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Gadaime NK, Haddadin RN, Shehabi AA, Omran IN. Antimicrobial resistance and carbapenemase dissemination in Pseudomonas aeruginosa isolates from Libyan hospitals: a call for surveillance and intervention. Libyan J Med 2024; 19:2344320. [PMID: 38643488 PMCID: PMC11034451 DOI: 10.1080/19932820.2024.2344320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/15/2024] [Indexed: 04/23/2024] Open
Abstract
Pseudomonas aeruginosa is a multidrug-resistant bacterium capable of forming biofilms. This study aimed to assess resistance of clinical isolates from Libyan hospitals to antipseudomonal antibiotics, the prevalence of selected extended-spectrum β-lactamases and carbapenemase genes among these isolates, and the microorganisms' capacity for alginate and biofilm production. Forty-five isolates were collected from four hospitals in Benghazi and Derna, Libya. Antimicrobial susceptibility was determined using agar disc diffusion. The presence of resistance genes (blaCTXM, blaTEM, blaSHV-1, blaGES-1, blaKPC, and blaNDM) was screened using PCR. Biofilm formation was quantified via the crystal violet assay, while alginate production was measured spectrophotometrically. Resistance to antipseudomonal antibiotics ranged from 48.9% to 75.6%. The most prevalent resistance gene was blaNDM (26.7%), followed by blaGES-1 (17.8%). Moreover, all isolates demonstrated varying degrees of biofilm-forming ability and alginate production. No statistically significant correlation was found between biofilm formation and alginate production. The dissemination of resistant genes in P. aeruginosa, particularly carbapenemases, is of great concern. This issue is compounded by the bacteria's biofilm-forming capability. Urgent intervention and continuous surveillance are imperative to prevent further deterioration and the catastrophic spread of resistance among these formidable bacteria.
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Affiliation(s)
- Nasrin K. Gadaime
- School of Medicine, The University of Jordan, Amman, Jordan
- Department of Lab Medicine, Faculty of Medical Technology-Derna, National Board for technical and Vocational Education, Derna, Libya
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Salama WH, Abd-Rabou AA, Bassuiny RI, El Hakim AE, Shahein YE. Exploration of antimicrobial and anticancer activities of L-amino acid oxidase from Egyptian Naja haje venom. Toxicon 2024; 242:107708. [PMID: 38574827 DOI: 10.1016/j.toxicon.2024.107708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 02/12/2024] [Accepted: 04/02/2024] [Indexed: 04/06/2024]
Abstract
Hepatocellular carcinoma and bacterial resistance are major health burdens nowadays. Thus, providing new therapies that overcome that resistance is of great interest, particularly those derived from nature rather than chemotherapeutics to avoid cytotoxicity on normal cells. Venomous animals are among the natural sources that assisted in the discovery of novel therapeutic regimens. L-amino acid oxidase Nh-LAAO (140 kDa), purified from Egyptian Naja haje venom by a successive two-step chromatography protocol, has an optimal pH and temperature of 8 and 37 °C. Under standard assay conditions, Nh-LAAO exhibited the highest specificity toward L-Arg, L-Met and L-Leu, with Km and Vmax values of 3.5 mM and 10.4 μmol/min/ml, respectively. Among the metal ions, Ca+2, Na+, and K+ ions are activators, whereas Fe+2 inhibited LAAO activity. PMSF and EDTA slightly inhibited the Nh-LAAO activity. In addition, Nh-LAAO showed antibacterial and antifungal activities, particularly against Gentamicin-resistant P. aeruginosa and E. coli strains with MIC of 18 ± 2 μg/ml, as well as F. proliferatum and A. parasiticus among the selected human pathogenic strains. Furthermore, Nh-LAAO exhibited anti-proliferative activity against cancer HepG2 and Huh7 cells with IC50 of 79.37 and 60.11 μg/ml, respectively, with no detectable effect on normal WI-38 cells. Consequently, the apoptosis % of the HepG2 and Huh7 cells were 12 ± 1 and 34.5 ± 2.5 %, respectively, upon Nh-LAAO treatment. Further, the Nh-LAAO arrested the HepG2 and Huh7 cell cycles in the G0/G1 phase. Thus, the powerful selective cytotoxicity of L-amino acid oxidase opens up the possibility as a good candidate for clinical cancer therapy.
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Affiliation(s)
- Walaa H Salama
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt.
| | - Ahmed A Abd-Rabou
- HormonesDepartment, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Roqaya I Bassuiny
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Amr E El Hakim
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Yasser E Shahein
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
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Malik M, Das S, Chakraborty P, Paul P, Roy R, Das Gupta A, Sarkar S, Chatterjee S, Maity A, Dasgupta M, Sarker RK, Tribedi P. Application of cuminaldehyde and ciprofloxacin for the effective control of biofilm assembly of Pseudomonas aeruginosa: A combinatorial study. Microb Pathog 2024; 190:106624. [PMID: 38492828 DOI: 10.1016/j.micpath.2024.106624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/28/2024] [Accepted: 03/14/2024] [Indexed: 03/18/2024]
Abstract
Pseudomonas aeruginosa is widely associated with biofilm-mediated antibiotic resistant chronic and acute infections which constitute a persistent healthcare challenges. Addressing this threat requires exploration of novel therapeutic strategies involving the combination of natural compounds and conventional antibiotics. Hence, our study has focused on two compounds; cuminaldehyde and ciprofloxacin, which were strategically combined to target the biofilm challenge of P. aeruginosa. The minimum inhibitory concentration (MIC) of cuminaldehyde and ciprofloxacin was found to be 400 μg/mL and 0.4 μg/mL, respectively. Moreover, the fractional inhibitory concentration index (FICI = 0.62) indicated an additive interaction prevailed between cuminaldehyde and ciprofloxacin. Subsequently, sub-MIC doses of cuminaldehyde (25 μg/mL) and ciprofloxacin (0.05 μg/mL) were selected for an array of antibiofilm assays which confirmed their biofilm inhibitory potential without exhibiting any antimicrobial activity. Furthermore, selected doses of the mentioned compounds could manage biofilm on catheter surface by inhibiting and disintegrating existing biofilm. Additionally, the test combination of the mentioned compounds reduced virulence factors secretion, accumulated reactive oxygen species and increased cell-membrane permeability. Thus, the combination of cuminaldehyde and ciprofloxacin demonstrates potential in combating biofilm-associated Pseudomonal threats.
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Affiliation(s)
- Moumita Malik
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Sharmistha Das
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Poulomi Chakraborty
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Payel Paul
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Ritwik Roy
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Anirban Das Gupta
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Sarita Sarkar
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Sudipta Chatterjee
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Alakesh Maity
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Monikankana Dasgupta
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Ranojit Kumar Sarker
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Prosun Tribedi
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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Omer SN, Shanmugam V. Exploring the antibiofilm and toxicity of tin oxide nanoparticles: Insights from in vitro and in vivo investigations. Microb Pathog 2024; 190:106639. [PMID: 38616002 DOI: 10.1016/j.micpath.2024.106639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND INFORMATION The advancement of biological-mediated nanoscience towards higher levels and novel benchmarks is readily apparent, owing to the use of non-toxic synthesis processes and the incorporation of various additional benefits. This study aimed to synthesize stable tin oxide nanoparticles (SnO2-NPs) using S. rhizophila as a mediator. METHODS The nanoparticles that were created by biosynthesis was examined using several analytical techniques, including Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), UV-visible (UV-vis) spectroscopy, and energy dispersive X-ray spectroscopy (EDS). RESULTS The results obtained from the characterization techniques suggest that S. rhizophila effectively catalyzed the reduction of SnCl2 to SnO2-NPs duration of 90 min at ambient temperature with the ƛmax of 328 nm. The size of the nano crystallite formations was measured to be 23 nm. The present study investigates nanoscale applications' antibacterial efficacy against four bacterial strains, including Klebsiella Sp, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. The observed zone of inhibition for the nanoparticles (NPs) varied from 10 to 25 mm. The research findings demonstrate that the nanoparticles (NPs) are effective as antibacterial, phytotoxic, and cytotoxic agents.
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Affiliation(s)
- Soghra Nashath Omer
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, TN, India
| | - Venkatkumar Shanmugam
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, TN, India.
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Farouk F, Shebl RI. LC-MS/MS determination of pyocyanin-N-acetyl cysteine adduct: application for understanding Pseudomonas aeruginosa virulence factor neutralization. ANAL SCI 2024; 40:891-905. [PMID: 38472735 DOI: 10.1007/s44211-024-00531-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 02/06/2024] [Indexed: 03/14/2024]
Abstract
Combating Pseudomonas aeruginosa infection is challenging. It secretes pyocyanin (PCN) pigment that contributes to its virulence. Neutralizing PCN via reaction with thiol-containing compounds may represent a potential therapeutic option. This study investigates the neutralization reaction between PCN and N-acetyl cysteine (NAC) for bacterial inhibition and explores its mechanism of action. The neutralization adduct (PCN-NAC) was synthesized by reacting the purified PCN and NAC. The adduct was analyzed and its structure was elucidated. LC-MS/MS method was developed for the determination of PCN-NAC in P. aeruginosa cultures post-treatment with NAC (0-5 mg/mL). The corresponding anti-bacterial potential was estimated and compared to nanoparticles (NPs) alone and under stress conditions. In silico studies were performed to support explaining the mechanism of action. Results revealed that PCN-NAC was exclusively detected in NAC-treated cultures in a concentration-dependent manner. PCN-NAC concentration (230-915 µg/mL) was directly proportional to the reduction in the bacterial viable count (28.3% ± 7.1-87.5% ± 5.9) and outperformed all tested NPs, where chitosan NPs induced 56.9% ± 7.9 inhibition, followed by zinc NPs (49.4% ± 0.9) and gold NPs (17.8% ± 7.5) even post-exposure to different stress conditions. A concomitant reduction in PCN concentration was detected. In silico studies revealed possible interactions between key bacterial proteins and PCN-NAC rather than the NAC itself. These results pose NAC as a potential choice for the management of P. aeruginosa infection, where it neutralizes PCN via the formation of PCN-NAC adduct.
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Affiliation(s)
- Faten Farouk
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt.
| | - Rania Ibrahim Shebl
- Microbiology and Immunology Department, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
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Zhang Y, Zhang D, Zhao W, Li H, Lu Z, Guo B, Meng X, Zhou X, Yang Y. Design, Synthesis, and Biological Evaluation of Novel Arylomycins against Multidrug-Resistant Gram-Negative Bacteria. J Med Chem 2024; 67:6585-6609. [PMID: 38598362 DOI: 10.1021/acs.jmedchem.4c00018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
G0775, an arylomycin-type SPase I inhibitor that is being evaluated in a preclinical study, exhibited potent antibacterial activities against some Gram-negative bacteria but meanwhile suffered defects such as a narrow antibacterial spectrum and poor pharmacokinetic properties. Herein, systematic structural modifications were carried out, including optimization of the macrocyclic skeleton, warheads, and lipophilic regions. The optimization culminated in the discovery of 138f, which showed more potent activity and a broader spectrum against clinically isolated carbapenem-resistant Gram-negative bacteria, especially against Acinetobacter baumannii and Pseudomonas aeruginosa. 162, the free amine of 138f, exhibited an excellent pharmacokinetic profile in rats. In a neutropenic mouse thigh model of infection with multidrug-resistant P. aeruginosa, the potent in vivo antibacterial efficacy of 162 was confirmed and superior to that of G0775 (3.5-log decrease vs 1.1-log decrease in colony-forming unit (CFU)). These results support 162 as a potential antimicrobial agent for further research.
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Affiliation(s)
- Yinyong Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan China
- Key Laboratory of Advanced Technologies of Material, Minister of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenhao Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongyuan Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhengyu Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Meng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianli Zhou
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan China
- Key Laboratory of Advanced Technologies of Material, Minister of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan China
- Affiliated Hospital, The Third People's Hospital of Chengdu, Southwest Jiaotong University, Chengdu 610000, Sichuan, China
| | - Yushe Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing 100049, China
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Manohar P, Loh B, Nachimuthu R, Leptihn S. Phage-antibiotic combinations to control Pseudomonas aeruginosa-Candida two-species biofilms. Sci Rep 2024; 14:9354. [PMID: 38653744 DOI: 10.1038/s41598-024-59444-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 04/10/2024] [Indexed: 04/25/2024] Open
Abstract
Phage-antibiotic combinations to treat bacterial infections are gaining increased attention due to the synergistic effects often observed when applying both components together. Most studies however focus on a single pathogen, although in many clinical cases multiple species are present at the site of infection. The aim of this study was to investigate the anti-biofilm activity of phage-antibiotic/antifungal combinations on single- and dual-species biofilms formed by P. aeruginosa and the fungal pathogen Candida albicans. The Pseudomonas phage Motto in combination with ciprofloxacin had significant anti-biofilm activity. We then compared biofilms formed by P. aeruginosa alone with the dual-species biofilms formed by bacteria and C. albicans. Here, we found that the phage together with the antifungal fluconazole was active against 6-h-old dual-species biofilms but showed only negligible activity against 24-h-old biofilms. This study lays the first foundation for potential therapeutic approaches to treat co-infections caused by bacteria and fungi using phage-antibiotic combinations.
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Affiliation(s)
- Prasanth Manohar
- School of Bioscience and Technology, Vellore Institute of Technology (VIT), Vellore, India
- Center for Phage Technology, Department of Biochemistry and Biophysics, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843, USA
| | - Belinda Loh
- Department of Vaccines and Infection Models, Fraunhofer Institute for Cell Therapy and Immunology (IZI), Perlickstr. 1, 04103, Leipzig, Germany
| | - Ramesh Nachimuthu
- School of Bioscience and Technology, Vellore Institute of Technology (VIT), Vellore, India
| | - Sebastian Leptihn
- Department of Vaccines and Infection Models, Fraunhofer Institute for Cell Therapy and Immunology (IZI), Perlickstr. 1, 04103, Leipzig, Germany.
- Department of Biochemistry, Health and Medical University, Erfurt, Anger 66/73, 99084, Erfurt, Germany.
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark.
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Dos Santos LA, Cayô R, Valiatti TB, Gales AC, de Araújo LFB, Rodrigues FM, de Carvalho TS, Vaz MAB, Campanharo M. Biodiversity of carbapenem-resistant bacteria in clinical samples from the Southwest Amazon region (Rondônia/Brazil). Sci Rep 2024; 14:9383. [PMID: 38654061 DOI: 10.1038/s41598-024-59733-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
Brazil is recognized for its biodiversity and the genetic variability of its organisms. This genetic variability becomes even more valuable when it is properly documented and accessible. Understanding bacterial diversity through molecular characterization is necessary as it can improve patient treatment, reduce the length of hospital stays and the selection of resistant bacteria, and generate data for health and epidemiological surveillance. In this sense, in this study, we aimed to understand the biodiversity and molecular epidemiology of carbapenem-resistant bacteria in clinical samples recovered in the state of Rondônia, located in the Southwest Amazon region. Retrospective data from the Central Public Health Laboratories (LACEN/RO) between 2018 and 2021 were analysed using the Laboratory Environment Manager Platform (GAL). Seventy-two species with carbapenem resistance profiles were identified, of which 25 species carried at least one gene encoding carbapenemases of classes A (blaKPC-like), B (blaNDM-like, blaSPM-like or blaVIM-like) and D (blaOXA-23-like, blaOXA-24-like, blaOXA-48-like, blaOXA-58-like or blaOXA-143-like), among which we will highlight Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, Serratia marcescens, and Providencia spp. With these results, we hope to contribute to the field by providing epidemiological molecular data for state surveillance on bacterial resistance and assisting in public policy decision-making.
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Affiliation(s)
- Levy Assis Dos Santos
- Federal University of Rondônia Foundation (UNIR), Postgraduate Program in Conservation and Use of Natural Resources (PPGReN), Porto Velho, RO, Brazil.
