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Clinical Relevance of Psychrobacter Sanguinis: Occurrence and Characterization as an Emerging Pathogen in Patients with Sepsis and Pneumonia Cover

Clinical Relevance of Psychrobacter Sanguinis: Occurrence and Characterization as an Emerging Pathogen in Patients with Sepsis and Pneumonia

Open Access
|Dec 2025

Figures & Tables

Fig. 1.

Microscopic morphology of P. sanguinis (Gram stain, x1000) (ECLIPSE E200 optical microscope, Nikon Instruments Inc., Melville, NY, USA).
Microscopic morphology of P. sanguinis (Gram stain, x1000) (ECLIPSE E200 optical microscope, Nikon Instruments Inc., Melville, NY, USA).

Fig. 2.

Morphology of Psychrobacter sanguinis colonies on Colombia agar with 5% horse blood (Oxoid Ltd., Hampshire, United Kingdom) (A) and MacConkey agar (Oxoid Ltd., Hampshire, United Kingdom) (B) after incubation by 18±2 hours in aerobic condition at 35°C.
Morphology of Psychrobacter sanguinis colonies on Colombia agar with 5% horse blood (Oxoid Ltd., Hampshire, United Kingdom) (A) and MacConkey agar (Oxoid Ltd., Hampshire, United Kingdom) (B) after incubation by 18±2 hours in aerobic condition at 35°C.

BLAST results for consensus sequences obtained in this study from Psychrobacter sanguinis st rains_

StrainSequenceGenotypic species identification16S rRNA gene seq. Similarity (%)Closest relative reference strain in BLAST
PS12844Psychrobacter sanguinis strain JM50 16S ribosomal RNA gene, partial sequenceP. sanguinis100.00%MN758810.1
PS12844Psychrobacter sanguinis strain N8K9ELMT 16S ribosomal RNA gene, partial sequenceP. sanguinis100.00%MH178035.1
PS12844Psychrobacter sanguinis strain CNM637-12 16S ribosomal RNA gene, partial sequenceP. sanguinis100.00%KR232929.1
PS1051Psychrobacter sanguinis strain JM50 16S ribosomal RNA gene, partial sequenceP. sanguinis99.71%MN758810.1
PS1051Psychrobacter sanguinis strain N8K9ELMT 16S ribosomal RNA gene, partial sequenceP. sanguinis99.71%MH178035.1

Comparison of MIC values of six antimicrobial agents for PS12844 and PS1051 strains with the corresponding MIC values proposed by EUCAST for aerobic Gram-negative bacteria lacking breakpoints in standard EUCAST breakpoint tables to assess the microbiological activity of the agent against the species_

Antimicrobial agentMIC (PS12844)MIC (PS1051)MIC – values above which therapy with the agent should be discouraged
Ciprofloxacin0.0320.0320.25
Levofloxacin0.0640.0640.5
Cefotaxime0.0160.0160.5
Ceftazidime0.0640.0234
Imipenem0.0060.0042
Meropenem0.0020.0022

Characteristics of Psychrobacter sanguinis strains isolated in the District Hospital in Limanowa, named after Divine Mercy_

Strain No.Date of isolationSite of isolationUnitSex/Age
PS1284421.11.2023bloodICUaM/39
PS150128.01.2024bloodIMUaM/72
DOI: https://doi.org/10.2478/am-2025-0021 | Journal eISSN: 2545-3149 | Journal ISSN: 0079-4252
Language: English, Polish
Page range: 270 - 278
Submitted on: Oct 1, 2025
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Accepted on: Nov 27, 2025
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Published on: Dec 23, 2025
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Marianna Małek, Zofia Kowalska, Paulina Mrowiec, Joanna Wołek-Król, Marek Karpiński, Przemysław Godek, Karolina Klesiewicz, published by Polish Society of Microbiologists
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.