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Dilagui I, Loqman S, Lamrani Hanchi A, Soraa N. Antibiotic resistance patterns of carbapenemase-producing Enterobacterales in Mohammed VI University Hospital of Marrakech, Morocco. Infect Dis Now 2022; 52:334-340. [PMID: 35700962 DOI: 10.1016/j.idnow.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/16/2022] [Accepted: 06/07/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The emergence and spread of Carbapenem-Resistant Enterobacterales (CRE) has become a growing concern for health services, internationally, nationally, and regionally. In Morocco, the situation is more worrisome as studies on CRE are scarce and/or scattered and/or outdated. As a result, we carried out the present study to determine and update CRE prevalence at Mohammed VI University Hospital of Marrakech, Morocco. PATIENTS AND METHODS A cross-sectional prospective study was carried out from March 2018 to March 2020 on 41161 clinical specimens of 23,469 patients suspected of bacterial infections. Enterobacterales strains were isolated following standard bacteriological procedures. Bacterial strains were identified using BD-Phoenix and MALDI-TOF-MS. Antibiotic susceptibility was determined for 14 antibiotics. Carbapenemase production and phenotypic detection were characterized using modified carbapenem inactivation phenotypic and immunochromatographic methods. RESULTS All in all, 484 Enterobaterales resistant to at least one carbapenem were recovered. The majority was isolated from the neonatal unit (14%), followed by the urology-nephrology (11%), and plastic surgery departments (10%). K. pneumoniae (n=232) was the most isolated, followed by E. cloacae (n=148), E. coli (n=56), and S. marcescens (n=17). Antibiotic susceptibility profile showed high rates of resistance to ciprofloxacin (75.21%), gentamicin (84.50%), and cotrimoxazole (88.42%). Out of 484 CRE positive cultures, 388 (80.16%) were Carbapenemase-positive. Out of the latter, 170 were metallo-beta-lactamase producers (NDM), 162 OXA-48-like, and 56 both. CONCLUSION These findings emphasize the urgent need for control precautions and strict measures to contain and mitigate this issue.
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Affiliation(s)
- I Dilagui
- Laboratoire de Lutte Contre les Maladies Infectieuses, Faculté de Médecine et de Pharmacie de Marrakech, Université Cadi Ayyad, Marrakech, Morocco; Laboratoire de Microbiologie-Virologie, Hôpital Ar-Razi, Centre Hospitalier Universitaire Mohammed VI, Avenue Ibn Sina Amerchich, BP 2360, Marrakech, Morocco
| | - S Loqman
- Laboratoire de Lutte Contre les Maladies Infectieuses, Faculté de Médecine et de Pharmacie de Marrakech, Université Cadi Ayyad, Marrakech, Morocco; Laboratoire de Microbiologie-Virologie, Hôpital Ar-Razi, Centre Hospitalier Universitaire Mohammed VI, Avenue Ibn Sina Amerchich, BP 2360, Marrakech, Morocco.
| | - A Lamrani Hanchi
- Laboratoire de Lutte Contre les Maladies Infectieuses, Faculté de Médecine et de Pharmacie de Marrakech, Université Cadi Ayyad, Marrakech, Morocco; Laboratoire de Microbiologie-Virologie, Hôpital Ar-Razi, Centre Hospitalier Universitaire Mohammed VI, Avenue Ibn Sina Amerchich, BP 2360, Marrakech, Morocco
| | - N Soraa
- Laboratoire de Lutte Contre les Maladies Infectieuses, Faculté de Médecine et de Pharmacie de Marrakech, Université Cadi Ayyad, Marrakech, Morocco; Laboratoire de Microbiologie-Virologie, Hôpital Ar-Razi, Centre Hospitalier Universitaire Mohammed VI, Avenue Ibn Sina Amerchich, BP 2360, Marrakech, Morocco
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Yue K, Xu C, Wang Z, Liu W, Liu C, Xu X, Xing Y, Chen S, Li X, Wan S. 1,2-Isoselenazol-3(2H)-one derivatives as NDM-1 inhibitors displaying synergistic antimicrobial effects with meropenem on NDM-1 producing clinical isolates. Bioorg Chem 2022; 129:106153. [DOI: 10.1016/j.bioorg.2022.106153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/16/2022] [Accepted: 09/12/2022] [Indexed: 11/30/2022]
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Dehghan Manshadi M, Setoodeh P, Zare H. Rapid-SL identifies synthetic lethal sets with an arbitrary cardinality. Sci Rep 2022; 12:14022. [PMID: 35982201 PMCID: PMC9388495 DOI: 10.1038/s41598-022-18177-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 08/05/2022] [Indexed: 11/09/2022] Open
Abstract
The multidrug resistance of numerous pathogenic microorganisms is a serious challenge that raises global healthcare concerns. Multi-target medications and combinatorial therapeutics are much more effective than single-target drugs due to their synergistic impact on the systematic activities of microorganisms. Designing efficient combinatorial therapeutics can benefit from identification of synthetic lethals (SLs). An SL is a set of non-essential targets (i.e., reactions or genes) that prevent the proliferation of a microorganism when they are "knocked out" simultaneously. To facilitate the identification of SLs, we introduce Rapid-SL, a new multimodal implementation of the Fast-SL method, using the depth-first search algorithm. The advantages of Rapid-SL over Fast-SL include: (a) the enumeration of all SLs that have an arbitrary cardinality, (b) a shorter runtime due to search space reduction, (c) embarrassingly parallel computations, and (d) the targeted identification of SLs. Targeted identification is important because the enumeration of higher order SLs demands the examination of too many reaction sets. Accordingly, we present specific applications of Rapid-SL for the efficient targeted identification of SLs. In particular, we found up to 67% of all quadruple SLs by investigating about 1% of the search space. Furthermore, 307 sextuples, 476 septuples, and over 9000 octuples are found for Escherichia coli genome-scale model, iAF1260.
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Affiliation(s)
- Mehdi Dehghan Manshadi
- Department of Chemical Engineering, School of Chemical, Petroleum and Gas Engineering, Shiraz University, Shiraz, Iran
| | - Payam Setoodeh
- Department of Chemical Engineering, School of Chemical, Petroleum and Gas Engineering, Shiraz University, Shiraz, Iran.
| | - Habil Zare
- Glenn Biggs Institute for Alzheimer's & Neurodegenerative Diseases, 7400 Merton Minter, San Antonio, TX, 78229, USA. .,Department of Cell Systems and Anatomy, University of Texas Health Science Center, San Antonio, San Antonio, TX, USA.
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Altayb HN, Elbadawi HS, Alzahrani FA, Baothman O, Kazmi I, Nadeem MS, Hosawi S, Chaieb K. Co-Occurrence of β-Lactam and Aminoglycoside Resistance Determinants among Clinical and Environmental Isolates of Klebsiella pneumoniae and Escherichia coli: A Genomic Approach. Pharmaceuticals (Basel) 2022; 15:1011. [PMID: 36015159 PMCID: PMC9416466 DOI: 10.3390/ph15081011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 12/04/2022] Open
Abstract
The presence of antimicrobial-resistance genes (ARGs) in mobile genetic elements (MGEs) facilitates the rapid development and dissemination of multidrug-resistant bacteria, which represents a serious problem for human health. This is a One Health study which aims to investigate the co-occurrence of antimicrobial resistance determinants among clinical and environmental isolates of K. pneumoniae and E. coli. Various bioinformatics tools were used to elucidate the bacterial strains' ID, resistome, virulome, MGEs, and phylogeny for 42 isolates obtained from hospitalized patients (n = 20) and environmental sites (including fresh vegetables, fruits, and drinking water) (n = 22). The multilocus sequence typing (MLST) showed that K. pneumoniae belonged to ten sequence types (STs) while the E. coli belonged to seventeen STs. Multidrug-resistant isolates harbored β-lactam, aminoglycoside resistance determinants, and MGE were detected circulating in the environment (drinking water, fresh vegetables, and fruits) and in patients hospitalized with postoperative infections, neonatal sepsis, and urinary tract infection. Four K. pneumoniae environmental isolates (7E, 16EE, 1KE, and 19KE) were multidrug-resistant and were positive for different beta-lactam and aminoglycoside resistance determinants. blaCTX-M-15 in brackets of ISEc 9 and Tn 3 transposases was detected in isolates circulating in the pediatrics unit of Soba hospital and the environment. This study documented the presence of bacterial isolates harboring a similar pattern of antimicrobial resistance determinants circulating in hospitals and environments. A rapid response is needed from stakeholders to initiate a program for infection prevention and control measures to detect such clones disseminated in the communities and hospitals.
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Affiliation(s)
- Hisham N. Altayb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Centre for Artificial Intelligence in Precision Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hana S. Elbadawi
- Microbiology and Parasitology Department, Soba University Hospital, University of Khartoum, Khartoum 11115, Sudan
| | - Faisal A. Alzahrani
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Embryonic Stem Cells Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Othman Baothman
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Salman Hosawi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Kamel Chaieb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environmental and Products, Faculty of Pharmacy, University of Monastir, Monastir 5000, Tunisia
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Prevalence and Antimicrobial Resistance of Bloodstream Infections Caused by ESKAPEEc Pathogens: A Five-year Analysis. Jundishapur J Microbiol 2022. [DOI: 10.5812/jjm-122990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Antimicrobial resistance in ESKAPEEc (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter species, and Escherichia coli) pathogens causing bloodstream infections (BSIs) is a growing threat to clinicians and public health. Objectives: Our purpose was to determine the prevalence and susceptibility of ESKAPEEcs causing BSI over five years (2016 to 2020) at a large tertiary hospital in Istanbul, Turkey. Methods: Of 2591 unique isolates obtained from blood culture specimens, 1.281 (49.4%) were positive for ESKAPEEc pathogens. The ESKAPEEc rates increased from 2016 to 2019 and decreased during the COVID-19 pandemic. Results: The most common pathogen was K. pneumoniae (34.3%). Carbapenem resistant (CR) K. pneumoniae was 61.8% and A. baumannii was 90.4%. The percentages of methicillin-resistant S. aureus (MRSA) and vancomycin-resistant E. faecium (VRE) were 38.6% and 29.4%, respectively. Conclusions: Our findings showed a high incidence of ESKAPEEc and AMR in BSIs. Antibiotic policies and restrictions in health care settings and the community will play an essential role in the solution in the future.
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106
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Antibacterial and Antibiofilm Potency of Menadione Against Multidrug-Resistant S. aureus. Curr Microbiol 2022; 79:282. [PMID: 35934752 DOI: 10.1007/s00284-022-02975-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/11/2022] [Indexed: 11/03/2022]
Abstract
Menadione is an analogue of 1,4-naphthoquinone (1,4-NQ) that possesses enormous pharmaceutical potential. The minimum inhibitory concentration (MIC) of menadione was determined against eighteen pathogens of the ESKAPE category, including thirteen multidrug-resistant (MDR) and five standard strains. From a total of eighteen pathogens, five strains of S. aureus (four: MDR and one: Standard strain) were considered further for detailed studies. This study included the determination of minimum bactericidal concentration (MBC), time-kill assay, scanning electron microscopic technique (SEM), and detection of reactive oxygen species (ROS). Additionally, the effect of menadione on biofilms of three strains of S. aureus was performed through crystal violet assay, SEM, and confocal laser scanning microscopy (CLSM). Menadione exerted substantial antibacterial activity against S. aureus (S8, S9, NCIM 5021) at a lower MIC (64 µg/mL). Whereas, the MIC of 256 µg/mL was displayed against J2 and J4 (MDR and biofilm-forming strains). The time-killing effect of menadione against S. aureus strains was observed after 9 h at MBCs of 64 µg/mL (NCIM 5021), 128 µg/mL (S8, S9), and 512 µg/mL (J2, J4). Enhanced levels of ROS in all five S. aureus were observed in presence of menadione (MICs and MBCs). The relation of enhanced ROS due to menadione activity invigorated us to explore its effect on S. aureus biofilms. We report menadione-mediated inhibition (> 90%) of biofilm formation (at respective MICs) and effect on preformed biofilms (> 85%) at 1024 µg/mL. Menadione possessing antibacterial and antibiofilm potentials are imperative in the era of multidrug resistance developed by bacterial pathogens.
