1
|
Nieto-Rosado M, Sands K, Portal EAR, Thomson KM, Carvalho MJ, Mathias J, Milton R, Dyer C, Akpulu C, Boostrom I, Hogan P, Saif H, Sanches Ferreira AD, Hender T, Portal B, Andrews R, Watkins WJ, Zahra R, Shirazi H, Muhammad A, Ullah SN, Jan MH, Akif S, Iregbu KC, Modibbo F, Uwaezuoke S, Audu L, Edwin CP, Yusuf AH, Adeleye A, Mukkadas AS, Mazarati JB, Rucogoza A, Gaju L, Mehtar S, Bulabula ANH, Whitelaw A, Roberts L, Chan G, Bekele D, Solomon S, Abayneh M, Metaferia G, Walsh TR. Colonisation of hospital surfaces from low- and middle-income countries by extended spectrum β-lactamase- and carbapenemase-producing bacteria. Nat Commun 2024; 15:2758. [PMID: 38553439 PMCID: PMC10980694 DOI: 10.1038/s41467-024-46684-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 03/06/2024] [Indexed: 04/02/2024] Open
Abstract
Hospital surfaces can harbour bacterial pathogens, which may disseminate and cause nosocomial infections, contributing towards mortality in low- and middle-income countries (LMICs). During the BARNARDS study, hospital surfaces from neonatal wards were sampled to assess the degree of environmental surface and patient care equipment colonisation by Gram-negative bacteria (GNB) carrying antibiotic resistance genes (ARGs). Here, we perform PCR screening for extended-spectrum β-lactamases (blaCTX-M-15) and carbapenemases (blaNDM, blaOXA-48-like and blaKPC), MALDI-TOF MS identification of GNB carrying ARGs, and further analysis by whole genome sequencing of bacterial isolates. We determine presence of consistently dominant clones and their relatedness to strains causing neonatal sepsis. Higher prevalence of carbapenemases is observed in Pakistan, Bangladesh, and Ethiopia, compared to other countries, and are mostly found in surfaces near the sink drain. Klebsiella pneumoniae, Enterobacter hormaechei, Acinetobacter baumannii, Serratia marcescens and Leclercia adecarboxylata are dominant; ST15 K. pneumoniae is identified from the same ward on multiple occasions suggesting clonal persistence within the same environment, and is found to be identical to isolates causing neonatal sepsis in Pakistan over similar time periods. Our data suggests persistence of dominant clones across multiple time points, highlighting the need for assessment of Infection Prevention and Control guidelines.
Collapse
Affiliation(s)
- Maria Nieto-Rosado
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK.
- Division of Infection and Immunity, Cardiff University, Cardiff, UK.
| | - Kirsty Sands
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Edward A R Portal
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Kathryn M Thomson
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Maria J Carvalho
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
- Department of Medical Sciences, Institute of Biomedicine, University of Aveiro, Aveiro, Portugal
| | - Jordan Mathias
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Rebecca Milton
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
- Centre for Trials Research, Cardiff University, Cardiff, UK
| | - Calie Dyer
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
- Centre for Trials Research, Cardiff University, Cardiff, UK
| | - Chinenye Akpulu
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Ian Boostrom
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Patrick Hogan
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Habiba Saif
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Ana D Sanches Ferreira
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
- Parasites and Microbes Programme, Wellcome Sanger Institute Hinxton, Hinxton, UK
| | - Thomas Hender
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Barbra Portal
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Robert Andrews
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - W John Watkins
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Rabaab Zahra
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Haider Shirazi
- Pakistan Institute of Medical Sciences, Islamabad, Pakistan
