如果測量一個人的細胞數量,事實上只有25%是屬於人體細胞,其餘的75%均由細菌及真菌所據。1998Please respect copyright.PENANAskmqlU04wn
1998Please respect copyright.PENANAibjLiYHBdt
細菌及真菌可以說是「無處不在」,它們不但寄宿於我們的皮膚外層,亦同時駐紮在我們身體內的腸道及各器官部位,與我們成呈共生關係。1998Please respect copyright.PENANAT3f5CsgoeH
1998Please respect copyright.PENANAi5QLcyw7cb
最近有科學家發表學術文章(Ref1),講述位於汗腺附近的細菌就是腋下異味的其中一個元兇。1998Please respect copyright.PENANAfMaJMixO8N1998Please respect copyright.PENANAOEajpSBsR0
1998Please respect copyright.PENANADbWswwZcEa
(圖1)我們身體的肝腺大致分為兩種,外分泌汗腺(Eccrine Sweat Glands)及大汗腺1998Please respect copyright.PENANAvPvqIwUkC7
(Apocrine Sweat Glands)1998Please respect copyright.PENANAJPzCcCKdyh
1998Please respect copyright.PENANADtcI8R3CC0
前者接近遍佈全身,不與毛髮連接。後者主要位於腋下、乳頭及私處部位,與毛髮連接。1998Please respect copyright.PENANAIOqfK8qC7E
1998Please respect copyright.PENANAMawgrqkU35
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1998Please respect copyright.PENANATQBydAkiKB
1998Please respect copyright.PENANAk2C003LKMZ
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1998Please respect copyright.PENANAO3O3BONhuG
1998Please respect copyright.PENANAe1nAjkrT4F1998Please respect copyright.PENANALTMxm4DI3t
1998Please respect copyright.PENANAL8csY2xiiQ
(圖2)下列三點為文中所找出的異味散發機制。1998Please respect copyright.PENANAi1Fe3oUdxn
1998Please respect copyright.PENANApnP23YuTfy
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1998Please respect copyright.PENANA5ws8BGVhaX
1998Please respect copyright.PENANAoOeCLMqcA2
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1998Please respect copyright.PENANAS013zjCMP9
1998Please respect copyright.PENANAdT8KmbplW5
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1998Please respect copyright.PENANAhQ6Hv4XfuT
1998Please respect copyright.PENANAbCVQNMVj9I
換句話說,腋下的異味就是由這些細菌引致而成的。1998Please respect copyright.PENANAxXDbFgHSmT
1998Please respect copyright.PENANA8U032Kr0x51998Please respect copyright.PENANA33Xy7psgok
1998Please respect copyright.PENANA9lvTy40hYO
(圖3)為作進一步的證實,科學家利用黃金葡萄球菌作對照實驗。1998Please respect copyright.PENANA3Hg4jgkKdA
1998Please respect copyright.PENANAcGtjWcBA2A
他們發現人葡萄球菌的近親黃金葡萄球菌並沒能夠將無味的Cys-Gly-3M3SH消化成為帶有異味的3M3SH。1998Please respect copyright.PENANATLXfJ3VCS5
但是,當把人葡萄球菌其中一隻酵素轉移到黃金葡萄球菌後,無味的Cys-Gly-3M3SH便能夠被消化成為帶有異味的3M3SH,證實異味是由那隻酵素所致。1998Please respect copyright.PENANAnW4y09ZTwx
1998Please respect copyright.PENANAj0rtz3zrV5
這隻酵素一直以來並沒有被前人發現,亦即是說,只要能夠研發出抑制那隻酵素的止汗劑的話,腋下的大部份異味亦能得以除去;1998Please respect copyright.PENANASsezSxZ0Fd
1998Please respect copyright.PENANAWX9Rxk6FfE
異味的產生,基本上是由硫醇(Thioalcohol)及脂肪酸(Fatty acid)而成。此文章所談及的機制純屬與硫醇的產生有關,沒有觸及脂肪酸那一方面。1998Please respect copyright.PENANAT8PrYUZ71N
1998Please respect copyright.PENANAsWesJpENpS
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1998Please respect copyright.PENANAYEKo02DWCz
1998Please respect copyright.PENANAMzTlx98Z2p
1998Please respect copyright.PENANATsDo11nwpE
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。1998Please respect copyright.PENANA8TAcGzHCW1
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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/toc1998Please respect copyright.PENANAvgiQUKedje
1998Please respect copyright.PENANARzUfeK9FcF
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。1998Please respect copyright.PENANAwUyzKpfbsR
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Link:1998Please respect copyright.PENANAL7H7W1INB3
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1998Please respect copyright.PENANAGfBZNCf0kI
1998Please respect copyright.PENANAsPvoloPLmY
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有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1998Please respect copyright.PENANAfYPYcIjOnT
1998Please respect copyright.PENANATaCU3fBN3u
Ref1:https://www.nature.com/articles/s41598-020-68860-z1998Please respect copyright.PENANAFXVAIPhrRC