Telegram Group & Telegram Channel
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



tg-me.com/solidot/27188
Create:
Last Update:

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

BY Solidot


Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283

Share with your friend now:
tg-me.com/solidot/27188

View MORE
Open in Telegram


Solidot Telegram | DID YOU KNOW?

Date: |

At a time when the Indian stock market is peaking and has rallied immensely compared to global markets, there are companies that have not performed in the last 10 years. These are definitely a minor portion of the market considering there are hundreds of stocks that have turned multibagger since 2020. What went wrong with these stocks? Reasons vary from corporate governance, sectoral weakness, company specific and so on. But the more important question is, are these stocks worth buying?

Should You Buy Bitcoin?

In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.

Solidot from us


Telegram Solidot
FROM USA