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107
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Pusparajah P, Letchumanan V, Goh BH, McGaw LJ. Editorial: Novel Approaches to the Treatment of Multidrug-Resistant Bacteria. Front Pharmacol 2022; 13:972935. [PMID: 35991895 PMCID: PMC9382351 DOI: 10.3389/fphar.2022.972935] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 06/24/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Priyia Pusparajah
- Medical Health and Translational Research Group (MHTR), Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
- *Correspondence: Priyia Pusparajah,
| | - Vengadesh Letchumanan
- Novel Bacteria and Drug Discovery Research Group (NBDD), Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Subang Jaya, Malaysia
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Lyndy Joy McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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108
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Kulkarni AV, Premkumar M, Arab JP, Kumar K, Sharma M, Reddy ND, Padaki NR, Reddy RK. Early Diagnosis and Prevention of Infections in Cirrhosis. Semin Liver Dis 2022; 42:293-312. [PMID: 35672014 DOI: 10.1055/a-1869-7607] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Strategies to prevent infection and improve outcomes in patients with cirrhosis. HAV, hepatitis A virus; HBV, hepatitis B virus; COVID-19, novel coronavirus disease 2019; NSBB, nonselective β-blocker; PPI, proton pump inhibitors.Cirrhosis is a risk factor for infections. Majority of hospital admissions in patients with cirrhosis are due to infections. Sepsis is an immunological response to an infectious process that leads to end-organ dysfunction and death. Preventing infections may avoid the downstream complications, and early diagnosis of infections may improve the outcomes. In this review, we discuss the pathogenesis, diagnosis, and biomarkers of infection; the incremental preventive strategies for infections and sepsi; and the consequent organ failures in cirrhosis. Strategies for primary prevention include reducing gut translocation by selective intestinal decontamination, avoiding unnecessary proton pump inhibitors' use, appropriate use of β-blockers, and vaccinations for viral diseases including novel coronavirus disease 2019. Secondary prevention includes early diagnosis and a timely and judicious use of antibiotics to prevent organ dysfunction. Organ failure support constitutes tertiary intervention in cirrhosis. In conclusion, infections in cirrhosis are potentially preventable with appropriate care strategies to then enable improved outcomes.
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Affiliation(s)
- Anand V Kulkarni
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Madhumita Premkumar
- Department of Hepatology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Juan P Arab
- Departamento de Gastroenterologia, Escuela de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Karan Kumar
- Department of Hepatology, Mahatma Gandhi Medical College and Hospital, Jaipur, Rajasthan, India
| | - Mithun Sharma
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Nageshwar D Reddy
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Nagaraja R Padaki
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Rajender K Reddy
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania
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Chemical Composition, Antioxidant, Antibacterial, and Antibiofilm Activities of Backhousia citriodora Essential Oil. Molecules 2022; 27:molecules27154895. [PMID: 35956846 PMCID: PMC9370046 DOI: 10.3390/molecules27154895] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
The essential oil of Backhousia citriodora, commonly known as lemon myrtle oil, possesses various beneficial properties due to its richness in bioactive compounds. This study aimed to characterize the chemical profile of the essential oil isolated from leaves of Backhousia citriodora (BCEO) and its biological properties, including antioxidant, antibacterial, and antibiofilm activities. Using gas chromatography–mass spectrometry, 21 compounds were identified in BCEO, representing 98.50% of the total oil content. The isomers of citral, geranial (52.13%), and neral (37.65%) were detected as the main constituents. The evaluation of DPPH radical scavenging activity and ferric reducing antioxidant power showed that BCEO exhibited strong antioxidant activity at IC50 of 42.57 μg/mL and EC50 of 20.03 μg/mL, respectively. The antibacterial activity results showed that BCEO exhibited stronger antibacterial activity against Gram-positive bacteria (Staphylococcus aureus and Staphylococcus epidermidis) than against Gram-negative bacteria (Escherichia coli and Klebsiella pneumoniae). For the agar disk diffusion method, S. epidermidis was the most sensitive to BCEO with an inhibition zone diameter of 50.17 mm, followed by S. aureus (31.13 mm), E. coli (20.33 mm), and K. pneumoniae (12.67 mm). The results from the microdilution method showed that BCEO exhibited the highest activity against S. epidermidis and S. aureus, with the minimal inhibitory concentration (MIC) value of 6.25 μL/mL. BCEO acts as a potent antibiofilm agent with dual actions, inhibiting (85.10% to 96.44%) and eradicating (70.92% to 90.73%) of the biofilms formed by the four tested bacteria strains, compared with streptomycin (biofilm inhibition, 67.65% to 94.29% and biofilm eradication, 49.97% to 89.73%). This study highlights that BCEO can potentially be a natural antioxidant agent, antibacterial agent, and antibiofilm agent that could be applied in the pharmaceutical and food industries. To the best of the authors’ knowledge, this is the first report, on the antibiofilm activity of BCEO against four common nosocomial pathogens.
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Rattanachak N, Weawsiangsang S, Jongjitvimol T, Baldock RA, Jongjitwimol J. Hydroquinine Possesses Antibacterial Activity, and at Half the MIC, Induces the Overexpression of RND-Type Efflux Pumps Using Multiplex Digital PCR in Pseudomonas aeruginosa. Trop Med Infect Dis 2022; 7:tropicalmed7080156. [PMID: 36006248 PMCID: PMC9414946 DOI: 10.3390/tropicalmed7080156] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 11/16/2022] Open
Abstract
Hydroquinine is an organic compound that is closely related to quinine-derivative drugs and contains anti-malarial and anti-arrhythmia activities. It has been also found in abundance in some natural extracts that possess antibacterial properties. However, there is little evidence demonstrating the antibacterial effect of hydroquinine. Therefore, we aimed to investigate the antibacterial properties of hydroquinine using broth microdilution methods. In addition, we evaluated the transcriptional responses of P. aeruginosa to hydroquinine-induced stress using RNA sequencing with transcriptomic analysis and validated the results using PCR-based methods. The MIC and MBC values of hydroquinine against all eight bacterial strains investigated ranged from 650 to 2500 and from 1250 to 5000 µg/mL, respectively. Transcriptomic analysis demonstrated that RND efflux pump transcripts were overexpressed (4.90−9.47 Log2 fold change). Using mRT-dPCR and RT-qPCR, we identified that mRNA levels of mexD and mexY genes were overexpressed in response to just half the MIC of hydroquinine in P. aeruginosa. In conclusion, we uncover the antimicrobial potential of hydroquinine as well as identify changes in gene expression that may contribute to bacterial resistance. Further work will be required to explore the efficacy and potential use of hydroquinine in the clinic.
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Affiliation(s)
- Nontaporn Rattanachak
- Biomedical Sciences Program, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand; (N.R.); (S.W.)
| | - Sattaporn Weawsiangsang
- Biomedical Sciences Program, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand; (N.R.); (S.W.)
| | - Touchkanin Jongjitvimol
- Biology Program, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok 65000, Thailand;
| | - Robert A Baldock
- School of Pharmacy and Biomedical Sciences, Faculty of Science and Health, University of Portsmouth, Portsmouth PO1 2DT, UK;
| | - Jirapas Jongjitwimol
- Biomedical Sciences Program, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand; (N.R.); (S.W.)
- Department of Medical Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand
- Centre of Excellence in Biomaterials, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
- Correspondence:
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Bouaouina S, Aouf A, Touati A, Ali H, Elkhadragy M, Yehia H, Farouk A. Effect of Nanoencapsulation on the Antimicrobial and Antibiofilm Activities of Algerian Origanum glandulosum Desf. against Multidrug-Resistant Clinical Isolates. NANOMATERIALS 2022; 12:nano12152630. [PMID: 35957062 PMCID: PMC9370196 DOI: 10.3390/nano12152630] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023]
Abstract
The emergence of multidrug-resistant (MDR) bacteria is a danger to public health and exposes patients to high risk, increasing morbidity and mortality worldwide. For this purpose, three months of evaluation of MDR’s prevalence and antimicrobial susceptibility patterns in the military regional university hospital of Constantine from different services and samples was carried out. Among a total of 196 isolates, 35.2% were MDR. The use of essential oils such as Origanum glandulosum Desf. as an alternative to antibiotics is attractive due to their rich content of bioactive compounds conferring many biological activities. Also, to overcome the drawbacks of using oils as the hydrophobicity and negative interaction with the environmental conditions, in addition to increasing their activity, encapsulation for the oil was performed using high-speed homogenization (HSH) into nanocapsules and high-pressure homogenization (HPH) into nanoemulsion. Nine volatile constituents were determined using gas chromatography-mass spectrometry analysis (GC-MS) in hydrodistilled oil with thymol, carvacrol, p-cymene, and γ-terpinene as dominants. A dramatic decrease in the major volatile components was observed due to the use of HSH and HPH but generated the same oil profile. The mean particle size of the nanoemulsion was 54.24 nm, while that of nanocapsules was 120.60 nm. The antibacterial activity of the oil and its nanoparticles was estimated on MDR isolates using the disk diffusion, aromatogram, and broth microdilution methods. Consistent with the differences in volatile constituents, the oil exhibited a higher antibacterial activity compared to its nanoforms with the diameters of the inhibition zone against E. coli (20 mm), S. aureus (35 mm), and A. baumannii (40 mm). Both formulations have shown relatively significant activity against the biofilm state at sub-inhibitory concentrations, where nanoemulsion was more potent than nanocapsules. The results obtained suggested that nanoformulations of essential oils are strongly recommended for therapeutic application as alternatives to antibiotics.
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Affiliation(s)
- Sarah Bouaouina
- Laboratory of Applied Microbiology, Faculty of Life Sciences and Nature, University of Ferhat Abbas, Setif 19000, Algeria; (S.B.); (A.A.)
| | - Abdelhakim Aouf
- Laboratory of Applied Microbiology, Faculty of Life Sciences and Nature, University of Ferhat Abbas, Setif 19000, Algeria; (S.B.); (A.A.)
| | - Abdelaziz Touati
- Laboratoire d’Ecologie Microbienne, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria;
| | - Hatem Ali
- Food Technology Department, National Research Center, Cairo 12622, Egypt;
| | - Manal Elkhadragy
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Hany Yehia
- Food Science and Nutrition Department, College of Food and Agriculture Science, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia;
- Food Science and Nutrition Department, Faculty of Home Economics, Helwan University, Helwan P.O. Box 11611, Egypt
| | - Amr Farouk
- Flavour and Aroma Chemistry Department, National Research Centre, Cairo 12622, Egypt
- Correspondence: ; Tel.: +20-1092327777
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Damas MSF, Ferreira RL, Campanini EB, Soares GG, Campos LC, Laprega PM, Soares da Costa A, Freire CCDM, Pitondo-Silva A, Cerdeira LT, da Cunha AF, Pranchevicius MCDS. Whole genome sequencing of the multidrug-resistant Chryseobacterium indologenes isolated from a patient in Brazil. Front Med (Lausanne) 2022; 9:931379. [PMID: 35966843 PMCID: PMC9366087 DOI: 10.3389/fmed.2022.931379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 06/30/2022] [Indexed: 12/03/2022] Open
Abstract
Chryseobacterium indologenes is a non-glucose-fermenting Gram-negative bacillus. This emerging multidrug resistant opportunistic nosocomial pathogen can cause severe infections in neonates and immunocompromised patients. This study aimed to present the first detailed draft genome sequence of a multidrug-resistant C. indologenes strain isolated from the cerebrospinal fluid of an infant hospitalized at the Neonatal Intensive Care Unit of Brazilian Tertiary Hospital. We first analyzed the susceptibility of C. indologenes strain to different antibiotics using the VITEK 2 system. The strain demonstrated an outstanding resistance to all the antibiotic classes tested, including β-lactams, aminoglycosides, glycylcycline, and polymyxin. Next, C. indologenes was whole-genome-sequenced, annotated using Prokka and Rapid Annotation using Subsystems Technology (RAST), and screened for orthologous groups (EggNOG), gene ontology (GO), resistance genes, virulence genes, and mobile genetic elements using different software tools. The draft genome contained one circular chromosome of 4,836,765 bp with 37.32% GC content. The genomic features of the chromosome present numerous genes related to cellular processes that are essential to bacteria. The MDR C. indologenes revealed the presence of genes that corresponded to the resistance phenotypes, including genes to β-lactamases (blaIND–13, blaCIA–3, blaTEM–116, blaOXA–209, blaVEB–15), quinolone (mcbG), tigecycline (tet(X6)), and genes encoding efflux pumps which confer resistance to aminoglycosides (RanA/RanB), and colistin (HlyD/TolC). Amino acid substitutions related to quinolone resistance were observed in GyrA (S83Y) and GyrB (L425I and K473R). A mutation that may play a role in the development of colistin resistance was detected in lpxA (G68D). Chryseobacterium indologenes isolate harbored 19 virulence factors, most of which were involved in infection pathways. We identified 13 Genomic Islands (GIs) and some elements associated with one integrative and conjugative element (ICEs). Other elements linked to mobile genetic elements (MGEs), such as insertion sequence (ISEIsp1), transposon (Tn5393), and integron (In31), were also present in the C. indologenes genome. Although plasmids were not detected, a ColRNAI replicon type and the most resistance genes detected in singletons were identified in unaligned scaffolds. We provided a wide range of information toward the understanding of the genomic diversity of C. indologenes, which can contribute to controlling the evolution and dissemination of this pathogen in healthcare settings.
