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Victor J. Torres

@torreslab.bsky.social
2.4K followers 181 following 25 posts

Scientist fascinated by infectious diseases, host-microbe interactions and bacterial infections. Views my own 🇵🇷 #CienciaBoricua #MacFellow #MRSA

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Victor J. Torres @torreslab.bsky.social · 22/02/2025
7/8 We hypothesized porins may not be critical during infection of an immunocompromised host (the common victim of Enterobacter infections). Indeed, porin mutants were able to cause lethal infection in a neutropenic mouse model, and in an ex vivo model of human bacteremia.
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Victor J. Torres @torreslab.bsky.social · 22/02/2025
6/8 However, porin loss did promote carbapenem resistance in the ST78 isolates, an important phenomenon in multidrug-resistant Gram-negatives.
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Victor J. Torres @torreslab.bsky.social · 22/02/2025
5/8 Deletion of these porin genes in two otherwise virulent isolates rendered the isolates avirulent.
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Victor J. Torres @torreslab.bsky.social · 22/02/2025
4/8 These analyses suggested loss-of-function mutations in two porin-encoding genes may be the culprit.
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Victor J. Torres @torreslab.bsky.social · 22/02/2025
3/8 In a mouse model of infection, only E. hormaechei sequence type 78 (ST78) caused lethal infection. In a cluster of closely related ST78 isolates, we identified an avirulent outlier that we used for comparative genomics.
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