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Fernandez JE, Egli A, Overesch G, Perreten V. Time-calibrated phylogenetic and chromosomal mobilome analyses of Staphylococcus aureus CC398 reveal geographical and host-related evolution. Nat Commun 2024; 15:5526. [PMID: 38951499 DOI: 10.1038/s41467-024-49644-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 06/13/2024] [Indexed: 07/03/2024] Open
Abstract
An international collection of Staphylococcus aureus of clonal complex (CC) 398 from diverse hosts spanning all continents and a 30 year-period is studied based on whole-genome sequencing (WGS) data. The collection consists of publicly available genomic data from 2994 strains and 134 recently sequenced Swiss methicillin-resistant S. aureus (MRSA) CC398 strains. A time-calibrated phylogeny reveals the presence of distinct phylogroups present in Asia, North and South America and Europe. European MRSA diverged from methicillin-susceptible S. aureus (MSSA) at the beginning of the 1950s. Two major European phylogroups (EP4 and EP5), which diverged approximately 1974, are the main drivers of MRSA CC398 spread in Europe. Within EP5, an emergent MRSA lineage spreading among the European horse population (EP5-Leq) diverged approximately 1996 from the pig lineage (EP5-Lpg), and also contains human-related strains. EP5-Leq is characterized by staphylococcal cassette chromosome mec (SCCmec) IVa and spa type t011 (CC398-IVa-t011), and EP5-Lpg by CC398-SCCmecVc-t011. The lineage-specific antibiotic resistance and virulence gene patterns are mostly mediated by the acquisition of mobile genetic elements like SCCmec, S. aureus Genomic Islands (SaGIs), prophages and transposons. Different combinations of virulence factors are present on S. aureus pathogenicity islands (SaPIs), and novel antimicrobial resistance gene containing elements are associated with certain lineages expanding in Europe. This WGS-based analysis reveals the actual evolutionary trajectory and epidemiological trend of the international MRSA CC398 population considering host, temporal, geographical and molecular factors. It provides a baseline for global WGS-based One-Health studies of adaptive evolution of MRSA CC398 as well as for local outbreak investigations.
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Affiliation(s)
- Javier Eduardo Fernandez
- Division of Molecular Bacterial Epidemiology and Infectious Diseases, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Adrian Egli
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - Gudrun Overesch
- Center for Zoonoses, Animal Bacterial Diseases and Antimicrobial Resistance, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Vincent Perreten
- Division of Molecular Bacterial Epidemiology and Infectious Diseases, Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.
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2
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Wang N, Li W, Yu H, Huang W, Qiao Y, Wang Q, Wei Y, Deng X, Wang J, Cui M, Zhang P, Zhou Y. Laurocapram, a transdermal enhancer, boosts cephalosporin's antibacterial activity against Methicillin-resistant Staphylococcus aureus. Biochem Pharmacol 2024:116404. [PMID: 38945279 DOI: 10.1016/j.bcp.2024.116404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), a notorious bacterium with high drug resistance and easy recurrence after surgery, has posed significant clinical treatment challenges. In the current scarcity of new antibiotics, the identification of adjuvants to existing antibiotics is a promising approach to combat infections caused by multidrug-resistant Gram-positive bacteria. The in vitro synergy test, which included a MIC assay, time-kill curve, antimicrobial susceptibility testing, and live/dead bacteria staining assay, revealed that laurocapram, a widely used chemical transdermal enhancer, could potentiate the antibacterial activity of cephalosporins against MRSA. In vitro, laurocapram combined with cefixime showed an excellent synergistic activity against MRSA (FICI = 0.28 ± 0.00). In addition, the combination of laurocapram and cefixime may inhibited the formation of MRSA biofilm and caused cell membrane damage. Following that, we discovered that combining laurocapram with cefixime could alleviate the symptoms of mice in the MRSA skin infection model and the MRSA pneumonia model. In conclusion, laurocapram is a promising and low-cost antibacterial adjuvant, providing a new strategy for further exploring the use of lower doses of cephalosporins to combat MRSA infection.
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Affiliation(s)
- Nan Wang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun 130021, China; State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Wei Li
- Department of Gastrocolorectal Surgery, General Surgery Center, The First Hospital of Jilin University, 71 Xinmin Street, Changchun 130021, Jilin, China
| | - Hui Yu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Wenlin Huang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yarui Qiao
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, and School of Life Sciences, Ningxia University, Yinchuan, China
| | - Qi Wang
- College of Life Science, Jilin Agricultural University, 130118 Changchun, China
| | - Yunfei Wei
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xuming Deng
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun 130021, China; State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Jianfeng Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Minhe Cui
- Jilin Mushuo Breeding Co., Ltd, Changchun 130052, Jilin, China
| | - Peng Zhang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun 130021, China.
| | - Yonglin Zhou
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, and School of Life Sciences, Ningxia University, Yinchuan, China.
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Velasco Garcia WJ, Araripe Dos Santos Neto N, Borba Rios T, Rocha Maximiano M, Souza CMD, Franco OL. Genetic basis of antibiotic resistance in bovine mastitis and its possible implications for human and ecological health. Crit Rev Microbiol 2024:1-14. [PMID: 38916977 DOI: 10.1080/1040841x.2024.2369140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 06/11/2024] [Indexed: 06/27/2024]
Abstract
Bovine mastitis is a mammary gland inflammation that can occur due to infectious pathogens, Staphylococcus aureus and Escherichia coli, which are, respectively, the most prevalent Gram-positive and Gram-negative bacteria associated with this disease. Currently, antibiotic treatment has become more complicated due to the presence of resistant pathogens. This review, therefore, aims to identify the most common resistance genes reported for these strains in the last four years. During the review, it was noted that blaZ, blaSHV, blaTEM, and blaampC are the most reported genes for S. aureus and E. coli, associated with drug inactivation, mainly β-lactamases. They are characterized by generating bacterial resistance to β-lactam antibiotics, the most common treatment in animal and human bacterial treatments (penicillins and cephalosporins, among others). Genes associated with efflux systems were also present in the two strains and included norA, tetA, tetC, and tetK, which generate resistance to macrolide and tetracycline antibiotics. Additionally, the effects of spreading resistance between animals and humans through direct contact (such as consumption of contaminated milk) or indirect contact (through environmental contamination) has been deeply discussed, emphasizing the importance of having adequate sanitation and antibiotic control and administration protocols.
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Affiliation(s)
- Wendy Johana Velasco Garcia
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Nilton Araripe Dos Santos Neto
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Universidade de Brasília, Pós-Graduação em Patologia Molecular, Brasília, DF, Brazil
| | - Thuanny Borba Rios
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Mariana Rocha Maximiano
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Camila Maurmann de Souza
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Universidade de Brasília, Pós-Graduação em Patologia Molecular, Brasília, DF, Brazil
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
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4
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Silva V, Ribeiro J, Teixeira P, Pinto P, Vieira-Pinto M, Poeta P, Caniça M, Igrejas G. Genetic Complexity of CC5 Staphylococcus aureus Isolates Associated with Sternal Bursitis in Chickens: Antimicrobial Resistance, Virulence, Plasmids, and Biofilm Formation. Pathogens 2024; 13:519. [PMID: 38921816 PMCID: PMC11206601 DOI: 10.3390/pathogens13060519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/09/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024] Open
Abstract
Sternal bursitis, a common inflammatory condition in poultry, poses significant challenges to both animal welfare and public health. This study aimed to investigate the prevalence, antimicrobial resistance, and genetic characteristics of Staphylococcus aureus isolates associated with sternal bursitis in chickens. Ninety-eight samples were collected from affected chickens, and 24 S. aureus isolates were identified. Antimicrobial susceptibility testing revealed resistance to multiple agents, with a notable prevalence of aminoglycoside resistance genes. Whole genome sequencing elucidated the genetic diversity and virulence profiles of the isolates, highlighting the predominance of clonal complex 5 (CC5) strains. Additionally, biofilm formation assays demonstrated moderate biofilm production capacity among the isolates. These findings underscore the importance of vigilant monitoring and targeted interventions to mitigate the impact of sternal bursitis in poultry production systems.
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Affiliation(s)
- Vanessa Silva
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Jessica Ribeiro
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Pedro Teixeira
- National Reference Laboratory of Antibiotic Resistances and Healthcare Associated Infections, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
| | - Pedro Pinto
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Madalena Vieira-Pinto
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 5000-801 Vila Real, Portugal
- CECAV—Veterinary and Animal Research Centre, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Patrícia Poeta
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 5000-801 Vila Real, Portugal
- CECAV—Veterinary and Animal Research Centre, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Manuela Caniça
- National Reference Laboratory of Antibiotic Resistances and Healthcare Associated Infections, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 5000-801 Vila Real, Portugal
- Centre for the Studies of Animal Science, Institute of Agrarian and Agri-Food Sciences and Technologies, University of Porto, 4051-401 Porto, Portugal
| | - Gilberto Igrejas
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
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5
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Duarte FC, Olak APS, Cardim SL, Danelli T, Magalhães GLG, Oliveira DMLD, Pimenta JDS, Vespero EC, Yamada-Ogatta SF, Perugini MRE. Phenotypic and genotypic characteristics of mecA - positive oxacillin-sensitive Staphylococcus aureus isolated from patients with bloodstream infection in a tertiary hospital in Southern Brazil. Braz J Microbiol 2024:10.1007/s42770-024-01420-z. [PMID: 38896343 DOI: 10.1007/s42770-024-01420-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
Staphylococcus aureus are extremely important microorganisms, either from an epidemiological point of view or as a pathogen, responsible for causing a series of infectious processes, whether simple, restricted to the skin, or invasive infections such as bacteremia. The emergence of Oxacillin Sensitive-Methicillin Resistant S.aureus (OS-MRSA) isolates has imposed difficulties in the treatment of patients with staphylococcal infection, as such isolates can be mistakenly classified as sensitive and lead to failure of the therapy used. Thus, the objective of this study is to evaluate the prevalence, and genotypic and phenotypic characteristics, of OS-MRSA isolates, from bloodstream infections, collected from patients admitted to a hospital in southern Brazil, as well as to evaluate the treatment used. For this, 801 unique isolates of S. aureus, collected from blood cultures, between January 2011 and December 2020 were evaluated. Of these, 96 isolates were classified as sensitive to oxacillin. The isolates were identified and had their sensitivity profile performed by manual and automated methods. The minimum inhibitory concentration for vancomycin, daptomycin, oxacillin, linezolid and teicoplanine was performed by e-test. The mecA, vanA genes, typing of the SCCmec elements, as well as the search for the icaA, tst-1 and pvl virulence genes were performed by PCR. Biofilm formation was performed using the crystal violet technique. The Sequence Type (ST), as well as the Clonal Complex (CC) of the isolates was evaluated by the RTq -PCR. The clinical characteristics of the patients were evaluated through an active search in medical records. After investigating the mecA gene, 27.1% (26/96) of the isolates were considered OS-MRSA, with SCCmec type I being the most prevalent, 46.1% (12/26). Among the evaluated isolates, 41% (9/22) were included in CC5 and ST9. As for virulence, all isolates were positive for the icaA gene and characterized as strong biofilm formers. The pvl gene was found in 92.3% (24/26) of the isolates and the toxic shock syndrome toxin was present in 61.5% of the isolates (16/26). All isolates were negative for the presence of the van A gene. As for the clinical outcome, 73% (19/26) of the patients were discharged from the hospital and 27% (7/26) died. It was possible to observe a high frequency of OS-MRSA isolates causing bloodstream infections. Furthermore, such isolates contain several virulence genes, which may contribute to a worse clinical outcome.
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Affiliation(s)
- Felipe Crepaldi Duarte
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil.
| | - Anna Paula Silva Olak
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
| | - Stefani Lino Cardim
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
| | - Tiago Danelli
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
| | - Gerusa Luciana Gomes Magalhães
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
- Laboratório de Análises Clínicas do Hospital Universitário, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Deisy Mara Lima de Oliveira
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
| | - Julia da Silva Pimenta
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
| | - Eliana Carolina Vespero
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
- Laboratório de Análises Clínicas do Hospital Universitário, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos,Departamento de Microbiologia,Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marcia Regina Eches Perugini
- Departamento de Patologia,Análises Clínicas e Toxicológicas,Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial,, Universidade Estadual de Londrina,, Londrina, Paraná, Brazil
- Laboratório de Análises Clínicas do Hospital Universitário, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
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Roque-Borda CA, Primo LMDG, Franzyk H, Hansen PR, Pavan FR. Recent advances in the development of antimicrobial peptides against ESKAPE pathogens. Heliyon 2024; 10:e31958. [PMID: 38868046 PMCID: PMC11167364 DOI: 10.1016/j.heliyon.2024.e31958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/14/2024] Open
Abstract
Multi-drug resistant ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) are a global health threat. The severity of the problem lies in its impact on mortality, therapeutic limitations, the threat to public health, and the costs associated with managing infections caused by these resistant strains. Effectively addressing this challenge requires innovative approaches to research, the development of new antimicrobials, and more responsible antibiotic use practices globally. Antimicrobial peptides (AMPs) are a part of the innate immune system of all higher organisms. They are short, cationic and amphipathic molecules with broad-spectrum activity. AMPs interact with the negatively charged bacterial membrane. In recent years, AMPs have attracted considerable interest as potential antibiotics. However, AMPs have low bioavailability and short half-lives, which may be circumvented by chemical modification. This review presents recent in vitro and in silico strategies for the modification of AMPs to improve their stability and application in preclinical experiments.
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Affiliation(s)
- Cesar Augusto Roque-Borda
- São Paulo State University (UNESP), Tuberculosis Research Laboratory, School of Pharmaceutical Sciences, Araraquara, Brazil
- Universidad Católica de Santa María, Vicerrectorado de Investigación, Arequipa, Peru
| | | | - Henrik Franzyk
- University of Copenhagen, Faculty of Health and Medical Sciences, Department of Drug Design and Pharmacology, Denmark
| | - Paul Robert Hansen
- University of Copenhagen, Faculty of Health and Medical Sciences, Department of Drug Design and Pharmacology, Denmark
| | - Fernando Rogério Pavan
- São Paulo State University (UNESP), Tuberculosis Research Laboratory, School of Pharmaceutical Sciences, Araraquara, Brazil
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7
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Kuang SF, Xiang J, Zeng YY, Peng XX, Li H. Elevated Membrane Potential as a Tetracycline Resistance Mechanism in Escherichia coli. ACS Infect Dis 2024; 10:2196-2211. [PMID: 38836553 DOI: 10.1021/acsinfecdis.4c00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The metabolic environment is responsible for antibiotic resistance, which highlights the way in which the antibiotic resistance mechanism works. Here, GC-MS-based metabolomics with iTRAQ-based proteomics was used to characterize a metabolic state in tetracycline-resistant Escherichia coli K12 (E. coli-RTET) compared with tetracycline-sensitive E. coli K12. The repressed pyruvate cycle against the elevation of the proton motive force (PMF) and ATP constructed the most characteristic feature as a consequence of tetracycline resistance. To understand the role of the elevated PMF in tetracycline resistance, PMF inhibitor carbonyl cyanide 3-chlorophenylhydrazone (CCCP) and the pH gradient were used to investigate how the elevation influences bacterial viability and intracellular antibiotic concentration. A strong synergy was detected between CCCP and tetracycline to the viability, which was consistent with increasing intracellular drug and decreasing external pH. Furthermore, E. coli-RTET and E. coli-RGEN with high and low PMF concentrations were susceptible to gentamicin and tetracycline, respectively. The elevated PMF in E. coli-RTET was attributed to the activation of other metabolic pathways, except for the pyruvate cycle, including a malate-oxaloacetate-phosphoenolpyruvate-pyruvate-malate cycle. These results not only revealed a PMF-dependent mechanism for tetracycline resistance but also provided a solution to tetracycline-resistant pathogens by aminoglycosides and aminoglycoside-resistant bacteria by tetracyclines.