| | - Adil Muhammad
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Syed Najeeb Ullah
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Hilal Jan
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shermeen Akif
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | | | | | | | | | - Chinago P Edwin
- Department of Microbiology, Medway Maritime Hospital NHS Foundation Trust, Gillingham, Kent, UK
- Aminu Kano Teaching Hospital, Kano, Nigeria
| | | | - Adeola Adeleye
- Murtala Muhammad Specialist Hospital, Kano City, Nigeria
| | | | | | - Aniceth Rucogoza
- The National Reference Laboratory, Rwanda Biomedical Centre, Kigali, Rwanda
| | - Lucie Gaju
- The National Reference Laboratory, Rwanda Biomedical Centre, Kigali, Rwanda
| | - Shaheen Mehtar
- Unit of IPC, Stellenbosch University, Cape Town, South Africa
- Infection Control Africa Network, Cape Town, South Africa
| | - Andrew N H Bulabula
- Infection Control Africa Network, Cape Town, South Africa
- Department of Global Health, Stellenbosch University, Cape Town, South Africa
| | - Andrew Whitelaw
- Division of Medical Microbiology, Stellenbosch University, Cape Town, South Africa
- National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa
| | - Lauren Roberts
- Division of Medical Microbiology, Stellenbosch University, Cape Town, South Africa
| | - Grace Chan
- Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pediatrics and Child Health, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Delayehu Bekele
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, USA
- Department of Obstetrics and Gynecology, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Semaria Solomon
- Department of Microbiology, Immunology and Parasitology, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Mahlet Abayneh
- Department of Pediatrics and Child Health, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Gesit Metaferia
- Department of Microbiology, Immunology and Parasitology, St Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Timothy R Walsh
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, UK
- Division of Infection and Immunity, Cardiff University, Cardiff, UK
| |
Collapse
|
2
|
Hanafiah A, Sukri A, Yusoff H, Chan CS, Hazrin-Chong NH, Salleh SA, Neoh HM. Insights into the Microbiome and Antibiotic Resistance Genes from Hospital Environmental Surfaces: A Prime Source of Antimicrobial Resistance. Antibiotics (Basel) 2024; 13:127. [PMID: 38391513 PMCID: PMC10885873 DOI: 10.3390/antibiotics13020127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
Hospital environmental surfaces are potential reservoirs for transmitting hospital-associated pathogens. This study aimed to profile microbiomes and antibiotic resistance genes (ARGs) from hospital environmental surfaces using 16S rRNA amplicon and metagenomic sequencing at a tertiary teaching hospital in Malaysia. Samples were collected from patient sinks and healthcare staff counters at surgery and orthopaedic wards. The samples' DNA were subjected to 16S rRNA amplicon and shotgun sequencing to identify bacterial taxonomic profiles, antibiotic resistance genes, and virulence factor pathways. The bacterial richness was more diverse in the samples collected from patient sinks than those collected from staff counters. Proteobacteria and Verrucomicrobia dominated at the phylum level, while Bacillus, Staphylococcus, Pseudomonas, and Acinetobacter dominated at the genus level. Staphylococcus epidermidis and Staphylococcus aureus were prevalent on sinks while Bacillus cereus dominated the counter samples. The highest counts of ARGs to beta-lactam were detected, followed by ARGs against fosfomycin and cephalosporin. We report the detection of mcr-10.1 that confers resistance to colistin at a hospital setting in Malaysia. The virulence gene pathways that aid in antibiotic resistance gene transfer between bacteria were identified. Environmental surfaces serve as potential reservoirs for nosocomial infections and require mitigation strategies to control the spread of antibiotic resistance bacteria.
