What is pyocyanin used for?
Pyocyanin is a blue secondary metabolite, turning red below pH 4.9, with the ability to oxidise and reduce other molecules and therefore kill microbes competing against P. aeruginosa as well as mammalian cells of the lungs which P. aeruginosa has infected during cystic fibrosis.
What causes pyocyanin?
Pyocyanin is produced in large quantities in low iron-containing media and helps with iron metabolism in the bacterium. Infections caused by P. aeruginosa are suppurative as a result of secretion of this pigment (derived from ‘pyocyaneus’ or ‘blue pus’) at the site of infection.
Is pyocyanin a siderophore?
A derivative of pyocyanin, pyochelin is a siderophore that is produced under low-iron conditions to sequester iron form the environment for the growth of the pathogen.
Is pyocyanin a pigment?
Pyocyanin is a blue pigment synthesized by about 95% of the strains of Pseudomonas aeruginosa.
Is pyocyanin toxic?
aeruginosa exoproducts. Here, we focus on pyocyanin and demonstrate that pyocyanin is toxic to both respiring and nonrespiring S.
Is pyocyanin a protein?
Pyocyanin is produced from chorismic acid via the phenazine pathway, nine proteins encoded by a gene cluster.
Is pyocyanin a virulence factor?
Pyocyanin has recently emerged as an important virulence factor produced by Pseudomonas aeruginosa. The redox-active tricyclic zwitterion has been shown to have a number of potential effects on various organ systems in vitro, including the respiratory, cardiovascular, urological, and central nervous systems.
What is pyocyanin and how does it work?
Pyocyanin is a blue, secondary metabolite with the ability to oxidise and reduce other molecules and therefore kill microbes competing against P. aeruginosa as well as mammalian cells of the lungs which P. aeruginosa has infected during cystic fibrosis. Since pyocyanin is a zwitterion at blood pH, it is easily able to cross the cell membrane.
What is the electrochemical detection of pyocyanin?
The electrochemical detection of pyocyanin has proven its worth as a potential diagnostic approach for indicating the presence of PA and as a tool for a rapid quantitative screening of the molecule in laboratory settings.
Does pyocyanin have a derogatory effect in cystic fibrosis?
Many studies have concluded that pyocyanin has a derogatory effect in cystic fibrosis which enables P. aeruginosa to persist in the cystic fibrosis lung; it is often detected in the sputum of cystic fibrosis patients.
What is the pathophysiology of pyocyanin produced by Pseudomonas aeruginosa?
P. aeruginosa is a common wound pathogen that produces the redox-active phenazine derivative pyocyanin, substantial amounts of which have been identified in burn wound exudates of infected patients ( 13 ).