血处理液体 (PTL) 的不同方面如何影响其抗菌性质
Kristína Trebulová1, Kamila Klementová2, Svatava Bednaříková2
1Faculty of Chemistry, Brno University of Technology, Purkyňova 464, Brno, 612 00, Czech Republic. xctrebulovak@vutbr.cz.
Scientific reports
|September 29, 2025
概括
与单个化学成分或pH调整相比,与等离子体处理的液体 (PTLs) 对葡萄球菌和伪omonas细菌的消毒效率更高. 这突出了PTLs.
科学领域:
- 微生物学 微生物学
- 等离子体物理学的物理学
- 生物化学 生物化学
背景情况:
- 葡萄球菌和 Pseudomonas 种类是各种感染的重要原因.
- 血处理液体 (PTLs) 正在成为潜在的抗菌剂.
- 了解PTL抗菌活性机制对于应用至关重要.
研究的目的:
- 评估不同PTLs对Staphylococcus和Pseudomonas的消毒有效性.
- 通过将它们与单个反应性物种和pH调整的溶液进行比较,剖析PTL的抗菌机制.
- 调查接触时间对PTL抗菌活性的影响.
主要方法:
- 细菌悬浮物 (临床分离物和参考菌株) 暴露于各种PTLs.
- 进行比较的溶液包括标准的活性物种 (H2O2,酸盐,酸盐),模拟的PTL成分和pH调整的溶液.
- 对抗微生物效应的评估是在10分钟至24小时的接触时间内进行的.
主要成果:
- PTLs的抗微生物疗效明显高于所有比较解决方案.
- 单个反应性物种,模拟的PTL组合物和经pH调整的溶液与PTL疗效不匹配.
- 根据配方和细菌物种,PTL的有效性有所不同,pH对一些细菌起着关键作用.
结论:
- 通过PTLs间接冷血治疗具有强大的抗菌应用潜力.
- PTL的有效性来自于超出单个成分或pH值的因素的复杂相互作用.
- 格拉姆阴性和格拉姆阳性细菌对PTLs表现出不同的反应,受细胞壁结构和抗氧化能力的影响.
相关概念视频
01:28Antimicrobial Effectiveness
908
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
908
01:18Surface Membrane Barriers
2.6K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
2.6K
01:27Chemical Agents for Microbial Control
763
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
763
01:26Physical Methods for Controlling Microbial Growth: Radiation and Filtration
999
Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
999
01:28Biological Methods for Microbial Control
788
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
788