ArticleVirology journal2016
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.
Article in Virology journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 22 citations in OpenAlex.
- Acute Febrile Illness Associated with an Emerging Dengue 4 GIIb Variant Causing Epidemic in León, Nicaragua 2022.Viruses · 2025Article
- Viremia and Inflammatory Cytokines in Dengue: Interleukin-2 as a Biomarker of Infection, and Interferon-α and -γ as Markers of Primary versus Secondary Infection.Pathogens (Basel, Switzerland) · 2023Article
- Article
- T cells in health and disease.Signal transduction and targeted therapy · 2023Review
- Emergence of Dengue 4 as Dominant Serotype During 2017 Outbreak in South India and Associated Cytokine Expression Profile.Frontiers in cellular and infection microbiology · 2021Article
- Epidemiological study on dengue in southern Brazil under the perspective of climate and poverty.Scientific reports · 2020Article
- Flavivirus-Mediating B Cell Differentiation Into Antibody-Secreting Cells in Humans Is Associated With the Activation of the Tryptophan Metabolism.Frontiers in immunology · 2020Article
- Article
- A new Aura virus isolate in Brazil shows segment duplication in the variable region of the nsP3 gene.Parasites & vectors · 2018Article
- Human T Lymphocytes Are Permissive for Dengue Virus Replication.Journal of virology · 2018Article
- The citrus flavanone naringenin impairs dengue virus replication in human cells.Scientific reports · 2017Article
- HELZ2 Is an IFN Effector Mediating Suppression of Dengue Virus.Frontiers in microbiology · 2017Article
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Authors and funding
15 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWe 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.
conclusionThe 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.
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