Development of a Species-Specific Coproantigen ELISA for Human Taenia solium Taeniasis

Maria-Claudia Guezala Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Silvia Rodriguez Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Humberto Zamora Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Hector H. Garcia Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Armando E. Gonzalez Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Alice Tembo Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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James C. Allan Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Philip S. Craig Universidad Nacional Mayor de San Marcos, School of Veterinary Medicine, Lima, Peru; Instituto de Ciencias Neurológicas, Cysticercosis Unit, Lima, Peru; Cysticercosis Working Group in Peru, Lima, Peru; Universidad Peruana Cayetano Heredia, Department of Microbiology, School of Sciences, Lima, Perú; Cestode Zoonoses Research Group, Biomedical Sciences Research Institute and School of Environment and Life Sciences, University of Salford, Greater Manchester, United Kingdom

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Taenia solium causes human neurocysticercosis and is endemic in underdeveloped countries where backyard pig keeping is common. Microscopic fecal diagnostic methods for human T. solium taeniasis are not very sensitive, and Taenia saginata and Taenia solium eggs are indistinguishable under the light microscope. Coproantigen (CoAg) ELISA methods are very sensitive, but currently only genus (Taenia) specific. This paper describes the development of a highly species-specific coproantigen ELISA test to detect T. solium intestinal taeniasis. Sensitivity was maintained using a capture antibody of rabbit IgG against T. solium adult whole worm somatic extract, whereas species specificity was achieved by utilization of an enzyme-conjugated rabbit IgG against T. solium adult excretory-secretory (ES) antigen. A known panel of positive and negative human fecal samples was tested with this hybrid sandwich ELISA. The ELISA test gave 100% specificity and 96.4% sensitivity for T. solium tapeworm carriers (N = 28), with a J index of 0.96. This simple ELISA incorporating anti-adult somatic and anti-adult ES antibodies provides the first potentially species-specific coproantigen test for human T. solium taeniasis.

Author Notes

  • 1

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  • 3

    Mayta H, Talley A, Gilman RH, Jimenez J, Verastegui M, Ruiz M, Garcia HH, Gonzalez AE, 2000. Differentiating Taenia solium and Taenia saginata infections by simple hematoxylin-eosin staining and PCR-restriction enzyme analysis. J Clin Microbiol 38 :133–137.

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  • 4

    Pawlowski ZS, Allan JC, Meinardi H, 2005. Control measures for taeniosis and cysticercosis. Murrell KD, ed. WHO/FAO/OIE Guidelines for the Surveillance, Prevention and Control of Taeniosis/Cysticercosis. Paris: OIE, 73–92.

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  • 5

    Allan JC, Craig PS, 2006. Coproantigens in taeniasis and echinococcosis. Parasitol Int 55 :S75–S80.

  • 6

    Allan JC, Craig PS, 1989. Coproantigens in gut tapeworms infections: Hymenolepis diminuta in rats. Parasitol Res 76 :68–73.

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  • 11

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  • 13

    Allan JC, Velasquez-Tohom M, Torres-Alvarez R, Yurrita P, Garcia-Noval J, 1996a. Field trial of the coproantigen-based diagnosis of Taenia solium taeniasis by enzyme-linked immunosorbent assay. Am J Trop Med Hyg 54 :352–356.

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  • 19

    Jeri C, Gilman RH, Lescano AG, Mayta H, Ramirez ME, Gonzalez AE, Nazerali R, Garcia HH, 2004. Species identification after treatment for human taeniasis. Lancet 363 :949–959.

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  • 20

    Yamasaki H, Allan JC, Sato MO, Nakao M, Sako Y, Nakaya K, Qiu D, Mamuti W, Craig PS, Ito A, 2004. DNA differential diagnosis of taeniasis and cysticercosis by multiplex PCR. J Clin Microbiol 42 :548–553.

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  • 21

    Wilkins PP, Allan JC, Verastegui M, Acosta M, Eason AG, Garcia HH, Gonzalez AE, Gilman RH, Tsang VWC,1999. Development of a serologic assay to detect Taenia solium taeniasis. Am J Trop Med Hyg 60 :199–204.

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  • 22

    Levine MZ, Calderon JC, Wilkins PP, Lane WS, Asara JM, Hancock K, Gonzalez AE, Garcia HH, Gilman RH, Tsang VCW, 2004. Characterization, cloning, and expression of two diagnostic antigens for Taenia solium tapeworm infection. J Parasitol 90 :631–638.

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  • 23

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    Allan JC, Velasquez-Tohom M, Garcia-Noval J, Torres-Alvarez R, Yurrita P, Fletes C, de Mata F, Soto de Alfaro H, Craig PS, 1996. Epidemiology of intestinal taeniasis in four rural Guatemalan communities. Ann Trop Med Parasitol 90 :157–165.

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