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Methicillin-susceptible Staphylococcus aureus ST398-t571 harbouring the macrolide-lincosamide-streptogramin B resistance gene erm(T) in Belgian hospitals.
J Antimicrob Chemother. 2011 Nov; 66(11):2455-9.JA

Abstract

OBJECTIVES

Methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-susceptible S. aureus (MSSA), collected from 109 Belgian acute-care hospitals during a national survey in 2008, were investigated for macrolide-lincosamide (ML) resistance with particular emphasis on the analysis of erm(T)-carrying isolates.

METHODS

In total, 314 MRSA and 212 MSSA were collected and characterized by spa typing. The SCCmec type of MRSA was determined. Resistance to ML antibiotics was detected by agar dilution and resistant strains were screened by PCR for erm(A), erm(C) and msr(A). Five ML-resistant MSSA isolates, negative by PCR for the aforementioned genes, were further characterized.

RESULTS

Half of all MRSA isolates (n = 157; 50.0%) were resistant to erythromycin and harboured the gene erm(A) (n = 112), erm(C) (n = 41), erm(A) + erm(C) (n = 3) or msr(A) (n = 1). The erm(A) gene was mainly present in MRSA spa-CC002-ST5-SCCmec II and spa-CC008-ST8-SCCmec IV (where CC stands for clonal complex and ST stands for sequence type); the distribution of erm(C) was more diverse. Thirty-five of the 40 erythromycin-resistant MSSA (18.9%) carried the gene erm(A) (n = 17), erm(C) (n = 9) or msr(A) (n = 9). The remaining five MSSA were ST398-t571 isolates, which exhibited closely related ApaI PFGE patterns, harboured the gene erm(T) in the chromosomal DNA and did not exhibit additional resistances. These isolates were from severe infections in patients, of whom four had no contact and one had only indirect contact with livestock via a family member working in animal husbandry.

CONCLUSIONS

The ML-streptogramin B ('MLS(B)') resistance genes erm(A) or erm(C) were detected in the majority of ML-resistant MRSA and MSSA isolates. The erm(T) gene was identified in MSSA ST398 isolates from five independent patients who lacked direct contact with livestock.

Authors+Show Affiliations

Laboratoire de Référence MRSA-Staphylocoques, Service de Microbiologie, Université Libre de Bruxelles, Hôpital Erasme, Brussels, Belgium. stien.vandendriessche@ulb.ac.beNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21868413

Citation

Vandendriessche, Stien, et al. "Methicillin-susceptible Staphylococcus Aureus ST398-t571 Harbouring the Macrolide-lincosamide-streptogramin B Resistance Gene erm(T) in Belgian Hospitals." The Journal of Antimicrobial Chemotherapy, vol. 66, no. 11, 2011, pp. 2455-9.
Vandendriessche S, Kadlec K, Schwarz S, et al. Methicillin-susceptible Staphylococcus aureus ST398-t571 harbouring the macrolide-lincosamide-streptogramin B resistance gene erm(T) in Belgian hospitals. J Antimicrob Chemother. 2011;66(11):2455-9.
Vandendriessche, S., Kadlec, K., Schwarz, S., & Denis, O. (2011). Methicillin-susceptible Staphylococcus aureus ST398-t571 harbouring the macrolide-lincosamide-streptogramin B resistance gene erm(T) in Belgian hospitals. The Journal of Antimicrobial Chemotherapy, 66(11), 2455-9. https://doi.org/10.1093/jac/dkr348
Vandendriessche S, et al. Methicillin-susceptible Staphylococcus Aureus ST398-t571 Harbouring the Macrolide-lincosamide-streptogramin B Resistance Gene erm(T) in Belgian Hospitals. J Antimicrob Chemother. 2011;66(11):2455-9. PubMed PMID: 21868413.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Methicillin-susceptible Staphylococcus aureus ST398-t571 harbouring the macrolide-lincosamide-streptogramin B resistance gene erm(T) in Belgian hospitals. AU - Vandendriessche,Stien, AU - Kadlec,Kristina, AU - Schwarz,Stefan, AU - Denis,Olivier, Y1 - 2011/08/25/ PY - 2011/8/27/entrez PY - 2011/8/27/pubmed PY - 2012/3/22/medline SP - 2455 EP - 9 JF - The Journal of antimicrobial chemotherapy JO - J Antimicrob Chemother VL - 66 IS - 11 N2 - OBJECTIVES: Methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-susceptible S. aureus (MSSA), collected from 109 Belgian acute-care hospitals during a national survey in 2008, were investigated for macrolide-lincosamide (ML) resistance with particular emphasis on the analysis of erm(T)-carrying isolates. METHODS: In total, 314 MRSA and 212 MSSA were collected and characterized by spa typing. The SCCmec type of MRSA was determined. Resistance to ML antibiotics was detected by agar dilution and resistant strains were screened by PCR for erm(A), erm(C) and msr(A). Five ML-resistant MSSA isolates, negative by PCR for the aforementioned genes, were further characterized. RESULTS: Half of all MRSA isolates (n = 157; 50.0%) were resistant to erythromycin and harboured the gene erm(A) (n = 112), erm(C) (n = 41), erm(A) + erm(C) (n = 3) or msr(A) (n = 1). The erm(A) gene was mainly present in MRSA spa-CC002-ST5-SCCmec II and spa-CC008-ST8-SCCmec IV (where CC stands for clonal complex and ST stands for sequence type); the distribution of erm(C) was more diverse. Thirty-five of the 40 erythromycin-resistant MSSA (18.9%) carried the gene erm(A) (n = 17), erm(C) (n = 9) or msr(A) (n = 9). The remaining five MSSA were ST398-t571 isolates, which exhibited closely related ApaI PFGE patterns, harboured the gene erm(T) in the chromosomal DNA and did not exhibit additional resistances. These isolates were from severe infections in patients, of whom four had no contact and one had only indirect contact with livestock via a family member working in animal husbandry. CONCLUSIONS: The ML-streptogramin B ('MLS(B)') resistance genes erm(A) or erm(C) were detected in the majority of ML-resistant MRSA and MSSA isolates. The erm(T) gene was identified in MSSA ST398 isolates from five independent patients who lacked direct contact with livestock. SN - 1460-2091 UR - https://www.unboundmedicine.com/medline/citation/21868413/Methicillin_susceptible_Staphylococcus_aureus_ST398_t571_harbouring_the_macrolide_lincosamide_streptogramin_B_resistance_gene_erm_T__in_Belgian_hospitals_ L2 - https://academic.oup.com/jac/article-lookup/doi/10.1093/jac/dkr348 DB - PRIME DP - Unbound Medicine ER -