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360931

Scc<i>mec</i>- and <i>spa</i>-based determination of the genetic diversity of methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) clinical isolates

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Clinical microbiology

Abstract

Background and Aim: Methicillin-resistant Staphylococcus aureus (MRSA) causes infectious diseases that are clinically problematic. Methicillin resistance genes are encoded by the mecA gene on the mobile staphylococcal cassette chromosome mec (SCCmec), with SCCmec types I to V being the most prevalent. Staphylococcal protein A gene (spa) typing is a genotyping method designed for S. aureus. This study aimed to use SCCmec and spa genotyping-based methods to identify the genetic diversity of clinical MRSA isolates. Methods: Fifty MDR-MRSA isolates from tertiary hospitals in Egypt were subjected to molecular-based typing using multiplex PCR to identify SCCmec types I to V and detect spa types via spa DNA sequence analysis. Results: The predominant SCCmec types were SCCmec Ⅴ (34%) and SCCmec Ⅳ (32%). The spa sequence analysis revealed 13 definite spa types, with t084 (24.2%) being the most prevalent, followed by t688 (15.1%). Based on both genotyping methods, 20 diverse MRSA clones were identified, with the most predominant MRSA clones being CC15-SCCmecⅤ-t084 and CC15-SCCmecⅣ-t084 (12.1%). Conclusion: MRSA bacteria in Egyptian hospitals are genetically different, indicating that the strains have diverse origins. Thus, regular surveillance of MRSA diversity is required to detect emergent clones for precise epidemiological evaluation and improved procedures to prevent the spread of this superbug.

DOI

10.21608/mid.2024.288254.1934

Keywords

Methicillin resistance, <i>Staphylococcus aureus</i>, <i>spa</i>, SCC<i>mec</i>, Genotyping

Authors

First Name

Abdel-Aty

Last Name

Alfeky

MiddleName

Elsayed

Affiliation

Department of Microbiology and Immunology, Faculty of Pharmacy (For Boys), Al-Azhar University, Cairo, Egypt

Email

abdelatyalfeky2478.el@azhar.edu.eg

City

Cairo

Orcid

0000-0001-5587-2517

First Name

Mahmoud

Last Name

Tawfick

MiddleName

Mohamed

Affiliation

Department of Microbiology and Immunology, Faculty of Pharmacy (For Boys), Al-Azhar University, Cairo, Egypt, Department of Microbiology and Immunology, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt

Email

mahmoud_tawfick@azhar.edu.eg

City

Cairo

Orcid

0000-0002-9825-2198

First Name

Mohamed

Last Name

Ashour

MiddleName

Seif El-Din

Affiliation

Department of Microbiology and Immunology, Faculty of Pharmacy (For Boys), Al-Azhar University, Cairo, Egypt

Email

seifashour@hotmail.com

City

Cairo

Orcid

-

First Name

Abdel-Nasser

Last Name

El-Moghazy

MiddleName

Abbass

Affiliation

Department of Microbiology and Immunology, Faculty of Pharmacy (For Boys), Al-Azhar University, Cairo, Egypt

Email

abdelnaserawad.202@azhar.edu.eg

City

Cairo

Orcid

-

Volume

5

Article Issue

3

Related Issue

49567

Issue Date

2024-08-01

Receive Date

2024-05-09

Publish Date

2024-08-01

Page Start

1,098

Page End

1,112

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_360931.html

Detail API

https://mid.journals.ekb.eg/service?article_code=360931

Order

21

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

https://mid.journals.ekb.eg/

MainTitle

Scc<i>mec</i>- and <i>spa</i>-based determination of the genetic diversity of methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) clinical isolates

Details

Type

Article

Created At

25 Dec 2024