Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-27796
van der Loo, B; Schildknecht, S; Zee, Rebecca; Bachschmid, M M (2009). Signalling processes in endothelial ageing in relation to chronic oxidative stress and their potential therapeutic implications in humans. Experimental Physiology, 94(3):305-310.
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Ageing is an important risk factor for the development of cardiovascular diseases. Vascular ageing is mainly characterized by endothelial dysfunction, an alteration of endothelium-dependent signalling processes and vascular remodelling. The underlying mechanisms comprise increased production of reactive oxygen species (ROS), inactivation of nitric oxide (.NO) and subsequent formation of peroxynitrite (ONOO(-)). Elevated ONOO(-) may exhibit new messenger functions by post-translational oxidative modification of intracellular regulatory proteins. Mitochondria are a major source of age-associated superoxide formation, as electrons are misdirected from the respiratory chain. Manganese superoxide dismutase (MnSOD), a mitochondrial antioxidant enzyme, is an integral part of the nucleoids and may protect mitochondrial DNA from ROS. A model linking .NO, mitochondria, MnSOD and its acetylation/deacetylation by sirtuins (NAD+-dependent class III histone deacetylases) may be the basis for a potentially new powerful therapeutic intervention in the ageing process.
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|Item Type:||Journal Article, refereed, further contribution|
|Communities & Collections:||04 Faculty of Medicine > University Hospital Zurich > Clinic for Cardiology|
|DDC:||610 Medicine & health|
|Deposited On:||15 Mar 2010 10:27|
|Last Modified:||27 Nov 2013 18:08|
|Additional Information:||The definitive version is available at www.blackwell-synergy.com|
|Free access at:||PubMed ID. An embargo period may apply.|
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