在Staphylococcus aureus隔离物中粘附和生物膜相关基因的流行率和比较分析:一个网络元分析
Aram Sharifi1, Peyman Mahmoudi1, Keyvan Sobhani1
1Department of Animal Science, Faculty of Agriculture, University of Kurdistan, Sanandaj, Kurdistan, Iran.
Microbiology and immunology
|December 5, 2024
概括
这项研究分析了Staphylococcus aureus的粘附和生物膜基因,发现clfB,eno和icaD的高度流行. 对于bap和bbp基因,发现患病率较低,基于隔离源的变异.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 遗传学 是一个遗传学.
背景情况:
- 黄金葡萄球菌 (Staphylococcus aureus) 是一个重要的病原体,导致各种感染.
- 病毒性因素,包括粘附和生物膜相关的蛋白质,有助于S. aureus的致病性.
- 了解基因流行是对抗生物膜相关污染的关键.
研究的目的:
- 为了评估附着性和生物膜相关基因在S. aureus分离物的流行率.
- 调查孤立源对这些基因发生的影响.
- 为制定针对黄金菌感染的策略提供见解.
主要方法:
- 进行了全面的网络元分析.
- 通过对多个数据库进行系统搜索,发现了53项相关研究.
- 确定了基因的患病率和双重共发生;通过隔离源进行了子组分析.
主要成果:
- 对clfB (85.4%),eno (81.1%) 和 icaD (77%) 观察到的患病率最高.
- bap (6.7%) 和bbp (18.7%) 基因的流行率最低.
- 与人类和食品隔离物相比,icaC和icaB基因在动物隔离物中不太常见. 对于sasG,bbp,bap,eno和fib基因的数据有限.
结论:
- 在S. aureus中,粘附和生物膜相关基因的流行率有很大的不同.
- clfB,eno 和 icaD 的发病率很高,而 bap 和 bbp 的发病率较低.
- 对具有有限可用的数据的基因需要进一步研究,以了解它们的流行率和病原发生中的作用.
更多相关视频
相关概念视频
Biofilms
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
Staphylococcal Skin Infections
Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Mechanism of Antibiotic Resistance in MRSA
Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...