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Affiliation(s)
- Su-Fang Kuang
- State Key Laboratory of Bio-Control, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510275, China
| | - Jiao Xiang
- State Key Laboratory of Bio-Control, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510275, China
| | - Ying-Yue Zeng
- State Key Laboratory of Bio-Control, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510275, China
| | - Xuan-Xian Peng
- State Key Laboratory of Bio-Control, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510275, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Hui Li
- State Key Laboratory of Bio-Control, School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510275, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
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8
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Guo Z, Xu X, Zhang G, Wang X, Tian X, Li Y, Li Q, Chen D, Luo Z. The effects of delayed appropriate antimicrobial therapy on children with Staphylococcus aureus blood infection. Eur J Pediatr 2024:10.1007/s00431-024-05624-1. [PMID: 38874791 DOI: 10.1007/s00431-024-05624-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/15/2024]
Abstract
Early appropriate antimicrobial therapy plays a critical role for patients with Staphylococcus aureus bloodstream infection (SAB). We aim to determine the optimal time-window for appropriate antimicrobial therapy and evaluate the effects of delayed therapy on adverse clinical outcomes (in-hospital mortality, sepsis, and septic shock) in children with SAB by propensity score matching (PSM) analysis. Receiver-operating characteristic was used to determine the cut-off point of the time to appropriate therapy (TTAT), the patients were divided into timely and delayed appropriate antimicrobial therapy (delayed therapy) groups accordingly. The PSM was used to balance the characteristics between the two groups, controlling the effects of potential confounders. Kaplan-Meier methods and Cox proportional hazards regression were applied to the matched groups to analyze the association between delayed therapy and clinical outcomes. Inverse probability of treatment weighting and propensity score covariate adjustment were also performed to investigate the sensitivity of the results under different propensity score-based approaches. In total, 247 patients were included in this study. The optimal cut-off point of TTAT was identified as 6.4 h, with 85.0% sensitivity and 69.2% specificity (AUC 0.803, 95% confidence interval 0.702-0.904). Eighty-seven (35.22%) of the 247 patients who received delayed therapy (TTAT ≥ 6.4 h) had higher in-hospital mortality (19.54% vs 1.88%, p < 0.001), higher incidences of sepsis (44.83% vs 15.00%, p < 0.001) and septic shock (32.18% vs 6.25%, p < 0.001) when compared to timely therapy (TTAT < 6.4 h) patients. After PSM analysis, a total of 134 episodes (67 in each of the two matched groups) were further analyzed. No statistically significant difference was observed in in-hospital mortality between delayed and timely -therapy groups (log-rank test, P = 0.157). Patients with delayed therapy had a higher incidence of sepsis or septic shock than those with timely therapy (log-rank test, P = 0.009; P = 0.018, respectively). Compared to the timely-therapy group, the hazard ratio and 95% confidence interval in delayed-therapy group were 2.512 (1.227-5.144, P = 0.012) for sepsis, 3.109 (1.166-8.290, P = 0.023) for septic shock. Conclusion: Appropriate therapy delayed 6.4 h may increase the incidence of sepsis and septic shock, with similar in-hospital mortality in patients with SAB. What is Known: • Staphylococcus aureus (S. aureus) is a major cause of bloodstream infections in children. Undoubtedly, early antimicrobial application plays a critical role in the treatment of children with Staphylococcus aureus bloodstream infections (SAB). • However, rapid, and aggressive administration of antimicrobials may lead to the overuse of these drugs and the emergence of multidrug-resistant microorganisms. Therefore, it is crucial to determine the optimal time-window for appropriate antimicrobial administration in children with SAB. Unfortunately, the optimal time-window for appropriate antimicrobial administration in children with SAB remains unclear. What is New: • Determining the optimal time-window for appropriate antimicrobial administration in patients with matched data variables is particularly important. The Propensity score matching (PSM) analysis effectively controls for confounding factors to a considerable extent when assessing the impact of treatment, thereby approximating the effects observed in randomized controlled trials. • To our knowledge, this is the first study using PSM method to assess the effects of delayed appropriate antimicrobial therapy on adverse outcomes in children with SAB. In low-risk populations with SAB, a delay of 6.4 h in appropriate therapy might increase the occurrence rate for sepsis and septic shock; however, no correlation has been found between this delay and an increased risk for hospital mortality.
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Affiliation(s)
- Ziyao Guo
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ximing Xu
- Big Data Center for Children's Medical Care, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Guangli Zhang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Respiratory Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing, China
| | - Xingmei Wang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoyin Tian
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Respiratory Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing, China
| | - Yuanyuan Li
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Respiratory Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing, China
| | - Qinyuan Li
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Respiratory Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing, China
| | - Dapeng Chen
- Department of Clinical Laboratory Center, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Zhengxiu Luo
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Department of Respiratory Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing, China.
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9
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Alves J, Vrieling M, Ring N, Yebra G, Pickering A, Prajsnar TK, Renshaw SA, Fitzgerald JR. Experimental evolution of Staphylococcus aureus in macrophages: dissection of a conditional adaptive trait promoting intracellular survival. mBio 2024; 15:e0034624. [PMID: 38682911 DOI: 10.1128/mbio.00346-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/26/2024] [Indexed: 05/01/2024] Open
Abstract
Staphylococcus aureus is a major pathogen associated with important diseases in humans and animals. Macrophages are a key component of the innate immune response to S. aureus infection and play a major role in disease outcomes. To investigate the adaptive evolution of S. aureus in response to macrophages, we developed an experimental infection assay. S. aureus strains representing major human epidemic clones were passaged many times in a macrophage cell line, accumulating mutations in an array of genomic loci. Phenotypic analysis revealed the emergence of a lineage exhibiting increased survival in macrophages and human blood, and resistance to vancomycin. The evolved lineage exhibited a previously undescribed small colony variant (SCV) phenotype characterized by hyper-pigmentation, which resulted from a missense mutation in rsbW. Notably, the novel SCV was a conditional adaptive trait that was unstable in nutrient-replete conditions in vitro, rapidly converting from hyper-pigmented SCV to a non-pigmented large colony variant via spontaneous sigB deletion events. Importantly, we identified similar deletions in the genome sequences of a limited number of clinical S. aureus isolates from public databases, indicating that related events may occur during clinical infection. Experimental infection of zebrafish did not reveal a difference in virulence between parent and novel SCV but demonstrated an in vivo fitness cost for the compensatory sigB deletion events. Taken together, we report an experimental evolutionary approach for investigating bacterial innate immune cell interactions, revealing a conditional adaptation that promotes S. aureus survival in macrophages and resistance to vancomycin. IMPORTANCE Staphylococcus aureus is an important human bacterial pathogen. The host response to S. aureus involves the production of innate immune cells such as macrophages which are important for fighting infection. Here we report a new model of experimental evolution for studying how S. aureus can evade killing by macrophages. We identified a novel adaptive phenotype that promotes survival in macrophages and blood and resistance to antibiotics. The phenotype is lost rapidly upon growth in nutrient-rich conditions via disruption of the alternative sigma factor sigB, revealing a conditional niche-specific fitness advantage. Genomic analysis of clinical isolates suggests similar adaptations may occur during human infections. Our model may be used broadly to identify adaptations of S. aureus to the innate immune response.
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Affiliation(s)
- Joana Alves
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
| | - Manouk Vrieling
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
| | - Natalie Ring
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
| | - Gonzalo Yebra
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
| | - Amy Pickering
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
| | - Tomasz K Prajsnar
- Florey Institute, Bateson Centre and Division of Clinical Medicine, School of Medicine and Population Health, Sheffield, United Kingdom
| | - Stephen A Renshaw
- Florey Institute, Bateson Centre and Division of Clinical Medicine, School of Medicine and Population Health, Sheffield, United Kingdom
| | - J Ross Fitzgerald
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Edinburgh, United Kingdom
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10
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Soliman AM, Ghorab WM, Ghorab MM, ElKenawy NM, El-Sabbagh WA, Ramadan LA. Novel quinazoline sulfonamide-based scaffolds modulate methicillin-resistant Staphylococcus aureus (MRSA) pneumonia in immunodeficient irradiated model: Regulatory role of TGF-β. Bioorg Chem 2024; 150:107559. [PMID: 38905889 DOI: 10.1016/j.bioorg.2024.107559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 06/23/2024]
Abstract
A library of new quinazoline pharmacophores bearing benzenesulfonamide moiety was designed and synthesized. Compounds 3a-n were screened for their in vitro antimicrobial activity against eight multidrug-resistant clinical isolates. Compounds 3d and 3n exhibited prominent antibacterial activity, specifically against MRSA. After exhibiting relative in vitro and in vivo safety, compound 3n was selected to assess its anti-inflammatory activity displaying promising COX-2 inhibitory activity compared to Ibuprofen. In vivo experimental MRSA pneumonia model was conducted on immunodeficient (irradiated) mice to reveal the antimicrobial and anti-inflammatory responses of compound 3n compared to azithromycin (AZ). Treatment with compound 3n (10 and 20 mg/kg) as well as AZ resulted in a significant decrease in bacterial counts in lung tissues, suppression of serum C-reactive protein (CRP), lung interleukin-6 (IL-6), myeloperoxidase activity (MPO) and transforming growth factor-β (TGF-β). Compound 3n showed a non-significant deviation of lung TGF-β1 from normal values which in turn controlled the lung inflammatory status and impacted the histopathological results. Molecular docking of 3n showed promising interactions inside the active sites of TGF-β and COX-2. Our findings present a new dual-target quinazoline benzenesulfonamide derivative 3n, which possesses significant potential for treating MRSA-induced pneumonia in an immunocompromised state.
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Affiliation(s)
- Aiten M Soliman
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
| | - Walid M Ghorab
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
| | - Mostafa M Ghorab
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt.
| | - Nora M ElKenawy
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
| | - Walaa A El-Sabbagh
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
| | - Laila A Ramadan
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt; Pharmacology & Toxicology Department, Faculty of Pharmacy, Egyptian Russian University, Egypt
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11
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Hong Y, Chen Y, Zhang J, Zhang H, Wang Z, Zhao F, Sun L, Chen M, Zhu F, Zhuang H, Jiang S, Yu Y, Chen Y. Identification of the novel fosfomycin resistance gene fosSC in Staphylococcus capitis. Int J Antimicrob Agents 2024; 63:107162. [PMID: 38561093 DOI: 10.1016/j.ijantimicag.2024.107162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/20/2024] [Accepted: 03/23/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES Fosfomycin has regained attention for treating infections caused by methicillin-resistant Staphylococcus aureus and multidrug-resistant coagulase-negative staphylococci. In this research, our objective was to investigate the mechanisms underlying fosfomycin resistance in Staphylococcus capitis. METHODS The minimum inhibitory concentrations (MICs) of fosfomycin were assessed in 109 clinical S. capitis isolates by the agar dilution method. By cloning the fos-like genes into the shuttle vector, pTSSCm-Pcap, and observing the change in fosfomycin MICs, the gene function was verified. Core genome multilocus sequence typing and comparative genomics analysis were conducted to determine the population characteristics of S. capitis isolates and analyse the genetic environment of the fos-like genes. RESULTS We identified a novel fosfomycin resistance gene, fosSC, on the chromosome in 58 out of 109 (53.2%) S. capitis isolates. The deduced products of the fosSC genes shared 67.15-67.88% amino acid sequence identity with FosB. The RN-pT-fosSC transformants carrying fosSC showed a 512-fold increase in the fosfomycin MICs. The fosSC gene was embedded in a conserved genetic context, but IS431mec was located to the left of the fosSC gene in cluster L due to the insertion of staphylococcal cassette chromosome mec. CONCLUSIONS The chromosomal fosSC genes in some lineages of S. capitis explained their high-level fosfomycin resistance. Ongoing surveillance is crucial for monitoring the potential threat of horizontal transfer, which could be facilitated by the presence of mobile genetic elements surrounding the fosSC gene.
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Affiliation(s)
- Yueqin Hong
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yiyi Chen
- Center for General Practice Medicine, Department of Infectious Diseases, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Junxiong Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Xihu District Center for Disease Control and Prevention of Hangzhou, Hangzhou, China
| | - Hao Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhengan Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feng Zhao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang Province, China
| | - Lu Sun
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengzhen Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feiteng Zhu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hemu Zhuang
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shengnan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Yan Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, China; Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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12
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Vo T, Pontarotti P, Rolain JM, Merhej V. Mechanisms of acquisition of the vanA operon among vancomycin-resistant Staphylococcus aureus genomes: The tip of the iceberg? Int J Antimicrob Agents 2024; 63:107154. [PMID: 38599552 DOI: 10.1016/j.ijantimicag.2024.107154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/26/2024] [Accepted: 03/19/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Vancomycin is frequently used as a last line of defence against infections due to multidrug-resistant Staphylococcus aureus (S. aureus). A recent finding described the acquisition of vancomycin-resistant S. aureus strains by the integration of an enterococcal plasmid containing the vanA operon into the S. aureus chromosome via homologous recombination involving a specific integration site called locus L2. METHODS To characterise all mechanisms of acquisition of vanA, this study analysed the 15 706 S. aureus genomes to look for vanA and described its genetic environment. RESULTS A complete vanA operon was found in 25 S. aureus strains isolated from 12 patients, including nine co-isolated with vancomycin-resistant Enterococcus strains. VanA was found within transposon Tn1546-like elements on 17 plasmids and eight chromosomes. VanA might be acquired through conjugation of enterococcal and staphylococcal plasmids, transposition of Tn1546 carrying vanA and plasmid integration into the chromosome. Further, L2 was detected in 2087 genomes (13.3%) of S. aureus strains across different continents. Six potential chromosomal hotspots for integration of the entire vanA-containing enterococcal plasmid were identified by homologous recombination via L2. CONCLUSIONS These findings suggest that the recently described scenario in a New York patient could be reproduced anywhere. Surveillance of this possibility is mandatory, especially in patients with vancomycin-resistant Enterococcus infection or colonisation.
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Affiliation(s)
- Tram Vo
- Aix Marseille University, MEPHI, Marseille, France; Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, Marseille, France
| | - Pierre Pontarotti
- Aix Marseille University, MEPHI, Marseille, France; Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, Marseille, France; Centre National de la Recherche Scientifique (CNRS)-SNC5039, Marseille, France
| | - Jean-Marc Rolain
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, Marseille, France; Aix Marseille University, APHM, MEPHI, Marseille, France
| | - Vicky Merhej
- Aix Marseille University, MEPHI, Marseille, France; Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, Marseille, France.
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13
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Ibrahim DD, Enem SI, Egwu G, Dantong D, Jolayemi KO, Gaddafi MS. An emerging zoonosis: molecular detection of multidrug-methicillin resistant Staphylococcus aureus from butchers' knives, livestock products and contact surfaces. Vet Res Commun 2024; 48:1697-1705. [PMID: 38519756 DOI: 10.1007/s11259-024-10346-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/02/2024] [Indexed: 03/25/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) transmission in livestock, community, and healthcare settings poses a significant public health concern both locally and globally. This study aimed to investigate the occurrence, molecular detection, and antibiogram of the MRSA strain in fresh beef, contact surfaces, and butchers' knives from the four major abattoirs (Karu, Gwagwalada, Deidei, and Kubwa) located in the Federal Capital Territory, Nigeria. A multi-stage sampling technique was used to collect 400 swab samples from butchers' knives (132), fresh beef (136), and contact surfaces (132). Presumptive colonies on mannitol salt agar were subjected to culture, isolation, and biotyping. The antibiogram was carried out via a Kirby-Bauer disk containing eight antibiotics. MRSA was phenotypically confirmed by oxacillin-resistant screening agar base (ORSAB) and genotypically by PCR to detect the presence of the mecA gene. Out of the 400 samples, 47.24% of fresh beef, 37% of contact surfaces, and 64.33% of butchers' knife swabs were Staphylococcus aureus positive. Thirty-two Staphylococcus aureus-positive isolates were confirmed to be MRSA, 50% fresh beef, 28.12% contact surfaces, and 21.87% butcher's knife swabs. MRSA isolates displayed multidrug-resistant traits, with a high resistance of 90.62% against cloxacillin, and a highest susceptibility of 100% to co-trimaxole. The antibiogram showed MRSA strains to be multidrug resistant. Molecular characterisation of the MRSA detected the presence of the mecA gene at a band size of 163 bp in all isolates. Strict hygiene of butchers, and working equipment in meat processing and marketing should be of top priority.
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Affiliation(s)
- Dauda Dauda Ibrahim
- Department of Veterinary Public Health and Preventive Medicine, University of Abuja, Abuja, Nigeria.
| | - Simon Ikechukwu Enem
- Department of Veterinary Public Health and Preventive Medicine, University of Abuja, Abuja, Nigeria
| | - Godwin Egwu
- Department of Veterinary Medicine, University of Abuja, Abuja, Nigeria
| | - David Dantong
- Department of Veterinary Public Health and Preventive Medicine Laboratory, University of Abuja, Abuja, Nigeria
| | | | - Mohammed Sani Gaddafi
- Department of Public Health, Ministry of Animal Health, Husbandry and Fisheries, Kebbi, Nigeria
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14
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Vadakkan K, Sathishkumar K, Kuttiyachan Urumbil S, Ponnenkunnathu Govindankutty S, Kumar Ngangbam A, Devi Nongmaithem B. A review of chemical signaling mechanisms underlying quorum sensing and its inhibition in Staphylococcus aureus. Bioorg Chem 2024; 148:107465. [PMID: 38761705 DOI: 10.1016/j.bioorg.2024.107465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/29/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
Staphylococcus aureus is a significant bacterium responsible for multiple infections and is a primary cause of fatalities among patients in hospital environments. The advent of pathogenic bacteria such as methicillin-resistant S. aureus revealed the shortcomings of employing antibiotics to treat bacterial infectious diseases. Quorum sensing enhances S. aureus's survivability through signaling processes. Targeting the key components of quorum sensing has drawn much interest nowadays as a promising strategy for combating infections caused by bacteria. Concentrating on the accessory gene regulator quorum-sensing mechanism is the most commonly suggested anti-virulence approach for S.aureus. Quorum quenching is a common strategy for controlling illnesses triggered by microorganisms since it reduces the pathogenicity of bacteria and improves bacterial biofilm susceptibility to antibiotics, thus providing an intriguing prospect for drug discovery. Quorum sensing inhibition reduces selective stresses and constrains the emergence of antibiotic resistance while limiting bacterial pathogenicity. This review examines the quorum sensing mechanisms involved in S. aureus, quorum sensing targets and gene regulation, environmental factors affecting quorum sensing, quorum sensing inhibition, natural products as quorum sensing inhibitory agents and novel therapeutical strategies to target quorum sensing in S. aureus as drug developing technique to augment conventional antibiotic approaches.
