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Articles 61 - 62 of 62
Full-Text Articles in Bacteriology
Characterization Of Adaptive Quorum Sensing In Pseudomonas Aeruginosa, Kayla Simanek
Characterization Of Adaptive Quorum Sensing In Pseudomonas Aeruginosa, Kayla Simanek
Electronic Theses & Dissertations (2024 - present)
Pseudomonas aeruginosa is an opportunistic pathogen that is highly antibiotic resistant and causes tens of thousands of infections each year. It persists in hospitals by forming biofilms on medical equipment like ventilators and catheters, making it difficult to eradicate. Biofilm formation, among other virulence factors of P. aeruginosa, is regulated through quorum sensing, a mechanism of bacterial communication. Quorum sensing is primarily coordinated through LuxI-R type systems comprised of an autoinducer synthase and receptor, respectively. Canonically, the first system to be expressed is LasI-R, and LasR upregulates the second arm of the quorum sensing network, the RhlI-R system. Research …
Reversible Degradation Of Peptidoglycan By Lytic Transglycosylases, Aaron Devereaux
Reversible Degradation Of Peptidoglycan By Lytic Transglycosylases, Aaron Devereaux
Theses and Dissertations (Comprehensive)
Antimicrobial resistance continues to be a burden on the global healthcare system with an estimated cost of billions of dollars and millions of deaths each year. Recently, there has been little to no development on new antibiotics to treat bacterial infection, and any that are developed become resisted to within a few years. Both Gram-positive and Gram-negative bacteria contain a mesh-like layer called peptidoglycan (PG) that surrounds their cells providing strength, cell shape, and protection from their environments. This layer is a polymer of N-acetylmuramic acid (MurNAc) and N-acetylglucosamine (GlcNAc) connected via a b-1,4-glycosidic bond, with each strand being cross-linked …