Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso

Detalhes bibliográficos
Autor(a) principal: Serra, Otacília Pereira
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFMT
Texto Completo: http://ri.ufmt.br/handle/1/694
Resumo: Arbovirus are transmitted by hematophagous arthropods, posing a public health issue in tropical areas. The aim of this study was to investigate the diversity of culicidae and their frequency of infection by arboviruses from Alphavirus and Flavivirus genus in Cuiabá, MT. To achieve that, culicids were captured with Nasci aspirators and hand net between January and April 2013 in three locations of 200 censitary sectors randomly defined. The specimens were identified using the Forattini dichotomy key, allocated in pools (1-20 mosquitoes), according to sex, species, day and place of capture, and stored at -80˚C. Female pools were subjected to total RNA and DNA extraction and to multiplex semi-nested-RT-PCR for five alphaviruses and 11 flaviviruses and Nested-PCR for Culex (Cx.) quinquefasciatus identification. The pools positive for SLEV, DENV-1, -4 and MAYV were subjected to single RT-PCR and nucleotide sequencing. MAYVpositive pools were inoculated in Vero cells and subjected to RT-PCR for the E1 envelope gene of alphaviruses. Pools positive for flaviviruses were inoculated in C6/36 cells. The minimum infection rate (MIR) was calculated. 11,090 mosquitoes were captured, 4,556 females belonging to 14 species, comprising 610 pools, 171 pools of Aedes (Ae.) aegypti specimens; 1 Ae. albopictus; 1 Aedes sp.; 5 Cx. bidens/interfor; 1 Cx. spinosus; 403 Cx. quinquefasciatus; 1 Galindomyia sp.; 6 Limatus sp.; 2 Mansonia wilsoni; 5 Psorophora sp.; 1 Ps. ciliata; 11 Ps. varipes/albigenu; 1 Sabethes chloropterus e 1 Uranotaenia sp. Among them, 1/171 (MIR=0.92) Ae. aegypti pool was positive for DENV-1 and 1/403 (MIR=0.3) Cx. quinquefasciatus for SLEV genotype V-A. For MAYV, 12/403 (MIR=3.5) Cx. quinquefasciatus, 4/171 (MIR=3.67) Ae. aegypti were positive, five of them were also infected by DENV-4. A DNA product with 1.3 kb obtained from three pools positive for MAYV with the protocol for the envelope gene resulted in unspecific nucleotide sequences. MAYV was isolated from two pools, both containing two non-engorged females of Ae. aegypti (#958) and Cx. quinquefasciatus (#489). DENV-4 was detected in 58/171 (MIR=53.35) Ae. aegytpi, 105/403 (MIR=30,65) Cx. quinquefasciatus, 2/5 (MIR=400) Psorophora sp., 2/11 (MIR=142.85) Ps. varipes/albigenu, 1/1 (MIR= 1000) Sabethes chloropterus, 2/5 (MIR=285.7) Cx. bidens/interfor and 1/1 (MIR=1000) Aedes sp. DENV-4 was isolated from two pools containing three (#329) and 16 (#806) non-engorged females of Cx. quinquefasciatus. The SLEV, MAYV and the four DENV serotypes were identified in patients suspected of harboring dengue infection in Cuiabá in previous studies of the Virology Laboratory. Experimentally, Culex and Aedes spp. are competent vectors for MAYV. The identification of the virus in nonengorged females suggests these species may be involved in the urban cycle of MAYV in Cuiabá. Among the DENV serotypes, only DENV-1 and DENV-4 were identified in culicids captured in the city. DENV-4 has been responsible for major outbreaks in MT since 2012. The identification of DENV-4 in several mosquito species might be resultant either from natural infection or hematophagy in humans, since several of these pools presented engorged females. Cuiabá presents a favorable ecosystem for the occurrence of arboviruses and vector proliferation. Studies involving entomological and virological surveillance are important to estimate the epidemiological situation of arboviruses in the state.
