Abstract:
:Potential chronic health risks for children and prospective parents exposed to ethylbenzene were evaluated in response to the Voluntary Children's Chemical Evaluation Program. Ethylbenzene exposure was found to be predominately via inhalation with recent data demonstrating continuing decreases in releases and both outdoor and indoor concentrations over the past several decades. The proportion of ethylbenzene in ambient air that is attributable to the ethylbenzene/styrene chain of commerce appears to be relatively very small, less than 0.1% based on recent relative emission estimates. Toxicity reference values were derived from the available data, with physiologically based pharmacokinetic models and benchmark dose methods used to assess dose-response relationships. An inhalation non-cancer reference concentration or RfC of 0.3 parts per million (ppm) was derived based on ototoxicity. Similarly, an oral non-cancer reference dose or RfD of 0.5 mg/kg body weight/day was derived based on liver effects. For the cancer assessment, emphasis was placed upon mode of action information. Three of four rodent tumor types were determined not to be relevant to human health. A cancer reference value of 0.48 ppm was derived based on mouse lung tumors. The risk characterization for ethylbenzene indicated that even the most highly exposed children and prospective parents are not at risk for non-cancer or cancer effects of ethylbenzene.
journal_name
Crit Rev Toxicoljournal_title
Critical reviews in toxicologyauthors
Sweeney LM,Kester JE,Kirman CR,Gentry PR,Banton MI,Bus JS,Gargas MLdoi
10.3109/10408444.2015.1046157subject
Has Abstractpub_date
2015-01-01 00:00:00pages
662-726issue
8eissn
1040-8444issn
1547-6898journal_volume
45pub_type
杂志文章,评审abstract::Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has created a significant threat to global health. It originated in Wuhan, China and caused a total of 83,483 confirmed cases and 4634 deaths until June 2020. This novel virus spread primarily through respiratory...
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journal_title:Critical reviews in toxicology
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journal_title:Critical reviews in toxicology
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journal_title:Critical reviews in toxicology
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journal_title:Critical reviews in toxicology
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abstract::In recent years, many spatial epidemiological studies that use proximity of subjects to putative sources as a surrogate for exposure have been published and are increasingly cited as evidence of environmental problems requiring public health interventions. In these studies, the simple finding of a significant, positiv...
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abstract::Saturation diving is performed under extreme environmental conditions. The divers are confined to a limited space for several weeks under high environmental pressure and elevated oxygen partial pressure. At present, divers are protected against chemical exposure by standard exposure limits only adjusted for the increa...
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abstract::The cellular stress response protects organisms from damage resulting from exposure to a wide variety of stressors, including elevated temperatures, ultraviolet (UV) light, trace metals, and xenobiotics. The stress response entails the rapid synthesis of a suite of proteins referred to as stress proteins, or heat-shoc...
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