Methyl Protodioscin from the Roots of Asparagus cochinchinensis Attenuates Airway Inflammation by Inhibiting Cytokine Production
2015; Hindawi Publishing Corporation; Volume: 2015; Linguagem: Inglês
10.1155/2015/640846
ISSN1741-4288
AutoresJu Hee Lee, Hun Jai Lim, Chan Woo Lee, Kun-Ho Son, Jong‐Keun Son, Sang Kook Lee, Hyun Pyo Kim,
Tópico(s)Natural product bioactivities and synthesis
ResumoThe present study was designed to find pharmacologically active compound against airway inflammation from the roots of Asparagus cochinchinensis . The 70% ethanol extract of the roots of A. cochinchinensis (ACE) was found to inhibit IL-6 production from IL-1 β -treated lung epithelial cells (A549) and the major constituent, methyl protodioscin (MP), also strongly inhibited the production of IL-6, IL-8, and tumor necrosis factor- (TNF-) α from A549 cells at 10–100 μ M. This downregulating effect of proinflammatory cytokine production was found to be mediated, at least in part, via inhibition of c-Jun N-terminal kinase (JNK) and c-Jun activation pathway. When examined on an in vivo model of airway inflammation in mice, lipopolysaccharide- (LPS-) induced acute lung injury, ACE, and MP significantly inhibited cell infiltration in the bronchoalveolar lavage fluid by the oral treatment at doses of 100–400 mg/kg and 30–60 mg/kg, respectively. MP also inhibited the production of proinflammatory cytokines such as IL-6, TNF- α , and IL-1 β in lung tissue. All of these findings provide scientific evidence supporting the role of A. cochinchinensis as a herbal remedy in treating airway inflammation and also suggest a therapeutic value of MP on airway inflammatory disorders.
Referência(s)