紫外线C (UV-C) 光疗法用于马类性角质 - 一个体外研究
Mona Hoerdemann1, Dipak K Sahoo1, Rachel A Allbaugh1
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA.
Veterinary ophthalmology
|March 6, 2025
概括
在10mm的15秒紫外线C (UV-C) 光暴露有效地抑制了常见的马类菌病原体 in vitro. 这一剂量显示出临床应用的前景,等待进一步的安全性研究.
科学领域:
- 兽医眼科医生 兽医眼科医生
- 菌类学 菌类学是指菌类学.
- 抗微生物技术 抗微生物技术
背景情况:
- 马类角质化症是马类视力障碍的重要原因之一.
- 性角膜炎通常用局部抗真菌药物治疗,这些药物可能会产生副作用.
- 紫外线C (UV-C) 光提供了一个潜在的非侵入性抗菌治疗模式.
研究的目的:
- 为了评估商业上可用的275nm紫外线-C装置在体外抑制马类真菌病原体中的有效性.
- 为了确定最佳的紫外线C暴露时间和剂量,以获得抗真菌作用,对阿斯伯吉路斯和虫类的抗真菌作用.
- 为了将UV-C处理参数与潜在的角膜安全性相关联.
主要方法:
- 菌分离的阿斯伯吉卢斯和菌种 spp. 暴露于不同距离 (10,15,20毫米) 和持续时间 (5-30秒) 的紫外线,一次性或重复剂量.
- 在潜伏24小时,48小时和72小时后,通过显微镜测量了抑制区的大小.
- 进行了再生生长检查,以评估真菌的完全根除.
主要成果:
- 观察到显著的真菌抑制UV-C剂量低至5s/7.5mJ/cm2在10mm和10s/7mJ/cm2在20mm.
- 10毫米的紫外线暴露时间从5秒增加到15秒,显著扩大了所有孤立的抑制区.
- 在10毫米的15秒暴露导致不同真菌分离物体的抑制区大小相似,尽管距离增加导致了更多的再生.
结论:
- 在10毫米距离 (15秒) 的体外UV-C暴露 (22.5mJ/cm2) 似乎是抑制Aspergillus和Fusarium spp.的最佳剂量.
- 这种UV-C剂量可能与之前报告的角膜安全值保持一致.
- 需要进行进一步的临床前和临床安全研究,以验证UV-C对马类真菌角膜炎的治疗潜力.
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