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Li L, Gao X, Li M, Liu Y, Ma J, Wang X, Yu Z, Cheng W, Zhang W, Sun H, Song X, Wang Z. Relationship between biofilm formation and antibiotic resistance of Klebsiella pneumoniae and updates on antibiofilm therapeutic strategies. Front Cell Infect Microbiol 2024; 14:1324895. [PMID: 38465230 PMCID: PMC10920351 DOI: 10.3389/fcimb.2024.1324895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/02/2024] [Indexed: 03/12/2024] Open
Abstract
Klebsiella pneumoniae is a Gram-negative bacterium within the Enterobacteriaceae family that can cause multiple systemic infections, such as respiratory, blood, liver abscesses and urinary systems. Antibiotic resistance is a global health threat and K. pneumoniae warrants special attention due to its resistance to most modern day antibiotics. Biofilm formation is a critical obstruction that enhances the antibiotic resistance of K. pneumoniae. However, knowledge on the molecular mechanisms of biofilm formation and its relation with antibiotic resistance in K. pneumoniae is limited. Understanding the molecular mechanisms of biofilm formation and its correlation with antibiotic resistance is crucial for providing insight for the design of new drugs to control and treat biofilm-related infections. In this review, we summarize recent advances in genes contributing to the biofilm formation of K. pneumoniae, new progress on the relationship between biofilm formation and antibiotic resistance, and new therapeutic strategies targeting biofilms. Finally, we discuss future research directions that target biofilm formation and antibiotic resistance of this priority pathogen.
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Affiliation(s)
- Lifeng Li
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Xueyan Gao
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Mingchao Li
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Yuchun Liu
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Jiayue Ma
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Xiaolei Wang
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Zhidan Yu
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Weyland Cheng
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Wancun Zhang
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Huiqing Sun
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Xiaorui Song
- Henan International Joint Laboratory of Children’s Infectious Diseases, Department of Neonatology, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Zhaobao Wang
- Energy-rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
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Copur B, Dosler S, Aktas Z, Basaran S, Simsek-Yavuz S, Cagatay A, Oncul O, Ozsut H, Eraksoy H. In vitro activities of antibiotic combinations against mature biofilms of ventilator-associated pneumonia isolates. Future Microbiol 2022; 17:1027-1042. [PMID: 35796076 DOI: 10.2217/fmb-2021-0305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: The authors aimed to determine the efficacy of frequently used antibiotics, alone or in combination, against biofilms of ventilator-associated pneumonia isolates. Materials & methods: The authors determined the MICs, minimum biofilm inhibitory concentrations and minimum biofilm eradication concentrations of meropenem, ciprofloxacin and colistin as well as their combinations against planktonic forms and biofilms of Pseudomonas aeruginosa, Klebsiella pneumoniae and Acinetobacter baumannii clinical isolates. Results: Generally, the minimum biofilm inhibitory concentrations and minimum biofilm eradication concentrations of the antibiotics were 1000-fold higher than their MICs, and synergy was provided by different concentrations of meropenem-colistin and meropenem-ciprofloxacin combinations with checkerboard and time-kill curve methods. Conclusion: The combination of meropenem and ciprofloxacin seems to be a good candidate for the treatment of biofilm-associated infections; none of the concentrations obtained as a result of the synergy test were clinically significant.
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Affiliation(s)
- Betul Copur
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Sibel Dosler
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, Istanbul, 34116, Turkey
| | - Zerrin Aktas
- Department of Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Seniha Basaran
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Serap Simsek-Yavuz
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Atahan Cagatay
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Oral Oncul
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Halit Ozsut
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
| | - Haluk Eraksoy
- Departmant of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, 34093, Turkey
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