毛喉鞘蕊花中抗急性肺损伤活性成分对人中性粒细胞功能的影响  

Effects of active ingredients from Coleus forskohlii on human neutrophil

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作  者:裴晓宁[1] 卿晨[1] 陈国珍[1] 许云龙 金歧端 马丽梅[1] 杨为民[1] 

机构地区:[1]昆明医学院云南省天然药物药理重点实验室,昆明650031 [2]中科院昆明植物所植化研究室

出  处:《中华急诊医学杂志》2008年第12期1266-1270,共5页Chinese Journal of Emergency Medicine

基  金:国家自然科学基金资助项目(30560174);云南省自然科学基金项目(2004C008M)

摘  要:目的实验研究从植物毛喉鞘蕊花中提取的化合物——异佛司可林(Isoforskolin,ISOF)及有效部位(CF-E,主要为异佛司可林类似物混合物),对人中性粒细胞(PMN)功能的调节作用,以探讨其抗急性肺损伤(ALI)的作用机制。方法从人脐静脉血中分离得到人PMN,测定受试物对N-甲酰甲硫亮氨酰苯丙氨酸(fMLP)诱导人血PMN聚集,以及内毒素(LPS)诱导PMN与人脐静脉血管内皮细胞(ECV-304)黏附的影响。流式细胞仪、放免法测定受试物对LPS诱导PMN分泌细胞黏附分子、肿瘤坏死因子(TNF-α)、环腺苷酸(cAMP)的影响。结果ISOF及CF-E明显抑制PMN聚集及黏附反应,诱导剂对照组的聚集率、黏附率分别为(44.14±2.36)%、(14.92±1.05)%,25,50,100μmol/LISOF剂量组的聚集率分别降低至(25.22±1.62)%、(35.33±4.57)%、(24.88±6.45)%,黏附率分别降低至(9.02±0.31)%、(7.12±0.35)%、(5.52±0.34)%(P〈0.01或0.05);ISOF及CF-E显著抑制PMN黏附分子CD11b、CD18、CD14分泌,诱导剂对照组的黏附分子CD14表达率为(40.77±3.91)%,25,50,100μmol/LISOF剂量组的CD14表达率分别降低至(21.58±2.21)%、(18.05±0.97)%、(0.75±0.09)%(P〈0.01);ISOF及CF-E明显抑制PMN的TNF-α分泌,而升高PMN内cAMP含量,诱导剂组及50,100μmol/LISOF剂量组的TNF-α水平分别为(0.72±0.03)、(0.59±0.09)、(0.42±0.02)ng/1.5×10^6个细胞(P〈0.01或P〈0.05),溶媒对照组及50,100μmol/LISOF剂量组的cAMP分别为(1.23±0.05)、(1.61±0.36)、(2.11±0.25)ng/1.5×10^6个细胞(P〈0.01)。结论ISOF及CF-E明显抑制伽LP、LPS激活状态下PMN的聚集、黏附及分泌功能,升高PMN内cAMP水平,ISOF及CF-E的抗ALI的作用机制与调节PMN功能有关。Objective To study the effect of plant Coleus forskohlii active elements Isoforskolin (ISOF) and CF-E (analogs mixture of Isoforskolin) on human neutrophill (PMN) in vitro in order to uncover the mechanism of their properties of mitigating acute lung injury (ALI). Method The effects of ISOF and CF-E on PMN aggrega- tion induced by N-formyl-methionyMeucyl-phenylalanine (fMLP) was performed by using a 4-channel platelet aggregometer. Cytometry was applied to analyze the effect of tested samples on adhension between PMN and endothehal cells (ECV-304) activated by using lipopolysaccharides (LPS). Expression of LPS-induced PMN adhension molecules was determined with flow cytometry. Radioimmunoassay was applied to detect the level of TNF-α hberated by PMN and intracellular cyclic adenosine monophosphate (cAMP) level of PMN. Results It was found that ISOF (25, 50, 100 μmol/L) and CF-E (1.25, 2.5, 5 mg/ml) inhibitted PMN aggregation induced by fMLP, PMN adhension to ECV-304 induced by LPS, expression of PMN adhesion molecules, and TNF-α level released by PMN. ISOF and CF-E also increased intracellular cAMP level of PMN. Conclusions ISOF and CF-E inhibit PMN aggregation, adhension and adhension molecules, and TNF-α released by PMN, while they increase intracellular cAMP level of PMN. It suggests that their specific alleviating the ALI by the mechanism of the modulation of PMN function.

关 键 词:异佛司可林 急性肺损伤 中性粒细胞 内毒素 环腺苷酸 

分 类 号:R285.5[医药卫生—中药学]

 

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