- Central Public Health Laboratory of Rondônia (LACEN/RO), Medical Biology Center, Porto Velho, RO, Brazil.
| | - Rodrigo Cayô
- Laboratory ALERTA, Department of Medicine, Paulista School of Medicine (EPM), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
- Laboratory of Bacteriology and Immunology (LIB), Department of Biological Sciences (DCB), Institute of Environmental, Chemical and Pharmaceutical Sciences (ICAQF), Federal University of São Paulo (UNIFESP), Diadema, SP, Brazil
| | - Tiago Barcelos Valiatti
- Laboratory ALERTA, Department of Medicine, Paulista School of Medicine (EPM), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Ana Cristina Gales
- Laboratory ALERTA, Department of Medicine, Paulista School of Medicine (EPM), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Larissa Fatarelli Bento de Araújo
- Federal University of Rondônia Foundation (UNIR), Postgraduate Program in Conservation and Use of Natural Resources (PPGReN), Porto Velho, RO, Brazil
| | - Fernando Marques Rodrigues
- Central Public Health Laboratory of Rondônia (LACEN/RO), Medical Biology Center, Porto Velho, RO, Brazil
| | - Tatiane Silva de Carvalho
- Central Public Health Laboratory of Rondônia (LACEN/RO), Medical Biology Center, Porto Velho, RO, Brazil
| | - Marcos André Braz Vaz
- Department of Informatics and Statistics, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Marcela Campanharo
- Federal University of Rondônia Foundation (UNIR), Postgraduate Program in Conservation and Use of Natural Resources (PPGReN), Porto Velho, RO, Brazil
- Department of Agricultural and Biological Sciences (DCAB), Federal University of Espirito Santo, São Mateus, ES, Brazil
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Khan MH, Unnikrishnan S, Ramalingam K. Antipathogenic Efficacy of Biogenic Silver Nanoparticles and Antibiofilm Activities Against Multi-drug-Resistant ESKAPE Pathogens. Appl Biochem Biotechnol 2024; 196:2031-2052. [PMID: 37462813 DOI: 10.1007/s12010-023-04630-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2023] [Indexed: 04/23/2024]
Abstract
The silver nanoparticles (AgNPs) were produced by employing a biogenic loom and tested for antipathogenic assets against multi-drug-resistant (MDR) ESKAPE bacteria. Biogenically synthesized AgNPs were characterized adopting various high-throughput techniques such as UHRTEM, SEM with EDX, DLS, TGA-DTA, and XRD and spectroscopic analysis showed polydispersion of nanoparticles. In this context, AgNPs with the attribute of spherical-shaped nanoparticles with an average size of 26 nm were successfully synthesized utilizing bacterial supernatant. The antipathogenic activities of AgNPs were assessed against 11 strains of MDR ESKAPE bacteria including Enterococcus faecium; methicillin-resistant Staphylococcus aureus; Klebsiella pneumonia; Acinetobacter baumannii; Pseudomonas aeruginosa; Enterobacter aerogenes; and Enterobacter species. The exposure of biogenic AgNPs in a well diffusion assay showed all the growth inhibitions of ESKAPE bacteria at 200 μg/ml after 18 h of incubation. Growth kinetics demonstrated maximum killing at 60 μg/ml after 4 h of completion. The highest biofilm depletions were found at 100 μg/ml in adhesion assay. Live/dead assays showed effective killing of the ESKAPE bacteria at 10 μg/ml in pre-existing biofilms. The effective inhibitory concentrations of AgNPs were investigated ranging from 10 to 200 μg/ml. The selected pathogens found sensitive to AgNPs are statistically significant (P < 0.05) than that of cefotaxime/AgNO3. Consequently, a broad spectrum of antimicrobial potentials of AgNPs can be alternative to conventional antimicrobial agents for future medicine.
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Affiliation(s)
- Mohd Hashim Khan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, GST Road, Vandalur, Chennai, Tamil Nadu, 600 048, India
| | - Sneha Unnikrishnan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, GST Road, Vandalur, Chennai, Tamil Nadu, 600 048, India
| | - Karthikeyan Ramalingam
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, GST Road, Vandalur, Chennai, Tamil Nadu, 600 048, India.
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Wu KJY, Tresco BIC, Ramkissoon A, Aleksandrova EV, Syroegin EA, See DNY, Liow P, Dittemore GA, Yu M, Testolin G, Mitcheltree MJ, Liu RY, Svetlov MS, Polikanov YS, Myers AG. An antibiotic preorganized for ribosomal binding overcomes antimicrobial resistance. Science 2024; 383:721-726. [PMID: 38359125 DOI: 10.1126/science.adk8013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024]
Abstract
We report the design conception, chemical synthesis, and microbiological evaluation of the bridged macrobicyclic antibiotic cresomycin (CRM), which overcomes evolutionarily diverse forms of antimicrobial resistance that render modern antibiotics ineffective. CRM exhibits in vitro and in vivo efficacy against both Gram-positive and Gram-negative bacteria, including multidrug-resistant strains of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. We show that CRM is highly preorganized for ribosomal binding by determining its density functional theory-calculated, solution-state, solid-state, and (wild-type) ribosome-bound structures, which all align identically within the macrobicyclic subunits. Lastly, we report two additional x-ray crystal structures of CRM in complex with bacterial ribosomes separately modified by the ribosomal RNA methylases, chloramphenicol-florfenicol resistance (Cfr) and erythromycin-resistance ribosomal RNA methylase (Erm), revealing concessive adjustments by the target and antibiotic that permit CRM to maintain binding where other antibiotics fail.
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Affiliation(s)
- Kelvin J Y Wu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ben I C Tresco
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Antonio Ramkissoon
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Elena V Aleksandrova
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Egor A Syroegin
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Dominic N Y See
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Priscilla Liow
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Georgia A Dittemore
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Meiyi Yu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Giambattista Testolin
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Matthew J Mitcheltree
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Richard Y Liu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Maxim S Svetlov
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Center for Biomolecular Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Yury S Polikanov
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Center for Biomolecular Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Andrew G Myers
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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11
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Antonelli A, Coppi M, Bonaiuto C, Giovacchini N, Vaggelli G, Farese A, Pollini S, Rossolini GM. Novel resistance ICEs carrying the blaFIM-1 metallo-β-lactamase gene from an ST235 Pseudomonas aeruginosa sublineage. Antimicrob Agents Chemother 2024; 68:e0120523. [PMID: 38206043 PMCID: PMC10848763 DOI: 10.1128/aac.01205-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024] Open
Abstract
FIM-1 is an acquired metallo-β-lactamase identified in a multidrug-resistant Pseudomonas aeruginosa (index strain FI-14/157) of clinical origin isolated in 2007 in Florence, Italy. Here we report on a second case of infection by FIM-1-positive P. aeruginosa (FI-17645), which occurred in 2020 in the same hospital. Both FIM-1-positive strains exhibited resistance to all anti-Pseudomonas antibiotics except colistin and cefiderocol. Comparative genomic characterization revealed that the two FIM-positive strains were closely related [core genome difference, 16 single nucleotide polymorphisms (SNPs)], suggesting a local circulation of similar strains. In the FI-14/157 index strain, the blaFIM-1 gene was associated with an ISCR19-like element that likely contributed to its capture downstream an integron platform inserted aboard a Tn21-like transposon, named Tn7703.1, which was associated with a large integrative and conjugative element (ICE) named ICE7705.1, integrated into an att site located within the 3'-end of tRNAGly CCC gene of the P. aeruginosa chromosome. In strain FI-17645, blaFIM-1 was associated with a closely related ICE, named ICE7705.2, integrated in the same chromosomal site. Similar ICE platforms, lacking the blaFIM-1-containing region, were detected in other ST235 P. aeruginosa strains from different geographic areas, suggesting a common ancestry and underscoring the role of these elements in the dissemination of resistance genes in P. aeruginosa. Sequence database mining revealed two draft P. aeruginosa genomes, one from Italy and one from the USA (both isolated in 2012), including a contig with blaFIM-1, suggesting that this resistance gene could have a broader distribution than originally anticipated.
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Affiliation(s)
- Alberto Antonelli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Marco Coppi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Chiara Bonaiuto
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Nicla Giovacchini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Guendalina Vaggelli
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Alberto Farese
- Infectious and Tropical Diseases Unit, Florence Careggi University Hospital, Florence, Italy
| | - Simona Pollini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Gian Maria Rossolini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
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12
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Geddes EJ, Gugger MK, Garcia A, Chavez MG, Lee MR, Perlmutter SJ, Bieniossek C, Guasch L, Hergenrother PJ. Porin-independent accumulation in Pseudomonas enables antibiotic discovery. Nature 2023; 624:145-153. [PMID: 37993720 DOI: 10.1038/s41586-023-06760-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/18/2023] [Indexed: 11/24/2023]
Abstract
Gram-negative antibiotic development has been hindered by a poor understanding of the types of compounds that can accumulate within these bacteria1,2. The presence of efflux pumps and substrate-specific outer-membrane porins in Pseudomonas aeruginosa renders this pathogen particularly challenging3. As a result, there are few antibiotic options for P. aeruginosa infections4 and its many porins have made the prospect of discovering general accumulation guidelines seem unlikely5. Here we assess the whole-cell accumulation of 345 diverse compounds in P. aeruginosa and Escherichia coli. Although certain positively charged compounds permeate both bacterial species, P. aeruginosa is more restrictive compared to E. coli. Computational analysis identified distinct physicochemical properties of small molecules that specifically correlate with P. aeruginosa accumulation, such as formal charge, positive polar surface area and hydrogen bond donor surface area. Mode of uptake studies revealed that most small molecules permeate P. aeruginosa using a porin-independent pathway, thus enabling discovery of general P. aeruginosa accumulation trends with important implications for future antibiotic development. Retrospective antibiotic examples confirmed these trends and these discoveries were then applied to expand the spectrum of activity of a gram-positive-only antibiotic, fusidic acid, into a version that demonstrates a dramatic improvement in antibacterial activity against P. aeruginosa. We anticipate that these discoveries will facilitate the design and development of high-permeating antipseudomonals.
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Affiliation(s)
- Emily J Geddes
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Morgan K Gugger
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Alfredo Garcia
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Martin Garcia Chavez
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Myung Ryul Lee
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Sarah J Perlmutter
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Christoph Bieniossek
- Roche Pharma Research and Early Development, Innovation Center Basel, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Laura Guasch
- Roche Pharma Research and Early Development, Innovation Center Basel, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Paul J Hergenrother
- Department of Chemistry and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA.
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13
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Simonis A, Kreer C, Albus A, Rox K, Yuan B, Holzmann D, Wilms JA, Zuber S, Kottege L, Winter S, Meyer M, Schmitt K, Gruell H, Theobald SJ, Hellmann AM, Meyer C, Ercanoglu MS, Cramer N, Munder A, Hallek M, Fätkenheuer G, Koch M, Seifert H, Rietschel E, Marlovits TC, van Koningsbruggen-Rietschel S, Klein F, Rybniker J. Discovery of highly neutralizing human antibodies targeting Pseudomonas aeruginosa. Cell 2023; 186:5098-5113.e19. [PMID: 37918395 DOI: 10.1016/j.cell.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/17/2023] [Accepted: 10/02/2023] [Indexed: 11/04/2023]
Abstract
Drug-resistant Pseudomonas aeruginosa (PA) poses an emerging threat to human health with urgent need for alternative therapeutic approaches. Here, we deciphered the B cell and antibody response to the virulence-associated type III secretion system (T3SS) in a cohort of patients chronically infected with PA. Single-cell analytics revealed a diverse B cell receptor repertoire directed against the T3SS needle-tip protein PcrV, enabling the production of monoclonal antibodies (mAbs) abrogating T3SS-mediated cytotoxicity. Mechanistic studies involving cryoelectron microscopy identified a surface-exposed C-terminal PcrV epitope as the target of highly neutralizing mAbs with broad activity against drug-resistant PA isolates. These anti-PcrV mAbs were as effective as treatment with conventional antibiotics in vivo. Our study reveals that chronically infected patients represent a source of neutralizing antibodies, which can be exploited as therapeutics against PA.
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Affiliation(s)
- Alexander Simonis
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, 50937 Cologne, Germany.
| | - Christoph Kreer
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Alexandra Albus
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Katharina Rox
- Department of Chemical Biology, Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig, Germany; German Center for Infection Research (DZIF), partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Biao Yuan
- Institute of Structural and Systems Biology, University Medical Center Hamburg-Eppendorf (UKE), 22607 Hamburg, Germany; Centre for Structural Systems Biology (CSSB), 22607 Hamburg, Germany; Deutsches Elektronen-Synchrotron Zentrum (DESY), 22607 Hamburg, Germany
| | - Dmitriy Holzmann
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Joana A Wilms
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Sylvia Zuber
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Lisa Kottege
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Sandra Winter
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Meike Meyer
- CF Centre, Pediatric Pulmonology and Allergology, University Children's Hospital Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Centre for Rare Diseases, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
| | - Kristin Schmitt
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Henning Gruell
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Sebastian J Theobald
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Anna-Maria Hellmann
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; Department of Experimental Pediatric Oncology, University Children's Hospital Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
| | - Christina Meyer
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Meryem Seda Ercanoglu
- Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Nina Cramer
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, 30625 Hannover, Germany
| | - Antje Munder
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, 30625 Hannover, Germany; Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), German Center for Lung Research, 30625 Hannover, Germany
| | - Michael Hallek
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Gerd Fätkenheuer
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, 50937 Cologne, Germany
| | - Manuel Koch
- Institute for Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Harald Seifert
- German Center for Infection Research (DZIF), partner site Bonn-Cologne, 50937 Cologne, Germany; Institute for Medical Microbiology, Immunology and Hygiene, Faculty of Medicine and University Hospital of Cologne, University of Cologne, 50935 Cologne, Germany
| | - Ernst Rietschel
- CF Centre, Pediatric Pulmonology and Allergology, University Children's Hospital Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Centre for Rare Diseases, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
| | - Thomas C Marlovits
- Institute of Structural and Systems Biology, University Medical Center Hamburg-Eppendorf (UKE), 22607 Hamburg, Germany; Centre for Structural Systems Biology (CSSB), 22607 Hamburg, Germany; Deutsches Elektronen-Synchrotron Zentrum (DESY), 22607 Hamburg, Germany
| | - Silke van Koningsbruggen-Rietschel
- CF Centre, Pediatric Pulmonology and Allergology, University Children's Hospital Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Centre for Rare Diseases, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
| | - Florian Klein
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, 50937 Cologne, Germany; Laboratory of Experimental Immunology, Institute of Virology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Jan Rybniker
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, 50937 Cologne, Germany.
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14
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Shakerimoghaddam A, Moghaddam AD, Barghchi B, Pisheh Sanani MG, Azami P, Kalmishi A, Sabeghi P, Motavalli F, Khomartash MS, Mousavi SH, Nikmanesh Y. Prevalence of Pseudomonas aeruginosa and its antibiotic resistance in patients who have received Hematopoietic Stem-Cell Transplantation; A globally Systematic Review. Microb Pathog 2023; 184:106368. [PMID: 37769854 DOI: 10.1016/j.micpath.2023.106368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023]
Abstract
Gram-negative bacteria are infectious and life-threatening agents after hematopoietic stem cell transplantation (HSCT). So, this study aimed to investigate the prevalence of Pseudomonas aeruginosa and its antibiotic resistance in patients who have received Hematopoietic Stem-Cell Transplantation through a systematic review. The systematic search was done with key words; Pseudomonas aeruginosa, hematopoietic stem cell transplantation from 2000 to the end of July 2023 in Google Scholar and PubMed/Medline, Scopus, and Web of Science. Twelve studies were able to include our study. Quality assessment of studies was done by Appraisal tool for Cross-Sectional Studies. The most of the included studies were conducted as allo-HSCT. Infections such as respiratory infection, urinary infection and bacteremia have occurred. The rate of prevalence with P. aeruginosa has varied between 3 and 100%. The average age of the participants was between 1 and 74 years. The rate of prevalence of P. aeruginosa resistant to several drugs has been reported to be variable, ranging from 20 to 100%. The highest antibiotic resistance was reported against cefotetan (100%), and the lowest was related to tobramycin (1.8%) followed by amikacin, levofloxacin and ciprofloxacin with the prevalence of 16.6%. Our findings showed a high prevalence and antibiotic resistance rate of P. aeruginosa in Hematopoietic stem cell transplantation. Therefore, more serious health measures should be taken in patients after transplantation.
