Resistance carrying plasmid in a traumatic wound

Area of Science:

• Microbiology
• Molecular Biology
• Genetics

Background:

• Antibiotic resistance is a growing global health concern.
• Understanding the mechanisms and reservoirs of antibiotic resistance is crucial for combating its spread.

Observation:

• A complex wound sample yielded a multi-drug resistant Enterobacter species.
• This isolate exhibited resistance to ampicillin, kanamycin, and several other antibiotics.
• Genetic analysis confirmed the presence of a plasmid carrying antibiotic resistance genes.

Findings:

• The Enterobacter isolate was identified via biochemical profiling and 16S rDNA sequencing.
• Plasmid transfer experiments demonstrated that ampicillin and kanamycin resistance were plasmid-borne.
• E. coli transformants showed distinct resistance patterns and plasmid restriction profiles.

Implications:

• The human microbiome may serve as a reservoir for antibiotic resistance genes.
• The spread of resistance plasmids from commensal bacteria can contribute to the emergence of resistant pathogens.
• This underscores the need for strategies to prevent the dissemination of antibiotic resistance from the normal flora.