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。1493Please respect copyright.PENANAbqdTkqNZ8l
1493Please respect copyright.PENANAi3q2BtsIxv
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。1493Please respect copyright.PENANArW5w9vzzgw
1493Please respect copyright.PENANA3UFaORzJvl
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。1493Please respect copyright.PENANAHcwa2hJzTV
1493Please respect copyright.PENANAGBEotfV6G0
1493Please respect copyright.PENANAVUwzgD6QJI
(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1493Please respect copyright.PENANA1nG2LQNWAm
(Apocrine Sweat Glands)1493Please respect copyright.PENANAhPy9SkPW1J
1493Please respect copyright.PENANAJz22yrz36E
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。1493Please respect copyright.PENANAu8j5cIWxhD
1493Please respect copyright.PENANACpsc7StVJz
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。1493Please respect copyright.PENANAKQ1zAeZtvS
1493Please respect copyright.PENANAVcqsNwhJNO
而大汗腺的主要功能,到目前為止仍未能搞得清楚。1493Please respect copyright.PENANApzC6po3b9Y
1493Please respect copyright.PENANAavsJTeXs5d
1493Please respect copyright.PENANAfTbYZLbnZb
1493Please respect copyright.PENANACFSKOR10X9
(圖2)下列三點為文中所找出的異味散發機制。1493Please respect copyright.PENANAbDaP5vl6kd
1493Please respect copyright.PENANA9vEVBHCXPv
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1493Please respect copyright.PENANAbzy28JMVKQ
1493Please respect copyright.PENANAKPDnUCjpXU
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1493Please respect copyright.PENANAqQPnYVgeZn
1493Please respect copyright.PENANARxCUwdR07A
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。1493Please respect copyright.PENANAXoOQVuG7TV
1493Please respect copyright.PENANAVA5zOtTbQw
換句話說,腋下的異味就是由這些細菌引致而成的。1493Please respect copyright.PENANAeTK8jc0D3w
1493Please respect copyright.PENANAw7VaWGBbcV
1493Please respect copyright.PENANAT9VO9NuVoA
1493Please respect copyright.PENANAXzoBk8hMWO
(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。1493Please respect copyright.PENANA1y3RgC8yfP
1493Please respect copyright.PENANARAOkjCpGx6
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。1493Please respect copyright.PENANAUUBwcDWhSj
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。1493Please respect copyright.PENANAh4Q0g5wFyc
1493Please respect copyright.PENANAHUMsn1zWM2
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;1493Please respect copyright.PENANAAuvOGbUFvo
1493Please respect copyright.PENANAXYNwTOsZr2
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。1493Please respect copyright.PENANAD16G5egiQV
1493Please respect copyright.PENANAbSXG9Eb1Mg
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。1493Please respect copyright.PENANAlhiXmrYbs9
1493Please respect copyright.PENANApvIyYCPIS1
1493Please respect copyright.PENANA1Y2fkwPLkJ
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。1493Please respect copyright.PENANA99O5rNNJOI
1493Please respect copyright.PENANA9GTZ8A6abW
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/toc1493Please respect copyright.PENANAM3dZHxHChP
1493Please respect copyright.PENANAja8XeJiO4o
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。1493Please respect copyright.PENANADDnWxNmn91
1493Please respect copyright.PENANA1xkP8L6y4n
Link:1493Please respect copyright.PENANAFemf6o8ioK
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1493Please respect copyright.PENANABsyIRKpKhZ
1493Please respect copyright.PENANAM4ARRBPa3L
1493Please respect copyright.PENANASDy2vOgLoH
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。1493Please respect copyright.PENANAK0T3NdeMa0
1493Please respect copyright.PENANAmL4cBsFuk5
Ref1:https://www.nature.com/articles/s41598-020-68860-z1493Please respect copyright.PENANAdmLtcSwCjU
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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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