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Genetic Characterization of Methicillin Resistant and Sensitive, Vancomycin Intermediate Staphylococcus aureus Strains Isolated from Different Iranian Hospitals
Joint Authors
Ghazvini, Kiarash
Masoumi, Zahra
Naderi, Mahmood
Akbari, Mojtaba
Fazeli, Hosein
Samiee, Siamak Mirab
Azimian, Amir
Havaei, Seyed Asghar
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-20
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Background.
Global concerns have been raised due to upward trend of Vancomycin Intermediate Staphylococcus aureus (VISA) and Vancomycin Resistant Staphylococcus aureus (VRSA) reports which mean casting doubt on the absolute effectiveness of the last line of antibiotic treatment for S.
aureus, vancomycin.
Hence, epidemiological evaluation can improve global health care policies.
Methodology.
171 Isolates of Staphylococcus aureus were collected from different types of clinical samples in selected hospitals in Isfahan, Mashhad, and Tehran, Iran.
Then, they were evaluated by agar screening, disk diffusion, and MIC method to determine their resistance to vancomycin and methicillin.
The isolated VISA strains were then confirmed with genetic analysis by the evaluation of mecA and vanA genes, SCCmec, agr, and spa type, and also toxin profiles.
MLST was also performed.
Results and Conclusion.
Our data indicated that 67% of isolated S.
aureus strains were resistant to methicillin.
Furthermore, five isolates (2.9%) had intermediate resistance to vancomycin (VISA).
In contrast to usual association of VISA with MRSA strains, we found two isolates of MSSA-VISA.
Therefore, our data suggests a probable parallel growing trend of VISA towards MSSA, along with MRSA strains.
However, more samples are required to confirm these primarily data.
Moreover, genetic analysis of the isolated VISA strains revealed that these strains are endemic Asian clones.
American Psychological Association (APA)
Havaei, Seyed Asghar& Azimian, Amir& Fazeli, Hosein& Naderi, Mahmood& Ghazvini, Kiarash& Samiee, Siamak Mirab…[et al.]. 2012. Genetic Characterization of Methicillin Resistant and Sensitive, Vancomycin Intermediate Staphylococcus aureus Strains Isolated from Different Iranian Hospitals. ISRN Microbiology،Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-455198
Modern Language Association (MLA)
Havaei, Seyed Asghar…[et al.]. Genetic Characterization of Methicillin Resistant and Sensitive, Vancomycin Intermediate Staphylococcus aureus Strains Isolated from Different Iranian Hospitals. ISRN Microbiology No. 2012 (2012), pp.1-6.
https://search.emarefa.net/detail/BIM-455198
American Medical Association (AMA)
Havaei, Seyed Asghar& Azimian, Amir& Fazeli, Hosein& Naderi, Mahmood& Ghazvini, Kiarash& Samiee, Siamak Mirab…[et al.]. Genetic Characterization of Methicillin Resistant and Sensitive, Vancomycin Intermediate Staphylococcus aureus Strains Isolated from Different Iranian Hospitals. ISRN Microbiology. 2012. Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-455198
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455198