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Laurito M, Ayala AM, Arias-Builes DL, Almirón WR. Improving the DNA Barcode Library of Mosquito Species With New Identifications and Discoveries in North-Central Argentina. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:173-183. [PMID: 34661674 DOI: 10.1093/jme/tjab160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Indexed: 06/13/2023]
Abstract
The family Culicidae is represented by 244 species in Argentina, many of them with epidemiological importance. DNA barcodes are effective tools for identifying mosquito species, for knowing genetic variability, and for establishing phylogenetic relationships. This work aims to explore mosquito diversity employing different species delimitation approaches and to establish formally a DNA barcode library for the Argentinian mosquito fauna. Barcode fragments of 80 specimens of Argentinian mosquitoes of 28 species of the genera Aedeomyia Theobald (Diptera: Culicidae), Anopheles Meigen (Diptera: Culicidae), Coquillettidia Dyar (Diptera: Culicidae), Culex L. (Diptera: Culicidae), Haemagogus Williston (Diptera: Culicidae), Mansonia Blanchard (Diptera: Culicidae), Nyssorhynchus Blanchard (Diptera: Culicidae), Ochlerotatus Lynch-Arribálzaga (Diptera: Culicidae), Psorophora Robinneau-Desvoidy (Diptera: Culicidae) and Uranotaenia Lynch-Arribálzaga (Diptera: Culicidae) were sequenced. Another 82 sequences were obtained from public databases to establish the phylogenetic relationships using Maximum Likelihood and Bayesian Inference, and the species boundaries based on three approaches (ABGD, GMYC, and mPTP). Sixteen of the 28 species sequenced were recovered as monophyletic, of which 12 were also recognized as molecular operational taxonomic units according to the three methodologies. The disparity between morphology and barcode-based identifications could be explained by synonymy, species complexes occurrence, hybridization, incomplete lineage sorting, or the effect of the geographical scale of sampling. Twenty of the 28 sequenced species are new barcodes for Argentina and 11 are the first for science. This increases from 31 to 52 (12.7 to 21.31%) and from six to 10 (28.57 to 47.62%) the number of species and genera, respectively, with barcode sequences in Argentina. New species records are provided.
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Affiliation(s)
- M Laurito
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Avenida Velez Sarsfield 299, X5000JJC, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), Avenida Velez Sarsfield 1611, X5016GCA, Córdoba, Argentina
| | - A M Ayala
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Avenida Velez Sarsfield 299, X5000JJC, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Diversidad y Ecología Animal (IDEA), Avenida Velez Sarsfield 299, X5000JJC, Córdoba, Argentina
| | - D L Arias-Builes
- Centro de Investigación e Innovación Tecnológica (CENIIT), CONICET, Universidad Nacional de La Rioja. Gdor. Luis Vernet and Apostol Felipe, La Rioja, Argentina
| | - W R Almirón
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Avenida Velez Sarsfield 299, X5000JJC, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), Avenida Velez Sarsfield 1611, X5016GCA, Córdoba, Argentina
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Branda MF, Laurito M, Visintin AM, Almirón WR. Gonoactivity of Culex (Culex) (Diptera: Culicidae) Mosquitoes During Winter in Temperate Argentina. JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:1454-1458. [PMID: 33479774 DOI: 10.1093/jme/tjaa295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 06/12/2023]
Abstract
The subgenus Culex L. includes species involved in summer-autumn arbovirus transmission but studies during winter are scarce in temperate Argentina. Female specimens were collected host-seeking at dry-ice-baited traps during autumn-winter-spring at two sites in Córdoba City during 2016 and 2017. The specimens were morphologically identified and dissected to determine the follicular developmental stage (gonotrophic activity). Females with advanced follicular stages (≥III) were subjected to molecular procedures to confirm or re-identify previous morphological identification. Five species (Culex apicinus Philippi (Diptera: Culicidae), Culex dolosus (Lynch-Arribálzaga) (Diptera: Culicidae), Culex maxi Dyar (Diptera: Culicidae), Culex pipiens pipiens L. (Diptera: Culicidae), and Culex quinquefasciatus Say (Diptera: Culicidae)) were collected and found gonoactive during winter; showing that a high proportion of Culex (Culex) females remain reproductively active during the unfavorable season for mosquito populations. Among them, it is worth noting the collection of Cx. quinquefasciatus, vector of the St. Louis encephalitis virus (endemic in the city), a specimen of Cx. p. pipiens, and a hybrid of Cx. p. pipiens/Cx. quinquefasciatus (during autumn). The study of this community during winter should continue because a high gonoactive female proportion with advanced follicular stages was found: 29.12 and 13.07% in 2016 and 2017, respectively. Local studies such as this one provide evidence about ornithophilic Culex species with active year-round life cycles, species that could favor arbovirus overwintering.
