当前位置: X-MOL 学术Virus Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The impacts of viral inactivating methods on quantitative RT-PCR for COVID-19.
Virus Research ( IF 5 ) Pub Date : 2020-05-04 , DOI: 10.1016/j.virusres.2020.197988
Yueying Wang 1 , Wei Song 1 , Zuguo Zhao 2 , Ping Chen 1 , Jian Liu 1 , Chende Li 1
Affiliation  

OBJECTIVE This paper aims to explore the effect of four virus inactivation methods on the rapid detection results of COVID-19 nucleic acid. METHODS Collected samples of nasopharyngeal swabs from 2 patients diagnosed with COVID-19 at the First People's Hospital of Zhaoqing City, each of sample was divided into 5 groups (groupA∼E): A:Non-inactivated raw sample; B:75 % ethanol inactivation; C:56 ℃ incubation for 30 min inactivation; D:65 ℃ incubation for 10 min inactivation; E:Pre-inactivation using RNA virus special preservation fluid added into the sampling tube to treated the nasopharyngeal swab sample separately, using real-time fluorescent RT-PCR to detect the N gene of COVID-19 and the ORF1ab gene simultaneously. All the groups are diluted in 1:2, 1:4, 1:8 ratios. The objectives are to compare the effect of the varied inactivation method on CT(Cycle Threshold)results in PCR, conduct correlation and Bland-Altman analysis. RESULTS For the N gene and ORF1ab gene, the CT values of 4 inactivated and Non-inactivated treatment were correlated (P<0.001). The results of the four treatment methods and specimens without inactivated treatment have shown good consistency. CONCLUSION The treatment of nasopharyngeal swab specimens using mentioned four inactivated methods had no significant effect on the subsequent detection of the new COVID-19 nucleic acid test. Lab test-persons can flexibly adopt pre-inactivation methods to ensure the accuracy of virus nucleic acid test results, meanwhile guarantee the safety of lab test-persons.

中文翻译:

病毒灭活方法对COVID-19定量RT-PCR的影响。

目的探讨四种病毒灭活方法对COVID-19核酸快速检测结果的影响。方法收集肇庆市第一人民医院2例确诊为COVID-19的患者的鼻咽拭子样本,将其分为5组(A〜E组)。B:75%乙醇失活;C:56℃孵育30分钟灭活;D:65℃温育10分钟灭活;E:使用RNA病毒特殊保存液预灭活到采样管中,分别处理鼻咽拭子样品,使用实时荧光RT-PCR同时检测COVID-19的N基因和ORF1ab基因。所有组均以1:2、1:4、1:8的比例稀释。目的是比较各种灭活方法对PCR(循环阈值)结果的影响,进行相关分析和Bland-Altman分析。结果对于N基因和ORF1ab基因,4种灭活和非灭活处理的CT值均相关(P <0.001)。四种处理方法的结果和未经灭活处理的标本均显示出良好的一致性。结论采用上述四种灭活方法处理鼻咽拭子标本对随后新的COVID-19核酸检测的检测没有显着影响。实验室测试人员可以灵活采用预灭活方法,以确保病毒核酸测试结果的准确性,同时保证实验室测试人员的安全。结果对于N基因和ORF1ab基因,4种灭活和非灭活处理的CT值均相关(P <0.001)。四种处理方法的结果和未经灭活处理的标本均显示出良好的一致性。结论采用上述四种灭活方法处理鼻咽拭子标本对随后新的COVID-19核酸检测的检测没有显着影响。实验室测试人员可以灵活采用预灭活方法,以确保病毒核酸测试结果的准确性,同时保证实验室测试人员的安全。结果对于N基因和ORF1ab基因,四种灭活和非灭活处理的CT值均相关(P <0.001)。四种处理方法的结果和未经灭活处理的样品均显示出良好的一致性。结论采用上述四种灭活方法处理鼻咽拭子标本对随后新的COVID-19核酸检测的检测没有显着影响。实验室测试人员可以灵活采用预灭活方法,以确保病毒核酸测试结果的准确性,同时保证实验室测试人员的安全。结论采用上述四种灭活方法处理鼻咽拭子标本对随后新的COVID-19核酸检测的检测没有显着影响。实验室测试人员可以灵活采用预灭活方法,以确保病毒核酸测试结果的准确性,同时保证实验室测试人员的安全。结论采用上述四种灭活方法处理鼻咽拭子标本对随后新的COVID-19核酸检测的检测没有显着影响。实验室测试人员可以灵活采用预灭活方法,以确保病毒核酸测试结果的准确性,同时保证实验室测试人员的安全。
更新日期:2020-05-04
down
wechat
bug