癌細胞從原位轉移到另一器官,亦即是Metastasis,是癌病患者主要的死因。540Please respect copyright.PENANA7ph7ZwkKsG540Please respect copyright.PENANAu0vaJjCceW
540Please respect copyright.PENANALAbHjyDt9w
「有趣的是」,癌細胞雖近乎不會轉移到肌肉位置裡頭,但卻能從遠處釋放物質,經由血管抵達肌肉位置,催使肌肉萎縮,亦即是癌症惡病質(cancer cachexia)。540Please respect copyright.PENANASW2LtdEacX
540Please respect copyright.PENANAvCY3UD0Otl
(圖2)肌肉萎縮不但之令病人變得虛弱,難以接近正常劑量的化療,更為致命的是,當心臟肌肉及橫隔膜肌肉亦遭受到萎縮的時候,病人便會因呼吸困難等問題而逝死。540Please respect copyright.PENANAD4uTmnzmyI540Please respect copyright.PENANAqkD0FJgZMI
540Please respect copyright.PENANAlhkeI9i3Gp
早在1858年已有科學家指出cancer cachexia的存在,但至今2021年仍是沒有FDA認可藥物治療cancer cachexia。540Please respect copyright.PENANA4L3vtSrTfs
540Please respect copyright.PENANAzPx54Ml0eb
(圖3)現時有不少臨床研究希望可以制衡cancer cachexia,普遍均是從營養方面入手。540Please respect copyright.PENANAVwXEIAMy5g540Please respect copyright.PENANAEfWeRx147T
540Please respect copyright.PENANAjDk49cCxUc
但結果大多數是只能夠增加病人的脂肪組織,而沒能夠填補已萎縮的肌肉。540Please respect copyright.PENANA4bUgcT3Id5
540Please respect copyright.PENANAFid6w9uB0b
有一點值得注意的是,肌肉細胞並非是死去,純粹是其分解蛋白質的進程比生產蛋白質的進程來得更快,因而形成萎縮。540Please respect copyright.PENANAoIDC5iNBoe
540Please respect copyright.PENANAb8UJtjzYTx
540Please respect copyright.PENANAacPQHlvr9v
(圖4)從研究Cancer cachexia的老鼠模型中可以看到,患癌的老鼠不但更為細小,其手腕的握力度亦有所下降。540Please respect copyright.PENANAWSvV3O589n540Please respect copyright.PENANAChTsO39KUC
540Please respect copyright.PENANAS16a8WbnlL
觀察肌肉細胞橫切面的面積時,亦可以看到肌肉細胞的面積明顯有所縮細。540Please respect copyright.PENANAgLi7ONv3dr
540Please respect copyright.PENANAa7KEBSiiWz
540Please respect copyright.PENANAkgn02d36uM
540Please respect copyright.PENANA6T0weaA7X3
下集將會講解Cancer cachexia的老鼠模型所得出的其中一道結果。540Please respect copyright.PENANAHujz9DPZWL
540Please respect copyright.PENANALIuKBHfhqo
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。540Please respect copyright.PENANAFZW3sfZibI
540Please respect copyright.PENANAJq3TJfy4ve
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/toc540Please respect copyright.PENANAiOrCTlCcsj
540Please respect copyright.PENANAyx4zgmS9rL
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。540Please respect copyright.PENANAcu484l8QqF
540Please respect copyright.PENANAnJvZeRYDro
Link:540Please respect copyright.PENANAu7Qrhwpme6
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio540Please respect copyright.PENANAdhOizsrN2Y
540Please respect copyright.PENANAZfsiDwadDz
540Please respect copyright.PENANALD4UgzqbMx
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。540Please respect copyright.PENANADxkNIrXhkE
540Please respect copyright.PENANA1Th4h4xnR0
Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015555/540Please respect copyright.PENANADKRDyCQTRZ
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #202
三十秒科學–癌症所導致的體重流失(3)
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