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Peripheral spectrum neurological disorder after arbovirus infection is associated with HLA-F variants among Northeastern Brazilians


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fundação Oswaldo Cruz

Introduction: Non-classical class I human leukocyte antigens (HLA) molecules are known to modulate the function of cytotoxic cells (NK and T CD8+) during viral infection by interacting with inhibitory/activating receptors. However, little is known about the HLA-E/-F genetic variability on arbovirus infections. Methods: We evaluated by massive parallel sequencing the full HLA-E/-F genetic diversity among patients infected during the arbovirus (ZIKV, DENV, and CHIKV) outbreak leading to a broad range of neurological complications in the Brazilian State of Pernambuco. In parallel, healthy blood donors from the same area were also studied. Plink and R software were used for genetic association study. To limit the false-positive results and enhance the reliability of the results, we adopted P-values <0.01 as significant levels. Results: Compared to controls, the HLA-F alleles: −1610 C (rs17875375), +1383 G (rs17178385), and +3537 A (rs17875384), all in complete linkage disequilibrium with each other (r2 = 1), were overrepresented in patients presenting peripheral spectrum disorders (PSD). The HLA-F*Distal-D haplotype that harbored the −1610 C allele exhibited a trend increase in PSD group. No associations were found for HLA-E. Conclusions: Our findings showed that the HLA-F genetic background seems to be more important than HLA-E on the susceptibility to PSD complications.

Immunogenetic Laboratory Immunology Department Aggeu Magalhães Institute Oswaldo Cruz Foundation, Av. Moraes rego, s/n, Campus da UFPE, Cidade Universitária

Ribeirão Preto Medical School University of São Paulo, AV Bandeirantes, 3900, HC, Vila Monte Alegre

Hospital da Restauração Gov. Paulo Guerra, Av. Gov. Agamenon Magalhães, s/n, Derby

Virology Department Aggeu Magalhães Institute Oswaldo Cruz Foundation, Av. Moraes rego, s/n, Campus da UFPE, Cidade Universitária

Public Health Department Aggeu Magalhães Institute Oswaldo Cruz Foundation, Av. Moraes rego, s/n, Campus da UFPE, Cidade Universitária

São Paulo State University (UNESP) School of Medicine Molecular Genetics and Bioinformatics Laboratory Prof. Dr. Walter Maurício Correa, s/n Unesp, Campus de Botucatu

São Paulo State University (UNESP) Department of Pathology School of Medicine

São Paulo State University (UNESP) School of Medicine Molecular Genetics and Bioinformatics Laboratory Prof. Dr. Walter Maurício Correa, s/n Unesp, Campus de Botucatu

São Paulo State University (UNESP) Department of Pathology School of Medicine

CNPq: 302060/2019-7

CNPq: 310364/2015-9

CNPq: 310892/2019-8

CNPq: 440760/2016-0

CAPES: 88881.130769/2016-01

Fundação Oswaldo Cruz: INOVA FIOCRUZ/02/2019 PDJ

Document Type Journal article
Language English
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