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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Polymorphisms in Human Leukocyte Antigens, Human Platelet Antigens, and Cytokine Genes in Hantavirus Cardiopulmonary Syndrome Patients from Ribeirao Preto, Brazil

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Borges, Alessandra Abel [1] ; Donadi, Eduardo Antonio [2] ; Campos, Gelse Mazzoni [1] ; de Figueiredo, Glauciane Garcia [1] ; Saggioro, Fabiano Pinto [3, 4] ; Badra, Soraya Jabur [1] ; Saloum Deghaide, Neifi Hassan [2] ; Moraes Figueiredo, Luiz Tadeu [1]
Total Authors: 8
[1] Univ Sao Paulo, Sch Med Ribeirao Preto, Virol Res Ctr, BR-14049900 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Sch Med Ribeirao Preto, Mol Immunol Lab, Hosp Clin, BR-14049900 Ribeirao Preto, SP - Brazil
[3] Univ Sao Paulo, Sch Med Ribeirao Preto, Dept Pathol, BR-14049900 Ribeirao Preto, SP - Brazil
[4] Univ Sao Paulo, Sch Med Ribeirao Preto, Death Verificat Serv CEMEL, BR-14049900 Ribeirao Preto, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of Medical Virology; v. 86, n. 11, p. 1962-1970, NOV 2014.
Web of Science Citations: 2

Hantavirus cardiopulmonary syndrome is a severe human disease associated with hantavirus infection. The clinical course of illness varies greatly among individuals, possibly due to viral and immunological elements and the influence of host genetic factors on clinical outcome. As the magnitude of immune activation has been associated with disease severity, polymorphisms in genes involved in the immune response that may affect the development of this syndrome were investigated. Polymorphisms in the TGF-, IL-10, IL-6, and IFN- genes, human leukocyte antigens (HLA), and human platelet alloantigens (HPA) genes were investigated in 122 patients with Araraquara virus infection from RibeirAo Preto, Brazil. Patients were divided into two groups: hantavirus cardiopulmonary syndrome (HCPS group; n=26) and hantavirus seropositive only (n=96). The frequencies of HLA alleles, cytokines and platelet antigen genotypes were evaluated in both groups and compared to a control group. The data demonstrated no significant influence of the HLA alleles, HPA, IL-6, and IL-10 genotypes on susceptibility to hantavirus infection. However, the hantavirus seropositive group presented a significantly higher frequency of a polymorphism associated with a high IFN- production than the HCPS group. In addition, a genotype associated with high TGF- production was found more frequently in individuals infected with hantavirus than in the control group. This phenotype was associated with a less intense thrombocytopenia in the HCPS group and may be protective against the most severe form of hantavirus disease. More studies are required to quantify further the influence of the high TGF- producer phenotype on the outcome of hantavirus infection. J. Med. Virol. 86:1962-1970, 2014. (c) 2013 Wiley Periodicals, Inc. (AU)

FAPESP's process: 03/03682-3 - Study on Brazilian arboviruses and rodent related viruses
Grantee:Luiz Tadeu Moraes Figueiredo
Support type: Research Projects - Thematic Grants