01538nas a2200169   4500000000100000008004100001100001200042700001700054700001200071700001300083700001300096245015500109300001100264490000800275520107100283022001401354       2019                            d1 aSaini C1 aSrivastava R1 aKumar P1 aRamesh V1 aSharma A00aA distinct double positive IL-17A/F T helper 17 cells induced inflammation leads to IL17 producing neutrophils in Type 1 reaction of leprosy patients.  a1548730 v1263 a<p>Type 1 reactions (T1R) an inflammatory condition, of local skin patches in 30-40% leprosy patients during the course of MDT. IL-17A and IL-17F play an important role in regulating skin inflammation through neutrophils. In the present study, we have analyzed 18 of each T1R and Non-reactions (NR) patients through flow cytometry and qPCR. Interestingly we found that, CD3CD4 gated IL-17AIL-17F cells were significantly high in T1R in both MLSA stimulated PBMCs and skin lesions as compared to NR leprosy patients. Hierarchical clustering analysis of gene expression showed that CXCL6, CXCL5, CCL20, CCL7, MMP13 and IL-17RB expression were significantly associated with IL-17A and IL-17F expression (Spearman r = 0.77 to 0.98), neutrophils and monocyte markers respectively. In this study, the inflammation noted in lesions of T1R is a different phenotype of Th17 which produce double positive IL-17AIL17F and also contributes IL-17 producing neutrophils and thus would be useful for monitoring, diagnosis and treatment response before reactions episodes.</p>
  a1096-0023