[Mycoplasma pneumoniae, community-acquired pneumonia and asthma]

D Gendrel1, S Biscardi, E Marc

  • 1Hôpital Saint-Vincent-de-Paul, assistance publique-hôpitaux de Paris, 82, avenue Denfert-Rochereau, 75014 Paris, France. dominique.gendrel@svp.ap-hop-paris.fr

Insights

Mycoplasma pneumoniae infections are common in children, causing pneumonia and potentially triggering or worsening asthma. Early detection and treatment are crucial to prevent severe respiratory issues and asthma exacerbations.

Area of Science:

  • * Medical Microbiology: Focuses on Mycoplasma pneumoniae, an intracellular bacterial pathogen lacking a cell wall.
  • * Pediatric Pulmonology: Investigates respiratory infections and asthma exacerbations in children.

Context:

  • * Mycoplasma pneumoniae is a leading cause of community-acquired pneumonia in children over five.
  • * Infections can range from asymptomatic to severe respiratory illness, including bronchitis and pneumonia.
  • * This pathogen can trigger asthma exacerbations, particularly in high-risk children.

Purpose:

  • * To investigate the role of Mycoplasma pneumoniae in severe asthma exacerbations in hospitalized children.
  • * To determine the prevalence of Mycoplasma infection in children experiencing severe asthma episodes.
  • * To highlight the significance of Mycoplasma pneumoniae as a trigger for asthma inception and exacerbation.

Summary:

  • * A survey of hospitalized children with severe asthma exacerbation revealed Mycoplasma infection in 26% of those with prior asthma history and 50% of new-onset asthma cases.
  • * Atypical Mycoplasma infections were associated with recurrent asthma exacerbations within one month.
  • * Mycoplasma pneumoniae is identified as a significant factor in pediatric respiratory infections and asthma development.

Impact:

  • * Emphasizes the need for active screening and treatment of Mycoplasma infections in children presenting with respiratory symptoms or asthma exacerbations.
  • * Suggests Mycoplasma pneumoniae should be considered a critical factor in the pathogenesis of pediatric asthma.
  • * Highlights potential for improved patient outcomes through targeted antimicrobial therapy for Mycoplasma infections.

Related Concept Videos

Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
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...
Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Microbiota of the Respiratory Tract01:29

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...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...