Collapse
Affiliation(s)
- Alfizah Hanafiah
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | - Asif Sukri
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Hamidah Yusoff
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | | | - Nur Hazlin Hazrin-Chong
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Sharifah Azura Salleh
- Infection Control Unit, Hospital Canselor Tuanku Muhriz, Cheras, Kuala Lumpur 56000, Malaysia
| | - Hui-Min Neoh
- UKM Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| |
Collapse
|
3
|
Tata P, Ganesan R, Ray Dutta J. Amplifying bactericidal activity: Surfactant-mediated AgBr thin film coating over two-dimensional vertically aligned ZnO nanorods for dark-light dual mode disinfection. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 250:112815. [PMID: 37995494 DOI: 10.1016/j.jphotobiol.2023.112815] [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: 09/26/2023] [Revised: 11/10/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023]
Abstract
Thin film coatings with potent antibacterial properties find critical applications in diverse domains such as medical devices, frequently touched surfaces, and food packaging for combating microbial proliferation across diverse scenarios. Two-dimensional photocatalytic antimicrobial coatings, offering a substantial actual-to-apparent surface ratio, hold immense potential for achieving this objective. However, realizing antibacterial performance not just under light but also in dark conditions remains a challenge. To address this, we present AgBr-coated vertically aligned ZnO nanorods (NRs) thin film architecture, employing a unique surfactant-mediated solution-phase spin-coating approach for achieving uniform deposition of AgBr onto ZnO NRs. The resulting ZnO NRs/AgBr heterojunction architectures have been characterized for their microstructural, morphological, elemental, optical, and wettability attributes. The studies have ascertained the tunability of AgBr content by modulating the concentration of its surfactant-based precursor solution. Further, valence band (VB) analyses revealed an increase in the electron density near to the VB edge. The dual role of AgBr as an antimicrobial agent and a photosensitizer, effectively enhancing the visible-light photodisinfection efficacy of ZnO NRs, has been evident through the dark-light dual mode antibacterial studies. Electron paramagnetic resonance measurements have shown hydroxyl radicals being majorly responsible for the visible-light photodisinfection performance. Encouragingly, reusability assessments showcase significant promise, while artificial sweat-wiping studies on the structures unveil heightened photodisinfection efficacy. This enhancement could be attributed to components like urea and lactic acid, speculated to augment the photocatalytic efficiency by minimizing charge recombination.
Collapse
Affiliation(s)
- Pranathi Tata
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
| | - Ramakrishnan Ganesan
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India.
| | - Jayati Ray Dutta
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India.
| |
Collapse
|
4
|
Deilamani MO, Nikkhahi F, Bakht M, Ali Alizadeh S, Fardsanei F, Javadi A, Marashi SMA, Aslanimehr M, Peymani A. Evaluation of ethanol and EDTA concentrations in the expression of biofilm-producing smf-1, rpfF genes in XDR clinical isolates of Stenotrophomonas maltophilia. BMC Microbiol 2023; 23:277. [PMID: 37775770 PMCID: PMC10542227 DOI: 10.1186/s12866-023-03008-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/05/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Stenotrophomonas maltophilia is able to cause infections in immunocompromised patients, and the treatment of this opportunistic pathogen is complicated due to its virulence factors, antibiotic resistance, and the ability of the bacteria to produce biofilm. The main goals of this study were to assess the susceptibility of extensively drug-resistant (XDR) isolates to ethanol and EDTA, and evaluating the synergistic effect of these disinfectants, and also survey the effect of exposure to sub-inhibitory concentrations of ethanol and EDTA on the expression of biofilm-producing smf-1, rpfF genes. RESULTS The results showed that EDTA significantly increased the effectiveness of the ethanol and have a synergistic effect. All of the 10 XDR isolates included in the current study harbored smf-1 and rpfF genes and produced biofilm. After exposure to MIC, sub-MIC, synergism, and sub-synergism of ethanol and EDTA, the expression of smf-1 and rpfF genes was repressed significantly. CONCLUSION In the current study, it was indicated that the expression of biofilm-producing genes was repressed when bacteria are exposed to different concentrations of ethanol and EDTA. Future studies should include more complex microbial communities residing in the hospitals, and more disinfectants use in hospitals. Expression of other virulence genes in different conditions is suggested.
Collapse
Affiliation(s)
- Mohadeseh Ostovari Deilamani
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
- Student research committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Farhad Nikkhahi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| | - Mehdi Bakht
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
- Student research committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Safar Ali Alizadeh
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| | - Fatemeh Fardsanei
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran.
