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免疫反应在白天更强

2025-05-28 15:38 by 王牌飞行员

众所周知,昼夜节律混乱会削弱免疫系统。一项利用透明斑马鱼的研究发现,对细菌感染的免疫反应强度在白天达到峰值。研究人员认为这是一种演化反应,因为人类和斑马鱼等昼行性动物在白天最活跃,也更容易受到细菌感染。研究人员针对的是中性粒细胞,属于白细胞的一种,专门消灭细菌,是感染的第一反应者,也是人体内最丰富的免疫细胞。但是中性粒细胞寿命极短,从人体血液中分离中性粒细胞非常困难,研究人员因此使用了透明斑马鱼,观察中性粒细胞在一天中不同时间杀灭细菌的效率。结果显示它们在白天的效率比夜晚更高。进一步研究发现,中性粒细胞有一个内部受光调节的生物钟,提醒它们在白天增强杀灭细菌的能力。

theconversation.com/daylight-can-boost-the-immune-systems-ability-to-fight-infections-new-study-257224

#生物技术



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免疫反应在白天更强

2025-05-28 15:38 by 王牌飞行员

众所周知,昼夜节律混乱会削弱免疫系统。一项利用透明斑马鱼的研究发现,对细菌感染的免疫反应强度在白天达到峰值。研究人员认为这是一种演化反应,因为人类和斑马鱼等昼行性动物在白天最活跃,也更容易受到细菌感染。研究人员针对的是中性粒细胞,属于白细胞的一种,专门消灭细菌,是感染的第一反应者,也是人体内最丰富的免疫细胞。但是中性粒细胞寿命极短,从人体血液中分离中性粒细胞非常困难,研究人员因此使用了透明斑马鱼,观察中性粒细胞在一天中不同时间杀灭细菌的效率。结果显示它们在白天的效率比夜晚更高。进一步研究发现,中性粒细胞有一个内部受光调节的生物钟,提醒它们在白天增强杀灭细菌的能力。

theconversation.com/daylight-can-boost-the-immune-systems-ability-to-fight-infections-new-study-257224

#生物技术

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