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Cross-reactivity pattern of Asian and American human gnathostomiasis in western blot assays using crude antigens prepared from Gnathostoma spinigerum and Gnathostoma binucleatum third-stage larvae

Neumayr, Andreas and Ollague, Jose and Bravo, Francisco and Gotuzzo, Eduardo and Jimenez, Pedro and Norton, Scott A. and Doanh, Pham Ngoc and Nawa, Yukifumi and Horii, Yoichiro and Nickel, Beatrice and Marti, Hanspeter. (2016) Cross-reactivity pattern of Asian and American human gnathostomiasis in western blot assays using crude antigens prepared from Gnathostoma spinigerum and Gnathostoma binucleatum third-stage larvae. American journal of tropical medicine and hygiene, 95 (2). pp. 413-416.

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Official URL: http://edoc.unibas.ch/44600/

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Abstract

Gnathostomiasis is a zoonotic parasitosis endemic in many Asian and some Latin American countries. Most human infections are caused by Gnathostoma spinigerum in Asia and Gnathostoma binucleatum in the Americas, and recently, imported cases have been increasing among travelers returning from endemic regions. Confirmation of the clinical diagnosis relies largely on serologic tests, with a G. spinigerum-antigen-based immunoblot currently being the diagnostic method of choice. However, we repeatedly experienced that sera from patients with clinically suspected American gnathostomiasis gave negative results in this assay. Therefore, we used homologous methods to prepare G. spinigerum- and G. binucleatum-antigen-based immunoblot assays, and evaluated the cross-reactivity of the two assays. The results show incomplete cross-reactivity between the two assays: the G. spinigerum-antigen-based immunoblot apparently only detects Asian gnathostomiasis caused by G. spinigerum, whereas the G. binucleatum-antigen-based immunoblot is apparently capable of detecting American as well as Asian gnathostomiasis.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin > Medicines Development (Paris)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medicine (MED) > Medicines Development (Paris)
UniBasel Contributors:Neumayr, Andreas and Marti, Hanspeter and Nickel, Beatrice
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Williams and Wilkins
ISSN:0002-9637
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:08 Dec 2016 15:12
Deposited On:08 Dec 2016 15:12

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