油並無法容易溶於水裡,因此當脂肪從我們身體的血液循環系統時,便需要依靠蛋白質的輔助,合體成為脂蛋白(Lipoprotein),才能方便於血液中流動行走。893Please respect copyright.PENANAuLZ8cWffkR893Please respect copyright.PENANANRAdhbpRrt
893Please respect copyright.PENANAxN42eJaOfH
(圖2)根據密度及體積,脂蛋白可分成為不同種類。893Please respect copyright.PENANAQ3KWrEJyp2893Please respect copyright.PENANARuR0gNM8QC
893Please respect copyright.PENANACNqHoMK5Tw
Low Density Lipoprotein(LDL)主要負責從肝臟把油脂傳送到各器官,而血液LDL含量長期高企的話,患上心臟病或中風的機會亦會高企,因此經常被冠稱為壞膽固醇。893Please respect copyright.PENANAsbFW4e7had
893Please respect copyright.PENANAdS4H3AbMzp
而當細胞尤其是肝臟細胞內的膽固醇過多的話,便會以High Density Lipoprotein(HDL)的形式排出細胞外。893Please respect copyright.PENANArtSPWp87mR
細胞內含有過多膽固醇的話便會觸發細胞進行死亡的機制,基於HDL能把它們帶出細胞外,避免壞事發生,因此亦被稱之為好膽固醇。893Please respect copyright.PENANA7opa5kZzLo
893Please respect copyright.PENANAMoC0nMjeyS
893Please respect copyright.PENANACnSvcCImmT
(圖3)細胞可從外間直接攝取膽固醇,又或者是從其他原料自行製作膽固醇。893Please respect copyright.PENANA5fJBAYzOXr893Please respect copyright.PENANAAQ2ALpGC5g
893Please respect copyright.PENANATsDgw9cGeW
降膽固醇藥Statin能夠抑制其中一隻參與製作膽固醇過程的酶素,導致膽固醇的製作無法順利完成。893Please respect copyright.PENANAUhuW9JeZvW
893Please respect copyright.PENANAAVnczFJAnM
而細胞在藥物的誤導下,以為是自己因為吸收不足夠的LDL,所以無法製作膽固醇,因此便會增大吸收外間LDL的能力,得出的結果就是把血液裡的壞膽固醇含量大幅度下降。893Please respect copyright.PENANAXYpJLriEcf
893Please respect copyright.PENANAc7zu1qn1Th
能降低血液LDL含量固然是一件好事,畢竟血液LDL含量與心臟病中風等疾病有著密切的關聯。893Please respect copyright.PENANALooYwWPReX
但亦有一些統計數據指出服用Statin會增加患癌風險,其機制現時尚未能搞得清楚。893Please respect copyright.PENANAo40DGMn41b
893Please respect copyright.PENANAkT8pxEamAZ
Statin藥物所抑制的製作膽固醇的機制,箇中亦包含其他有用的有機物及代謝物製作。893Please respect copyright.PENANACSvIwawpNG
干涉到那些有機物的製作會否促成癌症生長,還需要大量的研究作出探討。893Please respect copyright.PENANAC0735D920S
893Please respect copyright.PENANAU1TQ1hzoSS
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。893Please respect copyright.PENANAc3Z1cQoBcL
893Please respect copyright.PENANAGsN6bvJYmH
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/toc893Please respect copyright.PENANAfHx3fzXRkD
893Please respect copyright.PENANAcv277iJfNC
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。893Please respect copyright.PENANAbPhUtlCj2u
893Please respect copyright.PENANA4218DoZ4f0
Link:893Please respect copyright.PENANAZL0lRvuGsK
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio893Please respect copyright.PENANACgbIXCgDu4
893Please respect copyright.PENANApfnuqb7l5Z
893Please respect copyright.PENANA58G49jqU4N
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。893Please respect copyright.PENANAQCKGsLliMS
893Please respect copyright.PENANAkII6gFjgNU
Ref1:https://pubmed.ncbi.nlm.nih.gov/8561503/893Please respect copyright.PENANAX3quLV9hGY
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7225778/893Please respect copyright.PENANAtYQOUrHnRK
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #165
三十秒科學–降膽固醇藥
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