of MMP-1 and-3 and a reduction in total collagen (P<0.05) in relation to occlusive lesions. Calcification areas in atherosclerotic plaques were consistently associated with increased TIMP-1 expression (P<0.01). Finally, MMP-9 expression was higher in occlusive lesions from carotid than femoral arteries (P<0.01). CONCLUSIONS: Aneurysm lesions expressed higher MMP-1 and-3 expression than occlusive plaques, and MMP-9 was mainly detected in carotid as compared with femoral arteries. TIMP-1 was associated with arterial calcification. These differences in the MMPs/TIMP-1 expression might determine the evolution of advanced atherosclerotic plaques and contribute to its vulnerability.
Permanent link: http://hdl.handle.net/10171/22260
Appears in Collections:DA - CIMA - Cardiovasculares - Aterosclerosis e inflamación - Artículos de revista

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