旋覆花倍半萜内酯类化合物对肥大细胞白三烯生成和脱颗粒的影响
首发时间:2015-11-24
摘要:目的:在前期工作中已证明旋覆花乙醇提取物具有抗炎抗哮喘作用,为了阐明其有效成分,课题组对旋覆花的乙醇提取物进行了分离,得到了倍半萜内酯类、黄酮类和其他类型化合物。本文利用其中4个倍半萜内酯类化合物进行其对c-Kit Ligand (KL)诱导的肥大细胞生成白三烯C4 (LTC4) 和脱颗粒的影响。方法:选用的4个倍半萜类化合物拥有一样的基本母核结构,依次为1-O-β-D-glucopyranosyl-11αH-eudesma-4(5)-en-12,8β-olide (1),1β-hydroxy-3-oxo-11αH-eudesma-4(5)-en-12,8β-olide (2),ivangustin (3),1β,3α-dihydroxy-eudesma-4(5),11(13)-dien-12,8β-olide (4)。利用ELISA试剂盒和分光光度分析法,进行上述4个化合物对肥大细胞LTC4 生成和脱颗粒的影响。结果:抗炎活性测定结果表明,化合物1,2 和4具有抑制KL诱导的肥大细胞LTC4生成和脱颗粒的作用,其中化合物4的抗炎作用最佳。结论:化合物4具有潜在的成为抗炎抗哮喘作用先导化合物的可能性。
关键词: 旋覆花 化学成分 白三烯 肥大细胞脱颗粒 抗炎作用
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The effects of sesquiterpene lactones from Inula japonica on LTC4 generation and mast cell degranulation
Abstract: Objective: In the previous study, our group demonstrated that Inula japonica extract have anti-inflammatory and anti-asthmatic activities. In order to clarify bioactive constituent, we isolated several compounds from I. japonica including sesquiterpene lactones, flavonoids and the other compounds. We used 4 compounds to evaluate their anti-inflammatory acitivities on c-Kit Ligand (KL)-induced leukotriene C4 (LTC4) generation and degranulation in mast cells. Methods: Four sesquiterpene lactones have similar structure were used in this study, their structures were elucidated as follows: 1-O-β-D-glucopyranosyl-11αH-eudesma-4(5)-en-12,8β-olide (1),1β-hydroxy-3-oxo-11αH-eudesma-4(5)-en-12,8β-olide (2),ivangustin (3),1β,3α-dihydroxy-eudesma-4(5),11(13)-dien-12,8β-olide (4)。The ELISA and spectrophotometric analysis were used for measure the LTC4 generation and mast cell degranulation. Results: Compounds 1, 2 and 4 exhibited inhibition effects of LTC4 synthesis and degranulation in KL induced mast cells, the compound 4 has revealed most potent inhibition activities. Conclusion: Compound 4 might become a promising lead compound for prevention and treatment of inflammatory diseases and asthma.
Keywords: Inula japonica chemical constituent LTC4 mast cell degranulation anti-inflammatory activity
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No.4661699110166914****
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旋覆花倍半萜内酯类化合物对肥大细胞白三烯生成和脱颗粒的影响
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