相关实验视频

Updated: Jan 7, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Published on: February 23, 2014

缺少S100A8会损害肺部防护性免疫力,从而抵御肺炎链球菌

Lena Ostermann¹, Benjamin Seeliger^2,3, Konrad Peukert⁴

¹Division of Experimental Pneumology, Hannover Medical School, Hannover, Lower Saxony, Germany.

The Journal of infectious diseases

|December 28, 2025

概括

S100A8蛋白对于肺部抗菌免疫力对抗Streptococcus pneumoniae至关重要. 它的缺失导致严重的肺炎和小鼠的早期死亡,突出其保护作用.

科学领域:

免疫学免疫学免疫学
肺部病理学肺部病理学
微生物学微生物学

背景情况:

S100A9对肺部抗菌免疫对肺炎球菌性肺炎至关重要.
对于S100A8在肺部抗菌免疫中的特定作用尚不清楚.

研究的目的:

研究S100A8在肺部抗菌免疫中对Streptococcus pneumoniae的作用.
探索S100A8在肺炎中的作用的潜在机制.

主要方法:

在使用ELISA的患者BAL液体中量化S100A8.
使用了感染S. pneumoniae.的野生类型和S100A8淘汰赛小鼠.
分析了细菌清除,疾病进展,肺病理和白细胞招募.

主要成果:

在细菌性肺炎患者中,S100A8水平升高.
在小鼠中,S100A8缺乏增加了细菌负载和死亡率.
缺少S100A8导致中性粒细胞弹性酶介导的表面活性蛋白A和D的降解.
再组合S100A8/A9疗法拯救了S100A8淘汰赛小鼠.

结论:

在小鼠中,S100A8删除会损害对S. pneumoniae的肺免疫力.
S100A8/S100A9复杂分析可以区分细菌和病毒性肺炎.

关键词:

肺炎链球菌的肺炎链球菌.格拉姆阳性细菌是什么?在S100蛋白质中.报警器的内置生物标志物生物标志物肺肺肺肺肺肺肺肺肺中性粒细胞弹性酶.中性粒细胞中性粒细胞.肺炎是一种肺炎.

更多相关视频

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling

Published on: April 7, 2015

A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness

A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness

Published on: September 28, 2022

相关概念视频

Pneumonia II: Pathophysiology

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:

Pneumonia III: Complications and Assessment

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:

Sputum Studies II: Culture and Sensitivity

Sputum Studies II: Culture and Sensitivity

Description
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...

Pneumonia I: Introduction

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...