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Vol. 58. Núm. 4.
Páginas 269-277 (enero 2005)
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Vol. 58. Núm. 4.
Páginas 269-277 (enero 2005)
Acceso a texto completo
Metaloproteinasas de matriz: su implicación en las enfermedades vasculares periféricas
Matrix metalloproteases: their involvement in peripheral vascular diseases
Visitas
6209
J.C. Bohórquez-Sierra
Autor para correspondencia
jcbsierra@terra.es

Correspondencia: Unidad de Angiología y Cirugía Vascular. Hospital Universitario Puerta del Mar. Avda. Ana de Viya, 21. E-11009 Cádiz. Fax: +34 956 002491.
Unidad de Angiología y Cirugía Vascular. Hospital Universitario Puerta del Mar. Cádiz, España
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Resumen
Bibliografía
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Estadísticas
Resumen
Objetivos

Aportar los conceptos básicos sobre la estructura y la función de las metaloproteinasas de matriz (MMP) y exponer de forma resumida la información bibliográfica actualizada sobre su implicación en las enfermedades vasculares periféricas.

Desarrollo

La matriz extracelular desempeña un papel esencial en el mantenimiento de la integridad del sistema cardiovascular. En condiciones normales, las fibras de elastina y colágeno resisten la desestructuración espontánea y pueden degradarse por las MMP. Las MMP son enzimas proteolíticas que se encargan de la remodelación de la matriz extracelular y, en su conjunto, pueden degradar todos los constituyentes de ésta. Diversas publicaciones han demostrado la implicación de las MMP en algunas vasculopatías, especialmente en la formación de aneurismas, la hiperplasia intimal, la ateroesclerosis y las úlceras venosas, lo que ha llevado a estudiar la inhibición de las MMP en modelos experimentales de enfermedades vasculares.

Conclusiones

Las MMP, por su capacidad de degradar los componentes de la matriz extracelular, son enzimas que desempeñan un papel importante en procesos biológicos y patológicos múltiples, entre ellos algunas enfermedades vasculares. Los avances en el conocimiento de sus mecanismos de activación, la especificidad de sustratos y los mecanismos de inhibición por los inhibidores tisulares de las MMP han permitido el diseño de inhibidores sintéticos de las metaloproteinasas que probablemente permitan diseñar en el futuro nuevas estrategias terapéuticas para combatir dichas enfermedades.

Palabras clave:
Aneurisma
Ateroesclerosis
Hiperplasia intimal
Inhibidores tisulares de las metaloproteinasas
Insuficiencia venosa crónica
Metaloproteinasa
Summary
Aims

To report on the fundamental concepts concerning the structure and function of metalloproteases and to offer a brief summary of the latest data from the literature about the involvement of matrix metalloproteases (MMPs) in peripheral vascular diseases.

Development

The extracellular matrix plays an essential role in maintaining the integrity of the cardiovascular system. Under normal conditions, elastin and collagen fibres withstand spontaneous destructuring and can be degraded by MMPs. MMPs are proteolytic enzymes that are responsible for remodelling the extracellular matrix and, taken as a whole, can degrade all its components. Several publications have demonstrated the involvement of MMPs in certain vascular diseases, especially in the formation of aneurysms, intimal hyperplasias, atherosclerosis and venous ulcers, and this has led researchers to study the inhibition of MMPs in experimental models of vascular diseases.

Conclusions

Owing to their capacity to degrade the components of the extracellular matrix, MMPs are enzymes that play an important role in numerous biological and pathological processes, including some vascular diseases. The progress being made in our understanding of its mechanisms of action, substrate specificity and the mechanisms of inhibition used by the tissue inhibitors of MMPs has enabled us to design synthetic metalloprotease inhibitors that will probably make it possible in the future to design new therapeutic strategies with which to fight these diseases.

Key words:
Aneurysm
Atherosclerosis
Chronic venous insufficiency
Intimal hyperplasia
Metalloprotease
Tissue inhibitors of metalloproteases
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