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da Silva Cezar RD, da Silva Castanha PM, Matos Freire N, Mola C, Feliciano do Carmo R, Tenório Cordeiro M, Baptista P, Silva Vasconcelos LR, Moura P, da Silva Teixeira VG. Association between interferon lambda 3 rs12979860 polymorphism and clinical outcome in dengue virus-infected children. Int J Immunogenet 2020; 47:351-358. [PMID: 32065450 DOI: 10.1111/iji.12477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 12/26/2019] [Accepted: 01/13/2020] [Indexed: 01/01/2023]
Abstract
Single nucleotide polymorphisms (SNPs) in immune-related genes have been shown to play a role in driving the development of the severe phenotypes of dengue virus (DENV) infection. We assessed the association between IFNL3 gene SNP (rs12979860) and dengue clinical outcomes in children. Patients with dengue-related symptoms (aged 1-15 years) admitted at a public hospital in Northeast Brazil were invited to participate. The association between rs12979860 polymorphism and dengue classification and clinical signs and symptoms were analysed. A total of 206 DENV-infected children were included: 53.4% of the infections were classified as severe dengue. The T allele carriers had higher risk of developing severe dengue when compared to CC genotype carriers (OR: 1.81; 95% CI: 0.98-3.32 p = .054). The T allele carriers also showed longer fever episodes when compared to patients with the CC genotype (OR: 1.90; 95%CI: 1.07-3.38; p = .027). On the other hand, the ones carrying the CT/TT genotype had 70% lower chance of developing thrombocytopenia when compared to those with the CC genotype (OR: 0.30; 95%CI: 0.08-0.88; p = .042). Our findings demonstrated that the T allele carriers of the IFNL3 gene had higher risk of developing severe dengue, suggesting a link between IFN-λ expression and DENV immunopathogenesis.
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Affiliation(s)
| | | | | | - Carla Mola
- Instituto de Ciências Biológicas, Universidade de Pernambuco, Recife, Brasil
| | | | | | - Paulo Baptista
- Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
| | - Luydson Richardson Silva Vasconcelos
- Faculdade de Ciências Médicas, Universidade de Pernambuco, Recife, Brasil
- Instituto Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Brasil
- Instituto do Fígado, Recife, Brasil
| | - Patrícia Moura
- Instituto de Ciências Biológicas, Faculdade de Ciências Médicas, Recife, Brasil
- Campus Arcoverde, Universidade de Pernambuco, Recife, Brasil
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Neco HVPDC, Teixeira VGDS, da Trindade ACL, Magalhães PMR, de Lorena VMB, Castellano LRC, de Souza JR, Vasconcelos LR, de Moura PMMF, de Morais CNL. Mediators Go Together: High Production of CXCL9, CXCL10, IFN-γ, and TNF-α in HTLV-1-Associated Myelopathy/Tropical Spastic Paraparesis. AIDS Res Hum Retroviruses 2017. [PMID: 28648091 DOI: 10.1089/aid.2016.0296] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is a chronic demyelinating and disabling syndrome caused by human T lymphotropic virus 1 (HTLV-1). Although the pathogenic mechanisms that lead to HAM/TSP outcome have not been elucidated, genetic and immunological factors may be involved in the myelopathy occurrence. This study aimed to compare cytokines, chemokines, and nitric oxide (NO) levels in asymptomatic and HAM/TSP HTLV-1-infected patients. The study group consisted of 21 HAM/TSP and 48 asymptomatic HTLV-1 patients. Chemokines (CCL5, CCL2, CXCL8, CXCL9, and CXCL10) and cytokines [IL-2, interferon gamma (IFN-γ), tumor necrosis factor alpha (TNF-α), IL-4, IL-6, and IL-10] were measured using cytometric bead array, whereas NO production was measured after reaction of supernatants with nitrate reduction solution. CXCL9 and CXCL10 chemokines levels were found to be higher in the HAM/TSP group. CXCL9 was also strongly correlated with CXCL10 and both CXCL9 and CXCL10 were moderately correlated with CCL2 and CCL5 levels, in both HAM/TSP and asymptomatic groups. There was no significant difference related to NO, IL-4, IL-6, and IL-10 levels between the clinical groups but TNF-α and IFN-γ levels were increased in HAM/TSP patients. Thus, factors such as CXCL9, CXCL10, TNF-α, and IFN-γ could be good prognostic biomarker candidates, and further studies may help to clarify their association with HAM/TSP immunopathogenesis.
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Affiliation(s)
- Heytor Victor Pereira da Costa Neco
- Department of Virology and Experimental Therapy (LaViTE), Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (Fiocruz), Recife, Brazil
| | | | | | | | | | | | - Joelma Rodrigues de Souza
- Health Technical School, Federal University of Paraíba (UFPB), João Pessoa, Brazil
- Department of Physiology and Pathology, Health Science Center, Federal University of Paraíba (UFPB), João Pessoa, Brazil
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