科普專欄–薯不揀單 - 三十秒科學–脂肪細胞與糖份

進食含有糖份的食物後，血液胰島素濃度便會上升，輔助細胞們吸取葡萄糖。599Please respect copyright.ＰＥＮＡＮＡMZ5djR6tU6
599Please respect copyright.ＰＥＮＡＮＡ3t5CPz8y3G
599Please respect copyright.ＰＥＮＡＮＡtmuTnE3Zaz
在利用肌肉細胞及脂肪細胞的實驗中，胰島素錄得可以在數分鐘內增強細胞的吸收葡萄糖效率2-10倍有多。599Please respect copyright.ＰＥＮＡＮＡy6UfIrJIVZ
599Please respect copyright.ＰＥＮＡＮＡzocSZBAScw
599Please respect copyright.ＰＥＮＡＮＡuvqol3tyfN
(圖2)細胞需要特定位於表面的蛋白質幫忙，才能有效吸取糖份。599Please respect copyright.ＰＥＮＡＮＡX6rbujRsch
599Please respect copyright.ＰＥＮＡＮＡvMDaRAbgn6
599Please respect copyright.ＰＥＮＡＮＡsx4jwAOnIR
GLUT4是其中一款負責吸取糖份的蛋白質，但它平常所在的位置是在細部內部、而非位於表面。599Please respect copyright.ＰＥＮＡＮＡqjT5EA6zEq
當細胞遇上胰島素的時候，GLUT4就會轉移到細胞表面，加快細胞吸收糖份的效率。599Please respect copyright.ＰＥＮＡＮＡqL9AiPvtbD
599Please respect copyright.ＰＥＮＡＮＡvpWXHRhj1c
599Please respect copyright.ＰＥＮＡＮＡOTz8JZmBOX
(圖3)肌肉細胞及脂肪細胞均擁有GLUT4蛋白質，因此胰島素能增強它們吸取糖份的效率。599Please respect copyright.ＰＥＮＡＮＡISrpmYYdDY
599Please respect copyright.ＰＥＮＡＮＡ8TWgtjvmQz
599Please respect copyright.ＰＥＮＡＮＡMRMXxjIqSY
但兩者不同的是，肌肉會將過量的糖份轉化成為糖原(Glycogen)，599Please respect copyright.ＰＥＮＡＮＡ2i3V7e0HIs
599Please respect copyright.ＰＥＮＡＮＡcTfndrs7gq
而脂肪細胞僅會將過量糖份的5%左右轉化成為糖原，另外的50%轉化成為脂肪(Triglyceride)，其餘的則不會用作儲存。599Please respect copyright.ＰＥＮＡＮＡYy0n0GrkZR
599Please respect copyright.ＰＥＮＡＮＡh1GryruFdZ
599Please respect copyright.ＰＥＮＡＮＡEQhwRgMNw3
值得留意的是，餐後的葡萄糖，僅約20%會被脂肪細胞所吸收，另外80%均由其他細胞使用。599Please respect copyright.ＰＥＮＡＮＡEZJnjObp8R
599Please respect copyright.ＰＥＮＡＮＡKzhO8wLxPg
599Please respect copyright.ＰＥＮＡＮＡIyycbLHx86
599Please respect copyright.ＰＥＮＡＮＡlOeWgjonJe
599Please respect copyright.ＰＥＮＡＮＡhJEC99t65W
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。599Please respect copyright.ＰＥＮＡＮＡToFGqmtaT9
599Please respect copyright.ＰＥＮＡＮＡuXyTWXlHxM
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/toc599Please respect copyright.ＰＥＮＡＮＡiMHrE7bCJs
599Please respect copyright.ＰＥＮＡＮＡVDuccX6EFB
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。599Please respect copyright.ＰＥＮＡＮＡqpmHYqrCvi
599Please respect copyright.ＰＥＮＡＮＡCIJ50qRtt9
Link:599Please respect copyright.ＰＥＮＡＮＡwyrr451Gx8
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio599Please respect copyright.ＰＥＮＡＮＡWlUiNFGUM4
599Please respect copyright.ＰＥＮＡＮＡEko3hAg2Sb
599Please respect copyright.ＰＥＮＡＮＡl917MbOAB8
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。599Please respect copyright.ＰＥＮＡＮＡqKyjoBJJHB
599Please respect copyright.ＰＥＮＡＮＡFi41P8GhbD
Ref1:https://www.cell.com/cell-metabolism/fulltext/S1550-4131(21)00126-1#fig1599Please respect copyright.ＰＥＮＡＮＡPcgt6QcujO

ns216.73.216.190da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章