Peritoneal remodeling and changes in its lymphoid component in experimental modeling of adhesion disease in rats

Authors

DOI:

https://doi.org/10.15587/2519-8025.2024.301278

Keywords:

peritoneum, gastrointestinal tract, lymphocytes, immunity, histological changes, rats, morphometry, microscopy, immune system, adhesion disease

Abstract

Age changes, inflammatory processes, surgical interventions and heterogeneous pathological effects on the physiological processes of the peritoneum lead to certain changes in the structure of the components of the peritoneum, which leads to remodeling of the tissue structures of the abdominal cavity. According to the literature, the most frequent consequence of such remodeling of tissue structures of the peritoneum is the development of an adhesion process. To date, there are no data on the study of the lymphoid component of mesentery tissues, which is the goal of further research.

The purpose of the work: to study the process of remodeling of peritoneal tissue during experimental adhesion formation and the specificity of changes in its lymphoid component in rats compared to the norm.

Research materials and methods: preparation, macroscopic, microscopic, histological (production of film preparations), staining of preparations with hematoxylin and eosin, mathematical (morphometric grids - counting the number of immunocompetent cells per 1000 μm2 standard area), statistical processing according to Student.

Results: experimental adhesion disease is characterized by a gradual process of remodeling of the mesenteric tissues of the small intestine and, as a result, the formation of connective tissue neoplasms. The mesentery of the small intestine loses its elasticity and mobility and thickens considerably. The process of experimental adhesion formation was accompanied by dynamic changes in the number of lymphocytes.

Conclusions: these structures are thin and homogeneous on the 7th day; hard, dense and granular on the 14th day; contain solid conglomerates of heterogeneous structures on the 21st day after talc injection. The number of lymphocytes in this structure gradually increases: on day 7 - by 2 % in animals of group II, on day 14 - by 30 % in animals of group III, and on day 21 - by 36 % in animals of group IV, compared to animals of the intact group

Author Biographies

Anastasia Paidarkina, Zaporizhzhia National University

Postgraduate Student

Departments of Physiology, Immunology and Biochemistry with a Course in Civil Defense and Medicine

Oksana Kushch, Zaporizhzhia National University

Doctor of Biological Sciences, Professor

Departments of Physiology, Immunology and Biochemistry with a Course in Civil Defense and Medicine

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Peritoneal remodeling and changes in its lymphoid component in experimental modeling of adhesion disease in rats

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Published

2024-03-31

How to Cite

Paidarkina, A., & Kushch, O. (2024). Peritoneal remodeling and changes in its lymphoid component in experimental modeling of adhesion disease in rats. ScienceRise: Biological Science, (1 (38), 10–16. https://doi.org/10.15587/2519-8025.2024.301278

Issue

No. 1 (38) (2024)

Section

Biological research

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Copyright (c) 2024 Anastasia Paidarkina, Oksana Kushch

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