Bacterial Infection in Soft Tissue and Diabetic Foot

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

Deadline for manuscript submissions: 30 June 2026 | Viewed by 614

Editor

Special Issue Information

Dear Colleagues,

Bacterial infections of soft and bone tissues and the diabetic foot remain a major cause of morbidity, hospitalization, and lower-limb amputation worldwide. Their pathogenesis reflects a complex interplay of peripheral neuropathy, impaired perfusion, immune dysfunction, and breaches in skin integrity that facilitate microbial invasion. Diabetic foot infections are frequently polymicrobial, involving aerobic Gram-positive cocci (notably Staphylococcus aureus), Gram-negative bacilli, and anaerobes, with an increasing burden of multidrug-resistant organisms that complicates empiric therapy. A pivotal, often underappreciated contributor—especially in chronic ulcers—is biofilm formation: structured microbial communities embedded in an extracellular matrix that adhere to wound surfaces, limit antibiotic penetration, blunt host immune clearance, and promote persistence, delayed healing, and recurrence. Clinical presentations range from superficial cellulitis to deep abscesses, necrotizing soft tissue infection, and osteomyelitis, making rapid risk stratification and careful assessment of infection depth, vascular status, and systemic toxicity essential. Optimal management relies on timely source control (debridement and drainage), pressure off-loading, culture-directed antimicrobial therapy supported by stewardship principles, and revascularization when ischemia is present. Advances in imaging, diagnostics, and anti-biofilm strategies may further improve outcomes, but durable success still depends on coordinated multidisciplinary care and prevention to reduce ulcer formation and reinfection.

Dr. Lorenzo Drago
Guest Editor

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Keywords

  • bacterial infections
  • soft and bone tissues
  • diabetic foot
  • anti-biofilm
  • antibiotic
  • antimicrobial therapy

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Published Papers (1 paper)

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Research

14 pages, 7176 KB  
Article
Characterizing the Profiles of Gram-Negative Bacterial Pathogens of Wound Infections and Their Drug-Resistance Disposition
by Lorina Badger-Emeka
Microorganisms 2026, 14(5), 1020; https://doi.org/10.3390/microorganisms14051020 - 30 Apr 2026
Viewed by 305
Abstract
Wound infections result from contamination of compromised skin following either intentional or accidental trauma. The failure of infected wounds to heal has a huge impact on global healthcare finances. For surveillance purposes, this investigation looks at wound infections and their susceptibility to antibiotics. [...] Read more.
Wound infections result from contamination of compromised skin following either intentional or accidental trauma. The failure of infected wounds to heal has a huge impact on global healthcare finances. For surveillance purposes, this investigation looks at wound infections and their susceptibility to antibiotics. Data obtained from the microbiology laboratory for the years 2014 and 2019 included wound characteristics, patient demographics, and causative bacteria pathogen. Also retrieved from an −80° C freezer were 270 Gram-negative bacteria isolates from wounds that formed part of patient care. Vitek Compact 2 was used for bacteria IDs and AST testing. Wound swabs were the majority (74.07%), followed by bedsore samples (12.22%). Others were tissue cultures (6.3%), skin swabs (3.7%), necrotizing fasciitis (1.48%), foot swabs (1.10%), and cervical wounds (1.11%). Isolated pathogens included Pseudomonas aeruginosa (33.6%), Escherichia coli (24.78%), Acinetobacter baumannii (21.85%), Klebsiella pneumoniae (17.65%), Proteus mirabilis (1.7%), and Morganelli morganii (0.41%). Most isolates had become MDR after 5 years, with extensive (100%) resistance to β-lactam and fluoroquinolone. Only tigecycline and amikacin maintained their antimicrobial activity for the period with some bacteria species. Suitable therapeutic options were few, irrespective of the year of isolation, particularly among the ESKAPE isolates. Overall results demonstrate that after a 5-year period, about 75% of the isolates of the bacteria pathogens had become resistant to most of the antibiotics used for their management. Full article
(This article belongs to the Special Issue Bacterial Infection in Soft Tissue and Diabetic Foot)
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