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Affiliation(s)
- Kayeen Vadakkan
- Department of Biotechnology, St. Mary's College (Autonomous), Thrissur, Kerala 680020, India; Manipur International University, Imphal, Manipur 795140, India.
| | - Kuppusamy Sathishkumar
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Thandalam, Chennai, Tamil Nadu 602105, India
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15
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Bashabsheh RHF, Al-Fawares O, Natsheh I, Bdeir R, Al-Khreshieh RO, Bashabsheh HHF. Staphylococcus aureus epidemiology, pathophysiology, clinical manifestations and application of nano-therapeutics as a promising approach to combat methicillin resistant Staphylococcus aureus. Pathog Glob Health 2024; 118:209-231. [PMID: 38006316 DOI: 10.1080/20477724.2023.2285187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2023] Open
Abstract
Staphylococcus aureus is a Gram-positive bacterium and one of the most prevalent infectious disease-related causes of morbidity and mortality in adults. This pathogen can trigger a broad spectrum of diseases, from sepsis and pneumonia to severe skin infections that can be fatal. In this review, we will provide an overview of S. aureus and discuss the extensive literature on epidemiology, transmission, genetic diversity, evolution and antibiotic resistance strains, particularly methicillin resistant S. aureus (MRSA). While many different virulence factors that S. aureus produces have been investigated as therapeutic targets, this review examines recent nanotechnology approaches, which employ materials with atomic or molecular dimensions and are being used to diagnose, treat, or eliminate the activity of S. aureus. Finally, having a deeper understanding and clearer grasp of the roles and contributions of S. aureus determinants, antibiotic resistance, and nanotechnology will aid us in developing anti-virulence strategies to combat the growing scarcity of effective antibiotics against S. aureus.
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Affiliation(s)
- Raghad H F Bashabsheh
- Department of Medical Laboratory Analysis, Faculty of Science, Al-Balqa Applied University, Al-salt, Jordan
| | - O'la Al-Fawares
- Department of Medical Laboratory Analysis, Faculty of Science, Al-Balqa Applied University, Al-salt, Jordan
| | - Iyad Natsheh
- Department of Allied Medical Sciences, Zarqa College, Al-Balqa Applied University, Zarqa, Jordan
| | - Roba Bdeir
- Department of Allied Health Sciences, Faculty of Nursing, Al-Balqa Applied University, Al-salt, Jordan
| | - Rozan O Al-Khreshieh
- Department of Medical Laboratory Analysis, Faculty of Science, Al-Balqa Applied University, Al-salt, Jordan
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16
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Gopikrishnan M, Haryini S, C GPD. Emerging strategies and therapeutic innovations for combating drug resistance in Staphylococcus aureus strains: A comprehensive review. J Basic Microbiol 2024; 64:e2300579. [PMID: 38308076 DOI: 10.1002/jobm.202300579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 02/04/2024]
Abstract
In recent years, antibiotic therapy has encountered significant challenges due to the rapid emergence of multidrug resistance among bacteria responsible for life-threatening illnesses, creating uncertainty about the future management of infectious diseases. The escalation of antimicrobial resistance in the post-COVID era compared to the pre-COVID era has raised global concern. The prevalence of nosocomial-related infections, especially outbreaks of drug-resistant strains of Staphylococcus aureus, have been reported worldwide, with India being a notable hotspot for such occurrences. Various virulence factors and mutations characterize nosocomial infections involving S. aureus. The lack of proper alternative treatments leading to increased drug resistance emphasizes the need to investigate and examine recent research to combat future pandemics. In the current genomics era, the application of advanced technologies such as next-generation sequencing (NGS), machine learning (ML), and quantum computing (QC) for genomic analysis and resistance prediction has significantly increased the pace of diagnosing drug-resistant pathogens and insights into genetic intricacies. Despite prompt diagnosis, the elimination of drug-resistant infections remains unattainable in the absence of effective alternative therapies. Researchers are exploring various alternative therapeutic approaches, including phage therapy, antimicrobial peptides, photodynamic therapy, vaccines, host-directed therapies, and more. The proposed review mainly focuses on the resistance journey of S. aureus over the past decade, detailing its resistance mechanisms, prevalence in the subcontinent, innovations in rapid diagnosis of the drug-resistant strains, including the applicants of NGS and ML application along with QC, it helps to design alternative novel therapeutics approaches against S. aureus infection.
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Affiliation(s)
- Mohanraj Gopikrishnan
- Department of Integrative Biology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - Sree Haryini
- Department of Biomedical Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - George Priya Doss C
- Department of Integrative Biology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
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17
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Roa-Tort K, Saavedra Y, Villanueva-Martínez A, Ganem-Rondero A, Pérez-Carranza LA, de la Rosa-Vázquez JM, Ugalde-Femat G, Molina-Alejandre O, Becerril-Osnaya AA, Rivera-Fernández JD. In Vitro Antimicrobial Photodynamic Therapy for Pseudomonas aeruginosa ( P. aeruginosa) and methicillin-resistant Staphylococcus aureus (MRSA) Inhibition Using a Green Light Source. Pharmaceutics 2024; 16:518. [PMID: 38675180 PMCID: PMC11053950 DOI: 10.3390/pharmaceutics16040518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Photodynamic therapy (PDT) has been based on using photosensitizers (PS) and applying light of a specific wavelength. When this technique is used for treating infections, it is known as antimicrobial photodynamic therapy (aPDT). Currently, the use of lighting sources for in vitro studies using aPDT is generally applied in multiwell cell culture plates; however, depending on the lighting arrangement, there are usually errors in the application of the technique because the light from a well can affect the neighboring wells or it may be that not all the wells are used in the same experiment. In addition, one must be awarded high irradiance values, which can cause unwanted photothermal problems in the studies. Thus, this manuscript presents an in vitro antimicrobial photodynamic therapy for a Pseudomonas aeruginosa (P. aeruginosa) and methicillin-resistant Staphylococcus aureus (MRSA) inhibition study using an arrangement of thermally isolated and independently illuminated green light source systems for eight tubes in vitro aPDT, determining the effect of the following factors: (i) irradiance level, (ii) exposure time, and (iii) Rose Bengal (RB) concentration (used as a PS), registering the Pseudomonas aeruginosa (P. aeruginosa) and methicillin-resistant Staphylococcus aureus (MRSA) inhibition rates. The results show that in the dark, RB had a poor antimicrobial rate for P. aeruginosa, finding the maximum inhibition (2.7%) at 30 min with an RB concentration of 3 µg/mL. However, by applying light in a correct dosage (time × irradiance) and the adequate RB concentration, the inhibition rate increased by over 37%. In the case of MRSA, there was no significant inhibition with RB in complete darkness and, in contrast, the rate was 100% for those experiments that were irradiated.
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Affiliation(s)
- Karen Roa-Tort
- Laboratorio de Optomecatrónica, UPIIH, Instituto Politécnico Nacional, Distrito de Educación, Salud, Ciencia, Tecnología e Innovación, San Agustín Tlaxiaca 42162, Mexico;
| | - Yael Saavedra
- Laboratorio de Biofotónica, ESIME ZAC, Instituto Politécnico Nacional, Gustavo A. Madero, Ciudad de México 07738, Mexico; (Y.S.); (J.M.d.l.R.-V.); (G.U.-F.)
| | - Angélica Villanueva-Martínez
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica (L-322), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (A.V.-M.); (A.G.-R.); (O.M.-A.)
| | - Adriana Ganem-Rondero
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica (L-322), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (A.V.-M.); (A.G.-R.); (O.M.-A.)
| | - Laura Abril Pérez-Carranza
- Laboratorio de Bacteriología Diagnóstica de la Sección de Ciencias de la Salud Humana (anexo al L-513, Campo1), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico;
| | - José M. de la Rosa-Vázquez
- Laboratorio de Biofotónica, ESIME ZAC, Instituto Politécnico Nacional, Gustavo A. Madero, Ciudad de México 07738, Mexico; (Y.S.); (J.M.d.l.R.-V.); (G.U.-F.)
| | - Gabriel Ugalde-Femat
- Laboratorio de Biofotónica, ESIME ZAC, Instituto Politécnico Nacional, Gustavo A. Madero, Ciudad de México 07738, Mexico; (Y.S.); (J.M.d.l.R.-V.); (G.U.-F.)
| | - Omar Molina-Alejandre
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica (L-322), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico; (A.V.-M.); (A.G.-R.); (O.M.-A.)
| | - Andrea Angela Becerril-Osnaya
- Laboratorio de Bacteriología Diagnóstica de la Sección de Ciencias de la Salud Humana (anexo al L-513, Campo1), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54740, Mexico;
| | - Josué D. Rivera-Fernández
- Laboratorio de Optomecatrónica, UPIIH, Instituto Politécnico Nacional, Distrito de Educación, Salud, Ciencia, Tecnología e Innovación, San Agustín Tlaxiaca 42162, Mexico;
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18
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Shi Y, Muenzner P, Schanz-Jurinka S, Hauck CR. The phosphatidylinositol-5' phosphatase synaptojanin1 limits integrin-mediated invasion of Staphylococcus aureus. Microbiol Spectr 2024; 12:e0200623. [PMID: 38358281 PMCID: PMC10986543 DOI: 10.1128/spectrum.02006-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 01/18/2024] [Indexed: 02/16/2024] Open
Abstract
The gram-positive bacterium Staphylococcus aureus can invade non-professional phagocytic cells by associating with the plasma protein fibronectin to exploit host cell integrins. Integrin-mediated internalization of these pathogens is facilitated by the local production of phosphatidylinositol-4,5-bisphosphate (PI-4,5-P2) via an integrin-associated isoform of phosphatidylinositol-5' kinase. In this study, we addressed the role of PI-4,5-P2-directed phosphatases on internalization of S. aureus. ShRNA-mediated knockdown of individual phosphoinositide 5-phosphatases revealed that synaptojanin1 (SYNJ1) is counteracting invasion of S. aureus into mammalian cells. Indeed, shRNA-mediated depletion as well as genetic deletion of synaptojanin1 via CRISPR/Cas9 resulted in a gain-of-function phenotype with regard to integrin-mediated uptake. Surprisingly, the surface level of integrins was slightly downregulated in Synj1-KO cells. Nevertheless, these cells showed enhanced local accumulation of PI-4,5-P2 and exhibited increased internalization of S. aureus. While the phosphorylation level of the integrin-associated protein tyrosine kinase FAK was unaltered, the integrin-binding and -activating protein talin was enriched in the vicinity of S. aureus in synaptojanin1 knockout cells. Scanning electron microscopy revealed enlarged membrane invaginations in the absence of synaptojanin1 explaining the increased capability of these cells to internalize integrin-bound microorganisms. Importantly, the enhanced uptake by Synj1-KO cells and the exaggerated morphological features were rescued by the re-expression of the wild-type enzyme but not phosphatase inactive mutants. Accordingly, synaptojanin1 activity limits integrin-mediated invasion of S. aureus, corroborating the important role of PI-4,5-P2 during this process.IMPORTANCEStaphylococcus aureus, an important bacterial pathogen, can invade non-professional phagocytes by capturing host fibronectin and engaging integrin α5β1. Understanding how S. aureus exploits this cell adhesion receptor for efficient cell entry can also shed light on the physiological regulation of integrins by endocytosis. Previous studies have found that a specific membrane lipid, phosphatidylinositol-4,5-bisphosphate (PIP2), supports the internalization process. Here, we extend these findings and report that the local levels of PIP2 are controlled by the activity of the PIP2-directed lipid phosphatase Synaptojanin1. By dephosphorylating PIP2 at bacteria-host cell attachment sites, Synaptojanin1 counteracts the integrin-mediated uptake of the microorganisms. Therefore, our study not only generates new insight into subversion of cellular receptors by pathogenic bacteria but also highlights the role of host cell proteins acting as restriction factors for bacterial invasion at the plasma membrane.
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Affiliation(s)
- Yong Shi
- Lehrstuhl für Zellbiologie, Universität Konstanz, Konstanz, Germany
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Petra Muenzner
- Lehrstuhl für Zellbiologie, Universität Konstanz, Konstanz, Germany
| | | | - Christof R. Hauck
- Lehrstuhl für Zellbiologie, Universität Konstanz, Konstanz, Germany
- Konstanz Research School Chemical Biology, Universität Konstanz, Konstanz, Germany
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Li R, Gao H, Zhang R, Zhang B, Wang X, Zhang X, Li R. Biocompatible formulation of a hydrophobic antimicrobial peptide L30 through nanotechnology principles and its potential role in mouse pneumonia model infected with Staphylococcus aureus. Colloids Surf B Biointerfaces 2024; 236:113823. [PMID: 38442502 DOI: 10.1016/j.colsurfb.2024.113823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/07/2024]
Abstract
Hydrophobic antimicrobial peptide L30, a potential antibiotic candidate, has poor water solubility and hemolytic activity. Herein, a biocompatible nano-formulation composed of liposomes and dendritic mesoporous silica encapsulation (LDMSNs@L30) was constructed for L30 to solve the limits for its clinical development. The characterization, antimicrobial activity and therapeutic effect of LDMSNs@L30 on Staphylococcus aureus 9 (cfr+) infected mice models were investigated. LDMSNs@L30 displayed a smooth, spherical, and monodisperse nanoparticle with a hydrodynamic diameter of 177.40 nm, an encapsulation rate of 56.13%, a loading efficiency of 32.26%, a release rate of 66.5%, and effective slow-release of L30. Compared with free L30, the formulation could significantly increase the solubility of L30 in PBS with the maximum concentration from 8 μg/mL to 2.25 mg/mL and decrease the hemolytic activity of hydrophobic peptide L30 with the HC5 from 65.36 μg/mL to more than 500 μg/mL. The nano delivery system LDMSNs@L30 also exhibited higher therapeutic effects on mice models infected with S. aureus 9 (cfr+) than those of free L30 after 7 days of treatment by reducing the lung inflammation and the inflammatory cytokines levels in plasma, showing better health score and pulmonary pathological improvement. Our research suggests that nano-formulation can be expected to be a promising strategy for peptide drugs in therapeutic applications.
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Affiliation(s)
- Ruihua Li
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Huiping Gao
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Ruiling Zhang
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; School of Economics and Trade, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Beibei Zhang
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Xueqin Wang
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Xinhui Zhang
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Ruifang Li
- Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou, Henan University of Technology, Zhengzhou, Henan 450001, PR China; College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China.
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20
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Chakrawarti A, Eckstrom K, Laaguiby P, Barlow JW. Hybrid Illumina-Nanopore assembly improves identification of multilocus sequence types and antimicrobial resistance genes of Staphylococcus aureus isolated from Vermont dairy farms: comparison to Illumina-only and R9.4.1 nanopore-only assemblies. Access Microbiol 2024; 6:000766.v3. [PMID: 38725589 PMCID: PMC11077346 DOI: 10.1099/acmi.0.000766.v3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/23/2024] [Indexed: 05/12/2024] Open
Abstract
Antimicrobial resistance (AMR) in Staphylococcus aureus is a pressing public health challenge with significant implications for the dairy industry, encompassing bovine mastitis concerns and potential zoonotic threats. To delve deeper into the resistance mechanisms of S. aureus, this study employed a hybrid whole genome assembly approach that synergized the precision of Illumina with the continuity of Oxford Nanopore. A total of 62 isolates, collected from multiple sources from Vermont dairy farms, were sequenced using the GridION Oxford Nanopore R9.4.1 platform and the Illumina platform, and subsequently processed through our long-read first bioinformatics pipeline. Our analyses showcased the hybrid-assembled genome's superior completeness compared to Oxford Nanopore (R9.4.1)-only or Illumina-only assembled genomes. Furthermore, the hybrid assembly accurately determined multilocus sequence typing (MLST) strain types across all isolates. The comprehensive probe for antibiotic resistance genes (ARGs) using databases like CARD, Resfinder, and MEGARES 2.0 characterized AMR in S. aureus isolates from Vermont dairy farms, and revealed the presence of notable resistance genes, including beta-lactam genes blaZ, blaI, and blaR. In conclusion, the hybrid assembly approach emerged as a tool for uncovering the genomic nuances of S. aureus isolates collected from multiple sources on dairy farms. Our findings offer a pathway for detecting AMR gene prevalence and shaping AMR management strategies crucial for safeguarding human and animal health.
