由我們出世一刻起,心臟便不辭勞苦工作,將血液送至全身,沒有休息的一刻。624Please respect copyright.PENANAlg3DUMYJcU624Please respect copyright.PENANATN6Kfe9fuU
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你又有沒有想過,心臟究竟係「食咩大㗎呢」?624Please respect copyright.PENANAruTwJ2LtEz
624Please respect copyright.PENANApMsAt383eP
(圖2)有科學家為了解答這個問題,找來110個病人(87個心臟正常,23個心臟出現問題),請示測試者禁食一晚,然後再進行全身麻醉。624Please respect copyright.PENANAShyx7GAOm7624Please respect copyright.PENANAo7H6t8jUPs
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在麻醉期間的1小時裡,分別抽取對應部份血管的血液,從而計算出心臟及腳部的新陳代謝狀況(Ref1)。624Please respect copyright.PENANAiKPtghAmrP
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(圖3)綜合所有證據顯示,心臟同腳部均會大量吸收Ketone Bodies,Acetate及Glutamate。624Please respect copyright.PENANAHPjQcIEuve624Please respect copyright.PENANAXYuHxJRi9p
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有趣的是,腳部會選擇性地吸收飽和脂肪酸,而放出非飽和脂肪酸,624Please respect copyright.PENANAMX36dld5oC
但心臟莫論飽和與否均會全數吸收,其中脂肪酸更成為了它能量來源70%有多。624Please respect copyright.PENANA6b4GMLfxt1
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某程度上可以說心臟是「食脂肪大的」。624Please respect copyright.PENANAt55bFm6VFu
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另外,心臟同腳部均有釋放氨基酸的跡象,顯示細胞的蛋白質一直處於分解狀態,而心臟其速度比腳部快10倍有多。624Please respect copyright.PENANAbwLtXikBkX
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對比健康心臟及心臟出現問題的病人,出現問題的心臟會吸取更多的Ketone Bodies及增加氨基酸的釋放數量。624Please respect copyright.PENANA8VDUtirguQ
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究竟吸取更多的Ketone Bodies和增加氨基酸釋放量是為了阻擋心臟出現進一步惡化,還是因為出現問題所致而成,這方面還需要進一步的研究。624Please respect copyright.PENANAp9O3LpFD31
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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。624Please respect copyright.PENANAM65BQEn4tc
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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/toc624Please respect copyright.PENANAa10lA1HOFO
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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。624Please respect copyright.PENANAdahzwBwbxr
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Link:624Please respect copyright.PENANA4D3BwB6PdB
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio624Please respect copyright.PENANA9DpEesC9j8
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。624Please respect copyright.PENANA7r9rFu6uRP
https://www.instagram.com/potatopigtongue/624Please respect copyright.PENANAUE2RX8Du6t
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Ref1:https://science.sciencemag.org/content/370/6514/364624Please respect copyright.PENANAAI2vfWfXhP