Increased IL-17 and TGF-β serum levels in peripheral blood of patients with β-thalassemia major: Implication for continual transfusions role in T helper 17-mediated proinflammatory responses

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Abstract

Background/aim: Recent studies have shown that IL-17-producing CD4+ T helper (Th17) cells play an important role in proinflammatory processes. In this report we analyzed IL-17, IL-21, and TGF-β serum levels in the peripheral blood of Iranian beta-thalassemia major patients that clinically exhibited splenectomy and iron overload. Materials and methods: Blood samples were collected from 43 beta-thalassemia patients and 43 healthy individuals with no history of malignancies or autoimmune disorders. Then serum levels of IL-17, IL-21, and TGF-β were measured by enzyme linked immunosorbent assay (ELISA). Results: The levels of IL-17 (P = 0.005) and TGF-β (P < 0.001) were significantly higher in the thalassemia patients compared to the healthy control. No significant differences in the level of serum IL-21 was observed between the patients and controls. There were no significant differences in serum levels of IL-17, IL-21, and TGF-β between patients with high or low serum levels of ferritin. Conclusion: Multiple blood transfusions cause constant immune stimulation, as a result of repeated exposure to new alloantigens. This might have significant effects on the stimulation of cytokine producing cells in those patients and cytokine profile can be used as a related marker for assessing disease severity and consequently therapeutic intervention.

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Baharlou, R., Davami, M. H., Ahmadi Vasmehjani, A., & Ebrahimi, M. (2016). Increased IL-17 and TGF-β serum levels in peripheral blood of patients with β-thalassemia major: Implication for continual transfusions role in T helper 17-mediated proinflammatory responses. Turkish Journal of Medical Sciences, 46(3), 749–755. https://doi.org/10.3906/sag-1409-57

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