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Affiliation(s)
- Ali Shakerimoghaddam
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Arasb Dabbagh Moghaddam
- Infectious Diseases Research Center, Aja University of Medical Sciences, Tehran, Iran; Department of Public Health & Nutrition, Aja University of Medical Sciences, Tehran, Iran
| | - Bita Barghchi
- Medical School, Islamic Azad University, Tehran, Branch, Tehran, Iran
| | | | - Pouria Azami
- Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abolfazl Kalmishi
- Department of Internal and Surgical Nursing Faculty of Nursing and Midwifery, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Paniz Sabeghi
- Medical School, Shiraz University of Medical Sciences, Shiraz Branch, Shiraz, Iran
| | - Farhad Motavalli
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran, Iran
| | | | - Seyyed Hossein Mousavi
- Department of Cardiology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Yousef Nikmanesh
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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15
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Deroche L, Aranzana-Climent V, Rozenholc A, Prouvensier L, Darnaud L, Grégoire N, Marchand S, Ploy MC, François B, Couet W, Barraud O, Buyck JM. Characterization of Pseudomonas aeruginosa resistance to ceftolozane-tazobactam due to ampC and/or ampD mutations observed during treatment using semi-mechanistic PKPD modeling. Antimicrob Agents Chemother 2023; 67:e0048023. [PMID: 37695298 PMCID: PMC10583683 DOI: 10.1128/aac.00480-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/17/2023] [Indexed: 09/12/2023] Open
Abstract
A double ampC (AmpCG183D) and ampD (AmpDH157Y) genes mutations have been identified by whole genome sequencing in a Pseudomonas aeruginosa (PaS) that became resistant (PaR) in a patient treated by ceftolozane/tazobactam (C/T). To precisely characterize the respective contributions of these mutations on the decreased susceptibility to C/T and on the parallel increased susceptibility to imipenem (IMI), mutants were generated by homologous recombination in PAO1 reference strain (PAO1- AmpCG183D, PAO1-AmpDH157Y, PAO1-AmpCG183D/AmpDH157Y) and in PaR (PaR-AmpCPaS/AmpDPaS). Sequential time-kill curve experiments were conducted on all strains and analyzed by semi-mechanistic PKPD modeling. A PKPD model with adaptation successfully described the data, allowing discrimination between initial and time-related (adaptive resistance) effects of mutations. With PAO1 and mutant-derived strains, initial EC50 values increased by 1.4, 4.1, and 29-fold after AmpCG183D , AmpDH157Y and AmpCG183D/AmpDH157Y mutations, respectively. EC50 values were increased by 320, 12.4, and 55-fold at the end of the 2 nd experiment. EC50 of PAO1-AmpCG183D/AmpDH157Y was higher than that of single mutants at any time of the experiments. Within the PaR clinical background, reversal of AmpCG183D, and AmpDH157Y mutations led to an important decrease of EC50 value, from 80.5 mg/L to 6.77 mg/L for PaR and PaR-AmpCPaS/AmpDPaS, respectively. The effect of mutations on IMI susceptibility mainly showed that the AmpCG183D mutation prevented the emergence of adaptive resistance. The model successfully described the separate and combined effect of AmpCG183D and AmpDH157Y mutations against C/T and IMI, allowing discrimination and quantification of the initial and time-related effects of mutations. This method could be reproduced in clinical strains to decipher complex resistance mechanisms.
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Affiliation(s)
- Luc Deroche
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
- CHU de Poitiers, Département des agents infectieux, Poitiers, France
- Université de Limoges, Inserm U1092, Limoges, France
| | | | | | - Laure Prouvensier
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
- CHU de Poitiers, Laboratoire de Toxicologie et de Pharmacocinétique, Poitiers, France
| | - Léa Darnaud
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
| | - Nicolas Grégoire
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
- CHU de Poitiers, Laboratoire de Toxicologie et de Pharmacocinétique, Poitiers, France
| | - Sandrine Marchand
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
- CHU de Poitiers, Laboratoire de Toxicologie et de Pharmacocinétique, Poitiers, France
| | - Marie-Cécile Ploy
- Université de Limoges, Inserm U1092, Limoges, France
- CHU de Limoges, Laboratoire de Bactériologie-Virologie-Hygiène, Limoges, France
| | - Bruno François
- Université de Limoges, Inserm U1092, Limoges, France
- CHU Limoges, Service de Réanimation Polyvalente, Limoges, France
- Inserm CIC 1435, CHU Limoges, Limoges, France
| | - William Couet
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
- CHU de Poitiers, Laboratoire de Toxicologie et de Pharmacocinétique, Poitiers, France
| | - Olivier Barraud
- Université de Limoges, Inserm U1092, Limoges, France
- CHU de Limoges, Laboratoire de Bactériologie-Virologie-Hygiène, Limoges, France
- Inserm CIC 1435, CHU Limoges, Limoges, France
| | - Julien M. Buyck
- Université de Poitiers, PHAR2, Inserm U1070, Poitiers, France
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16
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Yang S, Duncan GA. Synthetic mucus biomaterials for antimicrobial peptide delivery. J Biomed Mater Res A 2023; 111:1616-1626. [PMID: 37199137 PMCID: PMC10524183 DOI: 10.1002/jbm.a.37559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/25/2023] [Accepted: 05/08/2023] [Indexed: 05/19/2023]
Abstract
Despite the promise of antimicrobial peptides (AMPs) as treatments for antibiotic-resistant infections, their therapeutic efficacy is limited due to the rapid degradation and low bioavailability of AMPs. To address this, we have developed and characterized a synthetic mucus (SM) biomaterial capable of delivering LL37 AMPs and enhancing their therapeutic effect. LL37 is an AMP that exhibits a wide range of antimicrobial activity against bacteria, including Pseudomonas aeruginosa. LL37 loaded SM hydrogels demonstrated controlled release with 70%-95% of loaded LL37 over 8 h due to charge-mediated interactions between mucins and LL37 AMPs. Compared to treatment with LL37 alone where antimicrobial activity was reduced after 3 h, LL37-SM hydrogels inhibited P. aeruginosa (PAO1) growth over 12 h. LL37-SM hydrogel treatment reduced PAO1 viability over 6 h whereas a rebound in bacterial growth was observed when treated with LL37 only. These data demonstrate LL37-SM hydrogels enhance antimicrobial activity by preserving LL37 AMP activity and bioavailability. Overall, this work establishes SM biomaterials as a platform for enhanced AMP delivery for antimicrobial applications.
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Affiliation(s)
- Sydney Yang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Gregg A Duncan
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
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17
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Hamid R, Adam S, Lacour A, Monjas L, Köhnke J, Hirsch AKH. 1-deoxy-D-xylulose-5-phosphate synthase from Pseudomonas aeruginosa and Klebsiella pneumoniae reveals conformational changes upon cofactor binding. J Biol Chem 2023; 299:105152. [PMID: 37567475 PMCID: PMC10504544 DOI: 10.1016/j.jbc.2023.105152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
The ESKAPE bacteria are the six highly virulent and antibiotic-resistant pathogens that require the most urgent attention for the development of novel antibiotics. Detailed knowledge of target proteins specific to bacteria is essential to develop novel treatment options. The methylerythritol-phosphate (MEP) pathway, which is absent in humans, represents a potentially valuable target for the development of novel antibiotics. Within the MEP pathway, the enzyme 1-deoxy-D-xylulose-5-phosphate synthase (DXPS) catalyzes a crucial, rate-limiting first step and a branch point in the biosynthesis of the vitamins B1 and B6. We report the high-resolution crystal structures of DXPS from the important ESKAPE pathogens Pseudomonas aeruginosa and Klebsiella pneumoniae in both the co-factor-bound and the apo forms. We demonstrate that the absence of the cofactor thiamine diphosphate results in conformational changes that lead to disordered loops close to the active site that might be important for the design of potent DXPS inhibitors. Collectively, our results provide important structural details that aid in the assessment of DXPS as a potential target in the ongoing efforts to combat antibiotic resistance.
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Affiliation(s)
- Rawia Hamid
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarbrücken, Germany; Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | - Sebastian Adam
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarbrücken, Germany
| | - Antoine Lacour
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarbrücken, Germany
| | - Leticia Monjas
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Jesko Köhnke
- Institute of Food Chemistry, Leibniz University Hannover, Hannover, Germany; School of Chemistry, University of Glasgow, Glasgow, UK
| | - Anna K H Hirsch
- Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarbrücken, Germany; Department of Pharmacy, Saarland University, Saarbrücken, Germany.
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Varponi I, Ferro S, Menilli L, Grapputo A, Moret F, Mastrotto F, Marin O, Sandrelli F. Fighting Pseudomonas aeruginosa Infections: Antibacterial and Antibiofilm Activity of D-Q53 CecB, a Synthetic Analog of a Silkworm Natural Cecropin B Variant. Int J Mol Sci 2023; 24:12496. [PMID: 37569868 PMCID: PMC10419416 DOI: 10.3390/ijms241512496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic Gram-negative bacterium responsible for severe nosocomial infections and is considered a critical pulmonary pathogen for both immunocompromised and cystic fibrosis patients. Planktonic cells of P. aeruginosa possess intrinsic and acquired resistances, inactivating several classes of conventional antibiotics. Additionally, this bacterium can grow, forming biofilms, and complex structures, further hampering the action of multiple antibiotics. Here, we report the biological properties of D-Q53 CecB, an all-D enantiomer of the silkworm natural peptide Q53 CecB. Compared to the L-variant, D-Q53 CecB was resistant to in vitro degradation by humans and P. aeruginosa elastases and showed an enhanced bactericidal activity against P. aeruginosa planktonic bacteria. D-Q53 CecB was thermostable and maintained its antimicrobial activity at high salt concentrations and in the presence of divalent cations or fetal-bovine serum, although at reduced levels. Against different types of human cells, D-Q53 CecB showed cytotoxic phenomena at concentrations several folds higher compared to those active against P. aeruginosa. When L- and D-Q53 CecB were compared for their antibiofilm properties, both peptides were active in inhibiting biofilm formation. However, the D-enantiomer was extremely effective in inducing biofilm degradation, suggesting this peptide as a favorable candidate in an anti-Pseudomonas therapy.
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Affiliation(s)
- Irene Varponi
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (I.V.); (L.M.); (A.G.); (F.M.)
| | - Stefania Ferro
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (S.F.); (O.M.)
| | - Luca Menilli
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (I.V.); (L.M.); (A.G.); (F.M.)
| | - Alessandro Grapputo
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (I.V.); (L.M.); (A.G.); (F.M.)
- National Biodiversity Future Centre, Piazza Marina 61, 90133 Palermo, Italy
| | - Francesca Moret
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (I.V.); (L.M.); (A.G.); (F.M.)
| | - Francesca Mastrotto
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35131 Padova, Italy;
| | - Oriano Marin
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (S.F.); (O.M.)
| | - Federica Sandrelli
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy; (I.V.); (L.M.); (A.G.); (F.M.)
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Behera SK, Panda AK, Mishra R, Mahanty A, Bisht SS. Structure based virtual screening and molecular dynamics of natural anti-biofilm compounds against SagS response regulator/sensor kinase in Pseudomonas aeruginosa. J Biomol Struct Dyn 2023; 41:6011-6026. [PMID: 35869653 DOI: 10.1080/07391102.2022.2100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/06/2022] [Indexed: 10/16/2022]
Abstract
SagS sensor regulator plays a vital role in biofilm development of Pseudomonas aeruginosa which subsequently makes the cells more tolerant to various antimicrobials. The multidrug resistance (MDR) issue has risen substantially in recent years and is considered a global threat. Therefore, alternative compounds should be unearthed immediately to address the issues related to P. aeruginosa drug resistance for which SagS could be a candidate. The present study is an attempt to screen natural anti-biofilm compounds as the potent inhibitors of SagS. Twenty natural anti-biofilm/quorum sensing inhibiting compounds were retrieved from various literatures with significant inhibitory effects against P. aeruginosa biofilm from in-vitro experiments which were screened using various pharmacokinetic parameters. The screened and three standard drugs were docked against SagS-HisKA using AutoDock 4.2 tool, which were further analysed by MD simulations to understand the binding mode of compounds and dynamic behaviour of the complexes. Two potential anti-biofilm natural compounds, pinocembrin with binding affinity (-7.19 kcal/mol), vestitol (-7.18 kcal/mol) and the standard drug ceftazidime (-8.89 kcal/mol) were selected based on filtered parameters and better binding affinity. The trajectory analysis of MD simulations reflected Pinocembrin in stabilizing the system compared to ceftazidime. The existing reports state that the natural products represent promising source of therapy with least or almost nil adverse effect compared to synthetic drugs which is well collated with our in-silico findings. This investigation can save both time and cost required for in-vitro and in-vivo analysis for designing of a novel anti-biofilm agent against P. aeruginosa biofilm-associated infections.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Rojita Mishra
- Department of Botany, Polasara Science College, Ganjam, India
| | - Arabinda Mahanty
- Crop Protection Division, National Rice Research Institute, Cuttack, India
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Nerandzic M, Antloga K, Robinson N. Alcohol flush does not aid in endoscope channel drying but may serve as an adjunctive microbiocidal measure: A new take on an old assumption. Am J Infect Control 2023; 51:772-778. [PMID: 36130627 DOI: 10.1016/j.ajic.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 09/02/2022] [Accepted: 09/12/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Alcohol is perceived to aid flexible endoscope channel drying, however we previously showed alcohol increased the time required to dry some channels with forced air versus water alone. Yet, alcohol may prevent microorganism outgrowth during storage. Drying endoscope channels has been shown to prevent outgrowth, but it is unknown if incomplete drying (<10 µL remaining) provides similar protection. METHODS Endoscope channel test articles were used to determine the efficacy of 70%-30% alcohol flush for prevention of Pseudomonas aeruginosa outgrowth and drying efficiency. For non-alcohol flushed channels, the impact of forced air drying on outgrowth of P. aeruginosa was determined. RESULTS Alcohol flush (70%-30%) prevented outgrowth with little to no recovery of P. aeruginosa during ambient storage. 70% alcohol increased channel drying time by 1.5 or 3-fold compared to 50% alcohol or water, respectively. Forced air drying of non-alcohol flushed channels greatly reduced the initial contamination level and prevented outgrowth. Incomplete drying of contaminated channels was akin to no application of forced air. Applying forced air for more time than necessary to remove residual liquid did not completely eliminate the low level recovery of P. aeruginosa. CONCLUSIONS Flushing with reduced concentrations of alcohol may provide a strategy to prevent microbial outgrowth while reducing drying time.
