金黄色葡萄球菌
毒力
微生物学
生物膜
病菌
生物
潘顿-瓦伦丁杀白血病素
国际民航组织
葡萄球菌感染
凝固酶
葡萄球菌
耐甲氧西林金黄色葡萄球菌
基因
细菌
遗传学
作者
Chi-Hsiang Lai,Min Yi Wong,Tsung-Yu Huang,Chih-Chen Kao,Yu Hui Lin,Chu-Hsueh Lu,Yao‐Kuang Huang
标识
DOI:10.3389/fcimb.2024.1367016
摘要
Introduction Staphylococcus 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. Methods Therefore 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. Results Our 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. Discussion These 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.
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