oxidative stress and free radicals in copd – implications and relevance for treatment

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ID: 211603
2014
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Abstract
Wolfgang Domej,1 Karl Oettl,2 Wilfried Renner31Division of Pulmonology, Department of Internal Medicine, 2Institute of Physiological Chemistry, 3Clinical Institute of Medical and Chemical Diagnostics, Medical University of Graz, Graz, AustriaAbstract: Oxidative stress occurs when free radicals and other reactive species overwhelm the availability of antioxidants. Reactive oxygen species (ROS), reactive nitrogen species, and their counterpart antioxidant agents are essential for physiological signaling and host defense, as well as for the evolution and persistence of inflammation. When their normal steady state is disturbed, imbalances between oxidants and antioxidants may provoke pathological reactions causing a range of nonrespiratory and respiratory diseases, particularly chronic obstructive pulmonary disease (COPD). In the respiratory system, ROS may be either exogenous from more or less inhalative gaseous or particulate agents such as air pollutants, cigarette smoke, ambient high-altitude hypoxia, and some occupational dusts, or endogenously generated in the context of defense mechanisms against such infectious pathogens as bacteria, viruses, or fungi. ROS may also damage body tissues depending on the amount and duration of exposure and may further act as triggers for enzymatically generated ROS released from respiratory, immune, and inflammatory cells. This paper focuses on the general relevance of free radicals for the development and progression of both COPD and pulmonary emphysema as well as novel perspectives on therapeutic options. Unfortunately, current treatment options do not suffice to prevent chronic airway inflammation and are not yet able to substantially alter the course of COPD. Effective therapeutic antioxidant measures are urgently needed to control and mitigate local as well as systemic oxygen bursts in COPD and other respiratory diseases. In addition to current therapeutic prospects and aspects of genomic medicine, trending research topics in COPD are presented.Keywords: reactive oxygen species, reactive nitrogen species, chronic obstructive pulmonary disease, antioxidants
Reference Key
w2014internationaloxidative Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Domej W;Oettl K;Renner W
Journal tijdschrift voor geneeskunde
Year 2014
DOI
DOI not found
URL
http://www.dovepress.com/oxidative-stress-and-free-radicals-in-copd-ndash-implications-and-rele-peer-reviewed-article-COPD
Keywords
diseases of the respiratory system

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