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Affiliation(s)
| | - Roumayne Lopes Ferreira
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Emeline Boni Campanini
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | | | | | - Pedro Mendes Laprega
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Andrea Soares da Costa
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | | | - André Pitondo-Silva
- Programa de Pós-graduação em Odontologia e Tecnologia Ambiental, Universidade de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | | | | | - Maria-Cristina da Silva Pranchevicius
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
- Centro de Ciências Biológicas e da Saúde, Biodiversidade Tropical - BIOTROP, Universidade Federal de São Carlos, São Carlos, Brazil
- *Correspondence: Maria-Cristina da Silva Pranchevicius,
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Das S, Vishakha K, Banerjee S, Nag D, Ganguli A. Tetracycline-loaded magnesium oxide nanoparticles with a potential bactericidal action against multidrug-resistant bacteria: In vitro and in vivo evidence. Colloids Surf B Biointerfaces 2022; 217:112688. [PMID: 35841801 DOI: 10.1016/j.colsurfb.2022.112688] [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: 09/08/2021] [Revised: 06/08/2022] [Accepted: 07/02/2022] [Indexed: 10/17/2022]
Abstract
Worldwide, the emergence of diarrhoea-causing multi-drug resistant (MDR) bacteria has become a crucial problem in everyday life. Tetracycline (TC) is a bacteriostatic agent that has a wide spectrum of antibacterial activity. One potential strategy to enhance the penetration and antibacterial activity of antibiotics is the use of nanotechnology. In this context, this study dealt with the synthesis of TC loading in biocompatible magnesium oxide nanoparticles (MgONPs), its characterization, and the potency of killing against diarrhoea-causing MDR bacteria E. coli and S. flexneri. TC loaded- MgONPs (MgONPs-TC) were characterized by DLS, SEM-EDS, UV-vis spectroscopy, and FTIR techniques with adequate physical properties. Antibacterial and antibiofilm studies indicate that this nanoparticle successfully eradicated both planktonic and sessile forms of those bacteria. It also significantly reduced the production of bacterial EPS, different levels of antioxidant enzymes, and induced reactive oxygen species (ROS) in the bacterial cell as a mode of antibacterial action. In particular, MgONPs-TC were efficient in reducing the colonization of MDR E. coli and S. flexneri in the C. elegans model. Therefore, all these data suggest that MgONPs-TC are a highly promising approach to combating diseases associated with diarrhoea-causing MDR bacteria in the medical field with limited health care budgets.
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Affiliation(s)
- Shatabdi Das
- Department of Microbiology, Techno India University, EM-4 Sector-V, Salt Lake City, Kolkata, West Bengal 700091, India
| | - Kumari Vishakha
- Department of Microbiology, Techno India University, EM-4 Sector-V, Salt Lake City, Kolkata, West Bengal 700091, India
| | - Satarupa Banerjee
- Department of Microbiology, Techno India University, EM-4 Sector-V, Salt Lake City, Kolkata, West Bengal 700091, India
| | - Debasish Nag
- Department of Biotechnology, University of Calcutta, West Bengal, India
| | - Arnab Ganguli
- Department of Microbiology, Techno India University, EM-4 Sector-V, Salt Lake City, Kolkata, West Bengal 700091, India.
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114
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Travi BL. Current status of antihistamine drugs repurposing for infectious diseases. MEDICINE IN DRUG DISCOVERY 2022. [DOI: 10.1016/j.medidd.2022.100140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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115
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Wang J, Hu H, Du H, Luo M, Cao Y, Xu J, Chen T, Guo Y, Li Q, Chen W, Zhang Y, Han J, Wan H. Clinical Efficacy Protocol of Yinhuapinggan Granules: A Randomized, Double-Blind, Parallel, and Controlled Clinical Trial Program for the Intervention of Community-Acquired Drug-Resistant Bacterial Pneumonia as a Complementary Therapy. Front Pharmacol 2022; 13:852604. [PMID: 35847015 PMCID: PMC9279864 DOI: 10.3389/fphar.2022.852604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/08/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Community-acquired bacterial pneumonia (CABP) is an important health care concern in the worldwide, and is associated with significant morbidity, mortality, and health care expenditure. Streptococcus pneumoniae is the most frequent causative pathogen of CABP. Common treatment for hospitalized patients with CABP is empiric antibiotic therapy using β-lactams in combination with macrolides, respiratory fluoroquinolones, or tetracyclines. However, overuse of antibiotics has led to an increased incidence of drug-resistant S. pneumoniae, exacerbating the development of community-acquired drug-resistant bacterial pneumonia (CDBP) and providing a challenge for physicians to choose empirical antimicrobial therapy. Methods: Traditional Chinese medicine (TCM) is widely used as a complementary treatment for CDBP. Yinhuapinggan granules (YHPG) is widely used in the adjuvant treatment of CDBP. Experimental studies and small sample clinical trials have shown that YHPG can effectively reduce the symptoms of CDBP. However, there is a lack of high-quality clinical evidence for the role of YHPG as a complementary drug in the treatment of CDBP. Here, we designed a randomized, double-blind, placebo-controlled clinical trial to explore the efficacy and safety of YHPG. A total of 240 participants will be randomly assigned to the YHPG or placebo group in a 1:1 ratio. YHPG and placebo will be added to standard treatment for 10 days, followed by 56 days of follow-up. The primary outcome is the cure rate of pneumonia, and the secondary outcomes includes conversion rate of severe pneumonia, lower respiratory tract bacterial clearance, lactic acid (LC) clearance rate, temperature, C-reactive protein (CRP), criticality score (SMART-COP score), acute physiological and chronic health assessment system (APACHEII score) and clinical endpoint events. Adverse events will be monitored throughout the trial. Data will be analyzed according to a pre-defined statistical analysis plan. This research will disclose the efficacy of YHPG in acquired drug-resistant pneumonia. Clinical Trial Registration: https://clinicaltrials.gov, identifier ChiCTR2100047501.
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Affiliation(s)
- Jiaoli Wang
- Zhejiang Chinese Medical University, Hangzhou, China
- Department of Respiratory Medicine, Hangzhou First People’s Hospital, Hangzhou, China
| | - Haoran Hu
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Haixia Du
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Man Luo
- Department of Respiratory Medicine, Hangzhou First People’s Hospital, Hangzhou, China
| | - Yilan Cao
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jiaping Xu
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Tianhang Chen
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yilei Guo
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qixiang Li
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Wen Chen
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yifei Zhang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Jin Han
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Haitong Wan
- Zhejiang Chinese Medical University, Hangzhou, China
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
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Li X, Xie L, Huang H, Li Z, Li G, Liu P, Xiao D, Zhang X, Xiong W, Zeng Z. Prevalence of Livestock-Associated MRSA ST398 in a Swine Slaughterhouse in Guangzhou, China. Front Microbiol 2022; 13:914764. [PMID: 35814703 PMCID: PMC9260045 DOI: 10.3389/fmicb.2022.914764] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/17/2022] [Indexed: 01/01/2023] Open
Abstract
Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) is an important zoonotic microorganism that is increasingly causing public health concern worldwide. The objective of this study was to determine the transmission and occurrence of MRSA in a slaughterhouse environment and evaluate its antimicrobial resistance and genetic characterization. In this study, we conducted a comprehensive epidemiological survey of S. aureus by spa typing and whole-genome sequencing (WGS) of samples obtained from the pork production chain, the environment, and community residents. To clarify the evolutionary relationships of MRSA sequence type (ST) 398 in this study and global isolates, 197 published whole-genome sequences data of MRSA ST398 strains were downloaded from the GenBank database and included in the phylogenetic analysis. A total of 585 porcine samples (snout and carcass swabs), 78 human nasal samples, and 136 environmental samples were collected. The MRSA isolates were detected at higher frequencies in samples from swine (15.0%) than carcasses (10.0%), slaughterhouse workers (8.0%), community residents (0%), and environment samples (5.9%). The spa typing results showed that t571 accounted for a higher proportion than other spa types. Closely related isolates from the samples of swine, slaughterhouse workers, carcasses, carrier vehicle, and surrounding fishpond water indicate that MRSA ST398 strains may spread among swine, humans, and the environment. MRSA ST398-t571 isolates were genetically different from global strains, except for two Korean isolates, which showed genetic closeness with it. In addition, a MRSA ST398 isolate recovered from an infected patient in Europe differed by only 31 SNPs from the airborne dust-associated strain isolated in this study, thereby suggesting potential transmission among different countries. Antimicrobial susceptibility testing results demonstrated that 99.0% (96/97) of MRSA and 95.1% (231/243) of methicillin-sensitive S. aureus (MSSA) showed multidrug-resistant (MDR) phenotypes. According to WGS analysis, the poxtA-carrying segment (IS431mec-optrA-IS1216-fexB-IS431mec) was reported in MRSA ST398 isolates for the first time. The coexistence of cfr and optrA in a plasmid was first detected in MRSA ST398. The potential transmission of MRSA among humans, animals, and the environment is a cause for concern. The emergence and transmission of LA-MRSA ST398 with high levels of resistance profiles highlight the urgent need for LA-MRSA surveillance.
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Affiliation(s)
- Xiaoshen Li
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Longfei Xie
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Honghao Huang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Zhi Li
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Guihua Li
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Peng Liu
- College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Danyu Xiao
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Xucai Zhang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Wenguang Xiong
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
- *Correspondence: Wenguang Xiong,
| | - Zhenling Zeng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
- Zhenling Zeng,
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117
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Di Lodovico S, Fasciana T, Di Giulio M, Cellini L, Giammanco A, Rossolini GM, Antonelli A. Spread of Multidrug-Resistant Microorganisms. Antibiotics (Basel) 2022; 11:antibiotics11070832. [PMID: 35884086 PMCID: PMC9311923 DOI: 10.3390/antibiotics11070832] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Silvia Di Lodovico
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy; (M.D.G.); (L.C.)
- Correspondence:
| | - Teresa Fasciana
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90133 Palermo, Italy; (T.F.); (A.G.)
| | - Mara Di Giulio
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy; (M.D.G.); (L.C.)
| | - Luigina Cellini
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy; (M.D.G.); (L.C.)
| | - Anna Giammanco
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90133 Palermo, Italy; (T.F.); (A.G.)
| | - Gian Maria Rossolini
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (G.M.R.); (A.A.)
- Clinical Microbiology and Virology Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Alberto Antonelli
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (G.M.R.); (A.A.)
