Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was establish...Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was established on the basis of spectral analysis.展开更多
The present study was designed to evaluate the protective effects of ethanol extracts of Rabdosia japonica var. glaucocalyx(Maxim.) Hara(RJ) on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in mice and the po...The present study was designed to evaluate the protective effects of ethanol extracts of Rabdosia japonica var. glaucocalyx(Maxim.) Hara(RJ) on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in mice and the possible underlying mechanisms of action. The mice were orally administrated with RJ extract(16, 32 or 64 mg?kg–1) daily for consecutive7 days before LPS challenge. The ung specimens and the bronchoalveolar lavage fluid(BALF) were collected for histopathological examinations and biochemical analyses. Pretreatment with RJ significantly enhanced superoxide dismutase(SOD) activity and reduced the wet-to-dry weight(W/D) ratio, the levels of nitric oxide(NO) and protein leakage, and myeloperoxidase(MPO) activity in mice with ALI, in a dose-dependent manner. RJ reduced complement deposition and significantly attenuated LPS-induced ALI by reducing productions of inflammatory mediators, such as tumor necrosis factor-α(TNF-α), interleukin-6(IL-6), and interleukin-1β(IL-1β). The results demonstrated that RJ may attenuate LPS-induced ALI via reducing the production of pro-inflammatory mediators, and reducing complement deposition and radicals.展开更多
基金Shanghai Leading Academic Discipline Project (No.B906).
文摘Two new diterpenoids, named glaucocalyxin F and glaucocalyxin X, respectively, were isolated from the whole plant of Rabdosia japonica （Burm. f.） Hara var. glaucocalyx （Maxim.） Hara. Their structures was established on the basis of spectral analysis.
基金supported by China Postdoctoral Science Foundation(No.20100471390)Natural Science Foundation of Jiangsu Province(No.BK2011296)+1 种基金Foundation of Suzhou Science and Technology Bureau(No.SYS201206)Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘The present study was designed to evaluate the protective effects of ethanol extracts of Rabdosia japonica var. glaucocalyx(Maxim.) Hara(RJ) on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in mice and the possible underlying mechanisms of action. The mice were orally administrated with RJ extract(16, 32 or 64 mg?kg–1) daily for consecutive7 days before LPS challenge. The ung specimens and the bronchoalveolar lavage fluid(BALF) were collected for histopathological examinations and biochemical analyses. Pretreatment with RJ significantly enhanced superoxide dismutase(SOD) activity and reduced the wet-to-dry weight(W/D) ratio, the levels of nitric oxide(NO) and protein leakage, and myeloperoxidase(MPO) activity in mice with ALI, in a dose-dependent manner. RJ reduced complement deposition and significantly attenuated LPS-induced ALI by reducing productions of inflammatory mediators, such as tumor necrosis factor-α(TNF-α), interleukin-6(IL-6), and interleukin-1β(IL-1β). The results demonstrated that RJ may attenuate LPS-induced ALI via reducing the production of pro-inflammatory mediators, and reducing complement deposition and radicals.
