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Kherroubi L, Bacon J, Rahman KM. Navigating fluoroquinolone resistance in Gram-negative bacteria: a comprehensive evaluation. JAC Antimicrob Resist 2024; 6:dlae127. [PMID: 39144447 PMCID: PMC11323783 DOI: 10.1093/jacamr/dlae127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 07/04/2024] [Indexed: 08/16/2024] Open
Abstract
Since the introduction of quinolone and fluoroquinolone antibiotics to treat bacterial infections in the 1960s, there has been a pronounced increase in the number of bacterial species that have developed resistance to fluoroquinolone treatment. In 2017, the World Health Organization established a priority list of the most critical Gram-negative resistant pathogens. These included Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Escherichia coli. In the last three decades, investigations into the mechanisms of fluoroquinolone resistance have revealed that mutations in the target enzymes of fluoroquinolones, DNA gyrase or topoisomerase IV, are the most prevalent mechanism conferring high levels of resistance. Alterations to porins and efflux pumps that facilitate fluoroquinolone permeation and extrusion across the bacterial cell membrane also contribute to the development of resistance. However, there is a growing observation of novel mutants with newer generations of fluoroquinolones, highlighting the need for novel treatments. Currently, steady progress has been made in the development of novel antimicrobial agents that target DNA gyrase or topoisomerase IV through different avenues than current fluoroquinolones to prevent target-mediated resistance. Therefore, an updated review of the current understanding of fluoroquinolone resistance within the literature is imperative to aid in future investigations.
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Affiliation(s)
- Linda Kherroubi
- School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, UK
| | - Joanna Bacon
- Discovery Group, Vaccine Development and Evaluation Centre, UK Health Security Agency, Porton Down, Salisbury SP4 0JG, UK
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Aboelenin AM, El-Mowafy M, Saleh NM, Shaaban MI, Barwa R. Ciprofloxacin- and levofloxacin-loaded nanoparticles efficiently suppressed fluoroquinolone resistance and biofilm formation in Acinetobacter baumannii. Sci Rep 2024; 14:3125. [PMID: 38326515 PMCID: PMC10850473 DOI: 10.1038/s41598-024-53441-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 01/31/2024] [Indexed: 02/09/2024] Open
Abstract
The spread of fluoroquinolone (FQ) resistance in Acinetobacter baumannii represents a critical health threat. This study aims to overcome FQ resistance in A. baumannii via the formulation of polymeric nanoFQs. Herein, 80 A. baumannii isolates were obtained from diverse clinical sources. All A. baumannii isolates showed high resistance to most of the investigated antimicrobials, including ciprofloxacin (CIP) and levofloxacin (LEV) (97.5%). FQ resistance-determining regions of the gyrA and parC genes were the most predominant resistant mechanism, harbored by 69 (86.3%) and 75 (93.8%) of the isolates, respectively. Additionally, plasmid-mediated quinolone resistance genes aac(6')-Ib and qnrS were detected in 61 (76.3%) and 2 (2.5%) of the 80 isolates, respectively. The CIP- and LEV-loaded poly ε-caprolactone (PCL) nanoparticles, FCIP and FLEV, respectively, showed a 1.5-6- and 6-12-fold decrease in the MIC, respectively, against the tested isolates. Interestingly, the time kill assay demonstrated that MICs of FCIP and FLEV completely killed A. baumannii isolates after 5-6 h of treatment. Furthermore, FCIP and FLEV were found to be efficient in overcoming the FQ resistance mediated by the efflux pumps in A. baumannii isolates as revealed by decreasing the MIC four-fold lower than that of free CIP and LEV, respectively. Moreover, FCIP and FLEV at 1/2 and 1/4 MIC significantly decreased biofilm formation by 47-93% and 69-91%, respectively. These findings suggest that polymeric nanoparticles can restore the effectiveness of FQs and represent a paradigm shift in the fight against A. baumannii isolates.
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Affiliation(s)
- Alaa M Aboelenin
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Mohammed El-Mowafy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Noha M Saleh
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Mona I Shaaban
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt.
| | - Rasha Barwa
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt.
