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。1511Please respect copyright.PENANAvkQpvmB8cR
1511Please respect copyright.PENANA1fTF7LXFpE
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。1511Please respect copyright.PENANAwdq1GGsB6a
1511Please respect copyright.PENANAgKHU6t1V2B
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。1511Please respect copyright.PENANAwnVK2LoKNe
1511Please respect copyright.PENANAwlNrSnf6fQ
1511Please respect copyright.PENANAR7pmqW0vuQ
(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1511Please respect copyright.PENANALGwB5pTPZ6
(Apocrine Sweat Glands)1511Please respect copyright.PENANAlcq2iMjYh2
1511Please respect copyright.PENANADzxPCm1Rhy
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。1511Please respect copyright.PENANAEOLlyYDhxQ
1511Please respect copyright.PENANA5c0X8FtGPc
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1511Please respect copyright.PENANAf9arofWVHy
1511Please respect copyright.PENANATOaAOMDmDV
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1511Please respect copyright.PENANAauPY4ncTCS
1511Please respect copyright.PENANAilctwRL3J2
1511Please respect copyright.PENANAoG1rz7Dsna
1511Please respect copyright.PENANApc5zOnYWtY
(圖2)下列三點為文中所找出的異味散發機制。1511Please respect copyright.PENANAmxkwxQ62Q3
1511Please respect copyright.PENANAwibRx028PA
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1511Please respect copyright.PENANATjSL2owZor
1511Please respect copyright.PENANAzFiOY1OgNa
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1511Please respect copyright.PENANA7nvhloCPHh
1511Please respect copyright.PENANAEc5SuwF1rl
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1511Please respect copyright.PENANAkyCpTkVKZB
1511Please respect copyright.PENANA0L1ucwhSwh
換句話說,腋下的異味就是由這些細菌引致而成的。1511Please respect copyright.PENANAu32SrCXzFp
1511Please respect copyright.PENANArCLxCA1EV8
1511Please respect copyright.PENANA8inK8kBhzb
1511Please respect copyright.PENANAedIyQV8zyC
(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。1511Please respect copyright.PENANAiRC7TdRjQu
1511Please respect copyright.PENANAwaPOlJyoCm
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。1511Please respect copyright.PENANAPAQwxtgrbt
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。1511Please respect copyright.PENANAqDLlDpcIyv
1511Please respect copyright.PENANAfprSLk15iQ
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;1511Please respect copyright.PENANAnNAAURPDIh
1511Please respect copyright.PENANA9xRg2qZpOY
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。1511Please respect copyright.PENANAGJRShcEdlR
1511Please respect copyright.PENANArLIwoM6GuK
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1511Please respect copyright.PENANAKGPB4TsrCO
1511Please respect copyright.PENANAt1a4nHq0J0
1511Please respect copyright.PENANAses9MneRIR
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。1511Please respect copyright.PENANA6AIpGwNJYU
1511Please respect copyright.PENANAc8CzFakUan
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/toc1511Please respect copyright.PENANAKurflhuNb2
1511Please respect copyright.PENANA6AbtdNPaND
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。1511Please respect copyright.PENANAddOf15cRdo
1511Please respect copyright.PENANAgJFoePoeK6
Link:1511Please respect copyright.PENANAJ1CAszMx4J
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1511Please respect copyright.PENANAq0RFZ1vQQD
1511Please respect copyright.PENANAy5yrCN4cw2
1511Please respect copyright.PENANACNIcshgvL2
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1511Please respect copyright.PENANAJBsiSXIlNZ
1511Please respect copyright.PENANAmS7wtY5Eqg
Ref1:https://www.nature.com/articles/s41598-020-68860-z1511Please respect copyright.PENANAHmx1myWBAe