Elevated production of prostanoids from the constitutive (COX-1) or inducible (COX-2) cyclo-oxygenases has been involved in the alterations in vascular function, structure and mechanical properties observed in cardiovascular diseases, including hypertension. In addition, it is well known that production of ROS (reactive oxygen species) plays an important role in the impaired contractile and vasodilator responses, vascular remodelling and altered vascular mechanics of hypertension. Of particular interest is the cross-talk between NADPH oxidase and mitochondria, the main ROS sources in hypertension, which may represent a vicious feed-forward cycle of ROS production. In recent years, there is experimental evidence showing a relationship between ROS and COX-derived products. Thus ROS can activate COX and the COX/PG (prostaglandin) synthase pathways can induce ROS production through effects on different ROS generating enzymes. Additionally, recent evidence suggests that the COX–ROS axis might constitute a vicious circle of self-perpetuating vasoactive products that have a pathophysiological role in altered vascular contractile and dilator responses and hypertension development. The present review discusses the current knowledge on the role of oxidative stress and COX-derived prostanoids in the vascular alterations observed in hypertension, highlighting new findings indicating that these two pathways act in concert to induce vascular dysfunction.
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Review Article|
September 13 2013
New roles for old pathways? A circuitous relationship between reactive oxygen species and cyclo-oxygenase in hypertension
Raquel Hernanz;
Raquel Hernanz
*Departamento de Bioquímica, Fisiología y Genética Molecular, Universidad Rey Juan Carlos, Alcorcón, Spain
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Ana M. Briones;
Ana M. Briones
†Departamento de Farmacología, Universidad Autónoma de Madrid. Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
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Mercedes Salaices;
†Departamento de Farmacología, Universidad Autónoma de Madrid. Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
Correspondence: Dr Maria J. Alonso (email [email protected]) or Dr Mercedes Salaices (email [email protected]).
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María J. Alonso
*Departamento de Bioquímica, Fisiología y Genética Molecular, Universidad Rey Juan Carlos, Alcorcón, Spain
Correspondence: Dr Maria J. Alonso (email [email protected]) or Dr Mercedes Salaices (email [email protected]).
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Publisher: Portland Press Ltd
Received:
January 03 2013
Revision Received:
June 13 2013
Accepted:
June 25 2013
Online ISSN: 1470-8736
Print ISSN: 0143-5221
© The Authors Journal compilation © 2014 Biochemical Society
2014
Clin Sci (Lond) (2014) 126 (2): 111–121.
Article history
Received:
January 03 2013
Revision Received:
June 13 2013
Accepted:
June 25 2013
Citation
Raquel Hernanz, Ana M. Briones, Mercedes Salaices, María J. Alonso; New roles for old pathways? A circuitous relationship between reactive oxygen species and cyclo-oxygenase in hypertension. Clin Sci (Lond) 1 January 2014; 126 (2): 111–121. doi: https://doi.org/10.1042/CS20120651
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