Бюллетень сибирской медицины (Oct 2020)

The content of hypoxia-inducible factors and mediators of immunosuppression in the blood in diseases associated with hypoxia

  • S. P. Chumakova,
  • O. I. Urazova,
  • M. V. Vins,
  • V. M. Shipulin,
  • A. S. Pryakhin,
  • E. B. Bukreeva,
  • A. A. Bulanova,
  • A. P. Koshel,
  • V. V. Novitsky

DOI
https://doi.org/10.20538/1682-0363-2020-3-105-112
Journal volume & issue
Vol. 19, no. 3
pp. 105 – 112

Abstract

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The aim of the study was to identify general patterns and features of changes in the content of hypoxia-inducible factors-1 and -2 in association with an imbalance of cytokines (IL-10, IL-13, galectin-2 and -9, IFN-gamma) in the blood in diseases associated with hypoxia.Materials and methods. We examined 25 patients with coronary heart disease (CHD) with heart failure II-III according to NYHA, 16 patients with chronic obstructive pulmonary disease (COPD) without exacerbation, 16 patients with infiltrative pulmonary tuberculosis (TB) before anti-TB therapy, and 18 relatively healthy donors. Plasma concentrations of HIF-1alpha, HIF-2alpha, IL-10, IL-13, galectins-2 and -9, and IFN-gamma were determined by enzyme-linked immunosorbent assay (ELISA).Results. Positive outcomes of quantity determination of HIF-2alpha in the blood (24.00 ± 8.54 %, 75.00 ± 10.83%, 43.75 ± 12.40% of patients, respectively, against «zero» values in healthy donors) and also signs of immunosuppression at normal plasma concentrations of HIF-1alpha were determined in diseases associated with chronic hypoxia (in patients with CHD, COPD, TB). Immunological insufficiency in CHD and TB is caused by a deficiency of IFN-gamma and galectin-2 in association with an excess of galectin-9 (in patients with CHD 1.10 [0.52; 2.60] pg/ml p = 0.038) or IL-13 (in patients with TB 0.81 [0.79; 1.40] pg/ml, p = 0.043), and in patients with COPD it is caused by a surplus of galectin-9 and IL-13 (8.50 [3.96; 15.00] pg/ml, p = 0.001 and 2.62 [1.20; 7.58] pg/ml, p = 0.002, respectively) at normal concentrations of IFN-gamma and galectin-2. The content of IL-10 in the blood tends to increase in CHD and COPD.Conclusion. In patients with CHD, COPD and TB, chronic hypoxia is associated with immunosuppression mediated by an imbalance of IL-10, IL-13, IFN-gamma, galectins (2 and 9) in the blood and the secretion of HIF-2alpha, which has the property to stimulate the differentiation of M2-macrophages synthesizing anti-inflammatory cytokines.

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