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Abbasi E, van Belkum A, Ghaznavi-Rad E. High frequency of carbapenemase in extensively drug-resistant Acinetobacter baumannii isolates in central Iran. World J Microbiol Biotechnol 2023; 39:321. [PMID: 37755552 DOI: 10.1007/s11274-023-03778-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/22/2023] [Indexed: 09/28/2023]
Abstract
OBJECTIVES We assessed the frequency of occurrence for infections caused by wild-type A. baumannii, multidrug-resistant (MDR) or XDR A. baumannii, and CRAB. We detected different antibiotic resistance genes in the genomes of infectious A. baumannii strains from central Iran. METHODS This study investigated 546 clinical patient samples for the presence of A. baumannii by using conventional culture methods and PCR. Antibiotic resistance profiles, and the phenotypic and genotypic characteristics of various antibiotic genes were analyzed. RESULTS Out of 546 samples, 87 (15.9%) A. baumannii isolates were obtained using culture and all culture positive samples were also positive by PCR. The most effective antibiotics were polymyxin B (n = 84 strains) (96.6% susceptibility), colistin (n = 81) (93.1%), and ampicillin/sulbactam (n = 18) (20.7%). All clinical A. baumannii isolates were ESBL-positive. The number of CRAB was 84 (96.5%). All CRAB isolates were both MDR and XDR. Of all CRAB isolates, 78 out of 84 (92.4%) produced metallo-β-lactamase (MBL) by phenotypic diagnosis. The most abundant genes were blaPER (32/87; 36.7%), blaTEM (29/87; 33.3%), blaVEB (26/87; 29.8%) for ESBL and Ambler class D β -lactamases included blaOXA-23 (69/84; 82.1%), blaOXA-24 (46/84; 54.7%), MBLs included blaVIM (51/84; 60.7%), and blaIMP (28/84; 33.3%) for carbapenemase. CONCLUSION High frequencies of XDR A. baumannii and CRAB (96.5%) were detected in central Iran. Quick and accurate diagnosis, appropriate isolation of patients colonized or infected by CRAB isolates, application of accurate and effective infection control policies and programs, and appropriate preventive measures are deemed helpful in preventing the further spread of these resistant and clinically highly relevant strains.
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Affiliation(s)
- Elnaz Abbasi
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- , Khomein, Iran
| | | | - Ehsanollah Ghaznavi-Rad
- Molecular and Medicine Research Center, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.
- Department of Microbiology & Immunology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.
- , Arak, Iran.
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Hamed SM, Elkhatib WF, Brangsch H, Gesraha AS, Moustafa S, Khater DF, Pletz MW, Sprague LD, Neubauer H, Wareth G. Acinetobacter baumannii Global Clone-Specific Resistomes Explored in Clinical Isolates Recovered from Egypt. Antibiotics (Basel) 2023; 12:1149. [PMID: 37508245 PMCID: PMC10376554 DOI: 10.3390/antibiotics12071149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
Acinetobacter baumannii (A. baumannii) is a highly problematic pathogen with an enormous capacity to acquire or upregulate antibiotic drug resistance determinants. The genomic epidemiology and resistome structure of 46 A. baumannii clinical isolates were studied using whole-genome sequencing. The isolates were chosen based on reduced susceptibility to at least three classes of antimicrobial compounds and were initially identified using MALDI-TOF/MS, followed by polymerase chain reaction amplification of blaOXA-51-like genes. The susceptibility profiles were determined using a broth microdilution assay. Multi-, extensive-, and pan-drug resistance was shown by 34.8%, 63.0%, and 2.2% of the isolates, respectively. These were most susceptible to colistin (95.7%), amikacin, and trimethoprim/sulfamethoxazole (32.6% each), while only 26.1% of isolates were susceptible to tigecycline. In silico multi-locus sequence typing revealed 8 Pasteur and 22 Oxford sequence types (STs) including four novel STs (STOxf 2805, 2806, 2807, and 2808). The majority of the isolates belonged to Global Clone (GC) 2 (76.4%), GC5 (19.6%), GC4 (6.5%), GC9 (4.3%), and GC7 (2.2%) lineages. An extensive resistome potentially conferring resistance to the majority of the tested antimicrobials was identified in silico. Of all known carbapenem resistance genes, blaOXA-23 was carried by most of the isolates (69.6%), followed by ISAba1-amplified blaADC (56.5%), blaNDM-1 and blaGES-11 (21.7% each), and blaGES-35 (2.2%) genes. A significant correlation was found between carbapenem resistance and carO mutations, which were evident in 35 (76.0%) isolates. A lower proportion of carbapenem resistance was noted for strains possessing both blaOXA-23- and blaGES-11. Amikacin resistance was most probably mediated by armA, aac(6')-Ib9, and aph(3')-VI, most commonly coexisting in GC2 isolates. No mutations were found in pmrABC or lpxACD operons in the colistin-resistant isolates. Tigecycline resistance was associated with adeS (N268Y) and baeS (A436T) mutations. While the lineage-specific distribution of some genes (e.g., blaADC and blaOXA-51-like alleles) was evident, some resistance genes, such as blaOXA-23 and sul1, were found in all GCs. The data generated here highlight the contribution of five GCs in A. baumannii infections in Egypt and enable the comprehensive analysis of GC-specific resistomes, thus revealing the dissemination of the carbapenem resistance gene blaOXA-23 in isolates encompassing all GCs.
