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| Publications [#168968] of Mark W. Dewhirst
Papers Published
- SK Kang, ZN Rabbani, RJ Folz, ML Golson, H Huang, D Yu, TS Samulski, MW Dewhirst, MS Anscher, Z Vujaskovic, Overexpression of extracellular superoxide dismutase protects mice from radiation-induced lung injury.,
International journal of radiation oncology, biology, physics, United States, vol. 57 no. 4
(November, 2003),
pp. 1056-66, ISSN 0360-3016
(last updated on 2009/12/31)
Abstract:
PURPOSE: The purpose of this study was to determine if radiation-induced lung injury is associated with prolonged oxidative stress, and whether chronic overexpression of extracellular superoxide dismutase (EC-SOD) in the lung of transgenic mice protects against radiation-induced lung injury. METHODS AND MATERIALS: Whole-lung radiation was delivered to EC-SOD overexpressing B6C3 transgenic (XRT-TG) mice and wild-type littermates (XRT-WT). Pulmonary function was assessed by breathing frequency. Right lung wet weight was used as a gross indicator of lung damage. Histopathology was used to assess collagen deposition and tissue fibrosis according to an established grading system. Immunohistochemistry was used to stain and quantify the number of macrophages. ELISA was used to measure activated TGF-beta1. Oxidative stress was assessed by measuring lipid oxidation products (malondialic acid) by HPLC. RESULTS: Four of six XRT-WT mice required euthanasia at 15-19 weeks postradiation because of respiratory distress, whereas no XRT-TG mouse developed distress. All assessments of lung damage at 15-20 weeks postradiation were higher for XRT-WT mice compared with the XRT-TG mice, including breathing frequency (380 vs. 286 bpm, p Keywords:
Animals • Collagen • Lipid Metabolism • Lung • Lung Diseases • Macrophages • Mice • Mice, Inbred C3H • Mice, Inbred C57BL • Mice, Transgenic • Organ Size • Oxidation-Reduction • Oxidative Stress* • Pulmonary Fibrosis • Radiation Injuries • Respiration • Superoxide Dismutase • Transforming Growth Factor beta • Transforming Growth Factor beta1 • analysis • enzymology* • etiology • metabolism • metabolism* • pathology • prevention & control* • radiation effects
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