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Affiliation(s)
- Ashma Chakrawarti
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA
| | - Korin Eckstrom
- Department of Microbiology and Molecular Genetics, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA
| | - Pheobe Laaguiby
- Advanced Genome Technologies Core, Vermont Integrative Genomics Resource, The Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA
| | - John W. Barlow
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA
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Kavaliauskas P, Acevedo W, Garcia A, Naing E, Grybaite B, Sapijanskaite-Banevic B, Grigaleviciute R, Petraitiene R, Mickevicius V, Petraitis V. Exploring the potential of bis(thiazol-5-yl)phenylmethane derivatives as novel candidates against genetically defined multidrug-resistant Staphylococcus aureus. PLoS One 2024; 19:e0300380. [PMID: 38517855 PMCID: PMC10959338 DOI: 10.1371/journal.pone.0300380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 02/26/2024] [Indexed: 03/24/2024] Open
Abstract
Antimicrobial resistance (AMR) represents an alarming global challenge to public health. Infections caused by multidrug-resistant Staphylococcus aureus (S. aureus) pose an emerging global threat. Therefore, it is crucial to develop novel compounds with promising antimicrobial activity against S. aureus especially those with challenging resistance mechanisms and biofilm formation. Series of bis(thiazol-5-yl)phenylmethane derivatives were evaluated against drug-resistant Gram-positive bacteria. The screening revealed an S. aureus-selective mechanism of bis(thiazol-5-yl)phenylmethane derivatives (MIC 2-64 μg/mL), while significantly lower activity was observed with vancomycin-resistant Enterococcus faecalis (MIC 64 μg/mL) (p<0.05). The most active phenylmethane-based (p-tolyl) derivative, 23a, containing nitro and dimethylamine substituents, and the naphthalene-based derivative, 28b, harboring fluorine and nitro substituents, exhibited strong, near MIC bactericidal activity against S. aureus with genetically defined resistance phenotypes such as MSSA, MRSA, and VRSA and their biofilms. The in silico modeling revealed that most promising compounds 23a and 28b were predicted to bind S. aureus MurC ligase. The 23a and 28b formed bonds with MurC residues at binding site, specifically Ser12 and Arg375, indicating consequential interactions essential for complex stability. The in vitro antimicrobial activity of compound 28b was not affected by the addition of 50% serum. Finally, all tested bis(thiazol-5-yl)phenylmethane derivatives showed favorable cytotoxicity profiles in A549 and THP-1-derived macrophage models. These results demonstrated that bis(thiazol-5-yl)phenylmethane derivatives 23a and 28b could be potentially explored as scaffolds for the development of novel candidates targeting drug-resistant S. aureus. Further studies are also warranted to understand in vivo safety, efficacy, and pharmacological bioavailability of bis(thiazol-5-yl)phenylmethane derivatives.
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Affiliation(s)
- Povilas Kavaliauskas
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, New York, NY, United States of America
- Institute of Infectious Diseases and Pathogenic Microbiology, Prienai, Lithuania
- Biological Research Center, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Organic Chemistry, Kaunas University of Technology, Kaunas, Lithuania
| | - Waldo Acevedo
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Andrew Garcia
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, New York, NY, United States of America
| | - Ethan Naing
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, New York, NY, United States of America
| | - Birute Grybaite
- Department of Organic Chemistry, Kaunas University of Technology, Kaunas, Lithuania
| | | | - Ramune Grigaleviciute
- Biological Research Center, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Animal Nutrition, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Ruta Petraitiene
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, New York, NY, United States of America
- Institute of Infectious Diseases and Pathogenic Microbiology, Prienai, Lithuania
| | - Vytautas Mickevicius
- Department of Organic Chemistry, Kaunas University of Technology, Kaunas, Lithuania
| | - Vidmantas Petraitis
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, New York, NY, United States of America
- Institute of Infectious Diseases and Pathogenic Microbiology, Prienai, Lithuania
- Biological Research Center, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, United States of America
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Hibbert T, Krpetic Z, Latimer J, Leighton H, McHugh R, Pottenger S, Wragg C, James CE. Antimicrobials: An update on new strategies to diversify treatment for bacterial infections. Adv Microb Physiol 2024; 84:135-241. [PMID: 38821632 DOI: 10.1016/bs.ampbs.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2024]
Abstract
Ninety-five years after Fleming's discovery of penicillin, a bounty of antibiotic compounds have been discovered, modified, or synthesised. Diversification of target sites, improved stability and altered activity spectra have enabled continued antibiotic efficacy, but overwhelming reliance and misuse has fuelled the global spread of antimicrobial resistance (AMR). An estimated 1.27 million deaths were attributable to antibiotic resistant bacteria in 2019, representing a major threat to modern medicine. Although antibiotics remain at the heart of strategies for treatment and control of bacterial diseases, the threat of AMR has reached catastrophic proportions urgently calling for fresh innovation. The last decade has been peppered with ground-breaking developments in genome sequencing, high throughput screening technologies and machine learning. These advances have opened new doors for bioprospecting for novel antimicrobials. They have also enabled more thorough exploration of complex and polymicrobial infections and interactions with the healthy microbiome. Using models of infection that more closely resemble the infection state in vivo, we are now beginning to measure the impacts of antimicrobial therapy on host/microbiota/pathogen interactions. However new approaches are needed for developing and standardising appropriate methods to measure efficacy of novel antimicrobial combinations in these contexts. A battery of promising new antimicrobials is now in various stages of development including co-administered inhibitors, phages, nanoparticles, immunotherapy, anti-biofilm and anti-virulence agents. These novel therapeutics need multidisciplinary collaboration and new ways of thinking to bring them into large scale clinical use.
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Affiliation(s)
- Tegan Hibbert
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Zeljka Krpetic
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Joe Latimer
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Hollie Leighton
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Rebecca McHugh
- School of Infection and Immunity, University of Glasgow, Glasgow, UK
| | - Sian Pottenger
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Charlotte Wragg
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Chloë E James
- School of Science, Engineering, and Environment, University of Salford, Salford, UK.
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23
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Song M, Tang Q, Ding Y, Tan P, Zhang Y, Wang T, Zhou C, Xu S, Lyu M, Bai Y, Ma X. Staphylococcus aureus and biofilms: transmission, threats, and promising strategies in animal husbandry. J Anim Sci Biotechnol 2024; 15:44. [PMID: 38475886 DOI: 10.1186/s40104-024-01007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 02/03/2024] [Indexed: 03/14/2024] Open
Abstract
Staphylococcus aureus (S. aureus) is a common pathogenic bacterium in animal husbandry that can cause diseases such as mastitis, skin infections, arthritis, and other ailments. The formation of biofilms threatens and exacerbates S. aureus infection by allowing the bacteria to adhere to pathological areas and livestock product surfaces, thus triggering animal health crises and safety issues with livestock products. To solve this problem, in this review, we provide a brief overview of the harm caused by S. aureus and its biofilms on livestock and animal byproducts (meat and dairy products). We also describe the ways in which S. aureus spreads in animals and the threats it poses to the livestock industry. The processes and molecular mechanisms involved in biofilm formation are then explained. Finally, we discuss strategies for the removal and eradication of S. aureus and biofilms in animal husbandry, including the use of antimicrobial peptides, plant extracts, nanoparticles, phages, and antibodies. These strategies to reduce the spread of S. aureus in animal husbandry help maintain livestock health and improve productivity to ensure the ecologically sustainable development of animal husbandry and the safety of livestock products.
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Affiliation(s)
- Mengda Song
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
- Key Laboratory of Innovative Utilization of Local Cattle and Sheep Germplasm Resources (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Qi Tang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yakun Ding
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Peng Tan
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yucheng Zhang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Tao Wang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Chenlong Zhou
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Shenrui Xu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Mengwei Lyu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yueyu Bai
- Key Laboratory of Innovative Utilization of Local Cattle and Sheep Germplasm Resources (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China.
| | - Xi Ma
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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24
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Cuny C, Layer-Nicolaou F, Werner G, Witte W. A look at staphylococci from the one health perspective. Int J Med Microbiol 2024; 314:151604. [PMID: 38367509 DOI: 10.1016/j.ijmm.2024.151604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/11/2024] [Accepted: 01/15/2024] [Indexed: 02/19/2024] Open
Abstract
Staphylococcus aureus and other staphylococcal species are resident and transient multihost colonizers as well as conditional pathogens. Especially S. aureus represents an excellent model bacterium for the "One Health" concept because of its dynamics at the human-animal interface and versatility with respect to host adaptation. The development of antimicrobial resistance plays another integral part. This overview will focus on studies at the human-animal interface with respect to livestock farming and to companion animals, as well as on staphylococci in wildlife. In this context transmissions of staphylococci and of antimicrobial resistance genes between animals and humans are of particular significance.
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Affiliation(s)
- Christiane Cuny
- Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, National Reference Centre for Staphylococci and Enterococci, Wernigerode Branch, 38855 Wernigerode, Germany.
| | - Franziska Layer-Nicolaou
- Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, National Reference Centre for Staphylococci and Enterococci, Wernigerode Branch, 38855 Wernigerode, Germany
| | - Guido Werner
- Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, National Reference Centre for Staphylococci and Enterococci, Wernigerode Branch, 38855 Wernigerode, Germany
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25
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Konwar B, De S, Das G, Ramesh A. Inhibition of staphylococcal nuclease by benzimidazole-based Ligand: Implications in DNA-Mediated entrapment and uptake of MRSA by Macrophage-like cells. Bioorg Chem 2024; 144:107133. [PMID: 38278047 DOI: 10.1016/j.bioorg.2024.107133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/22/2023] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
The staphylococcal nuclease also referred as micrococcal nuclease (MNase) is a key drug target as the enzyme degrades the neutrophil extracellular trap (NET) and empowers the pathogen to subvert the host innate immune system. To this end, the current study presents a critical evaluation of MNase inhibition rendered by benzimidazole-based ligands (C1 and C2) and probes its therapeutic implications. A nuclease assay indicated that MNase inhibition rendered by C1 and C2 was ∼ 55 % and ∼ 72 %, respectively, at the highest tested concentration of 10 µM. Studies on enzyme kinetics revealed that C2 rendered non-competitive inhibition and significantly reduced MNase turnover number (Kcat) and catalytic efficiency (Kcat/Km) with an IC50 value of ∼ 1122 nM. In CD spectroscopy, a notable perturbation in the β-sheet content of MNase was observed in presence of C2. Fluorescence-microscope analysis indicated that MNase inhibition by C2 could restore entrapment of methicillin-resistant Staphylococcus aureus (MRSA) in calf-thymus DNA (CT-DNA). Flow cytometry and confocal microscope analysis revealed that uptake of DNA-entrapped MRSA by activated THP-1 cells was reinstated by MNase inhibition rendered by C2. Inhibition of nuclease by the non-toxic ligand C2 holds therapeutic prospect as it has the potential to bolster the DNA-mediated entrapment machinery and mitigate MRSA infections.
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Affiliation(s)
- Barlina Konwar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Sagnik De
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Gopal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Aiyagari Ramesh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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26
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Bie S, Mo Q, Shi C, Yuan H, Li C, Wu T, Li W, Yu H. Interactions of plumbagin with five common antibiotics against Staphylococcus aureus in vitro. PLoS One 2024; 19:e0297493. [PMID: 38277418 PMCID: PMC10817181 DOI: 10.1371/journal.pone.0297493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/06/2024] [Indexed: 01/28/2024] Open
Abstract
Staphylococcus aureus is the main culprit, causing a variety of severe clinical infections. At the same time, clinics are also facing the severe situation of antibiotic resistance. Therefore, effective strategies to address this problem may include expanding the antimicrobial spectrum by exploring alternative sources of drugs or delaying the development of antibiotic resistance through combination therapy so that existing antibiotics can continue to be used. Plumbagin (PLU) is a phytochemical that exhibits antibacterial activity. In the present study, we investigated the in vitro antibacterial activity of PLU. We selected five antibiotics with different mechanisms and inhibitory activities against S. aureus to explore their interaction with the combination of PLU. The interaction of combinations was evaluated by the Bliss independent model and visualized through response surface analysis. PLU exhibited potent antibacterial activity, with half maximal inhibitory concentration (IC50) and minimum inhibitory concentration (MIC) values against S. aureus of 1.73 μg/mL and 4 μg/mL, respectively. Synergism was observed when PLU was combined with nitrofurantoin (NIT), ciprofloxacin (CPR), mecillinam (MEC), and chloramphenicol (CHL). The indifference of the trimethoprim (TMP)-PLU pairing was demonstrated across the entire dose-response matrix, but significant synergy was observed within a specific dose region. In addition, no antagonistic interactions were indicated. Overall, PLU is not only a promising antimicrobial agent but also has the potential to enhance the growth-inhibitory activity of some antibiotics against S. aureus, and the use of the interaction landscape, along with the dose-response matrix, for analyzing and quantifying combination results represents an improved approach to comprehending antibacterial combinations.
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Affiliation(s)
- Songtao Bie
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Qiuyue Mo
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Chen Shi
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Hui Yuan
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Chunshuang Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Tong Wu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Wenlong Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Heshui Yu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
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Li Z, Li X, Shi P, Li P, Fu Y, Tan G, Zhou J, Zeng J, Huang P. Modulation of Acute Intestinal Inflammation by Dandelion Polysaccharides: An In-Depth Analysis of Antioxidative, Anti-Inflammatory Effects and Gut Microbiota Regulation. Int J Mol Sci 2024; 25:1429. [PMID: 38338707 PMCID: PMC10855136 DOI: 10.3390/ijms25031429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Acute colitis is a complex disease that can lead to dysregulation of the gut flora, inducing more complex parenteral diseases. Dandelion polysaccharides (DPSs) may have potential preventive and therapeutic effects on enteritis. In this study, LPS was used to induce enteritis and VC was used as a positive drug control to explore the preventive and therapeutic effects of DPS on enteritis. The results showed that DPS could repair the intestinal barrier, down-regulate the expression of TNF-α, IL-6, IL-1β, and other pro-inflammatory factors, up-regulate the expression of IL-22 anti-inflammatory factor, improve the antioxidant capacity of the body, and improve the structure of intestinal flora. It is proved that DPS can effectively prevent and treat LPS-induced acute enteritis and play a positive role in promoting intestinal health.
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Affiliation(s)
- Zhu Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Xinyao Li
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Panpan Shi
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Pingping Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yue Fu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Guifeng Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Junjuan Zhou
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Peng Huang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
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Barcudi D, Blasko E, Gonzalez MJ, Gagetti P, Lamberghini R, Garnero A, Sarkis C, Faccone D, Lucero C, Tosoroni D, Bocco JL, Corso A, Sola C. Different evolution of S. aureus methicillin-resistant and methicillin-susceptible infections, Argentina. Heliyon 2024; 10:e22610. [PMID: 38163174 PMCID: PMC10755277 DOI: 10.1016/j.heliyon.2023.e22610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 01/03/2024] Open
Abstract
Staphylococcus aureus-(SA) is widespread among healthcare-associated-(HA) and the community-associated-(CA) infections. However, the contributions of MRSA and MSSA to the SA overall burden remain unclear. In a nationally-representative-survey conducted in Argentina, 668 SA clinical isolates from 61 hospitals were examined in a prospective, cross-sectional, multicenter study in April 2015. The study aimed to analyze MRSA molecular epidemiology, estimate overall SA infection incidence (MSSA, MRSA, and genotypes) in community-onset (CO: HACO, Healthcare-Associated-CO and CACO, Community-Associated-CO) and healthcare-onset (HO: HAHO, Healthcare-associated-HO) infections, stratified by age groups. Additionally temporal evolution was estimated by comparing this study's (2015) incidence values with a previous study (2009) in the same region. Erythromycin-resistant-MSSA and all MRSA strains were genetically typed. The SA total-infections (TI) overall-incidence was 49.1/100,000 monthly-visits, 25.1 and 24.0 for MRSA and MSSA respectively (P = 0.5889), in April 2015. In adults with invasive-infections (INVI), MSSA was 15.7 and MRSA was 11.8 (P = 0.0288), 1.3-fold higher. HA SA infections, both MSSA and MRSA, surpassed CA infections by over threefold. During 2009-2015, there was a significant 23.4 % increase in the SA infections overall-incidence, mainly driven by MSSA, notably a 54.2 % increase in INVI among adults, while MRSA infection rates remained stable. The MSSA rise was accompanied by increased antimicrobial resistance, particularly to erythromycin, linked to MSSA-CC398-t1451-ermT + -IEC+-pvl- emergence. The SA-infections rise was primarily attributed to community-onset-infections (37.3 % and 62.4 % increase for TI and INVI, respectively), particularly HACO-MSSA and HACO-MRSA in adults, as well as CACO-MSSA. The main CA-MRSA-PFGE-typeN-ST30-SCCmecIVc-PVL+/- clone along with other clones (USA300-ST8-IV-LV-PVL+/-, PFGE-typeDD-ST97-IV- PVL-) added to rather than replaced CA-MRSA-PFGE-typeI-ST5-SCCmecIVa-PVL+/- clone in HA invasive-infections. They also displaced clone HA-MRSA-PFGE-typeA-ST5-SCCmecI, mainly in HAHO infections. The overall-burden of SA infections is rising in Argentina, driven primarily by community-onset MSSA, particularly in adults, linked to increased erythromycin-resistance and MSSA-CC398-t1451-ermT + -IEC+-pvl- emergence. Novel knowledge and transmission-control strategies are required for MSSA.
