Distribution and antibiotic-resistance of different Staphylococcus species identified by matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) isolated from the oral cavity

Background: The use of antibiotics in dentistry is associated with the emergence and spread of antibiotic-resistant microorganisms, including commensal staphylococci. Methods: A total of 367 oral samples were collected, from which staphylococci were isolated and identified by using matrix assisted l...

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Bibliographic Details
Published in:Journal of oral microbiology 2021-01, Vol.13 (1), p.1983322
Main Authors: Garbacz, Katarzyna, Wierzbowska, Maria, Kwapisz, Ewa, Kosecka-Strojek, Maja, Bronk, Marek, Saki, Morteza, Międzobrodzki, Jacek
Format: Article
Language:English
Subjects:
antibiotic
Antibiotic resistance
Antibiotics
Coagulase
Coagulase-negative staphylococci
cons
Cotrimoxazole
Dentistry
Desorption
Drug resistance
Erythromycin
Fusidic acid
Gentamicin
Geographical distribution
High resistance
Ionization
Mass spectrometry
Mass spectroscopy
MecA protein
Methicillin
methicillin resistance
Microorganisms
mrsa
Multidrug resistance
Oral cavity
Original
Penicillin
Scientific imaging
staphylococcus
Staphylococcus epidermidis
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Summary:Background: The use of antibiotics in dentistry is associated with the emergence and spread of antibiotic-resistant microorganisms, including commensal staphylococci. Methods: A total of 367 oral samples were collected, from which staphylococci were isolated and identified by using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF). The antibiotic susceptibility of the isolates was determined and molecular characteristics for methicillin-resistant staphylococci was performed. Results: A total of 103 coagulase-negative staphylococci (CoNS), among them S. warneri, S. haemolyticus, S. saprophyticus, S. pasteuri, S. epidermidis, S. hominis, S. xylosus, S. equorum, S. kloosii, S. succinus, S. cohnii, and S. simulans, were confirmed by MALDI-TOF. Resistance to most tested antibiotics was statistically higher in CoNS than in S. aureus isolates (P-value < 0.05). CoNS isolates showed high resistance to penicillin (S. saprophyticus 88.9%), erythromycin (S. haemolyticus 84.6%), fusidic acid (S. saprophyticus 77.8%), co-trimoxazole (S. epidermidis 71.4%), gentamicin (S. warneri 63.8%), and tetracycline (S. saprophyticus 55.6%). Multidrug resistance was largely observed, especially among S. haemolyticus and S. saprophyticus species. Methicillin-resistance in S. haemolyticus (38.5%), S. saprophyticus (22.2%) and S. aureus (13.5%) was associated with the presence of the mecA gene and SCCmec type IV or V. Conclusion: Coagulase-negative staphylococci, especially S. haemolyticus and S. saprophyticus, seem to be a reservoir of methicillin resistance and multidrug resistance in the oral cavity.
ISSN:2000-2297
2000-2297
DOI:10.1080/20002297.2021.1983322