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。602Please respect copyright.PENANAP5gzWQYzxw602Please respect copyright.PENANAN4PBe9Ze24
602Please respect copyright.PENANAMIWiy6Q7qv
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。602Please respect copyright.PENANAexcmkiMMEe
602Please respect copyright.PENANA8HaAW6LlKz
602Please respect copyright.PENANAWi3JnWrjst
(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。602Please respect copyright.PENANAnlMVG3yDEF602Please respect copyright.PENANA5qOoTLM9B7
602Please respect copyright.PENANAJFQBiFP0jo
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。602Please respect copyright.PENANAikMD0v5fVF
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。602Please respect copyright.PENANAPLBgOogYpd
602Please respect copyright.PENANAyzTmLFB5PI
602Please respect copyright.PENANA8pgDBGqzXM
(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。602Please respect copyright.PENANA4xdPqtcAtJ602Please respect copyright.PENANAOKD5y9xXhS
602Please respect copyright.PENANAhJ7YEYILK1
但兩者不同的是,肌肉會將過量的糖份轉化成為糖原(Glycogen),602Please respect copyright.PENANA4xpg3J96zj
602Please respect copyright.PENANAgZ1sP9b7NB
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。602Please respect copyright.PENANAbYOWOz2Y7t
602Please respect copyright.PENANA7CsDDZYuer
602Please respect copyright.PENANAJ0SwVPe7zz
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。602Please respect copyright.PENANADr2CClJsR0
602Please respect copyright.PENANAsRNT14tWOP
602Please respect copyright.PENANAQfA1r90keg
602Please respect copyright.PENANAcjzeRNjVkK
602Please respect copyright.PENANAnfccowcTlU
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。602Please respect copyright.PENANAG53kpHCmgH
602Please respect copyright.PENANA0AnH0dOIox
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/toc602Please respect copyright.PENANAKgMnOmlFau
602Please respect copyright.PENANAc3W2C8baCG
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。602Please respect copyright.PENANApLo1mxi3F8
602Please respect copyright.PENANAKo46tLu8Yn
Link:602Please respect copyright.PENANAXGe9VdyoXa
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio602Please respect copyright.PENANAi9hIB0eNsB
602Please respect copyright.PENANAtlHE8Y9PsG
602Please respect copyright.PENANAM8VPYd2v40
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。602Please respect copyright.PENANAsEaGF8so6M
602Please respect copyright.PENANAmNtN2cXEUA
Ref1:https://www.cell.com/cell-metabolism/fulltext/S1550-4131(21)00126-1#fig1602Please respect copyright.PENANANr44tir0E7