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Affiliation(s)
- Danilo Barcudi
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000, Córdoba, Argentina
| | - Enrique Blasko
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000, Córdoba, Argentina
| | - María José Gonzalez
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000, Córdoba, Argentina
| | - Paula Gagetti
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Ricardo Lamberghini
- Cátedra de Infectología I, Hospital Rawson, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Bajada Pucará 2025, X5000, Córdoba, Argentina
| | - Analía Garnero
- Servicio de Infectología, Hospital de Niños de la Santísima Trinidad de Córdoba, Córdoba, Bajada Pucará 787, X 5000, ANN, Argentina
| | - Claudia Sarkis
- Hospital de Pediatría S.A.M.I.C."Prof. Dr. Juan P. Garrahan”, Combate de los Pozos 1881, C1245, AAM, CABA, Argentina
| | - Diego Faccone
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Celeste Lucero
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Dario Tosoroni
- Informática Médica, Facultad de Medicina, Universidad Católica de Córdoba, Jacinto Ríos 555, X5004, ASK, Córdoba, Argentina
| | | | - José L. Bocco
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000, Córdoba, Argentina
| | - Alejandra Corso
- Servicio Antimicrobianos, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS “Dr. Carlos G. Malbrán”, Ciudad Autónoma de Buenos Aires, Argentina
| | - Claudia Sola
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI) CONICET and Universidad Nacional de Córdoba, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000, Córdoba, Argentina
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29
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Khairullah AR, Kurniawan SC, Sudjarwo SA, Effendi MH, Widodo A, Moses IB, Hasib A, Zahra RLA, Gelolodo MA, Kurniawati DA, Riwu KHP, Silaen OSM, Afnani DA, Ramandinianto SC. Kinship analysis of mecA gene of methicillin-resistant Staphylococcus aureus isolated from milk and risk factors from the farmers in Blitar, Indonesia. Vet World 2024; 17:216-225. [PMID: 38406357 PMCID: PMC10884576 DOI: 10.14202/vetworld.2024.216-225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 01/02/2024] [Indexed: 02/27/2024] Open
Abstract
Background and Aim There are numerous reports of subclinical mastitis cases in Blitar, which is consistent with the region's high milk production and dairy cattle population. Staphylococcus aureus, which is often the cause of mastitis cases, is widely known because of its multidrug-resistant properties and resistance to β-lactam antibiotic class, especially the methicillin-resistant S. aureus (MRSA) strains. This study aimed to molecular detection and sequence analysis of the mecA gene in milk and farmer's hand swabs to show that dairy cattle are reservoirs of MRSA strains. Materials and Methods A total of 113 milk samples and 39 farmers' hand swab samples were collected from a dairy farm for the isolation of S. aureus using Mannitol salt agar. The recovered isolates were further characterized using standard microbiological techniques. Isolates confirmed as S. aureus were tested for sensitivity to antibiotics. Oxacillin Resistance Screening Agar Base testing was used to confirm the presence of MRSA, whereas the mecA gene was detected by polymerase chain reaction and sequencing. Results A total of 101 samples were confirmed to be S. aureus. There were 2 S. aureus isolates that were multidrug-resistant and 14 S. aureus isolates that were MRSA. The mecA gene was detected in 4/14 (28.6%) phenotypically identified MRSA isolates. Kinship analysis showed identical results between mecA from milk and farmers' hand swabs. No visible nucleotide variation was observed in the two mecA sequences of isolates from Blitar, East Java. Conclusion The spread of MRSA is a serious problem because the risk of zoonotic transmission can occur not only to people who are close to livestock in the workplace, such as dairy farm workers but also to the wider community through the food chain.
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Affiliation(s)
- Aswin Rafif Khairullah
- Division of Animal Husbandry, Faculty of Veterinary Medicine, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Kampus C Mulyorejo, Surabaya 60115, East Java, Indonesia
| | - Shendy Canadya Kurniawan
- Master Program of Animal Sciences, Department of Animal Sciences, Specialisation in Molecule, Cell and Organ Functioning, Wageningen University and Research, Wageningen 6708 PB, Netherlands
| | - Sri Agus Sudjarwo
- Division of Basic Veterinary Medicine, Faculty of Veterinary Medicine, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Kampus C Mulyorejo, Surabaya 60115, East Java, Indonesia
| | - Mustofa Helmi Effendi
- Division of Veterinary Public Health, Faculty of Veterinary Medicine, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Kampus C Mulyorejo, Surabaya 60115, East Java, Indonesia
| | - Agus Widodo
- Department of Health, Faculty of Vocational Studies, Universitas Airlangga, Jl. Dharmawangsa Dalam Selatan No. 28-30, Kampus B Airlangga, Surabaya 60115, East Java, Indonesia
| | - Ikechukwu Benjamin Moses
- Department of Applied Microbiology, Faculty of Science, Ebonyi State University, Abakaliki 480211, Nigeria
| | - Abdullah Hasib
- School of Agriculture and Food Sustainability, The University of Queensland, Gatton, QLD 4343, Queensland, Australia
| | - Reichan Lisa Az Zahra
- Profession Program of Veterinary Medicine, Faculty of Veterinary Medicine, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Kampus C Mulyorejo, Surabaya 60115, East Java, Indonesia
| | - Maria Aega Gelolodo
- Department of Animal Infectious Diseases and Veterinary Public Health, Faculty of Medicine and Veterinary Medicine, Universitas Nusa Cendana, Jl. Adisucipto Penfui, Kupang 85001, East Nusa Tenggara, Indonesia
| | - Dyah Ayu Kurniawati
- Indonesia Research Center for Veterinary Science, Jl. RE Martadinata No. 30, Bogor 16114, West Java, Indonesia
| | - Katty Hendriana Priscilia Riwu
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Universitas Pendidikan Mandalika, Jl. Pemuda No. 59A, Dasan Agung Baru, Mataram 83125, West Nusa Tenggara, Indonesia
| | - Otto Sahat Martua Silaen
- Doctoral Program of Biomedical Science, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6 Senen, Jakarta 10430, Indonesia
| | - Daniah Ashri Afnani
- Department of Microbiology and Parasitology, Faculty of Veterinary Medicine, Universitas Pendidikan Mandalika, Jl. Pemuda No. 59A, Dasan Agung Baru, Mataram 83125, West Nusa Tenggara, Indonesia
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30
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Stefany Aires do Nascimento FB, do Amaral Valente Sá LG, de Andrade Neto JB, da Silva LJ, Rodrigues DS, de Farias Cabral VP, Barbosa AD, Almeida Moreira LE, Braga Vasconcelos CR, Cavalcanti BC, França Rios ME, Silva J, Marinho ES, Dos Santos HS, de Mesquita JR, Pinto Lobo MD, de Moraes MO, Nobre Júnior HV, da Silva CR. Antimicrobial activity of hydralazine against methicillin-resistant and methicillin-susceptible Staphylococcus aureus. Future Microbiol 2024; 19:91-106. [PMID: 38294293 DOI: 10.2217/fmb-2023-0160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/25/2023] [Indexed: 02/01/2024] Open
Abstract
Background: Staphylococcus aureus is a human pathogen responsible for high mortality rates. The development of new antimicrobials is urgent. Materials & methods: The authors evaluated the activity of hydralazine along with its synergism with other drugs and action on biofilms. With regard to action mechanisms, the authors evaluated cell viability, DNA damage and molecular docking. Results: MIC and minimum bactericidal concentration values ranged from 128 to 2048 μg/ml. There was synergism with oxacillin (50%) and vancomycin (25%). Hydralazine reduced the viability of biofilms by 50%. After exposure to hydralazine 2× MIC, 58.78% of the cells were unviable, 62.07% were TUNEL positive and 27.03% presented damage in the comet assay (p < 0.05). Hydralazine showed affinity for DNA gyrase and TyrRS. Conclusion: Hydralazine is a potential antibacterial.
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Affiliation(s)
- Francisca B Stefany Aires do Nascimento
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Lívia Gurgel do Amaral Valente Sá
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, 60190-180, Brazil
| | - João B de Andrade Neto
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, 60190-180, Brazil
| | - Lisandra Juvêncio da Silva
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Daniel Sampaio Rodrigues
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Vitória P de Farias Cabral
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Amanda Dias Barbosa
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Lara E Almeida Moreira
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Camille R Braga Vasconcelos
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Bruno Coêlho Cavalcanti
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
- Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Maria E França Rios
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
- Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Jacilene Silva
- Department of Chemistry, Group of Theoretical Chemistry & Electrochemistry (GQTE), State University of Ceará, Limoeiro do Norte, Ceará, 62930-000, Brazil
| | - Emmanuel Silva Marinho
- Department of Chemistry, Group of Theoretical Chemistry & Electrochemistry (GQTE), State University of Ceará, Limoeiro do Norte, Ceará, 62930-000, Brazil
| | - Helcio Silva Dos Santos
- Science & Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, 62010-560, Brazil
| | - Jacó Rl de Mesquita
- St. Joseph Hospital for Infectious Diseases, Fortaleza, CE, 60455-610, Brazil
| | | | - Manoel Odorico de Moraes
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
- Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Hélio V Nobre Júnior
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
| | - Cecília Rocha da Silva
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil
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Abdullahi IN, Latorre-Fernández J, Reuben RC, Trabelsi I, González-Azcona C, Arfaoui A, Usman Y, Lozano C, Zarazaga M, Torres C. Beyond the Wild MRSA: Genetic Features and Phylogenomic Review of mecC-Mediated Methicillin Resistance in Non- aureus Staphylococci and Mammaliicocci. Microorganisms 2023; 12:66. [PMID: 38257893 PMCID: PMC10818522 DOI: 10.3390/microorganisms12010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024] Open
Abstract
Methicillin resistance, mediated by the mecA gene in staphylococci and mammaliicocci, has caused tremendous setbacks in the use of antibiotics in human and veterinary medicine due to its high potential of presenting the multidrug resistance (MDR) phenotype. Three other mec analogs exist, of which the mecC has evolutionary been associated with methicillin-resistant Staphylococcus aureus (MRSA) in wild animals, thus loosely referred to as the wild MRSA. In this study, we present an epidemiological review and genomic analysis of non-aureus staphylococci and mammaliicocci that carry the mecC-mediated methicillin resistance trait and determine whether this trait has any relevant link with the One Health niches. All previous studies (2007 till 2023) that described the mecC gene in non-aureus staphylococci and mammaliicocci were obtained from bibliometric databases, reviewed, and systematically analyzed to obtain the antimicrobial resistance (AMR) and virulence determinants, mobilome, and other genetic contents. Moreover, core genome single-nucleotide polymorphism analysis was used to assess the relatedness of these strains. Of the 533 articles analyzed, only 16 studies (on livestock, environmental samples, milk bulk tanks, and wild animals) were eligible for inclusion, of which 17 genomes from 6 studies were used for various in silico genetic analyses. Findings from this systematic review show that all mecC-carrying non-aureus staphylococci were resistant to only beta-lactam antibiotics and associated with the classical SCCmec XI of S. aureusLGA251. Similarly, two studies on wild animals reported mecC-carrying Mammaliicoccus stepanovicii associated with SCCmec XI. Nevertheless, most of the mecC-carrying Mammaliicoccus species presented an MDR phenotype (including linezolid) and carried the SCCmec-mecC hybrid associated with mecA. The phylogenetic analysis of the 17 genomes revealed close relatedness (<20 SNPs) and potential transmission of M. sciuri and M. lentus strains in livestock farms in Algeria, Tunisia, and Brazil. Furthermore, closely related M. sciuri strains from Austria, Brazil, and Tunisia (<40 SNPs) were identified. This systematic review enhances our comprehension of the epidemiology and genetic organization of mecC within the non-aureus staphylococci and mammaliicocci. It could be hypothesized that the mecC-carrying non-aureus staphylococci are evolutionarily related to the wild MRSA-mecC. The potential implications of clonal development of a lineage of mecA/mecC carrying strains across multiple dairy farms in a vast geographical region with the dissemination of MDR phenotype is envisaged. It was observed that most mecC-carrying non-aureus staphylococci and mammaliicocci were reported in mastitis cases. Therefore, veterinarians and veterinary microbiology laboratories must remain vigilant regarding the potential existence of mecA/mecC strains originating from mastitis as a potential niche for this resistance trait.
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Affiliation(s)
- Idris Nasir Abdullahi
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Javier Latorre-Fernández
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Rine Christopher Reuben
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Islem Trabelsi
- Bioresources, Environment and Biotechnology Laboratory, Higher Institute of Applied Biological Sciences of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia;
| | - Carmen González-Azcona
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Ameni Arfaoui
- Laboratory of Microorganisms and Active Biomolecules, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis 1068, Tunisia;
| | - Yahaya Usman
- Department of Medical Laboratory Science, Ahmadu Bello University, Zaria 810107, Nigeria;
| | - Carmen Lozano
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Myriam Zarazaga
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
| | - Carmen Torres
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006 Logroño, Spain; (I.N.A.); (J.L.-F.); (R.C.R.); (C.G.-A.); (C.L.); (M.Z.)
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de Araújo-Neto JB, Oliveira-Tintino CDDM, de Araújo GA, Alves DS, Ribeiro FR, Brancaglion GA, Carvalho DT, Lima CMG, Mohammed Ali HSH, Rather IA, Wani MY, Emran TB, Coutinho HDM, Balbino VDQ, Tintino SR. 3-Substituted Coumarins Inhibit NorA and MepA Efflux Pumps of Staphylococcus aureus. Antibiotics (Basel) 2023; 12:1739. [PMID: 38136773 PMCID: PMC10741188 DOI: 10.3390/antibiotics12121739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/02/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Coumarins are compounds with scientifically proven antibacterial properties, and modifications to the chemical structure are known to improve their effects. This information is even more relevant with the unbridled advances of antibiotic resistance, where Staphylococcus aureus and its efflux pumps play a prominent role. The study's objective was to evaluate the potential of synthetic coumarins with different substitutions in the C-3 position as possible inhibitors of the NorA and MepA efflux pumps of S. aureus. For this evaluation, the following steps took place: (i) the determination of the minimum inhibitory concentration (MIC); (ii) the association of coumarins with fluoroquinolones and ethidium bromide (EtBr); (iii) the assessment of the effect on EtBr fluorescence emission; (iv) molecular docking; and (v) an analysis of the effect on membrane permeability. Coumarins reduced the MICs of fluoroquinolones and EtBr between 50% and 87.5%. Coumarin C1 increased EtBr fluorescence emission between 20 and 40% by reinforcing the evidence of efflux inhibition. The molecular docking results demonstrated that coumarins have an affinity with efflux pumps and establish mainly hydrogen bonds and hydrophobic interactions. Furthermore, C1 did not change the permeability of the membrane. Therefore, we conclude that these 3-substituted coumarins act as inhibitors of the NorA and MepA efflux pumps of S. aureus.
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Affiliation(s)
- José B. de Araújo-Neto
- Postgraduate Program in Biological Sciences, Biosciences Center, Federal University of Pernambuco, Recife 50740-570, PE, Brazil; (J.B.d.A.-N.); (V.d.Q.B.)
| | - Cícera D. de M. Oliveira-Tintino
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, CE, Brazil; (C.D.d.M.O.-T.); (G.A.d.A.); (D.S.A.); (S.R.T.)
| | - Gildênia A. de Araújo
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, CE, Brazil; (C.D.d.M.O.-T.); (G.A.d.A.); (D.S.A.); (S.R.T.)
| | - Daniel S. Alves
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, CE, Brazil; (C.D.d.M.O.-T.); (G.A.d.A.); (D.S.A.); (S.R.T.)
| | - Fernanda R. Ribeiro
- Pharmaceutical Chemistry Research Laboratory, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, Alfenas 37130-001, MG, Brazil; (F.R.R.); (G.A.B.); (D.T.C.)
| | - Guilherme A. Brancaglion
- Pharmaceutical Chemistry Research Laboratory, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, Alfenas 37130-001, MG, Brazil; (F.R.R.); (G.A.B.); (D.T.C.)
| | - Diogo T. Carvalho
- Pharmaceutical Chemistry Research Laboratory, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, Alfenas 37130-001, MG, Brazil; (F.R.R.); (G.A.B.); (D.T.C.)
| | | | - Hani S. H. Mohammed Ali
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.S.H.M.A.); (I.A.R.)
| | - Irfan A. Rather
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (H.S.H.M.A.); (I.A.R.)
| | - Mohmmad Y. Wani
- Department of Chemistry, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia;
| | - Talha B. Emran
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown University, Providence, RI 02912, USA;
- Legorreta Cancer Center, Brown University, Providence, RI 02912, USA
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Henrique D. M. Coutinho
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, CE, Brazil; (C.D.d.M.O.-T.); (G.A.d.A.); (D.S.A.); (S.R.T.)
| | - Valdir de Q. Balbino
- Postgraduate Program in Biological Sciences, Biosciences Center, Federal University of Pernambuco, Recife 50740-570, PE, Brazil; (J.B.d.A.-N.); (V.d.Q.B.)
| | - Saulo R. Tintino
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, CE, Brazil; (C.D.d.M.O.-T.); (G.A.d.A.); (D.S.A.); (S.R.T.)
