PMCA screening of retropharyngeal lymph nodes in white-tailed deer and comparisons with ELISA and IHC.

PMCA screening of retropharyngeal lymph nodes in white-tailed deer and comparisons with ELISA and IHC.
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DOI:
10.1038/s41598-023-47105-9
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发表时间:
2023-11-17
期刊:
影响因子:
4.6
通讯作者:
Morales R
Morales R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Benavente R;Reed JH;Lockwood M;Morales R

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慢性消耗性疾病(CWD)是一种影响宫颈的Pron疾病。CWD的诊断是通过咽后淋巴结的酶联免疫吸附试验(ELISA)和免疫组织化学(IHC)进行的。不幸的是,这些技术对生物标记物(CWD-Prion)的敏感性有限。两种体外Prion扩增技术,实时抖动诱导转换(RT-QuIC)和蛋白质误折叠循环扩增(PMCA),在检测组织和体液中的CWD-Prion方面显示出很好的前景。最近的研究表明,RT-QuIC与ELISA和IHC相比产生了类似的结果。在这里,我们分析了1003个德克萨斯州白尾鹿的咽后淋巴结(RPLN)。与ELISA/IHC相比,PMCA检测CWD的比率更高,鉴定了不同的Prion菌株,并揭示了CWD-Prion在以前没有历史的地方的存在。这些发现表明,PMCA比目前的标准技术具有更高的灵敏度,对于快速和菌株特异性的CWD检测可能是有价值的。
Chronic wasting disease (CWD) is a prion disease affecting cervids. CWD diagnosis is conducted through enzyme-linked immunosorbent assay (ELISA) and immunohistochemistry (IHC) in retropharyngeal lymph nodes. Unfortunately, these techniques have limited sensitivity against the biomarker (CWD-prions). Two in vitro prion amplification techniques, real-time quaking-induced conversion (RT-QuIC) and protein misfolding cyclic amplification (PMCA), have shown promise in detecting CWD-prions in tissues and bodily fluids. Recent studies have demonstrated that RT-QuIC yields similar results compared to ELISA and IHC. Here, we analyzed 1003 retropharyngeal lymph nodes (RPLNs) from Texas white-tailed deer. PMCA detected CWD at a higher rate compared to ELISA/IHC, identified different prion strains, and revealed the presence of CWD-prions in places with no previous history. These findings suggest that PMCA exhibits greater sensitivity than current standard techniques and could be valuable for rapid and strain-specific CWD detection.
DOI: 10.1371/journal.pone.0004848
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