دورية أكاديمية
Incidence of Virulence Determinants Among Enterococcal Clinical Isolates in Egypt and Its Association with Biofilm Formation.
| العنوان: | Incidence of Virulence Determinants Among Enterococcal Clinical Isolates in Egypt and Its Association with Biofilm Formation. |
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| المؤلفون: | Aladarose BE; Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt., Said HS; Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt., Abdelmegeed ES; Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt. |
| المصدر: | Microbial drug resistance (Larchmont, N.Y.) [Microb Drug Resist] 2019 Jul/Aug; Vol. 25 (6), pp. 880-889. Date of Electronic Publication: 2019 Feb 27. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Mary Ann Liebert Country of Publication: United States NLM ID: 9508567 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1931-8448 (Electronic) Linking ISSN: 10766294 NLM ISO Abbreviation: Microb Drug Resist Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Larchmont, N.Y. : Mary Ann Liebert, c1995- |
| مواضيع طبية MeSH: | Enterococcus/*genetics , Enterococcus/*isolation & purification , Virulence/*genetics , Virulence Factors/*genetics, Anti-Bacterial Agents/pharmacology ; Bacterial Proteins/genetics ; Biofilms/drug effects ; Egypt ; Enterococcus/drug effects ; Gelatinases/genetics ; Gram-Positive Bacterial Infections/drug therapy ; Gram-Positive Bacterial Infections/microbiology ; Hemolysin Proteins/genetics ; Humans ; Incidence ; Microbial Sensitivity Tests/methods |
| مستخلص: | Background: Although Enterococci compromise an essential part of normal gut microbiota of both animals and humans, they have emerged as a leading opportunistic pathogen causing infections. The pathogenesis of enterococci is attributed to an array of virulence determinants. Objectives: This study aims to explore the prevalence and characteristics of enterococcal clinical isolates collected from Mansoura University Hospitals, Egypt, assess their ability to form biofilm, and the correlation with virulence determinants and antimicrobial resistance. Materials and Methods: A total of 70 Enterococcal clinical isolates were collected from different clinical sources between June and December 2016. Biofilm formation capacity was assessed, and characterization of virulence factors and antibiotic susceptibility was performed. Clonal relatedness between isolates was assessed using enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) approach. Results and Conclusion: The molecular analysis demonstrated high genetic diversity among enterococcal clinical isolates. The gelE was the most frequently detected gene (91.4%), followed by asa1 (70%), esp (65.7%), and cylA (17.1%), while hyl was not detected in any isolate. Gelatinase activity was detected in 35.7%, while hemolysin and lipase activity was detected in 12.9% and 78.5%, respectively. Most of the enterococcal isolates were biofilm producers, of which 67.1% were strong/moderate biofilm producers. All linezolid-resistant isolates exhibited strong/moderate biofilm formation capacity. Strong/moderate biofilm formation was more frequently observed among esp -positive ( esp+ ) and gelatinase nonproducing (gelatinase-) enterococcal isolates. Multiple regression analysis denoted that esp (odds ratio [OR] 5.371, p = 0.003) and gelatinase production (OR 0.264, p = 0.015) were associated with strong/moderate biofilm formation capacity. These findings suggest that esp gene positivity and gelatinase production may affect biofilm formation capacity among enterococcal clinical isolates. |
| فهرسة مساهمة: | Keywords: ; ERIC typing; biofilm formation; enterococci; virulence factors |
| المشرفين على المادة: | 0 (Anti-Bacterial Agents) 0 (Bacterial Proteins) 0 (Hemolysin Proteins) 0 (Virulence Factors) EC 3.4.24.- (Gelatinases) |
| تواريخ الأحداث: | Date Created: 20190228 Date Completed: 20191225 Latest Revision: 20191225 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1089/mdr.2018.0320 |
| PMID: | 30811265 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1931-8448 |
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| DOI: | 10.1089/mdr.2018.0320 |