Fate of prions in soil: a review.

Fate of prions in soil: a review.
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DOI:
10.2134/jeq2010.0412
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发表时间:
2011-03
影响因子:
2.4
通讯作者:
Pedersen JA
Pedersen JA
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Smith CB;Booth CJ;Pedersen JA

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朊病毒是传染性海绵状脑病(tse)的病原,tse是一类影响人类和其他哺乳动物的致命神经退行性疾病。致病性朊病毒蛋白是宿主编码的朊病毒蛋白的一种错误折叠形式,代表了感染因子的主要成分,如果不是唯一成分的话。环境途径的TSE传播涉及羊痒病和鹿,麋鹿和驼鹿的慢性消耗性疾病(CWD)的动物流行病。土壤是痒病和CWD病原体的环境储存库,它们可以在环境中持续存在数年。附着在土壤颗粒上可能会影响朊病毒在环境中的持久性和传染性。目前缺乏有效的方法来灭活土壤中的TSE病原体,并且自然降解机制对TSE传染性的影响在很大程度上是未知的。需要更好地了解影响土壤中朊病毒的流动性、持久性和生物可利用性的过程,以管理被tse污染的环境。
Prions are the etiological agents of transmissible spongiform encephalopathies (TSEs), a class of fatal neurodegenerative diseases affecting humans and other mammals. The pathogenic prion protein is a misfolded form of the host-encoded prion protein and represents the predominant, if not sole, component of the infectious agent. Environmental routes of TSE transmission are implicated in epizootics of sheep scrapie and chronic wasting disease (CWD) of deer, elk, and moose. Soil represents a plausible environmental reservoir of scrapie and CWD agents, which can persist in the environment for years. Attachment to soil particles likely influences the persistence and infectivity of prions in the environment. Effective methods to inactivate TSE agents in soil are currently lacking, and the effects of natural degradation mechanisms on TSE infectivity are largely unknown. An improved understanding of the processes affecting the mobility, persistence, and bioavailability of prions in soil is needed for the management of TSE-contaminated environments.
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