ijms-logo

Journal Browser

Journal Browser

Innovative Antimicrobial Therapies: Overcoming Virulence of Microorganisms and Drug Resistance

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Microbiology".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 1991

Special Issue Editor


E-Mail Website
Guest Editor
Department of Medical Microbiology, Medical University of Warsaw, 5 Chalubinski Str., 02-004 Warsaw, Poland
Interests: anaerobic bacteria; anti-infective agents; biofilm; pathobionts; virulence factors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Microorganisms interact with the human body in a variety of ways: they can be commensals, mutualists, or absolute pathogens. Infectious disease is the result of the virulence of the microorganism, the condition of the host, and the presence of various favourable environmental factors. Understanding complex host–microbe and microbe–microbe interactions can help us to identify the specific role of microorganisms in human health and disease and allows for targeted interventions. Antibiotics, antivirals, antifungals, and antiparasitic drugs are now widely used to prevent and treat human infections. The price of widespread access to anti-infectives is the development of antimicrobial resistance (AMR). AMR is one of the top 10 threats to global health. Resistant and multi-drug resistant pathogens are a major public health problem, leading to increased mortality and morbidity.

New treatment strategies and a new generation of therapies are urgently needed. Drugs with unique chemical structures, new mechanisms of action and high barriers to resistance can be an answer to the multi-faceted global challenge of AMR, also known as the “silent pandemic”.

Dr. Anna Majewska
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • antibiotics
  • antimicrobial resistance
  • antivirals
  • commensal
  • pathogenesis
  • virulence

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

12 pages, 1096 KiB  
Article
Could the Adoptive Transfer of Memory Lymphocytes be an Alternative Treatment for Acinetobacter baumannii Infections?
by Tania Cebrero-Cangueiro, Soraya Herrera-Espejo, María Paniagua, Gema Labrador-Herrera, José Miguel Cisneros, Jerónimo Pachón and María Eugenia Pachón-Ibáñez
Int. J. Mol. Sci. 2024, 25(19), 10550; https://doi.org/10.3390/ijms251910550 - 30 Sep 2024
Viewed by 693
Abstract
We evaluated the efficacy of the adoptive transfer of memory B, CD4+, and CD8+ T lymphocytes compared with sulbactam and tigecycline in an experimental murine pneumonia model by two multidrug-resistant Acinetobacter baumannii strains, colistin-susceptible AbCS01 and colistin-resistant AbCR17. Pharmacodynamically optimized antimicrobial dosages were [...] Read more.
We evaluated the efficacy of the adoptive transfer of memory B, CD4+, and CD8+ T lymphocytes compared with sulbactam and tigecycline in an experimental murine pneumonia model by two multidrug-resistant Acinetobacter baumannii strains, colistin-susceptible AbCS01 and colistin-resistant AbCR17. Pharmacodynamically optimized antimicrobial dosages were administered for 72 h, and intravenous administration of 2 × 106 of each of the memory cells in a single dose 30 min post-infection. Bacterial lung and blood counts and mortality rates were analyzed. Results showed that a single dose of memory B or CD4+ T cells was as effective as sulbactam in terms of bacterial clearance from the lungs and blood compared with the untreated mice or the tigecycline-treated mice inoculated with the AbCS01 strain. In the pneumonia model by AbCR17, a single dose of memory B or CD4+ T cells also reduced the bacterial load in the lungs compared with both antibiotic groups and was more efficacious than tigecycline in terms of blood clearance. Regarding survival, the adoptive transfer of memory B or CD4+ T cells was as effective as three days of sulbactam treatment for both strains. These data suggest that adoptive memory cell transfer could be a new effective treatment of multidrug-resistant A. baumannii infections. Full article
Show Figures

Figure 1

9 pages, 932 KiB  
Communication
Antimicrobial Susceptibility and Genetic Epidemiology of Extended-Spectrum β-Lactamase-Positive Enterobacterales Clinical Isolates in Central Poland
by Małgorzata Brauncajs, Filip Bielec, Anna Macieja, Piotr Machnicki and Dorota Pastuszak-Lewandoska
Int. J. Mol. Sci. 2024, 25(15), 8371; https://doi.org/10.3390/ijms25158371 - 31 Jul 2024
Viewed by 780
Abstract
The extended-spectrum β-lactamases (ESβLs) are bacterial enzymes capable of hydrolyzing penicillins, cephalosporins, and aztreonam. The prevalence of ESβL is increasing among clinically significant microorganisms worldwide, drastically reducing the therapeutic management of infectious diseases. The study aimed to determine the drug susceptibility of ESβL-positive [...] Read more.
The extended-spectrum β-lactamases (ESβLs) are bacterial enzymes capable of hydrolyzing penicillins, cephalosporins, and aztreonam. The prevalence of ESβL is increasing among clinically significant microorganisms worldwide, drastically reducing the therapeutic management of infectious diseases. The study aimed to determine the drug susceptibility of ESβL-positive clinical isolates acquired from patients hospitalized in Lodz, central Poland, and analyze the prevalence of specific genes, determining acquired resistance in these bacteria. The samples of ESβL-positive clinical isolates were gathered in 2022 from medical microbiological laboratories in the city of Lodz, central Poland. The strains were subjected to biochemical identification and antimicrobial susceptibility testing following EUCAST guidelines. The presence of studied genes (blaCTX-M, blaSHV, blaTEM, blaPER, blaVEB) was confirmed by PCR. Over 50% of studied isolates were resistant to gentamicin, cefepime, ceftazidime and ciprofloxacin. The most common ESβL gene was blaCTX-M. In most isolates, the resistance genes occurred simultaneously. The blaPER was not detected in any of the tested strains. ESβL-producing strains are largely susceptible to the currently available antibiotics. The observation of the coexistence of different genes in most clinical isolates is alarming. Full article
Show Figures

Figure 1

Back to TopTop