Biomol Ther.  2018 Nov;26(6):553-559. 10.4062/biomolther.2017.249.

Therapeutic Potential of the Rhizomes of Anemarrhena asphodeloides and Timosaponin A-III in an Animal Model of Lipopolysaccharide-Induced Lung Inflammation

Affiliations
  • 1College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea. hpkim@kangwon.ac.kr
  • 2Department of Food and Nutrition, Andong National University, Andong 36729, Republic of Korea.
  • 3Gyeongbuk Institute for Bio Industry, Andong 36618, Republic of Korea.

Abstract

Investigations into the development of new therapeutic agents for lung inflammatory disorders have led to the discovery of plant-based alternatives. The rhizomes of Anemarrhena asphodeloides have a long history of use against lung inflammatory disorders in traditional herbal medicine. However, the therapeutic potential of this plant material in animal models of lung inflammation has yet to be evaluated. In the present study, we prepared the alcoholic extract and derived the saponin-enriched fraction from the rhizomes of A. asphodeloides and isolated timosaponin A-III, a major constituent. Lung inflammation was induced by intranasal administration of lipopolysaccharide (LPS) to mice, representing an animal model of acute lung injury (ALI). The alcoholic extract (50-200 mg/kg) inhibited the development of ALI. Especially, the oral administration of the saponin-enriched fraction (10-50 mg/kg) potently inhibited the lung inflammatory index. It reduced the total number of inflammatory cells in the bronchoalveolar lavage fluid (BALF). Histological changes in alveolar wall thickness and the number of infiltrated cells of the lung tissue also indicated that the saponin-enriched fraction strongly inhibited lung inflammation. Most importantly, the oral administration of timosaponin A-III at 25-50 mg/kg significantly inhibited the inflammatory markers observed in LPS-induced ALI mice. All these findings, for the first time, provide evidence supporting the effectiveness of A. asphodeloides and its major constituent, timosaponin A-III, in alleviating lung inflammation.

Keyword

Anemarrhena asphodeloides; Timosaponin A-III; Lung inflammation; Cytokine

MeSH Terms

Acute Lung Injury
Administration, Intranasal
Administration, Oral
Alcoholics
Anemarrhena*
Animals*
Bronchoalveolar Lavage Fluid
Herbal Medicine
Humans
Lung*
Mice
Models, Animal*
Plants
Pneumonia*
Rhizome*
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