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arbekacin sulfate, arbekacin
Arbekacin INN is a semisynthetic aminoglycoside antibiotic It is primarily used for the treatment of infections caused by multi-resistant bacteria including methicillin-resistant Staphylococcus aureus MRSA Arbekacin was originally synthesized from dibekacin in 1973 It has been registered and marketed in Japan since 1990 under the trade name Habekacin Arbekacin is no longer covered by patent and generic versions of the drug are also available under such trade names as Decontasin and Blubatosine


  • 1 Pharmacology
    • 11 Pharmacodynamics
    • 12 Mechanism of action
    • 13 Absorption
    • 14 Toxicity
  • 2 References


Arbekacin is approved for the treatment of pneumonia and sepsis caused by methicillin-resistant Staphylococcus aureus MRSA Because of its synergistic effect with beta-lactams, Arbekacin also holds promise as a treatment for multidrug-resistant Gram-negative bacterial infections such as multidrug-resistant Pseudomonas aeruginosa and Acinetobacter baumannii


Aminoglycosides such as Arbekacin work by binding to the bacterial 30S ribosomal subunit, causing misreading of tRNA which consequently, leaves the bacterium unable to synthesize proteins vital to its growth Energy is needed for aminoglycoside uptake into the bacterial cell Anaerobes have less energy available for this uptake, so aminoglycosides are less active against anaerobes

Mechanism of action

Aminoglycosides such as Arbekacin inhibit protein synthesis in susceptible bacteria by irreversibly binding to the bacterial 30S ribosomal subunit Specifically, Arbekacin binds to four nucleotides of 16S rRNA and a single amino acid of protein S12 This interferes with the decoding site in the vicinity of nucleotide 1400 in the 16S rRNA component of the 30S subunit This region interacts with the wobble base in the anticodon of tRNA This leads to misreading of mRNA, so incorrect amino acids are inserted into the polypeptide, leading to nonfunctional or toxic peptides and the breakup of polysomes into nonfunctional monosomes


Aminoglycosides are not well absorbed from the gastrointestinal tract, so they are typically administered parenterally


Ototoxicity and nephrotoxicity are the most serious adverse effects of aminoglycoside therapy and are more likely to occur in patients with a history of renal impairment or who are receiving other ototoxic and/or nephrotoxic drugs Normal duration of intramuscular or intravenous aminoglycoside therapy is 7–10 days, though longer treatment is sometimes necessary Toxicity is more likely to occur when aminoglycoside treatment is continued for longer than 10 days


  1. ^ Inoue, M; M Nonoyama; R Okamoto; T Ida 1994 "Antimicrobial activity of arbekacin, a new aminoglycoside antibiotic, against methicilin-resistant Staphylococcus aureus" Drugs Exp Clin Res 20 6: 233–240 PMID 7758395 
  2. ^ Cordeiro, J C R; Reis, A O; Miranda, E A; Sader, H S 2001 The Arbekacin Study Group "In vitro antimicrobial activity of the aminoglycoside arbekacin tested against oxacillin-resistant Staphylococcus aureus isolated in Brazilian hospitals" Brazilian J Infectious Diseases 5 3: 130–135 doi:101590/s1413-86702001000300005 PMID 11506776 
  3. ^ Kobayashi, Y; Uchida, H; Kawakami, Y 1995 "Arbekacin" Intl J Antimicrobial Agents 5 4: 227–230 doi:101016/0924-85799500014-Y PMID 18611673 
  4. ^ Matsumoto T 2014 "Arbekacin: another novel agent for treating infections due to methicillin-resistant Staphylococcus aureus and multidrug-resistant Gram-negative pathogens" Clinical Pharmacology: Advances and Applications 6: 139–148 doi:102147/CPAAS44377 PMC 4186621  PMID 25298740 

arbekacin, arbekacin dosage, arbekacin sulfate

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