Expression of aryl hydrocarbon receptor and ATG16L1 protein in experimental oxazolone-induced colitis in rats.

We studied the expression of AhR and ATG16L1 protein in experimental oxazolone-induced colitis in rats and anti-inflammatory action of recombinant antagonist of IL-1 receptors (ARIL-1) and simvastatin. The immunopositive cells were determined using an indirect immunofluorescence technique with using a monoclonal rat antibody. It has been established that development of colitis was accompanied by an increase of total number of ATG16L1-lymphocytes (by 30%, P < 0.05) in lymphoid structures of the colon. However the amount of AhR(+)-lymphocytes has not changed. At the same time has increased the concentration of ATG16L1 protein (by 4-11%, P < 0.05) in immunopositive cells. Administration of simvastatin and ARIL-1 during the development of experimental pathology was accompanied by decrease of total number of AhR(+) (by 24-38%, P < 0.05) and ATG16L1(+)-lymphocytes (by 43% - 2 fold, P < 0.05) in the colon.

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