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Affiliation(s)
- María Florencia Branda
- Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Magdalena Laurito
- Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), Córdoba, Argentina
| | - Andrés Mario Visintin
- Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), Córdoba, Argentina
- Instituto de Biología de la Conservación y Paleobiología (IBiCoPa), Centro de Investigación e Innovación Tecnológica (CENIIT), Universidad Nacional de La Rioja, La Rioja, Argentina
| | - Walter Ricardo Almirón
- Facultad de Ciencias Exactas, Físicas y Naturales, Centro de Investigaciones Entomológicas de Córdoba, Universidad Nacional de Córdoba, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), Córdoba, Argentina
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Pixuna virus modifies host cell cytoskeleton to secure infection. Sci Rep 2017; 7:5757. [PMID: 28720756 PMCID: PMC5515931 DOI: 10.1038/s41598-017-05983-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/31/2017] [Indexed: 11/08/2022] Open
Abstract
Pixuna virus (PIXV) is an enzootic member of the Venezuelan Equine Encephalitis Virus complex and belongs to the New World cluster of alphaviruses. Herein we explore the role of the cellular cytoskeleton during PIXV replication. We first identified that PIXV undergoes an eclipse phase consisting of 4 h followed by 20 h of an exponential phase in Vero cells. The infected cells showed morphological changes due to structural modifications in actin microfilaments (MFs) and microtubules (MTs). Cytoskeleton-binding agents, that alter the architecture and dynamics of MFs and MTs, were used to study the role of cytoskeleton on PIXV replication. The virus production was significantly affected (p < 0.05) after treatment with paclitaxel or nocodazole due to changes in the MTs network. Interestingly, disassembly of MFs with cytochalasin D, at early stage of PIXV replication cycle, significantly increased the virus yields in the extracellular medium (p < 0.005). Furthermore, the stabilization of actin network with jasplakinolide had no effect on virus yields. Our results demonstrate that PIXV relies not only on intact MTs for the efficient production of virus, but also on a dynamic actin network during the early steps of viral replication.
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Marcondes CB, Contigiani M, Gleiser RM. Emergent and Reemergent Arboviruses in South America and the Caribbean: Why So Many and Why Now? JOURNAL OF MEDICAL ENTOMOLOGY 2017; 54:509-532. [PMID: 28399216 DOI: 10.1093/jme/tjw209] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 10/20/2016] [Indexed: 06/07/2023]
Abstract
Varios arbovirus han emergido y/o reemergido en el Nuevo Mundo en las últimas décadas. Los virus Zika y chikungunya, anteriormente restringidos a África y quizás Asia, invadieron el continente, causando gran preocupación; además siguen ocurriendo brotes causados por el virus dengue en casi todos los países, con millones de casos por año. El virus West Nile invadió rápidamente América del Norte, y ya se han encontrado casos en América Central y del Sur. Otros arbovirus, como Mayaro y el virus de la encefalitis equina del este han aumentado su actividad y se han encontrado en nuevas regiones. Se han documentado cambios en la patogenicidad de algunos virus que conducen a enfermedades inesperadas. Una fauna diversa de mosquitos, cambios climáticos y en la vegetación, aumento de los viajes, y urbanizaciones no planificadas que generan condiciones adecuadas para la proliferación de Aedes aegypti (L.), Culex quinquefasciatus Say y otros mosquitos vectores, se han combinado para influir fuertemente en los cambios en la distribución y la incidencia de varios arbovirus. Se enfatiza la necesidad de realizar estudios exhaustivos de la fauna de mosquitos y modificaciones de las condiciones ambientales, sobre todo en las zonas urbanas fuertemente influenciadas por factores sociales, políticos y económicos.