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Fortunato G, Vaz-Moreira I, Gajic I, Manaia CM. Insight into phylogenomic bias of bla VIM-2 or bla NDM-1 dissemination amongst carbapenem-resistant Pseudomonas aeruginosa. Int J Antimicrob Agents 2023; 61:106788. [PMID: 36924802 DOI: 10.1016/j.ijantimicag.2023.106788] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 02/06/2023] [Accepted: 03/08/2023] [Indexed: 03/17/2023]
Abstract
OBJECTIVES Pseudomonas aeruginosa (P. aeruginosa) are ubiquitous opportunistic pathogens that combine intrinsic and acquired multidrug resistance phenotypes. Due to different types of acquired genes, carbapenem resistance has been expanding in this species. This study hypothesised that the spread of carbapenem resistance among P. aeruginosa is influenced by phylogenomic features, being distinct for different genes. METHODS To test this hypothesis, the genomes of P. aeruginosa harbouring blaVIM-2 or blaNDM-1 genes were compared. The blaVIM-2 gene was selected because, although frequent, it is almost restricted to this species and blaNDM-1 gene due to its wide interspecies distribution. A group of genomes harbouring the genes blaVIM-2 (n = 116) or blaNDM-1 (n = 27), available in GenBank, was characterised based on core phylogenomic analysis, functional categories in the accessory genome and mobile genetic elements flanking the selected genes. RESULTS Most blaVIM-2 gene hosts belonged to multilocus sequence types (ST) ST111 (n = 32 of 116) and ST233 (n = 27 of 116) and were reported in Europe (n = 75 of 116). The blaNDM-1 gene hosts were distributed by different STs (ST38, ST773, ST235, ST357 and ST654), frequently from Asia (n = 11 of 27). Significant differences in the prevalence of functional protein/enzyme annotations per number of accessory genomes were observed between blaVIM-2+ and blaNDM-1+. The blaVIM-2 gene was frequently inserted in the Tn402-like and Tn21 transposons family and rarely in IS6100, while blaNDM-1 gene was preferentially flanked by ISAba125 and bleMBL genes or associated with IS91 insertion sequence. CONCLUSION The hypothesis that carbapenem resistance gene acquisition is not random among phylogenomic lineages was confirmed, suggesting the importance of phylogeny in the dissemination of antibiotic resistance genes.
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Affiliation(s)
- Gianuario Fortunato
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - Ivone Vaz-Moreira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - Ina Gajic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Célia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal.
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Slade-Vitković M, Bedenić B, Bielen L, Batarilo I, Kibel S, Maravić-Vlahoviček G. In vitro killing of multidrug/extensively drug-resistant Pseudomonas aeruginosa by fosfomycin alone or in combination with antipseudomonal antibiotics. J Chemother 2023; 35:219-230. [PMID: 35943136 DOI: 10.1080/1120009x.2022.2108247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 06/14/2022] [Accepted: 07/27/2022] [Indexed: 10/15/2022]
Abstract
Pseudomonas aeruginosa is a leading cause of nosocomial infections. Given the constant rise in resistance, adequate therapy is increasingly demanding. Fosfomycin recently became an appealing treatment option of bacterial infections due to multidrug-resistant bacteria (MDR). So far, fosfomycin synergy with other antibiotics has been assessed in studies, but only a limited number focused on MDR P. aeruginosa and on the effect of these combinations on the duration of the postantibiotic effect (PAE). We investigated synergy of fosfomycin with an array of antipseudomonal antibiotics using gradient diffusion strip cross method and time-kill method, and their effect on the duration of PAE against 51 variously resistant P. aeruginosa isolates. The highest rate of synergy was observed for combination with ceftazidime (23.4%) and gentamicin (19.1%). The PAE of antibiotic combinations was superior to that of the drugs alone. Our findings indicate that fosfomycin combination therapy may be a valuable treatment alternative.
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Affiliation(s)
- Mia Slade-Vitković
- Croatian Institute for Transfusion Medicine, Zagreb, Croatia
- Clinical Hospital Centre Zagreb, Croatia
| | - Branka Bedenić
- School of Medicine, University of Zagreb, Croatia
- Clinical Hospital Centre Zagreb, Croatia
| | | | - Ivanka Batarilo
- Croatian Institute for Transfusion Medicine, Zagreb, Croatia
| | - Sara Kibel
- University Hospital Centre Osijek, Croatia
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Shiralizadeh S, Keramat F, Hashemi SH, Majzoobi MM, Azimzadeh M, Alikhani MS, Karami P, Rahimi Z, Alikhani MY. Investigation of antimicrobial resistance patterns and molecular typing of Pseudomonas aeruginosa isolates among Coronavirus disease-19 patients. BMC Microbiol 2023; 23:84. [PMID: 36991311 PMCID: PMC10052215 DOI: 10.1186/s12866-023-02825-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is a common co-infecting pathogen recognized among COVID-19 patients. We aimed to investigate the antimicrobial resistance patterns and molecular typing of Pseudomonas aeruginosa isolates among Coronavirus disease-19 patients. METHODS Between December 2020 and July 2021, 15 Pseudomonas aeruginosa were isolated from COVID-19 patients in the intensive care unit at Sina Hospital in Hamadan, west of Iran. The antimicrobial resistance of the isolates was determined by disk diffusion and broth microdilution methods. The double-disk synergy method, Modified Hodge test, and polymerase chain reaction were utilized to detect Pseudomonas aeruginosa extended spectrum beta-lactamase and carbapenemase producers. Microtiter plate assay was performed to evaluate the biofilm formation ability of the isolates. The isolates phylogenetic relatedness was revealed using the multilocus variable-number tandem-repeat analysis method. RESULTS The results showed Pseudomonas aeruginosa isolates had the most elevated resistance to imipenem (93.3%), trimethoprim-sulfamethoxazole (93.3%), ceftriaxone (80%), ceftazidime (80%), gentamicin (60%), levofloxacin (60%), ciprofloxacin (60%), and cefepime (60%). In the broth microdilution method, 100%, 100%, 20%, and 13.3% of isolates showed resistance to imipenem, meropenem, polymyxin B, and colistin, respectively. Ten (66.6%) isolates were identified as multiple drug resistance. Carbapenemase enzymes and extended spectrum beta-lactamases were identified in 66.6% and 20% of the isolates, respectively and the biofilm formation was detected in 100% of the isolates. The blaOXA-48, blaTEM, blaIMP, blaSPM, blaPER, blaVEB, blaNDM, blaSHV, and blaCTX-M genes were detected in 100%, 86.6%, 86.6%, 40%, 20%, 20%, 13.3%, 6.6%, and 6.6% of the isolates, respectively. The blaVIM, blaGIM, blaGES, and blaMCR-1 genes were not identified in any of the isolates. The MLVA typing technique showed 11 types and seven main clusters and most isolates belong to cluster I, V and VII. CONCLUSION Due to the high rate of antimicrobial resistance, as well as the genetic diversity of Pseudomonas aeruginosa isolates from COVID-19 patients, it is indispensable to monitor the antimicrobial resistance pattern and epidemiology of the isolates on a regular basis.
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Affiliation(s)
- Somaye Shiralizadeh
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Fariba Keramat
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Seyyed Hamid Hashemi
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Mohammad Mehdi Majzoobi
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Masoud Azimzadeh
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | | | - Pezhman Karami
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Zahra Rahimi
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran.
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran.
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Sikdar R, Elias MH. Evidence for Complex Interplay between Quorum Sensing and Antibiotic Resistance in Pseudomonas aeruginosa. Microbiol Spectr 2022; 10:e0126922. [PMID: 36314960 PMCID: PMC9769976 DOI: 10.1128/spectrum.01269-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022] Open
Abstract
Quorum sensing (QS) is a cell-density-dependent, intercellular communication system mediated by small diffusible signaling molecules. QS regulates a range of bacterial behaviors, including biofilm formation, virulence, drug resistance mechanisms, and antibiotic tolerance. Enzymes capable of degrading signaling molecules can interfere in QS-a process termed as quorum quenching (QQ). Remarkably, previous work reported some cases where enzymatic interference in QS was synergistic to antibiotics against Pseudomonas aeruginosa. The premise of combination therapy is attractive to fight against multidrug-resistant bacteria, yet comprehensive studies are lacking. Here, we evaluate the effects of QS signal disruption on the antibiotic resistance profile of P. aeruginosa by testing 222 antibiotics and antibacterial compounds from 15 different classes. We found compelling evidence that QS signal disruption does indeed affect antibiotic resistance (40% of all tested compounds; 89/222), albeit not always synergistically (not synergistic for 19% of compounds; 43/222). For some tested antibiotics, such as sulfathiazole and trimethoprim, we were able to relate the changes in resistance caused by QS signal disruption to the modulation of the expression of key genes of the folate biosynthetic pathway. Moreover, using a P. aeruginosa-based Caenorhabditis elegans killing model, we confirmed that enzymatic QQ modulates the effects of antibiotics on P. aeruginosa's pathogenicity in vivo. Altogether, these results show that signal disruption has profound and complex effects on the antibiotic resistance profile of P. aeruginosa. This work suggests that combination therapy including QQ and antibiotics should be discussed not globally but, rather, in case-by-case studies. IMPORTANCE Quorum sensing (QS) is a cell-density-dependent communication system used by a wide range of bacteria to coordinate behaviors. Strategies pertaining to the interference in QS are appealing approaches to control microbial behaviors that depend on QS, including virulence and biofilms. Interference in QS was previously reported to be synergistic with antibiotics, yet no systematic assessment exists. Here, we evaluate the potential of combination treatments using the model opportunistic human pathogen Pseudomonas aeruginosa PA14. In this model, collected data demonstrate that QS largely modulates the antibiotic resistance profile of PA14 (for more than 40% of the tested drugs). However, the outcome of combination treatments is synergistic for only 19% of them. This research demonstrates the complex relationship between QS and antibiotic resistance and suggests that combination therapy including QS inhibitors and antibiotics should be discussed not globally but, rather, in case-by-case studies.
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Affiliation(s)
- Rakesh Sikdar
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Saint Paul, Minnesota, USA
- Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota, USA
| | - Mikael H. Elias
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Saint Paul, Minnesota, USA
- Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota, USA
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Lee DH, Cha JH, Kim DW, Lee K, Kim YS, Oh HY, Cho YH, Cha CJ. Colistin-degrading proteases confer collective resistance to microbial communities during polymicrobial infections. Microbiome 2022; 10:129. [PMID: 35982474 PMCID: PMC9389796 DOI: 10.1186/s40168-022-01315-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/19/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The increasing prevalence of resistance against the last-resort antibiotic colistin is a significant threat to global public health. Here, we discovered a novel colistin resistance mechanism via enzymatic inactivation of the drug and proposed its clinical importance in microbial communities during polymicrobial infections. RESULTS A bacterial strain of the Gram-negative opportunistic pathogen Stenotrophomonas maltophilia capable of degrading colistin and exhibiting a high-level colistin resistance was isolated from the soil environment. A colistin-degrading protease (Cdp) was identified in this strain, and its contribution to colistin resistance was demonstrated by growth inhibition experiments using knock-out (Δcdp) and complemented (Δcdp::cdp) mutants. Coculture and coinfection experiments revealed that S. maltophilia carrying the cdp gene could inactivate colistin and protect otherwise susceptible Pseudomonas aeruginosa, which may seriously affect the clinical efficacy of the drug for the treatment of cystic fibrosis patients with polymicrobial infection. CONCLUSIONS Our results suggest that Cdp should be recognized as a colistin resistance determinant that confers collective resistance at the microbial community level. Our study will provide vital information for successful clinical outcomes during the treatment of complex polymicrobial infections, particularly including S. maltophilia and other colistin-susceptible Gram-negative pathogens such as P. aeruginosa. Video abstract.
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Affiliation(s)
- Do-Hoon Lee
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea
| | - Ju-Hee Cha
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea
| | - Dae-Wi Kim
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea
- Division of Life Sciences, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Kihyun Lee
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea
| | - Yong-Seok Kim
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea
| | - Hyo-Young Oh
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam, 13488, Republic of Korea
| | - You-Hee Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam, 13488, Republic of Korea
| | - Chang-Jun Cha
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17456, Republic of Korea.
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Bogiel T, Depka D, Rzepka M, Mikucka A. Decoding Genetic Features and Antimicrobial Susceptibility of Pseudomonas aeruginosa Strains Isolated from Bloodstream Infections. Int J Mol Sci 2022; 23:ijms23169208. [PMID: 36012468 PMCID: PMC9409454 DOI: 10.3390/ijms23169208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
Pseudomonas aeruginosa is a Gram-negative rod and an etiological factor of opportunistic infections. The infections of this etiology appear mostly among hospitalized patients and are relatively hard to treat due to widespread antimicrobial resistance. Many virulence factors are involved in the pathogenesis of P. aeruginosa infection, the coexistence of which have a significant impact on the course of an infection with a particular localization. The aim of this study was to assess the antimicrobial susceptibility profiles and the frequency of genes encoding selected virulence factors in clinical P. aeruginosa strains isolated from bloodstream infections (BSIs). The following genes encoding virulence factors of enzymatic activity were assessed: lasB, plC H, plC N, nan1, nan2, aprA and phzM. The frequency of the genes encoding the type III secretion system effector proteins (exoU and exoS) and the genes encoding pilin structural subunits (pilA and pilB) were also investigated. The occurrence of virulence-factor genes was assessed using polymerase chain reactions, each in a separate reaction. Seventy-one P. aeruginosa strains, isolated from blood samples of patients with confirmed bacteremia hospitalized at the University Hospital No. 1 of Dr. Antoni Jurasz in Bydgoszcz, Poland, were included in the study. All the investigated strains were susceptible to colistin, while the majority of the strains presented resistance to ticarcillin/clavulanate (71.8%), piperacillin (60.6 %), imipenem (57.7%) and piperacillin/tazobactam (52.1%). The presence of the lasB and plC H genes was noted in all the tested strains, while the plC N, nan2, aprA, phzM and nan1 genes were identified in 68 (95.8%), 66 (93.0%), 63 (88.7%), 55 (77.5%) and 34 (47.9%) isolates, respectively. In 44 (62.0%) and 41 (57.7%) strains, the presence of the exoU and exoS genes was confirmed, while the pilA and pilB genes were noted only in 14 (19.7%) and 3 (4.2%) isolates, respectively. This may be due to the diverse roles of these proteins in the development and maintenance of BSIs. Statistically significant correlations were observed between particular gene pairs’ coexistence (e.g., alkaline protease and neuraminidase 2). Altogether, twenty-seven distinctive genotypes were observed among the studied strains, indicating the vast variety of genetic compositions of P. aeruginosa strains causing BSIs.
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Shafodino FS, Lusilao JM, Mwapagha LM. Phytochemical characterization and antimicrobial activity of Nigella sativa seeds. PLoS One 2022; 17:e0272457. [PMID: 35926002 PMCID: PMC9352024 DOI: 10.1371/journal.pone.0272457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/19/2022] [Indexed: 01/12/2023] Open
Abstract
Nigella sativa is one of the medicinal plant species that gained popularity for a wide range of medicinal applications due to its seeds which are rich in phytoconstituents. Continuous scientific investigations on N. sativa seeds are needed to better understand its many medicinal potentials. This will also form a composition-based foundation that support several old and/or new case beneficial histories of its seeds. In this study, the antimicrobial activity of N. sativa seeds was phytochemically characterized and evaluated. Different extracts of N. sativa seeds were obtained by maceration and soxhlet extraction methods using different extraction solvents. The obtained extracts were tested using UV-Vis, FTIR, TLC, and GC-MS techniques. Antimicrobial analysis against pathogenic bacterial strains (E. coli, P. aeruginosa, S. aureus and B. subtilis) was carried out by disc diffusion method using different preparations of N. sativa seeds. The screening analysis revealed the presence of all the tested phytochemicals. FT-IR analysis of N. sativa seeds oil extracted with absolute ethanol revealed functional groups that are associated with active ingredients of medicinal value. The GC-MS chromatograms revealed different chemical constituents whose known bioactivities and/or applications are essential in the management of life-threatening infections. Different extracts of N. sativa seeds showed antimicrobial activity with different efficacy against the tested pathogenic bacterial strains. Therefore, this study shows that extracts of N. sativa seeds contain a variety of chemical components and functional groups linked to their antimicrobial properties, and they might be natural precursors of nutraceuticals.
