相关实验视频

Updated: May 17, 2025

Methodology for Sputum Induction and Laboratory Processing

Methodology for Sputum Induction and Laboratory Processing

Published on: December 17, 2017

人体唾液微生物组合和唾液炎症细胞简介在受控的木烟暴露下发生变化,作为野火烟雾模型

Catalina Cobos-Uribe¹, Radhika Dhingra^2,3, Martha A Almond⁴

¹The University of North Carolina at Chapel Hill, Curriculum in Toxicology & Environmental Medicine, Chapel Hill, North Carolina, United States.

American journal of respiratory and critical care medicine

|May 16, 2025

概括

接触木烟会改变呼吸道微生物组合,特别是少量的细菌. 这些变化与改变的唾液炎症细胞相关,为野火烟雾提供了新的见解.

科学领域:

环境健康环境健康
微生物学微生物学
免疫学免疫学免疫学

背景情况:

野火事件和木烟暴露在全球范围内正在增加.
木烟与不良的呼吸道疾病有关,但机制尚不清楚.
以前的研究集中在免疫反应上,忽视了呼吸道微生物组的作用.

研究的目的:

为了研究受控木烟暴露对人类呼吸道微生物群的影响.
在暴露后检查液微生物组合和炎症细胞的变化.
探索呼吸道微生物组变化与免疫媒介之间的关联.

主要方法:

在健康志愿者 (N=54) 中控制木烟暴露 (500μg/m3 2小时).
在暴露后的基线,6小时和24小时内采集诱导唾液样本.
使用负二项混合模型分析微生物组合,免疫媒介和细胞差异.

主要成果:

唾液微生物群的多样性保持不变,但成分发生了变化,影响了诸如Fretibacterium和Selenomonas等少量细菌.
在暴露后24小时观察到唾液巨细胞的显著减少.
在特定细菌种群和巨细胞之间发现了显著的关联,包括与*Fretibacterium*的负面关联.

结论:

吸入木烟暴露会改变呼吸道微生物群,特别是少量细菌.
这些微生物组的变化与唾液炎症细胞的变化有关.
这些发现强调了宿主微生物群相互作用在对环境暴露的呼吸反应中的重要性.

关键词:

微生物群中的微生物群唾液是什么意思唾液是什么意思木制烟雾:木制烟雾是指木制烟雾.森林大火野火森林大火

更多相关视频

Impact Assessment of Repeated Exposure of Organotypic 3D Bronchial and Nasal Tissue Culture Models to Whole Cigarette Smoke

Impact Assessment of Repeated Exposure of Organotypic 3D Bronchial and Nasal Tissue Culture Models to Whole Cigarette Smoke

Published on: February 12, 2015

Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters

Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters

Published on: July 12, 2024

相关概念视频

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation

Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture

Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture

Sputum studies are a critical part of diagnosing and treating numerous respiratory conditions. These studies involve obtaining sputum samples for analysis to identify pathogenic organisms and assess the presence of abnormal cells indicative of malignant conditions. This lesson will delve into three fundamental sputum studies: Gram Stain, Cytology, and Acid-fast Smear and Culture.
Gram Stain
The Gram Stain is an integral part of sputum studies. It involves the staining of sputum, which permits...