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Affiliation(s)
- Samira M Hamed
- Department of Microbiology and Immunology, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza 12451, Egypt
| | - Walid F Elkhatib
- Microbiology and Immunology Department, Faculty of Pharmacy, Ain Shams University, African Union Organization Street, Cairo 11566, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Galala University, Suez 43727, Egypt
| | - Hanka Brangsch
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institut, 07743 Jena, Germany
| | - Ahmed S Gesraha
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tanta University, Tanta 31511, Egypt
| | - Shawky Moustafa
- Faculty of Veterinary Medicine, Benha University, Toukh 13736, Egypt
| | - Dalia F Khater
- Tanta Laboratory, Animal Health Research Institute, Agricultural Research Center, Tanta 31511, Egypt
| | - Mathias W Pletz
- Institute of Infectious Diseases and Infection Control, Jena University Hospital, 07747 Jena, Germany
| | - Lisa D Sprague
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institut, 07743 Jena, Germany
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institut, 07743 Jena, Germany
| | - Gamal Wareth
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institut, 07743 Jena, Germany
- Institute of Infectious Diseases and Infection Control, Jena University Hospital, 07747 Jena, Germany
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Harding SV, Barnes KB, Hawser S, Bentley CE, Vente A. In Vitro Activity of Finafloxacin against Panels of Respiratory Pathogens. Antibiotics (Basel) 2023; 12:1096. [PMID: 37508192 PMCID: PMC10376497 DOI: 10.3390/antibiotics12071096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
This study determined the in vitro activity of finafloxacin against panels of bacterial strains, representative of those associated with infection in cystic fibrosis patients and predominately isolated from clinical cases of respiratory disease. Many of these isolates were resistant to various antimicrobials evaluated including the aminoglycosides, cephalosporins, carbapenems and fluoroquinolones. Broth microdilution assays were performed at neutral and acidic pH, to determine antimicrobial activity. Finafloxacin demonstrated superior activity at reduced pH for all of the bacterial species investigated, highlighting the requirement to determine the activity of antimicrobials in host-relevant conditions.
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Affiliation(s)
- Sarah V Harding
- Defence Science and Technology Laboratory, Salisbury SP4 0JQ, UK
- Department of Respiratory Sciences, University of Leicester, Leicester LE1 7RH, UK
| | - Kay B Barnes
- Defence Science and Technology Laboratory, Salisbury SP4 0JQ, UK
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Wu HJ, Xiao ZG, Lv XJ, Huang HT, Liao C, Hui CY, Xu Y, Li HF. Drug‑resistant Acinetobacter baumannii: From molecular mechanisms to potential therapeutics (Review). Exp Ther Med 2023; 25:209. [PMID: 37090073 PMCID: PMC10119666 DOI: 10.3892/etm.2023.11908] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 02/24/2023] [Indexed: 04/25/2023] Open
Abstract
Bacterial drug resistance is increasingly becoming an important problem that needs to be solved urgently in modern clinical practices. Infection caused by Acinetobacter baumannii is a serious threat to the life and health of patients. The drug resistance rate of Acinetobacter baumannii strains is increasing, thus research on the drug resistance of Acinetobacter baumannii has also seen an increase. When patients are infected with drug-resistant Acinetobacter baumannii, the availability of suitable antibiotics commonly used in clinical practices is becoming increasingly limited and the prognosis of patients is worsening. Studying the molecular mechanism of the drug resistance of Acinetobacter baumannii is fundamental to solving the problem of drug-resistant Acinetobacter baumannii and potentially other 'super bacteria'. Drug resistance mechanisms primarily include enzymes, membrane proteins, efflux pumps and beneficial mutations. Research on the underlying mechanisms provides a theoretical basis for the use and development of antibiotics and the development of novel treatment methods.