- Clinical Microbiology and Virology Unit, Careggi University Hospital, 50134 Florence, Italy
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Muntean M, Muntean AA, Preda M, Manolescu L, Dragomirescu C, Popa MI, Popa G. Phenotypic and genotypic detection methods for antimicrobial resistance in ESKAPE pathogens (Review). Exp Ther Med 2022; 24:508. [PMID: 35837033 PMCID: PMC9257796 DOI: 10.3892/etm.2022.11435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/05/2021] [Indexed: 11/10/2022] Open
Abstract
Antimicrobial resistance (AMR) represents a growing public health problem worldwide. Infections with such bacteria lead to longer hospitalization times, higher healthcare costs and greater morbidity and mortality. Thus, there is a greater need for rapid detection methods in order to limit their spread. The ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Enterobacter spp.) are a series of epidemiologically-important microorganisms of great concern due to their high levels of resistance. This review aimed to update the background information on the ESKAPE pathogens as well as to provide a summary of the numerous phenotypic and molecular methods used to detect their AMR mechanisms. While they are usually linked to hospital acquired infections, AMR is also spreading in the veterinary and the environmental sectors. Yet, the epidemiological loop closes with patients which, when infected with such pathogens, often lack therapeutic options. Thus, it was aimed to give the article a One Health perspective.
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Affiliation(s)
- Mădălina Muntean
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Andrei-Alexandru Muntean
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Mădălina Preda
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Loredana Manolescu
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cerasella Dragomirescu
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Mircea-Ioan Popa
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Gabriela Popa
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
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119
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Khan F, Jeong GJ, Khan MSA, Tabassum N, Kim YM. Seaweed-Derived Phlorotannins: A Review of Multiple Biological Roles and Action Mechanisms. Mar Drugs 2022; 20:384. [PMID: 35736187 PMCID: PMC9227776 DOI: 10.3390/md20060384] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 12/31/2022] Open
Abstract
Phlorotannins are a group of phenolic secondary metabolites isolated from a variety of brown algal species belonging to the Fucaceae, Sargassaceae, and Alariaceae families. The isolation of phlorotannins from various algal species has received a lot of interest owing to the fact that they have a range of biological features and are very biocompatible in their applications. Phlorotannins have a wide range of therapeutic biological actions, including antimicrobial, antidiabetic, antioxidant, anticancer, anti-inflammatory, anti-adipogenesis, and numerous other biomedical applications. The current review has extensively addressed the application of phlorotannins, which have been extensively investigated for the above-mentioned biological action and the underlying mechanism of action. Furthermore, the current review offers many ways to use phlorotannins to avoid certain downsides, such as low stability. This review article will assist the scientific community in investigating the greater biological significance of phlorotannins and developing innovative techniques for treating both infectious and non-infectious diseases in humans.
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Affiliation(s)
- Fazlurrahman Khan
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Korea
| | - Geum-Jae Jeong
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Korea;
| | - Mohd Sajjad Ahmad Khan
- Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia;
| | - Nazia Tabassum
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea;
| | - Young-Mog Kim
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Korea
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Korea;
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120
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An Overview of Healthcare Associated Infections and Their Detection Methods Caused by Pathogen Bacteria in Romania and Europe. J Clin Med 2022; 11:jcm11113204. [PMID: 35683591 PMCID: PMC9181229 DOI: 10.3390/jcm11113204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/25/2022] [Accepted: 06/01/2022] [Indexed: 11/16/2022] Open
Abstract
Healthcare-associated infections can occur in different care units and can affect both patients and healthcare professionals. Bacteria represent the most common cause of nosocomial infections and, due to the excessive and irrational use of antibiotics, resistant organisms have appeared. The most important healthcare-associated infections are central line-associated bloodstream infections, catheter-associated urinary tract infections, surgical site, soft tissue infections, ventilator-associated pneumonia, hospital acquired pneumonia, and Clostridioides difficile colitis. In Europe, some hospitalized patients develop nosocomial infections that lead to increased costs and prolonged hospitalizations. Healthcare-associated infection prevalence in developed countries is lower than in low-income and middle-income countries such as Romania, an Eastern European country, where several factors contribute to the occurrence of many nosocomial infections, but official data show a low reporting rate. For the rapid identification of bacteria that can cause these infections, fast, sensitive, and specific methods are needed, and they should be cost-effective. Therefore, this review focuses on the current situation regarding healthcare-associated infections in Europe and Romania, with discussions regarding the causes and possible solutions. As a possible weapon in the fight against the healthcare-associated infections, the diagnosis methods and tests used to determine the bacteria involved in healthcare-associated infections are evaluated.
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121
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Occurrence and Antibiotic Resistance Profiles of Methicillin-Resistant Staphylococcus Aureus (Mrsa) in Layer Chickens in Kebbi, Nigeria. FOLIA VETERINARIA 2022. [DOI: 10.2478/fv-2022-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Antimicrobial resistance (AMR) is a global health threat, and antimicrobial use in animal production for growth enhancement or prophylaxis contributes to the development of AMR. A cross-sectional study was conducted to investigate the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in poultry and farm attendants in Kebbi, North-Western Nigeria. A total of 207 cloacal and nasal swabs were randomly collected from four farms comprising 50 samples from each poultry farm and only 7 samples from farm attendants. The samples were analysed using routine bacteriological culture and identification techniques. Presumptive MRSA isolates were confirmed by PCR assay and AMR profiles of the isolates were evaluated using the Kirby-Bauer disk diffusion method. Of the 207 samples examined, 37.5 % (75/200) of layer birds tested positive for MRSA and 71.4 % (5/7) of farm attendants were MRSA positive. All the isolates were susceptible to vancomycin, with an AMR index ˃ 0.3. The findings of this study indicated colonization of layer chickens and humans by multidrug resistant MRSA, thus highlighting the potential role of poultry sources of transmission of multidrug-resistant MRSA strains to humans and vice versa.
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122
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Singh V, Kaur R, Devashree Y, Kaur D, Gupta S. In vitro Antimicrobial Activity of Cucumis L. and Momordica L. against Human Pathogens. DOKLADY BIOLOGICAL SCIENCES : PROCEEDINGS OF THE ACADEMY OF SCIENCES OF THE USSR, BIOLOGICAL SCIENCES SECTIONS 2022; 504:85-93. [PMID: 35821301 DOI: 10.1134/s0012496622030048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 06/15/2023]
Abstract
Plants are the rich source of compounds having antimicrobial properties against human pathogens. The present study has been carried out to evaluate the antimicrobial potential of Cucumis melo var. agrestis (morphotype I), Cucumis melo var. agrestis (morphotype II), Cucumis melo var. momordica L., Cucumis melo L., Momordica balsamina L., Momordica charantia L., Momordica dioica L. against Staphylococcus aureus, Pseudomonas flourescens, Bacillus coagulans, and Klebsiella pneumoniae. Crude extract of Cucumis L. and Momordica L. species were prepared with methanol, acetone and water for the determination of antimicrobial properties. Maximum yield was reported in methanol extract while minimum in acetone for all plant species. The maximum zone of inhibition of about 32.3 ± 0.57 mm was found against Staphylococcus aureus in Cucumis melo L., 21.3 ± 0.57 mm for Pseudomonas flourescens in Cucumis melo var. agrestis (morphotype II), 17 ± 0 mm for Klebsiella pneumoniae in Momordica balsamina L., and 23.3 ± 0.57 mm for Bacillus coagulans in Cucumis melo var. agrestis (morphotype II) extracts, respectively. The most active antimicrobial plants species were reported to be Cucumis melo var. agrestis (morphotype I), Cucumis melo L. and Momordica charantia L. having antimicrobial activities against all tested microorganisms.
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Affiliation(s)
- Vijay Singh
- Department of Botany, Mata Gujri College, Fatehgarh Sahib, Punjab, India
| | - Rupinderpal Kaur
- Department of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Yumnam Devashree
- Department of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Damanjeet Kaur
- Department of Microbiology, Mata Gujri College, Fatehgarh Sahib, Punjab, India
- Department of Biotechnology, Punjabi University, Patiala, Punjab, India
| | - Saurabh Gupta
- Department of Microbiology, Mata Gujri College, Fatehgarh Sahib, Punjab, India.
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Pandit G, Sarkar T, S. R. V, Debnath S, Satpati P, Chatterjee S. Delineating the Mechanism of Action of a Protease Resistant and Salt Tolerant Synthetic Antimicrobial Peptide against Pseudomonas aeruginosa. ACS OMEGA 2022; 7:15951-15968. [PMID: 35571791 PMCID: PMC9097201 DOI: 10.1021/acsomega.2c01089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/08/2022] [Indexed: 06/15/2023]
Abstract
Rapidly growing antimicrobial resistance (AMR) against antibiotics has propelled the development of synthetic antimicrobial peptides (AMPs) as potential antimicrobial agents. An antimicrobial peptide Nle-Dab-Trp-Nle-Dab-Dab-Nle-CONH2 (P36; Nle = norleucine, Dab = diaminobutyric acid, Trp = tryptophan) potent against Pseudomonas aeruginosa (P. aeruginosa) has been developed in the present study. Rational design strategy adopted in this study led to the improvisation of the therapeutic qualities such as activity, salt tolerance, cytotoxicity, and protease resistance of the template peptide P4, which was earlier reported from our group. P36 exhibited salt tolerant antimicrobial potency against P. aeruginosa, along with very low cytotoxicity against mammalian cell lines. P36 was found to be nonhemolytic and resistant toward protease degradation which qualified it as a potent antimicrobial agent. We have investigated the mechanism of action of this molecule in detail using several experimental techniques (spectroscopic, biophysical, and microscopic) and molecular dynamics simulations. P36 was a membrane active AMP with membrane destabilization and deformation abilities, leading to leakage of the intracellular materials and causing eventual cell death. The interaction between P36 and the microbial membrane/membrane mimics was primarily driven by electrostatics. P36 was unstructured in water and upon binding to the microbial membrane mimic SDS, suggesting no influence of secondary structure on its antimicrobial potency. Positive charge, optimum hydrophobic-hydrophilic balance, and chain length remained the most important concerns to be addressed while designing small cationic antimicrobial peptides.
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Affiliation(s)
- Gopal Pandit
- Department
of Chemistry, Indian Institute of Technology.
Guwahati (IITG), Guwahati, Assam 781039, India
| | - Tanumoy Sarkar
- Department
of Chemistry, Indian Institute of Technology.
Guwahati (IITG), Guwahati, Assam 781039, India
| | - Vignesh S. R.
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology. Guwahati (IITG), Guwahati, Assam 781039, India
| | - Swapna Debnath
- Department
of Chemistry, Indian Institute of Technology.
Guwahati (IITG), Guwahati, Assam 781039, India
| | - Priyadarshi Satpati
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology. Guwahati (IITG), Guwahati, Assam 781039, India
| | - Sunanda Chatterjee
- Department
of Chemistry, Indian Institute of Technology.
Guwahati (IITG), Guwahati, Assam 781039, India
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Quorum quenching action of marine red alga Halemenia durvillei on biofilm forming Gram negative bacterial isolates from contact lens. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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125
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Synthesis and Characterization of Piperine Amide analogues: Their In-silico and invitro analysis as Potential antibacterial agents. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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126
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Sundaresan AK, Vincent K, Mohan GBM, Ramakrishnan J. Association of Sequence types, Antimicrobial Resistance and Virulence Genes in Indian isolates of Klebsiella pneumoniae: A Comparative Genomics Study. J Glob Antimicrob Resist 2022; 30:431-441. [DOI: 10.1016/j.jgar.2022.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 10/18/2022] Open
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Pulakat L, Chen HH, Gavini MP, Ling LA, Tang Y, Mehm A, Martin GL, Beale CN, Mooney BP, Sun H. Transdermal Delivery of High Molecular Weight Antibiotics to Deep Tissue Infections via Droplette Micromist Technology Device (DMTD). Pharmaceutics 2022; 14:976. [PMID: 35631562 PMCID: PMC9146216 DOI: 10.3390/pharmaceutics14050976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 02/05/2023] Open
Abstract
Wound infection by multidrug-resistant (MDR) bacteria is a major disease burden. Systemic administration of broad-spectrum antibiotics colistin methanesulfonate (CMS) and vancomycin are the last lines of defense against deep wound infections by MDR bacteria. However, systemic administration of CMS and vancomycin are linked to life-threatening vital organ damage. Currently there are no effective topical application strategies to deliver these high molecular weight antibiotics across the stratum corneum. To overcome this difficulty, we tested if high molecular weight antibiotics delivered by Droplette micromist technology device (DMTD), a transdermal delivery device that generates a micromist capable of packaging large molecules, could attenuate deep skin tissue infections. Using green fluorescent protein-tagged E. coli and live tissue imaging, we show that (1) the extent of attenuation of deep-skin E. coli infection was similar when treated with topical DMTD- or systemic IP (intraperitoneal)-delivered CMS; (2) DMTD-delivered micromist did not spread the infection deeper; (3) topical DMTD delivery and IP delivery resulted in similar levels of vancomycin in the skin after a 2 h washout period; and (4) IP-delivered vancomycin was about 1000-fold higher in kidney and plasma than DMTD-delivered vancomycin indicating systemic toxicity. Thus, topical DMTD delivery of these antibiotics is a safe treatment for the difficult-to-treat deep skin tissue infections by MDR bacteria.
