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184693

Characterization of <i>Enterococci</i> isolated from intensive care unit (ICU); Distribution of virulence markers, virulence genes and antibiotic resistance pattern

Article

Last updated: 22 Jan 2023

Subjects

-

Tags

Medical bacteriology

Abstract

Background:  Enterococci are considered as the third most common cause of nosocomial infections. Enterococci acquire antibiotic resistance by gene transfer. Virulence factors facilitate colonization and evasion from the immune system.  Our objectives were to evaluate the distribution of virulence markers and genes among Enterococci isolated from intensive care unit (ICU) in Sohag University Hospital and to determine the antibiotic resistance pattern of enterococci. Methods: Virulence markers were detected by gelatinase test, caseinase test, slime layer production and modified micro titer plate method. PCR is used for identification of enterococcal species and detection of virulence genes as gel E, asa 1, esp, hyl and cyl A.  Antibiotic sensitivity tests were performed by disc diffusion method by using ampicillin, vancomycin, tetracycline, erythromycin and teichoplanin. Vancomycin minimum inhibitory concentrations (MICs) were measured by E-test. Results: Vancomycin resistant Enterococci (VRE) was detected in 38.4 % of isolates.  There was no significant difference in the distribution of all virulence markers between E. faecalis and E. faecium. The hyl gene was more commonly detected in E. faecalis (p-value= 0.01). Enterococci isolated from cases of surgical site infection (SSI) , pneumonia and sepsis contain multiple virulence genes with the highest percentage. Vancomycin  resistance was higher in gel E positive and asa1 positive E. faecalis than negative E. faecalis. Conclusion:  Multi-drug resistance (MDR) was detected in 57.6% of Enterococci. E. faecalis and E. faecium have the same degree of virulence. An association was noted between the esp < /em> & asa 1 genes and biofilm formation.

DOI

10.21608/mid.2021.76391.1158

Keywords

E. faecium, E. faecalis, Vancomyicin resistant enterococci, Virulence markers, Virulence genes

Authors

First Name

nahed

Last Name

fahmy

MiddleName

-

Affiliation

department of medical microbiology&amp; immunology-faculty of medicine- sohag university- Sohag- Egypt

Email

nanafahmy_783@yahoo.com

City

sohag

Orcid

0000-0001-9688-635X

First Name

Abdelhady

Last Name

Abdel-Gawad

MiddleName

Ragab

Affiliation

Department of clinical and chemical pathology, Faculty of Medicine, Sohag University, Egypt .

Email

dr_hady7777@yahoo.com

City

sohag

Orcid

-

First Name

Ghada

Last Name

Rezk

MiddleName

Abd el-Gaber

Affiliation

Department of Anesthesia and Intensive Care, Faculty of Medicine, Sohag University, Egypt.

Email

drghadagaber@yahoo.com

City

sohag

Orcid

-

First Name

Ekram

Last Name

Mahmoud

MiddleName

Abdel-Rahman

Affiliation

medical microbiology &amp; immunology department, Faculty of Medicine, Sohag University, Egypt

Email

dr.ekram.ar@gmail.com

City

sohag

Orcid

-

Volume

2

Article Issue

4

Related Issue

28168

Issue Date

2021-11-01

Receive Date

2021-05-07

Publish Date

2021-11-01

Page Start

725

Page End

735

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_184693.html

Detail API

https://mid.journals.ekb.eg/service?article_code=184693

Order

16

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

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

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023