阻止化疗引起的脱发

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接受化疗的癌症患者经常经历脱发。尽管是暂时的,但这种影响在情感上令人痛苦,并且不断地以视觉方式提醒着个人的病情。但是今天发表在《科学》杂志上的研究结果可能为预防这种化疗引起的脱发症 (CIA) 指明了方向。许多导致 CIA 的抗癌药物针对细胞周期的特定阶段。因此,它们被证明对正在分裂的细胞具有选择性毒性。毛囊的上皮对这些影响特别敏感,因为它分裂得非常快。先前的研究表明,抑制细胞周期进程可以减少药物的毒性。

因此,考虑到这一点,葛兰素威康的斯蒂芬·T·戴维斯 (Stephen T. Davis) 及其同事着手确定限制 CDK2(所谓的蛋白激酶,它指导细胞周期进程)是否可以对毛囊细胞分裂提供必要的控制以阻止 CIA。因此,他们开发了一组合成 CDK2 抑制剂,并发现用这些化合物治疗可减少 33% 至 50% 的 CIA 大鼠的脱发。将这些化合物局部应用于头皮限制了全身暴露,并避免了稀释化疗抗肿瘤功效的危险。“根据此处提供的证据,”作者断言,“可能需要在癌症患者中进行临床试验,以评估这种预防 CIA 方法的疗效。”

Kate Wong is an award-winning science writer and senior editor at 大众科学 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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