在著重修身的時代上，脂肪是一個較為負面性的用詞。1322Please respect copyright.ＰＥＮＡＮＡh54U6o00xa
1322Please respect copyright.ＰＥＮＡＮＡu2nuYwshKS
而在學術層面上，脂肪大致上可分為三種；1322Please respect copyright.ＰＥＮＡＮＡcVVbH5ogiu
白色脂肪(White Fat)、米色脂肪(Beige Fat)及啡色脂肪(Brown Fat)。1322Please respect copyright.ＰＥＮＡＮＡ3i0jK9A16C
1322Please respect copyright.ＰＥＮＡＮＡwv7IUeCbBV
1322Please respect copyright.ＰＥＮＡＮＡURNtFip3zJ
（圖1）白色脂肪的特徵就是油脂體積非常大，佔據細胞大部份的位置。1322Please respect copyright.ＰＥＮＡＮＡtJvr4AYJCd
而啡色及米色的油脂體積則較為細少，不會佔據細胞大部份位置。1322Please respect copyright.ＰＥＮＡＮＡx4N6GQ5qvp
1322Please respect copyright.ＰＥＮＡＮＡCT62kbinPV
至所以會用顏色來形容及命名脂肪，原因是因為它們所含的鐵質數量不同，越多數量的粒線體(Mitochondria)，鐵質含量便會越高，在顯微鏡的染色片上能夠呈現更深色的啡色;1322Please respect copyright.ＰＥＮＡＮＡYBCsCjGOzO
基於粒線體的性質不同，白色脂肪會將食物的養份轉化成為能量而儲存，而米色及啡色脂肪則會將食物養份轉化成為熱能。1322Please respect copyright.ＰＥＮＡＮＡm7oUEXZhMh
1322Please respect copyright.ＰＥＮＡＮＡpPKBcFgaLf
肚腩，就是由白色脂肪主要構成，任何多餘的營養均會儲存下來。而處於頸部、鎖骨位置及盤骨裡的啡色脂肪，則不會把過剩的能源儲存，一一化作成為熱能。1322Please respect copyright.ＰＥＮＡＮＡQhXgDwn7G5
1322Please respect copyright.ＰＥＮＡＮＡHwHl3LVynx
換句話說，若然我們身體的脂肪全都是啡色脂肪的話，我們所進食的過量營養一一會變作為熱能散走，不會變作成為肚腩。1322Please respect copyright.ＰＥＮＡＮＡ0kwDzUVDYF
1322Please respect copyright.ＰＥＮＡＮＡReME94xOgH
可惜的是，啡色脂肪會隨著年紀增加而減少；我們在嬰兒的時候會有大量啡色脂肪作保溫之用，而長大後則會逐一減少。1322Please respect copyright.ＰＥＮＡＮＡ3xTl5WmFcR
1322Please respect copyright.ＰＥＮＡＮＡHecFMlNeH0
這亦是為何年紀越大越容易擁有大肚腩的其中一個原因。1322Please respect copyright.ＰＥＮＡＮＡZFdJGB9GDl
1322Please respect copyright.ＰＥＮＡＮＡxchhVqeJQ5
1322Please respect copyright.ＰＥＮＡＮＡKvsxc41DL0
1322Please respect copyright.ＰＥＮＡＮＡy6mhJxAEBt
（圖2）將肚腩變成為米色脂肪的話，自當然是減肥的絕世大計!1322Please respect copyright.ＰＥＮＡＮＡCCdUdfNPpJ
1322Please respect copyright.ＰＥＮＡＮＡoSt1DJsT7E
1322Please respect copyright.ＰＥＮＡＮＡ7FSAoIQnWW
1322Please respect copyright.ＰＥＮＡＮＡrn0hPNPvoo
而將肚腩(白色脂肪)變成為米色脂肪，現實上是可行的，這過程我們稱之為Browning。1322Please respect copyright.ＰＥＮＡＮＡVRiot5QSPb
1322Please respect copyright.ＰＥＮＡＮＡVFRVsuKB4D
做運動、長期暴露在寒冷氣候，均會產生出不同荷爾蒙催化Browning發生。1322Please respect copyright.ＰＥＮＡＮＡZvITZx5wOV
現時有不少科學家均積極研究Browning的確實機制，希望可以藉此來把白色脂肪轉化成為米色或啡色脂肪，藉此醫治癡肥及糖尿問題1322Please respect copyright.ＰＥＮＡＮＡORjZzlLSH9
