Ethyl Acetate Extract of Vaniot Attenuates Oxidative Stress in ALI Mice.

PURPOSE

Acute lung injury (ALI) is a serious clinical respiratory disease, but there are few effective drugs for ALI. As a natural product, is used as a drink and medicine in ethnic minority areas of Southwest China. In previous studies, we found that Vaniot methanol extract (EBE) was effective against ALI. This study was carried to investigate the role and mechanisms of EBE ethyl acetate extract (EBEE) against oxidative stress in ALI.

METHODS

By multiple bioinformatics analysis, AGER and ITGB2 were found to be the potential target genes of EBEE against oxidative stress in ALI. Different doses of EBEE were feed into ALI mice in vivo (600 mg/kg bw, 200 mg/kg bw) and .RAW 264.7 cells (100 μg/mL, 25 μg/mL) in vitro to evaluate the protection function. Western Blot, immunofluorescence and biochemical factor detection were used to measure the levels of oxidative stress associated factors, and gut microbiota analysis examined the gut microbiota in mice.

RESULTS

EBEE, which contained a total of 1374 components, was identified as the most active against oxidative stress. The EBEE treatment most significantly downregulated the ROS, MDA and pathological damages. AGER and ITGB2 were picked up as target genes of EBEE against ALI by bioinformatics. In vitro and in vivo, AGER, NOX4, and P-GSK3β expression levels were significantly decreased, and ITGB2, P-AKT, NRF2 and HO-1 were significantly up-regulated throughout EBEE treatment. By consuming EBEE, significantly increased, while the pernicious bacteria significantly reduced in ALI mouse.

CONCLUSION

EBEE treatment significantly ameliorated the pathological damage and oxidative stress by regulating AGER, ITGB2 and related pathways in vitro and in vivo. Furthermore, EBEE treatment improved the composition of the gut microbiota in ALI mice. These data suggested that EBEE could be used as a potential functional food for prevention and treatment of ALI.