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DOI10.1177/1091581815599350
Epigenetic Regulation in Environmental Chemical Carcinogenesis and its Applicability in Human Health Risk Assessment
Kuppusamy, Senthilkumar P.1; Kaiser, J. Phillip2; Wesselkamper, Scott C.2
发表日期2015-09-01
ISSN1091-5818
卷号34期号:5页码:384-392
英文摘要

Although several studies have shown that chemically mediated epigenetic changes are an etiological factor in several human disease conditions, the utility of epigenetic data, such as DNA methylation, in the current human health risk assessment paradigm is unclear. The objective of this study is to investigate the relationship between the points of departure (PODs) for cancer incidence and DNA methylation changes in laboratory animals exposed to the following environmental toxicants: bromodichloromethane, dibromochloromethane, chloroform, hydrazine, trichloroethylene, benzidine, trichloroacetic acid, and di(2-ethylhexyl) phthalate (DEHP; a known reproductive toxicant). The results demonstrate that the PODs for cancer incidence and altered DNA methylation are similar. Furthermore, based on the available data, the POD for DNA methylation appeared more sensitive compared to that for cancer incidence following the administration of DEHP to rats during different life stages. The high degree of correlation between PODs for cancer incidence and DNA methylation (for both total DNA and individual genes) suggests that DNA methylation end points could potentially be used as a screening tool in predicting the potential toxicity/carcinogenicity and in prioritizing large numbers of chemicals with sparse toxicity databases. The life stage during which treatment occurs is also an important consideration when assessing the potential application of epigenetic end points as a screening tool.


英文关键词epigenetics;DNA methylation;cancer;human health risk assessment
语种英语
WOS记录号WOS:000363979100002
来源期刊INTERNATIONAL JOURNAL OF TOXICOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/62167
作者单位1.US EPA, Off Res & Dev, NCEA, Oak Ridge Inst Sci & Educ Participant, Cincinnati, OH 45268 USA;
2.US EPA, Off Res & Dev, NCEA, Cincinnati, OH 45268 USA
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GB/T 7714
Kuppusamy, Senthilkumar P.,Kaiser, J. Phillip,Wesselkamper, Scott C.. Epigenetic Regulation in Environmental Chemical Carcinogenesis and its Applicability in Human Health Risk Assessment[J]. 美国环保署,2015,34(5):384-392.
APA Kuppusamy, Senthilkumar P.,Kaiser, J. Phillip,&Wesselkamper, Scott C..(2015).Epigenetic Regulation in Environmental Chemical Carcinogenesis and its Applicability in Human Health Risk Assessment.INTERNATIONAL JOURNAL OF TOXICOLOGY,34(5),384-392.
MLA Kuppusamy, Senthilkumar P.,et al."Epigenetic Regulation in Environmental Chemical Carcinogenesis and its Applicability in Human Health Risk Assessment".INTERNATIONAL JOURNAL OF TOXICOLOGY 34.5(2015):384-392.
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