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Affiliation(s)
- Lakshmi Pulakat
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
- School of Medicine, Tufts University, Boston, MA 02111, USA;
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri, Columbia, MO 65211, USA
| | - Howard H. Chen
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
- School of Medicine, Tufts University, Boston, MA 02111, USA;
| | | | - Lauren A. Ling
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
- School of Medicine, Tufts University, Boston, MA 02111, USA;
| | - Yinian Tang
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
| | - Alexander Mehm
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
| | - Gregory L. Martin
- Tufts Medical Center, Molecular Cardiology Research Institute, Boston, MA 02111, USA; (H.H.C.); (L.A.L.); (Y.T.); (A.M.); (G.L.M.)
| | | | - Brian P. Mooney
- Charles W. Gehrke Proteomics Center, Division of Biochemistry, University of Missouri, Columbia, MO 65211, USA;
| | - Hongmin Sun
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri, Columbia, MO 65211, USA
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Shang Y, Guo J, Zhao Y, Chen J, Meng Q, Qu D, Zheng J, Yu Z, Wu Y, Deng Q. Clemastine Inhibits the Biofilm and Hemolytic of Staphylococcus aureus through the GdpP Protein. Microbiol Spectr 2022; 10:e0054121. [PMID: 35234502 PMCID: PMC8941875 DOI: 10.1128/spectrum.00541-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 12/16/2021] [Indexed: 11/28/2022] Open
Abstract
Staphylococcus aureus poses a significant threat to human health due to its virulence and multidrug resistance. In addition, recalcitrant biofilm formation of S. aureus often results in chronic infection and the treatment tolerance toward the traditional antibiotics. Thus, the development of novel antimicrobial agents capable to inhibit or eradicate S. aureus biofilm formation does matter. Here, we demonstrated that clemastine showed slight bacteriostatic activity and enhanced the antibacterial activity of oxacillin against S. aureus. Moreover, the dramatic inhibition of biofilm formation was found in clinical S. aureus strains by clemastine. Clemastine inhibited the release of eDNA during the biofilm formation and decreased the S. aureus hemolytic activity. Moreover, the S. aureus SA113 treated with clemastine displayed the decreased transcriptional level of the biofilm formation relevant genes (fnbB, icaA, and icaB), virulence genes (hlg, hld, lukde, lukpvl, beta-PSM, delta-PSM, and cap5A), and the regulatory genes agrA. The proteomics analysis of SA113 treated with clemastine demonstrated the significant changes in levels of biofilm-related proteins (stress response regulators ClpB and GroS, ATP-binding proteins, and urease metabolism), virulence-related proteins (SspA, superantigen, and VWbp), and methicillin resistance-related proteins (glutamine metabolism). The genetic mutations on gdpP (cyclic di-AMP phosphodiesterase) were found in the clemastine-induced tolerant derivative isolate by whole-genome sequencing. Furthermore, the interaction between clemastine and GdpP protein was demonstrated by the molecular docking, gdpP overexpression experiment, and thermal stability assay. Conclusively, clemastine might exert its inhibitory effects against the biofilm formation and hemolysis in S. aureus through targeting GdpP protein. IMPORTANCE The biofilm formation, which protects bacteria from stresses, including antibiotics and host immune responses, can be commonly found in clinical S. aureus isolates worldwide. Treatment failure of traditional antibiotics in biofilm-associated S. aureus infections remains a serious challenge. The novel anti-biofilm drug is urgently needed to address the looming crisis. In this study, clemastine, which is a histamine receptor H1 (HRH1) antagonist, was found to have a novel role of the significant inhibition against the biofilm formation and hemolytic activity of S. aureus and enhanced antibacterial activity against S. aureus when used in combination with oxacillin by targeting the GdpP protein. The discovery of this study identified novel use and mechanism of action of clemastine as a potential anti-biofilm drug for clinical application for S. aureus infectious.
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Affiliation(s)
- Yongpeng Shang
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Medicine, Shenzhen University, Shenzhen, China
| | - Jie Guo
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Yuxi Zhao
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Junwen Chen
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Qingyin Meng
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Di Qu
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Science and Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai, China
| | - Jinxin Zheng
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Zhijian Yu
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Yang Wu
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Science and Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai, China
| | - Qiwen Deng
- Department of Infectious Diseases and the Key Lab of Endogenous Infection, Shenzhen Nanshan People's Hospital, the 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Medicine, Shenzhen University, Shenzhen, China
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129
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Custer GF, Bresciani L, Dini-Andreote F. Ecological and Evolutionary Implications of Microbial Dispersal. Front Microbiol 2022; 13:855859. [PMID: 35464980 PMCID: PMC9019484 DOI: 10.3389/fmicb.2022.855859] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/14/2022] [Indexed: 12/04/2022] Open
Abstract
Dispersal is simply defined as the movement of species across space and time. Despite this terse definition, dispersal is an essential process with direct ecological and evolutionary implications that modulate community assembly and turnover. Seminal ecological studies have shown that environmental context (e.g., local edaphic properties, resident community), dispersal timing and frequency, and species traits, collectively account for patterns of species distribution resulting in either their persistence or unsuccessful establishment within local communities. Despite the key importance of this process, relatively little is known about how dispersal operates in microbiomes across divergent systems and community types. Here, we discuss parallels of macro- and micro-organismal ecology with a focus on idiosyncrasies that may lead to novel mechanisms by which dispersal affects the structure and function of microbiomes. Within the context of ecological implications, we revise the importance of short- and long-distance microbial dispersal through active and passive mechanisms, species traits, and community coalescence, and how these align with recent advances in metacommunity theory. Conversely, we enumerate how microbial dispersal can affect diversification rates of species by promoting gene influxes within local communities and/or shifting genes and allele frequencies via migration or de novo changes (e.g., horizontal gene transfer). Finally, we synthesize how observed microbial assemblages are the dynamic outcome of both successful and unsuccessful dispersal events of taxa and discuss these concepts in line with the literature, thus enabling a richer appreciation of this process in microbiome research.
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Affiliation(s)
- Gordon F Custer
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Luana Bresciani
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Francisco Dini-Andreote
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
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Soares de Moraes L, Gomes Magalhaes GL, Material Soncini JG, Pelisson M, Eches Perugini MR, Vespero EC. High mortality from carbapenem-resistant Klebsiella pneumoniae bloodstream infection. Microb Pathog 2022; 167:105519. [PMID: 35483557 DOI: 10.1016/j.micpath.2022.105519] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/18/2022]
Abstract
In this study, it was evaluated clinical data of 107 patients with bloodstream infection (BSI) by Klebsiella pneumoniae and performed phenotypic and molecular analyzes in 50.5% (54/107) of the samples, those that showed a resistance profile to carbapenemics. The blaKPC gene was present in 90.4% (49/54) of the samples, blaNDM gene in one sample and, in 7.4% (4/54) of the samples, no carbapenemase gene was found. In the similarity analysis, it was found 4 main clones and 11 samples were not genetically related. The median age of the patients was 58 (40-70) years old and 60.7% (65/107) were male. When comparing two groups of patients with BSI due to K. pneumoniae with and without resistance to carbapenems, the variables ICU permanence, renal failure (IR), previous use of antimicrobials, Charlson's comorbidity index (ICCi), some invasive procedures and death showed a statistically significant difference (p < 0.05). And when relating death as a dependent variable, IR, liver failure and patients with BSI XDR or PDR, were predictors of increased mortality. Our study showed a higher mortality rate in patients with BSI due to carbapenem-resistant pneumonia with additional resistance or not to polymyxins.
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Affiliation(s)
- Luana Soares de Moraes
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil
| | - Gerusa Luciana Gomes Magalhaes
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil
| | - João Gabriel Material Soncini
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil
| | - Marsileni Pelisson
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil
| | - Marcia Regina Eches Perugini
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil
| | - Eliana Carolina Vespero
- Clinical and Laboratory Microbiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Paraná, Brazil.
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131
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Adeyemi JO, Oriola AO, Onwudiwe DC, Oyedeji AO. Plant Extracts Mediated Metal-Based Nanoparticles: Synthesis and Biological Applications. Biomolecules 2022; 12:biom12050627. [PMID: 35625555 PMCID: PMC9138950 DOI: 10.3390/biom12050627] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 02/04/2023] Open
Abstract
The vastness of metal-based nanoparticles has continued to arouse much research interest, which has led to the extensive search and discovery of new materials with varying compositions, synthetic methods, and applications. Depending on applications, many synthetic methods have been used to prepare these materials, which have found applications in different areas, including biology. However, the prominent nature of the associated toxicity and environmental concerns involved in most of these conventional methods have limited their continuous usage due to the desire for more clean, reliable, eco-friendly, and biologically appropriate approaches. Plant-mediated synthetic approaches for metal nanoparticles have emerged to circumvent the often-associated disadvantages with the conventional synthetic routes, using bioresources that act as a scaffold by effectively reducing and stabilizing these materials, whilst making them biocompatible for biological cells. This capacity by plants to intrinsically utilize their organic processes to reorganize inorganic metal ions into nanoparticles has thus led to extensive studies into this area of biochemical synthesis and analysis. In this review, we examined the use of several plant extracts as a mediating agent for the synthesis of different metal-based nanoparticles (MNPs). Furthermore, the associated biological properties, which have been suggested to emanate from the influence of the diverse metabolites found in these plants, were also reviewed.
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Affiliation(s)
- Jerry O. Adeyemi
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Mthatha 5099, South Africa;
- Correspondence: (J.O.A.); (A.O.O.)
| | - Ayodeji O. Oriola
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Mthatha 5099, South Africa;
| | - Damian C. Onwudiwe
- Department of Chemistry, Faculty of Natural and Agricultural Science, North-West University, Private Bag X2046, Mmabatho 2735, South Africa;
- Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, Mafikeng Campus, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Adebola O. Oyedeji
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Mthatha 5099, South Africa;
- Correspondence: (J.O.A.); (A.O.O.)
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Salvia T, Dolma KG, Dhakal OP, Khandelwal B, Singh LS. Phenotypic Detection of ESBL, AmpC, MBL, and Their Co-occurrence among MDR Enterobacteriaceae Isolates in a Tertiary Care Hospital in Sikkim, India. J Lab Physicians 2022; 14:329-335. [PMID: 36119416 PMCID: PMC9473942 DOI: 10.1055/s-0042-1744239] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Abstract
Background Emergence of extended-spectrum beta-lactamases (ESBLs), AmpC β-lactamases, and metallo-β lactamases (MBL), and their co-existence among members of Enterobacteriaceae pose newer diagnostic and therapeutic challenges. The present study examines the ESBL, AmpC, and MBL production by various phenotypic methods and their co-occurrence among the multidrug-resistant (MDR) Enterobacteriaceae clinical isolates.
Materials and Methods Four hundred non-repetitive Enterobacteriaceae clinical isolates were collected from the Central Referral Hospital, Sikkim. The isolates were used for identification and their antibiotic susceptibility tests were performed according to the Clinical and Laboratory Standard Institute (CLSI) guidelines. ESBL was detected by double-disc synergy test (DDST) and phenotypic confirmatory disc-diffusion test (PCDDT), AmpC detection by AmpC E-test, and boronic acid disc diffusion (BD) test. MBL was detected using the imipenem–imipenem/EDTA disc and carba-NP tests.
