Álvaro San Millán

This study shows that IncI1-blaCTX-M-1 plasmids transfer efficiently between chicken and human E. coli but are less stable in human hosts, limiting their spread.

The paper characterizes a collection of 50 multidrug-resistant clinical isolates of Escherichia coli and Klebsiella spp., providing genomic insights into antimicrobial resistance and mobile genetic elements.

This study shows plasmids contribute to antimicrobial resistance by promoting gene inactivation via insertion sequences in Klebsiella pneumoniae.

This study measures the fitness effects of 136 antimicrobial resistance genes in changing environments and finds that oxygen availability modulates their cost.

This paper develops conjugative plasmids that block antibiotic resistance plasmid spread by combining metabolic enhancement and plasmid spread mechanisms in microbial communities.

This study investigates the role of NucS-mediated non-canonical mismatch repair in Mycobacterium tuberculosis and finds it does not significantly affect resistance to key antibiotics.

This study investigates how oxygen levels affect antimicrobial resistance gene performance in Enterobacterales, showing significant variations in resistance under aerobic and anaerobic conditions.

This study uses CRISPRi screens to analyze fitness effects of the pOXA-48 plasmid in clinical enterobacteria, identifying key genes and mechanisms affecting plasmid stability and transmission.

The paper investigates plasmid-chromosome transcriptional interactions in multidrug-resistant bacteria, finding that a plasmid-encoded regulator drives chromosomal operon overexpression, enhancing bacterial fitness and carbapenem resistance dissemination.

The paper deletes a chromosomal integron in Vibrio cholerae and shows it has no detectable effect on physiology, proving its genetic and functional isolation.

This study shows plasmid-encoded insertion sequences (IS1) enhance bacterial adaptation by increasing gene inactivation rates in clinical enterobacteria.

This study shows that β-lactamase expression in E. coli induces collateral sensitivity to colistin and azithromycin, suggesting a therapeutic strategy to counter mobile AMR.

The paper identifies promoter activity in gene-less cassettes from Vibrio superintegrons, showing they enhance downstream cassette expression and confer antibiotic resistance.