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spelling Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato GrossoDengueMayaroEncefalite de Saint LouisVigilância entomológicaVetores hematófagosCNPQ::CIENCIAS DA SAUDEDengueMayaroSaint Louis encephalitisEntomological surveillanceHematophagous vectorsArbovirus are transmitted by hematophagous arthropods, posing a public health issue in tropical areas. The aim of this study was to investigate the diversity of culicidae and their frequency of infection by arboviruses from Alphavirus and Flavivirus genus in Cuiabá, MT. To achieve that, culicids were captured with Nasci aspirators and hand net between January and April 2013 in three locations of 200 censitary sectors randomly defined. The specimens were identified using the Forattini dichotomy key, allocated in pools (1-20 mosquitoes), according to sex, species, day and place of capture, and stored at -80˚C. Female pools were subjected to total RNA and DNA extraction and to multiplex semi-nested-RT-PCR for five alphaviruses and 11 flaviviruses and Nested-PCR for Culex (Cx.) quinquefasciatus identification. The pools positive for SLEV, DENV-1, -4 and MAYV were subjected to single RT-PCR and nucleotide sequencing. MAYVpositive pools were inoculated in Vero cells and subjected to RT-PCR for the E1 envelope gene of alphaviruses. Pools positive for flaviviruses were inoculated in C6/36 cells. The minimum infection rate (MIR) was calculated. 11,090 mosquitoes were captured, 4,556 females belonging to 14 species, comprising 610 pools, 171 pools of Aedes (Ae.) aegypti specimens; 1 Ae. albopictus; 1 Aedes sp.; 5 Cx. bidens/interfor; 1 Cx. spinosus; 403 Cx. quinquefasciatus; 1 Galindomyia sp.; 6 Limatus sp.; 2 Mansonia wilsoni; 5 Psorophora sp.; 1 Ps. ciliata; 11 Ps. varipes/albigenu; 1 Sabethes chloropterus e 1 Uranotaenia sp. Among them, 1/171 (MIR=0.92) Ae. aegypti pool was positive for DENV-1 and 1/403 (MIR=0.3) Cx. quinquefasciatus for SLEV genotype V-A. For MAYV, 12/403 (MIR=3.5) Cx. quinquefasciatus, 4/171 (MIR=3.67) Ae. aegypti were positive, five of them were also infected by DENV-4. A DNA product with 1.3 kb obtained from three pools positive for MAYV with the protocol for the envelope gene resulted in unspecific nucleotide sequences. MAYV was isolated from two pools, both containing two non-engorged females of Ae. aegypti (#958) and Cx. quinquefasciatus (#489). DENV-4 was detected in 58/171 (MIR=53.35) Ae. aegytpi, 105/403 (MIR=30,65) Cx. quinquefasciatus, 2/5 (MIR=400) Psorophora sp., 2/11 (MIR=142.85) Ps. varipes/albigenu, 1/1 (MIR= 1000) Sabethes chloropterus, 2/5 (MIR=285.7) Cx. bidens/interfor and 1/1 (MIR=1000) Aedes sp. DENV-4 was isolated from two pools containing three (#329) and 16 (#806) non-engorged females of Cx. quinquefasciatus. The SLEV, MAYV and the four DENV serotypes were identified in patients suspected of harboring dengue infection in Cuiabá in previous studies of the Virology Laboratory. Experimentally, Culex and Aedes spp. are competent vectors for MAYV. The identification of the virus in nonengorged females suggests these species may be involved in the urban cycle of MAYV in Cuiabá. Among the DENV serotypes, only DENV-1 and DENV-4 were identified in culicids captured in the city. DENV-4 has been responsible for major outbreaks in MT since 2012. The identification of DENV-4 in several mosquito species might be resultant either from natural infection or hematophagy in humans, since several of these pools presented engorged females. Cuiabá presents a favorable ecosystem for the occurrence of arboviruses and vector proliferation. Studies involving entomological and virological surveillance are important to estimate the epidemiological situation of arboviruses in the state.CAPESFAPEMATArbovírus são transmitidos por artrópodes