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Affiliation(s)
- Festus S. Shafodino
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Julien M. Lusilao
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Lamech M. Mwapagha
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
- * E-mail:
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Gbala ID, Macharia RW, Bargul JL, Magoma G. Membrane Permeabilization and Antimicrobial Activity of Recombinant Defensin-d2 and Actifensin against Multidrug-Resistant Pseudomonas aeruginosa and Candida albicans. Molecules 2022; 27:molecules27144325. [PMID: 35889198 PMCID: PMC9317813 DOI: 10.3390/molecules27144325] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 12/10/2022] Open
Abstract
Antimicrobial resistance requires urgent efforts towards the discovery of active antimicrobials, and the development of strategies to sustainably produce them. Defensin and defensin-like antimicrobial peptides (AMPs) are increasingly gaining pharmacological interest because of their potency against pathogens. In this study, we expressed two AMPs: defensin-d2 derived from spinach, and defensin-like actifensin from Actinomyces ruminicola. Recombinant pTXB1 plasmids carrying the target genes encoding defensin-d2 and actifensin were generated by the MEGAWHOP cloning strategy. Each AMP was first expressed as a fusion protein in Escherichia coli, purified by affinity chromatography, and was thereafter assayed for antimicrobial activity against multidrug-resistant (MDR) pathogens. Approximately 985 µg/mL and 2895 µg/mL of recombinant defensin-d2 and actifensin, respectively, were recovered with high purity. An analysis by MALDI-TOF MS showed distinct peaks corresponding to molecular weights of approximately 4.1 kDa for actifensin and 5.8 kDa for defensin-d2. An in vitro antimicrobial assay showed that MDR Pseudomonas aeruginosa and Candida albicans were inhibited at minimum concentrations of 7.5 µg/mL and 23 µg/mL for recombinant defensin-d2 and actifensin, respectively. The inhibitory kinetics of the peptides revealed cidal activity within 4 h of the contact time. Furthermore, both peptides exhibited an antagonistic interaction, which could be attributed to their affinities for similar ligands, as deduced by peptide–ligand profiling. Moreover, both peptides inhibited biofilm formation, and they exhibited no resistance potential and low hemolytic activity. The peptides also possess the ability to permeate and disrupt the cell membranes of MDR P. aeruginosa and C. albicans. Therefore, recombinant actifensin and defensin-d2 exhibit broad-spectrum antimicrobial activity and have the potential to be used as therapy against MDR pathogens.
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Affiliation(s)
- Ifeoluwa D. Gbala
- Molecular Biology and Biotechnology, Institute for Basic Sciences, Technology and Innovation, Pan African University, Nairobi P.O. Box 62000-00200, Kenya;
- Correspondence:
| | - Rosaline W. Macharia
- Centre for Biotechnology and Bioinformatics, University of Nairobi, Nairobi P.O. Box 30197-00100, Kenya;
| | - Joel L. Bargul
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya;
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya
| | - Gabriel Magoma
- Molecular Biology and Biotechnology, Institute for Basic Sciences, Technology and Innovation, Pan African University, Nairobi P.O. Box 62000-00200, Kenya;
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya;
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de Celis M, Belda I, Marquina D, Santos A. Phenotypic and transcriptional study of the antimicrobial activity of silver and zinc oxide nanoparticles on a wastewater biofilm-forming Pseudomonas aeruginosa strain. Sci Total Environ 2022; 826:153915. [PMID: 35219669 DOI: 10.1016/j.scitotenv.2022.153915] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 06/14/2023]
Abstract
The extensive use of nanoparticles (NPs) in industrial processes makes their potential release into the environment an issue of concern. Ag and ZnO NPs are among the most frequently used NPs, potentially reaching concentrations of 1-4 and 64 mg/kg, respectively, in Wastewater Treatment Plants (WWTPs), with unknown effects over microbial populations. Thus, we examined, in depth, the effect of such NPs on a P. aeruginosa strain isolated from a WWTP. We evaluated the growth, ROS production and biofilm formation, in addition to the transcriptomic response in presence of Ag and ZnO NPs at concentrations potentially found in sewage sludge. The transcriptomic and phenotypic patterns of P. aeruginosa in presence of Ag NPs were, in general, similar to the control treatment, with some specific transcriptional impacts affecting processes involved in biofilm formation and iron homeostasis. The biofilms formed under Ag NPs treatment were, on average, thinner and more homogeneous. ZnO NPs also alters the biofilm formation and iron homeostasis in P. aeruginosa, however, the higher and more toxic concentrations utilized caused an increase in cell death and eDNA release. Thus, the biofilm development was characterized by EPS production, via eDNA release. The number of differentially expressed genes in presence of ZnO NPs was higher compared to Ag NPs treatment. Even though the responses of P. aeruginosa to the presence of the studied metallic NPs was at some extent similar, the higher and more toxic concentrations of ZnO NPs produced greater changes concerning cell viability and ROS production, causing disruption in biofilm development.
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Affiliation(s)
- M de Celis
- Department of Genetics, Physiology and Microbiology, Microbiology Unit, Faculty of Biology, Complutense University of Madrid, José Antonio Novais 12, 28040 Madrid, Spain
| | - I Belda
- Department of Genetics, Physiology and Microbiology, Microbiology Unit, Faculty of Biology, Complutense University of Madrid, José Antonio Novais 12, 28040 Madrid, Spain
| | - D Marquina
- Department of Genetics, Physiology and Microbiology, Microbiology Unit, Faculty of Biology, Complutense University of Madrid, José Antonio Novais 12, 28040 Madrid, Spain
| | - A Santos
- Department of Genetics, Physiology and Microbiology, Microbiology Unit, Faculty of Biology, Complutense University of Madrid, José Antonio Novais 12, 28040 Madrid, Spain.
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van Rossem M, Wilks S, Kaczmarek M, Secor PR, D’Alessandro G. Modelling of filamentous phage-induced antibiotic tolerance of P. aeruginosa. PLoS One 2022; 17:e0261482. [PMID: 35404965 PMCID: PMC9000967 DOI: 10.1371/journal.pone.0261482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/25/2022] [Indexed: 11/19/2022] Open
Abstract
Filamentous molecules tend to spontaneously assemble into liquid crystalline droplets with a tactoid morphology in environments with high concentration on non-adsorbing molecules. Tactoids of filamentous Pf bacteriophage, such as those produced by Pseudomonas aeruginosa, have been linked to increased antibiotic tolerance. We modelled this system and show that tactoids composed of filamentous Pf virions can lead to antibiotic tolerance by acting as an adsorptive diffusion barrier. The continuum model, reminiscent of descriptions of reactive diffusion in porous media, has been solved numerically and good agreement was found with the analytical results, obtained using a homogenisation approach. We find that the formation of tactoids significantly increases antibiotic diffusion times which may lead to stronger antibiotic resistance.
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Affiliation(s)
- Maria van Rossem
- Physics and Astronomy, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Sandra Wilks
- Health Sciences, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Malgosia Kaczmarek
- Physics and Astronomy, University of Southampton, Southampton, Hampshire, United Kingdom
| | - Patrick R. Secor
- Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
| | - Giampaolo D’Alessandro
- Mathematical Sciences, University of Southampton, Southampton, Hampshire, United Kingdom
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31
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Li Y, Wang S, Xing Z, Niu Y, Liao Z, Lu Y, Qiu J, Zhang J, Wang C, Dong L. Destructing biofilms by cationic dextran through phase transition. Carbohydr Polym 2022; 279:118778. [PMID: 34980345 DOI: 10.1016/j.carbpol.2021.118778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/28/2021] [Accepted: 10/10/2021] [Indexed: 11/16/2022]
Abstract
Eliminating biofilms from infected tissue presents one of the most challenging issues in clinical treatment of chronic wounds. In biofilms, the extracellular polymeric substances (EPS) form gel structures by electrostatic forces between macromolecules. We hypothesized that cationic polymers could induce the gel-to-sol phase transition of the network, leading to biofilms disruptions. We first validated this assumption by using polyethyleneimine (PEI) as a model molecule, and further synthesized two cationic dextrans with high biodegradability for in vitro and in vivo evaluation. All the cationic polymers could destruct Pseudomonas aeruginosa (P. aeruginosa) biofilms. Treating biofilm with cationic dextrans significantly enhanced the bacterial antibiotic sensitivity. When tested in a biofilm-presenting mouse wound healing model, the cationic dextrans efficiently controlled infection, and accelerated the healing process. Our findings suggest that devising cationic polymers to trigger phase transition of biofilm is an effective, straightforward, and perhaps generic strategy for anti-bacterial therapies.
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Affiliation(s)
- Yurong Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China
| | - Shaocong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China
| | - Zhen Xing
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China
| | - Yiming Niu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Zhencheng Liao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Yang Lu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China
| | - Junni Qiu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China
| | - Junfeng Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China.
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China.
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210093, China.
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Sanad H, Belattmania Z, Nafis A, Hassouani M, Mazoir N, Reani A, Hassani L, Vasconcelos V, Sabour B. Chemical Composition and In Vitro Antioxidant and Antimicrobial Activities of the Marine Cyanolichen Lichina pygmaea Volatile Compounds. Mar Drugs 2022; 20:md20030169. [PMID: 35323468 PMCID: PMC8955006 DOI: 10.3390/md20030169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/14/2022] [Accepted: 02/23/2022] [Indexed: 12/10/2022] Open
Abstract
Volatile compounds from the marine cyanolichen Lichina pygmaea, collected from the Moroccan Atlantic coast, were extracted by hydrodistillation and their putative chemical composition was investigated by gas chromatography coupled to mass spectrometry (GC/MS). Based on the obtained results, Lichina pygmaea volatile compounds (LPVCs) were mainly dominated by sesquiterpenes compounds, where γ-himachalene, β-himachalene, (2E,4E)-2,4 decadienal and α-himachalene were assumed to be the most abundant constituents, with percentage of 37.51%, 11.71%, 8.59% and 7.62%, respectively. LPVCs depicted significant antimicrobial activity against all tested strains (Staphylococcus aureus CCMM B3, Pseudomonas aeruginosa DSM 50090, Escherichia coli ATCC 8739 and Candida albicans CCMM-L4) with minimum inhibitory concentration (MIC) values within the range of 1.69–13.5 mg/mL. Moreover, this LPVC showed interesting scavenging effects on the 2,2-diphenyl-1-picrylhydrazyl radical with an IC50 of 0.21 mg/mL. LPVCs could be an approving resource with moderate antimicrobial potential and interesting antioxidant activity for cosmetics and pharmaceutical applications.
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Affiliation(s)
- Hiba Sanad
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
| | - Zahira Belattmania
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
| | - Ahmed Nafis
- Department of Biology, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco;
| | - Meryem Hassouani
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal
| | - Noureddine Mazoir
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
| | - Abdeltif Reani
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
| | - Lahcen Hassani
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Faculty of Sciences Semlalia, University Cadi Ayyad, P.O. Box 2390, Marrakech 40001, Morocco;
| | - Vitor Vasconcelos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
- Correspondence: ; Tel.: +351-223-401-817
| | - Brahim Sabour
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization—URL CNRST N°10, Faculty of Sciences El Jadida, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco; (H.S.); (Z.B.); (M.H.); (N.M.); (A.R.); (B.S.)
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Xie Q, Wang Y, Zhang M, Wu S, Wei W, Xiao W, Wang Y, Zhao J, Liu N, Jin Y, Wu J, Xu P. Recombinant HNP-1 Produced by Escherichia coli Triggers Bacterial Apoptosis and Exhibits Antibacterial Activity against Drug-Resistant Bacteria. Microbiol Spectr 2022; 10:e0086021. [PMID: 35019682 PMCID: PMC8754131 DOI: 10.1128/spectrum.00860-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 12/08/2021] [Indexed: 12/14/2022] Open
Abstract
Human neutrophil peptide-1 (HNP-1) is a promising antibiotic candidate, but its clinical applications have been hampered by challenges during mass production and an inadequate understanding of its bactericidal mechanisms. In this study, we demonstrated that Escherichia coli expressing full-length preproHNP-1 secretes a soluble form of HNP-1, which can be recovered from the total cell lysate after isopropyl thio-β-d-galactoside (IPTG) induction and ultrafiltration. Label-free quantitative proteomics and co-immunoprecipitation experiments revealed that HNP-1 induces cell apoptosis in bacteria by causing DNA and membrane damage. Notably, we found that HNP-1 disrupts the DNA damage response pathway by interfering with the binding of RecA to single-stranded DNA (ssDNA). Further experiments demonstrated that HNP-1 encapsulated in liposomes inhibits the growth of methicillin-resistant Staphylococcus aureus (MRSA) and meropenem-resistant Pseudomonas aeruginosa (MRPA). These results indicated that recombinant protein expression may be a simple and cost-effective solution to produce HNP-1 and that RecA inhibition via HNP-1 may serve as an alternative strategy to counteract antibiotic resistance. IMPORTANCE Human neutrophil peptide-1 (HNP-1) is a promising antibiotic candidate, but its clinical application has been hampered by the difficulty of mass production and an inadequate understanding of its bactericidal mechanisms. In this study, we demonstrated that recombinant protein expression combined with ultrafiltration may be a simple and cost-effective solution to HNP-1 production. We further found that HNP-1 induces bacterial apoptosis and prevents its SOS repair pathway from binding to the RecA protein, which may be a new antibacterial mechanism. In addition, we showed that HNP-1 encapsulated in liposomes inhibits the growth of methicillin-resistant Staphylococcus aureus (MRSA) and meropenem-resistant Pseudomonas aeruginosa (MRPA). These results provide new insights into the production and antibacterial mechanism of HNP-1, both of which may promote its clinical application.
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Affiliation(s)
- Qi Xie
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yin Wang
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
| | - Mengmeng Zhang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing, China
| | - Shujia Wu
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
| | - Wei Wei
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
| | - Weidi Xiao
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
| | - Yihao Wang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
| | - Jinchao Zhao
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
| | - Nan Liu
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
| | - Yiguang Jin
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing, China
| | - Junzhu Wu
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
| | - Ping Xu
- School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education and Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, China
- Anhui Medical University, Hefei, China
- School of Public Health, China Medical University, Shenyang, China
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Barceló IM, Torrens G, Escobar-Salom M, Jordana-Lluch E, Capó-Bauzá MM, Ramón-Pallín C, García-Cuaresma D, Fraile-Ribot PA, Mulet X, Oliver A, Juan C. Impact of Peptidoglycan Recycling Blockade and Expression of Horizontally Acquired β-Lactamases on Pseudomonas aeruginosa Virulence. Microbiol Spectr 2022; 10:e0201921. [PMID: 35171032 PMCID: PMC8849096 DOI: 10.1128/spectrum.02019-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/24/2022] [Indexed: 01/02/2023] Open
Abstract
In the current scenario of antibiotic resistance magnification, new weapons against top nosocomial pathogens like Pseudomonas aeruginosa are urgently needed. The interplay between β-lactam resistance and virulence is considered a promising source of targets to be attacked by antivirulence therapies, and in this regard, we previously showed that a peptidoglycan recycling blockade dramatically attenuated the pathogenic power of P. aeruginosa strains hyperproducing the chromosomal β-lactamase AmpC. Here, we sought to ascertain whether this observation could be applicable to other β-lactamases. To do so, P. aeruginosa wild-type or peptidoglycan recycling-defective strains (ΔampG and ΔnagZ) harboring different cloned β-lactamases (transferable GES, VIM, and OXA types) were used to assess their virulence in Galleria mellonella larvae by determining 50% lethal doses (LD50s). A mild yet significant LD50 increase was observed after peptidoglycan recycling disruption per se, whereas the expression of class A and B enzymes did not impact virulence. While the production of the narrow-spectrum class D OXA-2 entailed a slight attenuation, its extended-spectrum derivatives OXA-226 (W159R [bearing a change of W to R at position 159]), OXA-161 (N148D), and principally, OXA-539 (D149 duplication) were associated with outstanding virulence impairments, especially in recycling-defective backgrounds (with some LD50s being >1,000-fold that of the wild type). Although their exact molecular bases remain to be deciphered, these results suggest that mutations affecting the catalytic center and, therefore, the hydrolytic spectrum of OXA-2-derived enzymes also drastically impact the pathogenic power of P. aeruginosa. This work provides new and relevant knowledge to the complex topic of the interplay between the production of β-lactamases and virulence that could be useful to build future therapeutic strategies against P. aeruginosa. IMPORTANCE Pseudomonas aeruginosa is one of the leading nosocomial pathogens whose growing resistance makes the development of therapeutic options extremely urgent. The resistance-virulence interplay has classically aroused researchers' interest as a source of therapeutic targets. In this regard, we describe a wide array of virulence attenuations associated with different transferable β-lactamases, among which the production of OXA-2-derived extended-spectrum β-lactamases stood out as a dramatic handicap for pathogenesis, likely as a side effect of mutations causing the expansion of their hydrolytic spectrums. Moreover, our results confirm the validity of disturbing peptidoglycan recycling as a weapon to attenuate P. aeruginosa virulence in class C and D β-lactamase production backgrounds. In the current scenario of dissemination of horizontally acquired β-lactamases, this work brings out new data on the complex interplay between the production of specific enzymes and virulence attenuation that, if complemented with the characterization of the underlying mechanisms, will likely be exploitable to develop future virulence-targeting antipseudomonal strategies.
