Colistin (sulfate)

Colistin (sulfate)

CAT N°: 17584
Price:

49.00 41.65

Colistin is a complex antibiotic containing greater than 30 components, with the cyclic polypeptide antibiotics polymyxins E1 (colistin A) and E2 (colistin B) as the major components.{40859,43058} It was originally isolated from B. polymyxa.{40859} Colistin inhibits the growth of the Gram-negative bacteria E. coli, P. aeruginosa, P. fluorescens, and S. enterica (MICs = 0.04-2.08 ?g/ml) and Gram-positive L. ivanovii and L. monocytogenes (MICs = 2.5-10 ?g/ml) but is not active against Gram-positive L. lactis, P. polymyxa, P. acidilactici, or S. aureus at concentrations up to 5 ?g/ml.{40860} It also inhibits the growth of clinical isolates of both susceptible and multidrug-resistant P. aeruginosa (MICs = 1-2 mg/l).{40861} Colistin binds selectively to LPS from susceptible strains of K. pneumoniae compared to resistant strains (Kis = 0.56 and 2.83 ?M, respectively), which may contribute to its mechanism of action against Gram-negative bacteria.{40863} In vivo, colistin slows the growth of P. aeruginosa and A. baumannii in a neutropenic mouse model of thigh infection.{40862}

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