| | - Amir Javadi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| | - Seyed Mahmoud Amin Marashi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| | - Masoumeh Aslanimehr
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| | - Amir Peymani
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, PO Box: 34199-15315, Qazvin, Iran
| |
Collapse
|
5
|
Abayneh M, Zeynudin A, Tamrat R, Tadesse M, Tamirat A. Drug resistance and extended-spectrum β-lactamase (ESBLs) - producing Enterobacteriaceae, Acinetobacter and Pseudomonas species from the views of one-health approach in Ethiopia: a systematic review and meta-analysis. ONE HEALTH OUTLOOK 2023; 5:12. [PMID: 37697359 PMCID: PMC10496308 DOI: 10.1186/s42522-023-00088-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 08/10/2023] [Indexed: 09/13/2023]
Abstract
BACKGROUND Although antimicrobial resistance (AMR) bacteria present a significant and ongoing public health challenge, its magnitude remains poorly understood, especially in many parts of the developing countries. Hence, this review was conducted to describe the current pooled prevalence of drug resistance, multidrug- resistance (MDR), and Extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae, Acinetobacter, and Pseudomonas species in humans, the environment, and animals or food of animal origin in Ethiopia. METHODS PubMed, Google Scholar, and other sources were searched for relevant articles as per the preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines. A critical appraisal for screening, eligibility, and inclusion in the meta-analysis was made based on the Joanna Briggs Institute's (JBI) essential appraisal tools. The meta-analysis was done on Statistical Software Package (STATA) version 17.0. RESULTS A total of 33 research articles were included in this systematic review and meta-analysis. Escherichia coli, Klebsiella species, Acinetobacter, and Pseudomonas species were the most frequently reported bacteria from two or more sources. More than 50% of Klebsiella species and 25% to 89% of Escherichia coli from two or more sources were resistant to all analysed antibiotics, except carbapenems. Fifty-five percent (55%) to 84% of Acinetobacter species and 33% to 79% of Pseudomonas species from human and environmental sources were resistant to all analyzed antibiotics. Carbapenem resistance was common in Acinetobacter and Pseudomonas species (38% to 64%) but uncommon in Enterobacteriaceae (19% to 44%). Acinetobacter species (92%), Klebsiella species (86%), and Pseudomonas species (79%) from human sources, and Proteus species (92%), and Acinetobacter species (83%), from environmental sources, were the common multidrug-resistant isolates. About 45% to 67% of E. coli, Klebsiella, Acinetobacter, and Pseudomonas species from human and environmental sources were ESBL producers. CONCLUSION Our review report concluded that there was a significant pooled prevalence of drug resistance, MDR, and ESBL-producing Enterobacteriaceae, Acinetobacter, and Pseudomonas species from two or more sources. Hence, our finding underlines the need for the implementation of integrated intervention approaches to address the gaps in reducing the emergence and spread of antibiotic- resistant bacteria.
Collapse
Affiliation(s)
- Mengistu Abayneh
- College of Medical and Health Science, Department of Medical Laboratory Sciences, Mizan-Tepi University, PO Box 260, Mizan-Aman, Ethiopia.
| | - Ahmed Zeynudin
- School of Medical Laboratory Sciences, Faculty of Health Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Rahel Tamrat
- School of Medical Laboratory Sciences, Faculty of Health Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Mulualem Tadesse
- School of Medical Laboratory Sciences, Faculty of Health Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Abraham Tamirat
- Faculity of Public Health, Department of Health, Behavior and Society, Jimma University, Jimma, Ethiopia
| |
Collapse
|
6
|
Devi P, Singh K, Kumar B, Kumari Singh J. Synthesis, spectroscopic, antimicrobial and in vitro anticancer activity of Co+2, Ni+2, Cu+2 and Zn+2 metal complexes with novel Schiff base. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
7
|
Wright JR, Ly TT, Cromwell KB, Brislawn CJ, Chen See JR, Anderson SLC, Pellegrino J, Peachey L, Walls CY, Lloyd CM, Jones OY, Lawrence MW, Bess JA, Wall AC, Shope AJ, Lamendella R. Assessment of a novel continuous cleaning device using metatranscriptomics in diverse hospital environments. FRONTIERS IN MEDICAL TECHNOLOGY 2023; 5:1015507. [PMID: 36935775 PMCID: PMC10020724 DOI: 10.3389/fmedt.2023.1015507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/17/2023] [Indexed: 03/06/2023] Open
Abstract
Introduction Despite routine implementation of cleaning and disinfection practices in clinical healthcare settings, high-touch environmental surfaces and contaminated equipment often serve as reservoirs for the transmission of pathogens associated with healthcare-associated infections (HAIs). Methods The current study involved the analysis of high-touch surface swabs using a metatranscriptomic sequencing workflow (CSI-Dx™) to assess the efficacy of cleanSURFACES® technology in decreasing microbial burden by limiting re-contamination. This is a non-human single center study conducted in the Emergency Department (ED) and on an inpatient Oncology Ward of Walter Reed National Military Medical Center that have followed hygienic practices during the COVID-19 pandemic environment. Results Although there was no difference in observed microbial richness (two-tailed Wilcoxon test with Holm correction, P > 0.05), beta diversity findings identified shifts in microbial community structure between surfaces from baseline and post-intervention timepoints (Day 1, Day 7, Day 14, and Day 28). Biomarker and regression analyses identified significant reductions in annotated transcripts for various clinically relevant microorganisms' post-intervention, coagulase-negative staphylococci and Malassezia restricta, at ED and Oncology ward, respectively. Additionally, post-intervention samples predominantly consisted of Proteobacteria and to a lesser extent skin commensals and endogenous environmental microorganisms in both departments. Discussion Findings support the value of cleanSURFACES®, when coupled with routine disinfection practices, to effectively impact on the composition of active microbial communities found on high-touch surfaces in two different patient care areas of the hospital (one outpatient and one inpatient) with unique demands and patient-centered practices.