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Affiliation(s)
- Isabel M. Barceló
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Gabriel Torrens
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - María Escobar-Salom
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Elena Jordana-Lluch
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - María Magdalena Capó-Bauzá
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Carlos Ramón-Pallín
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Daniel García-Cuaresma
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Pablo A. Fraile-Ribot
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Xavier Mulet
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Antonio Oliver
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
| | - Carlos Juan
- Microbiology Department and Research Unit, University Hospital Son Espases, Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- CIBER de Enfermedades Infecciosas, Madrid, Spain
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Pan X, Zhao X, Song Y, Ren H, Tian Z, Liang Q, Jin Y, Bai F, Cheng Z, Feng J, Wu W. Molecular Characterization of WCK 5222 (Cefepime/Zidebactam)-Resistant Mutants Developed from a Carbapenem-Resistant Pseudomonas aeruginosa Clinical Isolate. Microbiol Spectr 2022; 10:e0267821. [PMID: 35196805 PMCID: PMC8865557 DOI: 10.1128/spectrum.02678-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 01/27/2022] [Indexed: 12/16/2022] Open
Abstract
WCK 5222 (cefepime/zidebactam) is a β-lactam/β-lactamase inhibitor combination that is effective against a broad range of highly drug-resistant bacterial pathogens, including those producing metallo-β-lactamase. In this study, we isolated a multidrug-resistant Pseudomonas aeruginosa clinical strain that is resistant to a variety of β-lactam antibiotics and the ceftazidime-avibactam combination. A metallo-β-lactamase gene blaDIM-2 was identified on a self-transmissible megaplasmid in the strain, which confers the resistance to β-lactam antibiotics, leaving WCK 5222 potentially one of the last treatment resorts. In vitro passaging assay combined with whole-genome sequencing revealed mutations in the pbpA gene (encoding the zidebactam target protein PBP2) in the evolved resistant mutants. Among the mutations, a V516M mutation increased the bacterial virulence in a murine acute pneumonia model. Reconstitution of the mutations in the reference strain PAO1 verified their roles in the resistance to zidebactam and revealed their influences on cell morphology in the absence and presence of zidebactam. Microscale thermophoresis (MST) assays demonstrated that the mutations reduced the affinity between PBP2 and zidebactam to various extents. Overall, our results revealed that mutations in the pbpA gene might be a major cause of evolved resistance to WCK 5222 in clinical settings. IMPORTANCE Antibiotic resistance imposes a severe threat on human health. WCK 5222 is a β-lactam/β-lactamase inhibitor combination that is composed of cefepime and zidebactam. It is one of the few antibiotics in clinical trials that are effective against multidrug-resistant Pseudomonas aeruginosa, including those producing metallo-β-lactamases. Understanding the mechanisms and development of bacterial resistance to WCK 5222 may provide clues for the development of strategies to suppress resistant evolvement. In this study, we performed an in vitro passaging assay by using a multidrug-resistant P. aeruginosa clinical isolate. Our results revealed that mutations in the zidebactam target protein PBP2 play a major role in the bacterial resistance to WCK 5222. We further demonstrated that the mutations reduced the affinities between PBP2 and zidebactam and resulted in functional resistance of PBP2 to zidebactam.
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Affiliation(s)
- Xiaolei Pan
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Xinrui Zhao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Yuqin Song
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Huan Ren
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Zhenyang Tian
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
| | - Qi’an Liang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Yongxin Jin
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Fang Bai
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Zhihui Cheng
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Jie Feng
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Weihui Wu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
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Hosseini M, Chin AWH, Williams MD, Behzadinasab S, Falkinham JO, Poon LLM, Ducker WA. Transparent Anti-SARS-CoV-2 and Antibacterial Silver Oxide Coatings. ACS Appl Mater Interfaces 2022; 14:8718-8727. [PMID: 35138100 PMCID: PMC8848512 DOI: 10.1021/acsami.1c20872] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/14/2022] [Indexed: 05/17/2023]
Abstract
Transparent antimicrobial coatings can maintain the aesthetic appeal of surfaces and the functionality of a touch-screen while adding the benefit of reducing disease transmission. We fabricated an antimicrobial coating of silver oxide particles in a silicate matrix on glass. The matrix was grown by a modified Stöber sol-gel process with vapor-phase water and ammonia. A coating on glass with 2.4 mg of Ag2O per mm2 caused a reduction of 99.3% of SARS-CoV-2 and >99.5% of Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin-resistant Staphylococcus aureus compared to the uncoated glass after 1 h. We envisage that screen protectors with transparent antimicrobial coatings will find particular application to communal touch-screens, such as in supermarkets and other check-out or check-in facilities where a number of individuals utilize the same touch-screen in a short interval.
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Affiliation(s)
- Mohsen Hosseini
- Dept. of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - Alex W. H. Chin
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, Hong Kong, China
| | - Myra D. Williams
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - Saeed Behzadinasab
- Dept. of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - Joseph O. Falkinham
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - Leo L. M. Poon
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, Hong Kong, China
- HKU-Pasteur Research Pole, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - William A. Ducker
- Dept. of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
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Grigorenko VG, Khrenova MG, Andreeva IP, Rubtsova MY, Lev AI, Novikova TS, Detusheva EV, Fursova NK, Dyatlov IA, Egorov AM. Drug Repurposing of the Unithiol: Inhibition of Metallo-β-Lactamases for the Treatment of Carbapenem-Resistant Gram-Negative Bacterial Infections. Int J Mol Sci 2022; 23:ijms23031834. [PMID: 35163756 PMCID: PMC8837113 DOI: 10.3390/ijms23031834] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 02/05/2023] Open
Abstract
The increasing antibiotic resistance is a clinical problem worldwide. Numerous Gram-negative bacteria have already become resistant to the most widely used class of antibacterial drugs, β-lactams. One of the main mechanisms is inactivation of β-lactam antibiotics by bacterial β-lactamases. Appearance and spread of these enzymes represent a continuous challenge for the clinical treatment of infections and for the design of new antibiotics and inhibitors. Drug repurposing is a prospective approach for finding new targets for drugs already approved for use. We describe here the inhibitory potency of known detoxifying antidote 2,3-dimercaptopropane-1-sulfonate (unithiol) against metallo-β-lactamases. Unithiol acts as a competitive inhibitor of meropenem hydrolysis by recombinant metallo-β-lactamase NDM-1 with the KI of 16.7 µM. It is an order of magnitude lower than the KI for l-captopril, the inhibitor of angiotensin-converting enzyme approved as a drug for the treatment of hypertension. Phenotypic methods demonstrate that the unithiol inhibits natural metallo-β-lactamases NDM-1 and VIM-2 produced by carbapenem-resistant K. pneumoniae and P. aeruginosa bacterial strains. The 3D full atom structures of unithiol complexes with NDM-1 and VIM-2 are obtained using QM/MM modeling. The thiol group is located between zinc cations of the active site occupying the same place as the catalytic hydroxide anion in the enzyme–substrate complex. The sulfate group forms both a coordination bond with a zinc cation and hydrogen bonds with the positively charged residue, lysine or arginine, responsible for proper orientation of antibiotics upon binding to the active site prior to hydrolysis. Thus, we demonstrate both experimentally and theoretically that the unithiol is a prospective competitive inhibitor of metallo-β-lactamases and it can be utilized in complex therapy together with the known β-lactam antibiotics.
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Affiliation(s)
- Vitaly G. Grigorenko
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (I.P.A.); (M.Y.R.); (A.M.E.)
- Correspondence: (V.G.G.); (M.G.K.)
| | - Maria G. Khrenova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (I.P.A.); (M.Y.R.); (A.M.E.)
- Bach Institute of Biochemistry, Federal Research Centre “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 119071 Moscow, Russia
- Correspondence: (V.G.G.); (M.G.K.)
| | - Irina P. Andreeva
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (I.P.A.); (M.Y.R.); (A.M.E.)
| | - Maya Yu. Rubtsova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (I.P.A.); (M.Y.R.); (A.M.E.)
| | - Anastasia I. Lev
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Russia; (A.I.L.); (T.S.N.); (E.V.D.); (N.K.F.); (I.A.D.)
| | - Tatiana S. Novikova
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Russia; (A.I.L.); (T.S.N.); (E.V.D.); (N.K.F.); (I.A.D.)
| | - Elena V. Detusheva
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Russia; (A.I.L.); (T.S.N.); (E.V.D.); (N.K.F.); (I.A.D.)
| | - Nadezhda K. Fursova
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Russia; (A.I.L.); (T.S.N.); (E.V.D.); (N.K.F.); (I.A.D.)
| | - Ivan A. Dyatlov
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Russia; (A.I.L.); (T.S.N.); (E.V.D.); (N.K.F.); (I.A.D.)
| | - Alexey M. Egorov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (I.P.A.); (M.Y.R.); (A.M.E.)
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Kroken AR, Gajenthra Kumar N, Yahr TL, Smith BE, Nieto V, Horneman H, Evans DJ, Fleiszig SMJ. Exotoxin S secreted by internalized Pseudomonas aeruginosa delays lytic host cell death. PLoS Pathog 2022; 18:e1010306. [PMID: 35130333 PMCID: PMC8853526 DOI: 10.1371/journal.ppat.1010306] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/17/2022] [Accepted: 01/25/2022] [Indexed: 12/22/2022] Open
Abstract
The Pseudomonas aeruginosa toxin ExoS, secreted by the type III secretion system (T3SS), supports intracellular persistence via its ADP-ribosyltransferase (ADPr) activity. For epithelial cells, this involves inhibiting vacuole acidification, promoting vacuolar escape, countering autophagy, and niche construction in the cytoplasm and within plasma membrane blebs. Paradoxically, ExoS and other P. aeruginosa T3SS effectors can also have antiphagocytic and cytotoxic activities. Here, we sought to reconcile these apparently contradictory activities of ExoS by studying the relationships between intracellular persistence and host epithelial cell death. Methods involved quantitative imaging and the use of antibiotics that vary in host cell membrane permeability to selectively kill intracellular and extracellular populations after invasion. Results showed that intracellular P. aeruginosa mutants lacking T3SS effector toxins could kill (permeabilize) cells when extracellular bacteria were eliminated. Surprisingly, wild-type strain PAO1 (encoding ExoS, ExoT and ExoY) caused cell death more slowly, the time extended from 5.2 to 9.5 h for corneal epithelial cells and from 10.2 to 13.0 h for HeLa cells. Use of specific mutants/complementation and controls for initial invasion showed that ExoS ADPr activity delayed cell death. Triggering T3SS expression only after bacteria invaded cells using rhamnose-induction in T3SS mutants rescued the ExoS-dependent intracellular phenotype, showing that injected effectors from extracellular bacteria were not required. The ADPr activity of ExoS was further found to support internalization by countering the antiphagocytic activity of both the ExoS and ExoT RhoGAP domains. Together, these results show two additional roles for ExoS ADPr activity in supporting the intracellular lifestyle of P. aeruginosa; suppression of host cell death to preserve a replicative niche and inhibition of T3SS effector antiphagocytic activities to allow invasion. These findings add to the growing body of evidence that ExoS-encoding (invasive) P. aeruginosa strains can be facultative intracellular pathogens, and that intracellularly secreted T3SS effectors contribute to pathogenesis. While the ADPr domain of the T3SS effector ExoS plays multiple roles in the intracellular lifestyle of P. aeruginosa, ExoS can also be cytotoxic and/or antiphagocytic. Here, we show that when P. aeruginosa enters the cytosol of epithelial cells, cell death is triggered independently of T3SS effector toxins, but ExoS ADPr activity delays this to enable continued intracellular survival and replication. Using rhamnose induction to express the T3SS only after invasion restored this ExoS-dependent phenotype, showing that intracellularly secreted effectors can enable intracellular pathogenesis. ExoS ADPr activity also countered antiphagocytic activity of ExoS and ExoT RhoGAP domains. These results show two additional roles for ExoS ADPr activity in promoting internalization of P. aeruginosa and protecting the intracellular niche, continuing to challenge the notions that P. aeruginosa is exclusively an extracellular pathogen, that it needs to inject T3SS effectors across plasma membranes, and that ExoS is necessarily cytotoxic to host cells.
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Affiliation(s)
- Abby R. Kroken
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, Illinois, United States of America
| | - Naren Gajenthra Kumar
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
| | - Timothy L. Yahr
- Department of Microbiology and Immunology, University of Iowa, Iowa City, Iowa, United States of America
| | - Benjamin E. Smith
- Vision Science Program, University of California, Berkeley, Berkeley, California, United States of America
| | - Vincent Nieto
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
| | - Hart Horneman
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
| | - David J. Evans
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
- College of Pharmacy, Touro University California, Vallejo, California, United States of America
| | - Suzanne M. J. Fleiszig
- School of Optometry, University of California, Berkeley, Berkeley, California, United States of America
- Vision Science Program, University of California, Berkeley, Berkeley, California, United States of America
- Graduate Groups in Microbiology, and Infectious Diseases & Immunity, University of California, Berkeley, Berkeley, California, United States of America
- * E-mail:
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Skóra B, Lewińska A, Kryshchyshyn-Dylevych A, Kaminskyy D, Lesyk R, Szychowski KA. Evaluation of Anticancer and Antibacterial Activity of Four 4-Thiazolidinone-Based Derivatives. Molecules 2022; 27:molecules27030894. [PMID: 35164157 PMCID: PMC8839971 DOI: 10.3390/molecules27030894] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 12/16/2022]
Abstract
Heterocycles are commonly known for their unique features, e.g., antibacterial or anticancer properties. Although many synthetic heterocycles, such as 4-thiazolidinone (4-TZD), have been synthesized, their potential applications have not yet been fully investigated. However, many researchers have reported relevant results that can be a basis for the search for new potential drugs. Therefore, the aim of this study was to evaluate the cytotoxic, cytostatic, and antibacterial effects of certain 4-thiazolidinone-based derivatives, Les-3166, Les-5935, Les-6009, and Les-6166, on human fibroblasts (BJ), neuroblastoma (SH-SY5Y), epithelial lung carcinoma (A549), and colorectal adenocarcinoma (CACO-2) cell lines in vitro. All tested compounds applied in a concentration range from 10 to 100 µM were able to decrease metabolic activity in the BJ, A549, and SH-SY5Y cell lines. However, the action of Les-3166 was mainly based on the ROS-independent pathway, similarly to Les-6009. In turn, Les-5935 and Les-6166 were able to promote ROS production in BJ, A549, and SH-SY5Y cells, compared to the control. Les-3166, Les-6009, and Les-6166 significantly increased the caspase-3 activity, especially at the concentrations of 50 µM and 100 µM. However, Les-5935 did not induce apoptosis. Only Les-5935 showed a minor cytostatic effect on SH-SY5Y cells. Additionally, the antibacterial properties of the tested compounds against P. aeruginosa bacterial biofilm can be ranked as follows: Les-3166 > Les-5935 > Les-6009. Les-6166 did not show any anti-biofilm activity. In summary, the study showed that Les-5935, Les-6009, and Les-6166 were characterized by anticancer properties, especially in the human lung cancer cell. In cases of BJ, SH-SY5Y, and CACO-2 cells the anticancer usage of such compounds is limited due to effect visible only at 50 and 100 µM.
