动物造模,炎症后肠易激综合征 z-bio 2022-11-16 522

　　Objective: To find biological indicators for the diagnosis and treatment of irritable bowel syndrome (IBS).

　　Methods: The post-inflammatory irritable bowel syndrome (PI-IBS) animal model was established by acetic acid plus restraint stress method; the colon motility index (MI), the number of fecal particles excreted within 2 hours and the excretion time of glass pellets were used to evaluate Colon motility of rats; observed the formation of PI-IBS model rats and the therapeutic effect of Wuji Pills on it; ELISA method was used to detect calcitonin gene-related peptide (CGRP) in brain and colon tissue of PI-IBS rats , motilin (MTL), neuropeptide Y (NPY), substance P (SP), somatostatin (SS), vasoactive intestinal peptide (VIP), cholecystokinin (CCK) levels.

　　RESULTS: The PI-IBS rat model was successfully established. The body weight of model rats decreased; food intake decreased; defecation increased; loose stools and amorphous soft stools; voluntary exercise decreased; colonic MI increased significantly (P ＜ 0.05); the number of fecal particles excreted by rats increased significantly (P < 0.05); the discharge time of glass pellets was significantly shortened (P < 0.05). Wuji Pills can significantly improve the above symptoms after 7 days of treatment. Compared with the normal control group, the levels of CGRP, SS and VIP in the brain tissue of PI-IBS rats were significantly increased (P ＜ 0.05), and the concentration of NPY was significantly decreased (P ＜ 0.05). It can significantly reduce the concentration of CGRP, SS and VIP (P < 0.05), and significantly increase the concentration of NPY (P < 0.05). Compared with the normal control group, CCK, NPY, MTL, SS and VIP in the colon tissue of PI-IBS rats were significantly decreased (P < 0.05); Wuji pills could significantly increase the levels of CCK and VIP (P < 0.05). P < 0.05).

　　Conclusion: Wuji Pills can be used to treat IBS by regulating the levels of various brain-gut peptides in the brain and colon tissue of IBS rats. These regulated and abnormally changed brain-gut peptides can become potential biological agents for the diagnosis and treatment of IBS. index.