|
|
|
| Registros recuperados: 45 | |
|
|
| Fantinatti,Elaine C.S.; Duque,Jonny E.L.; Silva,Allan M.; Navarro-Silva,Mario A.. |
| Avaliou-se a abundância e agregação dos ovos de Aedes aegypti L. e Aedes albopictus Skuse em Cambé, Ibiporã, Jacarezinho, Maringá e Paranavaí, PR, utilizando-se armadilhas de oviposição. De 225 armadilhas instaladas, 100 registraram-se positivas para ovos. Coletaram-se 4140 ovos, demonstrando distribuição altamente agregada. Ambas as espécies foram encontradas em Cambé, Jacarezinho, Maringá e Paranavaí. Ae. albopictus não foi detectado em Ibiporã, porém onde esteve presente foi menos abundante. A relação entre sexos aproximou-se de 1:1, para Ae. aegypti. Na comparação dos números de adultos coletados entre as duas espécies, obteve-se correlação negativa nas amostras de Maringá e Cambé, o que foi atribuído à sazonalidade dessas populações. A coexistência... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecologia de vetores; Armadilha de oviposição; Dengue; Espécie invasora; Mosquito. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600020 |
| |
|
| |
|
|
| Veloso,Henrique Horta; Ferreira Júnior,João Anísio; Paiva,Joyce Morgana Braga de; Honório,Júlio Faria; Bellei,Nancy C. Junqueira; Paola,Angelo Amato Vincenzo de. |
| Dengue fever is a viral infection transmitted by the mosquito, Aedes aegypti. Cardiac rhythm disorders, such as atrioventricular blocks and ventricular ectopic beats, appear during infection and are attributed to viral myocarditis. However, supraventricular arrhythmias have not been reported. We present a case of acute atrial fibrillation, with a rapid ventricular rate, successfully treated with intravenous amiodarone, in a 62-year-old man with dengue hemorrhagic fever, who had no structural heart disease. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Atrial fibrilation; Dengue; Arrhythmia. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000600010 |
| |
|
| |
|
|
| Silva,Ara; Morais,SM; Marques,MMM; Lima,DM; Santos,SCC; Almeida,RR; Vieira,IGP; Guedes,MIF. |
| In recent years, the search for natural plant products to fight viral diseases has been increasing. In this work, two Spondias species, namely S. mombin and S. tuberosa, found in Ceará state (Brazil), and their main phenolic components were evaluated against dengue virus. In vitro antiviral tests were performed against type-2 dengue virus by the MTT method and standard cytopathic effect reduction assay in C6/36 cells. Cytotoxicity was also evaluated by MTT. The presence of phenolic compounds quercetin, rutin, and ellagic acid in plant extracts was characterized by HPLC analysis. Both Spondias species extracts and components were nontoxic to the cells whereas rutin and quercetin displayed relevant antiviral activity with IC50 of 362.68 µg/mL and 500 µg/mL,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural products; Phenols; Dengue; Antiviral agents. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000400007 |
| |
|
| |
|
| |
|
|
| Beserra,Eduardo B.; Freitas,Eraldo M. de; Souza,José T. de; Fernandes,Carlos R. M.; Santos,Keliana D.. |
| O trabalho teve por objetivo avaliar o efeito da qualidade da água no desenvolvimento de Aedes aegypti (Linnaeus, 1762). O ciclo de vida desse vetor foi estudado em águas de esgoto bruto, efluente de reator UASB, efluente de lagoa de polimento, efluente de filtro anaeróbio, água de chuva e água desclorada. Diariamente avaliaram-se o período de desenvolvimento e as viabilidades de ovo, larva, pupa, longevidade e a fecundidade dos adultos. A duração do período larval variou de 5,6 a 9,1 dias, sendo a sobrevivência baixa em águas de esgoto bruto, efluente de reator UASB, efluente de lagoa de polimento e efluente de filtro anaeróbio. Não foram observadas diferenças nas durações e viabilidades das fases de ovo e pupa, longevidade e fecundidade dos adultos.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Vetor; Dengue; Ciclo biológico; Qualidade da água. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300008 |
| |
|
|
| Castro Jr.,Francisco P. de; Martins,Walter F. S.; Lucena Filho,Mauricio L. de; Almeida,Raul P. de; Beserra,Eduardo B.. |
| O presente trabalho teve como objetivo comparar os ciclos de vida entre amostras de populações de Aedes aegypti (Linnaeus, 1762) coletadas em dez municípios localizados no semiárido paraibano. Os ciclos de vida foram estudados a uma temperatura de 26 ± 2ºC, umidade relativa de 60 ± 10% e fotofase de 12 horas. Diariamente foram avaliados os períodos de desenvolvimentos e as viabilidades das fases de ovo, larva e pupa, bem como a razão sexual, longevidade, tamanho e fecundidade dos adultos. Foi realizada uma análise de agrupamento, utilizando-se uma matriz de distância euclidiana através do método da média não-ponderada. As durações e viabilidades para as fases de ovo, larva e pupa apresentaram respectivamente, uma variação média de 3,7 a 4,7 dias e 82,8% a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedini; Vetor; Dengue; Ciclo biológico. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200006 |