Results Around 76% were considered MDR. ESBL was seen in 58% and 50.4% based on DDST and phenotypic confirmation disc-diffusion test (PCDDT), respectively. AmpC was detected in 11.8% and 13.1% using a commercial E-test and boronic acid test, respectively. MBL were identified in 12.8% and 14.8% based on MBL imipenem-EDTA and carba-NP tests, respectively. Co-occurrence of ESBL and AmpC, ESBL and MBL, AmpC and MBL was seen in 5.2%, 11.5%, 1.3%, respectively, whereas a combination of these three β-lactamases was observed in only 0.3% of 304 MDR isolates.
Conclusion The findings highlight a high prevalence of β-lactamases and their co-production among the Enterobacteriaceae, mainly in Klebsiella pneumoniae and Escherichia coli isolates. The study further highlights the necessity to identify the MDR β-lactamases stains for effective therapy in severe as well as mild bacterial infections, thereby enabling to reduce the risk of MDR in hospital and community settings.
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Affiliation(s)
- Thounaojam Salvia
- Department of Microbiology, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Tadong, Gangtok, Sikkim, India
| | - Karma G. Dolma
- Department of Microbiology, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Tadong, Gangtok, Sikkim, India
| | - Om Prakash Dhakal
- Department of Medicine, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Tadong, Gangtok, Sikkim, India
| | - Bidita Khandelwal
- Department of Medicine, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Tadong, Gangtok, Sikkim, India
| | - Laishram Shantikumar Singh
- Department of Microbiology, Assam Down Town University, Guwahati 781026, Assam, India
- Microbial Resource Division, Institute of Bioresources and Sustainable Development (IBSD) Sikkim Centre, DBT, Tadong, Gangtok, Sikkim, India
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Effect of Nanosulfur Against Multidrug-Resistant Staphylococcus pseudintermedius and Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2022; 106:3201-3213. [PMID: 35384449 DOI: 10.1007/s00253-022-11872-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/16/2022] [Accepted: 03/05/2022] [Indexed: 12/11/2022]
Abstract
Multidrug resistance (MDR) has significantly increased in the past decades and the use of nanotechnology has opened new venues for novel treatments. Nanosulfur is a potent antimicrobial agent and a cheaper alternative to other nanomaterials. However, very few studies have been published on its activity against MDR organisms. Therefore, the goal of this in vitro study was to assess cytotoxicity, antimicrobial, and anti-biofilm activity of nanosulfur (47 nm, orthorhombic) against clinical isolates of MDR Staphylococcus pseudintermedius (SP) and Pseudomonas aeruginosa (PA) in planktonic and biofilm state using canine skin explants. Nanosilver (50 nm, spherical) was tested as a comparative control. Concentrations between 1866.7 and 0.11 μg/mL of both nanoparticles were tested. The ultrastructure of nanosulfur was assessed via electron microscopy. Both types of nanoparticles showed no direct cytotoxicity on a canine keratinocyte cell line. In the planktonic phase, nanosulfur was able to inhibit or kill (6-log10 reduction of CFU) 7 of 10 MDR-SP isolates at 233.3 μg/mL, whereas, when in biofilm state, 6 of 10 isolates were killed at different concentrations (233.33 to 1866.7 μg/mL). Nanosilver did not show any antimicrobial or anti-biofilm activity at any concentrations tested. Both types of nanoparticles were ineffective against MDR-PA in either state. Ultrastructurally, nanosulfur was present in individual nanoparticles as well as forming larger nanoclusters. This is the first study showing an antimicrobial and anti-biofilm activity of nanosulfur for MDR-SP in absence of cytotoxicity. Nanosulfur has the potential to be used in veterinary and human medicine as effective, safe, and cheap alternative to antimicrobials and anti-biofilm agents currently available. KEY POINTS: • Nanosulfur is a better alternative than nanosilver to treat MDR-Staphylococci. • Nanosulfur is an effective agent against MDR-Staphyloccocal biofilm. • Canine skin explant model is reliable for testing anti-biofilm agents.
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Fecal microbiota transplantation for Carbapenem-Resistant Enterobacteriaceae: A systematic review. J Infect 2022; 84:749-759. [DOI: 10.1016/j.jinf.2022.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 02/06/2023]
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Progress Report: Antimicrobial Drug Discovery in the Resistance Era. Pharmaceuticals (Basel) 2022; 15:ph15040413. [PMID: 35455410 PMCID: PMC9030565 DOI: 10.3390/ph15040413] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 02/05/2023] Open
Abstract
Antibiotic resistance continues to be a most serious threat to public health. This situation demands that the scientific community increase their efforts for the discovery of alternative strategies to circumvent the problems associated with conventional small molecule therapeutics. The Global Antimicrobial Resistance and Use Surveillance System (GLASS) Report (published in June 2021) discloses the rapidly increasing number of bacterial infections that are mainly caused by antimicrobial-resistant bacteria. These concerns have initiated various government agencies and other organizations to educate the public regarding the appropriate use of antibiotics. This review discusses a brief highlight on the timeline of antimicrobial drug discovery with a special emphasis on the historical development of antimicrobial resistance. In addition, new antimicrobial targets and approaches, recent developments in drug screening, design, and delivery were covered. This review also discusses the emergence and roles of various antibiotic adjuvants and combination therapies while shedding light on current challenges and future perspectives. Overall, the emergence of resistant microbial strains has challenged drug discovery but their efforts to develop alternative technologies such as nanomaterials seem to be promising for the future.
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136
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Jean SS, Harnod D, Hsueh PR. Global Threat of Carbapenem-Resistant Gram-Negative Bacteria. Front Cell Infect Microbiol 2022; 12:823684. [PMID: 35372099 PMCID: PMC8965008 DOI: 10.3389/fcimb.2022.823684] [Citation(s) in RCA: 101] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/15/2022] [Indexed: 01/08/2023] Open
Abstract
Infections caused by multidrug-resistant (MDR) and extensively drug-resistant (XDR) Gram-negative bacteria (GNB), including carbapenem-resistant (CR) Enterobacterales (CRE; harboring mainly blaKPC, blaNDM, and blaOXA-48-like genes), CR- or MDR/XDR-Pseudomonas aeruginosa (production of VIM, IMP, or NDM carbapenemases combined with porin alteration), and Acinetobacter baumannii complex (producing mainly OXA-23, OXA-58-like carbapenemases), have gradually worsened and become a major challenge to public health because of limited antibiotic choice and high case-fatality rates. Diverse MDR/XDR-GNB isolates have been predominantly cultured from inpatients and hospital equipment/settings, but CRE has also been identified in community settings and long-term care facilities. Several CRE outbreaks cost hospitals and healthcare institutions huge economic burdens for disinfection and containment of their disseminations. Parenteral polymyxin B/E has been observed to have a poor pharmacokinetic profile for the treatment of CR- and XDR-GNB. It has been determined that tigecycline is suitable for the treatment of bloodstream infections owing to GNB, with a minimum inhibitory concentration of ≤ 0.5 mg/L. Ceftazidime-avibactam is a last-resort antibiotic against GNB of Ambler class A/C/D enzyme-producers and a majority of CR-P. aeruginosa isolates. Furthermore, ceftolozane-tazobactam is shown to exhibit excellent in vitro activity against CR- and XDR-P. aeruginosa isolates. Several pharmaceuticals have devoted to exploring novel antibiotics to combat these troublesome XDR-GNBs. Nevertheless, only few antibiotics are shown to be effective in vitro against CR/XDR-A. baumannii complex isolates. In this era of antibiotic pipelines, strict implementation of antibiotic stewardship is as important as in-time isolation cohorts in limiting the spread of CR/XDR-GNB and alleviating the worsening trends of resistance.
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Affiliation(s)
- Shio-Shin Jean
- Department of Emergency and Critical Care Medicine, Min-Sheng General Hospital, Taoyuan, Taiwan
- Department of Pharmacy, College of Pharmacy and Health care, Tajen University, Pingtung, Taiwan
| | - Dorji Harnod
- Division of Critical Care Medicine, Department of Emergency and Critical Care Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of Emergency, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Po-Ren Hsueh
- Departments of Laboratory Medicine and Internal Medicine, China Medical University Hospital, School of Medicine, China Medical University, Taichung, Taiwan
- School of Medicine, China Medical University, Taichung, Taiwan
- Ph.D Program for Aging, School of Medicine, China Medical University, Taichung, Taiwan
- Departments of Laboratory Medicine and Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
- *Correspondence: Po-Ren Hsueh,
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Boucherabine S, Nassar R, Zaher S, Mohamed L, Olsen M, Alqutami F, Hachim M, Alkhaja A, Campos M, Jones P, McKirdy S, Alghafri R, Tajouri L, Senok A. Metagenomic Sequencing and Reverse Transcriptase PCR Reveal That Mobile Phones and Environmental Surfaces Are Reservoirs of Multidrug-Resistant Superbugs and SARS-CoV-2. Front Cell Infect Microbiol 2022; 12:806077. [PMID: 35372113 PMCID: PMC8964345 DOI: 10.3389/fcimb.2022.806077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/24/2022] [Indexed: 11/28/2022] Open
Abstract
Background Mobile phones of healthcare workers (HCWs) can act as fomites in the dissemination of microbes. This study was carried out to investigate microbial contamination of mobile phones of HCWs and environmental samples from the hospital unit using a combination of phenotypic and molecular methods. Methods This point prevalence survey was carried out at the Emergency unit of a tertiary care facility. The emergency unit has two zones, a general zone for non-COVID-19 patients and a dedicated COVID-19 zone for confirmed or suspected COVID-19 patients. Swabs were obtained from the mobile phones of HCWs in both zones for bacterial culture and shotgun metagenomic analysis. Metagenomic sequencing of pooled environmental swabs was conducted. RT-PCR for SARS-CoV-2 detection was carried out. Results Bacteria contamination on culture was detected from 33 (94.2%) mobile phones with a preponderance of Staphylococcus epidermidis (n/N = 18/35), Staphylococcus hominis (n/N = 13/35), and Staphylococcus haemolyticus (n/N = 7/35). Two methicillin-sensitive and three methicillin-resistant Staphylococcus aureus, and one pan-drug-resistant carbapenemase producer Acinetobacter baumannii were detected. Shotgun metagenomic analysis showed high signature of Pseudomonas aeruginosa in mobile phone and environmental samples with preponderance of P. aeruginosa bacteriophages. Malassezia and Aspergillus spp. were the predominant fungi detected. Fourteen mobile phones and one environmental sample harbored protists. P. aeruginosa antimicrobial resistance genes mostly encoding for efflux pump systems were detected. The P. aeruginosa virulent factor genes detected were related to motility, adherence, aggregation, and biofilms. One mobile phone from the COVID-19 zone (n/N = 1/5; 20%) had positive SARS-CoV-2 detection while all other phone and environmental samples were negative. Conclusion The findings demonstrate that mobile phones of HCWs are fomites for potentially pathogenic and highly drug-resistant microbes. The presence of these microbes on the mobile phones and hospital environmental surfaces is a concern as it poses a risk of pathogen transfer to patients and dissemination into the community.
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Affiliation(s)
- Syrine Boucherabine
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Rania Nassar
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates.,Oral and Biomedical Sciences, School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, United Kingdom
| | - Shroque Zaher
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Lobna Mohamed
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Matthew Olsen
- Faculty of Health Sciences and Medicine, Bond University, Robina, QLD, Australia
| | - Fatma Alqutami
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Mahmood Hachim
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Abdulmajeed Alkhaja
- Medical Education & Research Department, Dubai Health Authority, Dubai, United Arab Emirates
| | - Mariana Campos
- CSIRO Land and Water, CSIRO Health and Biosecurity, Floreat, WA, Australia
| | - Peter Jones
- Faculty of Health Sciences and Medicine, Bond University, Robina, QLD, Australia
| | - Simon McKirdy
- Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
| | - Rashed Alghafri
- Faculty of Health Sciences and Medicine, Bond University, Robina, QLD, Australia.,Harry Butler Institute, Murdoch University, Murdoch, WA, Australia.,General Department of Forensic Sciences and Criminology, Dubai Police, Dubai, United Arab Emirates.,Dubai Future Council on Community Security and Dubai Police Scientists Council, Duba, United Arab Emirates
| | - Lotti Tajouri
- Faculty of Health Sciences and Medicine, Bond University, Robina, QLD, Australia.,General Department of Forensic Sciences and Criminology, Dubai Police, Dubai, United Arab Emirates.,Dubai Future Council on Community Security and Dubai Police Scientists Council, Duba, United Arab Emirates
| | - Abiola Senok
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
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Vercelli C, Gambino G, Amadori M, Re G. Implications of Veterinary Medicine in the comprehension and stewardship of antimicrobial resistance phenomenon. From the origin till nowadays. Vet Anim Sci 2022; 16:100249. [PMID: 35479515 PMCID: PMC9036142 DOI: 10.1016/j.vas.2022.100249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Antibiotic resistance is a well-known phenomenon with several implications The contribution of Veterinary Medicine is underestimated. It was believed that only livestock was responsible for antibiotic resistance. Companion animals, wild animals and environment are more involved than estimated. Educational tools for public and more veterinary specialists are needed.
