長頸鹿是陸上最高的生物,其身體構造亦因此有著與眾不同的地方。288Please respect copyright.PENANA2TnvzZYtQD
288Please respect copyright.PENANAXcRfXc8Hh2
288Please respect copyright.PENANApwYkVX4KyE
(圖2)以血液循環系統方面來說,牠的心臟必須要抵受比其他動物更高的壓力才能把血液輸送到腦部裡頭。288Please respect copyright.PENANADqgnCMmaku
288Please respect copyright.PENANAqSwJbhsodA
288Please respect copyright.PENANAaXrMsg2HHp
同時間,牠亦必須配備完善的機制來調節仰頭吃葉或低頭飲水所帶來的急劇血壓轉變。288Please respect copyright.PENANAjtQiwcYAUb
288Please respect copyright.PENANAkykWG4Rnwu
若然調節失衡的話,很大機會對其他器官構成威脅及傷害。288Please respect copyright.PENANAg3TcKHkDsq
288Please respect copyright.PENANAMySpWmuHXe
288Please respect copyright.PENANAOmMe9I5Bxy
(圖3)研究發現,長頸鹿的FGFRL1基因出現7道沒能在其他動物(包括人類)尋覓得到的變異。288Please respect copyright.PENANABAhRpJoZCJ
288Please respect copyright.PENANAsmPnFaLLyR
288Please respect copyright.PENANAKGq7LfAFqJ
有科學家把老鼠的FGFRL1基因轉換成長頸鹿的版本,並為老鼠們注射會引致高血壓的藥物。288Please respect copyright.PENANAU4wNWr3FXT
288Please respect copyright.PENANAsH9fSmWjiK
正常老鼠的上下壓在藥物影響下錄得了顯著上升,但擁有長頸鹿版本的老鼠其上下壓並沒有出現顯著的上升。288Please respect copyright.PENANAvmOU9w5GT5
288Please respect copyright.PENANAMA9hURRPun
(圖4)最為神奇的是,正常老鼠在藥物的影響下所出現的心肌纖維化徵狀,並沒有出現在長頸鹿版本的老鼠身上。288Please respect copyright.PENANAoxiWC5Nr6b
288Please respect copyright.PENANAK3tVPAmIGg
288Please respect copyright.PENANAQUVNym61xs
科學家正在嘗試拆解長頸鹿FGFRL1基因版本對心臟等方面所影響的機制,若果能透徹亦剖析整套機制,或許可用作建構抵禦高血壓或其他心臟問題的藥物。288Please respect copyright.PENANAwKU1wqg5V5
288Please respect copyright.PENANAdQw2p3q7zV
288Please respect copyright.PENANAJVa0BzW5M6
288Please respect copyright.PENANAIF5ONmLw85
288Please respect copyright.PENANAoJ6jNkK10k
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。288Please respect copyright.PENANAV7YNx4uLpo
288Please respect copyright.PENANAEgj7Op0n5k
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/toc288Please respect copyright.PENANA3bx2FmSixP
288Please respect copyright.PENANANrWvYh8WYR
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。288Please respect copyright.PENANAfBLtHYmtTD
288Please respect copyright.PENANAUn5csreuZu
Link:288Please respect copyright.PENANABYXcDvqcMV
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio288Please respect copyright.PENANAHAV3vSjDh7
288Please respect copyright.PENANA4aXD2owMdM
288Please respect copyright.PENANATN4x8Nj15S
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。288Please respect copyright.PENANAsThPe2Tb8E
288Please respect copyright.PENANAe1LRCQnXgt
Ref1:https://advances.sciencemag.org/content/7/12/eabe9459288Please respect copyright.PENANA8XxnPqSTfi
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #185
三十秒科學–長頸鹿的奧袐
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