[2, 3, 5, 4'-tetrahydroxystilbene-2-O-β-d-glucoside alleviates lipopolysaccharide-induced acute lung injury in rats].

Abstract

OBJECTIVE:

To observe the protective effect of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-β-d-glucoside (TSG) against lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats and explore the underlying mechanism.

METHODS:

Thirty-six SD rats were randomized equally into 4 groups: the normal control group, ALI model group, and low- and high-dose TSG groups (treated with 50 and 100 mg/kg TSG via intragastric administration, respectively). In all but the normal control group, the rats were subjected to tail vein injection of LPS to induced ALI. The rats were euthanized at 6 h after the injection for pathological examination of the lungs. The wet/dry weight ratio (W/D) of the lungs were calculated, and superoxide dismutase (SOD) activity and malondialdehyde (MDA) content in the lung tissues and serum levels of TNF-α and IL-6 were determined. Western blotting was performed to detect the levels of NF-κB p65 in the lungs.

RESULTS:

Compared with those in LPS group, the TSGtreated rats showed significantly milder lung pathologies (P < 0.001) and had lower serum TNF-α and IL-6 levels (P < 0.001) and W/D of the lung tissues (P < 0.001), higher SOD activity (P < 0.001) and lower MDA content in the lungs (P < 0.001), and significantly lower expression of NF-κB p65 in the lungs (P < 0.001). None of these indices showed significant differences between the lowand high-dose TSG treatment groups (P>0.05).

CONCLUSIONS:

TSG can ameliorate LPS-induced ALI in rats possibly by suppressing the NF-κB pathway to improve the antioxidant capacity and decrease the release of inflammatory factors.

• Authors: J Chen, H Liu
• Journal: Nan fang yi ke da xue xue bao = Journal of Southern Medical University (Nan Fang Yi Ke Da Xue Xue Bao) Vol. 41 Issue 7 Pg. 1101-1106 (Jul 20 2021) ISSN: 1673-4254 [Print] China
• PMID: 34308863 (Publication Type: Journal Article)

Chemical References

• Glucosides
• Lipopolysaccharides
• NF-kappa B

Topics

• Acute Lung Injury (chemically induced, drug therapy)
• Animals
• Glucosides (pharmacology, therapeutic use)
• Lipopolysaccharides
• Lung
• NF-kappa B
• Rats
• Rats, Sprague-Dawley