要理解為何癌症會導致肌肉萎縮,其中的一道辦法就是對比萎縮肌肉與正常肌肉有甚麼分別,再以推敲其相關的機制。491Please respect copyright.PENANAaXhuyNILuc
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(圖2)研究發現,患癌老鼠的萎縮肌肉中,其名為ZIP14的蛋白質含量特別高企,且在患癌的老鼠但其肌肉並沒有萎縮的情況下, ZIP14的蛋白質含量並沒有顯著提升。491Please respect copyright.PENANAH7gU8lt31b
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(圖3)ZIP14蛋白質的主要作用是把鋅 (Zinc)輸送到細胞裡頭。491Please respect copyright.PENANAsQ4t8AfsNY
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科學家量度因癌症而導致萎縮的肌肉,發現肌肉的鋅 (Zinc)含量的確是比正常肌肉的為多,與其ZIP14蛋白質含量不謀而合。491Please respect copyright.PENANAkf0faDXGV6
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(圖4)利用基因工程移除ZIP14蛋白質的話,可以見得到患癌老鼠的肌肉細胞橫切面並沒有顯著的減少。491Please respect copyright.PENANAIzSFhyT1Mg
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再作一系列的實驗後,科學家推斷當癌細胞所釋出的TGFa/b物質到達肌肉位置後,便會引起肌肉ZIP14蛋白質含量上升,因而引起肌肉萎縮。491Please respect copyright.PENANAECxlF3Bw8V
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科學家們現正研究如何針對ZIP14蛋白質來抑制癌症所引致的肌肉萎縮,結果適目而待。491Please respect copyright.PENANAU0r5GfKoIV
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。491Please respect copyright.PENANAfRKB0dweCV
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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/toc491Please respect copyright.PENANA3561uHtNdM
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。491Please respect copyright.PENANAkoh3ENiuib
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Link:491Please respect copyright.PENANAqHTvjD8hXH
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio491Please respect copyright.PENANANNFqqjpj9D
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除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。491Please respect copyright.PENANAiqPn3t7slz
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Ref1:https://pubmed.ncbi.nlm.nih.gov/29875463/491Please respect copyright.PENANAWNA1b0azEF
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #203
三十秒科學–癌症所導致的體重流失(4)
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