阻止化療引起的脫髮

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接受化療的癌症患者經常經歷脫髮。儘管是暫時的,但這種影響在情感上令人痛苦,並且不斷地以視覺方式提醒著個人的病情。但是今天發表在《科學》雜誌上的研究結果可能為預防這種化療引起的脫髮症 (CIA) 指明瞭方向。許多導致 CIA 的抗癌藥物針對細胞週期的特定階段。因此,它們被證明對正在分裂的細胞具有選擇性毒性。毛囊的上皮對這些影響特別敏感,因為它分裂得非常快。先前的研究表明,抑制細胞週期程序可以減少藥物的毒性。

因此,考慮到這一點,葛蘭素威康的斯蒂芬·T·戴維斯 (Stephen T. Davis) 及其同事著手確定限制 CDK2(所謂的蛋白激酶,它指導細胞週期程序)是否可以對毛囊細胞分裂提供必要的控制以阻止 CIA。因此,他們開發了一組合成 CDK2 抑制劑,並發現用這些化合物治療可減少 33% 至 50% 的 CIA 大鼠的脫髮。將這些化合物區域性應用於頭皮限制了全身暴露,並避免了稀釋化療抗腫瘤功效的危險。“根據此處提供的證據,”作者斷言,“可能需要在癌症患者中進行臨床試驗,以評估這種預防 CIA 方法的療效。”

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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