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Microorganisms
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Sepsis: Underlying Mechanisms, Pathogen-Host Interactions, Precision Diagnostic, Therapeutic Approaches, and...
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Sepsis: Underlying Mechanisms, Pathogen-Host Interactions, Precision Diagnostic, Therapeutic Approaches, and Supportive Management

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

Deadline for manuscript submissions: closed (31 October 2024) | Viewed by 1638

Special Issue Editor

Dr. Kenneth Remy

E-Mail Website
Guest Editor
1. Department of Pediatrics, Case Western University School of Medicine, Rainbow Babies and Children's Hospital, Cleveland, OH, USA
2. Department of Medicine, Case Western University School of Medicine, University Hospitals of Cleveland, Cleveland, OH, USA
Interests: hematology; immunology; sepsis

Special Issue Information

Dear Colleagues,

Sepsis, a life-threatening condition triggered by an overwhelming immune response to infection, remains the leading cause of death in hospitalized patients and continues to present a significant global health challenge. The understanding of the basic mechanisms has also progressively evolved. Starting from the search for factors related to the causative microorganism and host, it has been recognized that the components related to sepsis include the pathogen, the immune system, the endothelia and microcirculation, blood coagulation, and the nervous system with microglia and neurons.

The current focus remains on gaining insight into underlying disease mechanisms and providing new diagnostics for early detection of patients with sepsis. Therefore, I invite all investigators working on sepsis to contribute with original papers or a literature review related to this topic.

We encourage contributions on a wide range of topics, including, but not limited to:

  • Interactions between host and sepsis;
  • Immune response dysregulation in sepsis: unraveling the mechanisms;
  • Novel pathophysiological pathways: bridging the gap between bench and bedside;
  • Sepsis biomarkers: advancements and clinical applications;
  • Antibiotic stewardship;
  • Distinct subtypes of sepsis: implications for personalized treatment;
  • Clinical trials in sepsis: paving the way for evidence-based interventions.

Dr. Kenneth Remy
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. Microorganisms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). 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

  • sepsis
  • hematology
  • immunology
  • personalized treatment
  • pathophysiology

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Published Papers (1 paper)

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Research

19 pages, 7972 KiB  
Article
Rapid Classification and Differentiation of Sepsis-Related Pathogens Using FT-IR Spectroscopy
by Shwan Ahmed, Jawaher Albahri, Sahand Shams, Silvana Sosa-Portugal, Cassio Lima, Yun Xu, Rachel McGalliard, Trevor Jones, Christopher M. Parry, Dorina Timofte, Enitan D. Carrol, Howbeer Muhamadali and Royston Goodacre
Microorganisms 2024, 12(7), 1415; https://doi.org/10.3390/microorganisms12071415 - 12 Jul 2024
Viewed by 1168
Abstract
Sepsis is a life-threatening condition arising from a dysregulated host immune response to infection, leading to a substantial global health burden. The accurate identification of bacterial pathogens in sepsis is essential for guiding effective antimicrobial therapy and optimising patient outcomes. Traditional culture-based bacterial [...] Read more.
Sepsis is a life-threatening condition arising from a dysregulated host immune response to infection, leading to a substantial global health burden. The accurate identification of bacterial pathogens in sepsis is essential for guiding effective antimicrobial therapy and optimising patient outcomes. Traditional culture-based bacterial typing methods present inherent limitations, necessitating the exploration of alternative diagnostic approaches. This study reports the successful application of Fourier-transform infrared (FT-IR) spectroscopy in combination with chemometrics as a potent tool for the classification and discrimination of microbial species and strains, primarily sourced from individuals with invasive infections. These samples were obtained from various children with suspected sepsis infections with bacteria and fungi originating at different sites. We conducted a comprehensive analysis utilising 212 isolates from 14 distinct genera, comprising 202 bacterial and 10 fungal isolates. With the spectral analysis taking several weeks, we present the incorporation of quality control samples to mitigate potential variations that may arise between different sample plates, especially when dealing with a large sample size. The results demonstrated a remarkable consistency in clustering patterns among 14 genera when subjected to principal component analysis (PCA). Particularly, Candida, a fungal genus, was distinctly recovered away from bacterial samples. Principal component discriminant function analysis (PC-DFA) allowed for distinct discrimination between different bacterial groups, particularly Gram-negative and Gram-positive bacteria. Clear differentiation was also observed between coagulase-negative staphylococci (CNS) and Staphylococcus aureus isolates, while methicillin-resistant S. aureus (MRSA) was also separated from methicillin-susceptible S. aureus (MSSA) isolates. Furthermore, highly accurate discrimination was achieved between Enterococcus and vancomycin-resistant enterococci isolates with 98.4% accuracy using partial least squares-discriminant analysis. The study also demonstrates the specificity of FT-IR, as it effectively discriminates between individual isolates of Streptococcus and Candida at their respective species levels. The findings of this study establish a strong groundwork for the broader implementation of FT-IR and chemometrics in clinical and microbiological applications. The potential of these techniques for enhanced microbial classification holds significant promise in the diagnosis and management of invasive bacterial infections, thereby contributing to improved patient outcomes. Full article
(This article belongs to the Special Issue Sepsis: Underlying Mechanisms, Pathogen-Host Interactions, Precision Diagnostic, Therapeutic Approaches, and Supportive Management)
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