Resolution of inflammation is altered in chronic heart failure and entails a dysfunctional responsiveness of T lymphocytes

Valerio Chiurchiu, Alessandro Leuti, Stefano Saracini, Davide Fontana, Panaiotis Finamore, Renato Giua, Lucia Padovini, Raffaele Antonelli Incalzi, Mauro MacCarrone

Research output: Contribution to journalArticlepeer-review

Abstract

Chronic heart failure (CHF) is characterized by an ongoing nonresolving inflammatory status, where T lymphocytes seem critical. It has been recently recognized that transition from acute to chronic inflammation could be caused by defects in resolving inflammation, the resolution of which is mediated by a novel family of v-3-derived specialized proresolving lipid mediators such as resolvins. We analyzed 27 elderly patients with CHF and 23 healthy age-matched control subjects, and we reported significantly lower levels of D-series resolvin (RvD)1 in plasma of patients with CHF that were associated with a reduced ability of their leukocytes to produce this lipid via its biosynthetic enzyme 15-lipoxygenase and that correlated with gas exchange dysfunction. Furthermore, when pretreating ex vivo peripheral blood mononuclear cells of patients with CHF with RvD1 or RvD2, we found that neither of them was able to modulate the immune response of CD8+ and CD4+ T cells in terms of proinflammatory cytokine production, namely TNF-α, IFN-γ, IL-17, and IL-2. Such impaired T-cell responsiveness in patients with CHF was associated with a significant reduction in mRNA and protein expression of RvD1 receptor GPR32, suggesting a defective signaling in the proresolving pathway. We conclude that patients with CHF show alterations in producing proresolving mediator RvD1 and a failure of adaptive immune cells in responding to the antiinflammatory actions of RvDs that may contribute to the progression of chronic inflammation. Thus, the proresolution pathway might be a potential candidate to design better treatments for CHF aimed at reducing T cell-mediated chronic inflammation.

Original languageEnglish
Pages (from-to)909-916
Number of pages8
JournalFASEB Journal
Volume33
Issue number1
DOIs
Publication statusE-pub ahead of print - 2018

Keywords

  • Adaptive immunity
  • Chronic inflammation
  • Resolvins

ASJC Scopus subject areas

  • Biotechnology
  • Biochemistry
  • Molecular Biology
  • Genetics

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