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Affiliation(s)
- Bartosz Skóra
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland; (R.L.); (K.A.S.)
- Correspondence:
| | - Anna Lewińska
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland;
| | - Anna Kryshchyshyn-Dylevych
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine; (A.K.-D.); (D.K.)
| | - Danylo Kaminskyy
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine; (A.K.-D.); (D.K.)
| | - Roman Lesyk
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland; (R.L.); (K.A.S.)
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine; (A.K.-D.); (D.K.)
| | - Konrad A. Szychowski
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland; (R.L.); (K.A.S.)
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Rima M, Trognon J, Latapie L, Chbani A, Roques C, El Garah F. Seaweed Extracts: A Promising Source of Antibiofilm Agents with Distinct Mechanisms of Action against Pseudomonas aeruginosa. Mar Drugs 2022; 20:92. [PMID: 35200622 PMCID: PMC8877608 DOI: 10.3390/md20020092] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 02/06/2023] Open
Abstract
The organization of bacteria in biofilms is one of the adaptive resistance mechanisms providing increased protection against conventional treatments. Thus, the search for new antibiofilm agents for medical purposes, especially of natural origin, is currently the object of much attention. The objective of the study presented here was to explore the potential of extracts derived from three seaweeds: the green Ulva lactuca, the brown Stypocaulon scoparium, and the red Pterocladiella capillacea, in terms of their antibiofilm activity against P. aeruginosa. After preparation of extracts by successive maceration in various solvents, their antibiofilm activity was evaluated on biofilm formation and on mature biofilms. Their inhibition and eradication abilities were determined using two complementary methods: crystal violet staining and quantification of adherent bacteria. The effect of active extracts on biofilm morphology was also investigated by epifluorescence microscopy. Results revealed a promising antibiofilm activity of two extracts (cyclohexane and ethyl acetate) derived from the green alga by exhibiting a distinct mechanism of action, which was supported by microscopic analyses. The ethyl acetate extract was further explored for its interaction with tobramycin and colistin. Interestingly, this extract showed a promising synergistic effect with tobramycin. First analyses of the chemical composition of extracts by GC-MS allowed for the identification of several molecules. Their implication in the interesting antibiofilm activity is discussed. These findings suggest the ability of the green alga U. lactuca to offer a promising source of bioactive candidates that could have both a preventive and a curative effect in the treatment of biofilms.
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Affiliation(s)
- Maya Rima
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; (M.R.); (J.T.); (L.L.)
- Laboratory of Applied Biotechnology, AZM Center for Research in Biotechnology and Its Applications, Doctoral School of Science and Technology, Lebanese University, El Mittein Street, Tripoli 1300, Lebanon;
| | - Jeanne Trognon
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; (M.R.); (J.T.); (L.L.)
| | - Laure Latapie
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; (M.R.); (J.T.); (L.L.)
| | - Asma Chbani
- Laboratory of Applied Biotechnology, AZM Center for Research in Biotechnology and Its Applications, Doctoral School of Science and Technology, Lebanese University, El Mittein Street, Tripoli 1300, Lebanon;
- Faculty of Public Health III, Lebanese University, Tripoli 1300, Lebanon
| | - Christine Roques
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; (M.R.); (J.T.); (L.L.)
- Bacteriology-Hygiene Department, Centre Hospitalier Universitaire, Hôpital Purpan, 31300 Toulouse, France
| | - Fatima El Garah
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; (M.R.); (J.T.); (L.L.)
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Bernal-Mercado AT, Juarez J, Valdez MA, Ayala-Zavala JF, Del-Toro-Sánchez CL, Encinas-Basurto D. Hydrophobic Chitosan Nanoparticles Loaded with Carvacrol against Pseudomonas aeruginosa Biofilms. Molecules 2022; 27:molecules27030699. [PMID: 35163966 PMCID: PMC8839698 DOI: 10.3390/molecules27030699] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/15/2022] [Accepted: 01/18/2022] [Indexed: 02/02/2023]
Abstract
Pseudomonas aeruginosa infections have become more challenging to treat and eradicate due to their ability to form biofilms. This study aimed to produce hydrophobic nanoparticles by grafting 11-carbon and three-carbon alkyl chains to a chitosan polymer as a platform to carry and deliver carvacrol for improving its antibacterial and antibiofilm properties. Carvacrol–chitosan nanoparticles showed ζ potential values of 10.5–14.4 mV, a size of 140.3–166.6 nm, and an encapsulation efficiency of 25.1–68.8%. Hydrophobic nanoparticles reduced 46–53% of the biomass and viable cells (7–25%) within P. aeruginosa biofilms. Diffusion of nanoparticles through the bacterial biofilm showed a higher penetration of nanoparticles created with 11-carbon chain chitosan than those formulated with unmodified chitosan. The interaction of nanoparticles with a 50:50 w/w phospholipid mixture at the air–water interface was studied, and values suggested that viscoelasticity and fluidity properties were modified. The modified nanoparticles significantly reduced viable P. aeruginosa in biofilms (0.078–2.0 log CFU·cm−2) and swarming motility (40–60%). Furthermore, the formulated nanoparticles reduced the quorum sensing in Chromobacterium violaceum. This study revealed that modifying the chitosan polarity to synthesize more hydrophobic nanoparticles could be an effective treatment against P. aeruginosa biofilms to decrease its virulence and pathogenicity, mainly by increasing their ability to interact with the membrane phospholipids and penetrate preformed biofilms.
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Affiliation(s)
- Ariadna Thalia Bernal-Mercado
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Mexico; (A.T.B.-M.); (C.L.D.-T.-S.)
| | - Josué Juarez
- Departamento de Física, Posgrado de Nanotecnología, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Mexico; (J.J.); (M.A.V.)
| | - Miguel Angel Valdez
- Departamento de Física, Posgrado de Nanotecnología, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Mexico; (J.J.); (M.A.V.)
| | - Jesus Fernando Ayala-Zavala
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, Hermosillo 83304, Mexico;
| | - Carmen Lizette Del-Toro-Sánchez
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Mexico; (A.T.B.-M.); (C.L.D.-T.-S.)
| | - David Encinas-Basurto
- Departamento de Física, Posgrado de Nanotecnología, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Mexico; (J.J.); (M.A.V.)
- Correspondence:
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Wang Y, Zheng Q, Li L, Pan L, Zhu H. Anti-Quorum-Sensing Activity of Tryptophan-Containing Cyclic Dipeptides. Mar Drugs 2022; 20:md20020085. [PMID: 35200615 PMCID: PMC8924889 DOI: 10.3390/md20020085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 02/04/2023] Open
Abstract
Quorum sensing (QS) can regulate the pathogenicity of bacteria and the production of some virulence factors. It is a promising target for screening to find anti-virulence agents in the coming post-antibiotics era. Cyclo (L-Trp-L-Ser), one variety of cyclic dipeptides (CDPs), isolated from a marine bacterium Rheinheimera aquimaris, exhibited anti-QS activity against Chromobacterium violaceum CV026 and Pseudomonas aeruginosa PAO1. Unlike the CDPs composed of phenylalanine or tyrosine, the anti-QS activity has been widely studied; however, cyclo (L-Trp-L-Ser) and derivatives, containing one tryptophan unit and one non-aromatic amino acid, have not been systematically explored. Herein, the cyclo (L-Trp-L-Ser) and seven derivatives were synthesized and evaluated. All tryptophane-contained CDPs were able to decrease the production of violacein in C.violaceum CV026 and predicted as binding within the same pocket of receptor protein CviR, but in lower binding energy compared with the natural ligand C6HSL. As for P. aeruginosa PAO1, owning more complicated QS systems, these CDPs also exhibited inhibitory effects on pyocyanin production, swimming motility, biofilm formation, and adhesion. These investigations suggested a promising way to keep the tryptophan untouched and make modifications on the non-aromatic unit to increase the anti-QS activity and decrease the cytotoxicity, thus developing a novel CDP-based anti-virulence agent.
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Moshynets OV, Baranovskyi TP, Iungin OS, Kysil NP, Metelytsia LO, Pokholenko I, Potochilova VV, Potters G, Rudnieva KL, Rymar SY, Semenyuta IV, Spiers AJ, Tarasyuk OP, Rogalsky SP. eDNA Inactivation and Biofilm Inhibition by the PolymericBiocide Polyhexamethylene Guanidine Hydrochloride (PHMG-Cl). Int J Mol Sci 2022; 23:ijms23020731. [PMID: 35054915 PMCID: PMC8775615 DOI: 10.3390/ijms23020731] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/03/2022] [Accepted: 01/03/2022] [Indexed: 01/05/2023] Open
Abstract
The choice of effective biocides used for routine hospital practice should consider the role of disinfectants in the maintenance and development of local resistome and how they might affect antibiotic resistance gene transfer within the hospital microbial population. Currently, there is little understanding of how different biocides contribute to eDNA release that may contribute to gene transfer and subsequent environmental retention. Here, we investigated how different biocides affect the release of eDNA from mature biofilms of two opportunistic model strains Pseudomonas aeruginosa ATCC 27853 (PA) and Staphylococcus aureus ATCC 25923 (SA) and contribute to the hospital resistome in the form of surface and water contaminants and dust particles. The effect of four groups of biocides, alcohols, hydrogen peroxide, quaternary ammonium compounds, and the polymeric biocide polyhexamethylene guanidine hydrochloride (PHMG-Cl), was evaluated using PA and SA biofilms. Most biocides, except for PHMG-Cl and 70% ethanol, caused substantial eDNA release, and PHMG-Cl was found to block biofilm development when used at concentrations of 0.5% and 0.1%. This might be associated with the formation of DNA–PHMG-Cl complexes as PHMG-Cl is predicted to bind to AT base pairs by molecular docking assays. PHMG-Cl was found to bind high-molecular DNA and plasmid DNA and continued to inactivate DNA on surfaces even after 4 weeks. PHMG-Cl also effectively inactivated biofilm-associated antibiotic resistance gene eDNA released by a pan-drug-resistant Klebsiella strain, which demonstrates the potential of a polymeric biocide as a new surface-active agent to combat the spread of antibiotic resistance in hospital settings.
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Affiliation(s)
- Olena V. Moshynets
- Biofilm Study Group, Department of Cell Regulatory Mechanisms, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnoho Str., 03680 Kiev, Ukraine; (O.S.I.); (I.P.); (S.Y.R.)
- Correspondence: (O.V.M.); (S.P.R.)
| | - Taras P. Baranovskyi
- Department of Dermatovenerology, Allergology, Clinical and Laboratory Immunology, Shupyk National Healthcare University of Ukraine, 9 Dorohozhytska Str., 03680 Kiev, Ukraine;
- Kyiv Regional Clinical Hospital, 1 Baggovutivska Street, 04107 Kiev, Ukraine; (V.V.P.); (K.L.R.)
| | - Olga S. Iungin
- Biofilm Study Group, Department of Cell Regulatory Mechanisms, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnoho Str., 03680 Kiev, Ukraine; (O.S.I.); (I.P.); (S.Y.R.)
- Department of Biotechnology, Leather and Fur, Faculty of Chemical and Biopharmaceutical Technologies, Kyiv National University of Technologies and Design, Nemyrovycha-Danchenka Street, 2, 01011 Kiev, Ukraine
| | - Nadiia P. Kysil
- National Children’s Specialized Hospital “Okhmatdyt”, 28/1 Chornovola Str., 01135 Kiev, Ukraine;
| | - Larysa O. Metelytsia
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 50 Kharkivske Schose, 01135 Kiev, Ukraine; (L.O.M.); (I.V.S.); (O.P.T.)
| | - Ianina Pokholenko
- Biofilm Study Group, Department of Cell Regulatory Mechanisms, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnoho Str., 03680 Kiev, Ukraine; (O.S.I.); (I.P.); (S.Y.R.)
| | - Viktoria V. Potochilova
- Kyiv Regional Clinical Hospital, 1 Baggovutivska Street, 04107 Kiev, Ukraine; (V.V.P.); (K.L.R.)
| | - Geert Potters
- Antwerp Maritime Academy, Noordkasteel Oost 6, 2030 Antwerp, Belgium;
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Kateryna L. Rudnieva
- Kyiv Regional Clinical Hospital, 1 Baggovutivska Street, 04107 Kiev, Ukraine; (V.V.P.); (K.L.R.)
| | - Svitlana Y. Rymar
- Biofilm Study Group, Department of Cell Regulatory Mechanisms, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnoho Str., 03680 Kiev, Ukraine; (O.S.I.); (I.P.); (S.Y.R.)
| | - Ivan V. Semenyuta
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 50 Kharkivske Schose, 01135 Kiev, Ukraine; (L.O.M.); (I.V.S.); (O.P.T.)
| | - Andrew J. Spiers
- School of Applied Sciences, Abertay University, Bell Street, Dundee DD1 1HG, UK;
| | - Oksana P. Tarasyuk
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 50 Kharkivske Schose, 01135 Kiev, Ukraine; (L.O.M.); (I.V.S.); (O.P.T.)
| | - Sergiy P. Rogalsky
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 50 Kharkivske Schose, 01135 Kiev, Ukraine; (L.O.M.); (I.V.S.); (O.P.T.)
- Correspondence: (O.V.M.); (S.P.R.)
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Khadraoui N, Essid R, Jallouli S, Damergi B, Ben Takfa I, Abid G, Jedidi I, Bachali A, Ayed A, Limam F, Tabbene O. Antibacterial and antibiofilm activity of Peganum harmala seed extract against multidrug-resistant Pseudomonas aeruginosa pathogenic isolates and molecular mechanism of action. Arch Microbiol 2022; 204:133. [PMID: 34999965 DOI: 10.1007/s00203-021-02747-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/24/2021] [Accepted: 12/27/2021] [Indexed: 12/21/2022]
Abstract
Biofilm formation of the opportunistic pathogen Pseudomonas (P). aeruginosa is one of the major global challenges to control nosocomial infections due to their high resistance to antimicrobials and host defense mechanisms. The present study aimed to assess the antibacterial and the antibiofilm activities of Peganum (P). harmala seed extract against multidrug-resistant P. aeruginosa isolates. Chemical identification of the active compound and determination of its molecular mechanism of action were also investigated. Results showed that P. harmala n-butanol "n-BuOH" extract exhibited antibacterial activity against multidrug-resistant P. aeruginosa isolates. This extract was even more active than conventional antibiotics cefazolin and vaamox when tested against three P. aeruginosa multidrug-resistant isolates. In addition, P. harmala n-BuOH extract exhibited potent bactericidal activity against PAO1 strain at MIC value corresponding to 500 µg/mL and attained 100% killing effect at 24 h of incubation. Furthermore, P. harmala n-BuOH extract showed an antibiofilm activity against P. aeruginosa PAO1 and exhibited 80.43% inhibition at sub-inhibitory concentration. The extract also eradicated 83.99% of the biofilm-forming bacteria. The active compound was identified by gas chromatography-mass spectrometry as an indole alkaloid harmaline. Transcriptomic analysis showed complete inhibition of the biofilm-related gene pilA when PAO1 cells were treated with harmaline. Our results revealed that P. harmala seed extract and its active compound harmaline could be considered as a candidate for a new treatment of multidrug-resistant P. aeruginosa pathogens-associated biofilm infections.
