Consideration of Physical Stressors in Cumulative Risk Assessment
Public Domain
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2018/02/16
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Description:Physical stressors represent an important class of factors that can affect the health of humans or ecosystems and should be considered in cumulative risk assessment. Physical stressors are defined here as biological agents (e.g., bacteria, viruses) or external forces (e.g., radiation, noise) that can modify exposure and/or elicit a physiological response from the exposed organism. Physical stressors can intersect with chemical stressors in at least three ways: (1) by directly interacting with chemicals to modify exposure (e.g., photoreactions of sunlight with air pollution), (2) by interacting with the same target system as a chemical stressor to elicit joint effects (e.g., noise and chemicals can both affect the physiological mechanism leading to hearing disorders), and (3) by interacting with the target system to alter its susceptibility or response to chemical exposure (e.g., virus-initiated disease leading to hyper-responsiveness to chemical insult). In this chapter, physical stressors will be discussed in terms of their actions on biological systems, modification of exposure or effects of chemical stressors, and suggestions for incorporation into cumulative risk assessment. [Description provided by NIOSH]
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ISBN:9783319562322
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Pages in Document:467-492
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NIOSHTIC Number:nn:20051478
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Citation:Chemical mixtures and combined chemical and nonchemical stressors: exposure, toxicity, analysis, and risk. Rider CV, Simmons JE, eds. Cham, Switzerland: Springer International Publishing AG, 2018 Feb; :467-492
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Contact Point Address:Cynthia V. Rider, National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
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Email:cynthia.rider@nih.gov
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Federal Fiscal Year:2018
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Peer Reviewed:True
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Source Full Name:Chemical mixtures and combined chemical and nonchemical stressors: exposure, toxicity, analysis, and risk
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Main Document Checksum:urn:sha-512:636db84105ea29f9966f9caf6a1b61ff926497048b250d0e3192a08fcfad7e517b96cc3a7fdb03d6d0de85803a026fae68a474ec1bcad94078f7d6e94ac48389
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