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Exploration of agr types, virulence−associated genes, and biofilm formation ability in Staphylococcus aureus isolates from hemodialysis patients with vascular access infections

Authors :
Chi-Hsiang Lai
Min Yi Wong
Tsung-Yu Huang
Chih-Chen Kao
Yu-Hui Lin
Chu-Hsueh Lu
Yao-Kuang Huang
Source :
Frontiers in Cellular and Infection Microbiology, Vol 14 (2024)
Publication Year :
2024
Publisher :
Frontiers Media S.A., 2024.

Abstract

IntroductionStaphylococcus aureus, is a pathogen commonly encountered in both community and hospital settings. Patients receiving hemodialysis treatment face an elevated risk of vascular access infections (VAIs) particularly Staphylococcus aureus, infection. This heightened risk is attributed to the characteristics of Staphylococcus aureus, , enabling it to adhere to suitable surfaces and form biofilms, thereby rendering it resistant to external interventions and complicating treatment efforts.MethodsTherefore this study utilized PCR and microtiter dish biofilm formation assay to determine the difference in the virulence genes and biofilm formation among in our study collected of 103 Staphylococcus aureus, isolates from hemodialysis patients utilizing arteriovenous grafts (AVGs), tunneled cuffed catheters (TCCs), and arteriovenous fistulas (AVFs) during November 2013 to December 2021.ResultsOur findings revealed that both MRSA and MSSA isolates exhibited strong biofilm production capabilities. Additionally, we confirmed the presence of agr types and virulence genes through PCR analysis. The majority of the collected isolates were identified as agr type I. However, agr type II isolates displayed a higher average number of virulence genes, with MRSA isolates exhibiting a variety of virulence genes. Notably, combinations of biofilm-associated genes, such as eno−clfA−clfB−fib−icaA−icaD and eno−clfA−clfB−fib−fnbB−icaA−icaD, were prevalent among Staphylococcus aureus, isolates obtained from vascular access infections.DiscussionThese insights contribute to a better understanding of the molecular characteristics associated with Staphylococcus aureus, infections in hemodialysis patients and provided more targeted and effective treatment approaches.

Details

Language :
English
ISSN :
22352988
Volume :
14
Database :
Directory of Open Access Journals
Journal :
Frontiers in Cellular and Infection Microbiology
Publication Type :
Academic Journal
Accession number :
edsdoj.9b236591b4442a4b2c04329a0ad9419
Document Type :
article
Full Text :
https://doi.org/10.3389/fcimb.2024.1367016