Mechanistic study of the therapeutic effect of berberine on ulcerative colitis in mice based on the Bak/Bax/Caspase-9 pathway
Objective:This study aimed to investigate the protective effect of berberine on mice with ulcerative colitis(UC)and the involvement of the Bak/Bax/Caspase-9 pathway.Methods:A total of thirty-two C57BL/6 mice were divided into four groups:normal group,model group,mesalazine group,and berberine group.The mice were randomly assigned to these groups for the study.The UC mouse model was induced in all groups using 3%dextran sulfate sodium salt(DSS).Disease activity index(DAI)score and body weight were recorded daily.Colon length and spleen index were measured.HE staining examined colon and spleen tissue changes.Bak,Bax,and Caspase-9 mRNA/protein expression in colon was measured via qRT-PCR/Western blot.Results:Compared to the model group,the berberine group exhibited a significant reduction in the DAI score and spleen index(P<0.05),along with improved colon and spleen pathological damage,there were significant increases in percentage of body weight change and colon length(P<0.01),mRNA and protein expression of Bak,Bax,and Caspase-9 in co-lon tissues were significantly decreased in the berberine group(P<0.05).Conclusion:Berberine reduced inflam-mation and improved colon and spleen pathological damage in UC mice,potentially through modulation of the Bak/Bax/Caspase-9 pathway.