摘要
目的观察肉苁蓉提取物松果菊苷(ECH)对实验性小鼠免疫功能和肝细胞线粒体DNA相对含量的影响。方法小鼠皮下注射10%D-半乳糖10ml.kg-1,每天1次,连续8wk,建立亚急性衰老模型。阳性组和松果菊苷各组同时灌胃给于维生素E40mg·kg-1和ECH20、40、60mg·kg-1,每天1次。采用酶联免疫吸附试验(ELISA)法测定血清中IL-2、IL-6含量;中性红实验测定小鼠腹腔巨噬细胞吞噬功能;MTT法检测ConA诱导的小鼠脾淋巴细胞增殖转化;SDS碱变性法测定肝细胞线粒体DNA相对含量。结果与正常组比较,模型组小鼠血清IL-2含量,小鼠腹腔巨噬细胞吞噬功能和淋巴细胞增殖反应均下降,IL-6和肝脏线粒体DNA相对含量升高。ECH各剂量组和维生素E阴性对照组均能提高衰老小鼠血清IL-2含量、小鼠腹腔巨噬细胞吞噬功能和淋巴细胞增殖反应,降低IL-6和肝细胞线粒体DNA相对含量。结论松果菊苷能够提高机体的免疫功能,降低衰老小鼠肝细胞线粒体DNA相对含量,可能是其延缓衰老的作用机制之一。
Aim To study the effect of Echinacoside on immune function and the hepatocyte mitochondrial DNA relative content of experimentally aging model mice. Methods Mice were given sc 10%D-galactose 10 ml·kg^-1,once daily for 8 weeks to establish the model of aging mice. Vitamin E group ,and ECH groups were given ig Vitamin E 40 mg·kg^-1 and ECH 20,40,60 mg·kg^-1,respectively at one time. The interleukin-2（IL-2） and interleukin-6（IL-6） content in peripheral blood was measured by ELISA method.Phagocytosis of peritoneal macrophages was tested by neutral red test. Proliferation and transformation of spleen lymphocytes induced by ConA were determined by MTT method. The mitochondrial DNA relative content of liver cells was measured by the means of SDS alkali decomposition from liver.Results The IL-2 content,phagocytosis of peritoneal macrophages and proliferation of spleen lymphocytes were obviously decreased in the aging model group as compared with those in the normal control group.The IL-6 content and mitochondrial DNA relative content of liver cells were significantly increased. ECH 20,40,60 mg·kg^-1 and Vitamin E 40 mg·kg^-1 could improve the IL-2 content,phagocytosis of peritoneal macrophages and transformation of spleen lymphocytes,and reduce the IL-6 content and mitochondrial DNA relative content of liver cells. Conclusion ECH can enhance immune function and reduce the mitochondrial DNA relative content of liver cells,which may be one of the mechanisms of anti-aging.
出处
《中国药理学通报》
CAS
CSCD
北大核心
2010年第6期810-813,共4页
Chinese Pharmacological Bulletin
