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  5. 幾丁聚醣藉由抑制分泌性天冬氨酸蛋白酶活性來抑制 白色念珠菌之生長
 
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幾丁聚醣藉由抑制分泌性天冬氨酸蛋白酶活性來抑制 白色念珠菌之生長

Other Title
Chitosan inhibits Candida albicans growth by
decreasing secretory aspartyl proteinase activity
Type
thesis
Date Issued
2011-01-20
Author(s)
張高鳴
Advisor
柯恩生
Subjects
系所名稱:牙醫學系碩博士班
Description
學位別:碩士
語文別:中文
指導教授:柯恩生
共同指導教授:
口試委員:王正怡;蘇慶華
中文關鍵字:白色念珠菌;幾丁聚醣;分泌性天冬氨酸蛋白酶結合試驗;最低抑菌濃度;生長曲線;西方墨點法;活性測試
Abstract
白色念珠菌是人體內主要的真菌病原,尤其在免疫抑制的病人身上常見,現今治療白色念珠菌感染的藥物都有一些缺點,如毒性、副作用等;幾丁聚醣做為一個天然的化合物,擁有良好的生物相容性、低副作用以及產量豐富等特性,是一個具有潛力的抗真菌物質。本實驗的目的是測試幾丁聚醣抑制白色念珠菌的生長是否和Sap(secretory aspartyl proteinase)有關。首先我們使用抗菌實驗(MIC)確認幾丁聚醣抗菌效果,再來使用細胞存活性試驗觀察幾丁聚醣直接殺菌的可能性;接著使用西方墨點法來確認白色念珠菌培養在不同氮素來源之培養基中,是否會產生Sap;並且在生長曲線實驗中,測試幾丁聚醣對白色念珠菌生長的影響,同時也觀察幾丁聚醣對測試培養液的上清液中Sap活性的影響;最後以結合試驗(binding assay)測試幾丁聚醣是否會和Sap產生某種結合關係。
因此我們推測在適當的濃度下,幾丁聚醣可以藉由和Sap結合而降低其活性進而抑制白色念珠菌的生長。但它們之間的關係,仍需要更多的實驗的來證明之。
URI
https://203.71.86.71/handle/123456789/13436

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