| |
|
|
| Souza,Luiz José de; Pessanha,Laís Bastos; Mansur,Laura Carvalho; Souza,Luiza Assed de; Ribeiro,Mariana Barbosa Tâmega; Silveira,Monique do Vale da; Souto Filho,João Tadeu Damian. |
| Over the past several years, the epidemiological profile of dengue has been changing progressively and is currently characterized by an increase in the number of cases in children under 15 years of age. This study was aimed at comparing the clinical and laboratory features between adults and children with dengue; therefore, we performed a cross-sectional analysis of 5686 individuals with laboratory-confirmed dengue who sought treatment at a healthcare facility in Rio de Janeiro, Brazil from 2010 to 2011. A multivariate analysis indicated that myalgia (OR = 2.58; CI 95% = 2.08-3.18), retro-orbital pain (OR = 1.36; CI 95% = 1.15-1.62), nausea (OR = 1.92; CI 95% = 1.60-2.30), and arthralgia (OR = 3.64; CI 95% = 2.72-4.89) were the most frequent clinical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Dengue fever; Clinical spectra; Epidemiology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100005 |
| |
|
|
| Aguirre-Obando,Oscar Alexander; Pietrobon,Anna Julia; Bona,Ana Caroline Dalla; Navarro-Silva,Mário Antônio. |
| ABSTRACT After a dengue outbreak, the knowledge on the extent, distribution and mechanisms of insecticide resistance is essential for successful insecticide-based dengue control interventions. Therefore, we evaluated the potential changes to insecticide resistance in natural Aedes aegypti populations to Organophosphates (OP) and Pyrethroids (PY) after chemical vector control interventions. After a Dengue outbreak in 2010, A. aegypti mosquitoes from the urban area of Jacarezinho (Paraná, Brazil) were collected in 2011 and 2012. Insecticide resistance to OP Temephos was assessed in 2011 and 2012 by dose–response bioassays adopting WHO-based protocols. Additionally, in both sampling, PY resistance was also investigated by the Val1016Ile mutation genotyping.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioassays; Dengue; Insecticide resistance; Knockdown resistance; Pyrethroids; Temephos. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000100094 |
| |
|
|
| De Paula,Sérgio Oliveira; Fonseca,Benedito Antônio Lopes da. |
| Dengue is the most important disease caused by an arbovirus (1, 2, 3 and 4 serotypes) worldwide, especially in the tropical and sub-tropical regions. Its clinical manifestations range from asymptomatic infections to a severe disease characterized by hemorrhage and shock. The incidence of dengue virus activity in the Americas has substantially increased from 1980 to 1994. In Brazil, the increase in the incidence of dengue is especially linked to the dissemination of Aedes aegypti. Thus, a rapid and accurate dengue diagnosis is of paramount importance for effective control of dengue outbreaks [8]. Five serological tests have been used for the diagnosis of dengue infection: hemagglutination-inhibition (HI), complement fixation (CF), neutralization test (NT),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Diagnosis; Serology; PCR. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600002 |
| |
|
|
| Mourão,Maria Paula Gomes; Lacerda,Marcus Vinícius Guimarães de; Bastos,Michele de Souza; Albuquerque,Bernardino Cláudio de; Alecrim,Wilson Duarte. |
| Dengue fever is the world's most important viral hemorrhagic fever disease, the most geographically wide-spread of the arthropod-born viruses, and it causes a wide clinical spectrum of disease. We report a case of dengue hemorrhagic fever complicated by acute hepatitis. The initial picture of classical dengue fever was followed by painful liver enlargement, vomiting, hematemesis, epistaxis and diarrhea. Severe liver injury was detected by laboratory investigation, according to a syndromic surveillance protocol, expressed in a self-limiting pattern and the patient had a complete recovery. The serological tests for hepatitis and yellow fever viruses were negative. MAC-ELISA for dengue was positive. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Dengue; Dengue hemorrhagic fever; Hepatitis. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600011 |
| |
|
|
| Mata,Veronica Elizabeth; Passos,Sonia Regina Lambert; Santos,Maria Angelica Borges dos; Buonora,Sibelle Nogueira; de Andrade,Carlos Augusto Ferreira; Lima,Monique da Rocha Queiroz; Costa,Betina Moreira; Hökerberg,Yara Hahr Marques. |
