李斯特里病是一种病
Olivier Disson1, Caroline Charlier1,2,3, Philippe Pérot1,2
1Institut Pasteur, Université Paris Cité, Inserm U1117, Biology of Infection Unit, Paris, France.
Nature reviews. Disease primers
|October 2, 2025
概括
李斯特菌病是一种严重的由Listeria monocytogenes引起的细菌感染,尤其对孕妇和免疫受损者构成风险. 需要对其全球影响和传播进行进一步的研究,以改善患者的治疗结果.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 食品安全 食品安全
背景情况:
- 病是一种严重的食物传播疾病,由Listeria monocytogenes引起,Listeria monocytogenes是一种在各种环境和食物中发现的多功能细菌.
- 它可以引起轻微的胃肠炎或严重的侵入性感染,包括母胎感染,败血症和神经化症,特别是在脆弱人群中.
研究的目的:
- 审查目前对Listeria monocytogenes致病性和李斯特菌病的理解.
- 突出有关全球负担,人口动态,传播途径和宿主因素的知识差距.
- 确定未来研究领域,以改善诊断和治疗策略.
主要方法:
- 基因组研究已经确定了Listeria monocytogenes的不同的血统.
- 病原性机制包括抵抗宿主防御,细胞内生存和穿越屏障.
- 诊断依赖于临床症状和微生物学测试,如细菌培养或DNA检测.
主要成果:
- 李斯特菌单细胞菌表现出显著的毒性,其中I系菌株特别强大.
- 细菌拥有多种策略来逃避宿主防御并建立感染.
- 目前的治疗方法涉及特定的抗生素,但没有发现显著的获得性耐药性.
结论:
- 菌病仍然是一个重要的公共卫生问题,特别是在风险群体中.
- 进一步的研究对于阐明全球负担,传播动态和与宿主相关的因素至关重要.
- 识别新的风险因素和治疗方案对于改善患者的治疗结果和有效管理李斯特菌病至关重要.
相关概念视频
01:30Bacterial Phylum Spirochaetes
594
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
594
01:28Methods of Classification and Identification
1.0K
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
1.0K
01:28Fungal Phylum Microsporidia
425
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
425
00:43Lysogenic Cycle of Bacteriophages
67.3K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
67.3K
01:30Lytic Cycle of Bacteriophages
77.4K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
77.4K
01:31Pulmonary Tuberculosis III
937
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
937