Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts
Background: A question of epidemiological relevance in Chagas disease studies is to understand Trypanosoma cruzi transmission cycles and trace the origins of (re)emerging cases in areas under vector or disease surveillance. Conventional parasitological methods lack sensitivity whereas molecular appr...
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ftconicet:oai:ri.conicet.gov.ar:11336/115949 2023-10-09T21:55:34+02:00 Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts Wehrendt, Diana Patricia Gómez Bravo, Andrea Ramirez Gomez, Juan Carlos Cura, Carolina Inés Pech May, Angélica del Rosario Ramsey, Janine M. Abril, Marcelo Guhl, Felipe Schijman, Alejandro Gabriel application/pdf http://hdl.handle.net/11336/115949 eng eng BioMed Central info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-019-3817-9 info:eu-repo/semantics/altIdentifier/url/https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-019-3817-9 http://hdl.handle.net/11336/115949 Wehrendt, Diana Patricia; Gómez Bravo, Andrea; Ramirez Gomez, Juan Carlos; Cura, Carolina Inés; Pech May, Angélica del Rosario; et al.; Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts; BioMed Central; Parasites and Vectors; 12; 1; 11-2019; 1-9 1756-3305 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ CHAGAS DISEASE INTERNAL AMPLIFICATION STANDARD MAMMALIAN RESERVOIRS MOLECULAR EPIDEMIOLOGY MULTIPLEX QPCR PARASITE LOAD TRYPANOSOMA CRUZI https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1186/s13071-019-3817-9 2023-09-24T18:20:00Z Background: A question of epidemiological relevance in Chagas disease studies is to understand Trypanosoma cruzi transmission cycles and trace the origins of (re)emerging cases in areas under vector or disease surveillance. Conventional parasitological methods lack sensitivity whereas molecular approaches can fill in this gap, provided that an adequate sample can be collected and processed and a nucleic acid amplification method can be developed and standardized. We developed a duplex qPCR assay for accurate detection and quantification of T. cruzi satellite DNA (satDNA) sequence in samples from domestic and sylvatic mammalian reservoirs. The method incorporates amplification of the gene encoding for the interphotoreceptor retinoid-binding protein (IRBP), highly conserved among mammalian species, as endogenous internal amplification control (eIAC), allowing distinction of false negative PCR findings due to inadequate sample conditions, DNA degradation and/or PCR interfering substances. Results: The novel TaqMan probe and corresponding primers employed in this study improved the analytical sensitivity of the assay to 0.01 par.eq/ml, greater than that attained by previous assays for Tc I and Tc IV strains. The assay was tested in 152 specimens, 35 from 15 different wild reservoir species and 117 from 7 domestic reservoir species, captured in endemic regions of Argentina, Colombia and Mexico and thus potentially infected with different parasite discrete typing units. The eIACs amplified in all samples from domestic reservoirs from Argentina and Mexico, such as Canis familiaris, Felis catus, Sus scrofa, Ovis aries, Equus caballus, Bos taurus and Capra hircus with quantification cycles (Cq´s) between 23 and 25. Additionally, the eIACs amplified from samples obtained from wild mammals, such as small rodents Akodon toba, Galea leucoblephara, Rattus rattus, the opossums Didelphis virginiana, D. marsupialis and Marmosa murina, the bats Tadarida brasiliensis, Promops nasutus and Desmodus rotundus, as well as in Conepatus ... Article in Journal/Newspaper Rattus rattus CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Parasites & Vectors 12 1 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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language |
English |
topic |
CHAGAS DISEASE INTERNAL AMPLIFICATION STANDARD MAMMALIAN RESERVOIRS MOLECULAR EPIDEMIOLOGY MULTIPLEX QPCR PARASITE LOAD TRYPANOSOMA CRUZI https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
CHAGAS DISEASE INTERNAL AMPLIFICATION STANDARD MAMMALIAN RESERVOIRS MOLECULAR EPIDEMIOLOGY MULTIPLEX QPCR PARASITE LOAD TRYPANOSOMA CRUZI https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Wehrendt, Diana Patricia Gómez Bravo, Andrea Ramirez Gomez, Juan Carlos Cura, Carolina Inés Pech May, Angélica del Rosario Ramsey, Janine M. Abril, Marcelo Guhl, Felipe Schijman, Alejandro Gabriel Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
