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In microbiology, the minimum inhibitory concentration (MIC) is the lowest concentration of a chemical, usually a drug, which prevents visible in vitro growth of bacteria or fungi. [ 1 ] [ 2 ] MIC testing is performed in both diagnostic [ 1 ] [ 2 ] and drug discovery laboratories.
The minimum bactericidal concentration (MBC) is the lowest concentration of an antibacterial agent required to kill a particular bacterium. [1] It can be determined from broth dilution minimum inhibitory concentration (MIC) tests by subculturing to agar plates that do not contain the test agent.
Agar dilution is one of two methods (along with broth dilution) used by researchers to determine the minimum inhibitory concentration (MIC) of antibiotics. It is the dilution method most frequently used to test the effectiveness of new antibiotics when a few antibiotics are tested against a large panel of different bacteria.
Bacteria are marked as sensitive, resistant, or having intermediate resistance to an antibiotic based on the minimum inhibitory concentration (MIC), which is the lowest concentration of the antibiotic that stops the growth of bacteria. The MIC is compared to standard threshold values (called "breakpoints") for a given bacterium and antibiotic. [28]
Etest is a quantitative technique for determining the MIC of microoganisms. It is used for a range of Gram-negative and Gram-positive bacteria such as Pseudomonas, [2] [3] Staphylococcus, [4] and Enterococcus species, [5] as well as fastidious bacteria, such as Neisseria and Streptococcus pneumoniae. [1]
The minimum inhibitory concentration (MIC) is then reported as the lowest concentration that produces a clear well and thus inhibits growth. [8] Standardized MIC methods using MHB are not applicable to antimicrobial agents such as defensins, because defensins must be incubated in a low salt buffer, not rich broth, in order to measure their ...
Infectrin, Bactrim (Brazil) Novo-Trimel [68] Primadex (manufactured by Dexa Medica and distributed in Indonesia) Primotren (Lek in Slovenia and other countries) Resprim; Sanprima (manufactured by PT Sanbe Farma and distributed in Indonesia) Septra (Aspen Pharmacare and formerly GlaxoSmithKline) Septram (Panama) Septran (GlaxoSmithKline) [69 ...
Polymyxin B is composed of polymyxins B1, B1-I, B2, B3, and B6. Polymyxins B1 and B2 are considered major components. These related components are structurally identical with the exception of a variable fatty acid group on each fraction. Results from in vitro studies have shown marginal differences in MIC data when comparing the fractions. [14]
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