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Affiliation(s)
- Carlos Brisola Marcondes
- Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Marta Contigiani
- Emeritus Professor, Instituto de Virologia "Dr. J. M. Vanella", Enfermera Gordillo Gomez s/n, Ciudad Universitaria, National University of Córdoba, Córdoba, Argentina
| | - Raquel Miranda Gleiser
- Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales (CREAN) - Instituto Multidisciplinario de Biología Vegetal (IMBIV), Universidad Nacional de Córdoba (UNC) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
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Discrimination of four Culex (Culex) species from the Neotropics based on geometric morphometrics. ZOOMORPHOLOGY 2015. [DOI: 10.1007/s00435-015-0271-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pisano MB, Torres C, Ré VE, Farías AA, Sánchez Seco MP, Tenorio A, Campos R, Contigiani MS. Genetic and evolutionary characterization of Venezuelan equine encephalitis virus isolates from Argentina. INFECTION GENETICS AND EVOLUTION 2014; 26:72-9. [PMID: 24833218 DOI: 10.1016/j.meegid.2014.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 04/29/2014] [Accepted: 05/06/2014] [Indexed: 11/27/2022]
Abstract
Venezuelan equine encephalitis viruses (VEEV) are emerging pathogens of medical and veterinary importance circulating in America. Argentina is a country free from epizootic VEEV activity, with circulation of enzootic strains belonging to Rio Negro virus (RNV; VEEV subtype VI) and Pixuna virus (PIXV, VEEV subtype IV). In this work, we aim to report the sequencing and phylogenetic analyses of all Argentinean VEE viruses, including 7 strains previously isolated from mosquitoes in 1980, 5 sequences obtained from rodents in 1991 and 11 sequences amplified from mosquitoes between 2003 and 2005. Two genomic regions, corresponding to the non-structural protein 4 (nsP4) and the protein E3/E2 (PE2) genes were analyzed, but only 8 samples could be amplified in the last one (longer and more variable fragment of 702 bp). For both genomic fragments, phylogenetic trees showed the absence of lineages within RNV group, and a close genetic relationship between Argentinean strains and the prototype strain BeAr35645 for PIXV clade. The analysis of nsP4 gene opens the possibility to propose a possible geographic clustering of strains within PIXV group (Argentina and Brazil). Coalescent analysis performed on RNV sequences suggested a common ancestor of 58.3 years (with a 95% highest posterior density [HPD] interval of 16.4-345.7) prior to 1991 and inferred a substitution rate of 9.8×10(-5)substitutions/site/year, slightly lower than other enzootic VEE viruses. These results provide, for the first time, information about genetic features and variability of all VEEVs detected in Argentina, creating a database that will be useful for future detections in our country. This is particularly important for RNV, which has indigenous circulation.
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Affiliation(s)
- María Belén Pisano
- Instituto de Virología "Dr. J.M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba (UNC), Enfermera Gordillo Gómez s/n, Ciudad Universitaria, X5016 Córdoba, Argentina.
| | - Carolina Torres
- Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires (UBA), Junín 956, 4° piso, C1113AAD Buenos Aires, Argentina
| | - Viviana Elizabeth Ré
- Instituto de Virología "Dr. J.M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba (UNC), Enfermera Gordillo Gómez s/n, Ciudad Universitaria, X5016 Córdoba, Argentina
| | - Adrián Alejandro Farías
- Instituto de Virología "Dr. J.M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba (UNC), Enfermera Gordillo Gómez s/n, Ciudad Universitaria, X5016 Córdoba, Argentina
| | - María Paz Sánchez Seco
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera Pozuelo Km 2, E28220 Majadahonda, Madrid, Spain
| | - Antonio Tenorio
- Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera Pozuelo Km 2, E28220 Majadahonda, Madrid, Spain
| | - Rodolfo Campos
- Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires (UBA), Junín 956, 4° piso, C1113AAD Buenos Aires, Argentina
| | - Marta Silvia Contigiani
- Instituto de Virología "Dr. J.M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba (UNC), Enfermera Gordillo Gómez s/n, Ciudad Universitaria, X5016 Córdoba, Argentina
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Pisano MB, Oria G, Beskow G, Aguilar J, Konigheim B, Cacace ML, Aguirre L, Stein M, Contigiani MS. Venezuelan equine encephalitis viruses (VEEV) in Argentina: serological evidence of human infection. PLoS Negl Trop Dis 2013; 7:e2551. [PMID: 24349588 PMCID: PMC3861189 DOI: 10.1371/journal.pntd.0002551] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 10/07/2013] [Indexed: 11/19/2022] Open
