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2015 ; 5
(ä): 15282
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Hirsutella sinensis mycelium attenuates bleomycin-induced pulmonary inflammation
and fibrosis in vivo
#MMPMID26497260
Huang TT
; Lai HC
; Ko YF
; Ojcius DM
; Lan YW
; Martel J
; Young JD
; Chong KY
Sci Rep
2015[Oct]; 5
(ä): 15282
PMID26497260
show ga
Hirsutella sinensis mycelium (HSM), the anamorph of Cordyceps sinensis, is a
traditional Chinese medicine that has been shown to possess various
pharmacological properties. We previously reported that this fungus suppresses
interleukin-1? and IL-18 secretion by inhibiting both canonical and non-canonical
inflammasomes in human macrophages. However, whether HSM may be used to prevent
lung fibrosis and the mechanism underlying this activity remain unclear. Our
results show that pretreatment with HSM inhibits TGF-?1-induced expression of
fibronectin and ?-SMA in lung fibroblasts. HSM also restores superoxide dismutase
expression in TGF-?1-treated lung fibroblasts and inhibits reactive oxygen
species production in lung epithelial cells. Furthermore, HSM pretreatment
markedly reduces bleomycin-induced lung injury and fibrosis in mice. Accordingly,
HSM reduces inflammatory cell accumulation in bronchoalveolar lavage fluid and
proinflammatory cytokines levels in lung tissues. The HSM extract also
significantly reduces TGF-?1 in lung tissues, and this effect is accompanied by
decreased collagen 3?1 and ?-SMA levels. Moreover, HSM reduces expression of the
NLRP3 inflammasome and P2X7R in lung tissues, whereas it enhances expression of
superoxide dismutase. These findings suggest that HSM may be used for the
treatment of pulmonary inflammation and fibrosis.