Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina

We assessed the distribution of Trypanosoma cruzi infection in peridomestic triatomines collected manually at a district-wide scale in rural villages around Olta, Western Argentina, and typed the isolated strains according to their pathogenicity to laboratory mice. Of 1623 triatomines examined, only...

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Autores principales:	Lauricella, Marta Alicia, Gurtler, Ricardo Esteban
Publicado:	2005
Materias:	Argentina Chagas disease Pathogenicity Surveillance Triatoma garciabesi Triatoma guasayana Triatoma infestans Trypanosoma cruzi article blood culture feces analysis histopathology homogenate kitchen microscopy mouse nonhuman parasite isolation parasite transmission pathogenicity sensitivity analysis Triatoma xenodiagnosis Capra hircus Triatoma eratyrusiformis Triatoma platensis Trypanosoma
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v100_n2_p123_Lauricella http://hdl.handle.net/20.500.12110/paper_00740276_v100_n2_p123_Lauricella
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00740276_v100_n2_p123_Lauricella
record_format	dspace
spelling	paper:paper_00740276_v100_n2_p123_Lauricella2023-06-08T15:06:46Z Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina Lauricella, Marta Alicia Gurtler, Ricardo Esteban Argentina Chagas disease Pathogenicity Surveillance Triatoma garciabesi Triatoma guasayana Triatoma infestans Trypanosoma cruzi Argentina article blood culture feces analysis histopathology homogenate kitchen microscopy mouse nonhuman parasite isolation parasite transmission pathogenicity sensitivity analysis Triatoma Triatoma infestans Trypanosoma cruzi xenodiagnosis Capra hircus Triatoma eratyrusiformis Triatoma garciabesi Triatoma guasayana Triatoma infestans Triatoma platensis Trypanosoma Trypanosoma cruzi We assessed the distribution of Trypanosoma cruzi infection in peridomestic triatomines collected manually at a district-wide scale in rural villages around Olta, Western Argentina, and typed the isolated strains according to their pathogenicity to laboratory mice. Of 1623 triatomines examined, only 14 (0.9%) were infected with T. cruzi based on microscopical examination offeces. The prevalence of T. cruzi infection was 0.8% in Triatoma infestans, 2.3% in T. guasayana, and nil in T. garciabesi, T. platensis, and T. eratyrusiformis. Local transmission occurred in kitchens, store-rooms and goat corrals or nearby, though at very low levels. T. cruzi was detected by at least one parasitological method in 11 (79%) of 14 microscope-positive bugs. Hemoculture was the most sensitive method (67%) followed by culture of organ homogenates, histopathology or xenodiagnosis of inoculated suckling mice (55-58%), and culture of microscope-positive bug feces (46%). The evidence suggests that most of the isolated T. cruzi strains would be myotropic type III. Our study establishes for the first time that peridomestic, microscope-positive T. guasayana nymphs were actually infected with T. cruzi, and may be implicated as a putative secondary vector of T. cruzi in domestic or peridomestic sites. Fil:Lauricella, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gürtler, R.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v100_n2_p123_Lauricella http://hdl.handle.net/20.500.12110/paper_00740276_v100_n2_p123_Lauricella
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Argentina Chagas disease Pathogenicity Surveillance Triatoma garciabesi Triatoma guasayana Triatoma infestans Trypanosoma cruzi Argentina article blood culture feces analysis histopathology homogenate kitchen microscopy mouse nonhuman parasite isolation parasite transmission pathogenicity sensitivity analysis Triatoma Triatoma infestans Trypanosoma cruzi xenodiagnosis Capra hircus Triatoma eratyrusiformis Triatoma garciabesi Triatoma guasayana Triatoma infestans Triatoma platensis Trypanosoma Trypanosoma cruzi
spellingShingle	Argentina Chagas disease Pathogenicity Surveillance Triatoma garciabesi Triatoma guasayana Triatoma infestans Trypanosoma cruzi Argentina article blood culture feces analysis histopathology homogenate kitchen microscopy mouse nonhuman parasite isolation parasite transmission pathogenicity sensitivity analysis Triatoma Triatoma infestans Trypanosoma cruzi xenodiagnosis Capra hircus Triatoma eratyrusiformis Triatoma garciabesi Triatoma guasayana Triatoma infestans Triatoma platensis Trypanosoma Trypanosoma cruzi Lauricella, Marta Alicia Gurtler, Ricardo Esteban Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
topic_facet	Argentina Chagas disease Pathogenicity Surveillance Triatoma garciabesi Triatoma guasayana Triatoma infestans Trypanosoma cruzi Argentina article blood culture feces analysis histopathology homogenate kitchen microscopy mouse nonhuman parasite isolation parasite transmission pathogenicity sensitivity analysis Triatoma Triatoma infestans Trypanosoma cruzi xenodiagnosis Capra hircus Triatoma eratyrusiformis Triatoma garciabesi Triatoma guasayana Triatoma infestans Triatoma platensis Trypanosoma Trypanosoma cruzi
description	We assessed the distribution of Trypanosoma cruzi infection in peridomestic triatomines collected manually at a district-wide scale in rural villages around Olta, Western Argentina, and typed the isolated strains according to their pathogenicity to laboratory mice. Of 1623 triatomines examined, only 14 (0.9%) were infected with T. cruzi based on microscopical examination offeces. The prevalence of T. cruzi infection was 0.8% in Triatoma infestans, 2.3% in T. guasayana, and nil in T. garciabesi, T. platensis, and T. eratyrusiformis. Local transmission occurred in kitchens, store-rooms and goat corrals or nearby, though at very low levels. T. cruzi was detected by at least one parasitological method in 11 (79%) of 14 microscope-positive bugs. Hemoculture was the most sensitive method (67%) followed by culture of organ homogenates, histopathology or xenodiagnosis of inoculated suckling mice (55-58%), and culture of microscope-positive bug feces (46%). The evidence suggests that most of the isolated T. cruzi strains would be myotropic type III. Our study establishes for the first time that peridomestic, microscope-positive T. guasayana nymphs were actually infected with T. cruzi, and may be implicated as a putative secondary vector of T. cruzi in domestic or peridomestic sites.
author	Lauricella, Marta Alicia Gurtler, Ricardo Esteban
author_facet	Lauricella, Marta Alicia Gurtler, Ricardo Esteban
author_sort	Lauricella, Marta Alicia
title	Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
title_short	Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
title_full	Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
title_fullStr	Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
title_full_unstemmed	Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina
title_sort	distribution and pathogenicity of trypanosoma cruzi isolated from peridomestic populations of triatoma infestans and triatoma guasayana from rural western argentina
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v100_n2_p123_Lauricella http://hdl.handle.net/20.500.12110/paper_00740276_v100_n2_p123_Lauricella
work_keys_str_mv	AT lauricellamartaalicia distributionandpathogenicityoftrypanosomacruziisolatedfromperidomesticpopulationsoftriatomainfestansandtriatomaguasayanafromruralwesternargentina AT gurtlerricardoesteban distributionandpathogenicityoftrypanosomacruziisolatedfromperidomesticpopulationsoftriatomainfestansandtriatomaguasayanafromruralwesternargentina
_version_	1768542356399718400

Distribution and pathogenicity of Trypanosoma cruzi isolated from peridomestic populations of Triatoma infestans and Triatoma guasayana from rural Western Argentina

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