2009
DOI: 10.1016/j.taap.2009.01.017
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Activation of endothelial cells after exposure to ambient ultrafine particles: The role of NADPH oxidase

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Cited by 69 publications
(74 citation statements)
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“…Superoxide removes NO and causes degradation of the cofactor tetrahydrobiopterin leading to uncoupling of NO synthase with further enhanced superoxide production and peroxynitrite production at the expense of NO. Such a mechanism has been shown in pulmonary microvascular endothelial cells exposed to ultrafi ne particles collected from ambient air (Mo et al, 2009 ). Similarly, activation of NADPH oxidase appeared to be central in the redox -dependent gene activation in A549 lung cells exposed to diesel exhaust particles (Amara et al, 2007 ).…”
Section: Cellular Generation Of Ros Induced By Particulatesmentioning
confidence: 70%
“…Superoxide removes NO and causes degradation of the cofactor tetrahydrobiopterin leading to uncoupling of NO synthase with further enhanced superoxide production and peroxynitrite production at the expense of NO. Such a mechanism has been shown in pulmonary microvascular endothelial cells exposed to ultrafi ne particles collected from ambient air (Mo et al, 2009 ). Similarly, activation of NADPH oxidase appeared to be central in the redox -dependent gene activation in A549 lung cells exposed to diesel exhaust particles (Amara et al, 2007 ).…”
Section: Cellular Generation Of Ros Induced By Particulatesmentioning
confidence: 70%
“…These pro-oxidative effects are strongly linked to the induction of pro-infl ammatory responses in the same cell types as previously reviewed by Araujo ( 2011 ). These include the activation of the NF-kB Montiel-Davalos et al 2010 ), p38 MAPK (Mo et al 2009 ;Sumanasekera et al 2007 ) and ERK1/2 pathways (Mo et al 2009 ) with subsequent upregulation of pro-infl ammatory factors such as TNF-α, IL-8, and monocyte chemotactic protein-1 (MCP-1), Montiel-Davalos et al 2010 ), and adhesion molecules such as VCAM ), E-selectin, P-selectin (MontielDavalos et al 2007 ) in endothelial cells. There is also an air pollution induced increase in production of TNF-α, IL-6 (Alfaro- Moreno et al 2002 ;Fujii et al 2002 ;Osornio-Vargas et al 2003 ;Pozzi et al 2003 ;Becker et al 2005a ;Amakawa et al 2003 ), IL-8 (Becker et al 2005b ;Monn and Becker 1999 ), IL1-α (Brown et al 2004 ), IL1-β (Jimenez et al 2002 ), granulocyte macrophage colony-stimulating factor (GM-CSF) (Fujii et al 2002 ;Ishii et al 2005 ) and macrophage-infl ammatory protein-2 (MIP-2) (Imrich et al 2007 ) in macrophages.…”
Section: Role Of Ros and Infl Ammationmentioning
confidence: 78%
“…Este puede participar en la reacción de Haber-Weiss formando radicales hidroxilo. La formación de especies reactivas del oxígeno podría explicar en parte el aumento de F 2 isoprostano plasmático, además el PM ultrafino activa a la MAP kinasa (MAPK) por especies reactivas del oxígeno en células endoteliales estimulándose la producción de IL-6 11,34 .…”
Section: Discussionunclassified
“…En ciertas condiciones coexisten en el aire ambiental elevadas concentraciones de ozono y partículas que contienen metales 9 . Al evaluar la respuesta aguda de ratas a la inhalación de material particulado y ozono, se detectó una posible interferencia en los mecanismos de defensa y aumento de agentes vasoconstrictores pulmonares 10,11 . La exposición a estos dos contaminantes aumenta la labilidad celular de los bronquiolos y del parénquima 9 , y produce aumento de neutrófilos, de proteínas totales y de la deshidrogenasa láctica 12 .…”
unclassified