摘要
AIM To investigate the mechanism of the rhubarb on gut barrier protection. METHODS The models of gut barrier damage caused by hemorrhagic shock and intraperitoneal endotoxin were used to study the protective effect of rhubarb on the barrier of intestinal mucosa. They were randomly divided into four groups: treatment (rhubarb) group; positive control group; negative control group; placebo treatment group. The concentration of plasma endotoxin, tissue superoxide dismutase and lipoperoxide were measured. The histological analysis was also used. The effect of rhubarb on gut protection was observed. RESULTS The rhubarb could decrease intestinal permeability, attenuate endotoxin absorption within the gut, (the content of endotoxin in serum: shock group 0 557EU/ml±0 069EU/ml vs rhubarb group 0 345EU/ml±0 055EU/ml), obviously decrease the consumption of tissue SOD and the formation of tissue LPO (the content of SOD in serum, intestine and liver: endotoxin group 122 92NU/ml±43 19NU/ml, 292 24NU/ml±88 76NU/ml, 272 70NU/ml±85 79NU/ml vs rhubarb group 312 23NU/ml±54 93NU/ml, 391 09NU/mg±98 16NU/mg, 542 86NU/mg±119 93NU/mg; The content of LPO in intestine and liver: endotoxin group 8 57μmol/L±2 58μmol/L, 86 97μmol/L±46 54μmol/L vs rhubarb group 3 05μmol/L±1 13μmol/L, 13 18μmol/L±19 64μmol/L). Gut histopathology revealed that rhubarb could promote proliferation of gut goblet cells, increase secretion of mucus and protect intestinal mucosa in hemorrhagic shock model. CONCLUSION The mechanism of the rhubarb on gut barrier protection might involve in decreasing intestinal permeability, scavenging oxygen free radicals, promoting proliferation of goblet cells within intestinal mucosa.
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