我們身體的細胞,會否作出多餘或者浪費的事情呢?515Please respect copyright.PENANACBQ7UGWYbv515Please respect copyright.PENANA1YuKnAMJjo
515Please respect copyright.PENANAAXxcaXgVLB
(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。515Please respect copyright.PENANArmScC5djpE515Please respect copyright.PENANASBj4dWV0uI
515Please respect copyright.PENANAfUN4GWikSg
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。515Please respect copyright.PENANANJK9QUuFB7
515Please respect copyright.PENANAFEHgJ7gOsa
(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;515Please respect copyright.PENANATrHWDvX1Yy
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。515Please respect copyright.PENANAowJD1H6QCM
515Please respect copyright.PENANA09UWGHxq2x515Please respect copyright.PENANAoIxA5suBqe
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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。515Please respect copyright.PENANAsOHHEYJtgu
515Please respect copyright.PENANAgIdY6AWH0E
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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。515Please respect copyright.PENANAjO8EwsWfrr
515Please respect copyright.PENANAGZzDiZ1buU
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。515Please respect copyright.PENANABG8RGwcRaE
515Please respect copyright.PENANArBDZyrvd9B
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。515Please respect copyright.PENANAVuIhc92RKq
515Please respect copyright.PENANA00eTPeHWeb
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。515Please respect copyright.PENANAdcwSfFcNVH
515Please respect copyright.PENANAVHbO38T8op
515Please respect copyright.PENANAm6ao0OP0vd
515Please respect copyright.PENANATfTMWavc4q
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。515Please respect copyright.PENANAHBZHAAWGZZ
515Please respect copyright.PENANA9xwW74tKLS
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/toc515Please respect copyright.PENANAM7dp1Fxokp
515Please respect copyright.PENANA6LQGloYMzY
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。515Please respect copyright.PENANAyYOl7PwZa1
515Please respect copyright.PENANAegsIKrN7HZ
Link:515Please respect copyright.PENANAFWzxJ9uc12
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio515Please respect copyright.PENANAwdsdaTeK2x
515Please respect copyright.PENANAOepSgJobR3
515Please respect copyright.PENANApTZKnKIioj
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。515Please respect copyright.PENANAz7Va3ulH5u
515Please respect copyright.PENANAPrDsZWDPvt
Ref1:https://www.nature.com/articles/s41586-021-03221-y515Please respect copyright.PENANAxmzmUoJfb2
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #184
三十秒科學–身體細胞會否進行浪費舉動?
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