polymyxin

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polymyxin

[‚päl·i′mik·sən]
(microbiology)
Any of the basic polypeptide antibiotics produced by certain strains of Bacillus polymyxa.
References in periodicals archive ?
The Colistin and Polymixin B were found equally effective againstAcinetobacter spp.
Two Bt isolates (MS-SBS- Bt4 and 5) were resistant to kanamycin, ampicillin, tetracyclin and oxytetracyclin and sensitive to polymixin, streptomycin, bacitracin and neomycin (Table II).
Repeated isolation of Pseudomonas aeruginosa isolates resistant to both polymixins and carbapenems from 1 patient.
Isolates which were resistant to all classes including the glycicyclins and polymixins were labelled as PDR.
Furthermore, these effects were not seen with boiled CRP or after CRP pretreatment with an anti-CRP antibody, and they were not abrogated with polymixin B (data not shown).
Polymixin B is active only against gram-negative bacteria and therefore is given in combination with other antibiotics, including trimethoprim, bacitracin, and neomycin/bacitracin, which broaden the coverage to include staphylococci, streptococci, and some gramnegative bacteria including H.
The lozenges contain polymixin E (P), tobramycin (T) and amphotericin B (A), which together provide broad spectrum antibacterial and antifungal cover.
Woo and colleagues described the first three cases of Tsukamurella conjunctivitis, all of whom responded to treatment with either polymixin B-neomycin or chloramphenicol eye drops (7).
The products include bacitracin; bacitracin zinc and polymixin B sulfate; gentamicin sulfate, neomycin and polymyxin B sulfates and bacitracin zinc; neomycin and polymyxin B sulfates and dexamethasone; neomycin and polymyxin B sulfates; bacitracin zinc and hydrocortisone acetate; and erythromycin ophthalmic ointments USP.
cereus - agar MYP (Mannitol yolk polymixin agar; Difco), suplementado com 0,1% de Sulfato de Polimixina B (Sigma).
The use of ointments containing polymixin, neomycin and bacitracin during the evenings is also recommended [30].
Currently, lyophilized NYCBOH vaccinia containing calf lymph is mixed with a diluent containing polymixin B, streptomycin, chlortetracycline, and neomycin to a titer of [greater than or equal to] [10.