Collapse
Affiliation(s)
- Justin R Wright
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Truc T Ly
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Karen B Cromwell
- Walter Reed National Military Medical Center, Bethesda, MD, United States
| | - Colin J Brislawn
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Jeremy R Chen See
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | | | - Jordan Pellegrino
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Logan Peachey
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Christine Y Walls
- Contamination Source Identification, LLC., Huntingdon, PA, United States
| | - Charise M Lloyd
- Walter Reed National Military Medical Center, Bethesda, MD, United States
| | - Olcay Y Jones
- Walter Reed National Military Medical Center, Bethesda, MD, United States
| | - Matthew W Lawrence
- Walter Reed National Military Medical Center, Bethesda, MD, United States
| | | | | | - Alexander J Shope
- Contamination Source Identification, LLC., Huntingdon, PA, United States
- AIONX, Hershey, PA, United States
| | - Regina Lamendella
- Contamination Source Identification, LLC., Huntingdon, PA, United States
- Correspondence: Regina Lamendella
| |
Collapse
|
8
|
Bakht M, Alizadeh SA, Rahimi S, Kazemzadeh Anari R, Rostamani M, Javadi A, Peymani A, Marashi SMA, Nikkhahi F. Phenotype and genetic determination of resistance to common disinfectants among biofilm-producing and non-producing Pseudomonas aeruginosa strains from clinical specimens in Iran. BMC Microbiol 2022; 22:124. [PMID: 35525944 PMCID: PMC9078005 DOI: 10.1186/s12866-022-02524-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 04/11/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is a common pathogen in Hospitalized patients, and its various resistance mechanisms contribute to patient morbidity and mortality. The main aims of the present study were to assess the susceptibility of biofilm-producing and non-producing P. aeruginosa isolates to the five commonly used Hospital disinfectants, to evaluate the synergistic effect of selected disinfectants and Ethylene-diamine-tetra acetic acid (EDTA), and the effect of exposure to sub-inhibitory concentrations of Sodium hypochlorite on antimicrobial susceptibility test. RESULTS The results showed that sodium hypochlorite 5% and Ethanol 70% were the most and least effective disinfectants against P. aeruginosa, respectively. The addition of EDTA significantly increased the effectiveness of the selected disinfectants. The changes in the antibiotic-resistance profiles after exposure to sub-inhibitory concentrations of disinfectants were observed for different classes of antibiotics (Carbapenems, Aminoglycosides, Cephalosporins, Fluoroquinolones). As well as near the all isolates harbored efflux pump genes and 117 (97.5%) of isolates produced biofilm. CONCLUSION In the current study, the mixture of disinfectant and EDTA were the most suitable selection to disinfect Hospital surfaces and instruments. Also, it was clear that exposure to sub-inhibitory concentrations of Sodium hypochlorite results in resistance to some antibiotics in P. aeruginosa species. Strong and intermediate biofilm formers belonged to MDR/XDR strains. Future studies should include more complex microbial communities residing in the Hospitals, and more disinfectants use in Hospitals.
