科普專欄–薯不揀單 - 三十秒科學–身體細胞會否進行浪費舉動？

我們身體的細胞，會否作出多餘或者浪費的事情呢?516Please respect copyright.ＰＥＮＡＮＡE9SvkYnBA5
516Please respect copyright.ＰＥＮＡＮＡtznp4rvsZT
516Please respect copyright.ＰＥＮＡＮＡCybhBW2PYu
（圖2）超級簡化來說，我們細胞內含的粒線體能夠將我們所攝取的營養經由一系列的過程轉化成為ATP。516Please respect copyright.ＰＥＮＡＮＡRb34vIfwEG
516Please respect copyright.ＰＥＮＡＮＡNgYXU03oPt
516Please respect copyright.ＰＥＮＡＮＡtUoLfoUfHR
ATP能夠為細胞提供所需的能源，我們的手腳之所以可以伸縮自如，全賴身體肌肉細胞等耗用ATP才能達成。516Please respect copyright.ＰＥＮＡＮＡD1e024o0Wd
516Please respect copyright.ＰＥＮＡＮＡ4VFQgRkEHx
（圖3）而唯獨在專門製造熱能的啡色脂肪細胞粒線體裡頭，內裡有一隻名為CKB(Creatine Kinase B)的蛋白酶會迅速透過Creatine將大量的ATP立刻轉回為ADP以及Phosphocreatine；516Please respect copyright.ＰＥＮＡＮＡxZx1G5WSPA
肌肉細胞及白色脂肪細胞雖然也會進行這步驟，但效率遠遠低於啡色脂肪細胞。516Please respect copyright.ＰＥＮＡＮＡ0AvEHFbCtV
516Please respect copyright.ＰＥＮＡＮＡ50rQjUFVvy
516Please respect copyright.ＰＥＮＡＮＡvkuTJOmEav
516Please respect copyright.ＰＥＮＡＮＡ9SKaRZbFIv
ADP並不是細胞通用的能量單位，辛辛苦苦將得來的ATP又轉回成為ADP，情形就如在中國大陸境內將辛苦得來的美金(ATP)轉換為人民幣(ADP)一樣，驟眼看起上來超級無謂及浪費。516Please respect copyright.ＰＥＮＡＮＡ9HK17q7x3U
516Please respect copyright.ＰＥＮＡＮＡFSPlzRXoiN
516Please respect copyright.ＰＥＮＡＮＡO0c1GxaYFg
雖然細胞可以透過Phosphocreatine及ADP轉化成為ATP及Creatine，但在咖色脂肪細胞裡頭，這情況在大部分的時間也沒有發生，正如大陸境內沒法能夠兌換人民幣(ADP)為美金(ATP)一樣。516Please respect copyright.ＰＥＮＡＮＡl8psAS4BVs
516Please respect copyright.ＰＥＮＡＮＡ8Kq9q2yKUd
理論上，身體細胞理應發展出一套非常完善的系統，不會做出多餘浪費的行為。516Please respect copyright.ＰＥＮＡＮＡV1HxlnrOZj
516Please respect copyright.ＰＥＮＡＮＡVFAOZZjuYq
而現時開始有證據顯示，這「浪費行為」相信能夠輔助啡色脂肪將營養轉化成為熱能，而非能量的儲存。516Please respect copyright.ＰＥＮＡＮＡpymKAyZ67B
516Please respect copyright.ＰＥＮＡＮＡVN0uEJbjMa
若能夠完整地理解整個機制，或許可透過藥物影響肚腩（白色脂肪）的CKB蛋白酶含量，將肚腩脂肪逐一消耗成為熱能，達減肥之效。516Please respect copyright.ＰＥＮＡＮＡjKHSiEVLyg
516Please respect copyright.ＰＥＮＡＮＡFe9YAGD00T
516Please respect copyright.ＰＥＮＡＮＡC5oNBMslwI
516Please respect copyright.ＰＥＮＡＮＡ0JUJ6qyJdA
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。516Please respect copyright.ＰＥＮＡＮＡBb5nFLdeHR
516Please respect copyright.ＰＥＮＡＮＡEmoWMdsNcl
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/toc516Please respect copyright.ＰＥＮＡＮＡZcruQTNfFe
516Please respect copyright.ＰＥＮＡＮＡTGzbn2qyH2
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。516Please respect copyright.ＰＥＮＡＮＡIehanoU6tM
516Please respect copyright.ＰＥＮＡＮＡ8wwRuT8nAH
Link:516Please respect copyright.ＰＥＮＡＮＡ57f0AjR9ok
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio516Please respect copyright.ＰＥＮＡＮＡ8ddWKsqQJZ
516Please respect copyright.ＰＥＮＡＮＡ3gAhDoEXxL
516Please respect copyright.ＰＥＮＡＮＡdJNWnwhrgu
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。516Please respect copyright.ＰＥＮＡＮＡpZBZGCHik7
516Please respect copyright.ＰＥＮＡＮＡRzQjSqvM0o
Ref1:https://www.nature.com/articles/s41586-021-03221-y516Please respect copyright.ＰＥＮＡＮＡ35OXW6Zkvv

ns3.22.216.30da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章