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  • Title: Frequency and functional activity of Th17, Tc17 and other T-cell subsets in Systemic Lupus Erythematosus.
    Author: Henriques A, Inês L, Couto M, Pedreiro S, Santos C, Magalhães M, Santos P, Velada I, Almeida A, Carvalheiro T, Laranjeira P, Morgado JM, Pais ML, da Silva JA, Paiva A.
    Journal: Cell Immunol; 2010; 264(1):97-103. PubMed ID: 20553755.
    Abstract:
    To compare frequency and functional activity of peripheral blood (PB) Th(c)17, Th(c)1 and Treg cells and the amount of type 2 cytokines mRNA we recruited SLE patients in active (n=15) and inactive disease (n=19) and healthy age- and gender-matched controls (n=15). The study of Th(c)17, Th(c)1 and Treg cells was done by flow cytometry and cytokine mRNA by real-time PCR. Compared to NC, SLE patients present an increased proportion of Th(c)17 cells, but with lower amounts of IL-17 per cell and also a decreased frequency of Treg, but with increased production of TGF-beta and FoxP3 mRNA. Iotan active compared to inactive SLE, there is a marked decreased in frequency of Th(c)1 cells, an increased production of type 2 cytokines mRNA and a distinct functional profile of Th(c)17 cells. Our findings suggest a functional disequilibrium of T-cell subsets in SLE which may contribute to the inflammatory process and disease pathogenesis.
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