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1995 | 42 | 4 |

Tytuł artykułu

Evolution and resistance expression of MRSA. Evaluation of beta-lactam antibiotics against a set of isogenic strains with different types of phenotypic expression

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Methicillin-resistant Staphylococcus aureus (MRSA) has two mechanisms of resistance to P-lactam antibiotics; one is mediated by mecA gene expression, and the other by penicillinase production. It has been generally accepted in the clinical field that β-lactam antibiotics are not the drugs of choice for MRSA infection. In this report, however, ampicillin and penicillin G were shown to have relatively good activity against MRSA if combined with a β-lactamase inhibitor, sulbactam. These β-lactam antibiotics were found to have relatively high binding affinities to PBP2', the mecA-encoded MRSA-specific penicillin-binding protein. The possible therapeutic application of sulbactam/ampicillin against MRSA infection in combination with arbekacin, an aminoglycoside antibiotic newly developed and introduced into clinical use in Japan, is discussed.

Wydawca

-

Rocznik

Tom

42

Numer

4

Opis fizyczny

p.517-524,fig.

Twórcy

autor
  • Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, Japan 113
autor
autor
autor

Bibliografia

  • 1. Jevons, M.P. (1961) "Celbenin"-resistant staphylococci. Br. Med. j. 1,124-125.
  • 2. Noble, W.C., Virani, Z. & Cree, R.G.A. (1992) Cotransfer of vancomycin and other resistance genes from Enterococcus faecalis NCTC12201 to Staphylococcus aureus. FEMS Microbiol. Lett. 93, 195-198.
  • 3. Utsui, Y. & Yokota, T. (1985) Role of an altered penicillin-binding protein in methicillin- and cephem-resistant Staphylococcus aureus. Anti- microb. Agents Chemother. 28,397-403.
  • 4. Hanaki, H., Akagi, H., Yasui, M., Otani, T., Hyo- do, A. & Hiramatsu, K. (1995) TOC-39, a novel parenteral broad-spectrum cephalosporin with excellent activity against methicillin-resistant Staphylococcus aureus. Antimicrob. Agents Chemo­ther. 39,1120-1126.
  • 5. Hiramatsu, K. (1995) Molecular evolution of MRSA. Microbiol. Immunol. 39,531-543.
  • 6. Hiramatsu, K., Asada, K., Suzuki, E., Okonogi, K. & Yokota, T. (1991) Molecular cloning and nucleotide sequence determination of the regu­lator region of mecA gene in methicillin-resistant Staphylococcus aureus (MRSA). FEBS Lett. 298, 133-136.
  • 7. Suzuki, E., Kuwahara-Arai, K„ Richardson, J.F. & Hiramatsu, K. (1993) Distribution of mec regu­lator genes in methicillin-resistant Staphylo­coccus clinical studies. Antimicrob. Agents Chemother. 37,1219-1226.
  • 8. Ryffel, C., Strassle, A., Kayser, EH. & Berger- -Bachi, B. (1994) Mechanism of heteroresistance in methicillin-resistant Staphylococcus aureus. Antimicrob. Agents Chemother. 38,724-728.
  • 9. Okonogi, K., Noji, Y., Kondo, M., Imada, A. & Yokota, T. (1989) Emergence of methicillin- -resistant clones from cephamycin-resistant Staphylococcus aureus. J. Antimicrob. Chemother. 24,637-645.
  • 10. Hiramatsu, K., Suzuki, E., Takayama, H., Kata- yama, Y. & Yokota, T. (1990) Role of penicillinase plasmids in the stability of the mecA gene in methicillin-resistant Staphylococcus aureus. Antimicrob. Agents Chemother. 34,600-604.
  • 11. Spratt, B.G. (1975) Distinct penicillin-binding proteins involved in the division, elongation, and shape of Escherichia coli K-12. Proc. Natl. Acad. Sci. U.S.A. 72,2999-3003.
  • 12. Suzuki, E., Hiramatsu, K. & Yokota, T. (1992) Survey of methicillin-resistant clinical strains of coagulase-negative staphylococci for mec A gene distribution. Antimicrob. Agents Chemother. 36, 429^434.
  • 13. Chambers, H.F. & Sachdeva, M. (1990) Binding of beta-lactam antibiotics to penicillin-binding proteins in methicillin-resistant Staphylococcus aureus. J. Infec. Dis. 161,1170-1176.
  • 14. Tanaka, T., Okuzumi, K., Iwamoto, A. & Hiramatsu, K. (1995) A retrospective study on methicillin-resistant Staphylococcus aureus cli­nical strains in Tokyo University Hospital. /. Infec. Chemother. 1,40-49.
  • 15. de Lancastre, H. & Tomasz, A. (1994) Reasses­sment of the number of auxiliary genes essential for expression of high-level methicillin resis­tance in Staphylococcus aureus. Antimicrob. Ag­ents Chemother. 38,2590-2598.
  • 16. Matthews, P. & Tomasz, A. (1990) Insertional inactivation of the mec gene in a transposon mulant of a methicillin-resistant clinical isolate of Staphylococcus aureus. Antimicrob. Agents Chemother. 34,1777-1779.
  • 17. Wada, A., Katayama, Y., Hiramatsu, K. & Yokota, T. (1991) Southern hybridization ana­lysis of the mecA deletion from methicillin-resis- tant Staphylococcus aureus. Biochem. Biophys. Res. Commun. 176,1319-1325.

Typ dokumentu

Bibliografia

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