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Photodynamic Therapy Is Effective Against Candida auris Biofilms.
Frontiers in Cellular and Infection Microbiology ( IF 4.6 ) Pub Date : 2021-09-03 , DOI: 10.3389/fcimb.2021.713092
Priyanka S Bapat 1, 2 , Clarissa J Nobile 1, 3
Affiliation  

Fungal infections are increasing in prevalence worldwide. The paucity of available antifungal drug classes, combined with the increased occurrence of multidrug resistance in fungi, has led to new clinical challenges in the treatment of fungal infections. Candida auris is a recently emerged multidrug resistant human fungal pathogen that has become a worldwide public health threat. C. auris clinical isolates are often resistant to one or more antifungal drug classes, and thus, there is a high unmet medical need for the development of new therapeutic strategies effective against C. auris. Additionally, C. auris possesses several virulence traits, including the ability to form biofilms, further contributing to its drug resistance, and complicating the treatment of C. auris infections. Here we assessed red, green, and blue visible lights alone and in combination with photosensitizing compounds for their efficacies against C. auris biofilms. We found that (1) blue light inhibited and disrupted C. auris biofilms on its own and that the addition of photosensitizing compounds improved its antibiofilm potential; (2) red light inhibited and disrupted C. auris biofilms, but only in combination with photosensitizing compounds; and (3) green light inhibited C. auris biofilms in combination with photosensitizing compounds, but had no effects on disrupting C. auris biofilms. Taken together, our findings suggest that photodynamic therapy could be an effective non-drug therapeutic strategy against multidrug resistant C. auris biofilm infections.

中文翻译:

光动力疗法对耳念珠菌生物膜有效。

真菌感染在世界范围内的流行率正在增加。可用抗真菌药物种类的缺乏,加上真菌中多药耐药性的增加,导致真菌感染治疗面临新的临床挑战。耳念珠菌是最近出现的多药耐药人类真菌病原体,已成为全球公共卫生威胁。C. auris 临床分离株通常对一种或多种抗真菌药物类别具有抗性,因此,对于开发有效对抗 C. auris 的新治疗策略存在高度未满足的医学需求。此外,耳念珠菌具有多种毒力特征,包括形成生物膜的能力,进一步导致其耐药性,并使耳念珠菌感染的治疗复杂化。在这里,我们评估了红色、绿色、和单独的蓝色可见光以及与光敏化合物结合使用,以对抗 C. auris 生物膜。我们发现 (1) 蓝光自身抑制和破坏了 C. auris 生物膜,并且添加光敏化合物提高了其抗生物膜潜力;(2) 红光抑制和破坏 C. auris 生物膜,但只能与光敏化合物结合使用;(3) 绿光与光敏化合物联合抑制 C. auris 生物膜,但对破坏 C. auris 生物膜没有影响。总之,我们的研究结果表明,光动力疗法可能是一种有效的非药物治疗策略,可对抗多重耐药性耳念珠菌生物膜感染。我们发现 (1) 蓝光自身抑制和破坏了 C. auris 生物膜,并且添加光敏化合物提高了其抗生物膜潜力;(2) 红光抑制和破坏 C. auris 生物膜,但只能与光敏化合物结合使用;(3) 绿光与光敏化合物联合抑制 C. auris 生物膜,但对破坏 C. auris 生物膜没有影响。总之,我们的研究结果表明,光动力疗法可能是一种有效的非药物治疗策略,可对抗多重耐药性耳念珠菌生物膜感染。我们发现 (1) 蓝光自身抑制和破坏了 C. auris 生物膜,并且添加光敏化合物提高了其抗生物膜潜力;(2) 红光抑制和破坏 C. auris 生物膜,但只能与光敏化合物结合使用;(3) 绿光与光敏化合物联合抑制 C. auris 生物膜,但对破坏 C. auris 生物膜没有影响。总之,我们的研究结果表明,光动力疗法可能是一种有效的非药物治疗策略,可对抗多重耐药性耳念珠菌生物膜感染。(3) 绿光与光敏化合物联合抑制 C. auris 生物膜,但对破坏 C. auris 生物膜没有影响。总之,我们的研究结果表明,光动力疗法可能是一种有效的非药物治疗策略,可对抗多重耐药性耳念珠菌生物膜感染。(3) 绿光与光敏化合物联合抑制 C. auris 生物膜,但对破坏 C. auris 生物膜没有影响。总之,我们的研究结果表明,光动力疗法可能是一种有效的非药物治疗策略,可对抗多重耐药性耳念珠菌生物膜感染。
更新日期:2021-09-03
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