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Affiliation(s)
- Hao-Jia Wu
- Clinical College of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Zhi-Gang Xiao
- Department of Orthopedics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
| | - Xiao-Juan Lv
- Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, P.R. China
| | - Hai-Tang Huang
- Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, P.R. China
| | - Chu Liao
- Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, P.R. China
| | - Chen-Yang Hui
- Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, P.R. China
| | - Yue Xu
- Clinical College of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Heng-Fei Li
- Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan, Hubei 430061, P.R. China
- Department of Infection, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, Hubei 430074, P.R. China
- Correspondence to: Professor Heng-Fei Li, Department of Hepatology, Hubei Key Laboratory of The Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, Room 4, Garden Hill, Wuchang, Wuhan, Hubei 430061, P.R. China
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Acinetobacter baumannii from Samples of Commercially Reared Turkeys: Genomic Relationships, Antimicrobial and Biocide Susceptibility. Microorganisms 2023; 11:microorganisms11030759. [PMID: 36985332 PMCID: PMC10052703 DOI: 10.3390/microorganisms11030759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023] Open
Abstract
Acinetobacter baumannii is especially known as a cause of nosocomial infections worldwide. It shows intrinsic and acquired resistances to numerous antimicrobial agents, which can render the treatment difficult. In contrast to the situation in human medicine, there are only few studies focusing on A. baumannii among livestock. In this study, we have examined 643 samples from turkeys reared for meat production, including 250 environmental and 393 diagnostic samples, for the presence of A. baumannii. In total, 99 isolates were identified, confirmed to species level via MALDI-TOF-MS and characterised with pulsed-field gel electrophoresis. Antimicrobial and biocide susceptibility was tested by broth microdilution methods. Based on the results, 26 representative isolates were selected and subjected to whole-genome sequencing (WGS). In general, A. baumannii was detected at a very low prevalence, except for a high prevalence of 79.7% in chick-box-papers (n = 118) of one-day-old turkey chicks. The distributions of the minimal inhibitory concentration values were unimodal for the four biocides and for most of the antimicrobial agents tested. WGS revealed 16 Pasteur and 18 Oxford sequence types, including new ones. Core genome MLST highlighted the diversity of most isolates. In conclusion, the isolates detected were highly diverse and still susceptible to many antimicrobial agents.
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Multidrug-Resistant Acinetobacter baumannii Infections in the United Kingdom versus Egypt: Trends and Potential Natural Products Solutions. Antibiotics (Basel) 2023; 12:antibiotics12010077. [PMID: 36671278 PMCID: PMC9854726 DOI: 10.3390/antibiotics12010077] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023] Open
Abstract
Acinetobacter baumannii is a problematic pathogen of global concern. It causes multiple types of infection, especially among immunocompromised individuals in intensive care units. One of the most serious concerns related to this pathogen is its ability to become resistant to almost all the available antibiotics used in clinical practice. Moreover, it has a great tendency to spread this resistance at a very high rate, crossing borders and affecting healthcare settings across multiple economic levels. In this review, we trace back the reported incidences in the PubMed and the Web of Science databases of A. baumannii infections in both the United Kingdom and Egypt as two representative examples for countries of two different economic levels: high and low-middle income countries. Additionally, we compare the efforts made by researchers from both countries to find solutions to the lack of available treatments by looking into natural products reservoirs. A total of 113 studies reporting infection incidence were included, with most of them being conducted in Egypt, especially the recent ones. On the one hand, this pathogen was detected in the UK many years before it was reported in Egypt; on the other hand, the contribution of Egyptian researchers to identifying a solution using natural products is more notable than that of researchers in the UK. Tracing the prevalence of A. baumannii infections over the years showed that the infections are on the rise, especially in Egypt vs. the UK. Further concerns are linked to the spread of antibiotic resistance among the isolates collected from Egypt reaching very alarming levels. Studies conducted in the UK showed earlier inclusion of high-throughput technologies in the tracking and detection of A. baumannii and its resistance than those conducted in Egypt. Possible explanations for these variations are analyzed and discussed.
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Tobuse AJ, Ang CW, Yeong KY. Modern vaccine development via reverse vaccinology to combat antimicrobial resistance. Life Sci 2022; 302:120660. [PMID: 35642852 DOI: 10.1016/j.lfs.2022.120660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/02/2022] [Accepted: 05/19/2022] [Indexed: 10/18/2022]
Abstract
With the continuous evolution of bacteria, the global antimicrobial resistance health threat is causing millions of deaths yearly. While depending on antibiotics as a primary treatment has its merits, there are no effective alternatives thus far in the pharmaceutical market against some drug-resistant bacteria. In recent years, vaccinology has become a key topic in scientific research. Combining with the growth of technology, vaccine research is seeing a new light where the process is made faster and more efficient. Although less discussed, bacterial vaccine is a feasible strategy to combat antimicrobial resistance. Some vaccines have shown promising results with good efficacy against numerous multidrug-resistant strains of bacteria. In this review, we aim to discuss the findings from studies utilizing reverse vaccinology for vaccine development against some multidrug-resistant bacteria, as well as provide a summary of multi-year bacterial vaccine studies in clinical trials. The advantages of reverse vaccinology in the generation of new bacterial vaccines are also highlighted. Meanwhile, the limitations and future prospects of bacterial vaccine concludes this review.
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Affiliation(s)
- Asuka Joy Tobuse
- School of Science, Monash University Malaysia Campus, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor, Malaysia
| | - Chee Wei Ang
- School of Science, Monash University Malaysia Campus, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor, Malaysia
| | - Keng Yoon Yeong
- School of Science, Monash University Malaysia Campus, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor, Malaysia.
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