The role of oxygen free radicals in occupational and environmental lung diseases.
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Discussion
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Implication
Review details how inhaled toxins stimulate reactive oxygen species in the lung, highlighting cellular mechanisms critical for preventing occupational pulmonary disease.
Key Points
- To review the endogenous and exogenous sources of reactive oxygen species in pulmonary tissue and characterize the molecular mechanisms driving toxin-induced lung injury.
- Narrative synthesis of cellular and molecular pathways underlying free radical generation and tissue damage.
- Evaluation of primary occupational and environmental exposures, including asbestos, silica, coal, chromium, herbicides, bleomycin, and cigarette smoke.
- Inhaled particles and systemic xenobiotics stimulate persistent reactive oxygen species production via self-propagating, autocatalytic chain reactions.
- Reactive oxygen species disrupt intracellular signaling cascades, alter enzyme activity, and trigger the excessive release of proinflammatory cytokines and chemokines.
Cite This Study
Vallyathan et al. (1997) studied this question.