Dynamics of quantitative changes of diffuse lymphoid tissue cells of bronchi and lungs of guinea pigs sensitized with ovalbumin

Authors

DOI:

https://doi.org/10.26641/1997-9665.2021.2.53-58

Keywords:

diffuse lymphoid tissue, lung, ovalbumin, allergic inflammation, guinea pig

Abstract

Background. There is a progressive increase of respiratory allergic diseases nowadays in the world, made it necessary to study the participation of the components of the immune system in these processes. From the point of view of modern aspects about the organs of the immune system, interesting are the patterns of morphogenesis and function of bronchus associated lymphoid tissue, occupied a special place in the immunological protection of the body due to the large area of contact with various antigens. Morphogenesis and reactive changes in the local immunity in respiratory system in conditions of allergic inflammation remain urgent issue of modern morphology. Objective. To study the changes in diffuse lymphoid tissue of bronchi and lungs of guinea pigs sensitized with ovalbumin. Methods. We have studied the lung of 48 guinea pigs, using histological, immunohistochemical, morphometric, statistical methods, under conditions of experimental ovalbumin-induced allergic inflammation, assessed the average number of lymphocytes, macrophages and plasma cells in the diffuse lymphoid tissue. Results. The average number of lymphocytes in diffuse lymphoid tissue of bronchi and lungs increased from the 23rd day of observation and remained at a high level until the end of the experiment, the maximum was during the early period of the development of allergic inflammation, the increasing coefficient was 4.7. The average number of plasma cells also acquired maximum elevation in the early period of allergic process, the increasing coefficient was 2.0. The most significant average number of macrophages was on the 23rd day of observation with same increasing coefficient. Among all types of immunocompetent cells of diffuse lymphoid tissue in bronchi and lungs, T-lymphocytes prevailed during the experiment elevated almost by 5 times. Conclusions. In the early period of development of experimental ovalbumin-induced allergic inflammation, the specific resistance of the respiratory system manifests itself in the form of activation of local links of cellular and humoral adaptive immunity, as evidenced by the dynamics of changes in the average number of lymphocytes (the maximum increasing coefficient 4.7 in the 1st experimental group), macrophages and plasma cells (maximum increasing coefficient 2.0 in the 1st experimental group) of diffuse lymphoid tissue of bronchi and lungs of guinea pigs.

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Published

2021-12-21

How to Cite

Dynamics of quantitative changes of diffuse lymphoid tissue cells of bronchi and lungs of guinea pigs sensitized with ovalbumin. (2021). Морфологія / Morphologia / Morfologìâ, 15(2), 53–58. https://doi.org/10.26641/1997-9665.2021.2.53-58

Issue

Vol. 15 No. 2 (2021)

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Статті

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