Antimicrobial resistance (AMR) is defined by the entire scientific community as the major threat for human health and it is responsible for an increase in morbidity and mortality rates. The reasons behind this phenomenon are complex and the solution is achievable only considering the One Health approach, that encompasses the integration and implementation of human health, veterinary medicine and environmental status. Authors aimed to write this review to summarize to readers the three milestones of One-Health, underlying the most important topics in which veterinary medicine is mostly involved. Therefore, a short introduction about the history of AMR in veterinary medicine is provided, then more detailed aspects about the impact of AMR related to pets, food producing animals, wild animals and environment are discussed. Finally, some critical aspects about current and future issues are considered.
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Affiliation(s)
- Cristina Vercelli
- Department of Veterinary Science, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco (Turin), Italy
- Corresponding author.
| | - Graziana Gambino
- Department of Veterinary Science, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco (Turin), Italy
| | | | - Giovanni Re
- Department of Veterinary Science, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco (Turin), Italy
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Rabiee N, Ahmadi S, Akhavan O, Luque R. Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria. MATERIALS (BASEL, SWITZERLAND) 2022; 15:1799. [PMID: 35269031 PMCID: PMC8911831 DOI: 10.3390/ma15051799] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 01/27/2023]
Abstract
Several pieces of research have been done on transition metal nanoparticles and their nanocomplexes as research on their physical and chemical properties and their relationship to biological features are of great importance. Among all their biological properties, the antibacterial and antimicrobial are especially important due to their high use for human needs. In this article, we will discuss the different synthesis and modification methods of silver (Ag) and gold (Au) nanoparticles and their physicochemical properties. We will also review some state-of-art studies and find the best relationship between the nanoparticles' physicochemical properties and potential antimicrobial activity. The possible antimicrobial mechanism of these types of nanoparticles will be discussed in-depth as well.
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Affiliation(s)
- Navid Rabiee
- Department of Physics, Sharif University of Technology, Tehran 11155-9161, Iran;
- School of Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran;
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran
| | - Omid Akhavan
- Department of Physics, Sharif University of Technology, Tehran 11155-9161, Iran;
| | - Rafael Luque
- Departamento de Química Orgánica, Campus de Rabanales, Universidad de Córdoba, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014 Cordoba, Spain
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Ramírez-Rendon D, Passari AK, Ruiz-Villafán B, Rodríguez-Sanoja R, Sánchez S, Demain AL. Impact of novel microbial secondary metabolites on the pharma industry. Appl Microbiol Biotechnol 2022; 106:1855-1878. [PMID: 35188588 PMCID: PMC8860141 DOI: 10.1007/s00253-022-11821-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/31/2022] [Accepted: 02/05/2022] [Indexed: 12/18/2022]
Abstract
Abstract Microorganisms are remarkable producers of a wide diversity of natural products that significantly improve human health and well-being. Currently, these natural products comprise half of all the pharmaceuticals on the market. After the discovery of penicillin by Alexander Fleming 85 years ago, the search for and study of antibiotics began to gain relevance as drugs. Since then, antibiotics have played a valuable role in treating infectious diseases and have saved many human lives. New molecules with anticancer, hypocholesterolemic, and immunosuppressive activity have now been introduced to treat other relevant diseases. Smaller biotechnology companies and academic laboratories generate novel antibiotics and other secondary metabolites that big pharmaceutical companies no longer develop. The purpose of this review is to illustrate some of the recent developments and to show the potential that some modern technologies like metagenomics and genome mining offer for the discovery and development of new molecules, with different functions like therapeutic alternatives needed to overcome current severe problems, such as the SARS-CoV-2 pandemic, antibiotic resistance, and other emerging diseases. Key points • Novel alternatives for the treatment of infections caused by bacteria, fungi, and viruses. • Second wave of efforts of microbial origin against SARS-CoV-2 and related variants. • Microbial drugs used in clinical practice as hypocholesterolemic agents, immunosuppressants, and anticancer therapy.
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Affiliation(s)
- Dulce Ramírez-Rendon
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, 04510, Mexico City, Mexico
| | - Ajit Kumar Passari
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, 04510, Mexico City, Mexico
| | - Beatriz Ruiz-Villafán
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, 04510, Mexico City, Mexico
| | - Romina Rodríguez-Sanoja
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, 04510, Mexico City, Mexico
| | - Sergio Sánchez
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, 04510, Mexico City, Mexico.
| | - Arnold L Demain
- Charles A. Dana Research Institute for Scientists Emeriti (R.I.S.E.), Drew University, Madison, NJ, 07940, USA
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Habibinava F, Soleimani M, Sabouri S, Zargar M, Zolfaghari MR. Isolating and sequencing vB_Kpn_3, a lytic bacteriophage against multidrug-resistant Klebsiella pneumoniae. Future Microbiol 2022; 17:235-249. [PMID: 35152708 DOI: 10.2217/fmb-2020-0272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Phage therapy, as an effective and specific method in the treatment of multidrug-resistant (MDR) bacterial infections, has attracted the attention of many researchers. Methods and results: In this study, a double-stranded DNA phage with the ability of lysing some strains of MDR Klebsiella pneumoniae (vB_Kpn_3) was isolated from hospitals' wastewater and then characterized morphologically and genetically. Transmission electron microscopy and genetic analyses have revealed that vB_Kpn_3 is a member of Siphoviridae family. One-step growth curve also showed a burst time of 35 min and a burst size of 31 PFU/ml. The genome of the phage is composed of 112,080 bp with 41.33% G + C content carrying 186 open reading frames. Conclusion: vB_Kpn_3 is a broad host range phage that infects MDR K. pneumoniae and some other species of Enterobacteriaceae such as Escherichia coli and Salmonella typhi. In addition, no antibiotic resistance and toxin genes were detected in its genome.
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Affiliation(s)
- Fatemeh Habibinava
- Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
| | - Mohammad Soleimani
- Department of Microbiology, Faculty of Medicine, AjA University of Medical Sciences, Tehran, Iran
| | - Salehe Sabouri
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohsen Zargar
- Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
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Application of Biochar as Functional Material for Remediation of Organic Pollutants in Water: An Overview. Catalysts 2022. [DOI: 10.3390/catal12020210] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In recent years, numerous studies have focused on the use of biochar as a biological material for environmental remediation due to its low-cost precursor (waste), low toxicity, and diversity of active sites, along with their facile tailoring techniques. Due to its versatility, biochar has been employed as an adsorbent, catalyst (for activating hydrogen peroxide, ozone, persulfate), and photocatalyst. This review aims to provide a comprehensive overview and compare the application of biochar in water remediation. First, the biochar active sites with their functions are presented. Secondly, an overview and summary of biochar performance in treating organic pollutants in different systems is depicted. Thereafter, an evaluation on performance, removal mechanism, active sites involvement, tolerance to different pH values, stability, and reusability, and an economic analysis of implementing biochar for organic pollutants decontamination in each application is presented. Finally, potential prospects to overcome the drawbacks of each application are provided.
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Esmaeilnia M, Saffari M, Rashki S, Marzhoseyni Z, Khaledi A, Moosavi GA, Atoof F, Alani B. Molecular typing of clinical and environmental isolates of Klebsiella pneumoniae producing ESBLs by PFGE. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2022; 25:208-213. [PMID: 35655602 PMCID: PMC9124538 DOI: 10.22038/ijbms.2022.58445.12981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 01/11/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Klebsiella pneumoniae is the common cause of pneumonia in hospitalized patients, particularly in intensive care units (ICU). The infection can transfer by medical equipment such as mechanical ventilators. This study aimed to investigate the molecular typing of the extended-spectrum beta-lactamase-producing K. pneumoniae isolates recovered from Beheshti Hospital, Kashan, Iran. MATERIALS AND METHODS K. pneumoniae isolates producing ESBLs have been collected from the samples obtained from Shahid Beheshti hospital, Kashan, Iran. Antimicrobial susceptibility was determined using the Kirby Bauer disk diffusion method. The presence of ESBLs was evaluated using CLSI for ESBL screening by the double-disk diffusion method. Molecular typing was conducted by pulsed-field gel electrophoresis (PFGE). In total, 89 K. pneumoniae isolates were recovered, of which 47.1% were ESBL producers. RESULTS Results showed that all of the clinical and environmental isolates were resistant to ceftriaxone, meropenem, cefazolin, cefotaxime, cephalothin, and piperacillin-tazobactam. All isolates were grouped under four clusters (A-D). The major cluster was related to the C cluster with 22 isolates (19 clinical and 3 environmental). Seventy-two percent of isolates were from the ICU ward. There was no correlation between antibiotic resistance patterns and PFGE clusters (P=0.2). CONCLUSION We observed a common molecular signature among both clinical and environmental K. pneumoniae isolates, indicating a similar genotype and likely a common origin for ESBL producer isolates found in different hospital wards. Therefore, hospitals need to implement an effective infection control system to decrease the spreading of ESBL strains within the hospitals and subsequently the transmission of the infection to patients.
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Affiliation(s)
- Mohammad Esmaeilnia
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Science, Kashan, Iran, Infectious Diseases Research Center, Kashan University of Medical Science, Kashan, Iran
| | - Mahmood Saffari
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Science, Kashan, Iran, Infectious Diseases Research Center, Kashan University of Medical Science, Kashan, Iran
| | - Somaye Rashki
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Science, Kashan, Iran, Infectious Diseases Research Center, Kashan University of Medical Science, Kashan, Iran
| | - Zeynab Marzhoseyni
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Science, Kashan, Iran, Infectious Diseases Research Center, Kashan University of Medical Science, Kashan, Iran
| | - Azad Khaledi
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Science, Kashan, Iran, Infectious Diseases Research Center, Kashan University of Medical Science, Kashan, Iran,Corresponding author: Azad Khaledi. Department of Microbiology and Immunology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran. Tel: +98-31-55443022;
| | - Gholam Abbas Moosavi
- Department of Vital Statistics and Epidemiology, School of Health, Kashan University of Medical Sciences, Kashan, Iran
| | - Fatemeh Atoof
- Department of Biostatistics, Health Faculty, Kashan University of Medical Sciences, Kashan, Iran
| | - Behrang Alani
- Department of Applied Cell Sciences, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
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Ivanova I, Svilenska T, Kurz B, Grobecker S, Maisch T, Berneburg M, Kamenisch Y. Improved Spectral Purity of 222-nm Irradiation Eliminates Detectable CPD Formation in Skin Reconstructs even at High and Repetitive Disinfecting Doses. Photochem Photobiol 2022; 98:1149-1156. [PMID: 35048373 DOI: 10.1111/php.13594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 12/01/2022]
Abstract
UVC222nm has germicidal effects with potential clinical applications. However, UVC irradiation is capable of inducing DNA damage like cyclobutylpyrimidine dimers (CPD). Although new devices have emission peaks in the short-wavelength region of UVC (~222nm), the remaining "collateral" radiation at longer wavelengths could be harmful to human health. We investigated the DNA damage caused by far-UVC 222nm KrCl exciplex radiation on human skin reconstructs after additional filtering using silica filters. The skin reconstructs were irradiated with 100mJ/cm2 , 500mJ/cm2 , and 3x500mJ/cm2 unfiltered and filtered (230 - 270 nm suppressed) far-UVC or UVB (308nm) radiation. UVB and non-filtered UVC irradiation induced a significant amount of CPDs, compared to the background. Filtered far-UVC lowered the CPD amount compared to unfiltered UVC and UVB treatments. Repetitive UVC irradiation did not result in the accumulation of CPDs compared to UVB treatment. Reduction in excess of 99.9% of E. coli, S. aureus and C. albicans was detected after applying far-UVC radiation. This identifies a therapeutic window in which microorganisms are killed but tissue is still alive and not damaged, which could give rise to new clinical applications.
