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Here, we summarize the abnormalities of the T cell response in autoimmune myasthenia gravis (MG) by focusing on activation markers, inflammatory features, and imbalance between the different T cell subsets, including Th17 and regulatory T cells (T<jats:sub>reg<\/jats:sub> cells). In the thymus from MG patients, T<jats:sub>reg<\/jats:sub> cell numbers are normal while their suppressive function is severely defective, and this defect could not be explained by contaminating effector CD127<jats:sup>low<\/jats:sup> T cells. A transcriptomic analysis of T<jats:sub>reg<\/jats:sub> cell and conventional T cell (T<jats:sub>conv<\/jats:sub>; CD4<jats:sup>+<\/jats:sup>CD25<jats:sup>\u2212<\/jats:sup> cells) subsets pointed out an upregulation of Th17\u2010related genes in MG cells. Together with our previous findings of an inflammatory signature in the MG thymus and an overproduction of IL\u20101 and IL\u20106 by MG thymic epithelial cells (TEC), these data strongly suggest that T cell functions are profoundly altered in the thymic pathological environment. In this short review we discuss the mechanisms of chronic inflammation linked to the pathophysiology of MG disease.<\/jats:p>","DOI":"10.1111\/j.1749-6632.2012.06791.x","type":"journal-article","created":{"date-parts":[[2012,12,18]],"date-time":"2012-12-18T19:02:49Z","timestamp":1355857369000},"page":"40-47","source":"Crossref","is-referenced-by-count":33,"title":["Defects of immunoregulatory mechanisms in myasthenia gravis: role of IL\u201017"],"prefix":"10.1111","volume":"1274","author":[{"given":"Angeline","family":"Gradolatto","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dani","family":"Nazzal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Foti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacky","family":"Bismuth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frederique","family":"Truffault","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rozen Le","family":"Panse","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonia","family":"Berrih\u2010Aknin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,12,17]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI117302"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI1248"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.34.1.66"},{"key":"e_1_2_8_5_2","doi-asserted-by":"crossref","first-page":"2115","DOI":"10.4049\/jimmunol.145.7.2115","article-title":"Thymic B cells from myasthenia gravis patients are activated B cells. 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