Abstract
Venezuelan equine encephalitis viruses (VEEV) are responsible for human diseases in the Americas, producing severe or mild illness with symptoms indistinguishable from dengue and other arboviral diseases. For this reason, many cases remain without certain diagnosis. Seroprevalence studies for VEEV subtypes IAB, ID, IF (Mosso das Pedras virus; MDPV), IV (Pixuna virus; PIXV) and VI (Rio Negro virus; RNV) were conducted in persons from Northern provinces of Argentina: Salta, Chaco and Corrientes, using plaque reduction neutralization test (PRNT). RNV was detected in all studied provinces. Chaco presented the highest prevalence of this virus (14.1%). Antibodies against VEEV IAB and -for the first time- against MDPV and PIXV were also detected in Chaco province. In Corrientes, seroprevalence against RNV was 1.3% in the pediatric population, indicating recent infections. In Salta, this was the first investigation of VEEV members, and antibodies against RNV and PIXV were detected. These results provide evidence of circulation of many VEE viruses in Northern Argentina, showing that surveillance of these infectious agents should be intensified. Venezuelan equine encephalitis viruses (VEEV) are responsible for human diseases in the Americas. They produce severe or mild illnesses with symptoms indistinguishable from dengue and other arboviral diseases; for this reason, many cases remain undiagnosed. We detected neutralizing antibodies (NTAbs) against VEEV IAB, VEEV ID, MDPV (VEEV subtype IF), PIXV (VEEV subtype IV) and RNV (VEEV subtype VI) in human serum samples of Northern provinces of Argentina. Chaco province showed presence of NTAbs against VEEV IAB, MDPV, PIXV and RNV. In Corrientes province, we detected NTAbs against RNV in a pediatric population. NTAbs against PIXV and RNV were also detected in Salta province. These findings demonstrated the circulation of many VEEV strains in Northern Argentina and underscore the need for surveillance of dengue like illness in this region.
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Affiliation(s)
- María Belén Pisano
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Enfermera Gordillo Gómez s/n, Ciudad Universitaria, Córdoba, Argentina
- * E-mail:
| | - Griselda Oria
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Chaco, Argentina
| | - Geraldine Beskow
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Chaco, Argentina
| | - Javier Aguilar
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Enfermera Gordillo Gómez s/n, Ciudad Universitaria, Córdoba, Argentina
| | - Brenda Konigheim
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Enfermera Gordillo Gómez s/n, Ciudad Universitaria, Córdoba, Argentina
| | | | - Luis Aguirre
- Hospital Dante Tardelli, Pampa del Indio, Chaco, Argentina
| | - Marina Stein
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Chaco, Argentina
| | - Marta Silvia Contigiani
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Enfermera Gordillo Gómez s/n, Ciudad Universitaria, Córdoba, Argentina
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Díaz-Nieto LM, Maciá A, Parisi G, Farina JL, Vidal-Domínguez ME, Perotti MA, Berón CM. Distribution of mosquitoes in the south east of Argentina and first report on the analysis based on 18S rDNA and COI sequences. PLoS One 2013; 8:e75516. [PMID: 24098700 PMCID: PMC3787072 DOI: 10.1371/journal.pone.0075516] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 08/14/2013] [Indexed: 11/19/2022] Open
Abstract
Although Mar del Plata is the most important city on the Atlantic coast of Argentina, mosquitoes inhabiting such area are almost uncharacterized. To increase our knowledge in their distribution, we sampled specimens of natural populations. After the morphological identification based on taxonomic keys, sequences of DNA from small ribosomal subunit (18S rDNA) and cytochrome c oxidase I (COI) genes were obtained from native species and the phylogenetic analysis of these sequences were done. Fourteen species from the genera Uranotaenia, Culex, Ochlerotatus and Psorophora were found and identified. Our 18S rDNA and COI-based analysis indicates the relationships among groups at the supra-species level in concordance with mosquito taxonomy. The introduction and spread of vectors and diseases carried by them are not known in Mar del Plata, but some of the species found in this study were reported as pathogen vectors.