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Affiliation(s)
- Irina Ivanova
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - Teodora Svilenska
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - Bernadett Kurz
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - Sonja Grobecker
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - Tim Maisch
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - Mark Berneburg
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - York Kamenisch
- Department of Dermatology, University Hospital Regensburg, 93042, Regensburg, Germany
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Tsilipounidaki K, Athanasakopoulou Z, Müller E, Burgold-Voigt S, Florou Z, Braun SD, Monecke S, Gatselis NK, Zachou K, Stefos A, Tsagalas I, Sofia M, Spyrou V, Billinis C, Dalekos GN, Ehricht R, Petinaki E. Plethora of Resistance Genes in Carbapenem-Resistant Gram-Negative Bacteria in Greece: No End to a Continuous Genetic Evolution. Microorganisms 2022; 10:microorganisms10010159. [PMID: 35056608 PMCID: PMC8781379 DOI: 10.3390/microorganisms10010159] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 12/02/2022] Open
Abstract
Carbapenem-resistant Gram-negative bacteria are a public health threat that requires urgent action. The fact that these pathogens commonly also harbor resistance mechanisms for several other antimicrobial classes further reduces patient treatment options. The present study aimed to provide information regarding the multidrug resistance genetic background of carbapenem-resistant Gram-negative bacteria in Central Greece. Strains from a tertiary care hospital, collected during routine practice, were characterized using a DNA microarray-based assay. Various different resistance determinants for carbapenems, other beta-lactams, aminoglycosides, quinolones, trimethoprim, sulfonamides and macrolides were detected among isolates of the same sequence type. Eighteen different multidrug resistance genomic profiles were identified among the twenty-four K. pneumoniae ST258, seven different profiles among the eight K. pneumoniae ST11, four profiles among the six A. baumannii ST409 and two among the three K. oxytoca. This report describes the multidrug resistance genomic background of carbapenem-resistant Gram-negative bacteria from a tertiary care hospital in Central Greece, providing evidence of their continuous genetic evolution.
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Affiliation(s)
- Katerina Tsilipounidaki
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Zoi Athanasakopoulou
- Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece; (Z.A.); (M.S.); (C.B.)
| | - Elke Müller
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany; (E.M.); (S.B.-V.); (S.D.B.); (S.M.); (R.E.)
- InfectoGnostics Research Campus, 07743 Jena, Germany
| | - Sindy Burgold-Voigt
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany; (E.M.); (S.B.-V.); (S.D.B.); (S.M.); (R.E.)
- InfectoGnostics Research Campus, 07743 Jena, Germany
| | - Zoi Florou
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Sascha D. Braun
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany; (E.M.); (S.B.-V.); (S.D.B.); (S.M.); (R.E.)
- InfectoGnostics Research Campus, 07743 Jena, Germany
| | - Stefan Monecke
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany; (E.M.); (S.B.-V.); (S.D.B.); (S.M.); (R.E.)
- InfectoGnostics Research Campus, 07743 Jena, Germany
- Institut fuer Medizinische Mikrobiologie und Hygiene, Universitätsklinikum Dresden, 01307 Dresden, Germany
| | - Nikolaos K. Gatselis
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Kalliopi Zachou
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Aggelos Stefos
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Ilias Tsagalas
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Marina Sofia
- Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece; (Z.A.); (M.S.); (C.B.)
| | - Vassiliki Spyrou
- Faculty of Animal Science, University of Thessaly, 41110 Larissa, Greece;
| | - Charalambos Billinis
- Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece; (Z.A.); (M.S.); (C.B.)
- Faculty of Public and One Health, University of Thessaly, 43100 Karditsa, Greece
| | - George N. Dalekos
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
| | - Ralf Ehricht
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany; (E.M.); (S.B.-V.); (S.D.B.); (S.M.); (R.E.)
- InfectoGnostics Research Campus, 07743 Jena, Germany
- Institute of Physical Chemistry, Friedrich Schiller University Jena, 07737 Jena, Germany
| | - Efthymia Petinaki
- Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (K.T.); (Z.F.); (N.K.G.); (K.Z.); (A.S.); (I.T.); (G.N.D.)
- Correspondence:
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146
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Di Giacomo S, Toussaint F, Ledesma-García L, Knoops A, Vande Capelle F, Fremaux C, Horvath P, Ladrière JM, Ait-Abderrahim H, Hols P, Mignolet J. OUP accepted manuscript. FEMS Microbiol Rev 2022; 46:6543703. [PMID: 35254446 PMCID: PMC9300618 DOI: 10.1093/femsre/fuac014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/14/2022] [Accepted: 03/01/2022] [Indexed: 11/14/2022] Open
Abstract
Nowadays, the growing human population exacerbates the need for sustainable resources. Inspiration and achievements in nutrient production or human/animal health might emanate from microorganisms and their adaptive strategies. Here, we exemplify the benefits of lactic acid bacteria (LAB) for numerous biotechnological applications and showcase their natural transformability as a fast and robust method to hereditarily influence their phenotype/traits in fundamental and applied research contexts. We described the biogenesis of the transformation machinery and we analyzed the genome of hundreds of LAB strains exploitable for human needs to predict their transformation capabilities. Finally, we provide a stepwise rational path to stimulate and optimize natural transformation with standard and synthetic biology techniques. A comprehensive understanding of the molecular mechanisms driving natural transformation will facilitate and accelerate the improvement of bacteria with properties that serve broad societal interests.
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Affiliation(s)
- Stefano Di Giacomo
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5, (box L7.07.06), B-1348 Louvain-la-Neuve, Belgium
| | - Frédéric Toussaint
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5, (box L7.07.06), B-1348 Louvain-la-Neuve, Belgium
| | - Laura Ledesma-García
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5, (box L7.07.06), B-1348 Louvain-la-Neuve, Belgium
| | - Adrien Knoops
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5, (box L7.07.06), B-1348 Louvain-la-Neuve, Belgium
| | - Florence Vande Capelle
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5, (box L7.07.06), B-1348 Louvain-la-Neuve, Belgium
| | - Christophe Fremaux
- Health and Biosciences, IFF Danisco France SAS, CS 10010, F-86220 Dangé-Saint-Romain, France
| | - Philippe Horvath
- Health and Biosciences, IFF Danisco France SAS, CS 10010, F-86220 Dangé-Saint-Romain, France
| | - Jean-Marc Ladrière
- Health and Biosciences, IFF Danisco France SAS, CS 10010, F-86220 Dangé-Saint-Romain, France
| | | | - Pascal Hols
- Corresponding author: Biochemistry and Genetics of Microorganisms, Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Croix du Sud 4-5 (box L7.07.06), B-1348 Louvain-La-Neuve, Belgium. Tel: +3210478896; Fax: +3210472825; E-mail:
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147
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Huang G, Shen H, Chen X, Wu T, Chen Z, Chen Y, Song J, Cai Q, Bai Y, Pu H, Feng X. A Degradable, Broad-Spectrum and Resistance-Resistant Antimicrobial Oligoguanidine as Disinfecting and Therapeutic Agent in Aquaculture. Polym Chem 2022. [DOI: 10.1039/d2py00183g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The threat of antibiotic resistance to community healthcare and global economy has raised extensive concern, and the over-use of antibiotics in animal husbandry plays a significant role in the occurrence...
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148
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Prediction of Potential Drug Targets and Vaccine Candidates Against Antibiotic-Resistant Pseudomonas aeruginosa. Int J Pept Res Ther 2022; 28:160. [PMCID: PMC9640888 DOI: 10.1007/s10989-022-10463-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2022] [Indexed: 11/09/2022]
Abstract
Pseudomonas aeruginosa is one of the leading causes of nosocomial infections, characterized by increasing antibiotic resistance, severity and mortality. Therefore, numerous efforts have been made nowadays to identify new therapeutic targets. This study aimed to find potential drug targets and vaccine candidates in drug-resistant strains of P. aeruginosa. Extensive antibiotic-resistant and carbapenem-resistant strains of P. aeruginosa with complete genome were selected and ten common hypothetical proteins (HPs) containing more than 200 amino acids were obtained. The structural, functional and immunological predictions of these HPs were performed with the utility of bioinformatics approaches. Two common HPs (Gene ID: 2877781645 and 2877781936) among other investigated proteins were revealed as potential candidates for pharmaceutical and vaccine purposes based on structural and physicochemical properties, functional domains, subcellular localizations, signal peptides, toxicity, virulence factor, antigenicity, allergenicity and immunoinformatic predictions. The consequence of this predictive study will assist in novel drug and vaccine design through experimental investigations.
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149
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Al-Warhi T, Elimam DM, Elsayed ZM, Abdel-Aziz MM, Maklad RM, Al-Karmalawy AA, Afarinkia K, Abourehab MAS, Abdel-Aziz HA, Eldehna WM. Development of novel isatin thiazolyl-pyrazoline hybrids as promising antimicrobials in MDR pathogens. RSC Adv 2022; 12:31466-31477. [PMID: 36382148 PMCID: PMC9629177 DOI: 10.1039/d2ra04385h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/27/2022] [Indexed: 11/07/2022] Open
Abstract
Microbial Multidrug Resistance (MDR) is an emerging global crisis. Derivatization of natural or synthetic scaffolds is among the most reliable strategies to search for and obtain novel antimicrobial agents for the treatment of MDR infections. Here, we successfully manipulated the synthetically flexible isatin moieties to synthesize 22 thiazolyl-pyrazolines hybrids, and assessed their potential antimicrobial activities in vitro against various MDR pathogens, using the broth microdilution calorimetric XTT reduction method. We chose 5 strains to represent the major MDR microorganisms, viz: Methicillin-resistant S. aureus (MRSA), and Vancomycin-resistant E. faecalis (VRE) as Gram-positive bacteria; Carbapenem-resistant K. pneumonia (CRKP), and Extended-spectrum beta-lactamase E. coli (ESBL-E), as Gram-negative bacteria; and Fluconazole-resistant C. albicans (FRCA), as a yeast-like unicellular fungus. The cytotoxicity of compounds 9f and 10h towards mammalian lung fibroblast (MRC-5) cells demonstrated their potential satisfactory safety margin as represented by their relatively high IC50 values. The target compounds showed promising anti-MDR activities, suggesting they are potential leads for further development and in vivo studies. As promising antimicrobials against MDR pathogens, two novel series of isatin thiazolyl-pyrazoline conjugates were developed. Compounds 9f and 10h were the most effective against the tested MDR strains.![]()
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Affiliation(s)
- Tarfah Al-Warhi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Diaaeldin M. Elimam
- Department of Pharmacognosy, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Zainab M. Elsayed
- Scientific Research and Innovation Support Unit, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Marwa M. Abdel-Aziz
- The Regional Center for Mycology & Biotechnology, Al-Azhar University, Cairo, Egypt
| | - Raed M. Maklad
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Ahmed A. Al-Karmalawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza, 12566, Egypt
| | - Kamyar Afarinkia
- Institute of Cancer Therapeutics, University of Bradford, Bradford, BD7 1DP, UK
| | - Mohammed A. S. Abourehab
- Department of Pharmaceutics, Faculty of Pharmacy, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Hatem A. Abdel-Aziz
- Department of Applied Organic Chemistry, National Research Center, P.O. Box 12622, Dokki, Giza, Egypt
| | - Wagdy M. Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
- School of Biotechnology, Badr University in Cairo, Badr City, 11829, Egypt
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150
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KALAYCI YÜKSEK F, GÜMÜŞ D, BAYIRLI TURAN DBT, NAKİPOĞLU Y, ADALETİ R, KÜÇÜKER AM. Cell-free supernatants of lactobacilli inhibit methicilin-resistant staphylococcus aureus, vancomycin-resistant enterococcus and carbapenem-resistant klebsiella strains. EGE TIP DERGISI 2021. [DOI: 10.19161/etd.1037310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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