Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat

Abstract Background Schistosomiasis japonica is an infectious disease caused by Schistosoma japonicum that seriously endangers human health. Domestic animals have important roles in disease transmission and goats are considered a primary reservoir host and source of infection. The prevalence and int...

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Main Authors: Qinghong Guo, Cheng Chen, Keke Zhou, Yugang Li, Laibao Tong, Yongcheng Yue, Kerou Zhou, Jinming Liu, Zhiqiang Fu, Jiaojiao Lin, Jiaxi Zhao, Pengxiang Sun, Yang Hong
Format: Article
Language:English
Published: BMC 2020-10-01
Series:Parasites & Vectors
Subjects:
Online Access:http://link.springer.com/article/10.1186/s13071-020-04420-8
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author Qinghong Guo
Cheng Chen
Keke Zhou
Yugang Li
Laibao Tong
Yongcheng Yue
Kerou Zhou
Jinming Liu
Zhiqiang Fu
Jiaojiao Lin
Jiaxi Zhao
Pengxiang Sun
Yang Hong
author_facet Qinghong Guo
Cheng Chen
Keke Zhou
Yugang Li
Laibao Tong
Yongcheng Yue
Kerou Zhou
Jinming Liu
Zhiqiang Fu
Jiaojiao Lin
Jiaxi Zhao
Pengxiang Sun
Yang Hong
author_sort Qinghong Guo
collection DOAJ
description Abstract Background Schistosomiasis japonica is an infectious disease caused by Schistosoma japonicum that seriously endangers human health. Domestic animals have important roles in disease transmission and goats are considered a primary reservoir host and source of infection. The prevalence and intensity of schistosomiasis infections have significantly decreased in China, and a more sensitive, specific detection method is urgently needed. The aim of this study was to develop a real-time PCR assay for accurate detection of S. japonicum infection in goats. Methods A real-time PCR method for detecting schistosomiasis japonica in goats was developed by amplification of a specific S. japonicum DNA fragment, and validated using a total of 94 negative and 159 positive plasma and serum samples collected in our previous study of S. japonicum infection. Both plasma and serum samples were evaluated by real-time PCR and enzyme-linked immunosorbent assay (ELISA). In addition, 120 goat plasma samples from an S. japonicum-endemic area (Wangjiang) and 33 from a non-endemic region (Weihai) were collected and evaluated using our method. Results The sensitivity and specificity of the real-time PCR for detecting infected samples were 98.74% (157/159, 95% CI: 95.53–99.85%) and 100% (94/94, 95% CI: 96.15–100%), respectively. For the ELISA, sensitivity and specificity were 98.11% (156/159, 95% CI: 94.59–99.61%) and 90.43% (85/94, 95% CI: 82.60–95.53%), respectively. Further, we found positivity rates for S. japonicum infection in Wangjiang and Weihai of 8.33% (10/120, 95% CI: 4.07–14.79%) and 0% (0/33, 95% CI: 0–10.58%), respectively. Conclusions The results of this study indicate that our real-time PCR method exhibits higher sensitivity and specificity than ELISA and is a useful method for detection of S. japonicum infection in goats.
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spelling doaj.art-5ffa4d4264474dca9896b62e125a21ab2022-12-21T17:59:11ZengBMCParasites & Vectors1756-33052020-10-011311810.1186/s13071-020-04420-8Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goatQinghong Guo0Cheng Chen1Keke Zhou2Yugang Li3Laibao Tong4Yongcheng Yue5Kerou Zhou6Jinming Liu7Zhiqiang Fu8Jiaojiao Lin9Jiaxi Zhao10Pengxiang Sun11Yang Hong12National Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesHuancui Development Center for Animal HusbandryWangjiang County Center for Animal Disease Control and PreventionNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesWangjiang County Center for Animal Disease Control and PreventionCenter for Disease Control and Prevention of HuancuiNational Reference Laboratory of Animal Schistosomiasis, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural SciencesAbstract Background Schistosomiasis japonica is an infectious disease caused by Schistosoma japonicum that seriously endangers human health. Domestic animals have important roles in disease transmission and goats are considered a primary reservoir host and source of infection. The prevalence and intensity of schistosomiasis infections have significantly decreased in China, and a more sensitive, specific detection method is urgently needed. The aim of this study was to develop a real-time PCR assay for accurate detection of S. japonicum infection in goats. Methods A real-time PCR method for detecting schistosomiasis japonica in goats was developed by amplification of a specific S. japonicum DNA fragment, and validated using a total of 94 negative and 159 positive plasma and serum samples collected in our previous study of S. japonicum infection. Both plasma and serum samples were evaluated by real-time PCR and enzyme-linked immunosorbent assay (ELISA). In addition, 120 goat plasma samples from an S. japonicum-endemic area (Wangjiang) and 33 from a non-endemic region (Weihai) were collected and evaluated using our method. Results The sensitivity and specificity of the real-time PCR for detecting infected samples were 98.74% (157/159, 95% CI: 95.53–99.85%) and 100% (94/94, 95% CI: 96.15–100%), respectively. For the ELISA, sensitivity and specificity were 98.11% (156/159, 95% CI: 94.59–99.61%) and 90.43% (85/94, 95% CI: 82.60–95.53%), respectively. Further, we found positivity rates for S. japonicum infection in Wangjiang and Weihai of 8.33% (10/120, 95% CI: 4.07–14.79%) and 0% (0/33, 95% CI: 0–10.58%), respectively. Conclusions The results of this study indicate that our real-time PCR method exhibits higher sensitivity and specificity than ELISA and is a useful method for detection of S. japonicum infection in goats.http://link.springer.com/article/10.1186/s13071-020-04420-8Schistosoma japonicumDiagnosisReal-time PCRELISAGoats
spellingShingle Qinghong Guo
Cheng Chen
Keke Zhou
Yugang Li
Laibao Tong
Yongcheng Yue
Kerou Zhou
Jinming Liu
Zhiqiang Fu
Jiaojiao Lin
Jiaxi Zhao
Pengxiang Sun
Yang Hong
Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
Parasites & Vectors
Schistosoma japonicum
Diagnosis
Real-time PCR
ELISA
Goats
title Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
title_full Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
title_fullStr Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
title_full_unstemmed Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
title_short Evaluation of a real-time PCR assay for diagnosis of schistosomiasis japonica in the domestic goat
title_sort evaluation of a real time pcr assay for diagnosis of schistosomiasis japonica in the domestic goat
topic Schistosoma japonicum
Diagnosis
Real-time PCR
ELISA
Goats
url http://link.springer.com/article/10.1186/s13071-020-04420-8
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