Kyrian O. A.

PECULIARITIES OF THE RELATIONSHIP BETWEEN MICROBIOME, MATRIX METALLOPROTEINASES AND MORPHOLOGICAL CHANGES OF EPITHELIUM IN PATIENTS WITH FUNCTIONAL AND ORGANIC INTESTINAL PATHOLOGY

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About the author:

Kyrian O. A.

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CLINICAL AND EXPERIMENTAL MEDICINE

Type of article:

Scientific article

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Intestinal dysbiosis has recently been considered as one factor that significantly impacts the development of both functional and organic intestinal pathology. Therefore, determining the relationships between the microbiota, morphological changes in the epithelium, and immune abnormalities that may occur under the influence of microbiotic disorders can help to identify a predisposition to intestinal diseases and correct treatment in a timely manner. The aim of our study was to investigate in patients with irritable bowel syndrome (IBS), ulcerative colitis (UC) and adenomatous colon polyps (ACP) in Poltava Region the possibility of a relationship between intestinal dysbiosis activity of matrix metalloproteinases -1,-3,-9, tissue inhibitor of matrix metalloproteinases-1 in blood serum, morphological changes and the degree of accumulation of mucins MUC1 and MUC5AC in the intestinal epithelium. The study was conducted in 127 patients with IBD, UC, and ACP; the control groups consisted of 34 healthy individuals and 18 patients with CRC. The most pronounced abnormalities in the microbiota were found in patients with UC with high disease activity (p≤0.05), in the general group of patients with UC (p≤0.01) (r=0.69) and in patients with CP that occurred on the background of IBS compared to the groups of IBS and CP (p≤0.05) (r=0.88). In dysbiosis of II and III degrees, the amount of MMP-1 in the blood increased in all patients, most pronouncedly in UC (p≤0.001) and with high UC activity (p≤0.01). The average content of MMP-9 in all patients went beyond the range of fluctuations of reference values, most pronounced in UC (p≤0.01) (r=+0.61). Among the examined groups, the association of dysbiosis of II and III degrees with severe acuteness of the CM lesion in UC (p≤0.05) and a sharp decrease in the PAS response of goblet cells (p≤0.05) and with moderate acuteness of the process in IBS (p≤0.001) was revealed. In patients with UC with II and III degrees of dysbiosis, the frequency of detection of weak or absent MUC1 expression in the crypt epithelium significantly increased compared with the first degree of dysbiosis (p≤0.05), which worsened the protective functions of the intestinal mucosal barrier. The data obtained indicate the presence of a relationship between the increase in the degree of dysbiosis, the quantitative content of serum matrix metalloproteinases MMP-1,-9 and the increase in the severity of colon epithelial damage, most pronounced in patients with UC. The detected changes have a negative prognosis for the course and progression of intestinal diseases and require the development of corrective therapy.

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Bibliography:

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Publication of the article:

«Bulletin of problems biology and medicine», 2024 Issue 1, 172, 168-179 pages, index UDC 616.34-092-071:611.018

DOI:

10.29254/2077-4214-2024-1-172-168-179