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  5. 抗流行性感冒病毒(H1N1)天然藥物之探索-訶子
 
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抗流行性感冒病毒(H1N1)天然藥物之探索-訶子

Other Title
Studies on the natural medicines for anti-influenza virus (H1N1) -Terminalia chebula
Type
thesis
Date Issued
2009-07-13
Author(s)
王秀帆
Advisor
梁文俐
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:梁文俐
共同指導教授:
口試委員:徐鳳麟;李美賢;林哲輝;劉銘燦
中文關鍵字:訶子;單寧;抗流行性感冒病毒
Abstract
本研究為尋求抗流行性感冒病毒(H1N1)藥物,進行訶子成分之分離及抗病毒活性測試,追蹤其有效活性成分。研究內容包括:一、化學探討- 由含水丙酮萃取物,經由大孔吸附樹脂、多葡糖聚脂及逆相層析等管柱,分離出 [1] Phenolcarboxylic acid: gallic acid (1), protocatechuic acid (2), chebulic acid (3)。 [2] Glloylglucoses: 1,6-di-O-galloyl-β-D-glucopyranose (4), 1,3,6-tri-O-galloyl-β-D-glucopyranose (5), 1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose (6)。 [3] Galloylshikimic acids: 4-O-galloylshikimic acid (7), 5-O-galloyl shikimic acid (8)。 [4] Ellagitannins: casuariin (9), chebulanin (10), corilagin (11), chebulagic acid (12), chebulinic acid (13), castalagin (14) 等十四個化合物。 二、抗H1N1流感病毒活性MTT測試- [ I ] 藥物及流感病毒同時加入細胞培養測試,以1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose(6)抗病毒活性最優,其細胞存活率為144.5 %,高於ribavirin (105.0 %)的效果,MIC值與正對照組ribavirin同為12.5 μg/ml,其次為chebulinic acid (13), 131.8 % ,MIC值為25 μg/ml。 [ II ] 加入藥物1小時後,再加入流感病毒。 在沒有藥物的保護作用之下,其細胞受病毒感染後,細胞存活率為8.5 %,而1,2,3,4,6-penta-O-galloyl-?nβ-D-glucopyranose (6), 135.9 % 和chebulinic acid (13), 134.1 %之抗病毒活性最好,其細胞存活率比正對照組ribavirin, 112.6 %高。在細胞存活率的數據顯示,本組實驗之MIC以1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose效果最好為12.5 μg/ml,和ribavirin一樣。[ III ] 加入病毒一小時後,再加入藥物,評估治療效果。在沒有任何藥物的保護作用之下,其細胞受病毒感染後,細胞之存活率為7.9 %,正對照組ribavirin為111.6 %, 而所試驗之化合物中以chebulagic acid (12), 126.9 % 和chebulinic acid (13), 120.7 % 治療性抗病毒作用最好,高於ribavirin的作用,其次1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose(6)和castalagin (14)的細胞存活率分別為109.2 % , 110.8 % ,和ribavirin的效果一致。正對照組ribavirin之MIC為12.5 μg/ml,而以上四個有效化合物之MIC均為25 μg/ml。 結論:(1) 由化學結構與活性相互關係之探討得知,多酚性化合物對流行性感冒病毒(H1N1)之抑制、預防及治療作用,以1,2,3,4,6-penta-O-galloyl-?nβ-D-glucopyranose (6) 及chebulinic acid (13)呈現最顯著之抗病毒作用。同時,取代之galloyl或chebuloyl等acyl group,總數目之多寡將影響其活性之大小。 (2) 依化學結構分類,小分子之Phenolcarboxylic acid類化合物僅以protocatechuic acid (2)之作用較佳;Glloylglucoses類化合物則以接五個galloyl基之1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose (6) 抗H1N1病毒效果最好;Galloylshikimic acids類之抑制H1N1病毒作用不明顯;Ellagitannins類化合物呈現最佳之抗H1N1作用,但糖基上若有兩個以上之OH基未接取代基時,其作用顯著下降。
URI
https://203.71.86.71/handle/123456789/12834
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C0191184.pdf

Size

7.49 MB

Format

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Checksum

(MD5):88c38e566c62b5eb706500cf4d1ac6d5

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