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Affiliation(s)
- Nadine Khadraoui
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
- Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia
| | - Rym Essid
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Selim Jallouli
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Bilel Damergi
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
- Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia
| | - Iheb Ben Takfa
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Ghassen Abid
- Laboratory of Legumes and Sustainable Agrosystems, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Ines Jedidi
- Water and Food Control Laboratory, National Center of Salmonella, Shigella, Vibrio-Enteropathogens-Pasteur Institute of Tunis-Belvédère, Tunis, Tunisia
| | - Asma Bachali
- Laboratory of Clinical Biochemistry, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
| | - Ameni Ayed
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Ferid Limam
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Olfa Tabbene
- Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP-901, 2050, Hammam-Lif, Tunisia.
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Kracalik I, Ham DC, McAllister G, Smith AR, Vowles M, Kauber K, Zambrano M, Rodriguez G, Garner K, Chorbi K, Cassidy PM, McBee S, Stoney RJ, Moser K, Villarino ME, Zazueta OE, Bhatnagar A, Sula E, Stanton RA, Brown AC, Halpin AL, Epstein L, Walters MS. Extensively Drug-Resistant Carbapenemase-Producing Pseudomonas aeruginosa and Medical Tourism from the United States to Mexico, 2018-2019. Emerg Infect Dis 2022; 28:51-61. [PMID: 34932447 PMCID: PMC8714193 DOI: 10.3201/eid2801.211880] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Carbapenem-resistant Pseudomonas aeruginosa (CRPA) producing the Verona integron‒encoded metallo-β-lactamase (VIM) are highly antimicrobial drug-resistant pathogens that are uncommon in the United States. We investigated the source of VIM-CRPA among US medical tourists who underwent bariatric surgery in Tijuana, Mexico. Cases were defined as isolation of VIM-CRPA or CRPA from a patient who had an elective invasive medical procedure in Mexico during January 2018‒December 2019 and within 45 days before specimen collection. Whole-genome sequencing of isolates was performed. Thirty-eight case-patients were identified in 18 states; 31 were operated on by surgeon 1, most frequently at facility A (27/31 patients). Whole-genome sequencing identified isolates linked to surgeon 1 were closely related and distinct from isolates linked to other surgeons in Tijuana. Facility A closed in March 2019. US patients and providers should acknowledge the risk for colonization or infection after medical tourism with highly drug-resistant pathogens uncommon in the United States.
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Affiliation(s)
| | | | - Gillian McAllister
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Amanda R. Smith
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Maureen Vowles
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Kelly Kauber
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Melba Zambrano
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Gretchen Rodriguez
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Kelley Garner
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Kaitlyn Chorbi
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - P. Maureen Cassidy
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Shannon McBee
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Rhett J. Stoney
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Kathleen Moser
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Margarita E. Villarino
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Oscar E. Zazueta
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Amelia Bhatnagar
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Erisa Sula
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Richard A. Stanton
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Allison C. Brown
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Alison L. Halpin
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Lauren Epstein
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - Maroya Spalding Walters
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
| | - for the Verona Integron-Encoded Metallo-β-Lactamase–Producing Carbapenem-Resistant Pseudomonas aeruginosa Medical Tourism Investigation Team2
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA (I. Kracalik, D. Cal Ham, G. McAllister, R.J. Stoney, K. Moser, M.E. Villarino, A. Bhatnagar, E. Sula, R.A. Stanton, A.C. Brown, A.L. Halpin, L. Epstein, M. Spalding Walters)
- Utah Department of Health, Salt Lake City, Utah, USA (A.R. Smith, M. Vowles); Washington State Department of Health, Olympia, Washington, USA (K. Kauber)
- Texas Department of State Health Services, Austin, Texas, USA (M. Zambrano, G. Rodriguez)
- Arkansas Department of Health, Little Rock, Arkansas, USA (K. Garner)
- Arizona Department of Health Services, Phoenix, Arizona, USA (K. Chorbi)
- Oregon Health Authority, Portland, Oregon, USA (P.M. Cassidy)
- West Virginia Department of Health and Human Resources, Charleston, West Virginia, USA (S. McBee)
- Secretaría de Salud de Baja California, Mexicali, Mexico (O.E. Zazueta)
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Cao M, Wang S, Hu J, Lu B, Wang Q, Zang S. Silver Cluster-Porphyrin-Assembled Materials as Advanced Bioprotective Materials for Combating Superbacteria. Adv Sci (Weinh) 2022; 9:e2103721. [PMID: 34761563 PMCID: PMC8805555 DOI: 10.1002/advs.202103721] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/02/2021] [Indexed: 06/13/2023]
Abstract
Superbugs are bacteria that have grown resistant to most antibiotics, seriously threating the health of people. Silver (Ag) nanoparticles are known to exert a wide-spectrum antimicrobial property, yet remains challenging against superbugs. Here, Ag clusters are assembled using porphyrin-based linkers and a novel framework structure (Ag9 -AgTPyP) is produced, in which nine-nuclearity Ag9 clusters are uniformly separated by Ag-centered porphyrin units (AgTPyP) in two dimensions, demonstrating open permeant porosity. Ag9 -AgTPyP eliminates over 99.99999% and 99.999% methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa (P. aeruginosa) within 2 h upon visible-light irradiation, which are superior to a majority of bacteria inactivation photocatalysts. The novel-established long-term charge-transfer states from AgTPyP to adjacent Ag9 cluster that has preferential affinity to O2 greatly promote reactive oxygen species (ROS) production efficiency; and its unique framework accelerates the ROS transportation. Personal protective equipment (masks and protective suits) incorporating Ag9 -AgTPyP film also shows excellent performances against superbugs. This superbugs-killing efficiency is unprecedented among silver complexes and porphyrin derivatives. Utilizing efficient photogenerated electrons and holes between metal cluster and linkers can open up new interests of research in photocatalytic areas.
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Affiliation(s)
- Man Cao
- Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Shan Wang
- Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Jia‐Hua Hu
- Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Bing‐Huai Lu
- Laboratory of Clinical Microbiology and Infectious DiseasesDepartment of Pulmonary and Critical Care MedicineNational Clinical Research Center for Respiratory DiseasesChina‐Japan Friendship HospitalBeijing100029China
- China Guangdong Key Laboratory for Emerging Infectious DiseasesNational Clinical Research Center for Infectious DiseasesShenzhen Third People's HospitalSouthern University of Science and TechnologyShenzhen518055China
| | - Qian‐You Wang
- Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Shuang‐Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional MaterialsHenan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
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47
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Jiang R, Yi Y, Hao L, Chen Y, Tian L, Dou H, Zhao J, Ming W, Ren L. Thermoresponsive Nanostructures: From Mechano-Bactericidal Action to Bacteria Release. ACS Appl Mater Interfaces 2021; 13:60865-60877. [PMID: 34905683 DOI: 10.1021/acsami.1c16487] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Overuse of antibiotics can increase the risk of notorious antibiotic resistance in bacteria, which has become a growing public health concern worldwide. Featured with the merit of mechanical rupture of bacterial cells, the bioinspired nanopillars are promising alternatives to antibiotics for combating bacterial infections while avoiding antibacterial resistance. However, the resident dead bacterial cells on nanopillars may greatly impair their bactericidal capability and ultimately impede their translational potential toward long-term applications. Here, we show that the functions of bactericidal nanopillars can be significantly broadened by developing a hybrid thermoresponsive polymer@nanopillar-structured surface, which retains all of the attributes of pristine nanopillars and adds one more: releasing dead bacteria. We fabricate this surface through coaxially decorating mechano-bactericidal ZnO nanopillars with thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) brushes. Combining the benefits of ZnO nanopillars and PNIPAAm chains, the antibacterial performances can be controllably regulated between ultrarobust mechano-bactericidal action (∼99%) and remarkable bacteria-releasing efficiency (∼98%). Notably, both the mechanical sterilization against the live bacteria and the controllable release for the pinned dead bacteria solely stem from physical actions, stimulating the exploration of intelligent structure-based bactericidal surfaces with persistent antibacterial properties without the risk of triggering drug resistance.
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Affiliation(s)
- Rujian Jiang
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Yaozhen Yi
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Lingwan Hao
- College of Chemistry, Jilin University, Changchun 130022, China
| | - Yuxiang Chen
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Limei Tian
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Haixu Dou
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Jie Zhao
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Weihua Ming
- Department of Chemistry and Biochemistry, Georgia Southern University, Statesboro, Georgia 30460, United States
| | - Luquan Ren
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
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48
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Savinova T, Samchenko A, Bocharova Y, Mayansky N, Chebotar I. Computer Program for Detection and Analyzing the Porin-Mediated Antibiotic Resistance of Bacteria. Sovrem Tekhnologii Med 2021; 13:15-22. [PMID: 35265355 PMCID: PMC8858402 DOI: 10.17691/stm2021.13.6.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this work was to develop a new software tool for identifying gene mutations that determine the porin-mediated resistance to antibiotics in gram-negative bacteria and to demonstrate the functionality of this program by detecting porin-mediated resistance to carbapenems in clinical isolates of Pseudomonas aeruginosa.
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Affiliation(s)
- T.A. Savinova
- Leading Researcher, Laboratory of Molecular Microbiology; Pirogov National Research Medical University, 1 Ostrovityanova St., Moscow, 117997, Russia
| | - A.A. Samchenko
- Researcher, Laboratory of Structure and Dynamics of Biomolecular Systems; Institute of Cell Biophysics of the Russian Academy of Sciences — Subdivision of the Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 3 Institutskaya St., Moscow Region, Pushchino, 142290, Russia
| | - Y.A. Bocharova
- Senior Researcher, Laboratory of Molecular Microbiology; Pirogov National Research Medical University, 1 Ostrovityanova St., Moscow, 117997, Russia
| | - N.A. Mayansky
- Professor of the Russian Academy of Sciences, Head of the Center for Laboratory Diagnostics, Russian Children’s Clinical Hospital; Pirogov National Research Medical University, 1 Ostrovityanova St., Moscow, 117997, Russia
| | - I.V. Chebotar
- Head of the Laboratory of Molecular Microbiology; Pirogov National Research Medical University, 1 Ostrovityanova St., Moscow, 117997, Russia
- Corresponding author: Igor V. Chebotar, e-mail:
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49
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Korzekwa K, Kędziora A, Stańczykiewicz B, Bugla-Płoskońska G, Wojnicz D. Benefits of Usage of Immobilized Silver Nanoparticles as Pseudomonas aeruginosa Antibiofilm Factors. Int J Mol Sci 2021; 23:284. [PMID: 35008720 PMCID: PMC8745484 DOI: 10.3390/ijms23010284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/17/2021] [Accepted: 12/24/2021] [Indexed: 12/12/2022] Open
Abstract
The aim of this study was to assess the beneficial inhibitory effect of silver nanoparticles immobilized on SiO2 or TiO2 on biofilm formation by Pseudomonas aeruginosa-one of the most dangerous pathogens isolated from urine and bronchoalveolar lavage fluid of patients hospitalized in intensive care units. Pure and silver doped nanoparticles of SiO2 and TiO2 were prepared using a novel modified sol-gel method. Ten clinical strains of P. aeruginosa and the reference PAO1 strain were used. The minimal inhibitory concentration (MIC) was determined by the broth microdilution method. The minimal biofilm inhibitory concentration (MBIC) and biofilm formation were assessed by colorimetric assay. Bacterial enumeration was used to assess the viability of bacteria in the biofilm. Silver nanoparticles immobilized on the SiO2 and TiO2 indicated high antibacterial efficacy against P. aeruginosa planktonic and biofilm cultures. TiO2/Ag0 showed a better bactericidal effect than SiO2/Ag0. Our results indicate that the inorganic compounds (SiO2, TiO2) after nanotechnological modification may be successfully used as antibacterial agents against multidrug-resistant P. aeruginosa strains.
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Affiliation(s)
- Kamila Korzekwa
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, 50-137 Wroclaw, Poland; (A.K.); (G.B.-P.)
| | - Anna Kędziora
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, 50-137 Wroclaw, Poland; (A.K.); (G.B.-P.)
| | | | - Gabriela Bugla-Płoskońska
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, 50-137 Wroclaw, Poland; (A.K.); (G.B.-P.)
| | - Dorota Wojnicz
- Department of Biology and Medical Parasitology, Wroclaw Medical University, 50-345 Wroclaw, Poland
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50
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Chittasupho C, Manthaisong A, Okonogi S, Tadtong S, Samee W. Effects of Quercetin and Curcumin Combination on Antibacterial, Antioxidant, In Vitro Wound Healing and Migration of Human Dermal Fibroblast Cells. Int J Mol Sci 2021; 23:ijms23010142. [PMID: 35008566 PMCID: PMC8745450 DOI: 10.3390/ijms23010142] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 12/29/2022] Open
Abstract
Wound healing impairment due to a postponed, incomplete, or uncoordinated healing process has been a challenging clinical problem. Much research has focused on wound care, particularly on discovery of new therapeutic approaches for acute and chronic wounds. This study aims to evaluate the effect of the combination of quercetin and curcuminoids at three different ratios on the antimicrobial, antioxidant, cell migration and wound healing properties. The antioxidant activities of quercetin, curcuminoids and the mixtures were tested by DPPH and ABTS free radical scavenging assays. The disc diffusion method was performed to determine the antibacterial activities of quercetin, curcuminoids and the mixtures against S. aureus and P. aeruginosa. The cytotoxicity and cell migratory enhancing effects of quercetin, curcuminoids and the mixtures against human dermal fibroblasts were investigated by MTT assay, scratch assay and Transwell migration assay, respectively. The results showed the synergism of the quercetin and curcuminoid combination to inhibit the growth of S. aureus and P. aeruginosa, with the inhibition zone ranging from 7.06 ± 0.25 to 8.78 ± 0.38 mm, respectively. The DPPH free radical scavenging assay demonstrated that the combination of quercetin and curcuminoids yielded lower IC50 values (15.38–23.70 µg/mL) than curcuminoids alone (25.75 µg/mL). Quercetin and a 3:1 quercetin/curcuminoid mixture at non-toxic concentrations showed the ability to stimulate the migration of fibroblasts across the matrix, whereas only quercetin alone accelerated the wound closure of fibroblasts. In conclusion, the mixture of quercetin and curcuminoids at a 3:1 ratio was the best formulations for use in wound healing due to the antimicrobial, antioxidant and cell-migration-enhancing activities.
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Affiliation(s)
- Chuda Chittasupho
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Mueang, Chiang Mai 50200, Thailand; (C.C.); (S.O.)
- Research Center of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Amornrat Manthaisong
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Srinakharinwirot University, Ongkharak, Nahon Nayok 26120, Thailand;
| | - Siriporn Okonogi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Mueang, Chiang Mai 50200, Thailand; (C.C.); (S.O.)
- Research Center of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sarin Tadtong
- Department of Pharmacognosy, Faculty of Pharmacy, Srinakharinwirot University, Ongkharak, Nahon Nayok 26120, Thailand
- Correspondence: (S.T.); (W.S.); Tel.: +66-3739-5094 (S.T. & W.S.); Fax: +66-3739-5096 (S.T. & W.S.)
| | - Weerasak Samee
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Srinakharinwirot University, Ongkharak, Nahon Nayok 26120, Thailand;
- Correspondence: (S.T.); (W.S.); Tel.: +66-3739-5094 (S.T. & W.S.); Fax: +66-3739-5096 (S.T. & W.S.)
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