Isolation of dengue virus serotype 4 genotype II from a patient with high viral load and a mixed Th1/Th17 inflammatory cytokine profile in South Brazil

dc.creatorKuczera, Diogo
dc.creatorBavia, Lorena
dc.creatorMosimann, Ana Luiza Pamplona
dc.creatorKoishi, Andrea Cristine
dc.creatorMazzarotto, Giovanny Augusto Camacho Antevere
dc.creatorAoki, Mateus Nóbrega
dc.creatorMansano, Ana Maria Ferrari
dc.creatorTomeleri, Ediléia Inês
dc.creatorCosta Junior, Wilson Liuti
dc.creatorMiranda, Milena Menegazzo
dc.creatorSarzi, Maria Lo
dc.creatorPavanelli, Wander Rogério
dc.creatorConchon-Costa, Ivete
dc.creatorSantos, Claudia Nunes Duarte dos
dc.creatorBordignon, Juliano
dc.date2016-10-07T19:30:47Z
dc.date2016-10-07T19:30:47Z
dc.date2016
dc.date.accessioned2023-09-27T00:15:45Z
dc.date.available2023-09-27T00:15:45Z
dc.identifierKUCZERA, Diogo. et al. Isolation of dengue virus serotype 4 genotype II from a patient with high viral load and a mixed Th1/Th17 inflammatory cytokine profile in South Brazil. Virol J., v. 13, n. 93, p. 1-8, 2016.
dc.identifier1743-422X
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/16156
dc.identifier10.1186/s12985-016-0548-9
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8899078
dc.descriptionCNPq PROCAD/Casadinho, PAPES/Fiocruz, Brazilian Ministry of Health (PPSUS-2012)/Fundação Araucária
dc.descriptionBackground We report the isolation and characterization of dengue virus (DENV) serotype 4 from a resident of Santa Fé, state of Paraná, South Brazil, in March 2013. This patient presented with hemorrhagic manifestations, high viral load and, interestingly, a mixed Th1/Th17 cytokine profile. Case presentation The patient presented with classical dengue symptoms, such as fever, rash, myalgia, arthralgia, and hemorrhagic manifestations including petechiae, gum bleeding and a positive tourniquet test result. A serum sample obtained 1 day after the initial appearance of clinical symptoms was positive for NS1 viral antigen, but this sample was negative for both IgM and IgG against DENV. Dengue virus infection was confirmed by isolation of the virus from C6/36 cells, and dengue virus serotyping was performed via one-step RT-PCR. The infection was confirmed to be caused by a serotype 4 dengue virus. Additionally, based on multiple alignment and phylogeny analyses of its complete genome sequence, the viral strain was classified as genotype II (termed LRV13/422). Moreover, a mixed Th1/Th17 cytokine profile was detected in the patient’s serum, and this result demonstrated significant inflammation. Biological characterization of the virus via in vitro assays comparing LRV13/422 with a laboratory-adapted reference strain of dengue virus serotype 4 (TVP/360) showed that LRV13/422 infects both vertebrate and invertebrate cell lines more efficiently than TVP/360. However, LRV13/422 was unable to inhibit type I interferon responses, as suggested by the results obtained for other dengue virus strains. Furthermore, LRV13/422 is the first completely sequenced serotype 4 dengue virus isolated in South Brazil. Conclusion The high viral load and mixed Th1/Th17 cytokine profile observed in the patient’s serum could have implications for the development of the hemorrhagic signs observed, and these potential relationships can now be further studied using suitable animal models and/or in vitro systems.
dc.formatapplication/pdf
dc.languageeng
dc.publisherLinfa Wang
dc.rightsopen access
dc.subjectDengue virus serotype 4
dc.subjectGenetic characterization
dc.subjectCytokines
dc.subjectIL-6
dc.subjectIFN-gamma
dc.subjectIL-17
dc.subjectViremia
dc.subjectParaná State
dc.subjectCitocinas
dc.subjectInterleucina-6
dc.subjectInterleucina-17
dc.titleIsolation of dengue virus serotype 4 genotype II from a patient with high viral load and a mixed Th1/Th17 inflammatory cytokine profile in South Brazil
dc.typeArticle


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