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Pyrin Inflammasome Activation Abrogates Interleukin-1 Receptor Antagonist, Suggesting a New Mechanism Underlying Familial Mediterranean Fever Pathogenesis.

Sussi B MortensenAnn-Brit E HansenTrine Hyrup MogensenMarianne A JakobsenHans C BeckEva B HarvaldKate L LambertsenIsik S JohansenDitte Caroline Andersen
Published in: Arthritis & rheumatology (Hoboken, N.J.) (2021)
Our data show an inherent lack of IL-1Ra expression specific to pyrin inflammasome activation, suggesting a new mechanism underlying FMF pathogenesis. The reduced IL-1Ra levels in FMF monocytes suggest a diminished antiinflammatory capacity that potentially leaves FMF patients sensitive to proinflammatory stimuli, regardless of receiving colchicine therapy. Thus, considering the potential clinical consequence of reduced monocyte IL-1Ra secretion in FMF patients, we suggest further investigation into IL-1Ra dynamics and its potential implications for FMF treatment in the future.
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