摘要
目的肥大细胞脱颗粒及组胺释放是过敏性疾病发生机制中的重要环节之一,研究炒紫苏子醇提取物对其的作用,为研制和开发新的抗过敏中药提供实验依据。方法制备致敏大鼠腹腔肥大细胞悬液,体外和不同浓度药物作用,观察脱颗粒百分率和组胺释放水平,判断药物的抗过敏作用。除正常组(非致敏组)外,设空白对照组、炒紫苏子醇提取物320、640、1280μg/mL各剂量组、色甘酸钠阳性对照组、木犀草素组共7组。并对实验各个因素进行优化。结果经过最佳实验条件的优化,选择药物与肥大细胞作用时间为20min,OVA的触发浓度为20μg/mL。炒紫苏子醇提取物320、640、1280μg/mL各剂量组和木犀草素组均能明显降低IgE所致的I型过敏反应肥大细胞脱颗粒百分率(P<0.01),也明显降低其组胺释放(分别为P>0.05,P<0.01,P<0.01,P<0.01),并表现明显的剂量依赖关系。结论炒紫苏子醇提取物具有明显的肥大细胞脱颗粒及组胺释放等抗过敏作用。
Objective To detect the inhibition of the EtOH ext. of roasted perilla seed on mast cell degranulation and histamin releasing in vitro. Methods Aliquots of OVA-sensitized rat peritoneal mast cells （PMC） were preincubated with 320, 640, 1 280 μg/mL EtOH ext. of roasted perilla seed, disodium cromoglicate and luteolin, before an optimal concentration of OVA were added. Then the PMC degranulation response upon allergen triggering was detected by PMC degranulation percentage and histamine releasing assay. Result The protocol was optimized as PMC were preincubated with drugs for 20 min, and then triggered with 20μg/mL OVA. 320, 640, 1 280 μg/mL EtOH ext. of roasted perilla seed and luteolin could inhibit PMC degranulation significantly （P〈0.01） and histamine releasing （P〈0.05, P〈0.01, P〈0.01, P〈0.01 respectively） in a concentration dependent manner. Conclusion The EtOH ext. of roasted perilla seed can inhibit rat PMC degranulation and histamine releasing in vitro
出处
《中国中医药信息杂志》
CAS
CSCD
2006年第1期30-32,共3页
Chinese Journal of Information on Traditional Chinese Medicine
基金
国家自然科学基金资助项目(30171140)