Collapse
Affiliation(s)
- Mehdi Bakht
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Safar Ali Alizadeh
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sara Rahimi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Raana Kazemzadeh Anari
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mohammad Rostamani
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amir Javadi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Department of Community Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amir Peymani
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | | | - Farhad Nikkhahi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
| |
Collapse
|
9
|
Bacterial profile and antimicrobial susceptibility patterns in cancer patients. PLoS One 2022; 17:e0266919. [PMID: 35427384 PMCID: PMC9012398 DOI: 10.1371/journal.pone.0266919] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/29/2022] [Indexed: 12/25/2022] Open
Abstract
Background Bloodstream infections have been the leading complications in cancer patients because they are at high risk for antibiotic-resistant bacterial infections. There is increasing evidence from different parts of the world of the high prevalence of antimicrobial-resistant bacterial strains in cancer patients. The burden of the infection is high in developing countries, especially in Ethiopia. Data on bacterial profile and antimicrobial susceptibility patterns among cancer patients in Ethiopia is limited. Thus, this study aimed to determine the predominant bacterial species causing bacteremia and their antibiotic resistance pattern among cancer patients at University of Gondar comprehensive specialized hospital. Methods A hospital-based, cross-sectional study was conducted on 200 study participants from March to July 2021. All cancer patients who developed a fever at the time of hospital visit were included in this study, and their socio-demographic and clinical data were collected using a structured questionnaire. Blood samples (10 mL for adults and 4 mL for children) were collected from each patient, and the collected blood samples were transferred into sterile tryptic soy broth, then incubated at 37°C for 7 days. Tryptic soy broth which showed signs of growth were Gram-stained and sub-cultured on blood agar, chocolate agar, MacConkey agar, and mannitol salt agar. The inoculated plates were then aerobically incubated at 37°C for 18–24 hours and the isolates obtained were identified using standard microbiological methods. Antimicrobial susceptibility tests were done using a modified Kirby-Bauer disk diffusion technique following CLSI 2021 guidelines. Data were entered using EPI data version 4.6 and analyzed with SPSS version 20. Results In this study, out of 200 cancer patients included and 67.5% (135/200) of them were males. The majorities of study participants, 56% (113/200) of cancer patients were pediatrics and 26.5% (53/200) of them belong under five years of age. Out of 200 patient samples that had undergone culture, 27% (54/200) samples had bacterial growth. Gram-positive bacterial isolates were predominant, 61.1%, and S. aureus was the predominant Gram-positive isolate, (51.5.6%), followed by coagulase-negative staphylococci (48.5%). Moreover, K. pneumoniae (47%) and P. aeruginosa (29.5%) were the most common Gram-negative bacterial isolates. Among patients who had BSIs, the highest prevalence of BSIs was observed among males (66.7%), and in pediatrics cancer patients (44.2%). Pediatric study participants were more venerable to bloodstream infection (P = 0.000) compared to adult participants. Meropenem (100%), amikacin (100%), piperacillin/tazobactam (72.3%), and ceftazidime (73.5%) were effective against for Gram-negative isolates while cefoxitin (81.2%) and penicillin (70.5%) were effective for Gram-positive isolates. Additionally, most Gram-negative and Gram-positive bacterial isolates were sensitive for gentamycin (75.9%). Multidrug resistance was seen among 17.1% bacterial isolates, and MDR in Gram-negative and Gram-positive bacteria were 83.3% and 16.7%, respectively. Gram-negative bacterial isolates showed a high prevalence of MDR than Gram-positive isolates. Conclusions and recommendation BSI’s remains an important health problem in cancer patients, and Gram-positive bacteria were more common as etiologic agents of BSIs in cancer patients. S. aureus was the dominant bacteria followed by CoNS, K. pneumoniae, and P. aeruginosa. Multidrug-resistant isolates found in cancer patients and routine bacterial surveillance and study of their resistance patterns may guide successful antimicrobial therapy and improve the quality of care. Therefore, strict regulation of antibiotic stewardship and infection control programs should be considered in the study area.
Collapse
|