《信報視聽頻道》 顧小培 : 洋蔥素紓緩濕疹

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Uploaded by on Jun 25, 2009

瀏覽專題特輯「商營保健」,《信報網站》請來顧小培博士,解開食療之謎。
http://www.hkej.com/template/features/jsp/index.jsp

肥大細胞是免疫系統的哨兵,駐守在皮膚和黏膜中,一旦有外來物質闖進皮膚,例如被蚊叮了一口,有蚊子唾液中的蛋白質走了進來,肥大細胞會盡快召喚淋巴細胞到來迎「敵」。淋­巴細胞怎樣從血管去到皮膚?正是靠肥大細胞用「組織胺」(Histamine)去舒張微絲血管。不過,紅血球和水份亦跟隨滲入皮膚。由於皮膚是一個密不透水的屏障,水份困­於其中,會令皮膚腫起來。水份壓在皮膚中觸覺神經的末梢,便會出現痕癢。洋蔥素(五羥黃酮Quercetin)能抑制轉化組織胺的酵素,能大大減少皮膚內的組織胺,不但防­止濕疹,更可令已滲出皮膚的血和水慢慢被回收進血管。水分一去,便不癢了。
顧小培博士在《信報財經新聞》撰寫《康和健》專欄,以科學的態度、以深入淺出的手法,為讀者提供珍貴的資訊,對中風、糖尿病、癌症、肝硬化、肺病、關節炎等素有研究。

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