Telegram Group & Telegram Channel
暴力引发的基因表观遗传能持续数代

2025-02-28 18:21 by 彗星来临

1982 年,叙利亚政府军在老阿萨德的命令下在哈马市屠杀了数万本国居民。40 年后,反叛武装借助大屠杀的记忆推翻了阿萨德家族的统治。这次大屠杀的记忆也印刻了基因里,首次在人类身上提供了压力跨代遗传的证据。我们的基因本身不会因为生活经历而改变,但基因表达会。为了适应压力环境,细胞会在基因上添加化学标记以改变其行为。研究人员跟踪了叙利亚移民家族的三代人,部分家族经历了哈马市暴力袭击事件,部分家庭没有。研究人员从 48 个家庭 138 人身上收集了遗传样本,分析了 DNA 的表观遗传修饰。在哈马幸存者的孙辈中,研究人员发现基因组中有 14 个区域因祖母所经历的暴力事件而发生改变,表明压力引起的表观遗传变化确实能在多代人中间遗传。暂时不清楚表观遗传变化对人生活的影响。此前有研究指出饥荒引发的表观遗传变化会增加后代在成年后肥胖的几率。

Eurekalert:Violence alters human genes for generations, researchers discover

#生物技术



group-telegram.com/solidot/26506
Create:
Last Update:

暴力引发的基因表观遗传能持续数代

2025-02-28 18:21 by 彗星来临

1982 年,叙利亚政府军在老阿萨德的命令下在哈马市屠杀了数万本国居民。40 年后,反叛武装借助大屠杀的记忆推翻了阿萨德家族的统治。这次大屠杀的记忆也印刻了基因里,首次在人类身上提供了压力跨代遗传的证据。我们的基因本身不会因为生活经历而改变,但基因表达会。为了适应压力环境,细胞会在基因上添加化学标记以改变其行为。研究人员跟踪了叙利亚移民家族的三代人,部分家族经历了哈马市暴力袭击事件,部分家庭没有。研究人员从 48 个家庭 138 人身上收集了遗传样本,分析了 DNA 的表观遗传修饰。在哈马幸存者的孙辈中,研究人员发现基因组中有 14 个区域因祖母所经历的暴力事件而发生改变,表明压力引起的表观遗传变化确实能在多代人中间遗传。暂时不清楚表观遗传变化对人生活的影响。此前有研究指出饥荒引发的表观遗传变化会增加后代在成年后肥胖的几率。

Eurekalert:Violence alters human genes for generations, researchers discover

#生物技术

BY Solidot


Warning: Undefined variable $i in /var/www/group-telegram/post.php on line 260

Share with your friend now:
group-telegram.com/solidot/26506

View MORE
Open in Telegram


Telegram | DID YOU KNOW?

Date: |

In a message on his Telegram channel recently recounting the episode, Durov wrote: "I lost my company and my home, but would do it again – without hesitation." But Telegram says people want to keep their chat history when they get a new phone, and they like having a data backup that will sync their chats across multiple devices. And that is why they let people choose whether they want their messages to be encrypted or not. When not turned on, though, chats are stored on Telegram's services, which are scattered throughout the world. But it has "disclosed 0 bytes of user data to third parties, including governments," Telegram states on its website. Groups are also not fully encrypted, end-to-end. This includes private groups. Private groups cannot be seen by other Telegram users, but Telegram itself can see the groups and all of the communications that you have in them. All of the same risks and warnings about channels can be applied to groups. "Russians are really disconnected from the reality of what happening to their country," Andrey said. "So Telegram has become essential for understanding what's going on to the Russian-speaking world." Telegram was co-founded by Pavel and Nikolai Durov, the brothers who had previously created VKontakte. VK is Russia’s equivalent of Facebook, a social network used for public and private messaging, audio and video sharing as well as online gaming. In January, SimpleWeb reported that VK was Russia’s fourth most-visited website, after Yandex, YouTube and Google’s Russian-language homepage. In 2016, Forbes’ Michael Solomon described Pavel Durov (pictured, below) as the “Mark Zuckerberg of Russia.”
from tw


Telegram Solidot
FROM American