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Janwan P, Sadaow L, Rodpai R, Yamasaki H, Luvira V, Sukeepaisarnjaroen W, Kitkhuandee A, Paonariang K, Sanpool O, Boonroumkaew P, Thanchomnang T, Mita T, Intapan PM, Maleewong W. Evaluation of total immunoglobulin G and subclass antibodies in an enzyme-linked immunosorbent assay for serodiagnosis of human amebic liver abscess. PeerJ 2022; 10:e14085. [PMID: 36196402 PMCID: PMC9527022 DOI: 10.7717/peerj.14085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/29/2022] [Indexed: 01/20/2023] Open
Abstract
Background Amebic liver abscess (ALA) caused by Entamoeba histolytica is usually diagnosed based on its clinical symptoms, medical imaging abnormalities of the liver, and serological tests, the most common being the enzyme-linked immunosorbent assay (ELISA). For more than three decades, no investigation has evaluated the diagnostic performance of immunoglobulin G (IgG) subclasses in the serodiagnosis of ALA. Herein, we assessed the efficiencies of anti-amebic IgG and IgG subclasses for diagnosing ALA. Methods A serological ELISA-based test was performed to assess its diagnostic performance using a total of 330 serum samples from ALA patients (n = 14), healthy individuals (n = 40), and patients with other diseases (n = 276). Results ELISA targeting the total IgG antibody to E. histolytica antigen exhibited 100% sensitivity 95% CI [76.8-100.0] and 97.8% specificity 95% CI [95.5-99.1], whereas the assay targeting IgG1 showed the same sensitivity (100% 95% CI [76.8-100.0]) and a slightly higher specificity (99.1% 95% CI [97.3-99.8]). The other IgG subclasses (IgG2, IgG3, and IgG4) displayed a lower sensitivity and specificity. The sensitivity and specificity did not significantly differ between tests measuring total IgG and IgG1 (Exact McNemar's test; p > 0.05), with a concordance of 98.2%, represented by a Cohen's kappa of 0.83 (p < 0.001), indicating almost perfect agreement. Conclusion ELISA targeting IgG1 can provide valuable information to clinicians in differentiating ALA from other parasitic diseases, cancers, cirrhosis, and viral hepatitis. However, enzyme-conjugated anti-human total IgG is cheaper than anti-human IgG subclasses. Therefore, we suggest that total IgG-based ELISA is sufficient for the routine serodiagnosis of human ALA and possibly other clinical manifestations of invasive amebiasis.
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Affiliation(s)
- Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand,Hematology and Transfusion Science Research Center, Walailak University, Nakhon Si Thammarat, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan,Department of Tropical Medicine and Parasitology, Juntendo University School of Medicine, Tokyo, Japan
| | - Vor Luvira
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Amnat Kitkhuandee
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Krisada Paonariang
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand,Faculty of Medicine, Mahasarakham University, Maha Sarakham, Thailand
| | - Toshihiro Mita
- Department of Tropical Medicine and Parasitology, Juntendo University School of Medicine, Tokyo, Japan
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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Yuan R, Huang J, Zhang X, Ruan S. Modeling the Transmission Dynamics of Clonorchiasis in Foshan, China. Sci Rep 2018; 8:15176. [PMID: 30310106 PMCID: PMC6181966 DOI: 10.1038/s41598-018-33431-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/27/2018] [Indexed: 01/19/2023] Open
Abstract
Clonorchiasis, known as the Chinese liver fluke disease, is caused by Clonorchis sinensis infection with food-borne liver fluke, which is transmitted via snails to freshwater fish and then to human beings or other piscivorous mammals. Clonorchis sinensis infection is mainly related to liver and biliary disorders, especially cholangiocarcinoma, and has an increased human-health impact due to the greater consumption of raw freshwater fish. In this article, we propose a deterministic model to describe the spread of clonorchiasis among human-snail-fish populations and use the model to simulate the data on the numbers of inspected and infected individuals of Foshan City, located in Guangdong Province in the southeast of P.R China, from 1980-2010. Mathematical and numerical analyses of the model are carried out to understand the transmission dynamics of clonorchiasis and explore effective control measures for the local outbreaks of the disease. We find that (i) the transmission of clonorchiasis from cercariae to fish plays a more important role than that from eggs to snails and from fish to humans; (ii) As the cycle of infection-treatment-reinfection continues, it is unlikely that treatment with drugs alone can control and eventually eradicate clonorchiasis. These strongly suggest that a more comprehensive approach needs to include environmental modification in order to break the cercariae-fish transmission cycle, to enhance awareness about the disease, and to improve prevention measures.
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Affiliation(s)
- Ruixia Yuan
- School of Mathematics and Statistics, Central China Normal University, Wuhan, 430079 P. R. China
| | - Jicai Huang
- School of Mathematics and Statistics, Central China Normal University, Wuhan, 430079 P. R. China
| | - Xinan Zhang
- School of Mathematics and Statistics, Central China Normal University, Wuhan, 430079 P. R. China
| | - Shigui Ruan
- Department of Mathematics, University of Miami, Coral Gables, FL 33146 USA
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