hematófagos, representando um problema de saúde pública em áreas tropicais. O objetivo deste estudo foi investigar a diversidade de espécies de culicídeos e sua frequência de infecção por Alphavirus e Flavivirus em Cuiabá, MT. Foram realizadas capturas com aspirador de Nasci e puçá entre janeiro e abril de 2013 em três locais de 200 setores censitários, definidos aleatoriamente. Os culicídeos foram identificados com chave dicotômica de Forattini, alocados em pools (1-20 mosquitos) segundo sexo, espécie, data, local de coleta e armazenados a -80˚C. Pools de fêmeas foram submetidos à extração de RNA e DNA total, à multiplex semi-nested-RT-PCR para cinco alphavírus e 11 flavivírus e Nested- PCR para identificação de Culex (Cx.) quinquefasciatus. Amostras positivas para SLEV, DENV-1, -4 e MAYV foram submetidas a single RT-PCR e sequenciamento nucleotídico. Pools positivos para o MAYV foram inoculados em células Vero e submetidos a RT-PCR para o gene de envelope E1 dos alphavirus. Pools positivos para flavivirus foram inoculados em células C6/36 (Flavivirus). Calculou-se a taxa de infecção mínima (MIR). Foram capturados 11.090 mosquitos, 4.556 fêmeas de 14 espécies, perfazendo 610 pools. Foram analisados 171 pools de Aedes (Ae.) aegypti; 1 Ae. albopictus; 1 Aedes sp.; 5 Cx. bidens/interfor; 1 Cx. spinosus; 403 Cx. quinquefasciatus; 1 Galindomyia sp; 6 Limatus sp; 2 Mansonia wilsoni; 5 Psorophora (Ps.) sp; 1 Ps. ciliata; 11 Ps. varipes/albigenu; 1 Sabethes chloropterus e 1 Uranotaenia sp. Encontrou-se 1/171 (MIR=0,92) pool de Ae. aegypti positivo para DENV-1; 1/403 (MIR= 0,2) Cx. quinquefasciatus para SLEV genótipo V-A, 12/403 (MIR=3,5) de Cx. quinquefasciatus, 4/171 (MIR=3,67) de Ae. aegypti para MAYV; destes, cinco pools apresentaram co-infecção com DENV-4. Um produto de 1,3 kb obtido com o protocolo para o gene de envelope de três pools positivos para o MAYV resultou em sequências nucleotidicas inespecíficas. O MAYV foi isolado de dois pools contendo duas fêmeas não ingurgitadas de Ae. aegypti (#958) e duas de Cx. quinquefasciatus (#489). Positividade para DENV-4 foi identificada em 58/171 (MIR=53,35) Ae. aegytpi, 105/403 (MIR=30,65) Cx. quinquefasciatus, 2/5 (MIR=400) Psorophora sp, 2/11 (MIR=142,85) Ps. varipes/albigenu, 1/1 (MIR= 1000) Sabethes chloropterus, 2/5 (MIR=285.7) Cx. bidens/interfor e 1/1 (MIR=1000) Aedes sp. O DENV-4 foi isolado de dois pools contendo três (#329) e 16 (#806) fêmeas de Cx. quinquefasciatus não ingurgitadas. O SLEV, MAYV e os sorotipos do DENV foram identificados em pacientes com suspeita de dengue na cidade de Cuiabá em estudos prévios do Laboratório de Virologia. Experimentalmente, Culex e Aedes spp. são vetores competentes do MAYV. A identificação do vírus em fêmeas não ingurgitadas sugere que estas espécies podem estar envolvidas no ciclo urbano do MAYV em Cuiabá. Dentre os sorotipos do DENV, somente o DENV-1 e o DENV-4 foram identificados em culicídeos. O DENV-4 tem produzido importantes epidemias em MT desde 2012. A positividade para DENV-4 em diferentes espécies de culicídeos pode ser decorrente de infecção natural ou da hematofagia em humanos, pois muitos destes pools apresentavam fêmeas ingurgitadas. Cuiabá possui ecossistema favorável para a ocorrência de arboviroses e proliferação de vetores. Estudos envolvendo vigilância entomológica e virológica são importantes para estimar a situação epidemiológica dos arbovírus no estado.Universidade Federal de Mato GrossoBrasilFaculdade de Medicina (FM)UFMT CUC - CuiabáPrograma de Pós-Graduação em Ciências da SaúdeSlhessarenko, Renata Dezengrinihttp://lattes.cnpq.br/3790088995387532Slhessarenko, Renata Dezengrini006.990.439-13http://lattes.cnpq.br/3790088995387532Pavoni, Juliana Helena Chavez020.542.699-99http://lattes.cnpq.br/4639384064208317006.990.439-13Dantas, Elisangela Santana Oliveira594.845.781-87http://lattes.cnpq.br/0121545012355271Miyazaki , Rosina Djunko231.209.759-15http://lattes.cnpq.br/5247423488004126Serra, Otacília Pereira2018-04-27T17:52:07Z20152018-04-27T17:52:07Z2015-04-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSERRA, Otacília Pereira. Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso. 2015. xiv, 88 f. Dissertação (Mestrado em Ciências da Saúde) - Universidade Federal de Mato Grosso, Faculdade de Medicina, Cuiabá, 2015.http://ri.ufmt.br/handle/1/694porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMTinstname:Universidade Federal de Mato Grosso (UFMT)instacron:UFMT2018-04-29T07:05:10Zoai:localhost:1/694Repositório InstitucionalPUBhttp://ri.ufmt.br/oai/requestjordanbiblio@gmail.comopendoar:2018-04-29T07:05:10Repositório Institucional da UFMT - Universidade Federal de Mato Grosso (UFMT)false
dc.title.none.fl_str_mv Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
title Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
spellingShingle Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
Serra, Otacília Pereira
Dengue
Mayaro
Encefalite de Saint Louis
Vigilância entomológica
Vetores hematófagos
CNPQ::CIENCIAS DA SAUDE
Dengue
Mayaro
Saint Louis encephalitis
Entomological surveillance
Hematophagous vectors
title_short Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
title_full Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
title_fullStr Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
title_full_unstemmed Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
title_sort Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso
author Serra, Otacília Pereira
author_facet Serra, Otacília Pereira
author_role author
dc.contributor.none.fl_str_mv Slhessarenko, Renata Dezengrini
http://lattes.cnpq.br/3790088995387532
Slhessarenko, Renata Dezengrini
006.990.439-13
http://lattes.cnpq.br/3790088995387532
Pavoni, Juliana Helena Chavez
020.542.699-99
http://lattes.cnpq.br/4639384064208317
006.990.439-13
Dantas, Elisangela Santana Oliveira
594.845.781-87
http://lattes.cnpq.br/0121545012355271
Miyazaki , Rosina Djunko
231.209.759-15
http://lattes.cnpq.br/5247423488004126
dc.contributor.author.fl_str_mv Serra, Otacília Pereira
dc.subject.por.fl_str_mv Dengue
Mayaro
Encefalite de Saint Louis
Vigilância entomológica
Vetores hematófagos
CNPQ::CIENCIAS DA SAUDE
Dengue
Mayaro
Saint Louis encephalitis
Entomological surveillance
Hematophagous vectors
topic Dengue
Mayaro
Encefalite de Saint Louis
Vigilância entomológica
Vetores hematófagos
CNPQ::CIENCIAS DA SAUDE
Dengue
Mayaro
Saint Louis encephalitis
Entomological surveillance
Hematophagous vectors
description Arbovirus are transmitted by hematophagous arthropods, posing a public health issue in tropical areas. The aim of this study was to investigate the diversity of culicidae and their frequency of infection by arboviruses from Alphavirus and Flavivirus genus in Cuiabá, MT. To achieve that, culicids were captured with Nasci aspirators and hand net between January and April 2013 in three locations of 200 censitary sectors randomly defined. The specimens were identified using the Forattini dichotomy key, allocated in pools (1-20 mosquitoes), according to sex, species, day and place of capture, and stored at -80˚C. Female pools were subjected to total RNA and DNA extraction and to multiplex semi-nested-RT-PCR for five alphaviruses and 11 flaviviruses and Nested-PCR for Culex (Cx.) quinquefasciatus identification. The pools positive for SLEV, DENV-1, -4 and MAYV were subjected to single RT-PCR and nucleotide sequencing. MAYVpositive pools were inoculated in Vero cells and subjected to RT-PCR for the E1 envelope gene of alphaviruses. Pools positive for flaviviruses were inoculated in C6/36 cells. The minimum infection rate (MIR) was calculated. 