对黄素度和蓝光参数进行系统评估,以对抗致菌微生物的抗微生物光动力疗法进行系统评估
Patricia Comeau1,2, Adriana Manso1
1Department of Oral Health Science, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
Pharmaceutics
|December 23, 2023
概括
使用黄素和蓝光的抗微生物光动力学疗法显示出对抗牙损伤的前景. 这项研究优化了光线参数和黄素度,以提高其对引起腔的微生物的有效性.
科学领域:
- 生物医学工程 生物医学工程
- 微生物学 微生物学
- 摄影化学的使用.
背景情况:
- 牙损是一种普遍的,昂贵的疾病,目前的管理不足.
- 需要采取最少的侵入性策略来减少虫病的发生率.
研究的目的:
- 系统地评估抗微生物光动力疗法 (aPDT) 的光参数和曲素度.
- 为了确定PDT对空白致病微生物的有效性的最佳条件.
主要方法:
- 准备的水性黄素溶液和在蓝光下评估的光吸收.
- 测量了摩尔吸收性,反应性氧物种 (ROS) 释放,MIC,MBC和MFC.
- 对 *Streptococcus mutans* 和 *Candida albicans* 的有效性进行了测试.
主要成果:
- 黄素在培养介质中的摩尔吸收能力受光处理持续时间和能量水平的影响.
- ROS类型和微生物种类影响了对蓝光和应用模式的敏感性.
- 优化的aPDT条件显示出对空致病微生物的潜力.
结论:
- 这项研究为增强基于黄素的aPDT对抗牙病原体提供了关键数据.
- 这些发现有助于开发改善的,最少侵入性的牙损伤管理策略.
相关概念视频
Antimicrobial Effectiveness
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...
Methods to Assess Microbial Populations
Assessing microbial populations is crucial for understanding microbial roles in health, ecology, and industry. Various complementary techniques—both culture-based and molecular—enable detailed analysis of microbial abundance, diversity, and function.Viable Plate CountThe viable plate count is a traditional culture-based method used to estimate the number of living microbes in a sample. After serial dilution, the sample is spread onto nutrient agar plates. Each viable cell forms a visible...
Automated Microbial Diagnostics
Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...


