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。508Please respect copyright.PENANA39fyLdBSgP
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你又有沒有想過,心臟究竟係「食咩大㗎呢」?508Please respect copyright.PENANACzkWCoNq5j
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(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。508Please respect copyright.PENANACMEOIKscvg
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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)。508Please respect copyright.PENANAYP3HY379Zj
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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。508Please respect copyright.PENANARs3gqCATcJ
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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,508Please respect copyright.PENANA7Yn6catzVh
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。508Please respect copyright.PENANAGjev9MLUzK
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某程度上可以說心臟是「食脂肪大的」。508Please respect copyright.PENANAdGQ8q7XeVg
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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。508Please respect copyright.PENANAqZgNFrt7qk
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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。508Please respect copyright.PENANAODBLxmP91U
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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。508Please respect copyright.PENANAP2hv8Q2I4r
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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。508Please respect copyright.PENANAjqdzsggt4R
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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/toc508Please respect copyright.PENANAltDkkQOLXG
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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。508Please respect copyright.PENANARmJuenzCKS
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Link:508Please respect copyright.PENANAlpnet2pQqi
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio508Please respect copyright.PENANAXUX2Xq9WFH
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。508Please respect copyright.PENANA3QemDpcGCj
https://www.instagram.com/potatopigtongue/508Please respect copyright.PENANANywHGX6s4o
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Ref1:https://science.sciencemag.org/content/370/6514/364508Please respect copyright.PENANAvkb4T0b5mM