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Aim. A generalized analysis of changes in functional activity of macrophages on the basis of phagocytic activity, cytokine profile, changes in the level of expression of surface markers characteristic of pro - or anti-inflammatory phenotype of the cells when exposed to reluctate. Materials and methods. Developed in vitro model of co-peritoneal macrophages of mice With57/BL6 (n=65) and reluctate patients with gastroesophageal reflux disease (GERD; n=65) having different pH values (three group comparison). Took into account the standard criteria phagocytic ability (absorption Staphylococcus aureus 9198, light microscopy), secretory activity (cytokine profile Th1/Th2, flow cytometry) and receptor characterization of macrophages (expression of CD25/80/163/206, flow cytometry). Results. The phagocytic activity of macrophages, calculated on the basis of the average number of bacteria ingested by one phagocyte, is not associated with the pH value of the added reluctate. It is established that the alkalinisation of reluctate leads to significant alteration in the expression of CD receptors - decrease M1 and increase M2. The index of total production of Th1/Тһ2 in groups progressively decreased with increasing pH of reluctate and amounted to 3.6 units in the group pH from 4.6 to 6.6; 2.8 units group a pH of 6.7-7.2 and 1.6 units in the group pH of 7.3 to 8.1, due to increased production of Th2 cytokines at offset reluctate pH to slightly alkaline side. The data obtained indicate the increase of expression and secretion of anti-inflammatory markers at an alkaline pH shift of reluctate. Analysis of the studied characteristics of the activity profile of macrophages in the proposed in vitro model justifies the need for considering the peculiarities of the functional activity of macrophages under the influence of reluctate different nature. The special importance of studying the cytokine profile and characteristics of the functional activity of macrophages in patients with GERD, given the nature of reluctate.

The review presents modern data on the cellular and molecular mechanisms of inflammatory changes of esophageal mucosa exposed to different types of reluctate (gastric, biliary or duodenal/mixed). The authors describe data on key mediators of inflammation in gastroesophageal reflux disease (GERD) and their major cellular sources, changes of the immune profile of patients. Discusses the possible impact of changes in the cellular and molecular components in the development of the inflammatory response in the esophagus on the clinical features of GERD and its therapy-refractory forms.

Aim. To test the hypothesis that an impaired pulmonary immune response in asthma, gastroesophageal reflux disease (GERD) and their concurrence of these diseases is largely determined by disordered alveolar macrophage (AM) reprogramming and to assess the pulmonary immune response and an AM phenotype in patients with asthma, GERD and their concurrence. Subjects and methods. The levels of proinflammatory M1 cytokines, such as IL-1β, IL-8, IL-12p70, IFN-γ, TNF-α, and TNF-β, anti-inflammatory М2 cytokines, such as IL-4, IL-5, and IL-10, and bivalent М1/М2 cytokines, such as IL-2 and IL-6, were determined in bronchoalveolar lavage fluid (BALF) and AM culture medium. Results. Serious deformations in the pulmonary immune response were first detected in patients with mixed pathology towards to an anti-inflammatory M2 phenotype. The change in the pulmonary immune response phenotype in GERD towards M1 and in comorbidity towards M2 was coincident with that of the AM phenotype. In asthma, the change in the pulmonary immune response phenotype occurred towards to M2 and that in the intrinsic AM phenotype did towards M1. This phenotype is likely to form a proinflammatory component and to cause an asthma exacerbation. Conclusion. Analysis of the spectrum of cytokines in BALF and produced by macrophages in asthma, GERD and their concurrence validated the hypothesis that impaired pulmonary immune responses in these diseases are associated with disordered AM reprogramming. The findings also suggest that therapy for the inflammatory component in these diseases should be performed by taking into account the specificity of the cytokine structure of an immune response and the phenotypic heterogeneity of immune cells.

Combination of bronchial asthma (BA) with gastroesophageal reflux disease (GRD) is now most prevalent among combined pathology of the respiratory and gastrointestinal tracts. Interaction of these diseases is stated basing on clinical picture and pathogenetic aspects of BA development in the presence of GRD and GRD in the presence of BA. Development of combined affection of gastrointestinal and respiratory tracts occurs in secondary immunodeficiency. Main lines of the paradigm of macrophage phenotypes M1/M2 and mechanisms of alternative development of the immune response Th1/Th2 in combination of GRD with BA are presented. Investigation of macrophage functional activity and Th1/ Th2 balance gives ground for development of the method of macrophage phenotype reprogramming which is a promising approach to effective treatment of combined pathology of the respiratory tract and upper gastrointestinal tract including cases resistant to pharmacological treatment.