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。1491Please respect copyright.PENANAznnrkX0Bs1
1491Please respect copyright.PENANAPtivKwfeQl
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。1491Please respect copyright.PENANAri8v3x1o37
1491Please respect copyright.PENANA3dejuMaf7L
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。1491Please respect copyright.PENANAD07R1hQSDO
1491Please respect copyright.PENANABlmWiGP2C1
1491Please respect copyright.PENANAIVMxB3tZ9B
(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1491Please respect copyright.PENANAIuHJrcI0xI
(Apocrine Sweat Glands)1491Please respect copyright.PENANAwD5A1QMTQw
1491Please respect copyright.PENANAIt0fIffmLK
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。1491Please respect copyright.PENANA48kdI8dtFi
1491Please respect copyright.PENANAYGnAMf7WMt
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1491Please respect copyright.PENANAMvYTitOHpU
1491Please respect copyright.PENANAyJ9PiCycOG
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1491Please respect copyright.PENANAzHjStT5VJa
1491Please respect copyright.PENANA89zW9I4P35
1491Please respect copyright.PENANAxwTpbGC1Kd
1491Please respect copyright.PENANAQvp5NT6Amc
(圖2)下列三點為文中所找出的異味散發機制。1491Please respect copyright.PENANASzgv4LYcpA
1491Please respect copyright.PENANA0InDgOB3ll
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1491Please respect copyright.PENANAMyYFNveVld
1491Please respect copyright.PENANAjNZnPIg0WW
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1491Please respect copyright.PENANAZ3sdqs4SvY
1491Please respect copyright.PENANAAT5UW08Q31
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1491Please respect copyright.PENANAZ0Wkp50mfB
1491Please respect copyright.PENANAIpB59F0GWJ
換句話說,腋下的異味就是由這些細菌引致而成的。1491Please respect copyright.PENANASrHVqvrgEU
1491Please respect copyright.PENANAnFgkeoJcdy
1491Please respect copyright.PENANAEtf1VYG47K
1491Please respect copyright.PENANAepnoRRODWA
(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。1491Please respect copyright.PENANAUEvOiCwCaV
1491Please respect copyright.PENANAJhjZe1X9Il
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。1491Please respect copyright.PENANAsRHRdOmizh
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。1491Please respect copyright.PENANASv0YcBAMFH
1491Please respect copyright.PENANAoUPVXIQi7E
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;1491Please respect copyright.PENANAmKIPvpZJ98
1491Please respect copyright.PENANAU9SGYEBBs2
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。1491Please respect copyright.PENANAOrgrYkZDEv
1491Please respect copyright.PENANAIb72i59lvV
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1491Please respect copyright.PENANAwkIORgoQpC
1491Please respect copyright.PENANAdMuAPvVEPE
1491Please respect copyright.PENANA1D6pjLA5V1
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。1491Please respect copyright.PENANARbdeFXPpXi
1491Please respect copyright.PENANAK9TvAi1UVn
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/toc1491Please respect copyright.PENANAtE3gk1JQf2
1491Please respect copyright.PENANAwJCbFKlKOH
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。1491Please respect copyright.PENANAhkZlUBYX1y
1491Please respect copyright.PENANAInw7vK2bSv
Link:1491Please respect copyright.PENANAjql8PSYH8i
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1491Please respect copyright.PENANAgKokzwuUoM
1491Please respect copyright.PENANATs9RuPapL5
1491Please respect copyright.PENANAC7sE6kdkO2
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1491Please respect copyright.PENANAjwIANcbMfp
1491Please respect copyright.PENANAaCmAnRPxUr
Ref1:https://www.nature.com/articles/s41598-020-68860-z1491Please respect copyright.PENANADpyAZ9IhZs
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科普專欄–薯不揀單
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薯仔聞茱莉
篇 #24
深入淺出–腋下異味的來源
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