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。1526Please respect copyright.PENANA3aa7Ma2dJh
1526Please respect copyright.PENANA1MJzBNP7It
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。1526Please respect copyright.PENANAYPgdmSxgd2
1526Please respect copyright.PENANA2Ex4u8SLyA
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。1526Please respect copyright.PENANA6zhLUwgGJv
1526Please respect copyright.PENANABZ4Qv4XJwS
1526Please respect copyright.PENANAcvwcB4smN3
(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1526Please respect copyright.PENANAZJAUSE83v0
(Apocrine Sweat Glands)1526Please respect copyright.PENANAQJt1FXNX5I
1526Please respect copyright.PENANABe50cNB9ca
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。1526Please respect copyright.PENANAfYmpAYwcOv
1526Please respect copyright.PENANA0dLFhgxYFA
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1526Please respect copyright.PENANASpDxnSCaLb
1526Please respect copyright.PENANAa0OIqaszkG
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1526Please respect copyright.PENANATGXIs3r9rv
1526Please respect copyright.PENANADSH7axUpYb
1526Please respect copyright.PENANAhSZsZlqoFG
1526Please respect copyright.PENANAbAbMYezXQG
(圖2)下列三點為文中所找出的異味散發機制。1526Please respect copyright.PENANAhkASAkZedB
1526Please respect copyright.PENANA43KUmJxEDU
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1526Please respect copyright.PENANARIZT0yx0vG
1526Please respect copyright.PENANA2AxluD3czz
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1526Please respect copyright.PENANAn9tGRePdRh
1526Please respect copyright.PENANARfmoWOslvb
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1526Please respect copyright.PENANATmmslNok3N
1526Please respect copyright.PENANAcQ3eXY0rQ6
換句話說,腋下的異味就是由這些細菌引致而成的。1526Please respect copyright.PENANAq56hQQAEmB
1526Please respect copyright.PENANArIFOirbtrl
1526Please respect copyright.PENANAxd7fkEaFcN
1526Please respect copyright.PENANAm21wIuWpV2
(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。1526Please respect copyright.PENANAmfKkejsESn
1526Please respect copyright.PENANAR1TfdbBJuL
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。1526Please respect copyright.PENANAzuPSTIBmm4
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。1526Please respect copyright.PENANA766h2YEN2W
1526Please respect copyright.PENANAHRtxZMTcTC
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;1526Please respect copyright.PENANAemtf4hQ1I9
1526Please respect copyright.PENANA7KKVBArUEs
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。1526Please respect copyright.PENANABRGo3ykYsw
1526Please respect copyright.PENANA0wZQgDoZnS
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1526Please respect copyright.PENANAAOvEh2H98W
1526Please respect copyright.PENANAwosDzxe4f8
1526Please respect copyright.PENANAyxTQeDVqRD
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。1526Please respect copyright.PENANAujzBA8CPQd
1526Please respect copyright.PENANAmhxRG6TbfD
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/toc1526Please respect copyright.PENANAhHzIZuc4d0
1526Please respect copyright.PENANAlZh9SGzgF6
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。1526Please respect copyright.PENANAZCHrMWqwv2
1526Please respect copyright.PENANA3gGhlg27E1
Link:1526Please respect copyright.PENANA5SNHe7lWvt
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1526Please respect copyright.PENANATttOrpMe2Q
1526Please respect copyright.PENANALb5ZYtjtvH
1526Please respect copyright.PENANAx5Ubz93VCT
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1526Please respect copyright.PENANA7S6ZUZa9VS
1526Please respect copyright.PENANAn0VOiKKjAl
Ref1:https://www.nature.com/articles/s41598-020-68860-z1526Please respect copyright.PENANA92bhHx8OhO
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #24
深入淺出–腋下異味的來源
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