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Kang YR, Chung DR, Ko JH, Huh K, Cho SY, Kang CI, Peck KR. Genetic alterations in methicillin-susceptible Staphylococcus aureus associated with high vancomycin minimum inhibitory concentration. Int J Antimicrob Agents 2023; 62:106971. [PMID: 37716577 DOI: 10.1016/j.ijantimicag.2023.106971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/21/2023] [Accepted: 09/09/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND There are many reports on gene mutations observed in methicillin-resistant Staphylococcus aureus (MRSA) showing reduced susceptibility to vancomycin. However, there are limited studies on the genetic alterations that contribute to high vancomycin minimum inhibitory concentrations (MICs) in methicillin-susceptible S. aureus (MSSA). This study aimed to compare MSSA strains with high vancomycin MICs with those with low MICs, and to identify specific genetic alterations associated with increased vancomycin MICs. METHODS In total, 124 MSSA strains were analysed, with 62 having vancomycin MICs of 1-2 mg/L (MS-HV) and the remaining 62 having MICs <1 mg/L (MS-LV) as control. Polymerase chain reaction amplification and sequencing were conducted to identify point mutations and amino acid changes in the vraSR, graRS and walRK operons and rpoB gene. The number of single nucleotide polymorphisms (SNPs) and specific mutations in the indicated gene were compared between the two groups. RESULTS The MS-HV strains had a significantly higher median number of SNPs in studied genes than the MS-LV strains (5 vs 3; P < 0.0001), with higher frequency of SNPs in the graR and walK genes. The MS-HV strains also displayed a significantly higher prevalence of specific mutations in the graR gene (V135I, I136V and V136I) compared with the MS-LV strains. The odds of having a high vancomycin MIC was 5.54 times higher in strains with a mutation in the graR gene, and 5.32 times higher in strains with a mutation in the walK gene, compared with those without these mutations. CONCLUSIONS Mutations in the graR and walK genes may contribute to reduced vancomycin susceptibility in MSSA. This study gives key insights into the mechanisms underlying this phenomenon.
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Affiliation(s)
- Yu Ri Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Asia Pacific Foundation for Infectious Diseases, Seoul, Republic of Korea
| | - Doo Ryeon Chung
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Asia Pacific Foundation for Infectious Diseases, Seoul, Republic of Korea; Centre for Infection Prevention and Control, Samsung Medical Centre, Seoul, Republic of Korea.
| | - Jae-Hoon Ko
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyungmin Huh
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Asia Pacific Foundation for Infectious Diseases, Seoul, Republic of Korea
| | - Sun Young Cho
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Centre for Infection Prevention and Control, Samsung Medical Centre, Seoul, Republic of Korea
| | - Cheol-In Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Li M, Liu Y, Gong Y, Yan X, Wang L, Zheng W, Ai H, Zhao Y. Recent advances in nanoantibiotics against multidrug-resistant bacteria. NANOSCALE ADVANCES 2023; 5:6278-6317. [PMID: 38024316 PMCID: PMC10662204 DOI: 10.1039/d3na00530e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023]
Abstract
Multidrug-resistant (MDR) bacteria-caused infections have been a major threat to human health. The abuse of conventional antibiotics accelerates the generation of MDR bacteria and makes the situation worse. The emergence of nanomaterials holds great promise for solving this tricky problem due to their multiple antibacterial mechanisms, tunable antibacterial spectra, and low probabilities of inducing drug resistance. In this review, we summarize the mechanism of the generation of drug resistance, and introduce the recently developed nanomaterials for dealing with MDR bacteria via various antibacterial mechanisms. Considering that biosafety and mass production are the major bottlenecks hurdling the commercialization of nanoantibiotics, we introduce the related development in these two aspects. We discuss urgent challenges in this field and future perspectives to promote the development and translation of nanoantibiotics as alternatives against MDR pathogens to traditional antibiotics-based approaches.
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Affiliation(s)
- Mulan Li
- Cancer Research Center, Jiangxi University of Chinese Medicine No. 1688 Meiling Avenue, Xinjian District Nanchang Jiangxi 330004 P. R. China
| | - Ying Liu
- Key Laboratory of Follicular Development and Reproductive Health in Liaoning Province, Third Affiliated Hospital of Jinzhou Medical University No. 2, Section 5, Heping Road Jin Zhou Liaoning 121000 P. R. China
| | - Youhuan Gong
- Cancer Research Center, Jiangxi University of Chinese Medicine No. 1688 Meiling Avenue, Xinjian District Nanchang Jiangxi 330004 P. R. China
| | - Xiaojie Yan
- Cancer Research Center, Jiangxi University of Chinese Medicine No. 1688 Meiling Avenue, Xinjian District Nanchang Jiangxi 330004 P. R. China
| | - Le Wang
- Cancer Research Center, Jiangxi University of Chinese Medicine No. 1688 Meiling Avenue, Xinjian District Nanchang Jiangxi 330004 P. R. China
| | - Wenfu Zheng
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology No. 11 Zhongguancun Beiyitiao, Haidian District Beijing 100190 P. R. China
- The University of Chinese Academy of Sciences 19A Yuquan Road, Shijingshan District Beijing 100049 P. R. China
- Cannano Tefei Technology, Co. LTD Room 1013, Building D, No. 136 Kaiyuan Avenue, Huangpu District Guangzhou Guangdong Province 510535 P. R. China
| | - Hao Ai
- Key Laboratory of Follicular Development and Reproductive Health in Liaoning Province, Third Affiliated Hospital of Jinzhou Medical University No. 2, Section 5, Heping Road Jin Zhou Liaoning 121000 P. R. China
| | - Yuliang Zhao
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology No. 11 Zhongguancun Beiyitiao, Haidian District Beijing 100190 P. R. China
- The University of Chinese Academy of Sciences 19A Yuquan Road, Shijingshan District Beijing 100049 P. R. China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences 19B Yuquan Road, Shijingshan District Beijing 100049 P. R. China
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Hernández-Cuellar E, Tsuchiya K, Valle-Ríos R, Medina-Contreras O. Differences in Biofilm Formation by Methicillin-Resistant and Methicillin-Susceptible Staphylococcus aureus Strains. Diseases 2023; 11:160. [PMID: 37987271 PMCID: PMC10660471 DOI: 10.3390/diseases11040160] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/22/2023] Open
Abstract
Staphylococcus aureus (S. aureus) is a common pathogen involved in community- and hospital-acquired infections. Its biofilm formation ability predisposes it to device-related infections. Methicillin-resistant S. aureus (MRSA) strains are associated with more serious infections and higher mortality rates and are more complex in terms of antibiotic resistance. It is still controversial whether MRSA are indeed more virulent than methicillin-susceptible S. aureus (MSSA) strains. A difference in biofilm formation by both types of bacteria has been suggested, but how only the presence of the SCCmec cassette or mecA influences this phenotype remains unclear. In this review, we have searched for literature studying the difference in biofilm formation by MRSA and MSSA. We highlighted the relevance of the icaADBC operon in the PIA-dependent biofilms generated by MSSA under osmotic stress conditions, and the role of extracellular DNA and surface proteins in the PIA-independent biofilms generated by MRSA. We described the prominent role of surface proteins with the LPXTG motif and hydrolases for the release of extracellular DNA in the MRSA biofilm formation. Finally, we explained the main regulatory systems in S. aureus involved in virulence and biofilm formation, such as the SarA and Agr systems. As most of the studies were in vitro using inert surfaces, it will be necessary in the future to focus on biofilm formation on extracellular matrix components and its relevance in the pathogenesis of infection by both types of strains using in vivo animal models.
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Affiliation(s)
- Eduardo Hernández-Cuellar
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Universidad Autónoma de Aguascalientes, Aguascalientes 20100, C.P., México
| | - Kohsuke Tsuchiya
- Division of Immunology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
| | - Ricardo Valle-Ríos
- Research Division, Faculty of Medicine, Universidad Nacional Autónoma de México (UNAM), Mexico City 04360, C.P., México;
- Laboratory of Research in Immunology and Proteomics, Federico Gómez Children’s Hospital of Mexico, Mexico City 06720, C.P., México
| | - Oscar Medina-Contreras
- Epidemiology, Endocrinology & Nutrition Research Unit, Mexico Children’s Hospital (HIMFG), Mexico City 06720, C.P., México;
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Zhuang Q, Guo H, Peng T, Ding E, Zhao H, Liu Q, He S, Zhao G. Advances in the detection of β-lactamase: A review. Int J Biol Macromol 2023; 251:126159. [PMID: 37549760 DOI: 10.1016/j.ijbiomac.2023.126159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/17/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
β-lactamase, an enzyme secreted by bacteria, is the main resistant mechanism of Gram-negative bacteria to β-lactam antibiotics. The resistance of bacteria to β-lactam antibiotics can be evaluated by testing the activity of β-lactamase. Traditional phenotypic detection is a golden principle, but it is time-consuming. In recent years, many new methods have emerged, which improve the efficiency by virtue of their sensitivity, low cost, easy operation, and other advantages. In this paper, we systematically review these researches and emphasize their limits of detection, sample operation, and test duration. Noteworthily, some detection systems can identify the β-lactamase subtype conveniently. We mainly divide these tests into three categories to elaborate their characteristics and application status. Both advantages and disadvantages of these methods are discussed. Additionally, we analyze the recent 5 years published researches to predict the trend of development in this field.
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Affiliation(s)
- Qian Zhuang
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China; Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110122, China
| | - Huijun Guo
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Tian Peng
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Enjie Ding
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Hui Zhao
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Qiulan Liu
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Shiyin He
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China
| | - Guojie Zhao
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China.
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Yue Y, Chen K, Sun C, Ahmed S, Ojha SC. Antimicrobial peptidase lysostaphin at subinhibitory concentrations modulates staphylococcal adherence, biofilm formation, and toxin production. BMC Microbiol 2023; 23:311. [PMID: 37884887 PMCID: PMC10601153 DOI: 10.1186/s12866-023-03052-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND The ability of antimicrobial agents to affect microbial adherence to eukaryotic cell surfaces is a promising antivirulence strategy for combating the global threat of antimicrobial resistance. Inadequate use of antimicrobials has led to widespread instances of suboptimal antibiotic concentrations around infection sites. Therefore, we aimed to examine the varying effect of an antimicrobial peptidase lysostaphin (APLss) on staphylococcal adherence to host cells, biofilm biomass formation, and toxin production as a probable method for mitigating staphylococcal virulence. RESULTS Initially, soluble expression in E. coli and subsequent purification by immobilized-Ni2+ affinity chromatography (IMAC) enabled us to successfully produce a large quantity of highly pure ~ 28-kDa His-tagged mature APLss. The purified protein exhibited potent inhibitory effects against both methicillin-sensitive and methicillin-resistant staphylococcal strains, with minimal inhibitory concentrations (MICs) ranging from 1 to 2 µg/mL, and ultrastructural analysis revealed that APLss-induced concentration-specific changes in the morphological architecture of staphylococcal surface membranes. Furthermore, spectrophotometric and fluorescence microscopy revealed that incubating staphylococcal strains with sub-MIC and MIC of APLss significantly inhibited staphylococcal adherence to human vaginal epithelial cells and biofilm biomass formation. Ultimately, transcriptional investigations revealed that APLss inhibited the expression of agrA (quorum sensing effector) and other virulence genes related to toxin synthesis. CONCLUSIONS Overall, APLss dose-dependently inhibited adhesion to host cell surfaces and staphylococcal-associated virulence factors, warranting further investigation as a potential anti-staphylococcal agent with an antiadhesive mechanism of action using in vivo models of staphylococcal toxic shock syndrome.
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Affiliation(s)
- Yuan Yue
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Shaanxi Normal University, Xi'an, China
| | - Ke Chen
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Southwest Medical University, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Changfeng Sun
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Southwest Medical University, Jiangyang District, Luzhou, 646000, Sichuan, China
| | - Sarfraz Ahmed
- Wellman Centre for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston MA 02114, USA
| | - Suvash Chandra Ojha
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China.
- Southwest Medical University, Jiangyang District, Luzhou, 646000, Sichuan, China.
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Chen S, Zhou P, Wu C, Wang J, Zhou Y, Zhang J, Wang B, Zhao H, Rao L, Li M, Yu F, Lin C. Polymyxin B and fusidic acid, a novel potent synergistic combination against Klebsiella pneumoniae and Escherichia coli isolates with polymyxin B resistance. Front Microbiol 2023; 14:1220683. [PMID: 37886061 PMCID: PMC10598591 DOI: 10.3389/fmicb.2023.1220683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023] Open
Abstract
The increasing prevalence of multidrug-resistant (MDR) Gram-negative bacteria and comparatively limited options of antibiotics pose a major threat to public health worldwide. Polymyxin B is the last resort against extensively resistant Gram-negative bacterial infections. However, a large number of Gram-negative bacteria exhibited high-level resistance to Polymyxin B, bringing challenges for antimicrobial chemotherapy. Combination therapies using polymyxins and other antibiotics are recommended to treat multidrug-resistant pathogens. In this study, we selected Gram-negative bacterial strains, including Klebsiella pneumoniae and Escherichia coli, to explore whether fusidic acid and polymyxin B have a synergistic killing effect. Through broth microdilution, we observed that minimum inhibitory concentrations (MICs) against polymyxin B in the isolates tested were significantly reduced by the addition of fusidic acid. Notably, chequerboard analysis indicated a synergistic effect between polymyxin B and fusidic acid. In addition, subsequent time-kill experiments showed that the combination of polymyxin B and fusidic acid was more effective than a single drug in killing bacteria. Finally, our investigation utilizing the murine model revealed a higher survival rate in the combination therapy group compared to the monotherapy group. Our research findings provide evidence of the synergistic effect between polymyxin B and fusidic acid. Fusidic acid was shown to increase the sensitivity of multi-drug resistant E. coli and K. pneumoniae to polymyxin B, thereby enhancing its bactericidal activity. This study provides new insights into a potential strategy for overcoming polymyxin B resistance, however, further investigations are required to evaluate their feasibility in real clinical settings.
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Affiliation(s)
- Shuying Chen
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Peiyao Zhou
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chunyang Wu
- Department of Respiratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Wang
- Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ying Zhou
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiao Zhang
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Bingjie Wang
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huilin Zhao
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lulin Rao
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Meilan Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fangyou Yu
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chunchan Lin
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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Hou Z, Xu B, Liu L, Yan R, Zhang J, Yin J, Li P, Wei J. Prevalence, drug resistance, molecular typing and comparative genomics analysis of MRSA strains from a tertiary A hospital in Shanxi Province, China. Front Microbiol 2023; 14:1273397. [PMID: 37808303 PMCID: PMC10556501 DOI: 10.3389/fmicb.2023.1273397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Staphylococcus aureus (S. aureus) is an important zoonotic pathogen that causes a high incidence rate and mortality worldwide. This study investigated the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) strains in a tertiary A hospital in Shanxi Province, China, in order to determine the major epidemic clones as well as their antibiotic resistance and virulence characteristics. A total of 212 S. aureus strains were collected in this hospital, and were subjected to antimicrobial susceptibility testing, detection of virulence genes, resistance genes, and efflux pump genes. Among them, 38 MRSA strains were further subjected to detection of biofilm genes, assessment of biofilm formation ability, MLST, spa typing, SCCmec typing, and phylogenetic analysis. The majority of S. aureus strains came from the neonatology department, with secretions and purulent fluid being the main source of samples. The strains showed high resistance to penicillin (98.11%), erythromycin (64.62%) and clindamycin (59.91%), while being sensitive to vancomycin and linezolid. The detection rates of efflux pump genes and resistance genes were high, and there was a significant correlation between resistance gene types and phenotypes, with mecA showing a close correlation with oxacillin. The detection rates of virulence genes and the toxin gene profiles of MSSA and MRSA strains showed significant differences. And the detection rate of biofilm genes in MRSA strains was relatively high, with 13.16% of MRSA strains showing strong biofilm formation ability. The most common epidemic clone of MRSA was ST59-SCCmecIV-t437, followed by ST59-SCCmecV-t437. The former had a higher detection rate of resistance genes and a stronger biofilm formation ability, while the latter had a higher positive rate for pvl gene and stronger pathogenicity, making it more likely to cause systemic infections. Phylogenetic analysis showed that all MRSA strains in this study clustered into three major branches, with distinct differences in antibiotic resistance and virulence characteristics among the branches. ST59-MRSA strains from different species showed consistency and inter-species transmission, but there were differences among ST59-MRSA strains from different geographical locations. In general, most MSSA and MRSA strains exhibited multidrug resistance and carried multiple resistance genes, virulence genes, and biofilm formation genes, warranting further research to elucidate the mechanisms of drug resistance and pathogenesis.
