The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 958, P. 177785 - 177785
Published: Dec. 6, 2024
Language: Английский
Clinical Case Reports, Journal Year: 2025, Volume and Issue: 13(2)
Published: Jan. 26, 2025
ABSTRACT Aeromonas hydrophila ( A. ), a Gram‐negative bacterium commonly found in aquatic environments, has the capacity to be transmitted humans through consumption of contaminated fish, water, or seafood. In this study, we present case report concerning 77‐year‐old female patient who experienced an acute exacerbation chronic heart failure, subsequently developing severe septic shock due necrotizing fasciitis caused by . Infections are more prevalent during warmer months, particularly regions characterized dense aquaculture presence natural water bodies. The excessive use antibiotics contributed emergence antibiotic‐resistant strains. proliferation multidrug‐resistant presents significant challenge for clinicians. context atypical bacterial infections, initial empiric therapy typically involves third‐generation cephalosporins conjunction with quinolone antibiotics. case, patient's successful recovery was achieved administration combination cefoperazone/sulbactam and levofloxacin, as determined sensitivity testing. This study underscores critical importance considering infection patients fasciitis.
Language: Английский
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Animals, Journal Year: 2025, Volume and Issue: 15(7), P. 948 - 948
Published: March 26, 2025
The Gram-negative genus Aeromonas contains diverse bacterial species that are prevalent in aquatic environments. This present study describes three novel strains: A. ichthyocola sp. nov. A-5T and mytilicola subsp. aquatica A-8T isolated from rainbow trout (Oncorhynchus mykiss), A-7T mussels (Mytilus galloprovincialis), respectively. Genomic analyses revealed strains shared the highest 16S rRNA gene sequence similarity with rivipollensis P2G1T (99.7% 99.8%, respectively), while strain exhibited 99.7% identity media RMT. Together morphological, physiological, biochemical data, genome-based provided additional evidence for differentiation. Digital DNA-DNA hybridization (dDDH; 56.8-65.9%) average nucleotide (ANI; 94.2-95.7%) values fell below delineation thresholds, confirming these isolates represent distinct taxa. Pathogenicity assays using greater wax moth (Galleria mellonella) larvae demonstrated strain-specific virulence profiles. Further genomic identified biosynthetic clusters nonribosomal peptides (NRPs) ribosomally synthesized post-translationally modified (RiPPs), which often have roles secondary metabolite production. Ecological analyses, based on comparisons metagenomic database searches, adaptability of to habitats, including freshwater, wastewater, activated sludge. Based genetic phenotypic taxa A-5ᵀ (LMG 33534ᵀ = DSM 117488ᵀ), A-7ᵀ 33536ᵀ 117490ᵀ), A-8ᵀ 33537ᵀ 117493ᵀ) proposed.
Language: Английский
Citations
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Aquaculture, Journal Year: 2025, Volume and Issue: unknown, P. 742483 - 742483
Published: March 1, 2025
Language: Английский
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Fishes, Journal Year: 2025, Volume and Issue: 10(5), P. 204 - 204
Published: May 1, 2025
The tilapia (Oreochromis) aquaculture industry in Malaysia has expanded rapidly to meet the increasing demand for animal protein. However, this growth is challenged by microbial infections, particularly those caused emerging pathogen Aeromonas dhakensis. This study aimed investigate community composition across four distinct farming systems and assess associated water physicochemical parameters, with a focus on detecting presence of A. dhakensis elucidating its environmental associations. Water parameters were measured evaluate conditions, communities characterized through 16S rDNA metabarcoding, was detected using both microbiological molecular approaches. Principal component analysis (PCA) canonical correspondence (CCA) employed explore influence variables dynamics occurrence. Our results indicated that floating cages exhibited higher levels temperature, ammonium, fecal coliform, while cement tanks showed signs nutrient accumulation. PCA revealed degraded quality. A total 45 strains fingerprints isolated. metabarcoding Proteobacteria, Actinobacteria, Planctomycetota as dominant phyla. Alpha diversity did not differ significantly among pond systems, beta variations assemblages systems. CCA identified dissolved oxygen, macronutrients (phosphate, nitrate, nitrite), turbidity significant drivers shaping structure In conclusion, highlights importance factors, levels, potentially influencing pathogenic bacteria such These findings underscore need improved management mitigate disease risks support fish health.
Language: Английский
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Microbial Pathogenesis, Journal Year: 2024, Volume and Issue: 194, P. 106817 - 106817
Published: July 20, 2024
Language: Английский
Citations
0
The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 958, P. 177785 - 177785
Published: Dec. 6, 2024
Language: Английский
Citations
0