Contribution of inflammasome genetics in Plasmodium vivax malaria

Autor(es)

Santos, Marina L. S. ; Reis, Edione Cristina ; Bricher, Pamela N. ; Sousa, Tais N. ; Brito, Cristiana F. A. ; Lacerda, Marcus V. G. ; Fontes, Cor J. F. ; Carvalho, Luzia H. ; Pontillo, Alessandra

• Tipo de documento: Artigo Científico
• Fonte: INFECTION GENETICS AND EVOLUTION; v. 40, p. 5-pg., 2016-06-01.

Resumo

Recent reports showed that, in mice, symptomatic Plasmodium infection triggers NLRP3/NLRP12-dependent inflammasome formation and caspase-1 activation in monocytes. In humans, few works demonstrated that inflammasome is activated in malaria. As Plasmodium vivax is a potent inducer of inflammatory response we hypothesised that inflammasome genetics might affect P. vivax malaria clinical presentation. For this purpose, selected SNPs in inflammasome genes were analysed among patients with symptomatic P. vivax malaria. 157 Brazilian Amazon patients with P. vivax malaria were genotyped for 10 single nucleotide polymorphisms (SNPs) in inflammasome genes NLRP1, NLRP3, AIM2, CARD8, IL1B, IL18 and MEFV. Effect of SNPs on hematologic and clinical parameters was analysed by multivariate analysis. Our data suggested an important role of NLRP1 inflammasome receptor in shaping the clinical presentation of P. vivax malaria, in term of presence of fever, anaemia and thrombocytopenia. Moreover IL1B rs1143634 resulted significantly associated to patients' parasitaemia, while IL18 rs5744256 plays a protective role against the development of anaemia. Polymorphisms in inflammasome genes could affect one or other aspects of malaria pathogenesis. Moreover, these data reveal novel aspects of P. vivax/host interaction that involved NLRP1-inflammasome. (c) 2016 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/06142-1 - Perfil genômico da resposta imune ao HIV-1 e implicações para a vacina terapêutica com células dendríticas contra o HIV-1
• Beneficiário: Alessandra Pontillo
• Modalidade de apoio: Auxílio à Pesquisa - Regular