在皮肤和全身感染中Staphylococcus aureus定数感应的作用
Yuriko Yamazaki1,2, Tomoka Ito2, Masakazu Tamai2
1Cutaneous Allergy and Host Defense, Immunology Frontier Research Center, Osaka, University, Osaka, 565-0871, Japan.
Inflammation and regeneration
|March 1, 2024
概括
黄金葡萄球菌感染是一个全球性的健康问题,原因是抗生素耐药性和无声传播. 本综述探讨了定数感应如何影响其多样化的致病能力.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 传染性疾病 传染性疾病
背景情况:
- 黄金葡萄球菌是全球细菌感染的主要原因,包括皮肤,软组织,肺炎,败血症和内心炎.
- 这种机会主义的病原体无症状地殖民于人类,并且很容易传播,这给根除带来了挑战.
- 抗生素耐药性和适应多种环境的适应性是很大的问题,部分原因是辅助基因调节器 (Agr) 系统的变异.
研究的目的:
- 阐明Staphylococcus aureus各种表型背后的分子机制,从殖民到系统感染.
- 突出质量检测 (QS) 在不同环境和感染环境中调节黄金色杆菌行为的关键作用.
主要方法:
- 这项研究是一项综述,综合了现有关于黄金葡萄球菌的研究.
- 重点放在辅助基因调节器 (Agr) 系统和定数感应 (QS) 机制上.
- 分析调控S. aureus毒性和适应的分子途径.
主要成果:
- 辅助基因调节器 (Agr) 系统通过定量感应 (QS) 控制金黄色菌的毒性因子表达.
- 在某些情况下,Agr表达可能是不利的,导致Agr突变在医疗保健相关感染中出现.
- 黄金的表型多样性受到QS和其他超出农业范围的因素的影响.
结论:
- 由Agr调节的定数感应是Staphylococcus aureus引起各种感染的能力的核心.
- 除了Agr之外的因素显著影响S. aureus的病理生理学和感染结果.
- 需要进一步的研究,以便在各种临床环境中全面了解金黄色细菌.
相关概念视频
Bacterial Signaling
32.1K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
32.1K
Skin Diseases and Disorders
3.8K
Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
3.8K
Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
Yeast Signaling
14.6K
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
14.6K


