Frontiers in Immunology (Dec 2021)

Association of IL-9, IL-10, and IL-17 Cytokines With Hepatic Fibrosis in Human Schistosoma mansoni Infection

  • Karine Garcez Schuster Franco,
  • Karine Garcez Schuster Franco,
  • Fabio Jorge Ramalho de Amorim,
  • Fabio Jorge Ramalho de Amorim,
  • Mário Adriano Santos,
  • Carla Virgínia Vieira Rollemberg,
  • Carla Virgínia Vieira Rollemberg,
  • Fabricia Alvisi de Oliveira,
  • Fabricia Alvisi de Oliveira,
  • Alex Vianey Callado França,
  • Alex Vianey Callado França,
  • Camilla Natália Oliveira Santos,
  • Camilla Natália Oliveira Santos,
  • Lucas Sousa Magalhães,
  • Lucas Sousa Magalhães,
  • Rodrigo Anselmo Cazzaniga,
  • Rodrigo Anselmo Cazzaniga,
  • Frederico Santana de Lima,
  • Luciana Benevides,
  • Vanessa Carregaro,
  • João Santana Silva,
  • Hugo Leite de Farias Brito,
  • Daniel Alvarenga Fernandes,
  • Ângela Maria da Silva,
  • Ângela Maria da Silva,
  • Ângela Maria da Silva,
  • Roque Pacheco de Almeida,
  • Roque Pacheco de Almeida,
  • Roque Pacheco de Almeida,
  • Roque Pacheco de Almeida,
  • Márcio Bezerra-Santos,
  • Márcio Bezerra-Santos,
  • Márcio Bezerra-Santos,
  • Amélia Ribeiro de Jesus,
  • Amélia Ribeiro de Jesus,
  • Amélia Ribeiro de Jesus,
  • Amélia Ribeiro de Jesus

DOI
https://doi.org/10.3389/fimmu.2021.779534
Journal volume & issue
Vol. 12

Abstract

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This is a case series study to evaluate immunological markers associated with schistosomiasis advanced fibrosis, including 69 patients from an endemic area from the State of Sergipe and from the Hepatology Service of the University Hospital in Sergipe, Brazil. Hepatic fibrosis was classified based on Niamey protocol for ultrasonography (US). Immune response to Schistosoma mansoni antigens was evaluated by stimulating peripheral blood mononuclear cells (PBMCs) from these patients with either adult worm (SWAP—10 μg/ml) or egg (SEA—10 μg/ml) antigens or purified protein derivative of turberculin (PPD—10 μg/ml) or phytohemagglutinin (PHA—1 μg/ml) for 72 h. The levels of IFN-γ, TNF-α, IL-5, IL-10, and IL-17 were measured in these supernatants by ELISA and IL-9 by Luminex. Single nucleotide polymorphisms in IL-17, IL10, and CD209 genes were genotyped using TaqMan probe by qPCR. Higher levels of IL-9, IL-10, and IL-17 were found in PBMC supernatants of patients with advanced hepatic fibrosis. Direct correlations were detected between IL-9 and IL-17 levels with US spleen sizes, portal vein diameters, and periportal thickening. The CD209 rs2287886 AG polymorphism patients produce higher IL-17 levels. Together, these data suggest a role of these cytokines in the immunopathogenesis of advanced fibrosis in human schistosomiasis.

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