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。2102Please respect copyright.PENANAxk1fxwaHjq
2102Please respect copyright.PENANAbGQr45p93h
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。2102Please respect copyright.PENANAAThXT1PXAa
2102Please respect copyright.PENANAapxkR8rqxS
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。2102Please respect copyright.PENANA5BNRhjzxES2102Please respect copyright.PENANAaNiFXwgvej
2102Please respect copyright.PENANADZHSclULqQ
(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2102Please respect copyright.PENANAE5FpazfjUf
(Apocrine Sweat Glands)2102Please respect copyright.PENANA2eLzSFAxsG
2102Please respect copyright.PENANAhw4E61uCAd
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。2102Please respect copyright.PENANAQtcOBSq67q
2102Please respect copyright.PENANAAgKLuH7MrX
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2102Please respect copyright.PENANATuQCszEyfr
2102Please respect copyright.PENANANGZQ4EEvNg
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2102Please respect copyright.PENANAxEnSZcK8kT
2102Please respect copyright.PENANAmQ54HVUIjN2102Please respect copyright.PENANA0EqVtXxYOk
2102Please respect copyright.PENANAgtwCqsh3nf
(圖2)下列三點為文中所找出的異味散發機制。2102Please respect copyright.PENANAMOZZu5PDri
2102Please respect copyright.PENANAs1smkShJ4P
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2102Please respect copyright.PENANAoZYQODVBax
2102Please respect copyright.PENANAER8oj9G94N
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2102Please respect copyright.PENANAD0WviU2UtB
2102Please respect copyright.PENANATIBRmtWSr6
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2102Please respect copyright.PENANAXZAeqorLIk
2102Please respect copyright.PENANAJf0CkX4JBR
換句話說,腋下的異味就是由這些細菌引致而成的。2102Please respect copyright.PENANAKpx96Nk6FB
2102Please respect copyright.PENANAcCwdp3poQ32102Please respect copyright.PENANAmInbzuD2wN
2102Please respect copyright.PENANAwlWozPsMsH
(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。2102Please respect copyright.PENANAFraYEZpi5U
2102Please respect copyright.PENANAnnDD6uRGHa
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。2102Please respect copyright.PENANAfcABR2nx5k
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。2102Please respect copyright.PENANAgewtB9ebtj
2102Please respect copyright.PENANAwkeWeuvOfP
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;2102Please respect copyright.PENANAlDsnUJDTQp
2102Please respect copyright.PENANA8yS4FtJAHj
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。2102Please respect copyright.PENANA5UbY3rLJ9k
2102Please respect copyright.PENANA8yJXp0CcXP
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2102Please respect copyright.PENANAohnaQSaNyC
2102Please respect copyright.PENANAdZn0VMXm6r
2102Please respect copyright.PENANAzoJavZVgKd
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。2102Please respect copyright.PENANArYRfdmpWbq
2102Please respect copyright.PENANAqclqJpttjW
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/toc2102Please respect copyright.PENANAef8W7OTGbh
2102Please respect copyright.PENANA2m0Vzk9f30
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。2102Please respect copyright.PENANA0HfxV2Rrpj
2102Please respect copyright.PENANApI1WJ2wg66
Link:2102Please respect copyright.PENANACUbwLAv7lH
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2102Please respect copyright.PENANAeswayvfEkB
2102Please respect copyright.PENANAV3Tq2CZD3C
2102Please respect copyright.PENANAfNyIrF2FUg
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2102Please respect copyright.PENANAuzkEOk6sSG
2102Please respect copyright.PENANA4tITkVpjQf
Ref1:https://www.nature.com/articles/s41598-020-68860-z2102Please respect copyright.PENANAHA3bNgomx8
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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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