P4932

Sigma-Aldrich

Polymyxin B sulfate salt

powder, BioReagent, suitable for cell culture

Empirical Formula (Hill Notation):
C55H96N16O13 · 2H2SO4
Número de CAS:
Peso molecular:
1385.61
Número de EC:
Número MDL:
NACRES:
NA.76

Nivel de calidad

200

línea de producto

BioReagent

formulario

powder

potencia

≥6,000 USP units per mg

aplicaciones

cell culture | mammalian: suitable

solubilidad

H2O: 50 mg/mL

Modo de acción

cell membrane | interferes

espectro de actividad antibiótica

Gram-negative bacteria

temp. de almacenamiento

2-8°C

InChI

1S/C48H82N16O13.H2O4S/c1-27(2)24-37-47(76)59-32(11-19-52)41(70)56-31(10-18-51)43(72)61-35(14-22-65)39(68)54-21-13-34(45(74)57-33(12-20-53)44(73)64-38(48(77)63-37)25-28-6-4-3-5-7-28)60-42(71)30(9-17-50)58-46(75)36(15-23-66)62-40(69)29(8-16-49)55-26-67;1-5(2,3)4/h3-7,26-27,29-38,65-66H,8-25,49-53H2,1-2H3,(H,54,68)(H,55,67)(H,56,70)(H,57,74)(H,58,75)(H,59,76)(H,60,71)(H,61,72)(H,62,69)(H,63,77)(H,64,73);(H2,1,2,3,4)

InChI key

HNDFYNOVSOOGDU-UHFFFAOYSA-N

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Descripción general

Polymyxin B is a member of the polymyxin group of antibiotics, obtained from different strains of Bacillus polymyxa and related species. It contains a cyclic heptapeptide unit and a tripeptide side chain, which is N-acylated by a fatty acyl residue. Polymyxin B sulfate salt is generally used for the treatment of Gram-negative bacterial infections.
Chemical structure: peptide

Aplicación

Polymyxin B sulfate salt has been used:
  • for the treatment of BAC-1.2F5 murine macrophages as an LPS (lipopolysaccharide) inhibitor
  • as positive and negative control during microbicidal concentration (MCC) assay

Acciones bioquímicas o fisiológicas

Polymyxin B sulfate has been used clinically to treat infections of the urinary tract, meninges and blood stream caused by susceptible strains of Pseudomonas aeruginosa. It also has been used in studying multidrug-resistant pathogens, as an immobilized agent for removal of endotoxins, and to induce pore formation in the membranes of cortex cells from excised sorghum roots.
Mode of Action: Polymyxin B Sulfate binds to the lipid A portion of bacterial lipopolysaccharides†, disrupting the cytoplasmic membrane by inducing pores large enough to permit nucleotide leakage in bacterial walls. This disrupts the permeability of the cytoplasmic membrane.

Antimicrobial spectrum: Has bactericidal action on most gram-negative bacilli††, including E. Coli and on most fungi and gram-positive bacteria.

Precaución

As supplied, the product should be stored at 2-8°C in the dark. No change was observed in retained samples after three years′ of storage in these conditions. Stock solutions should be sterile filtered and stored at 2-8°C. They are stable at 37°C for 5 days.

Nota de preparación

Polymyxin B sulfate is soluble in water at 50 mg/mL, producing a very slightly hazy, colorless to yellow solution. It has only minimal solubility in any organic solvent. For example, it has a solubility of 0.115 mg/mL in ethanol.

Otras notas

1mu,5mu
Keep container tightly closed in a dry and well-ventilated place.Keep in a dry place.

storage_class_code

13 - Non Combustible Solids

WGK Alemania

WGK 3

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Equipo de protección personal

dust mask type N95 (US), Eyeshields, Gloves

Certificado de Análisis

Certificado de origen

Sineenart Sengyee et al.
PLoS neglected tropical diseases, 12(2), e0006287-e0006287 (2018-02-24)
Burkholderia pseudomallei is an environmental bacterium that causes melioidosis, a major community-acquired infection in tropical regions. Melioidosis presents with a range of clinical symptoms, is often characterized by a robust inflammatory response, may relapse after treatment, and results in high...
M C Skinner et al.
Antimicrobial agents and chemotherapy, 53(4), 1482-1489 (2009-02-04)
A topical microbicide that women can use to prevent sexually transmitted diseases (STDs) is essential, and many microbicide candidates are being tested for activity against human immunodeficiency virus and other STDs, including Chlamydia trachomatis. Screening assays for assessing the activity...
J W Kang et al.
Journal of chromatography. A, 879(2), 211-218 (2000-07-13)
A capillary zone electrophoresis method for analysis of polymyxin B sulfate is described. In this method, triethanolamine (TEA)-phosphate buffer at pH 2.5 was employed to reduce the adsorption of analyte onto the capillary wall. Methyl-beta-cyclodextrin (M-beta-CD) and 2-propanol (IPA) were...
Franz G Zingl et al.
Cell host & microbe, 27(2), 225-237 (2020-01-07)
Gram-negative bacteria release outer membrane vesicles into the external milieu to deliver effector molecules that alter the host and facilitate virulence. Vesicle formation is driven by phospholipid accumulation in the outer membrane and regulated by the phospholipid transporter VacJ/Yrb. We use...
P Dello Sbarba et al.
Cytokine, 8(6), 488-494 (1996-06-01)
Macrophage colony-stimulating factor (M-CSF) is the main growth factor for mononuclear phagocytes. Responsiveness to growth factors is reduced in the course of functional activation of macrophages. We studied the interference of the macrophage activator interleukin 2 (IL-2) with the response...

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