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ID:32280665
大小:6.19 MB
页数:69页
时间:2019-02-02
《黄芪多糖对内毒素诱导的u937细胞分泌炎症因子的影响与其机制的的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、北京化工人学硕上学位论文2.LPS诱导U937巨噬细胞,建立炎症模型,加入不同浓度的黄芪多糖作用48h,采用酶联免疫吸附试验(ELISA)测定LPS诱导的U937细胞各组细胞上清液中炎性因子TNF.扒IL.1p的含量;采用Griess试剂检测组细胞上清液中NO的含量;采用实时定量聚合酶链反应(PCR)检测各组细胞TNF.0【、IL.1p及iNOSmRNA的表达。结果显示,LPS作用于PMA诱导的U937细胞后,细胞上清液中TNF.眠IL.113及NO的含量明显增加(尸2、5)。LPS刺激后,TNF.a、IL—lp及iNOSmRNA的表达显著升高俨3、,分布于外周血、脾脏、全身各处淋巴结及PP结等处,在全身免疫系统及黏膜免疫系统内免疫诱导部位及免疫效应部位之间不断的迁移,同时伴随着淋巴细胞本身的分化成熟,参与机体的免疫应答。树突状细胞(DCs)作为机体功能最强的抗原提呈细胞(antigenpresentingcells,APCs),它能快速有效地摄取、加工处理和递呈抗原,处于启动、调控、并Ⅱ摘要维持免疫应答的中心环节。黄芪多糖对免疫细胞活力及表型的影响可间接反映其免疫调节作用。本论文基于此进行以下实验:1.取小鼠原代外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞,采用MTT法检测不同浓度的黄芪多糖对Con4、A诱导的细胞活力的影响。结果显示,37.5"---'30099/ml浓度范围内的黄芪多糖能够促进ConA诱导的外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞增殖(尸5、了THEEFFECTANDMECHANISMoFASTRAGALUSPOLYSACCHARIDESONTHEINFLAMMAToRYFACToRSSECRETIONFRoMMACRoPHAGESTIMULATEDBYLIPoPoLYSACCHAIUDEABSTRACTAstragalusPolydsaccharide(APS)isoneofthemosteffectiveandimportantingredientisolatedfromtherootsofAstragalusmembranaceus,whichsignifycantlyenhancesimmunityor6、gan’sfunction,promotesproductionofantibodies,improvesmacrophageactivity,andstrengthensofT,BcellsandotherimmunecellssuchasNKcells.Lipopolysaccharideisalargemolecularstructureingredientintheoutermembraneofgramnegativebacteria,itcaninducemacrophagetosynthesisandreleaseinflammatorymediatorstor7、esultinmanyinflammatoryreaction.Sorestrainingtheinflammatorymediatorsfrommacrophagebecomestheinvestigativeandtherapeuticaltargetofanti.inflammotorydrugs.HumanmononuclearmacrophageU937cellswereinducedtobematurebyphorbol12一mynstate13一acetate(PMA),andthenstimulat
2、5)。LPS刺激后,TNF.a、IL—lp及iNOSmRNA的表达显著升高俨3、,分布于外周血、脾脏、全身各处淋巴结及PP结等处,在全身免疫系统及黏膜免疫系统内免疫诱导部位及免疫效应部位之间不断的迁移,同时伴随着淋巴细胞本身的分化成熟,参与机体的免疫应答。树突状细胞(DCs)作为机体功能最强的抗原提呈细胞(antigenpresentingcells,APCs),它能快速有效地摄取、加工处理和递呈抗原,处于启动、调控、并Ⅱ摘要维持免疫应答的中心环节。黄芪多糖对免疫细胞活力及表型的影响可间接反映其免疫调节作用。本论文基于此进行以下实验:1.取小鼠原代外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞,采用MTT法检测不同浓度的黄芪多糖对Con4、A诱导的细胞活力的影响。结果显示,37.5"---'30099/ml浓度范围内的黄芪多糖能够促进ConA诱导的外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞增殖(尸5、了THEEFFECTANDMECHANISMoFASTRAGALUSPOLYSACCHARIDESONTHEINFLAMMAToRYFACToRSSECRETIONFRoMMACRoPHAGESTIMULATEDBYLIPoPoLYSACCHAIUDEABSTRACTAstragalusPolydsaccharide(APS)isoneofthemosteffectiveandimportantingredientisolatedfromtherootsofAstragalusmembranaceus,whichsignifycantlyenhancesimmunityor6、gan’sfunction,promotesproductionofantibodies,improvesmacrophageactivity,andstrengthensofT,BcellsandotherimmunecellssuchasNKcells.Lipopolysaccharideisalargemolecularstructureingredientintheoutermembraneofgramnegativebacteria,itcaninducemacrophagetosynthesisandreleaseinflammatorymediatorstor7、esultinmanyinflammatoryreaction.Sorestrainingtheinflammatorymediatorsfrommacrophagebecomestheinvestigativeandtherapeuticaltargetofanti.inflammotorydrugs.HumanmononuclearmacrophageU937cellswereinducedtobematurebyphorbol12一mynstate13一acetate(PMA),andthenstimulat
3、,分布于外周血、脾脏、全身各处淋巴结及PP结等处,在全身免疫系统及黏膜免疫系统内免疫诱导部位及免疫效应部位之间不断的迁移,同时伴随着淋巴细胞本身的分化成熟,参与机体的免疫应答。树突状细胞(DCs)作为机体功能最强的抗原提呈细胞(antigenpresentingcells,APCs),它能快速有效地摄取、加工处理和递呈抗原,处于启动、调控、并Ⅱ摘要维持免疫应答的中心环节。黄芪多糖对免疫细胞活力及表型的影响可间接反映其免疫调节作用。本论文基于此进行以下实验:1.取小鼠原代外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞,采用MTT法检测不同浓度的黄芪多糖对Con
4、A诱导的细胞活力的影响。结果显示,37.5"---'30099/ml浓度范围内的黄芪多糖能够促进ConA诱导的外周血单个核细胞、腋下淋巴结细胞、脾脏淋巴细胞及PP结淋巴细胞增殖(尸5、了THEEFFECTANDMECHANISMoFASTRAGALUSPOLYSACCHARIDESONTHEINFLAMMAToRYFACToRSSECRETIONFRoMMACRoPHAGESTIMULATEDBYLIPoPoLYSACCHAIUDEABSTRACTAstragalusPolydsaccharide(APS)isoneofthemosteffectiveandimportantingredientisolatedfromtherootsofAstragalusmembranaceus,whichsignifycantlyenhancesimmunityor6、gan’sfunction,promotesproductionofantibodies,improvesmacrophageactivity,andstrengthensofT,BcellsandotherimmunecellssuchasNKcells.Lipopolysaccharideisalargemolecularstructureingredientintheoutermembraneofgramnegativebacteria,itcaninducemacrophagetosynthesisandreleaseinflammatorymediatorstor7、esultinmanyinflammatoryreaction.Sorestrainingtheinflammatorymediatorsfrommacrophagebecomestheinvestigativeandtherapeuticaltargetofanti.inflammotorydrugs.HumanmononuclearmacrophageU937cellswereinducedtobematurebyphorbol12一mynstate13一acetate(PMA),andthenstimulat
5、了THEEFFECTANDMECHANISMoFASTRAGALUSPOLYSACCHARIDESONTHEINFLAMMAToRYFACToRSSECRETIONFRoMMACRoPHAGESTIMULATEDBYLIPoPoLYSACCHAIUDEABSTRACTAstragalusPolydsaccharide(APS)isoneofthemosteffectiveandimportantingredientisolatedfromtherootsofAstragalusmembranaceus,whichsignifycantlyenhancesimmunityor
6、gan’sfunction,promotesproductionofantibodies,improvesmacrophageactivity,andstrengthensofT,BcellsandotherimmunecellssuchasNKcells.Lipopolysaccharideisalargemolecularstructureingredientintheoutermembraneofgramnegativebacteria,itcaninducemacrophagetosynthesisandreleaseinflammatorymediatorstor
7、esultinmanyinflammatoryreaction.Sorestrainingtheinflammatorymediatorsfrommacrophagebecomestheinvestigativeandtherapeuticaltargetofanti.inflammotorydrugs.HumanmononuclearmacrophageU937cellswereinducedtobematurebyphorbol12一mynstate13一acetate(PMA),andthenstimulat
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