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FUT2 secretor status and FUT3 polymorphisms of 2 children with acute diarrhea infected with rotavirus 3 and norovirus in Brazil

Abstract : Host susceptibility according to human histo-blood group antigens (HBGAs) is widely known for norovirus infection, but less described for rotavirus. Due to the variable HBGA polymorphism among populations, we aimed at evaluating the association between HBGA phenotypes (ABH, Lewis and secretor status) and susceptibility to rotavirus and norovirus symptomatic infection, and the polymorphisms of FUT2 and FUT3, of children from southeastern Brazil. Paired fecal-buccal specimens from 272 children with acute diarrhea were used to determine rotavirus/norovirus genotypes and HBGAs phenotypes/genotypes, respectively. Altogether 100 (36.8%) children were infected with rotavirus and norovirus. The rotavirus P[8] genotype predominates (85.7%). Most of the noroviruses (93.8%) belonged to genogroup II (GII). GII.4 Sydney represented 76% (35/46) amongst five other genotypes. Rotavirus and noroviruses infected predominantly children with secretor status (97% and 98.5%, respectively). However, fewer rotavirus-infected children were Lewis-negative (8.6%) than the norovirus-infected ones (18.5%). FUT3 Single Nucleotide Polymorphisms (SNP) occurred mostly at T59G> G508A> T202C> C314T positions. Our results reinforce the current knowledge that secretors are more susceptible to infection by both rotavirus and norovirus than non-secretors. The high rate for Lewis negative (17.1%) and the combination of SNPs, beyond the secretor status, may reflect the highly mixed population in Brazil.
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https://www.hal.inserm.fr/inserm-02948761
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Submitted on : Friday, September 25, 2020 - 9:05:25 AM
Last modification on : Thursday, October 22, 2020 - 3:02:25 AM

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Marco André Loureiro Tonini, Débora Maria Pires Gonçalves Barreira, Luciana Bueno de Freitas Santolin, Paula Bondi Lays Volpini, José Paulo Gagliardi Leite, et al.. FUT2 secretor status and FUT3 polymorphisms of 2 children with acute diarrhea infected with rotavirus 3 and norovirus in Brazil. Viruses, MDPI, 2020, 12, Online ahead of print. ⟨inserm-02948761⟩

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