The serum levels of cytokines in thyroid heart failure patients

In recent years, the system of cytokines has a significant role in forming and progressing chronic heart failure of various etiologies (ischemic, inflammatory, infectious and allergic, etc.). Aim. To study the activity of proinflammatory cytokines (interleukin-1α (Il-1α), interleukin-1β (Il-1β), interleukin-6 (Il-6) and interleukin-8 (Il-8) and anti-inflammatory cytokine (interleukin-4 (Il-4) in heart failure (HF) in thyrotoxicosis patients.Materials and methods. 64 patients and 20 healthy volunteers were examined; they were distributed in 3 groups: group I (44 patients) patients with thyroid cardiomyopathy, group II (20) patients with no sign of cardiomyopathy and group III – 20 healthy volunteers. The serum levels of interleukines 1α, 1β, 4, 6 and 8 at admission, in 21 days and 6 months were measured.Results. The level of IL-6 and IL-8 were significantly higher in patients with thyrotoxic HF compared to those without HF and healthy subjects. Correlation in Il-6 and Il-8 serum levels and severity and duration of HF were revealed. No correlation in Il-4 serum levels and HF was found.Conclusions. It can be assumed that Il-6 and Il-8 are involved in the progression of heart failure and, less likely, in the formation of cardiomyopathy; however, for a more accurate identification of these regularities further studies are required.