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Affiliation(s)
- Leonardo M. Díaz-Nieto
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC), CONICET, Mar del Plata, Argentina
| | - Arnaldo Maciá
- División Entomología, Facultad de Ciencias Naturales y Museo Universidad Nacional de La Plata, La Plata, Argentina
| | - Gustavo Parisi
- Departamento de Ciência y Tecnología, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| | - Juan L. Farina
- Area Entomología, Museo Municipal de Ciencias Naturales "Lorenzo Scaglia", Mar del Plata, Argentina
| | - María E. Vidal-Domínguez
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC), CONICET, Mar del Plata, Argentina
| | - M. Alejandra Perotti
- Ecology and Evolutionary Biology Section, School of Biological Sciences, University of Reading, Reading, Berkshire, United Kingdom
| | - Corina M. Berón
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC), CONICET, Mar del Plata, Argentina
- * E-mail:
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Pisano MB, Spinsanti LI, Díaz LA, Farías AA, Almirón WR, Ré VE, Contigiani MS. First detection of Rio Negro virus (Venezuelan equine encephalitis complex subtype VI) in Córdoba, Argentina. Mem Inst Oswaldo Cruz 2012; 107:125-8. [PMID: 22310545 DOI: 10.1590/s0074-02762012000100017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 11/08/2011] [Indexed: 05/26/2023] Open
Abstract
Rio Negro virus (RNV) (Venezuelan equine encephalitis subtype VI) circulates only in Argentina; in northern provinces, isolates have been obtained from mosquitoes and rodents since 1980 and have been associated with acute febrile illness in humans. However, no studies of RNV have been performed in the central area of the country. We carried out molecular and serological detection of RNV in Córdoba, a province of the central part of the country, in mosquitoes and humans, respectively. One mosquito pool tested positive for alphavirus RNA by reverse transcriptase-nested polymerase chain reaction (RT-nested PCR). Subsequent sequencing determined that this alphavirus grouped with RNV. Serological studies detected antibodies to RNV in one human serum sample, which was obtained during the same period that RNV was detected using the aforementioned molecular methods. This is the first report of RNV circulation in the central area of Argentina, indicating an expansion of its original distribution. These results highlight the importance of strengthening surveillance procedures in endemic areas, as well as in new regions where RNV may emerge.
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Affiliation(s)
- María Belén Pisano
- Instituto de Virología Dr JM Vanella, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina.
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Dantur Juri MJ, Stein M, Rossi GC, Navarro JC, Zaidenberg M, Sallum MAM. New records of mosquitoes from northwestern Argentina. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2012; 28:111-113. [PMID: 22894121 DOI: 10.2987/12-6221r.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Eleven mosquito species, namely Aedes hastatus, Ae. fulvus, Coquillettidia albicosta, Cq. juxtamansonia, Culex aliciae, Cx. delpontei, Cx. oedipus, Cx. pedroi, Mansonia flaveola, Uranotaenia leucoptera, and Wyeomyia oblita, are recorded for the first time from northwestern Argentina. In addition, 3 species, Cx. brethesi, Limatus durhami, and Ur. nataliae, are reported for the first time from Salta Province. These records extend the geographical distribution of these 3 species to Salta Province. This study also extends the geographical distributions of Cq. nigricans, Cx. chidesteri, and Ma. humeralis to Jujuy Province and of Ae. meprai, Ae. milleri, Ae. oligopistus, Cx. brethesi, Cx. fernandezi, and Cx. tatoi to Tucumán Province.
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Affiliation(s)
- María J Dantur Juri
- Instituto Superior de Entomología Dr. Abraham Willink, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, CP 4000 Tucumán, Argentina
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Specific detection of all members of the Venezuelan Equine Encephalitis complex: development of a RT-Nested PCR. J Virol Methods 2012; 186:203-6. [PMID: 22609888 DOI: 10.1016/j.jviromet.2012.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 05/04/2012] [Accepted: 05/10/2012] [Indexed: 11/21/2022]
Abstract
Venezuelan Equine Encephalitis (VEE) complex belongs to alphavirus genus in the family Togaviridae. Several species of this complex are pathogenic to humans. VEE infections can produce severe or mild disease, and many cases remain undiagnosed. A specific and sensitive reverse transcriptase nested polymerase chain reaction (RT-Nested PCR) method was developed for the detection of all VEE subtypes, including Rio Negro Virus (RNV) (subtype VI), which circulates only in Argentina. Degenerated primers were designed and thermal cycling parameters were standardized. This technique is suitable for rapid and specific detection of these viruses, and may be useful for diagnosis and surveillance.
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