OBJECTIVE
To analyze cytokine profile and oxidative stress markers in patients with polypous rhinosinusitis under LILI and MDM therapy combined with dupilumab.
MATERIAL AND METHODS
The study included 128 patients with moderate, severe and uncontrollable course of polypous rhinosinusitis. All patients received basic therapy with mometasone 2 doses 2 times a day and daily washing of nasal mucosa with saline. All patients were randomized into 4 groups: group 1 (control, n=32) — BT alone; group 2 (comparison group 1, n=32) — additional dupilumab 300 mg subcutaneously daily every two weeks; group 3 (comparison group 2, n=32) — low-intensity laser irradiation (LILI) along with BT and dupilumab; group 4 (main, n=32) — LILI and MDM therapy in addition to dupilumab. Clinical efficacy was assessed considering nasal polyposis severity (Lund-Mackay and Meltzer scales) and QoL (SNOT-22 questionnaire). Changes in cytokine status were determined considering serum proinflammatory interleukins (IL-4, IL-5, IL-13). IgE and eosinophilic cationic protein were additionally studied. Analysis of oxidative stress implied assessment of lipid peroxidation products and activity of antioxidant enzymes. Clinical and laboratory status was assessed before treatment, 1 and 6 months after therapy.
RESULTS
We observed pathogenetic role of proinflammatory interleukins (IL-4; -5; -13) and oxidative stress patterns for nasal polyposis. High activity of dupilumab in blocking the expression of IL-4 and IL-13 was established. Additional physical factors increase inhibitory effect on proinflammatory mediators, as well as reduce accumulation of lipid peroxidation products. The relationship between oxidative stress patterns and activity of proinflammatory cytokines in pathogenesis of polypous rhinosinusitis was presented.
CONCLUSION
The relationship between oxidative stress markers and proinflammatory protein factors proves their ability to mutually reinforce each other and contribute to chronic inflammatory process in nasal cavity. Therapeutic physical factors (LILI and MDM) combined with dupilumab are accompanied by suppression of trigger mechanism of type 2 inflammation and reduce accumulation of primary and secondary lipid peroxidation products.