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。2148Please respect copyright.PENANAPOZlZsDIz3
2148Please respect copyright.PENANAjoxNZHOzZt
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。2148Please respect copyright.PENANAJeujjjreNm
2148Please respect copyright.PENANAGTSAKO8Mx0
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。2148Please respect copyright.PENANAGMwEqv2bRh2148Please respect copyright.PENANAbWGX2VP0JJ
2148Please respect copyright.PENANAYYHYPhochh
(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2148Please respect copyright.PENANAKPEljTj44v
(Apocrine Sweat Glands)2148Please respect copyright.PENANAI0JzWjAevd
2148Please respect copyright.PENANAT431xWhcv3
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。2148Please respect copyright.PENANAzXttPNbptL
2148Please respect copyright.PENANA11TtL3aKuy
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2148Please respect copyright.PENANAHVD1Rc1EH2
2148Please respect copyright.PENANAORViV6Eopq
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2148Please respect copyright.PENANAsjwIWSPR1G
2148Please respect copyright.PENANAnYLDcnO2WK2148Please respect copyright.PENANA1U406U7O54
2148Please respect copyright.PENANAczknTqJdvh
(圖2)下列三點為文中所找出的異味散發機制。2148Please respect copyright.PENANAckShEgqDLF
2148Please respect copyright.PENANAoO6BPSttYl
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2148Please respect copyright.PENANAwbdOYYgEyb
2148Please respect copyright.PENANArRacr3tphf
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2148Please respect copyright.PENANA0BnNE9wEC7
2148Please respect copyright.PENANAsHPvM9muMm
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2148Please respect copyright.PENANA4ohmG0Xevd
2148Please respect copyright.PENANAx0OwCg1axn
換句話說,腋下的異味就是由這些細菌引致而成的。2148Please respect copyright.PENANAjSGWebdUTy
2148Please respect copyright.PENANAZinBodNNmU2148Please respect copyright.PENANAyGWMYBjsb9
2148Please respect copyright.PENANAOHfuD8QD2R
(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。2148Please respect copyright.PENANAs4QDPIYhpQ
2148Please respect copyright.PENANAKN5CYWyPUK
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。2148Please respect copyright.PENANA7HHlABMwf9
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。2148Please respect copyright.PENANAsvWeyhTA8i
2148Please respect copyright.PENANAWmbE1ZFaSg
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;2148Please respect copyright.PENANAXD9Pb5VA9Y
2148Please respect copyright.PENANAFPbemyTtRe
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。2148Please respect copyright.PENANAuXWH9zU87w
2148Please respect copyright.PENANAAzTRIBh6HN
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2148Please respect copyright.PENANAuwHtZKdLFb
2148Please respect copyright.PENANA5coTfXkzHb
2148Please respect copyright.PENANASqMvvNTav3
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。2148Please respect copyright.PENANAWjAorjTqgA
2148Please respect copyright.PENANAVyh7lP1Bat
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/toc2148Please respect copyright.PENANAM7xTglwgPf
2148Please respect copyright.PENANAEnzLAdI5Xs
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。2148Please respect copyright.PENANAICghvkKzjG
2148Please respect copyright.PENANA9G18uOEUNF
Link:2148Please respect copyright.PENANAFB9ZP5PNJM
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2148Please respect copyright.PENANAtnONV5taYZ
2148Please respect copyright.PENANA9fpG4ByEoA
2148Please respect copyright.PENANAoTK32C4ZhV
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2148Please respect copyright.PENANA0TfCePS9YF
2148Please respect copyright.PENANA3w5SX87haC
Ref1:https://www.nature.com/articles/s41598-020-68860-z2148Please respect copyright.PENANAmBAu27mSw2