polymyxin b

Polymyxin B is a polymyxin antibiotic with antimicrobial activity that acts by binding with high affinity to the LPS of the bacterial wall and by increasing the permeability of the bacterial cell membrane, and is used in the study of infections caused by drug-resistant (XDR) Gram-negative bacteria (GNB) Polymyxin B is used in the study of endotoxemia.

Polymyxin B Sulfate (Poly-RX) is a mixture of polymyxins B1 and B2, obtained from Bacillus polymyxa strains. They are basic polypeptides of about eight amino acids and have cationic detergent action on cell membranes. Polymyxin B Sulfate (Poly-RX) is used for infections with gram-negative organisms, but may be neurotoxic and nephrotoxic.

Polymyxin B nonapeptide, a cationic cyclic peptide derived by enzymatic processing from the naturally occurring peptide polymyxin B, is able to increase the permeability of the outer membrane of Gram-negative bacteria toward hydrophobic antibiotics probab

Polymyxin B nonapeptide TFA (catalog number T64687) is a valuable organic compound for life sciences research.

Polymyxin B nonapeptide acetate is a cationic cyclic peptide. Polyxin B nonapeptide is a derivative produced by enzymatic cleavage of polyxin B. Compared with polyxin B, polyxin B nonapeptide has low toxicity, lacks bactericidal activity and still has the

Polymyxin B1, a potent antimicrobial lipopeptide derived from Bacillus polymyxa, has potential for treating multidrug-resistant Gram-negative bacterial infections.

Polymyxin B1-i is a polypeptide antibiotic.

Polymyxin B2 is an antibiotic primarily utilized for resistant Gram-negative infections. It is derived from the bacterium Bacillus polymyxa.

Polymyxin B2, a significant component of polymyxin B, is an antibiotic cationic lipopeptide initially derived from B. polymyxa. This compound effectively inhibits P. aeruginosa, A. baumannii, K. pneumoniae, and E. cloacae strains, exhibiting minimum inhibitory concentrations (MICs) of 1-2, 0.5-1, 0.25-0.5, and 0.25-1 µg/ml, respectively. Notably, in a mouse model of P. aeruginosa bloodstream infection, administration of polymyxin B2 at a dosage of 4 mg/kg has been shown to decrease the number of colony-forming units (CFUs) in the blood.

Deacylpolymyxin B increases outer membrane permeability.

PA3552-IN-1 is an antibiotic adjuvant that can reduce the expression of PA3552 and restore the sensitivity of MDR Pseudomonas aeruginosa DK2 strain to Polymyxin B.

SPR741 acetate is a cationic peptide derived from polymyxin B. It exhibits antimicrobial activity against gram-negative bacteria by inhibiting severe gram-negative bacterial sensory by increasing the permeability of the outer membrane of gram-negative bacteria.SPR741 acetate is often used in conjunction with antibiotics for the treatment of a number of diseases.

Antibacterialagent 247 (compound 30b) is a bacterium (bacterial) antagonist that significantly inhibits the formation of biofilms by Pseudomonas aeruginosa (IC50=5.8 μM) and various virulence phenotypes. It also enhances the antibacterial activity of combined treatments with tobramycin and polymyxin B.

IKD-8344 is a macrocyclic dilactone originally isolated from an actinomycete species with diverse biological activities, including anticancer, antimicrobial, and anthelmintic properties [1,2,3]. It is cytotoxic to L5178Y murine leukemia cells (IC50 = 0.54 ng ml) [1], inhibits growth of the mycelial form of C. albicans (MIC = 6.25 μg ml), and potentiates the activity of polymyxin B against the multidrug-resistant pathogenic bacterium B. cenocepacia [2,3]. Additionally, it is active against T. spiralis in vitro and in vivo [1].

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.

6-Methylheptanoic acid (6-methyl-heptanoic acid) is orally toxic and is involved in the synthesis of polymyxin B and colistin hapten PMB-A.

SPR741 TFA (NAB741 TFA) is a cationic peptide derived from polymyxin B and is a potentiator molecule.

SPR741, formerly NAB741 (12), is a cationic peptide derived from polymyxin B and is one such potentiator molecule that is under development for the treatment of serious Gram-negative bacterial infections.