皮膚受傷的時候,大多數的情況下都會出現結焦情況,過一段時間後傷口便會縫合。913Please respect copyright.PENANAFvpd5XDjPE913Please respect copyright.PENANAHqD0b5kQBB
913Please respect copyright.PENANAjI12cSJKUE
有時候,皮膚會留有疤痕,但又有一些情況下會不留痕跡般似的進行修復,就像沒有事發生過一樣。913Please respect copyright.PENANAPgeiVFslYy
913Please respect copyright.PENANA98mCVsy8GS
究竟最終會否留有疤痕,是看幸運還是甚麼呢?913Please respect copyright.PENANARpQCVvT7kv
913Please respect copyright.PENANAeUHmzgs9NN
913Please respect copyright.PENANANnIyyNmVKe
(圖2)近日,有科學家發表文章(Ref1),對此作出了一個頗為完滿的解答。913Please respect copyright.PENANAyrjk7amiZZ913Please respect copyright.PENANABHwzdx7eVZ
913Please respect copyright.PENANAjbrnDXiASV
他們在老鼠耳仔上開一個細洞,然後再緊密觀察其康復情況。他們發現塗上會引起發炎作用的Imiquimod(IMQ)後,傷口會完美修復不留疤。913Please respect copyright.PENANAXLxQrdtkpC
913Please respect copyright.PENANAMLM7YNVJCV
而在缺乏TRPA1神經細胞的老鼠,就算塗上(IMQ),傷口始終會留有疤痕,表示TRPA1神經細胞在皮膚的修復上顯然有著重要作用。913Please respect copyright.PENANAO2mzwQ34UQ
913Please respect copyright.PENANAJ90aeTtBBW
(圖3)他們進行了一系列的實驗,最終找出了箇中機制,以下為最簡化版本。913Please respect copyright.PENANAKI1c1diaYH913Please respect copyright.PENANAAEZs38GmRJ
913Please respect copyright.PENANADJe0ivJRwN
1.傷口塗上IMQ後,將會引起發炎作用。913Please respect copyright.PENANA9Wf2NPEL1f
2.發炎作用刺激TRPA1神經細胞。913Please respect copyright.PENANA2BcqKfsoAW
3.免疫系統細胞(dermal dendritic cells、γδ T cells)被傳召前來。913Please respect copyright.PENANAwf6ew7d2aU
4.免疫系統細胞釋出相關物質(Interlunkin17、22、23)。913Please respect copyright.PENANAngBDIUIz9R
5.一系列的過程發生過後,肌膚完美修復。913Please respect copyright.PENANAYkDqTGXo9x
913Please respect copyright.PENANAg7F8gE63uh
913Please respect copyright.PENANA6rV2f3OQCM
此研究的結果針對於老鼠的皮膚癒合情況,未必能套用在人類身上,需要作出人體試驗才能廣泛證實此結果。913Please respect copyright.PENANAbS2T8sqbFF
另外,IMQ的塗用時機還需要進一步確認,何時觸發發炎作用才是適當的時機還需要一系列的測試。913Please respect copyright.PENANAfIiEClmT3H
913Please respect copyright.PENANAKJ3NawZ6NF
不過有一點非常重要的是,當人類皮膚受傷的時候,自身是不會主動觸動TRPA1神經細胞。913Please respect copyright.PENANAiZp4ZUmfsX
若然整個結果能套用在人類身上的話,那亦是代表我們日後可塗上適當的藥膏刺激皮膚下的TRPA1細胞,觸發一系列的過程使傷口以不留疤痕的方式完美癒合!913Please respect copyright.PENANAkZm5V8rc2E
913Please respect copyright.PENANAbKeoDJiffK
913Please respect copyright.PENANAJ46Dxi15xd
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。913Please respect copyright.PENANA45EFTVjqR5
913Please respect copyright.PENANAbZKLwvbPXE
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/toc913Please respect copyright.PENANABFnJQvG2qX
913Please respect copyright.PENANAhfpb3IBjw8
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。913Please respect copyright.PENANAc6CEtnxAOZ
913Please respect copyright.PENANA82118q8Ci1
Link:913Please respect copyright.PENANA2oICRroEoF
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio913Please respect copyright.PENANAGiDpxSEeRd
913Please respect copyright.PENANA9QKeHpJ8Jx
最後亦請幫一幫忙簽署袁爸的白宮呈請,幫忙為香港出一份力。913Please respect copyright.PENANA2Oc8eqj1ZL
https://petitions.whitehouse.gov/petition/support-hong-kong-restart-clean-2020-legislative-council-election-now913Please respect copyright.PENANAYg1tIiRimR
913Please respect copyright.PENANAvjaw0RK378
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。913Please respect copyright.PENANALuMigWtl1o
913Please respect copyright.PENANArk5mTUFOWr
Ref1:https://immunology.sciencemag.org/content/5/50/eaba5683
00
ns 15.158.61.15da2