Zhang ZQ, Wang YQ, Dong M, Cui JC, Rong DQ, Dong Q. Oxymatrine induces the expression of transmembrane protein claudin-1 in the intestinal mucosa of rats with severe acute pancreatitis.
Shijie Huaren Xiaohua Zazhi 2011;
19:510-514. [DOI:
10.11569/wcjd.v19.i5.510]
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Abstract
AIM: To investigate the effect of oxymatrine (OM) on intestinal mucosal barrier dysfunction in rats with severe acute pancreatitis (SAP) and to analyze possible mechanisms involved.
METHODS: A rat model of SAP was established by peritoneal injection of 175 mg/100 g L-arginine. Eighty healthy male Wistar rats were divided randomly into four groups: control group, OM control group, SAP control group, OM treatment group (1-, 12-, 24-, 36-, and 48-h subgroups). After treatment, plasma endotoxin and D-lactic acid levels were determined, the expression of claudin-1 mRNA in the tunica mucosa coli was detected by real-time polymerase chain reaction (real time-PCR), and the activity of claudin-1 was determined by Western blotting.
RESULTS: There were no significant differences in plasma levels of endotoxin and D-lactic acid and expression levels of claudin-1 mRNA and protein in the tunica mucosa coli between the control group and OM control group. Compared with the control group, plasma endotoxin and D-lactic acid levels were markedly increased, and the expression levels of claudin-1 mRNA and protein in the tunica mucosa coli were significantly decreased in the SAP control group (0.61 EU/mL ± 0.01 EU/mL vs 0.05 EU/mL ± 0.02 EU/mL; 8.38 mg/L ± 0.38 mg/L vs 2.87 mg/L ± 0.50 mg/L, both P < 0.01). Compared with the SAP control group, the expression levels of claudin-1 mRNA and protein in the tunica mucosa coli were significantly increased and plasma levels of endotoxin and D-lactic acid were markedly decreased in the OM treatment group (0.09 EU/mL ± 0.02 EU/mL vs 0.61 EU/mL ± 0.01 EU/mL; 2.94 mg/L ± 0.42 mg/L vs 8.38 mg/L ± 0.38 mg/L, both P < 0.01).
CONCLUSION: Plasma levels of endotoxin and D-lactic acid were markedly increased and expression levels of claudin-1 mRNA and protein in tunica mucosa coli were significantly decreased in SAP rats. OM intervention can markedly decrease plasma levels of endotoxin and D-lactic acid, increase claudin-1 mRNA and protein expression levels, and improve mucosal barrier dysfunction to prevent bacterial translocation in SAP rats.
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