11,090 mosquitoes were captured, 4,556 females belonging to 14 species, comprising 610 pools, 171 pools of Aedes (Ae.) aegypti specimens; 1 Ae. albopictus; 1 Aedes sp.; 5 Cx. bidens/interfor; 1 Cx. spinosus; 403 Cx. quinquefasciatus; 1 Galindomyia sp.; 6 Limatus sp.; 2 Mansonia wilsoni; 5 Psorophora sp.; 1 Ps. ciliata; 11 Ps. varipes/albigenu; 1 Sabethes chloropterus e 1 Uranotaenia sp. Among them, 1/171 (MIR=0.92) Ae. aegypti pool was positive for DENV-1 and 1/403 (MIR=0.3) Cx. quinquefasciatus for SLEV genotype V-A. For MAYV, 12/403 (MIR=3.5) Cx. quinquefasciatus, 4/171 (MIR=3.67) Ae. aegypti were positive, five of them were also infected by DENV-4. A DNA product with 1.3 kb obtained from three pools positive for MAYV with the protocol for the envelope gene resulted in unspecific nucleotide sequences. MAYV was isolated from two pools, both containing two non-engorged females of Ae. aegypti (#958) and Cx. quinquefasciatus (#489). DENV-4 was detected in 58/171 (MIR=53.35) Ae. aegytpi, 105/403 (MIR=30,65) Cx. quinquefasciatus, 2/5 (MIR=400) Psorophora sp., 2/11 (MIR=142.85) Ps. varipes/albigenu, 1/1 (MIR= 1000) Sabethes chloropterus, 2/5 (MIR=285.7) Cx. bidens/interfor and 1/1 (MIR=1000) Aedes sp. DENV-4 was isolated from two pools containing three (#329) and 16 (#806) non-engorged females of Cx. quinquefasciatus. The SLEV, MAYV and the four DENV serotypes were identified in patients suspected of harboring dengue infection in Cuiabá in previous studies of the Virology Laboratory. Experimentally, Culex and Aedes spp. are competent vectors for MAYV. The identification of the virus in nonengorged females suggests these species may be involved in the urban cycle of MAYV in Cuiabá. Among the DENV serotypes, only DENV-1 and DENV-4 were identified in culicids captured in the city. DENV-4 has been responsible for major outbreaks in MT since 2012. The identification of DENV-4 in several mosquito species might be resultant either from natural infection or hematophagy in humans, since several of these pools presented engorged females. Cuiabá presents a favorable ecosystem for the occurrence of arboviruses and vector proliferation. Studies involving entomological and virological surveillance are important to estimate the epidemiological situation of arboviruses in the state.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-04-20
2018-04-27T17:52:07Z
2018-04-27T17:52:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv SERRA, Otacília Pereira. Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso. 2015. xiv, 88 f. Dissertação (Mestrado em Ciências da Saúde) - Universidade Federal de Mato Grosso, Faculdade de Medicina, Cuiabá, 2015.
http://ri.ufmt.br/handle/1/694
identifier_str_mv SERRA, Otacília Pereira. Arbovírus dos gêneros Flavivirus e Alphavirus em culicídeos capturados em Cuiabá, Mato Grosso. 2015. xiv, 88 f. Dissertação (Mestrado em Ciências da Saúde) - Universidade Federal de Mato Grosso, Faculdade de Medicina, Cuiabá, 2015.
url http://ri.ufmt.br/handle/1/694
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal de Mato Grosso
Brasil
Faculdade de Medicina (FM)
UFMT CUC - Cuiabá
Programa de Pós-Graduação em Ciências da Saúde
publisher.none.fl_str_mv Universidade Federal de Mato Grosso
Brasil
Faculdade de Medicina (FM)
UFMT CUC - Cuiabá
Programa de Pós-Graduação em Ciências da Saúde
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFMT
instname:Universidade Federal de Mato Grosso (UFMT)
instacron:UFMT
instname_str Universidade Federal de Mato Grosso (UFMT)
instacron_str UFMT
institution UFMT
reponame_str Repositório Institucional da UFMT
collection Repositório Institucional da UFMT
repository.name.fl_str_mv Repositório Institucional da UFMT - Universidade Federal de Mato Grosso (UFMT)
repository.mail.fl_str_mv jordanbiblio@gmail.com
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