肠道微生物群在调节环境因素引起的氧化应激中的作用
Natalia Kurhaluk1, Piotr Kamiński2,3, Halina Tkaczenko1
1Institute of Biology, Pomeranian University in Słupsk, Arciszewski St. 22 B, 76-200 Słupsk, Poland.
概括
环境污染物破坏肠道微生物群,导致氧化应激和炎症. 这篇评论探讨了抗击这些健康风险的益生菌和便移植等针对微生物的机制和治疗方法.
科学领域:
- 环境科学
- 微生物学
- 毒理学
背景情况:
- 环境污染物 (金属,微塑料,抗生素) 改变肠道微生物群,诱导失生症和氧化应激.
- 这种失调有助于全身炎症,线粒体功能障碍和肠道屏障完整性的损害.
- 了解这些分子机制对于公共卫生和疾病预防至关重要.
研究的目的:
- 综合分析环境污染物,肠道失调和氧化应激之间的分子机制.
- 审查针对微生物群的治疗干预措施,以减轻污染物引起的氧化损伤.
- 综合最近关于人类和动物健康问题的研究.
主要方法:
- 在2016年至2024年间发表的354项研究的系统审查和综合.
- 包括NF-κB,Nrf2/Keap1,PI3K/AKT,p38-MAPK,JAK/STAT和TLR4/MyD88在内的分子通路的分析.
- 评估治疗策略,如益生菌,益生菌,多,后生菌和便微生物移植.
主要成果:
- 环境污染物通过氧化还原失衡和反应性氧物种过度产生氧化损伤.
- 通过短链脂肪酸的产生和抗氧化活性的破坏,肠道失调会加剧氧化压力.
- 治疗干预措施在调节关键信号通路 (Nrf2,AMPK) 和恢复肠道健康方面具有潜力.
结论:
- 环境污染物通过氧化应激对肠道微生物群和宿主健康构成重大威胁.
- 准肠道微生物群为抵消污染物造成的损害提供了有希望的治疗途径.
- 为了制定有效的应对广泛环境暴露的策略, 需要进一步的研究.
相关概念视频
Oxygen Requirements and Growth Patterns
236
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
236
Radical Autoxidation
2.2K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.2K
Sulfur Assimilation
72
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
72
Peroxisomes
14.3K
Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
14.3K


