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相关概念视频

Forced Transdifferentiation01:28

Forced Transdifferentiation

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Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
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相关实验视频

Updated: Jun 27, 2025

Chronic Stress Shifts Effort-Related Choice Behavior in a Y-Maze Barrier Task in Mice
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皮质有助于饮食诱导的转变后行为重编程在脚.

A M Shephard1, S R Lagon1, S Jacobsen1

  • 1Department of Biology, Indiana University Bloomington, Myers Hall, 915 East 3rd Street, Bloomington IN 47405, USA.

Integrative organismal biology (Oxford, England)
|May 6, 2024
PubMed
概括

早期的生活新饮食可以通过压力激素改变成年人的行为. 在脚中,皮质部分调解这些效应,但不仅仅是驱动它们,这表明复杂的发育重编程.

科学领域:

  • 发育生物学是发展生物学.
  • 内分泌学 在内分泌学.
  • 行为生态学 行为生态学

背景情况:

  • 早期的生活压力会导致长期的现象效应到成年期,通常由葡萄糖皮质激素 (如皮质) 介导.
  • 众所周知,营养素的限制会通过皮质类固醇改变以后的生活行为和压力反应.
  • 皮质在新型饮食资源的转移效应中的作用仍然未被探索.

研究的目的:

  • 为了调查皮质是否在机械上参与平原足幼虫的新型饮食诱导的转载效应.
  • 为了确定幼虫体内经过实验的高皮质水平是否模仿饮食诱导的对青少年行为和压力轴活动的转移效应.

主要方法:

  • 平原脚 (Spea bombifrons) 幼虫被养一种新的饮食或标准的碎饮食.
  • 幼虫也被实验性地用外源性皮质治疗.
  • 在变形后测量了青少年行为 (寻找食物,运动活动) 和皮质水平.

主要成果:

  • 养的幼虫表现出高水平的皮质和改变的青少年行为,包括增加的食物寻找和活动.
  • 在幼虫的实验性皮质治疗中,这些行为变化在幼虫中部分复制.
  • 然而,幼虫的皮质暴露并没有改变青少年的皮质水平,与饮食不同.

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相关实验视频

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结论:

  • 与皮质相关的机制可能有助于平原脚的新型饮食的延续效应.
  • 饮食诱导的转移效应不仅仅是由皮质驱动的,这表明其他因素也参与其中.
  • 这项研究强调了饮食,激素和发育可塑性之间的复杂相互作用.