Anti-A and SARS-CoV-2: an intriguing association

Autor(es):Mostrar menos -

de Freitas Dutra, Valeria ^[1] ; Bonet-Bub, Carolina ^[1] ; Yokoyama, Ana Paula H. ^[1] ; Achkar, Ruth ^[2] ; Machado, Rafael Rahal Guaragna ^[3] ; Assuncao, Murilo ^[1] ; Candelaria, Gabriela ^[2] ; Soares, Camila Pereira ^[3] ; Fachini, Roberta Maria ^[2] ; Fontao-Wendel, Rita ^[2] ; Hamerschlak, Nelson ^[1] ; Reis, Luiz Fernando Lima ^[2] ; Araujo, Danielle Bastos ^{[3, 1]} ; Nudelman, Victor ^[1] ; Pinho, Joao R. R. ^[1] ; Rizzo, Luiz V. ^[1] ; Sakashita, Araci M. ^[1] ; Scuracchio, Patricia ^[2] ; Durigon, Edison Luiz ^{[3, 4]} ; Wendel, Silvano ^[2] ; Kutner, Jose M. ^[1]

Afiliação do(s) autor(es)

^[1] Hosp Israelita Albert Einstein, Av Albert Einstein 627, 3o Andar, Bloco E, BR-05652900 Sao Paulo, SP - Brazil

^[2] Hosp Sirio Libanes, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Inst Biomed Sci, Dept Microbiol, Sao Paulo - Brazil

^[4] Sci Platform Pasteur USP, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Vox Sanguinis; v. 116, n. 5 MAR 2021.
• Citações Web of Science: 1

Resumo

Background Blood groups and anti-A isohemagglutinin may be involved in susceptibility to SARS-CoV-2 infection. Materials and Methods We retrospectively studied 268 COVID-19 convalescent plasma donors and 162 COVID-19 inpatients (total 430 subjects, confirmed by RT-PCR) and 2,212 healthy volunteer first-time blood donors as a control group. These were further divided into two groups: those with anti-A (blood types O and B) and those without it (types A and AB). Titres of nucleoproteins, and neutralizing SARS-CoV-2 antibody were measured in the convalescent plasma donors and inpatients. Multivariate logistic regression and non-parametric tests were applied. Results Persons having types O or B showed less infection prevalence than those of types A or AB (OR = 0 center dot 62, 95% CI 0 center dot 50-0 center dot 78; P < 0 center dot 001), but there was no difference when COVID-19 inpatients were analysed. Immunoglobulins M, G and A were lower in COVID-19 subjects of types O or B group than those of A or AB (0 center dot 16 vs. 0 center dot 19; P = 0 center dot 03, 2 center dot 11 vs. 2 center dot 55; P = 0 center dot 02, 0 center dot 23 vs. 0 center dot 32; P = 0 center dot 03, respectively). Conclusion In this retrospective cohort, COVID-19 individuals were less likely to belong to blood types O and B, and also had lower SARS-CoV-2 antibody titres than A and AB individuals. COVID-19 severity did not associate with the blood groups. (AU)

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