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We studied clinical status, content of products of LPO, and oxidative modification of proteins (OMP) in the lesion focus of the intestine in experimental colitis under conditions of rectal administration of ozone. Experimental colitis was simulated by two-stage administration of oxazolone; rectal insufflation of ozone in the ozone-oxygen mixture was performed daily. The disease activity index (DAI), the content of calprotectin in the feces, and LPO and OMP products in the intestinal homogenate were assessed. On days 2, 4, and 6 of the pathological process, DAI, concentration of calprotectin in feces, content of primary, secondary, and end-products of LPO in the heptane and isopropanol phases, and content of primary and secondary OMP products progressively increases. Under conditions of ozone application, DAI, concentration of calprotectin in feces, the levels of heptane- and isopropanol-soluble primary, secondary, and end-products of LPO, and the level of primary and secondary products of OMP decreased on days 4 and 6; the level of isopropanol-soluble primary, secondary, end-products of LPO increased on day 2 of experimental colitis. The severity of clinical manifestations weakens as the content of LPO and OMP products in the colon decreases on days 4 and 6 of observation. |
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