相关实验视频
Updated: Sep 11, 2025

19:34
Cellular Toxicity of Nanogenomedicine in MCF-7 Cell Line: MTT assay
Published on: April 3, 2009
44.7K
MitoQ减轻了辐射诱导的丸损伤:分子对接和毒性影响
Ayman A Ibrahim1,2, Marwa G El-Gazzar1, Heba M Karam1
1Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
Journal of biochemical and molecular toxicology
|August 13, 2025
概括
针对线粒体的抗氧化剂MitoQ通过减少氧化应激和亡,有效地减轻了玛辐射诱导的丸损伤. MitoQ还改善了类固醇生成和精子质量,显示了治疗辐射诱导的丸损伤的前景.
科学领域:
- 生物医学科学 生物医学科学
- 放射学 放射学是一门学科.
- 药理学 药理学是指药理学的学科.
背景情况:
- 玛辐射可以造成严重的丸损伤,影响生育能力.
- 线粒体功能障碍和氧化应激是辐射诱导的丸损伤的关键机制.
研究的目的:
- 评估线粒体向抗氧化剂MitoQ的保护作用,以防止大鼠在玛辐射引起的丸损伤.
- 研究MitoQ的保护作用的潜在机制.
主要方法:
- 鼠被分为五组:对照组,单独使用MitoQ,单独使用玛辐射,辐射前使用MitoQ进行预处理,辐射后使用MitoQ进行后处理.
- 评估了线粒体的活性氧物种 (ROS),亡标记物 (Bax,Bcl-2),类固醇生成酶 (3β-HSD,17β-HSD),线粒体复合物I和酸脱酶活性,以及精子参数.
- 在小鼠中评估了MitoQ的急性毒性,并使用糖酸脱酶进行了分子对接.
主要成果:
- 通过补充线粒体ROS,MitoQ表现出抗氧化作用.
- MitoQ抑制了内在的亡级联和改善了类固醇生成,由增加的水平和酶表达体现出来.
- MitoQ治疗增强了线粒体复合物I和酸脱酶活性,从而改善了精子质量.
- MitoQ显示出有利的急性毒性特征 (在小鼠中为75 mg/kg) 和与顺酸脱酶的良好分子对接.
结论:
- MitoQ有效地减轻了玛辐射诱导的丸损伤.
- MitoQ的保护机制包括降低氧化应激,抑制亡,改善丸类固醇生成和功能.
- MitoQ代表了一种潜在的治疗策略,用于管理由玛辐射引起的丸损伤.
相关概念视频
Mutagenicity and Carcinogenicity
1.4K
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
1.4K
Biological Effects of Radiation
15.9K
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...
15.9K
Mismatch Repair
5.2K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
5.2K

