目的:观察中药单体姜黄素对ActD/TNF-α协同诱导PC12细胞凋亡的影响,并探讨其机制。方法:采用MTT法确定实验药物的最佳浓度;Hoechst33258荧光染色法观察PC12细胞的凋亡;JC-1荧光分子探针检测线粒体膜电位;Real Time PCR检测凋亡基因Bcl-...
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目的:观察中药单体姜黄素对ActD/TNF-α协同诱导PC12细胞凋亡的影响,并探讨其机制。方法:采用MTT法确定实验药物的最佳浓度;Hoechst33258荧光染色法观察PC12细胞的凋亡;JC-1荧光分子探针检测线粒体膜电位;Real Time PCR检测凋亡基因Bcl-2/Bax的表达。结果:ActD/TNF-α协同作用可导致PC12细胞的活力降低(P<0.05);出现核固缩、核碎裂现象的细胞增多,细胞凋亡率增高(P<0.05);细胞线粒体膜电位下降;细胞内抗凋亡基因Bcl-2的表达降低(P<0.05)。经姜黄素(5μmol/L)处理后,PC12细胞的活力增强(P<0.05);细胞核固缩、核碎裂现象减少,细胞凋亡率下降(P<0.05);细胞线粒体膜电位上升;细胞内抗凋亡基因Bcl-2的表达增强(P<0.05)。结论:姜黄素可拮抗ActD/TNF-α引起的PC12细胞凋亡,可能与升高线粒体膜电位,促进抗凋亡基因Bcl-2的表达有关。
Objective To propose a revised definition of allergy and a novel procedure for applying allergy *** The related studies and theories were reviewed and analyzed, and the problem in defining ALLERGY was *** and Conclusi...
Objective To propose a revised definition of allergy and a novel procedure for applying allergy *** The related studies and theories were reviewed and analyzed, and the problem in defining ALLERGY was *** and Conclusions Allergic diseases should be defined as a group of mast cell or basophil activation provoked non-infection diseases, including IgE mediated, IgG mediated and non-lgE or non-lgG mediated (non-immunological) *** upon the proposed definition above, the ideal laboratory examination procedure for allergy should be as follows: Skin prick and skin patch tests (highly suspicious of allergy)(@)allergen-induced basophil activation test (confirmation of allergy)(@) slgE and slgG measurement (confirmation of subtype of allergy)(@)final diagnosis: IgE, IgG or non-immunological allergy.
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