@article{Wiegman:2015:10.1016/j.jaci.2015.01.046,
author = {Wiegman, CH and Michaeloudes, C and Haji, G and Narang, P and Clarke, CJ and Russell, KE and Bao, W and Pavlidis, S and Barnes, PJ and Kanerva, J and Bittner, A and Rao, N and Murphy, MP and Kirkham, PA and Chung, KF and Adcock, IM},
doi = {10.1016/j.jaci.2015.01.046},
journal = {Journal of Allergy and Clinical Immunology},
pages = {769--780},
title = {Oxidative stress-induced mitochondrial dysfunction drives inflammation and airway smooth muscle remodeling in patients with chronic obstructive pulmonary disease},
url = {http://dx.doi.org/10.1016/j.jaci.2015.01.046},
volume = {136},
year = {2015}
}

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TY  - JOUR
AB  - BackgroundInflammation and oxidative stress play critical roles in patients with chronic obstructive pulmonary disease (COPD). Mitochondrial oxidative stress might be involved in driving the oxidative stress–induced pathology.ObjectiveWe sought to determine the effects of oxidative stress on mitochondrial function in the pathophysiology of airway inflammation in ozone-exposed mice and human airway smooth muscle (ASM) cells.MethodsMice were exposed to ozone, and lung inflammation, airway hyperresponsiveness (AHR), and mitochondrial function were determined. Human ASM cells were isolated from bronchial biopsy specimens from healthy subjects, smokers, and patients with COPD. Inflammation and mitochondrial function in mice and human ASM cells were measured with and without the presence of the mitochondria-targeted antioxidant MitoQ.ResultsMice exposed to ozone, a source of oxidative stress, had lung inflammation and AHR associated with mitochondrial dysfunction and reflected by decreased mitochondrial membrane potential (ΔΨm), increased mitochondrial oxidative stress, and reduced mitochondrial complex I, III, and V expression. Reversal of mitochondrial dysfunction by the mitochondria-targeted antioxidant MitoQ reduced inflammation and AHR. ASM cells from patients with COPD have reduced ΔΨm, adenosine triphosphate content, complex expression, basal and maximum respiration levels, and respiratory reserve capacity compared with those from healthy control subjects, whereas mitochondrial reactive oxygen species (ROS) levels were increased. Healthy smokers were intermediate between healthy nonsmokers and patients with COPD. Hydrogen peroxide induced mitochondrial dysfunction in ASM cells from healthy subjects. MitoQ and Tiron inhibited TGF-β–induced ASM cell proliferation and CXCL8 release.ConclusionsMitochondrial dysfunction in patients with COPD is associated with excessive mitochondrial ROS levels, which contribute to enhanced inflammat
AU  - Wiegman,CH
AU  - Michaeloudes,C
AU  - Haji,G
AU  - Narang,P
AU  - Clarke,CJ
AU  - Russell,KE
AU  - Bao,W
AU  - Pavlidis,S
AU  - Barnes,PJ
AU  - Kanerva,J
AU  - Bittner,A
AU  - Rao,N
AU  - Murphy,MP
AU  - Kirkham,PA
AU  - Chung,KF
AU  - Adcock,IM
DO  - 10.1016/j.jaci.2015.01.046
EP  - 780
PY  - 2015///
SN  - 1097-6825
SP  - 769
TI  - Oxidative stress-induced mitochondrial dysfunction drives inflammation and airway smooth muscle remodeling in patients with chronic obstructive pulmonary disease
T2  - Journal of Allergy and Clinical Immunology
UR  - http://dx.doi.org/10.1016/j.jaci.2015.01.046
UR  - http://hdl.handle.net/10044/1/29981
VL  - 136
ER  - 

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