OECD Series on Adverse Outcome Pathways
An Adverse Outcome Pathway (AOP) describes a logical sequence of causally linked events at different levels of biological organisation, which follows exposure to a stressor and leads to an adverse health effect in humans or wildlife. AOPs are the central element of a toxicological knowledge framework, promoted by member countries through OECD, built to support chemical risk assessment based on mechanistic reasoning. These AOPs are available in the AOP-Wiki, an interactive and virtual encyclopaedia for AOP development. Following their development and review, the endorsed AOPs are published in the OECD Series on Adverse Outcome Pathways. As scientific knowledge progresses, the publication of an AOP in this series does not preclude regular updates or new contributions to a given AOP. While the AOP-Wiki is a dynamic tool, only impactful changes to the AOP will be reflected in subsequent updates of the published AOP.
- ISSN: 2415170X (online)
- https://doi.org/10.1787/2415170X
Substance interaction with the pulmonary resident cell membrane components leading to pulmonary fibrosis
Lung fibrosis is a dysregulated or exaggerated tissue repair process resulting in the thickening or scarring of lung tissue. It involves the presence of sustained or repeated exposure to a stressor and intricate dynamics between several inflammatory and immune response cells, and the microenvironment of the alveolar-capillary region consisting of both immune and non-immune cells, and the lung interstitium. This AOP is applicable to a broad group of stressors of diverse properties e.g. metal dusts, pharmacological products, fibres, microorganisms, chemicals, including novel technology-enabled stressors such as nanomaterials. This AOP is referred to as AOP 173 in the Collaborative Adverse Outcome Pathway Wiki (AOP-Wiki).
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