Genotypic study of resistant Staphylococcus aureus strains To methicillin isolated from patients in Shahrekord

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Hajimohammadi Sameh; MOMTAZ HASSAN; Tajbakhsh Elahe

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Journal Paper

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Journal: Medical Journal of Mashhad University of Medical Sciences Year:2022 | Volume:65 | Issue:3 Page(s): 1341-1355

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Title

Genotypic study of resistant Staphylococcus aureus strains To methicillin isolated from patients in Shahrekord

Author(s)

Hajimohammadi Sameh | MOMTAZ HASSAN | Tajbakhsh Elahe | Issue Writer Certificate

Keywords

Staphylococcus aureus

Genotyping

Resistance genes

Abstract

Introduction: Staphylococcus aureus are the most common cause of infection in hospital. This study was performed to determine the frequency of Staphylococcus aureus isolated from patients' infections and to determine the pattern of antibiotic susceptibility in patients referred to Shahrekord hospitals. Materials and Methods: This descriptive cross-sectional study was performed on 166 patients with infections referred to Shahrekord hospitals during 1400. Sterile swabs were used to collect samples of infections. Isolation of Staphylococcus aureus was confirmed using biochemical tests such as gram staining, catalase, coagulase, mannitol DNase tests and glucose fermentation. Antibiotic susceptibility model was performed by disk diffusion method based on CLSI model. Isolated isolates were analyzed by PCR for the presence of mecA target gene and confirmation of SCCmec typing. Results: 45 patients (27. 10%) out of 166 patients had a positive culture of Staphylococcus aureus. In this study, no significant difference was observed between age and sex (P> 0. 05). 40 isolates of Staphylococcus aureus (88. 8%) were resistant to oxacillin and 36 isolates (80%) were resistant to cefoxitin and 45 isolates (100%) were phenotypically MRSA. These isolates were by molecular method (presence of mecA gene carrying Molecular method (PCR) was confirmed. 100% of patients with Staphylococcus aureus infection were methicillin resistant and 95. 5% were MDR. Patients who had taken antibiotics in the past year had twice as many infections as Staphylococcus aureus. Of 100 methicillin-resistant isolates (isolates containing mecA gene), type V was detected in 53. 33% of isolates. Also, TypeIII and Typr IVa were detected in 26. 66% and 17. 77% of isolates, respectively. Conclusion: More than half of the staphylococcal infections in this study were caused by Staphylococcus aureus and more than 48% of the isolates were resistant to methicillin. The highest resistance to penicillin was observed. The high prevalence of Staphylococcus aureus is a serious danger to society.

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APA: Copy

Hajimohammadi, Sameh, MOMTAZ, HASSAN, & Tajbakhsh, Elahe. (2022). Genotypic study of resistant Staphylococcus aureus strains To methicillin isolated from patients in Shahrekord. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, 65(3 ), 1341-1355. SID. https://sid.ir/paper/1126773/en

Vancouver: Copy

Hajimohammadi Sameh, MOMTAZ HASSAN, Tajbakhsh Elahe. Genotypic study of resistant Staphylococcus aureus strains To methicillin isolated from patients in Shahrekord. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2022;65(3 ):1341-1355. Available from: https://sid.ir/paper/1126773/en

IEEE: Copy

Sameh Hajimohammadi, HASSAN MOMTAZ, and Elahe Tajbakhsh, “Genotypic study of resistant Staphylococcus aureus strains To methicillin isolated from patients in Shahrekord,” MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, vol. 65, no. 3 , pp. 1341–1355, 2022, [Online]. Available: https://sid.ir/paper/1126773/en

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