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Related Experiment Video

Updated: Jun 24, 2026

Separation of the Cell Envelope for Gram-negative Bacteria into Inner and Outer Membrane Fractions with Technical Adjustments for Acinetobacter baumannii

Separation of the Cell Envelope for Gram-negative Bacteria into Inner and Outer Membrane Fractions with Technical Adjustments for Acinetobacter baumannii

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Isolation of Acinetobacter spp. including A. baumannii from vegetables: implications for hospital-acquired

J Berlau¹, H M Aucken, E Houang

¹Laboratory of Hospital Infection, Central Public Health Laboratory, London, United Kingdom.

The Journal of Hospital Infection

|August 10, 1999

Summary

This summary is machine-generated.

Vegetables may harbor Acinetobacter baumannii, a significant nosocomial pathogen. This study found Acinetobacter in vegetables, suggesting they could be a natural reservoir and a source of hospital-acquired infections.

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Characterizing Multidrug Efflux Systems in Acinetobacter baumannii Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System

Characterizing Multidrug Efflux Systems in Acinetobacter baumannii Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System

Published on: January 5, 2024

Area of Science:

Microbiology
Environmental Science
Infectious Diseases

Background:

Acinetobacter baumannii is a major cause of hospital-acquired infections.
The natural reservoir and environmental sources of A. baumannii remain largely unknown.
Understanding environmental reservoirs is crucial for controlling nosocomial infections.

Purpose of the Study:

To investigate vegetables as a potential natural reservoir for Acinetobacter species.
To determine the prevalence and genospecies distribution of Acinetobacter in vegetables.
To assess the antibiotic resistance profiles of Acinetobacter strains isolated from vegetables.

Main Methods:

Selective culturing techniques were used to isolate Acinetobacter species from 177 vegetable samples.
Amplified ribosomal DNA restriction analysis (ARDRA) was employed for genospecies classification.
Minimum Inhibitory Concentration (MIC) assays were performed to evaluate antibiotic resistance.

Main Results:

Acinetobacter was isolated from 30 out of 177 (16.9%) vegetable samples.
Genospecies 2 and 11 were the most frequently identified, each comprising 27% of the isolates.
Strains belonging to the Acinetobacter calcoaceticus-A. baumannii complex (genospecies 1, 2, 3, and 13TU) exhibited significant resistance to ciprofloxacin and gentamicin.

Conclusions:

Vegetables can serve as a natural habitat for Acinetobacter species, including potential A. baumannii strains.
The presence of antibiotic-resistant Acinetobacter in vegetables poses a potential risk for hospital-acquired infections.
Findings have implications for infection control strategies in healthcare settings, highlighting the importance of food safety.