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Affiliation(s)
- Zhuru Hou
- Department of Basic Medicine, Fenyang College of Shanxi Medical University, Fenyang, China
- Key Laboratory of Lvliang for Clinical Molecular Diagnostics, Fenyang, China
| | - Benjin Xu
- Key Laboratory of Lvliang for Clinical Molecular Diagnostics, Fenyang, China
- Department of Medical Laboratory Science, Fenyang College of Shanxi Medical University, Fenyang, China
- Department of Clinical Laboratory, Fenyang Hospital of Shanxi Province, Fenyang, China
| | - Ling Liu
- Key Laboratory of Lvliang for Clinical Molecular Diagnostics, Fenyang, China
- Department of Medical Laboratory Science, Fenyang College of Shanxi Medical University, Fenyang, China
- Department of Clinical Laboratory, Fenyang Hospital of Shanxi Province, Fenyang, China
| | - Rongrong Yan
- Department of Clinical Laboratory, Fenyang Hospital of Shanxi Province, Fenyang, China
| | - Jinjing Zhang
- Department of Clinical Laboratory, Fenyang Hospital of Shanxi Province, Fenyang, China
| | - Jiaxin Yin
- Department of Basic Medicine, Fenyang College of Shanxi Medical University, Fenyang, China
- Key Laboratory of Lvliang for Clinical Molecular Diagnostics, Fenyang, China
| | - Peipei Li
- Department of Basic Medicine, Fenyang College of Shanxi Medical University, Fenyang, China
- Key Laboratory of Lvliang for Clinical Molecular Diagnostics, Fenyang, China
| | - Jianhong Wei
- Department of Basic Medicine, Fenyang College of Shanxi Medical University, Fenyang, China
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Carcione D, Intra J, Andriani L, Campanile F, Gona F, Carletti S, Mancini N, Brigante G, Cattaneo D, Baldelli S, Chisari M, Piccirilli A, Di Bella S, Principe L. New Antimicrobials for Gram-Positive Sustained Infections: A Comprehensive Guide for Clinicians. Pharmaceuticals (Basel) 2023; 16:1304. [PMID: 37765112 PMCID: PMC10536666 DOI: 10.3390/ph16091304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Antibiotic resistance is a public health problem with increasingly alarming data being reported. Gram-positive bacteria are among the protagonists of severe nosocomial and community infections. The objective of this review is to conduct an extensive examination of emerging treatments for Gram-positive infections including ceftobiprole, ceftaroline, dalbavancin, oritavancin, omadacycline, tedizolid, and delafloxacin. From a methodological standpoint, a comprehensive analysis on clinical trials, molecular structure, mechanism of action, microbiological targeting, clinical use, pharmacokinetic/pharmacodynamic features, and potential for therapeutic drug monitoring will be addressed. Each antibiotic paragraph is divided into specialized microbiological, clinical, and pharmacological sections, including detailed and appropriate tables. A better understanding of the latest promising advances in the field of therapeutic options could lead to the development of a better approach in managing antimicrobial therapy for multidrug-resistant Gram-positive pathogens, which increasingly needs to be better stratified and targeted.
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Affiliation(s)
- Davide Carcione
- Laboratory of Medicine and Microbiology, Busto Arsizio Hospital—ASST Valle Olona, 21052 Busto Arsizio, VA, Italy; (D.C.); (G.B.)
| | - Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo Dei Tintori, 20900 Monza, MB, Italy;
| | - Lilia Andriani
- Clinical Pathology and Microbiology Unit, Hospital of Sondrio, 23100 Sondrio, Italy;
| | - Floriana Campanile
- Department of Biomedical and Biotechnological Sciences, Section of Microbiology, University of Catania, 95123 Catania, Italy;
| | - Floriana Gona
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (F.G.); (S.C.)
| | - Silvia Carletti
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (F.G.); (S.C.)
| | - Nicasio Mancini
- Laboratory of Medical Microbiology and Virology, Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy;
- Laboratory of Medical Microbiology and Virology, Fondazione Macchi University Hospital, 21100 Varese, Italy
| | - Gioconda Brigante
- Laboratory of Medicine and Microbiology, Busto Arsizio Hospital—ASST Valle Olona, 21052 Busto Arsizio, VA, Italy; (D.C.); (G.B.)
| | - Dario Cattaneo
- Department of Infectious Diseases ASST Fatebenefratelli Sacco, 20157 Milan, Italy;
| | - Sara Baldelli
- Pharmacology Laboratory, Clinical Chemistry Laboratory, Diagnostic Department, ASST Spedali Civili, 25123 Brescia, Italy;
| | - Mattia Chisari
- Microbiology and Virology Unit, Great Metropolitan Hospital “Bianchi-Melacrino-Morelli”, 89100 Reggio Calabria, Italy;
| | - Alessandra Piccirilli
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Stefano Di Bella
- Clinical Department of Medical, Surgical, and Health Sciences, Trieste University, 34129 Trieste, Italy;
| | - Luigi Principe
- Microbiology and Virology Unit, Great Metropolitan Hospital “Bianchi-Melacrino-Morelli”, 89100 Reggio Calabria, Italy;
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Baymenov BM, Bulashev AK, Chuzhebayeva GD, Aliyeva GK, Beishova IS, Kokanov SK, Raketsky VA. Phenotypic and genotypic resistance to antibiotics in Staphylococcus aureus strains isolated from cattle milk in Northern Kazakhstan. Vet World 2023; 16:1815-1820. [PMID: 37859965 PMCID: PMC10583881 DOI: 10.14202/vetworld.2023.1815-1820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/03/2023] [Indexed: 10/21/2023] Open
Abstract
Background and Aim Staphylococcus aureus is the most frequent and ubiquitous cause of mastitis in cows. In recent decades, antibiotic resistance has rapidly spread among infectious disease pathogens in Kazakhstan and globally. This study examined the phenotypic and genotypic resistance of S. aureus strains obtained from cattle milk to antibiotics. Materials and Methods In 2021 and 2022, 675 cow milk samples were collected from 16 dairy farms in Northern Kazakhstan. Staphylococcus aureus was identified using culture and biochemical methods. The nature of antibiotic resistance was determined by the disk diffusion (DD) method. The distribution of antibiotic resistance genes was determined by polymerase chain reaction. Results Among the obtained S. aureus isolates, high levels of resistance to β-lactam antibiotics (100%), tetracyclines (95.4%), fluoroquinolones (95.4%), and macrolides (60.92%) were observed. Meanwhile, the lowest levels of resistance were identified for sulfonamides (21.84%) and aminoglycosides (27.59%). All the obtained isolates were positive for the nuc gene encoding thermonuclease. The blaZ, ermC, and tetK genes were detected in 45.9%, 77%, and 83.9% of the studied S. aureus isolates, respectively. Conclusion The results indicate a high prevalence of antibiotic resistance in S. aureus isolated from cows with clinical and subclinical forms of mastitis in Northern Kazakhstan. In addition, the prevalence of resistance was higher when evaluated by the DD method than when detecting the specific antibiotic resistance genes blaZ, tetK, and ermC, indicating the need for deeper analysis of the phenotypic and genetic determinants of antibiotic resistance.
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Affiliation(s)
- Bakhit Muratovich Baymenov
- Research Institute of Applied Biotechnology, A. Baitursynov Kostanay Regional University, Kostanai, Republic of Kazakhstan
| | - Aitbay Kabykeshovich Bulashev
- Department of Microbiology and Biotechnology, S. Seifullin Kazakh Agro Technical Research University, Astana, Republic of Kazakhstan
| | | | - Gulnur Kozyevna Aliyeva
- Research Institute of Applied Biotechnology, A. Baitursynov Kostanay Regional University, Kostanai, Republic of Kazakhstan
| | - Indira Saltanovna Beishova
- Testing Center, West Kazakhstan Agrarian and Technical University Named after Zhangir Khan, Uralsk, Republic of Kazakhstan
| | - Sabit Kabdyshevich Kokanov
- Research Institute of Applied Biotechnology, A. Baitursynov Kostanay Regional University, Kostanai, Republic of Kazakhstan
| | - Vitaly Anatolevich Raketsky
- Department of Veterinary Medicine, A. Baitursynov Kostanay Regional University, Kostanai, Republic of Kazakhstan
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Belete MA, Gedefie A, Alemayehu E, Debash H, Mohammed O, Gebretsadik D, Ebrahim H, Tilahun M. The prevalence of vancomycin-resistant Staphylococcus aureus in Ethiopia: a systematic review and meta-analysis. Antimicrob Resist Infect Control 2023; 12:86. [PMID: 37649060 PMCID: PMC10468870 DOI: 10.1186/s13756-023-01291-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023] Open
Abstract
INTRODUCTION Vancomycin-resistant Staphylococcus aureus, identified as a "high priority antibiotic-resistant pathogen" by the World Health Organization, poses a significant threat to human health. This systematic review and meta-analysis aimed to estimate the pooled prevalence of vancomycin-resistant Staphylococcus aureus in Ethiopia. METHODS This systematic review and meta-analysis was reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Studies that reported VRSA prevalence due to infection or carriage from human clinical specimens were extensively searched in bibliographic databases and grey literatures using entry terms and combination key words. Electronic databases like PubMed, Google Scholar, Wiley Online Library, African Journal Online, Scopus, Science Direct, Embase, and ResearchGate were used to find relevant articles. In addition, the Joanna Briggs Institute quality appraisal tool was used to assess the quality of the included studies. Stata version 14 software was used for statistical analysis. Forest plots using the random-effect model were used to compute the overall pooled prevalence of VRSA and for the subgroup analysis. Heterogeneity was assessed using Cochrane chi-square (I2) statistics. After publication bias was assessed using a funnel plot and Egger's test, trim & fill analysis was carried out. Furthermore, sensitivity analysis was done to assess the impact of a single study on pooled effect size. RESULTS Of the 735 studies identified, 31 studies that fulfilled the eligibility criteria were included for meta-analysis consisted of 14,966 study participants and 2,348 S. aureus isolates. The overall pooled prevalence of VRSA was 14.52% (95% CI: 11.59, 17.44). Significantly high level of heterogeneity was observed among studies (I2 = 93.0%, p < 0.001). The region-based subgroup analysis depicted highest pooled prevalence of 47.74% (95% CI: 17.79, 77.69) in Sidama region, followed by 14.82% (95% CI: 8.68, 19.88) in Amhara region, while Oromia region had the least pooled prevalence 8.07% (95% CI: 4.09, 12.06). The subgroup analysis based on AST methods depicted a significant variation in pooled prevalence of VRSA (6.3% (95% CI: 3.14, 9.43) for MIC-based methods, and 18.4% (95% CI: 14.03, 22.79) for disk diffusion AST method) which clearly showed that disk diffusion AST method overestimates the pooled VRSA prevalence. The total number of S. aureus isolates was found to be the responsible variable for the existence of heterogeneity among studies (p = 0.033). CONCLUSION This study showed an alarmingly high pooled prevalence of VRSA necessitating routine screening, appropriate antibiotic usage, and robust infection prevention measures to manage MRSA infections and control the emergence of drug resistance. Furthermore, mainly attributable to the overestimation of VRSA burden while using disk diffusion method, there is an urgent need to improve the methods to determine vancomycin resistance in Ethiopia and incorporate MIC-based VRSA detection methods in routine clinical laboratory tests, and efforts should be directed at improving it nationally. TRIAL REGISTRATION PROSPERO registration identification number: CRD42023422043.
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Affiliation(s)
- Melaku Ashagrie Belete
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia.
| | - Alemu Gedefie
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Ermiyas Alemayehu
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Habtu Debash
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Ousman Mohammed
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Daniel Gebretsadik
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Hussen Ebrahim
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Mihret Tilahun
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
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Zhang J, Tu J, Chen Y, Jin X. Clinical characteristics and homology analysis of Staphylococcus aureus from would infection at a tertiary hospital in southern Zhejiang, China. BMC Microbiol 2023; 23:217. [PMID: 37573311 PMCID: PMC10422768 DOI: 10.1186/s12866-023-02921-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 06/28/2023] [Indexed: 08/14/2023] Open
Abstract
OBJECTIVE Staphylococcus aureus (S. aureus), especially Methicillin resistant S. aureus (MRSA), has been disseminated across communities and hospitals, associated with severe infections and organ failure. In order to understand the clinical epidemiological characteristics of S. aureus stains in the First Affiliated Hospital of Wenzhou Medical University in 2018, the prevalence and the drug resistance of S. aureus stains were investigated, for improving the clinical effective prevention and control of S. aureus infection. METHODS A total of 105 S. aureus isolates were separated from wound infection of inpatients in the First Affiliated Hospital of Wenzhou Medical University in 2018, and the department distributions and drug resistance of the isolates were analyzed. The genotyping homology analysis was conducted through the random amplified polymorphic DNA typing (RAPD-PCR) coupled with NTSYS cluster analysis. RESULTS Among the 105 strains of S. aureus, 31 isolates were MRSA. The prevalence of MRSA among inpatients in the Departments of Burn, Trauma, Orthopedics, Nephrology and Neurosurgery were 35.48%, 19.35%, 9.68%, 6.45%, and 29.03%, respectively. Among the 105 strains, 35.24% strains were the hospital-acquired infections (HAI) and 64.76% strains were community-acquired infections (CAI). DNA genotyping of the 105 S. aureus strains showed seventeen different groups, most of which were type I, type VII, type IX, and type VII, the others were scattered. CONCLUSION This study highlights the prevalence of S. aureus strains in the First Affiliated Hospital of Wenzhou Medical University in 2018. The emergence and mutation of the strains should be closely monitored for the prevention and control of the S. aureus infection and transmission in the nosocomial settings.
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Affiliation(s)
- Jiarong Zhang
- Department of Nosocomial Infection Prevention and Control, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China
| | - Jingjing Tu
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China
| | - Yongping Chen
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- Department of Infectious Diseases, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
| | - Xiaoya Jin
- Department of Nosocomial Infection Prevention and Control, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- The Key Laboratory of Diagnosis and Controlment for the Development of Chronic Liver Disease of Zhejiang Province, Ouhai District, Wenzhou, Zhejiang, 325000, China.
- Department of Infectious Diseases, the First Affiliated Hospital of Wenzhou Medical University, Ouhai District, Wenzhou, Zhejiang, 325000, China.
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Wang Y, Zhang P, Wu J, Chen S, Jin Y, Long J, Duan G, Yang H. Transmission of livestock-associated methicillin-resistant Staphylococcus aureus between animals, environment, and humans in the farm. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:86521-86539. [PMID: 37418185 DOI: 10.1007/s11356-023-28532-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/28/2023] [Indexed: 07/08/2023]
Abstract
Staphylococcus aureus (S. aureus) is a fearsome bacterial pathogen that can colonize and infect humans and animals. Depending on the different sources, MRSA is classified as hospital-associated methicillin-resistant S. aureus (HA-MRSA), community-associated MRSA (CA-MRSA), and livestock-associated MRSA (LA-MRSA). LA-MRSA is initially associated with livestock, and clonal complexes (CCs) were almost always 398. However, the continued development of animal husbandry, globalization, and the widespread use of antibiotics have increased the spread of LA-MRSA among humans, livestock, and the environment, and other clonal complexes such as CC9, CC5, and CC8 have gradually emerged in various countries. This may be due to frequent host switching between humans and animals, as well as between animals. Host-switching is typically followed by subsequent adaptation through acquisition and/or loss of mobile genetic elements (MGEs) such as phages, pathogenicity islands, and plasmids as well as further host-specific mutations allowing it to expand into new host populations. This review aimed to provide an overview of the transmission characteristics of S. aureus in humans, animals, and farm environments, and also to describe the main prevalent clones of LA-MRSA and the changes in MGEs during host switching.
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Affiliation(s)
- Ying Wang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Peihua Zhang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Jian Wu
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Shuaiyin Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Yuefei Jin
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Jinzhao Long
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Guangcai Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China
| | - Haiyan Yang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 of Science Avenue, Zhengzhou, 450001, China.
