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  5. 抗真菌藥Fluconazole 對白色念珠菌臨床菌株形態學影響之探討
 
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抗真菌藥Fluconazole 對白色念珠菌臨床菌株形態學影響之探討

Other Title
Surveillance for Morphological Effect of Antifungal Agent, Fluconazole, on Clinical Isolates of Candida albicans
Type
thesis
Date Issued
2007-07-06
Author(s)
歐聰億
Advisor
蘇慶華
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:蘇慶華
共同指導教授:
口試委員:許瑞祥;許元勳
中文關鍵字:白色念珠菌;形態學;Fluconazole
Abstract
白色念珠菌是二倍體真菌,生活史中沒有被發現有性生殖,它是造成伺機性感染的最常見真菌。已有研究發現白色念珠菌的致病能力主要就是來自白色念珠菌能自由的在酵母菌形 (Yeast) 與菌絲形(Hyphae) 之間做轉換。最近又有研究指出此菌株在White-Opaque表現形態之間的轉換是與生物膜形成以及特殊致病毒性有相關。可自發、可逆性且高頻率的形態轉換是白色念珠菌在人體最主要的致病機制,而形態間的轉換受環境條件影響。Triazoles類抗真菌藥物中的Fluconazole最常被用來治療白色念珠菌感染。而作者觀察以Fluconazole治療失敗的白色念珠菌臨床菌株CaF,發現它與標準菌株ATCC 22816在Fluconazole環境下的形態學變化不一樣。本研究發現Fluconazole 會引發菌株CaF 與ATCC 22816 進行高頻率的 White-to-Opaque 轉換,由大約5x10-4與4x10-3提昇至17.6% 與15.0%。菌株CaF會產生有內涵體的大細胞及長串型酵母。這些發現尚未曾在文獻中被提到過。經由在Lee’s medium中以E-test實驗,發現在抑制圈內形成Opaque菌落高達100%。這些形態學變化是否與致病毒性或是抗藥性有關聯,還需要更進一步的研究才能瞭解。
URI
https://203.71.86.71/handle/123456789/12125
https://hdl.handle.net/11296/wez4xf
File(s)
No Thumbnail Available
Name

C0183438.pdf

Size

29.77 MB

Format

Adobe PDF

Checksum

(MD5):9bc548cf51c31c5f352578f16e4624d2

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