Beta
312430

Evaluation of loop mediated isothermal amplification (LAMP) assay for rapid detection of methicillin resistant <i>Staphylococcus aureus</i> in Tanta University Hospitals in Egypt

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Molecular microbiology

Abstract

Background: Methicillin-resistant Staphylococcus aureus (MRSA) has a long history of being a common source of healthcare-associated infections (HAIs). Early patient treatment and effective infection control strategies depend on quick MRSA diagnosis. Aim of study: This study aimed to assess the sensitivity and specificity of loop mediated isothermal amplification (LAMP) assay for rapid detection of MRSA. Methods: A total of 200 samples from patients with HAIs have been included in this study. Each sample underwent bacteriological examination. Isolation and identification of Staphylococcus aureus (S. aureus) were done by traditional cultural methods. Methicillin susceptibility was assessed phenotypically and genotypically. The phenotypic methods included cefoxitin disc diffusion and MIC detection by oxacillin E.test, while the genotypic methods included both Real-time PCR and LAMP technique for femB and mecA genes detection. Results: Out of 200 tested samples, 55 were S. aureus by conventional phenotypic methods. Both cefoxitin disc diffusion and oxacillin E.test were able to identify methicillin resistance in (78.2%) of S. aureus isolates. femB gene was found in all S. aureus isolates 55 (100%) while mecA gene was found in 44(80%) of the isolates by both Real-time PCR and LAMP. Compared to the gold standard PCR, LAMP had sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of (100%) each. Conclusion: Combined detection of mecA and femB genes is reliable for diagnosis of MRSA. LAMP is a rapid, simple, sensitive, specific and relatively less costly assay for MRSA identification. LAMP can be considered a good substitute to PCR for MRSA detection.

DOI

10.21608/mid.2023.223908.1565

Keywords

MRSA, LAMP, PCR, mecA, femB

Authors

First Name

Manar

Last Name

Emara

MiddleName

Mahmoud

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

manaremara@med.tanta.edu.eg

City

Tanta

Orcid

-

First Name

Naglaa

Last Name

Ghoname

MiddleName

Fawzy

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

naglaa.ghonaim@med.tanta.edu.eg

City

-

Orcid

-

First Name

Mona

Last Name

Ramadan

MiddleName

Osama

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

mona.abouramadan@med.tanta.edu.eg

City

Tanta

Orcid

-

First Name

Lobna

Last Name

Abo Elnasr

MiddleName

Mohamed

Affiliation

Anesthesia and Surgical Intensive Care Departments, Faculty of Medicine, Tanta University, Egypt.

Email

drlobna99@gmail.com

City

Tanta

Orcid

-

First Name

Sara

Last Name

Samy

MiddleName

Mina

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

sara.meseha@med.tanta.edu.eg

City

Tanta

Orcid

-

Volume

4

Article Issue

4

Related Issue

43799

Issue Date

2023-11-01

Receive Date

2023-07-19

Publish Date

2023-11-01

Page Start

1,219

Page End

1,231

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_312430.html

Detail API

https://mid.journals.ekb.eg/service?article_code=312430

Order

20

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

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

MainTitle

Evaluation of loop mediated isothermal amplification (LAMP) assay for rapid detection of methicillin resistant <i>Staphylococcus aureus</i> in Tanta University Hospitals in Egypt

Details

Type

Article

Created At

25 Dec 2024