真菌感染(Fungi Infection)約引致全球每年約二百萬人的死亡,而現今對抗真菌(Fungi)的藥物類別主要共分為三大類別。590Please respect copyright.PENANATmEkMqRLx3590Please respect copyright.PENANAN0bXitG4T8
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(圖2)三大類別的藥物機制雖有不同,但最終目的均是透過破壞真菌的外層結構來抑制其生長。590Please respect copyright.PENANA3Swyd3ZI9P590Please respect copyright.PENANA7MoppnwNu4
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1.Azole590Please respect copyright.PENANAupCtu1VUx1
抑制構成細胞膜的Ergosterol產生590Please respect copyright.PENANA5GnIRX57Fn
2. Polyene590Please respect copyright.PENANAvwdyYtXwSN
消耗細胞膜的Ergosterol590Please respect copyright.PENANAZzrRoacYRP
3. Echinocandins590Please respect copyright.PENANAnX6lmLgZq7
抑制構成細胞外層的糖分組織產生590Please respect copyright.PENANAXg4WktEbJN
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(圖3)然而,現今出現了某一類別的Candida auris,上述三款的藥物均對它無法作出顯著功效。590Please respect copyright.PENANAHRqqcE30Mc590Please respect copyright.PENANA75xp9lYJP5
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它能夠透過血液循環系統走進全身各部位,引發感染。590Please respect copyright.PENANAuIWdZ1RSTq
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就在2018年,英國急症室病人出現大規模Candida auris的感染,後來證實為共用探熱針所致(Ref1)。590Please respect copyright.PENANANt0UkMaWOV
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(圖4)有科學家近日發表文章(Ref2),在居住在深海生物的微生物中分離出命名為Turbinmicin的天然物質。590Please respect copyright.PENANA8pX2X28on3590Please respect copyright.PENANAxR7fcRy40i
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Turbinmicin能有效抑制不同真菌品種,包括Candida auris。590Please respect copyright.PENANAxEyYKUXP9M
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它的機制乃為影響內部的蛋白質運輸,與現今三類抑制外圍結構的機制不同,可能因而能夠擊殺得到抵擋現今三大類藥物的Candida auris。590Please respect copyright.PENANAnXD03961y6
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它並不會對人體的紅血球造成傷害,高劑量的使用亦沒有對老鼠做成影響,同時亦能治理Candida auris在老鼠體內所引發的感染。590Please respect copyright.PENANAEfFShsqBPV
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但會否引起副作用或其他問題,還需要進一步的研究確實後,才能開啟人類試驗。590Please respect copyright.PENANAdLhH1bCTFg
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深海一直是未被深入發掘的領域,這一次找到對抗耐藥真菌曙光,日後可能會繼續有意想不到的驚喜。590Please respect copyright.PENANAu9E31hpNj3
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc590Please respect copyright.PENANAAGNjdfnpCN
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Ref1:https://www.nejm.org/doi/full/10.1056/NEJMc1900112590Please respect copyright.PENANAgeUHNS6K8g
Ref2:https://science.sciencemag.org/content/370/6519/974590Please respect copyright.PENANAA0BvBPbi9g