Advances in understanding benzene health effects and susceptibility.

Advances in understanding benzene health effects and susceptibility.
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DOI:
10.1146/annurev.publhealth.012809.103646
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发表时间:
2010
影响因子:
20.8
通讯作者:
Smith MT
Smith MT
中科院分区:
医学1区
文献类型:
--
作者:
Smith MT

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苯在我们的环境中是一种无处不在的化学物质,它会导致急性白血病和其他血液学癌症。与儿童白血病相关的证据越来越多。暴露于苯可导致多种改变,有助于白血病的过程,表明一个多模态的作用机制。需要研究阐明多种代谢物在苯毒性中的不同作用及其形成途径。迄今为止的研究已经确定了一些候选基因的多态性,这些基因赋予了苯血液毒性的易感性。然而,需要一个全基因组的研究来真正评估遗传变异在易感性中的作用。在低水平的职业接触中,苯会影响血液形成系统,没有证据表明存在阈值。接触苯可能没有安全水平,所有的接触都构成一定的线性风险,如果不是超线性的,和添加剂的方式。
Benzene is a ubiquitous chemical in our environment that causes acute leukemia and probably other hematological cancers. Evidence for an association with childhood leukemia is growing. Exposure to benzene can lead to multiple alterations that contribute to the leukemogenic process, indicating a multimodal mechanism of action. Research is needed to elucidate the different roles of multiple metabolites in benzene toxicity and the pathways that lead to their formation. Studies to date have identified a number of polymorphisms in candidate genes that confer susceptibility to benzene hematotoxicity. However, a genome-wide study is needed to truly assess the role of genetic variation in susceptibility. Benzene affects the blood-forming system at low levels of occupational exposure, and there is no evidence of a threshold. There is probably no safe level of exposure to benzene, and all exposures constitute some risk in a linear, if not supralinear, and additive fashion.
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