topic_facet |
CHAGAS DISEASE INTERNAL AMPLIFICATION STANDARD MAMMALIAN RESERVOIRS MOLECULAR EPIDEMIOLOGY MULTIPLEX QPCR PARASITE LOAD TRYPANOSOMA CRUZI https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Background: A question of epidemiological relevance in Chagas disease studies is to understand Trypanosoma cruzi transmission cycles and trace the origins of (re)emerging cases in areas under vector or disease surveillance. Conventional parasitological methods lack sensitivity whereas molecular approaches can fill in this gap, provided that an adequate sample can be collected and processed and a nucleic acid amplification method can be developed and standardized. We developed a duplex qPCR assay for accurate detection and quantification of T. cruzi satellite DNA (satDNA) sequence in samples from domestic and sylvatic mammalian reservoirs. The method incorporates amplification of the gene encoding for the interphotoreceptor retinoid-binding protein (IRBP), highly conserved among mammalian species, as endogenous internal amplification control (eIAC), allowing distinction of false negative PCR findings due to inadequate sample conditions, DNA degradation and/or PCR interfering substances. Results: The novel TaqMan probe and corresponding primers employed in this study improved the analytical sensitivity of the assay to 0.01 par.eq/ml, greater than that attained by previous assays for Tc I and Tc IV strains. The assay was tested in 152 specimens, 35 from 15 different wild reservoir species and 117 from 7 domestic reservoir species, captured in endemic regions of Argentina, Colombia and Mexico and thus potentially infected with different parasite discrete typing units. The eIACs amplified in all samples from domestic reservoirs from Argentina and Mexico, such as Canis familiaris, Felis catus, Sus scrofa, Ovis aries, Equus caballus, Bos taurus and Capra hircus with quantification cycles (Cq´s) between 23 and 25. Additionally, the eIACs amplified from samples obtained from wild mammals, such as small rodents Akodon toba, Galea leucoblephara, Rattus rattus, the opossums Didelphis virginiana, D. marsupialis and Marmosa murina, the bats Tadarida brasiliensis, Promops nasutus and Desmodus rotundus, as well as in Conepatus ... |
format |
Article in Journal/Newspaper |
author |
Wehrendt, Diana Patricia Gómez Bravo, Andrea Ramirez Gomez, Juan Carlos Cura, Carolina Inés Pech May, Angélica del Rosario Ramsey, Janine M. Abril, Marcelo Guhl, Felipe Schijman, Alejandro Gabriel |
author_facet |
Wehrendt, Diana Patricia Gómez Bravo, Andrea Ramirez Gomez, Juan Carlos Cura, Carolina Inés Pech May, Angélica del Rosario Ramsey, Janine M. Abril, Marcelo Guhl, Felipe Schijman, Alejandro Gabriel |
author_sort |
Wehrendt, Diana Patricia |
title |
Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
title_short |
Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
title_full |
Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
title_fullStr |
Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
title_full_unstemmed |
Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
title_sort |
development and evaluation of a duplex taqman qpcr assay for detection and quantification of trypanosoma cruzi infection in domestic and sylvatic reservoir hosts |
publisher |
BioMed Central |
url |
http://hdl.handle.net/11336/115949 |
geographic |
Argentina |
geographic_facet |
Argentina |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-019-3817-9 info:eu-repo/semantics/altIdentifier/url/https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-019-3817-9 http://hdl.handle.net/11336/115949 Wehrendt, Diana Patricia; Gómez Bravo, Andrea; Ramirez Gomez, Juan Carlos; Cura, Carolina Inés; Pech May, Angélica del Rosario; et al.; Development and evaluation of a duplex TaqMan qPCR assay for detection and quantification of Trypanosoma cruzi infection in domestic and sylvatic reservoir hosts; BioMed Central; Parasites and Vectors; 12; 1; 11-2019; 1-9 1756-3305 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.1186/s13071-019-3817-9 |
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