colistin

Colistin (Polymyxin E), a polypeptide antibiotic with oral activity, exhibits strong efficacy against a range of Gram-negative rod-shaped bacteria, such as multidrug-resistant Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae. However, its use is associated with nephrotoxicity. It is primarily utilized in researching infections caused by Gram-negative bacilli [1] [2].

Colistin methanesulfonate sodium salt (Colistimethate Sodium) is a cyclic polypeptide antibiotic from Bacillus colistinus, composed of Polymyxins E1 and E2.

Colistin A is an antibiotic generated by certain strains of the bacteria Paenibacillus polymyxa. Colistin is a mixture of the cyclic polypeptides colistin A and B and belongs to the class of polypeptide antibiotics known as polymyxins. Colistin is effecti

Colistin adjuvant-1 is a mucin adjuvant with enhanced mucin-enhancing activity against gram-negative bacteria. colistin adjuvant-1 exhibits inhibition of NF-κB (IC50: 0.209 μM).

Colistin adjuvant-2 is a compound that acts as a potentiation agent for colistin, effectively enhancing its activity against Gram-negative bacteria [1].

Colistin sulfate (Colistin sulfate (1066-17-7 free base)) is a cyclic polypeptide antibiotic from Bacillus colistinus, composed of Polymyxins E1 and E2.

Colistin A sulfate hydrate, a key constituent of the polymyxin antibiotic Colistin, effectively combats infections from challenging gram-negative bacteria [1].

Colistin-1,3,5,9-tetramethanesulfonic A acid is used for the treatment of serious infections due to selected aerobic Gram-negative pathogens in patients with limited treatment options.

Polymyxin E1, a peptide antibiotic and key component of the cationic lipopeptide antibiotic colistin, was initially extracted from B. polymyxa. It demonstrates effectiveness against P. aeruginosa and E. coli, with minimum inhibitory concentrations (MICs) of 2 µg/ml and 0.8 µg/ml, respectively.

Polymyxin E2, a key component of the cationic lipopeptide antibiotic colistin, was originally derived from B. polymyxa and serves as a peptide antibiotic. It exhibits effective antibacterial activity against the plant pathogen X. oryzae, with an EC50 value of 0.21 µg/ml, and has been shown to both prevent and mitigate rice bacterial leaf blight in greenhouse experiments at a dosage of 200 µg/ml.

Deriglidole (SL 86-0715) is a peripheral adrenergic receptor antagonist that is a selective inhibitor of alpha2 receptors. Deriglidole inhibits colistin and Idazoxan but does not show activity against prazosin and rat cortical and human platelet α2-adrenergic receptors.

PFK-158 is an effective and specific inhibitor PFKFB3.

Antimicrobial Agent-1 (compound 6C) shows strong activity (MIC = 2 μg/mL) against TolC mutant E. coli. Additionally, it synergistically interacts with Colistin to exhibit enhanced activity against Gram-negative bacteria. Importantly, Antimicrobial Agent-1 exhibits no cytotoxic effects on mammalian cell lines. Its MIC values on Caco-2 and Vero cell lines are greater than 128 μg/mL [1].

Histatin 8, a salivary antimicrobial peptide derived from proteolytic fragments of histatin 3 and histatin 5, exhibits activity against A. baumannii strains, both colistin-susceptible and -resistant, at a concentration of 32 µg/ml. Additionally, it is effective against C. albicans and C. tropicalis, with minimum inhibitory concentrations (MICs) of 1 and 5 mg/ml, respectively.