1322Please respect copyright.ＰＥＮＡＮＡMyCIQLPwNJ
1322Please respect copyright.ＰＥＮＡＮＡ3PwdQ644rn
（圖3）近日有科學家發表文章（Ref1)，發表關於啡色脂肪的研究。1322Please respect copyright.ＰＥＮＡＮＡ87QQolQ7LS
1322Please respect copyright.ＰＥＮＡＮＡckrZFNmB7B
1322Please respect copyright.ＰＥＮＡＮＡNybN2W0AKR
1322Please respect copyright.ＰＥＮＡＮＡh0naDHBYjY
他們抽取健康人士頸部的脂肪細胞，並利用CRISPR基因技術把它們催化成為功能類近啡色脂肪的細胞。1322Please respect copyright.ＰＥＮＡＮＡ3xmWwTUiUz
1322Please respect copyright.ＰＥＮＡＮＡS01frWwOvM
他們分別把那名人士的白色脂肪及類近啡色脂肪注射到老鼠身上，作出各式各樣的實驗。1322Please respect copyright.ＰＥＮＡＮＡNZzdJasQUx
1322Please respect copyright.ＰＥＮＡＮＡGQI6Cu18qn
其中一個實驗就是餵食老鼠高脂餐單持續3個月，並證實注射了啡色脂肪的老鼠體重明顯較輕，以及清楚找出了箇中的分子機制。1322Please respect copyright.ＰＥＮＡＮＡ72Sq9oapuJ
1322Please respect copyright.ＰＥＮＡＮＡuP7UB1kFmG
1322Please respect copyright.ＰＥＮＡＮＡFY6rOpLvSV
這一份研究所帶來的啟示，就是日後大有可能可以發展出抽取人類自身頸部的脂肪細胞、再把其轉化成為啡色脂肪注射回該名人士身上的減肥/治療癡肥/糖尿病的手法。1322Please respect copyright.ＰＥＮＡＮＡF5VDMMBaiN
1322Please respect copyright.ＰＥＮＡＮＡCtCF6RiNIc
1322Please respect copyright.ＰＥＮＡＮＡFnVT5jIFmh
1322Please respect copyright.ＰＥＮＡＮＡLHM0U7Z5rO
1322Please respect copyright.ＰＥＮＡＮＡndTBZ58uws
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。1322Please respect copyright.ＰＥＮＡＮＡpY3cYbld0W
1322Please respect copyright.ＰＥＮＡＮＡ2TJu8E8aSU
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/toc1322Please respect copyright.ＰＥＮＡＮＡwvVPBIStFh
1322Please respect copyright.ＰＥＮＡＮＡ1imLvZEsZS
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。1322Please respect copyright.ＰＥＮＡＮＡBrMQBzBvMf
1322Please respect copyright.ＰＥＮＡＮＡapTglqpf7X
Link:1322Please respect copyright.ＰＥＮＡＮＡLuoHg4ucz5
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1322Please respect copyright.ＰＥＮＡＮＡMi1ZXiJUiG
1322Please respect copyright.ＰＥＮＡＮＡJjc24TDtpe
1322Please respect copyright.ＰＥＮＡＮＡI16nZ43ZPm
有興趣接收科普資訊的話，歡迎follow IG: potatopigtongue。1322Please respect copyright.ＰＥＮＡＮＡ6Ntcsuy5W0
1322Please respect copyright.ＰＥＮＡＮＡCZ7VuNH1co
Ref1: https://stm.sciencemag.org/content/12/558/eaaz86641322Please respect copyright.ＰＥＮＡＮＡxetgq8wxyo
Penana
search
登入arrow_drop_down
註冊arrow_drop_down
