我們身體的細胞,會否作出多餘或者浪費的事情呢?342Please respect copyright.PENANAHXb6msdqjT342Please respect copyright.PENANANeLinSoZZl
342Please respect copyright.PENANAy4OhG9Ema9
(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。342Please respect copyright.PENANAPV4gARYsph342Please respect copyright.PENANA0NdTucWaea
342Please respect copyright.PENANAFlIgpHTas3
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。342Please respect copyright.PENANAcM4JFagfTJ
342Please respect copyright.PENANAs4sR8F1Dq1
(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;342Please respect copyright.PENANAuc2gPCTIzX
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。342Please respect copyright.PENANAYXiB9wa7ES
342Please respect copyright.PENANA1lsSrXns5n342Please respect copyright.PENANA34bPn6N0ZG
342Please respect copyright.PENANAVmg92HKvtG
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。342Please respect copyright.PENANAIxUEvlb8VD
342Please respect copyright.PENANADDTELRztci
342Please respect copyright.PENANA20tKz5bDLH
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。342Please respect copyright.PENANAI2UxVeNOcQ
342Please respect copyright.PENANA0PjOed030T
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。342Please respect copyright.PENANAhxUYqwNrOL
342Please respect copyright.PENANAsbFe8clQlk
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。342Please respect copyright.PENANAzE8zIl2X3z
342Please respect copyright.PENANAWFTpXKqwbt
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。342Please respect copyright.PENANAIxbdOY170a
342Please respect copyright.PENANAVtC2dKnvNZ
342Please respect copyright.PENANApNZTfvlfYO
342Please respect copyright.PENANAGePv1DRAzw
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。342Please respect copyright.PENANAemupQT5uo2
342Please respect copyright.PENANAUaAD8FV3LU
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/toc342Please respect copyright.PENANABF3I3of7Jq
342Please respect copyright.PENANA1DcziCr0qV
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。342Please respect copyright.PENANAQcQvQIHR5U
342Please respect copyright.PENANAEDbZxeqLjv
Link:342Please respect copyright.PENANAguGafSxlqI
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio342Please respect copyright.PENANAG9m9j3kPaY
342Please respect copyright.PENANAIOnwpMWJB7
342Please respect copyright.PENANAoj066LrlQQ
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。342Please respect copyright.PENANA0VctGNCJHL
342Please respect copyright.PENANAdh0cdcFqHq
Ref1:https://www.nature.com/articles/s41586-021-03221-y342Please respect copyright.PENANAK2VyGwiFNe
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科普專欄–薯不揀單
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薯仔聞茱莉
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ISSUE #184
三十秒科學–身體細胞會否進行浪費舉動?
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