Mupirocin calcium hydrate

• CAT Number: R045881
• CAS Number: 115074-43-6
• Molecular Formula: C26H46O10
• Molecular Weight: 538.68
• Purity: ≥95%

Mupirocin (BRL-4910A, Pseudomonic acid) calcium hydrate is an orally active antibiotic isolated from Pseudomonas fluorescens. Mupirocin calcium hydrate apparently exerts its antimicrobial activity by reversibly inhibiting isoleucyl-transfer RNA, thereby inhibiting bacterial protein and RNA synthesis[1][2].
Mupirocin (BRL-4910A, Pseudomonic acid) calcium hydrate (0-100 μM; 48 h) shows antibacterial effect against staphylococci, streptococci and certain gram-negative bacteria, with MIC values range from 0.06-0.25 μg/mL (MIC50 =0.12 μg/mL, MIC90 =0.25 μg/mL)[1].
Mupirocin calcium hydrate is highly bound (95% bound) to human serum protein, thus results in activity inhibition in the presence of human serum[1].
Mupirocin calcium hydrate apparently exerts its antimicrobial activity by reversibly inhibiting isoleucyl-transfer RNA, thereby inhibiting bacterial protein and RNA synthesis[2].
Mupirocin calcium hydrate (2% ointment) reduces pro-inflammatory cytokines IL-1β and IL-17 level, decreases tumor necrosis factor-alpha (TNF-α) expression, and increases the leavel of vascular endothelial growth factor (VEGF)[4].
Mupirocin calcium hydrate inhibits MS (S. epidermidis ATCC 12228), MR (S. epidermidis (Se56-99)), and VIR (S. epidermidis (Se43-98)) with MICs of 0.25, 1.26, 1.59 mg/L[5].
Note: MIC, the minimum inhibition concentration.
MRSA: Meticillin-resistant Staphylococcus aureus
Mupirocin (BRL-4910A, Pseudomonic acid) calcium is well absorbed after oral and parenteral administration but serum antibiotic concentrations were short-lived as a result of extensive degradation to the antibacterially inactive metabolite, monic acid A[1].
Mupirocin calcium (2% ointment; external administration; twice daily; 3-6 d) decreases the total bacterial loads in the skin lesions with either topical treatment[3].
Mupirocin calcium (2% ointment; external administration; 4 d) alleviates MRSA-infected pressure ulcers in mice[4].
Mupirocin calcium (100 mg/mL; s.c.; 7 d) exerts prevention efficacy against vascular prosthetic graft infection due to Staphylococcus epidermidis[5].

Reference

[1]. Sutherland R, et al. Antibacterial activity of mupirocin (pseudomonic acid), a new antibiotic for topical use. Antimicrob Agents Chemother. 1985 Apr;27(4):495-8.
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[2]. Parenti MA, et al. Mupirocin: a topical antibiotic with a unique structure and mechanism of action. Clin Pharm. 1987 Oct;6(10):761-70.
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[3]. Vingsbo Lundberg C, et al. Efficacy of topical and systemic antibiotic treatment of meticillin-resistant Staphylococcus aureus in a murine superficial skin wound infection model. Int J Antimicrob Agents. 2013 Sep. 42(3):272-5.
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[4]. Mohammad H, Abutaleb NS, Dieterly AM, Lyle LT, Seleem MN. Investigating auranofin for the treatment of infected diabetic pressure ulcers in mice and dermal toxicity in pigs. Sci Rep. 2021 May 25;11(1):10935.
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[5]. Giacometti A, et al. Mupirocin prophylaxis against methicillin-susceptible, methicillin-resistant, or vancomycin-intermediate Staphylococcus epidermidis vascular-graft infection. Antimicrob Agents Chemother. 2000 Oct. 44(10):2842-4.
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