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polymyxinenUK
pol·y·myx·in P0426800 (pŏl′ē-mĭk′sĭn)n. Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.
[New Latin polymyxa, specific epithet (poly- + Greek muxa, slime) + -in.]polymyxin (ˌpɒlɪˈmɪksɪn) n (Pharmacology) any of several polypeptide antibiotics active against Gram-negative bacteria, obtained from the soil bacterium Bacillus polymyxa[C20: from New Latin Bacillus polymyxa; see poly-, myxo-, -in]Thesaurus| Noun | 1. | polymyxin - any of several toxic antibiotics obtained from a particular soil bacteriumantibiotic, antibiotic drug - a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs" |
polymyxinenUK
polymyxin[‚päl·i′mik·sən] (microbiology) Any of the basic polypeptide antibiotics produced by certain strains of Bacillus polymyxa. polymyxinenUK
polymyxin [pol″e-mik´sin] a generic term for antibiotics derived from various strains of Bacillus polymyxa, several closely related compounds being designated by letters.polymyxin B a bacteriostatic and bactericidal antibiotic, effective mainly against gram-negative organisms. It is used as the sulfate salt, and is especially effective against Pseudomonas aeruginosa, which may cause septicemia, meningitis, urinary tract infections, and middle ear infections. Toxicity is low but there is sometimes damage to kidney and nerve cells. The route of administration is parenteral, oral, or topical to the ear or eye. Oral preparations are not used for systemic infections because the drug is poorly absorbed from the intestinal tract.pol·y·myx·in (pol'ē-mik'sin), A mixture of antibiotic substances obtained from cultures of Bacillus polymyxa (B. serosporus), an organism found in water and soils and obtainable as a crystalline hydrochloride; all are polypeptides containing various amino acids and a branched-chain fatty acid, usually (+)-6-methyloctanoic acid. There are several polymyxins, (for example, designated A, B1, C, D, E, M, T), which are about equally effective against gram-negative bacteria, but which differ in toxicity, polymyxin E (colistin) and polymyxin B being the least toxic.
See also: colistimethate sodium. polymyxin (pŏl′ē-mĭk′sĭn)n. Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.pol·y·myx·in (P) (pol'ē-mik'sin) A mixture of antibiotic substances obtained from cultures of Bacillus polymyxa, an organism found in water and soils and obtainable as a crystalline hydrochloride. pol·y·myx·in (pol'ē-mik'sin) A mixture of antibiotic substances obtained from cultures of Bacillus polymyxa (B. serosporus). polymyxinenUK
Related to polymyxin: Polymyxin B, neomycin, Polymyxin b sulfate, Polymyxin EWords related to polymyxinnoun any of several toxic antibiotics obtained from a particular soil bacteriumRelated Words- antibiotic
- antibiotic drug
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