降低發燒可能是對抗瘧疾的關鍵

加入我們的科學愛好者社群!


關於支援科學新聞業

如果您喜歡這篇文章,請考慮透過以下方式支援我們屢獲殊榮的新聞業 訂閱。 透過購買訂閱,您正在幫助確保未來能夠持續產出關於塑造我們當今世界的發現和想法的具有影響力的故事。


儘管發燒令人不適,但它是身體對抗感染的方式。 然而,就瘧疾而言,這種防禦機制可能會適得其反。 根據本週在美國國家科學院院刊上線上發表的一份報告,發燒使感染瘧疾的紅細胞粘附在血管壁上,這可能導致死亡。

雖然瘧疾的特徵是發燒,但對寄生紅細胞粘附性的研究始終在正常人體溫度下進行。 因此,曼谷瑪希隆大學的尼古拉斯·J·懷特和他的同事決定研究在加熱到瘧疾病例中常見的溫度的血液中感染細胞的行為。 該團隊使用從 12 名患有急性瘧疾感染的患者身上獲得的樣本發現,寄生血液細胞的粘性在加熱後增加。 相比之下,在正常體溫下,血細胞沒有表現出這種粘附性。 其他發現表明,熱誘導的粘性可能來自紅細胞表面蛋白 PfEMP-1 水平的增加。

研究結果為瘧疾患者在發燒階段病情經常顯著惡化的原因提供了新的見解。 它們還表明,與一種流行的學派觀點相反,該學派認為退燒會減緩身體清除寄生蟲的能力,但實際上降低發燒可能阻礙疾病進展並增強抗瘧藥物阻斷寄生蟲發育的能力。

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

More by Kate Wong
© .