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。1512Please respect copyright.PENANAWhsWcbB1V0
1512Please respect copyright.PENANAKT79jvW689
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。1512Please respect copyright.PENANAK5w8yGAqpf
1512Please respect copyright.PENANAS6QnnKZe4b
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。1512Please respect copyright.PENANALoLgRSt78Q
1512Please respect copyright.PENANAMzzwCzLlV1
1512Please respect copyright.PENANA6Ibbi90Ke2
(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1512Please respect copyright.PENANAzGriVedXdk
(Apocrine Sweat Glands)1512Please respect copyright.PENANACjS1nqYhg5
1512Please respect copyright.PENANA1v0Ii9FvGg
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。1512Please respect copyright.PENANA2y8oUJtBLG
1512Please respect copyright.PENANAN6MPeUjZWB
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1512Please respect copyright.PENANAHySqo4flCD
1512Please respect copyright.PENANAyVYOHqH8CJ
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1512Please respect copyright.PENANA9KRz7eQE9R
1512Please respect copyright.PENANAGovbKRvMoy
1512Please respect copyright.PENANAm5GmPIZpEC
1512Please respect copyright.PENANARXLYXp8wJY
(圖2)下列三點為文中所找出的異味散發機制。1512Please respect copyright.PENANAlSMUROexUn
1512Please respect copyright.PENANAHEuFUYCWGl
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1512Please respect copyright.PENANAhN72eINVCm
1512Please respect copyright.PENANASK5mOV8HnH
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1512Please respect copyright.PENANAjMXOumNOyU
1512Please respect copyright.PENANAsRVIieZCaK
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1512Please respect copyright.PENANAc8wCSqKUN3
1512Please respect copyright.PENANATYyr1f9KOD
換句話說,腋下的異味就是由這些細菌引致而成的。1512Please respect copyright.PENANA86PQtYXngc
1512Please respect copyright.PENANAP7PvAyXzXb
1512Please respect copyright.PENANAb3bUFQNLZs
1512Please respect copyright.PENANA7iUL9N4SQA
(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。1512Please respect copyright.PENANAiHTZFXWyHi
1512Please respect copyright.PENANAS3gLip4igR
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。1512Please respect copyright.PENANAiucg7qWXpW
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。1512Please respect copyright.PENANAH6VHiBpVPF
1512Please respect copyright.PENANApod5aRu7g0
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;1512Please respect copyright.PENANA7e3DNFpE3w
1512Please respect copyright.PENANA9zLTmcpKIa
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。1512Please respect copyright.PENANANxtw8haNke
1512Please respect copyright.PENANAEA7YXlUvYG
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1512Please respect copyright.PENANAj5hNyMeixj
1512Please respect copyright.PENANAByuwHD2VEj
1512Please respect copyright.PENANAb0m0oB34MI
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。1512Please respect copyright.PENANAvfBYbGk1vh
1512Please respect copyright.PENANAhbsmDQkg0R
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/toc1512Please respect copyright.PENANAoz0lpkl3rq
1512Please respect copyright.PENANAt6audU28KK
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。1512Please respect copyright.PENANAcylWkM0awk
1512Please respect copyright.PENANAjAbJ8mtvNW
Link:1512Please respect copyright.PENANA6dF6gp2AVJ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1512Please respect copyright.PENANAvBVtmCDrf6
1512Please respect copyright.PENANAiW1czto5dH
1512Please respect copyright.PENANAGaWGAJfPyq
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1512Please respect copyright.PENANAFqfWkUL1Cb
1512Please respect copyright.PENANAUu9FjapKSX
Ref1:https://www.nature.com/articles/s41598-020-68860-z1512Please respect copyright.PENANAi7oB7Eau1E
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科普專欄–薯不揀單
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薯仔聞茱莉
篇 #24
深入淺出–腋下異味的來源
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