Protective effect of Amomum Roxb. essential oils in lipopolysaccharide-induced acute lung injury mice and its metabolomics.

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE:

Several Amomum species are commonly used in food as flavoring agents and traditional Chinese medicine to treat inflammation-related diseases.

AIM OF THE STUDY:

This study aims to investigate the protective effects of Chinese herbal medicines, including six Amomum Roxb. essential oils (AEOs), against acute lung injury (ALI) induced by lipopolysaccharide (LPS) in mice.

MATERIALS AND METHODS:

The compositions of AEOs were analyzed using gas chromatography - mass spectrometry. RAW264.7 cells were treated with AEOS (0-100 μg/mL) and stimulated with LPS. C57 mice received AEOs (100 mg/kg) via atomization system for seven consecutive days, and then, intratracheal instillation of LPS was applied to establish an in vivo model of acute lung injury.

RESULTS:

We identified three AEOs demonstrating anti-inflammatory effects and amelioration of LPS-induced lung tissue pathological damage. Furthermore, we found that these AEOs reduced lung wet/dry weight ratios and protein concentrations in the bronchoalveolar lavage fluid of mice with LPS-induced ALI. Additionally, AEOs reduced the levels of malondialdehyde, TNF-α, IL-6, and IL-1β but increased the levels of superoxide dismutase and catalase in lung tissue, alveolar lavage fluid, and serum samples. We also found that these three AEOs affected proteins related to the TLR4/Myd88/NF-κB pathway.

CONCLUSIONS:

In summary, our findings revealed that AEOs ameliorate inflammatory and oxidative stress in mice with ALI through the TLR4/Myd88/NF-κB pathway.

• Authors: Kai Zhao, Xuetong Li, Jingru Yang, Zebin Huang, Chunlian Li, Huarong Huang, Kun Zhang, Dongli Li, Lanyue Zhang, Xi Zheng
• Journal: Journal of ethnopharmacology (J Ethnopharmacol) Vol. 290 Pg. 115119 (May 23 2022) ISSN: 1872-7573 [Electronic] Ireland
• PMID: 35182669 (Publication Type: Journal Article)
• Copyright: Copyright © 2022 Elsevier B.V. All rights reserved.

Chemical References

• Inflammation Mediators
• Lipopolysaccharides
• Membrane Glycoproteins
• NF-kappa B
• Oils, Volatile
• Toll-Like Receptor 4
• Catalase
• Superoxide Dismutase

Topics

• Acute Lung Injury (chemically induced, pathology)
• Amomum
• Animals
• Bronchoalveolar Lavage Fluid (chemistry)
• Catalase (drug effects)
• Cell Survival (drug effects)
• Disease Models, Animal
• Inflammation Mediators (metabolism)
• Lipopolysaccharides (pharmacology)
• Lung (drug effects)
• Male
• Membrane Glycoproteins (drug effects)
• Metabolomics
• Mice
• Mice, Inbred C57BL
• NF-kappa B (drug effects)
• Oils, Volatile (pharmacology)
• RAW 264.7 Cells
• Random Allocation
• Superoxide Dismutase (drug effects)
• Toll-Like Receptor 4 (drug effects)