Marion Ciudad, Sethi Ouandji, Baptiste Lamarthée, Claudie Cladière, Thibault Ghesquière, Martin Nivet, Marine Thébault, Romain Boidot, Agnès Soudry-Faure, Sandy Chevrier, Corentin Richard, Thibault Maillet, François Maurier, Hélène Greigert, Coraline Genet, André Ramon, Malika Trad, Valérie Predan, Philippe Saas, Maxime Samson, Bernard Bonnotte, Sylvain Audia
Warm autoimmune hemolytic anemia (wAIHA) is a rare acquired autoimmune disease mediated by antibodies targeting red blood cells. The involvement of CD4 T helper (Th) cells has been scarcely explored, with most findings extrapolated from animal models. Here, we performed quantification of both effector T lymphocytes (Teff) and regulatory T cells (Treg), associated with functional and transcriptomic analyses of Treg in human wAIHA. We observed a shift of Teff toward a Th17 polarization concordant with an increase in serum IL-17 concentration that correlates with RBC destruction parameters, namely LDH and bilirubin levels...
August 3, 2023: Haematologica