| ABSTRACT Background: Although performance of rapid immunochromatographic tests (RITs) for dengue virus (DENV) serotypes 1, 2 and 3 is relatively settled, evidence on accuracy of RITs for DENV-4 are based on studies with small sample sizes and with discrepant results. Objectives: To assess accuracy and inter-observer agreement of RITs targeting dengue nonstructural protein-1 (NS1) antigen - Dengue NS1-Bioeasy™, Dengue NS1 Ag Strip-Bio-Rad™, IVB Dengue Ag NS1-Orangelife™ and Dengue NS1-K130-Bioclin™ in DENV-4 samples. Methods: Study sample (n = 324) included adults presenting at an emergency unit in Rio de Janeiro, Brazil, with fever of ≤72 h and two or more dengue symptoms. A serum sample from each patient was tested by each RIT. A positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Immunochromatographic tests; Sensitivity and specificity; Reproducibility of tests; Diagnosis. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702020000100058 |
| |
|
|
| Quintero-Gil,Diana Carolina; Uribe-Yepes,Alexander; Ospina,Marta; Díaz,Francisco Javier; Martinez-Gutierrez,Marlen. |
| ABSTRACT Dengue, the most prevalent arboviral disease worldwide, is caused by any of the four dengue virus (DENV) serotypes that co-circulate constantly in hyperendemic areas such as Medellin (Colombia), and these serotypes are transmitted by mosquitoes of the genus Aedes. In this study, we evaluated the replicative capacity of strains isolated in Medellin between 2003 and 2007 in C6/36 cells and in colonies of Aedes aegypti collected during 2010-2011 from high or low-incidence areas within the same city. The phylogenetic analysis grouped isolates according to the predominant genotypes found in the Americas, and the in vitro characterization showed differences in the morphological changes induced by the isolates of each of the isolated serotypes compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Viral replication; Vector competence; Aedes aegypti; C6/36 cells; Colombia. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000400257 |
| |
|
|
| Lopes,José; Martins,Emerson Augusto Castilho; Oliveira,Osmar de; Oliveira,Valdecir de; Oliveira Neto,Bertolino Pedro de; Oliveira,José Eduardo de. |
| Seventy-two tyres were placed in four transects (Northern, Southern, Eastern and Western), every 5 km, from the Londrina city limits to the rural areas, to verify the dispersion of Aedes aegypti and Ae. albopictus vectors. Mosquito larvae were collected fortnightly from August 1998 to August 1999. Data were organized according to the average number of larvae collected for each species in each collection site. A total of 62,517 mosquito larvae were collected and distributed into the following species: Aedes albopictus (21.71%); Ae. aegypti (5.54%); Ae. terrens (0.53%); Ae. fluviatilis (0.36%); Anopheles argyritarsi (0.01%); Culex quinquefasciatus (48.37%); Cx. mollis (8.88%); Cx. eduardoi (8.65%); Cx. corniger (0.61%); Cx. bigoti (0.24%); Cx. grupo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes; Population dispersion; Dengue; Prevention and control; Breeding sites. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500009 |
| |
|
|
| Santos,CB; Leite,GR; Falqueto,A. |
| This study evaluates the importance of native bromeliads growing on rocky outcrops interspersed with urbanized areas as breeding sites for the Aedes aegypti (L.) in Vitória, state of Espírito Santo, Brazil. Oviposition traps were installed in backyards of houses in two separate zones. In the first zone houses were up to 50 m away from the rocky outcrops, while in the second zone they were at least at 200 m from the rocky outcrops. Aedes aegypti was significantly more abundant in the latter zone. The finding was that rocky outcrops with native bromeliads, even with the greater availability of potential breeding sites, do not play an important role as breeding sites for A. aegypti. This conclusion supports the hypothesis that the macrobiota of native... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Natural control; Brazil. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200019 |
| |
|
|
| Beserra,Eduardo B; Fernandes,Carlos R M; Sousa,José T de; Freitas,Eraldo M de; Santos,Keliana D. |
| The present research aimed at evaluating the influence of the water quality in the life cycle and attraction of Aedes aegypti (L.) females to oviposit using different sources of water (raw sewage, effluent of UASB reactor, effluent of polishing lagoon, effluent of anaerobic filter, rain water and de-chlorinated water). The immature development time and survivorship were evaluated on a daily basis in two distinct feeding systems (with and without food). The quality of the water was shown to affect the egg and larval stages, but not the pupal or the adult. In the absence of food, no development was observed in rain water and de-chlorinated water. Immature development was faster in water sources from raw sewage, although with the lowest survivorship (37.3%).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vector; Dengue; Aquatic development; Biology. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600026 |
| |
|
| |
|
| |
| Registros recuperados: 45 | |
|
|
|
