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对抗细菌生物膜:治疗持续性感染的当前及新兴抗生物膜策略

Combating Bacterial Biofilms: Current and Emerging Antibiofilm Strategies for Treating Persistent Infections.

作者信息

Abdelhamid Ahmed G, Yousef Ahmed E

机构信息

Department of Food Science and Technology, The Ohio State University, 2015 Fyffe Court, Columbus, OH 43210, USA.

Botany and Microbiology Department, Faculty of Science, Benha University, Benha 13518, Egypt.

出版信息

Antibiotics (Basel). 2023 Jun 3;12(6):1005. doi: 10.3390/antibiotics12061005.

Abstract

Biofilms are intricate multicellular structures created by microorganisms on living (biotic) or nonliving (abiotic) surfaces. Medically, biofilms often lead to persistent infections, increased antibiotic resistance, and recurrence of infections. In this review, we highlighted the clinical problem associated with biofilm infections and focused on current and emerging antibiofilm strategies. These strategies are often directed at disrupting quorum sensing, which is crucial for biofilm formation, preventing bacterial adhesion to surfaces, impeding bacterial aggregation in viscous mucus layers, degrading the extracellular polymeric matrix, and developing nanoparticle-based antimicrobial drug complexes which target persistent cells within the biofilm core. It is important to acknowledge, however, that the use of antibiofilm agents faces obstacles, such as limited effectiveness in vivo, potential cytotoxicity to host cells, and propensity to elicit resistance in targeted biofilm-forming microbes. Emerging next generation antibiofilm strategies, which rely on multipronged approaches, were highlighted, and these benefit from current advances in nanotechnology, synthetic biology, and antimicrobial drug discovery. The assessment of current antibiofilm mitigation approaches, as presented here, could guide future initiatives toward innovative antibiofilm therapeutic strategies. Enhancing the efficacy and specificity of some emerging antibiofilm strategies via careful investigations, under conditions that closely mimic biofilm characteristics within the human body, could bridge the gap between laboratory research and practical application.

摘要

生物膜是微生物在生物活性(有生命的)或非生物活性(无生命的)表面形成的复杂多细胞结构。在医学上,生物膜常常导致持续性感染、抗生素耐药性增加以及感染复发。在本综述中,我们强调了与生物膜感染相关的临床问题,并聚焦于当前及新兴的抗生物膜策略。这些策略通常旨在破坏群体感应(这对生物膜形成至关重要)、防止细菌黏附于表面、阻止细菌在黏性黏液层中聚集、降解细胞外聚合物基质,以及开发针对生物膜核心内持久性细胞的基于纳米颗粒的抗菌药物复合物。然而,必须认识到,使用抗生物膜药物面临诸多障碍,如体内有效性有限、对宿主细胞潜在的细胞毒性以及在靶向形成生物膜的微生物中引发耐药性的倾向。我们强调了新兴的下一代抗生物膜策略,这些策略依赖多管齐下的方法,并且受益于纳米技术、合成生物学和抗菌药物发现方面的当前进展。本文对当前抗生物膜缓解方法的评估可为未来创新抗生物膜治疗策略的举措提供指导。通过在紧密模拟人体内生物膜特征的条件下进行仔细研究,提高一些新兴抗生物膜策略的疗效和特异性,可弥合实验室研究与实际应用之间的差距。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f4c3/10294981/a9594a75a6f9/antibiotics-12-01005-g001.jpg

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