科普專欄–薯不揀單 - 深入淺出–日常的心臟究竟攝取哪一種營養

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。628Please respect copyright.ＰＥＮＡＮＡ0BAkPHcpHx
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你又有沒有想過，心臟究竟係「食咩大㗎呢」?628Please respect copyright.ＰＥＮＡＮＡYPK9ZSah5f
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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。628Please respect copyright.ＰＥＮＡＮＡHlj81iwD34
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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)。628Please respect copyright.ＰＥＮＡＮＡ6F4Rtp3zj7
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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。628Please respect copyright.ＰＥＮＡＮＡcJk862lpRt
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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，628Please respect copyright.ＰＥＮＡＮＡDy1zxNxUlv
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。628Please respect copyright.ＰＥＮＡＮＡpuPgkdmbOk
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某程度上可以說心臟是「食脂肪大的」。628Please respect copyright.ＰＥＮＡＮＡ22dXhgc18u
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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。628Please respect copyright.ＰＥＮＡＮＡFZULUwIb9j
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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。628Please respect copyright.ＰＥＮＡＮＡ6hcVnS0CyA
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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。628Please respect copyright.ＰＥＮＡＮＡDIO9I5jbBQ
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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。628Please respect copyright.ＰＥＮＡＮＡvqx3ko5g2X
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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/toc628Please respect copyright.ＰＥＮＡＮＡrwBhfO5S8K
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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。628Please respect copyright.ＰＥＮＡＮＡybW53UAhkv
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Link:628Please respect copyright.ＰＥＮＡＮＡFZWrVXzqOA
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio628Please respect copyright.ＰＥＮＡＮＡHlOjS8AzHs
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。628Please respect copyright.ＰＥＮＡＮＡ0sKgMMywcD
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Ref1:https://science.sciencemag.org/content/370/6514/364628Please respect copyright.ＰＥＮＡＮＡ8q4H6uGhJC

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