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Romanò A, Ivanovic I, Segessemann T, Vazquez Rojo L, Widmer J, Egger L, Dreier M, Sesso L, Vaccani M, Schuler M, Frei D, Frey J, Ahrens CH, Steiner A, Graber HU. Elucidation of the Bovine Intramammary Bacteriome and Resistome from healthy cows of Swiss dairy farms in the Canton Tessin. Front Microbiol 2023; 14:1183018. [PMID: 37583512 PMCID: PMC10425240 DOI: 10.3389/fmicb.2023.1183018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/26/2023] [Indexed: 08/17/2023] Open
Abstract
Healthy, untreated cows of nine dairy herds from the Swiss Canton Tessin were analyzed three times within one year to identify the most abundant species of the intramammary bacteriome. Aseptically collected milk samples were cultured and bacteria identified using MALDI-TOF. Of 256 cows analyzed, 96% were bacteriologically positive and 80% of the 1,024 quarters were positive for at least one bacterial species. 84.5% of the quarters were healthy with somatic cell counts (SCC) < 200,000 cells/mL, whereas 15.5% of the quarters showed a subclinical mastitis (SCC ≥ 200,000 cells/mL). We could assign 1,288 isolates to 104 different bacterial species including 23 predominant species. Non-aureus staphylococci and mammaliicocci (NASM) were most prevalent (14 different species; 73.5% quarters). Staphylococcus xylosus and Mammaliicoccus sciuri accounted for 74.7% of all NASM isolates. To describe the intramammary resistome, 350 isolates of the predominant species were selected and subjected to short-read whole genome sequencing (WGS) and phenotypic antibiotic resistance profiling. While complete genomes of eight type strains were available, the remaining 15 were de novo assembled with long reads as a resource for the community. The 23 complete genomes served for reference-based assembly of the Illumina WGS data. Both chromosomes and mobile genetic elements were examined for antibiotic resistance genes (ARGs) using in-house and online software tools. ARGs were then correlated with phenotypic antibiotic resistance data from minimum inhibitory concentration (MIC). Phenotypic and genomic antimicrobial resistance was isolate-specific. Resistance to clindamycin and oxacillin was most frequently observed (65 and 30%) in Staphylococcus xylosus but could not be linked to chromosomal or plasmid-borne ARGs. However, in several cases, the observed antimicrobial resistance could be explained by the presence of mobile genetic elements like tetK carried on small plasmids. This represents a possible mechanism of transfer between non-pathogenic bacteria and pathogens of the mammary gland within and between herds. The-to our knowledge-most extensive bacteriome reported and the first attempt to link it with the resistome promise to profoundly affect veterinary bacteriology in the future and are highly relevant in a One Health context, in particular for mastitis, the treatment of which still heavily relies on antibiotics.
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Affiliation(s)
- Alicia Romanò
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
- Graduate School of Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Ivana Ivanovic
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
| | - Tina Segessemann
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Laura Vazquez Rojo
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
| | - Jérôme Widmer
- Method Development and Analytics, Group Biochemistry of Milk, Agroscope, Bern, Switzerland
| | - Lotti Egger
- Method Development and Analytics, Group Biochemistry of Milk, Agroscope, Bern, Switzerland
| | - Matthias Dreier
- Food Microbial Systems, Group Cultures, Biodiversity, and Terroir, Agroscope, Bern, Switzerland
| | - Lorenzo Sesso
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Michael Vaccani
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Martin Schuler
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Daniel Frei
- Method Development and Analytics, Group Molecular Diagnostics, Genomics, and Bioinformatics, Agroscope, Wädenswil, Switzerland
| | - Juerg Frey
- Method Development and Analytics, Group Molecular Diagnostics, Genomics, and Bioinformatics, Agroscope, Wädenswil, Switzerland
| | - Christian H. Ahrens
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Adrian Steiner
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Hans Ulrich Graber
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
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Suepaul S, Stegger M, Boyen F, Georges K, Butaye P. The Diversity and Zoonotic Potential of Staphylococcus pseudintermedius in Humans and Pet Dogs in Trinidad and Tobago. Antibiotics (Basel) 2023; 12:1266. [PMID: 37627686 PMCID: PMC10451167 DOI: 10.3390/antibiotics12081266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
Staphylococcus pseudintermedius is an opportunistic pathogen that is frequently isolated from canines. It is of escalating interest because of its increasing antimicrobial resistance and zoonotic potential. Although many published articles are available that describe isolates obtained from diseased dogs and humans, this study focused on isolates obtained from healthy dogs and their owners who presented at clinics for routine veterinary care and utilized whole genome sequencing-based analyses for strain comparisons. A total of 25 humans and 27 canines were sampled at multiple sites, yielding 47 and 45 isolates, respectively. Whole genome sequence analysis was performed. We detected mostly new sequence types (STs) and a high diversity. Strains carried few antimicrobial resistance genes and plasmids, albeit three MRSP strains were found that belonged to two internationally distributed STs. The virulence content did not provide insights toward a tendency to colonization of humans but supported that there may be differences in the surface proteins between carrier strains and those causing pyoderma. We identified 13 cases in which humans were infected with strains from the dog they owned.
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Affiliation(s)
- Sharianne Suepaul
- Department of Pathobiology, School of Veterinary Medicine, St. George’s University, True Blue, St. George’s FZ818, Grenada
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine 685509, Trinidad and Tobago;
| | - Marc Stegger
- Department of Bacteria, Parasites, and Fungi, Statens Serum Institut, 2300 Copenhagen, Denmark;
- Antimicrobial Resistance and Infectious Diseases Laboratory, Harry Butler Institute, Murdoch University, Perth, WA 6150, Australia
| | - Filip Boyen
- Department of Pathobiology, Pharmacology and Wildlife Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (F.B.); or (P.B.)
| | - Karla Georges
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine 685509, Trinidad and Tobago;
| | - Patrick Butaye
- Department of Pathobiology, Pharmacology and Wildlife Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (F.B.); or (P.B.)
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
- School of Veterinary Medicine, Ross University, Basseterre P.O. Box 334, Saint Kitts and Nevis
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47
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Zaghen F, Sora VM, Meroni G, Laterza G, Martino PA, Soggiu A, Bonizzi L, Zecconi A. Epidemiology of Antimicrobial Resistance Genes in Staphyloccocus aureus Isolates from a Public Database in a One Health Perspective-Sample Characteristics and Isolates' Sources. Antibiotics (Basel) 2023; 12:1225. [PMID: 37508321 PMCID: PMC10376612 DOI: 10.3390/antibiotics12071225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/20/2023] [Accepted: 07/23/2023] [Indexed: 07/30/2023] Open
Abstract
Staphylococcus aureus is considered one of the most widespread bacterial pathogens for both animals and humans, being the causative agent of various diseases like food poisoning, respiratory tract infections, nosocomial bacteremia, and surgical site and cardiovascular infections in humans, as well as clinical and subclinical mastitis, dermatitis, and suppurative infections in animals. Thanks to their genetic flexibility, several virulent and drug-resistant strains have evolved mainly due to horizontal gene transfer and insurgence of point mutations. Infections caused by the colonization of such strains are particularly problematic due to frequently occurring antibiotic resistance, particulary methicillin-resistant S. aureus (MRSA), and are characterized by increased mortality, morbidity, and hospitalization rates compared to those caused by methicillin-sensitive S. aureus (MSSA). S. aureus infections in humans and animals are a prime example of a disease that may be managed by a One Health strategy. In fact, S. aureus is a significant target for control efforts due to its zoonotic potential, the frequency of its illnesses in both humans and animals, and the threat posed by S. aureus antibiotic resistance globally. The results of an epidemiological analysis on a worldwide public database (NCBI Pathogen Detection Isolate Browser; NPDIB) of 35,026 S. aureus isolates were described. We considered the diffusion of antibiotic resistance genes (ARGs), in both human and animal setting, and the results may be considered alarming. The result of this study allowed us to identify the presence of clusters with specific ARG patterns, and that these clusters are associated with different sources of isolation (e.g., human, non-human).
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Affiliation(s)
- Francesca Zaghen
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
- Department of Clinical and Community Sciences, School of Medicine, University of Milan, Via Celoria 22, 20133 Milan, Italy
| | - Valerio Massimo Sora
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
- Department of Clinical and Community Sciences, School of Medicine, University of Milan, Via Celoria 22, 20133 Milan, Italy
| | - Gabriele Meroni
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
| | - Giulia Laterza
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
- Department of Clinical and Community Sciences, School of Medicine, University of Milan, Via Celoria 22, 20133 Milan, Italy
| | - Piera Anna Martino
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
| | - Alessio Soggiu
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
| | - Luigi Bonizzi
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
| | - Alfonso Zecconi
- Department of Biomedical, Surgical and Dental Sciences-One Health Unit, School of Medicine, University of Milan, Via Pascal 36, 20133 Milan, Italy
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48
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Abdulmanea AA, Alharbi NS, Somily AM, Khaled JM, Algahtani FH. The Prevalence of the Virulence Genes of Staphylococcus aureus in Sickle Cell Disease Patients at KSUMC, Riyadh, Saudi Arabia. Antibiotics (Basel) 2023; 12:1221. [PMID: 37508317 PMCID: PMC10416153 DOI: 10.3390/antibiotics12071221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Staphylococcus aureus in the blood of sickle cell disease (SCD) patients may result in a significant increase in morbidity and mortality. S. aureus strains contain various virulence characteristics, including the ability to create a variety of toxins and develop drug resistance. The current study sought to assess the prevalence of S. aureus in SCD patients and to identify the pathogen's virulence characteristics. Between 2017 and 2021, blood samples and data were collected at King Saud University Medical City (KSUMC) in Riyadh, Saudi Arabia. The Vitek system PCR and gene sequencing methods were used for identification, antibiotic resistance patterns, and genetic analysis. During the study period, 47 S. aureus blood isolates (methicillin-resistant S. aureus (MRSA) 41.6% and non-MRSA 58.4%) were isolated from 2406 SCD patients. The prevalence percentages of virulence genes (finbB, sdrC, sdrD, icaA, coa, nuc, hlg, hla, finbA, clfA, efb, pvl, agr, spa, seb, sea, sec, tst, and sed) among all the isolates from the SCD patients compared with non-SCD patients (control group) were as follows: (100% vs. 100%), (100% vs. 100%), (100% vs. 100%), (100% vs. 87.5%), (100% vs. 81.3%), (100% vs. 100%), (100% vs. 100%), (100% vs. 100%), (97.9% vs. 81.3%), (97.9% vs. 100%), (97.9% vs. 87.5%), (54.3% vs. 56.3%), (46.8% vs. 75%), (42.6% vs. 43.8%), (27.7% vs. 0%), (25.5% vs. 12.5%), (12.8% vs. 6.3%), (4.3% vs. 12.5%), and (4.3% vs. 0%). Regarding the resistance genes (plaZ, mecA, ermA, ermC, tetK, tetM, and ermB) of the S. aureus strains isolated from the SCD patients compared with non-SCD patients (control group), the prevalence percentages were as follows: (100% vs. 100%), (100% vs. 56.3%), (0% vs. 31.3%), (31.9% vs. 18.8%), (40.4% vs. 25%), (0% vs. 0%), and (0% vs. 0%). As for the antibiotic (ampicillin, penicillin, amoxicillin, cefazolin, imipenem, oxacillin, erythromycin, tetracycline, azithromycin, ciprofloxacin, moxifloxacin, and levofloxacin) resistance of the S. aureus strains isolated from the SCD patients compared with non-SCD patients (control group), the prevalence percentages were as follows: (100% vs. 100%), (97.9% vs. 100%), (72.3% vs. 25%), (68.1% vs. 37.5%), (68.1% vs. 25%), (66% vs. 25%), (36.2% vs. 18.8%), (23.4% vs. 12.5%), (19.1% vs. 12.5%), (17% vs. 12.5%), (14.9% vs. 25%), and (10.6% vs. 18.7%). This study concluded that several virulence genes were present in the S. aureus strains recovered from the SCD patients at KSUMC, with all the isolates containing the finbB, sdrC, sdrD, icaA, coa, nuc, hlg, and hla genes.
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Affiliation(s)
- Adel A. Abdulmanea
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (N.S.A.); (J.M.K.)
| | - Naiyf S. Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (N.S.A.); (J.M.K.)
| | - Ali M. Somily
- Department of Pathology, College of Medicine, King Saud University and King Saud University Medical City, P.O. Box 2925, Riyadh 11451, Saudi Arabia;
| | - Jamal M. Khaled
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (N.S.A.); (J.M.K.)
| | - Farjah H. Algahtani
- Department of Hematology, College of Medicine, King Saud University and King Saud University Medical City, P.O. Box 2925, Riyadh 11451, Saudi Arabia;
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49
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Wu J, Huang Y, Ding X, Kang L, Wang X, Li D, Cheng W, Liu G, Xue J, Ding S. CPA-Cas12a-based lateral flow strip for portable assay of Methicillin-resistant Staphylococcus aureus in clinical sample. J Nanobiotechnology 2023; 21:234. [PMID: 37481551 PMCID: PMC10362775 DOI: 10.1186/s12951-023-02002-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 07/13/2023] [Indexed: 07/24/2023] Open
Abstract
The rapid and accurate identification of methicillin-resistant Staphylococcus aureus at an early antibiotic therapy stage would be benefit to disease diagnosis and antibiotic selection. Herein, we integrated cross-priming amplification (CPA) and CRISPR/Cas 12a (designated as CPA-Cas 12a) systems to establish a sensitive and efficient lateral flow assay to detect methicillin-resistant Staphylococcus aureus. This assay relies on the CPA isothermal nucleic acid amplification strategy which can amplify the DNA extracted from Staphylococcus aureus and accompanying the indiscriminately trans-cleavage process of Cas 12a/CrRNA duplex after recognizing specific sequence. Taking the advantage of reporter and high turnover Cas 12a activity, a dramatic change in response was achieved to produce a significant increase in the analytical sensitivity. The signal conversion and output were realized using a lateral flow strip to achieve field-deployable detection. Furthermore, this bioassay was accommodated with a microfluidic device to realize automatically portable detection. This proposed assay completed within 30 min with the detection limit of 5 CFU mL-1, was verified by testing bacterial suspension and 202 clinical samples. Given the high sensitivity, specificity and efficiency, this colorimetric readout assay through strip could be further promoted to the clinical diagnosis, clinical medication of multidrug-resistant bacteria.
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Affiliation(s)
- Jiangling Wu
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Yu Huang
- Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Xiaojuan Ding
- Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Lina Kang
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Xiaoliang Wang
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Dandan Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Gang Liu
- Department of Critical Care Medicine, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China.
| | - Jianjiang Xue
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China.
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), college of laboratory medicine, Chongqing Medical University, Chongqing, 400016, China
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50
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Guo J, Pan Z, Fan L, Zhong Y, Pang R, Su Y. Effect of Three Different Amino Acids Plus Gentamicin Against Methicillin-Resistant Staphylococcus aureus. Infect Drug Resist 2023; 16:4741-4754. [PMID: 37496695 PMCID: PMC10366528 DOI: 10.2147/idr.s411658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/05/2023] [Indexed: 07/28/2023] Open
Abstract
Background The issue of methicillin-resistant Staphylococcus aureus (MRSA) resistant to many antibiotics and causing serious infectious diseases is a growing healthcare concern. Purpose In recent years, exogenous administration of metabolites in combination with antibiotics can re-sensitize resistant bacteria to antibiotics; however, their effects vary, and their underlying mechanism of action remains elusive. Methods We assessed the bactericidal effects of the three amino acids in combination with gentamicin in vitro and in vivo. Subsequently, we explored the role of these amino acids on the metabolomics of MRSA using Liquid chromatography-tandem mass spectrometry (LC-MS/MS). Furthermore, we performed the downstream analyses using MetaboAnalyst and Interactive Pathways Explorer. Results Exogenous threonine showed the best bactericidal efficacy with gentamicin, followed by glycine, wherein serine had no effect. Amino acid treatments mainly up-regulated the metabolites, increased the amino acid abundance, and significantly activated metabolisms; these effects were consistent with the bactericidal efficacy of the three amino acids. Most amino acids participated in the tricarboxylic acid cycle, and threonine supplementation increased the activities of citrate synthase, isocitrate dehydrogenase and α-ketoglutarate dehydrogenase, whereas glycine increased activities of citrate synthase and α-ketoglutarate dehydrogenase, and serine did not affect the activities of any of the three key enzymes. We identified 24 biomarkers in the three groups, among which glutamic acid and cysteine showed a gradient decrease and increase, respectively. Subsequent analyses revealed that glutamic acid but not cysteine promoted the bactericidal effect of gentamicin synergistically. Conclusion Threonine has the best synergistic effect in reversing bacterial resistance compared to glycine and serine. We show that different amino acids combined with an antibiotic mainly affect amino acid metabolism and act via different metabolic regulatory mechanisms, which could help develop effective strategies for tackling MRSA infections.
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Affiliation(s)
- Juan Guo
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Zhiyu Pan
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Lvyuan Fan
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Yilin Zhong
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Rui Pang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, People’s Republic of China
| | - Yubin Su
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, People’s Republic of China
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