聚合细菌actinomycetemcomitans:从口腔腔到心脏门
Jasminka Talapko1, Martina Juzbašić1, Tomislav Meštrović2,3,4
1Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia.
Microorganisms
|July 27, 2024
概括
聚合菌 (Aggregatibacter actinomycetemcomitans) 是一种与牙周炎和类风湿性关节炎有关的细菌. 它具有众多的致病因子,有助于系统性疾病和致癌潜力,有各种治疗选择.
科学领域:
- 口腔微生物学 口腔微生物学
- 细菌病原体的发生.
- 系统性疾病病因 系统性疾病病因学
背景情况:
- 聚聚细菌actinomycetemcomitans (A. actinomycetecomitans) 是一种格拉姆阴性口腔细菌.
- 它的聚合性质和表面蛋白质有助于其粘附于口腔表面.
- A. actinomycetecomitans与牙周炎,类风湿性关节炎,内心炎和有关.
研究的目的:
- 为提供A. actinomycetecomitans病毒性因素的概述.
- 探索其与全身性疾病和瘤潜在的关联.
- 讨论A. actinomycetecomitans感染的治疗选择.
主要方法:
- 关于A. actinomycetemcomitans. 的科学文献的审查.
- 对毒性因素及其在病原发生中的作用的分析.
- 检查细菌和全身疾病之间的联系.
主要成果:
- A. actinomycetemcomitans具有众多的毒性因素,包括白血素A (LtxA),粘合素和影响免疫反应的因素.
- LtxA与牙周炎和类风湿性关节炎有关.
- 细菌的脂多糖会诱导促炎性细胞因子分泌 (IL-1,IL-1β,TNF).
结论:
- A. actinomycetemcomitans的毒性因素有助于其在牙周病和全身感染中的作用.
- 这种细菌具有致癌潜力.
- 了解这些因素对于制定有效的治疗策略至关重要.
相关概念视频
Endocarditis I: Introduction
Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
The Skin Microbiota
The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
The Oral Microbiota
The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
Development of the Oral Microbiota
The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
Microbiota of the Respiratory Tract
The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...


