Occurrence of vancomycin-resistant Staphylococcus aureus in the oral cavity of patients with dental caries

Vellappally, Sajith and Divakar, Darshan Devang and Al Kheraif, Abdulaziz Abdullah and Ramakrishnaiah, Ravikumar and Alqahtani, Amer and Dalati, M. H. N. and Anil, Sukumaran and Khan, Aftab Ahmed and Harikrishna Varma, P. R. (2017) Occurrence of vancomycin-resistant Staphylococcus aureus in the oral cavity of patients with dental caries. Acta Microbiologica et Immunologica Hungarica, 64 (3). pp. 343-351. ISSN 1217-8950


Download (128kB) | Preview


Oral streptococci are the major group of microbes isolated from oral microflora. They represent frequent pathogens of infective endocarditis (IE), and it is assumed that in most of the cases oral streptococci are acquired via mucosa layer of oral cavity. Staphylococcus aureus is also frequently isolated from IE as it accounts for 20%–30% of all cases. Vancomycin has been the most reliable therapeutic agent against infections caused by methicillin-resistant S. aureus (MRSA). The main objective of this study was to examine the occurrence of S. aureus species in dental caries specimens. Antimicrobial susceptibility testing of S. aureus to four antibiotics namely vancomycin, linezolid, teicoplanin, and daptomycin was performed. Detection of vancomycin resistance was conducted using polymerase chain reaction. Among the tested 150 strains, 98 were MRSA and of that 54 were vancomycin sensitive and 27 were resistant. All 98 MRSA strains were positive for mecA and 36 yielded pvl, whereas 13 carried vanA and only 2 were positive for vanB. Majority of the isolates showed sensitivity toward daptomycin and linezolid. Strains of S. aureus exhibiting decreased susceptibility to different antibiotics like vancomycin, daptomycin, and linezolid severely compromise the therapeutic alternatives and require a considerable amount of time, public awareness, and integrative health-care strategies to prevent the emergence of resistance to these compounds.

Item Type: Article
Subjects: Q Science / természettudomány > QR Microbiology / mikrobiológia
Depositing User: Ágnes Sallai
Date Deposited: 08 Nov 2017 10:55
Last Modified: 30 Sep 2018 23:16

Actions (login required)

Edit Item Edit Item