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Mupirocin, sold under the brand name Bactroban among others, is a topical antibiotic useful against superficial skin infections such as impetigo or folliculitis. It may also be used to get rid of methicillin-resistant S. aureus (MRSA) when present in the nose without symptoms. Out of concerns of developing resistance, use for greater than ten days is not recommended. It is used as a cream or ointment applied to the skin.
Read the full article on WikipediaStaphylococcus aureus infection Clinical criteria: Patient must have nasal colonisation with the bacteria. Population criteria: Patient must be an Aboriginal or a Torres Strait Islander person.
“Pseudomonic acid (mupirocin) inhibits isoleucine—tRNA ligase in bacteria, leading to depletion of isoleucyl-tRNA and accumulation of the corresponding uncharged tRNA. Depletion of isoleucyl-tRNA results in inhibition of protein synthesis. The uncharged form of the tRNA binds to the aminoacyl-tRNA binding site of ribosomes, triggering the formation of (p)ppGpp, which in turn inhibits RNA synthesis. The combined inhibition of protein synthesis and RNA synthesis results in bacteriostasis. This mechanism of action is shared with furanomycin, an analog of isoleucine.”
“20 to 40 minutes”
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