相关实验视频

Updated: Jan 13, 2026

Functional Interrogation of Adult Hypothalamic Neurogenesis with Focal Radiological Inhibition

Functional Interrogation of Adult Hypothalamic Neurogenesis with Focal Radiological Inhibition

Published on: November 14, 2013

大脑辐射通过衰老独立的机制驱动远程肝脏变化

Yuting Jiang¹, Daniëlle C Voshart², Alessandro Gustinelli¹

¹Department of Biomedical Sciences, University Medical Center Groningen, University of Groningen 9700 AD Groningen, Netherlands (the); Department of Radiation Oncology, University Medical Center Groningen, University of Groningen 9700 RB Groningen, Netherlands (the).

Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology

|January 11, 2026

概括

大脑辐射会导致肝脏的变化,如增加的增殖和酶活性,独立于细胞衰老. 需要进一步的研究来确定肝脏中高GFAP是否来自大脑.

科学领域:

神经科学是一个神经科学.
老年学是一门学科.
在瘤学瘤学.

背景情况:

对脑瘤的放射治疗可以损害健康组织,导致神经认知功能障碍.
由DNA损伤引发的细胞衰老与认知能力下降有关,并可能影响远处的器官.
大脑辐射诱导的细胞衰老对外围组织的影响在很大程度上是未知的.

研究的目的:

为了调查大脑辐射是否会在外围组织中诱导细胞衰老.
为了检查大脑辐射对肝功能和细胞标记物的影响.
评估老化剂在减轻辐射诱导变化的潜在作用.

主要方法:

成年雄性大鼠接受了14 Gy X射线脑辐射.
分析了大脑和外围组织 (脏,肠道,肌肉,肝脏) 的衰老标志物,并在设定的时间点进行分析.
肝脏样本被评估为增殖,纤维化和酶活性;老化剂ABT263被管理.

主要成果:

大脑辐射诱导了大脑的衰老,但不是外围组织.
被辐射的老鼠显示肝脏增殖,质纤维酸蛋白 (GFAP) 升高,ALT/AST活性增加.
肝脏变化没有被老化药物ABT263逆转,这表明它们与衰老无关.

结论:

大脑辐射促进肝脏的增殖,并通过可能独立于细胞衰老的机制改变酶活性.
肝脏GFAP升高需要进一步调查以确定其来源,可能来自大脑.
这些发现突出了大脑辐射的潜在系统性影响,超出了直接的组织损伤.

关键词:

脑子脑子脑子脑子大脑与身体的交叉窃听.肝脏肝脏肝脏肝脏衰老是一种衰老.

更多相关视频

Techniques to Induce and Quantify Cellular Senescence

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

Drug-Induced Senescence in Liver Cells Promotes M2 Macrophage Polarization: Implications for Tyrosine Kinase Inhibitor-Associated Hepatotoxicity

Drug-Induced Senescence in Liver Cells Promotes M2 Macrophage Polarization: Implications for Tyrosine Kinase Inhibitor-Associated Hepatotoxicity

Published on: October 17, 2025

相关概念视频

Biological Effects of Radiation

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...

Mutations

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...