Pathogenesis of pleural infection

Chadi A Hage1, Kamal abdul-Mohammed, Veena B Antony

  • 1Infectious Diseases and Pulmonary Critical Care Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA.

Respirology (Carlton, Vic.)
|February 26, 2004
PubMed

Insights

Pleural infections involve a complex immune response where mesothelial cells act as the first line of defense. Understanding microbial virulence and host immunity is key to managing these infections.

Area of Science:

  • Immunology
  • Microbiology
  • Pulmonology

Background:

  • Pleural infections trigger a robust inflammatory response with white blood cell and protein exudation.
  • The outcome of pleural infections depends on the balance between microbial virulence and host immune reactions.
  • Parapneumonic processes, arising from lung infections, are a common cause of pleural infection.

Purpose of the Study:

  • To review microbial virulence factors in pleural infections.
  • To elucidate the role of pleural mesothelial cells in host defense.
  • To explore the interplay between innate and adaptive immunity in the pleura.

Main Methods:

  • Literature review of studies on pleural infections.
  • Analysis of immune cell functions in the pleural space.
  • Examination of microbial-host interactions in pleural disease.

Main Results:

  • Pleural mesothelial cells are crucial in recognizing pathogens and initiating immune responses.
  • Both innate and adaptive immunity contribute to controlling pleural infections.
  • Virulence factors of microorganisms are critical for establishing infection.

Conclusions:

  • Pleural mesothelial cells bridge innate and adaptive immunity, playing a central role in host defense.
  • Effective management of pleural infections requires understanding both pathogen virulence and host immune capacity.
  • Further research into the mechanisms of pleural immunity can inform therapeutic strategies.

Related Concept Videos

Pleural Effusion I: Introduction01:25

Pleural Effusion I: Introduction

Pleural effusion is an abnormal fluid accumulation in the pleural cavity, a narrow space between the lungs and the chest wall. It is not a disease per se but rather a symptom or indication of an underlying disease. In normal circumstances, this space contains a small amount of fluid (5 to 15 mL), a lubricant facilitating the non-frictional movement of the pleural surfaces.
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's criteria,...
Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
Pleura of the Lungs01:13

Pleura of the Lungs

The lungs are nestled in a cavity, shielded by the pleura. The pleura, a form of serous membrane, wraps around each lung. This membrane arrangement consists of two layers: the visceral and parietal pleurae. The visceral pleura lines the surface of the lungIn contrast, the parietal pleura is the outer layer and contacts to the thoracic wall, the mediastinum, and the diaphragm. The hilum is the point of connection between the visceral and parietal layers. The space between the parietal and...
Pleural Disorders: Types and Brief Description01:30

Pleural Disorders: Types and Brief Description

The pleura is a vital part of the respiratory system. It's a double-layered membrane surrounding the lungs and lining the chest cavity. The two layers of the pleura are:
Pneumonia I: Introduction01:29

Pneumonia I: Introduction

Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...
Pneumonia I: Introduction01:30

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...