Aim To evaluate the anti-inflammatory effects of ethanol fraction prepared from Disporum cantoniense (Lour.) Merr. 70% ethanol extract with a cellular model of LPS-stimulated RAW264.7 cell. Methods RAW264.7 cells we...Aim To evaluate the anti-inflammatory effects of ethanol fraction prepared from Disporum cantoniense (Lour.) Merr. 70% ethanol extract with a cellular model of LPS-stimulated RAW264.7 cell. Methods RAW264.7 cells were treated with different concentrations of ethanol fraction (25,50 and 100 g · L^-1 ) and stimu- the conditioned media was collected and analyzed. The quantity of ni- lated with LPS (10 μg· L^-1) for 24 hours, tric oxide (NO) was assayed by Griess reagent. The production of inflammatory mediators was determined by en- zyme-linked immunosorbent assay (ELISA), such as prostaglandin E2 (PGE2), tumor necrosis factor ot (TNF-ot) interleukin- 1 β (IL-1 β) and interleukin 6 (IL-6) in cell supernatant. The concentrations of inflammatory medi- 9 ators were calculated according to the standard curves generated by each of the recombinant cytokines provided with LPS can induce RAW264.7 cells to promote the pro- the ELISA kits. Results Compared with the control group, TNF-α, IL-1β and IL-6. Compared with the duction of inflammatory mediators (P 〈 0.01 ) , including NO, PGE2, model group, ethanol fraction significantly suppressed LPS induced release of inflammatory mediators such as nitric NO, PGE2, TNF-α, IL-1β and IL-6 in a good dose dependent manner (P 〈 0.05, P 〈 0.01 ). Conclusions Eth- anol fraction could significantly inhibit the production of LPS-induced inflammatory response in RAW264.7 cells, and its anti-inflammatory effect may be related to reduce the production of inflammatory mediators NO, PGE2, TNF-α, IL-1 β and IL-6. These results demonstrate that the ethanol fraction is the bioactive component of Disporum can- toniense (Lour.) Merr. , and the ethanol fraction will be further developed as a herbal remedy for preventive and/ or curative purposes in various inflammatory diseases.展开更多
目的:利用UHPLC-DAD建立黔产苗药百尾参的指纹图谱,为评价其质量提供理论依据。方法:以Agilent Eclipse ZORBAX Plus C18(100 mm×2.1 mm,1.8μm)为色谱柱,0.1%甲酸乙腈(A)-0.1%甲酸水(B)为流动相系统梯度洗脱,流速为0.3 m ...目的:利用UHPLC-DAD建立黔产苗药百尾参的指纹图谱,为评价其质量提供理论依据。方法:以Agilent Eclipse ZORBAX Plus C18(100 mm×2.1 mm,1.8μm)为色谱柱,0.1%甲酸乙腈(A)-0.1%甲酸水(B)为流动相系统梯度洗脱,流速为0.3 m L/min,检测波长290 nm,柱温40℃,进样量3μL。指纹图谱进行了相似度评价和主成分分析。结果:建立了黔产苗药百尾参的UHPLC-DAD指纹图谱,标定了12个共有峰,确认了其中3个成分。30批药材相似度结果为0.766-0.994,主成分分析提示1号峰和12号峰在指纹图谱中具有代表意义。结论:该方法准确、可靠,可用于百尾参药材的鉴别和质量控制。展开更多
文摘Aim To evaluate the anti-inflammatory effects of ethanol fraction prepared from Disporum cantoniense (Lour.) Merr. 70% ethanol extract with a cellular model of LPS-stimulated RAW264.7 cell. Methods RAW264.7 cells were treated with different concentrations of ethanol fraction (25,50 and 100 g · L^-1 ) and stimu- the conditioned media was collected and analyzed. The quantity of ni- lated with LPS (10 μg· L^-1) for 24 hours, tric oxide (NO) was assayed by Griess reagent. The production of inflammatory mediators was determined by en- zyme-linked immunosorbent assay (ELISA), such as prostaglandin E2 (PGE2), tumor necrosis factor ot (TNF-ot) interleukin- 1 β (IL-1 β) and interleukin 6 (IL-6) in cell supernatant. The concentrations of inflammatory medi- 9 ators were calculated according to the standard curves generated by each of the recombinant cytokines provided with LPS can induce RAW264.7 cells to promote the pro- the ELISA kits. Results Compared with the control group, TNF-α, IL-1β and IL-6. Compared with the duction of inflammatory mediators (P 〈 0.01 ) , including NO, PGE2, model group, ethanol fraction significantly suppressed LPS induced release of inflammatory mediators such as nitric NO, PGE2, TNF-α, IL-1β and IL-6 in a good dose dependent manner (P 〈 0.05, P 〈 0.01 ). Conclusions Eth- anol fraction could significantly inhibit the production of LPS-induced inflammatory response in RAW264.7 cells, and its anti-inflammatory effect may be related to reduce the production of inflammatory mediators NO, PGE2, TNF-α, IL-1 β and IL-6. These results demonstrate that the ethanol fraction is the bioactive component of Disporum can- toniense (Lour.) Merr. , and the ethanol fraction will be further developed as a herbal remedy for preventive and/ or curative purposes in various inflammatory diseases.
文摘目的:利用UHPLC-DAD建立黔产苗药百尾参的指纹图谱,为评价其质量提供理论依据。方法:以Agilent Eclipse ZORBAX Plus C18(100 mm×2.1 mm,1.8μm)为色谱柱,0.1%甲酸乙腈(A)-0.1%甲酸水(B)为流动相系统梯度洗脱,流速为0.3 m L/min,检测波长290 nm,柱温40℃,进样量3μL。指纹图谱进行了相似度评价和主成分分析。结果:建立了黔产苗药百尾参的UHPLC-DAD指纹图谱,标定了12个共有峰,确认了其中3个成分。30批药材相似度结果为0.766-0.994,主成分分析提示1号峰和12号峰在指纹图谱中具有代表意义。结论:该方法准确、可靠,可用于百尾参药材的鉴别和质量控制。