Emerging Microbial-Resistant Pathogens: Updates on Clinical, Epidemiological, and Molecular Perspectives

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Medical Microbiology".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 2063

Special Issue Editors


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Guest Editor
Faculty of Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
Interests: hematology and oncology; microbe-induced carcinogenesis; cancer drug discovery; parasitic infections; opportunistic microorganisms; immunology; microbiota; infectious diseases; artificial intelligence and medical sciences
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Guest Editor
Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Wilayah Persekutuan Kuala Lumpur 50603, Malaysia
Interests: infectious diseases; antimicrobial resistance; molecular diagnostic; genomics; transcriptomics; metabolomics

Special Issue Information

Dear Colleagues,

The discovery of antimicrobials constitutes one of the most significant medical achievements of modern medicine; however, since the first decades of antibiotic introduction in clinical practice, microbes capable of evading clinically available antimicrobials have emerged, and currently, the development of antimicrobial resistance represents a serious threat to global health. Antimicrobial resistance is associated with higher medical costs, prolonged hospital stays, and increased mortality, and although this phenomenon can occur naturally, the inappropriate use of antimicrobials in humans and animals is a major factor that contributes to accelerating and aggravating the problem. Over the last few years, new resistance mechanisms have emerged, and the list of problematic antimicrobial-resistant microorganisms (AMRO) and multidrug-resistant organisms (MDRO) is growing. Especially concerning pathogens such as Clostridioides difficile (C. difficile), methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci (VRE), extended-spectrum β-lactamase (ESBLs) producing Gram-negative bacteria, carbapenem-resistant enterobacteriaceae (CRE), antimicrobial-resistant fungi (AMRF), multidrug-resistant tuberculosis (MDR-TB), and more recently, Candida auris are spreading worldwide and are increasingly detected in both the healthcare setting and in the community setting.

This Special Issue aims to expand the current knowledge about microbial-resistant pathogens (including MDRO, C. difficile, MRSA, VRE, ESBLs, and CRE). Suitable topics include epidemiological, clinical, and molecular studies (genomics, epigenomics, transcriptomics, and proteomics), as well as studies encompassing diagnosis, epidemiology, pathology, immunology, therapy, and monitoring. We encourage experts to discuss their experiences and results involving experimental studies using in vitro and in vivo models, including patient-derived xenograft animal models, as well as review articles.

Dr. Jorge Luis Espinoza
Dr. Cindy Shuan Ju Teh
Guest Editors

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Keywords

  • antibiotic-resistant bacteria (ARB)
  • multidrug-resistant organisms (MDRO)
  • methicillin-resistant Staphylococcus aureus (MRSA)
  • vancomycin-resistant enterococci (VRE)
  • extended-spectrum β-lactamase (ESBLs) producing Gram-negative bacteria
  • carbapenem-resistant enterobacteriaceae (CRE)
  • extensively drug-resistant (XDR)
  • pan drug-resistant bacteria
  • Candida auris

Published Papers (1 paper)

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Research

17 pages, 3473 KiB  
Article
The Prevalence, Epidemiological, and Molecular Characterization of Methicillin-Resistant Staphylococcus aureus (MRSA) in Macau (2017–2022)
by Abao Xing, Hoi Man Ng, Huining Jiao, Kefeng Li and Qianhong Ye
Microorganisms 2024, 12(1), 148; https://doi.org/10.3390/microorganisms12010148 - 12 Jan 2024
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Abstract
Macau, recognized as a global tourism hub and the world’s most densely populated region, provides a unique environment conducive to methicillin-resistant Staphylococcus aureus (MRSA) transmission in healthcare and community settings, posing a significant public health concern both locally and globally. The epidemiology and [...] Read more.
Macau, recognized as a global tourism hub and the world’s most densely populated region, provides a unique environment conducive to methicillin-resistant Staphylococcus aureus (MRSA) transmission in healthcare and community settings, posing a significant public health concern both locally and globally. The epidemiology and molecular characteristics of MRSA in the distinct city of Macau remain largely unelucidated. This five-year longitudinal study (2017–2022) examined the local prevalence and molecular typing of MRSA in Macau, with future MRSA type distribution predicted through ARIMA modeling. We subsequently analyzed the epidemiological characteristics of MRSA, including specimen source, clinical department, collection year, season, patient age, sex, and the annual number of tourists. Comprehensive antibiotic resistance profiles of the strains were also assessed. Of 504 clinically isolated S. aureus strains, 183 (36.3%) were identified as MRSA by the cefoxitin disk diffusion method and validated through multi-locus sequence typing (MLST). The MRSA detection rate showed an upward trend, increasing from 30.1% in 2017 to 45.7% in 2022. SCCmec type IV was predominant (28.9%), followed by types II (25.4%), III (22.1%), and V (22.1%). The primary sources of MRSA isolates were sputum (39.2%) and secretions (25.6%). Older age emerged as a risk factor for MRSA infection, whereas no significant associations were found with seasonal variations, gender, or the annual number of tourists. Despite displaying universal resistance to cefoxitin, oxacillin, and benzylpenicillin, MRSA isolates in Macau remained fully sensitive to vancomycin, tigecycline, quinupristin, nitrofurantoin, and linezolid. Continuous surveillance and analysis of MRSA distribution in Macau could provide invaluable insights for the effective management of MRSA prevention and control measures within healthcare settings. Full article
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