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Full-Text Articles in Medicine and Health Sciences

Regulated Proteolysis Controls Mucoid Conversion In Pseudomonas Aeruginosa, Dongru Qiu, Vonya Eisinger, Donald Rowen, Hongwei Yu Aug 2012

Regulated Proteolysis Controls Mucoid Conversion In Pseudomonas Aeruginosa, Dongru Qiu, Vonya Eisinger, Donald Rowen, Hongwei Yu

Hongwei Yu

Overproduction of the exopolysaccharide alginate causes mucoid conversion in Pseudomonas aeruginosa and is a poor prognosticator in cystic fibrosis. The ECF σ factor AlgU and its cognate anti-σ factor MucA are two principal regulators of alginate production. Here, we report the identification of three positive regulators of alginate biosynthesis: PA4033 (designated mucE), PA3649 (designated mucP), and algW. MucE, a small protein (9.5 kDa), was identified as part of a global mariner transposon screen for new regulators of alginate production. A transposon located in its promoter caused the overexpression of MucE and mucoid conversion in P. aeruginosa strains PAO1 and PA14. …


Ayx1 Dna-Decoy Compound Prevents The Maintenance Of Pain After Incisional, Inflammatory Or Neuropathic Injury, Julien Mamet, Michael Klukinov, Shelle A. Malkmus, Renee R. Donahue, Samantha Williams, Bradley K. Taylor Jan 2012

Ayx1 Dna-Decoy Compound Prevents The Maintenance Of Pain After Incisional, Inflammatory Or Neuropathic Injury, Julien Mamet, Michael Klukinov, Shelle A. Malkmus, Renee R. Donahue, Samantha Williams, Bradley K. Taylor

Renee R. Donahue

The persistence of pain following surgery or trauma limits recovery, physical rehabilitation and the return to a normal quality of life. AYX1 is a compound developed for preventing the maintenance of post-surgical pain with a single intrathecal administration prior to surgery. Post-surgical pain arises from a combination of mechanical/incisional, inflammatory and often nerve trauma. Early in the development of pain following such injury, there are waves of gene regulation in DRG and spinal cord neurons leading to long-term sensitization and the maintenance of pain over time. These transcriptional events are necessary to the development and maintenance of pain and involve …