概括
表面桃体培养可能会错过无氧细菌,包括产生β-乳糖酶的病原体,这对于理解复发性桃体炎至关重要. 核心培养对于全面的微生物评估至关重要.
科学领域:
- 微生物学 微生物学
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 传染性疾病 传染性疾病
背景情况:
- 复发性桃体炎涉及桃体组织内的复杂微生物群落.
- 了解包括无氧生物在内的全谱微生物对于有效治疗至关重要.
研究的目的:
- 为了比较从表面与核心桃体样本中分离出来的微生物菌群.
- 评估从复发性桃体炎中分离的β-乳糖酶生产的流行率.
主要方法:
- 从23名患有复发性桃体炎的儿童的桃体表面和核心样本中培养了有氧和无氧细菌.
- 鉴定了分离物,并评估了β-乳糖酶的产生.
主要成果:
- 所有患者中均有混合的有氧和无氧植物群.
- 厌氧细菌如 Bacteroides sp. 这样的细菌. 和 Fusobacterium nucleatum 是很常见的.
- 在83%的患者中观察到β-乳酸酶的产生.
- 厌氧细菌更频繁地从核心标本中分离出来 (33%与10%的有氧细菌相比).
结论:
- 对于无氧细菌,表面和核心桃体培养物之间存在显著的差异.
- 表面培养可能不会准确地反映复发性桃体炎的核心微生物病原体.
- 核心培养是检测beta-lactamase产生的生物体所必需的.
相关概念视频
Acute Pharyngitis
Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Chronic Pharyngitis
Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Tonsillitis I: Introduction
Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat.
Etiology
Three primary contributing factors have been identified.
Etiology
Three primary contributing factors have been identified.
Tonsillitis II: Management
This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity.
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...
Streptococcal Pharyngitis
Streptococcal pharyngitis, commonly known as “strep throat,” is an acute infection of the oropharyngeal tissues caused by the Gram‑positive Group A Streptococcus (Streptococcus pyogenes). Transmission occurs primarily through respiratory droplets expelled during coughing, sneezing, or talking.Mechanisms of Host Entry and Immune EvasionUpon entering the host, S. pyogenes adheres to the mucosal epithelial cells of the pharynx via surface proteins, notably lipoteichoic acid and the antiphagocytic...


