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。1030Please respect copyright.PENANAyAMFh2nYHK1030Please respect copyright.PENANApUwO7blVXP
1030Please respect copyright.PENANAROlvDzvkJh
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。1030Please respect copyright.PENANAlhdWRZ7PsR
1030Please respect copyright.PENANA5qUcHCpiu5
究竟最終會否留有疤痕,是看幸運還是甚麼呢?1030Please respect copyright.PENANAOMfeGdePbf
1030Please respect copyright.PENANAnSFf9rY1tO
1030Please respect copyright.PENANANBWQXSWEPu
(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。1030Please respect copyright.PENANAV43IuBDyHX1030Please respect copyright.PENANAevprmVyZkz
1030Please respect copyright.PENANAI5PGfJSCFf
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。1030Please respect copyright.PENANAvnNHgnPi06
1030Please respect copyright.PENANAXEc1kIEnmx
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。1030Please respect copyright.PENANAi5VTWKdNw0
1030Please respect copyright.PENANAiO4HPlDXSS
(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。1030Please respect copyright.PENANA9tOC5VwlZa1030Please respect copyright.PENANArK9WCjNVdj
1030Please respect copyright.PENANAjtJh978HBN
1.傷口塗上IMQ後,將會引起發炎作用。1030Please respect copyright.PENANAPwiMibyrph
2.發炎作用刺激TRPA1神經細胞。1030Please respect copyright.PENANAwT2G3msrGJ
3.免疫系統細胞(dermal dendritic cells、γδ T cells)被傳召前來。1030Please respect copyright.PENANAVtskumnU6X
4.免疫系統細胞釋出相關物質(Interlunkin17、22、23)。1030Please respect copyright.PENANAe5IWTF6fYN
5.一系列的過程發生過後,肌膚完美修復。1030Please respect copyright.PENANAW49C7Rxwl4
1030Please respect copyright.PENANAav2zUpqGTj
1030Please respect copyright.PENANAS41RHWByPq
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。1030Please respect copyright.PENANARzztRyyuJe
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。1030Please respect copyright.PENANAf1bO4w8bYP
1030Please respect copyright.PENANAIQGqEbSAh7
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。1030Please respect copyright.PENANAkmzyK7f8La
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!1030Please respect copyright.PENANAbA0V2fv0rj
1030Please respect copyright.PENANADcGGRj8Hig
1030Please respect copyright.PENANAMlRjZwwSRI
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。1030Please respect copyright.PENANALxRMUivBT5
1030Please respect copyright.PENANAxdFeggoug4
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/toc1030Please respect copyright.PENANAYD7epV7BAg
1030Please respect copyright.PENANAIGy00Q1svd
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。1030Please respect copyright.PENANARHuNAyvbgy
1030Please respect copyright.PENANAgdtaMod36V
Link:1030Please respect copyright.PENANA4jUy1NGQwl
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1030Please respect copyright.PENANAUwudQiR0y3
1030Please respect copyright.PENANAcSrxPiNDiP
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。1030Please respect copyright.PENANA6wTAG6ic87
https://petitions.whitehouse.gov/petition/support-hong-kong-restart-clean-2020-legislative-council-election-now1030Please respect copyright.PENANA7Mpy9CRP7g
1030Please respect copyright.PENANAMn1PT7GEoI
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1030Please respect copyright.PENANAVEXCU17zS8
1030Please respect copyright.PENANAA1vkD9ukzg
Ref1:https://immunology.sciencemag.org/content/5/50/eaba5683
00
ns216.73.216.176da2