Detection of infectious prions in urine.

Detection of infectious prions in urine.
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DOI:
10.1016/j.febslet.2008.08.003
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发表时间:
2008-09-22
期刊:
影响因子:
3.5
通讯作者:
Soto, Claudio
Soto, Claudio
中科院分区:
生物学3区
文献类型:
--
作者:
Gonzalez-Romero, Dennisse;Barria, Marcelo A.;Leon, Patricia;Morales, Rodrigo;Soto, Claudio

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朊病毒是朊病毒疾病的病原体,朊病毒疾病似乎完全由错误折叠的朊病毒蛋白(PrPSc)组成。朊病毒的传播机制尚不清楚。在这项研究中,我们试图检测实验感染动物的尿液中的朊病毒。在约80%的研究动物中检测到PrPSc,而在对照动物中未观察到假阳性。半定量计算表明,尿液中的PrPSc浓度比血液中低约10倍。有趣的是,存在于尿液中的PrPSc保持其感染性。我们的数据表明,少量的传染性朊病毒排泄在尿液中。这些发现表明,尿液是朊病毒传播的一个可能来源。
Prions are the infectious agents responsible for prion diseases, which appear to be composed exclusively by the misfolded prion protein (PrPSc). The mechanism of prion transmission is unknown. In this study we attempted to detect prions in urine of experimentally infected animals. PrPSc was detected in ~ 80% of the animals studied, whereas no false positives were observed among the control animals. Semi-quantitative calculations suggest that PrPSc concentration in urine is around 10-fold lower than in blood. Interestingly, PrPSc present in urine maintains its infectious properties. Our data indicate that low quantities of infectious prions are excreted in the urine. These findings suggest that urine is a possible source of prion transmission.
DOI: 10.1371/journal.pone.0000435
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