甘遂醇提物抗流感病毒FM_1有效部位的筛选

Screening for antiviral fractions from ethanol extract of Euphorbia Kansui Liou

目的 :阐明甘遂醇提物体内抗病毒有效部位 ;方法 :以柱层析对甘遂醇提物初步分离。流感病毒小鼠肺炎适应株(FM1 )对小鼠造模 ,以醇提物初步分离组分灌胃 ,最后计算各组分对感染病毒小鼠肺指数的抑制率。以3H TdR渗入法测定醇提物初步分离组分对小鼠T淋巴细胞的增殖反应。结果 :甘遂醇提物经初步分离得 1 5个组分 ,体积从 2 950 0mL到950 0 0mL ,是甘遂醇提物中第 8～ 1 5组分 ,这 8个组分对流感病毒引起的小鼠肺炎抑制作用最为显著 ,同时在低浓度下对淋巴细胞的增殖作用是对照组的 2～ 3倍。结论 :抗病毒有效部位主要集中在组分 5和极性较大的组分 8～ 1 5 ,这 9个组分体内抗病毒活性可能是通过刺激淋巴细胞的增殖 ,增强杀伤病毒感染细胞能力来实现的。

Objective: To elucidate antiviral fractions from ethanol extract of Euphorbia kansui .Methods: Initial separation of ethanol extract from Euphorbia kansui was performed by column chromatography. The test mice were infected with flu virus mouse pneumonia adaptive strain (FM 1) and then treated with separated fractions intragastrally for determining lung index inhibition rate. The T lymphocyte proliferation enhancement was observed by the dosimetry of 3 H TdR infiltrated into DNA of the cell.Result: Initial separation of the extract afforded to 15 fractions. Fractions 8～15 with the elution volume from 29500 to 95000mL were highly effective to the therapy of the mice pneumonia. The enhancement to the lymphocyte proliferation of the 8 fractions under low concentration were 2～3 times higher than that of the control.Conclusion: Fractions 5 and 8～15 exhibited strong in vivo antiviral activity to the test virus, which might be realized by stimulating lymphocyte proliferation, enhancing the capacity of killing the cells infected by the virus.