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。337Please respect copyright.PENANAKdQrbfM3qI
337Please respect copyright.PENANAQd8K5WZKHS
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。337Please respect copyright.PENANAnUhV2Byd6J
337Please respect copyright.PENANAQodsCMnEEd
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。337Please respect copyright.PENANATq9fzSKK15337Please respect copyright.PENANAW2LBvcgc3P
337Please respect copyright.PENANASlwz3P6e8g
(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337Please respect copyright.PENANAzr5sIGncCv
(Apocrine Sweat Glands)337Please respect copyright.PENANA9EWXZUo84P
337Please respect copyright.PENANAms0cfPH7G6
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。337Please respect copyright.PENANAhAAz5Y4OzG
337Please respect copyright.PENANAlUns5FR549
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。337Please respect copyright.PENANAIeujGICLVp
337Please respect copyright.PENANA0PSCP230MX
而大汗腺的主要功能,到目前為止仍未能搞得清楚。337Please respect copyright.PENANA8DrDa9Ui0V
337Please respect copyright.PENANAbms3rJabKR337Please respect copyright.PENANAchope6hPpr
337Please respect copyright.PENANAJJtnga6jkF
(圖2)下列三點為文中所找出的異味散發機制。337Please respect copyright.PENANAvygWgh0v7u
337Please respect copyright.PENANAehEjlIDRpZ
1.大汗腺釋出無味物質Cys-Gly-3M3SH。337Please respect copyright.PENANANGTMUfOFIM
337Please respect copyright.PENANA0gKzw39XlB
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。337Please respect copyright.PENANAPUc4FbpdNv
337Please respect copyright.PENANAA74clhaokj
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。337Please respect copyright.PENANAf1KMpeec8r
337Please respect copyright.PENANA7nckxoTdSA
換句話說,腋下的異味就是由這些細菌引致而成的。337Please respect copyright.PENANAUruxk9Zocr
337Please respect copyright.PENANA6kqbgDpyRF337Please respect copyright.PENANAFcQhJj3RML
337Please respect copyright.PENANA4hANwlde9n
(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。337Please respect copyright.PENANAMXQtKAl57l
337Please respect copyright.PENANAcvRMXivvXr
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。337Please respect copyright.PENANAojIiGhZhQa
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。337Please respect copyright.PENANAcLy0bkErjK
337Please respect copyright.PENANAVryscha3yP
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;337Please respect copyright.PENANAuUJteP07AU
337Please respect copyright.PENANAHeJVGWhD48
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。337Please respect copyright.PENANAv2EynSpbCG
337Please respect copyright.PENANApKSLilrgy7
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。337Please respect copyright.PENANAAgvTJkOdaZ
337Please respect copyright.PENANAQn5kU17bbh
337Please respect copyright.PENANAp8USh8RKYO
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。337Please respect copyright.PENANAsi7fBwq4fr
337Please respect copyright.PENANAoc4WxUrpK5
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/toc337Please respect copyright.PENANAFnI4A1wPK6
337Please respect copyright.PENANAD1Wp2EHaYi
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。337Please respect copyright.PENANAZmwg6KeOb0
337Please respect copyright.PENANAtbR9TIdSN3
Link:337Please respect copyright.PENANAckGuQ1Ja6b
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio337Please respect copyright.PENANA2Oe23LmBYJ
337Please respect copyright.PENANATL3LGWhPUF
337Please respect copyright.PENANAchIRDa1NZD
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。337Please respect copyright.PENANAYfTWXowjqc
337Please respect copyright.PENANA7rYwiYLHDq
Ref1:https://www.nature.com/articles/s41598-020-68860-z337Please respect copyright.PENANA2uXrNE3kJH
copyright protection333PENANAcPeeRMyuWn
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#24
深入淺出–腋下異味的來源
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