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。2032Please respect copyright.PENANAdA3UmE4oN7
2032Please respect copyright.PENANA4zoOylg3jq
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。2032Please respect copyright.PENANAHPxWaNDD04
2032Please respect copyright.PENANAikZxunyanx
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。2032Please respect copyright.PENANAGlShr0wNOB2032Please respect copyright.PENANARAwcB7Pewu
2032Please respect copyright.PENANA4XoULOFzGT
(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2032Please respect copyright.PENANAtIFwouJdrl
(Apocrine Sweat Glands)2032Please respect copyright.PENANAViWHxo7MVW
2032Please respect copyright.PENANAepecbCLIYE
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。2032Please respect copyright.PENANAcHTdYBLiz0
2032Please respect copyright.PENANAGSddMxKkRn
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2032Please respect copyright.PENANAM2MabzBWap
2032Please respect copyright.PENANA8bm5TOmCGJ
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2032Please respect copyright.PENANA4Rgin8iPgU
2032Please respect copyright.PENANAEJM5xt6vcy2032Please respect copyright.PENANA0gziA9WjQ8
2032Please respect copyright.PENANApAPKG0a8S9
(圖2)下列三點為文中所找出的異味散發機制。2032Please respect copyright.PENANAfZeJWehwnE
2032Please respect copyright.PENANAAOvmg2PXiJ
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2032Please respect copyright.PENANAbHYh7jMyQA
2032Please respect copyright.PENANAiAK69XlVuY
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2032Please respect copyright.PENANAo4Uzm0hzw5
2032Please respect copyright.PENANAOTqBzdxlG8
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2032Please respect copyright.PENANAJhC7lo0qZ1
2032Please respect copyright.PENANApDb7p2SdzA
換句話說,腋下的異味就是由這些細菌引致而成的。2032Please respect copyright.PENANAVcK3ILBlLo
2032Please respect copyright.PENANA81nG3Z9YEH2032Please respect copyright.PENANAgrlWSYeHzn
2032Please respect copyright.PENANAPHzQnKhLoa
(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。2032Please respect copyright.PENANAEik8eFnzEF
2032Please respect copyright.PENANAHvnXG9VHsw
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。2032Please respect copyright.PENANAiUnwHcE3UT
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。2032Please respect copyright.PENANAJxJ7XQIGiy
2032Please respect copyright.PENANAJVZMTaeM3z
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;2032Please respect copyright.PENANA6JepNw5jja
2032Please respect copyright.PENANA8NzvQgbT8Y
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。2032Please respect copyright.PENANAdaAOCZ03Xm
2032Please respect copyright.PENANA2Pw38DJRtJ
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2032Please respect copyright.PENANAKrVFlM2cpF
2032Please respect copyright.PENANAoJoeqWcHeX
2032Please respect copyright.PENANA8K6E7d5Nje
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。2032Please respect copyright.PENANAiP7WZVXUc7
2032Please respect copyright.PENANAR3hEJhQsXg
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/toc2032Please respect copyright.PENANA6AeJRmWBTw
2032Please respect copyright.PENANASAH4F8icWY
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。2032Please respect copyright.PENANAzcNJN3yys2
2032Please respect copyright.PENANAiaShKG0xxE
Link:2032Please respect copyright.PENANAFhWDW5FjWo
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2032Please respect copyright.PENANAiZkU19LGq0
2032Please respect copyright.PENANAhCzyjMJQFb
2032Please respect copyright.PENANAUBNkIdeAIm
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2032Please respect copyright.PENANAHuedWUBlYS
2032Please respect copyright.PENANALGh2oKITv2
Ref1:https://www.nature.com/articles/s41598-020-68860-z2032Please respect copyright.PENANACI2HmsWdZr
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #24
深入淺出–腋下異味的來源
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