Related Experiment Videos

Asthmatic persons are prone to the persistence of Chlamydia pneumoniae antibodies

Mika Paldanius1, Raija Juvonen, Maija Leinonen

  • 1National Public Health Institute, Department of Child and Adolescent Health, P.O. Box 310, Aapistie 1, 90101 Oulu, Finland. mika.paldanius@ktl.fi

Diagnostic Microbiology and Infectious Disease
|June 19, 2007
PubMed

Insights

Acute Chlamydia pneumoniae infection is linked to asthma development and exacerbation in military recruits. Antibody levels indicate higher infection risk from January to June, with persistent antibodies more common in asthmatics.

Area of Science:

  • Respiratory Medicine
  • Infectious Diseases
  • Immunology

Background:

  • Chlamydia pneumoniae infections can trigger or worsen asthma.
  • Military service environments pose risks for respiratory infections like C. pneumoniae.

Purpose of the Study:

  • To investigate the association between C. pneumoniae infection and asthma in military conscripts.
  • To analyze the kinetics of C. pneumoniae antibodies during military service.

Main Methods:

  • Recruited 127 asthmatic and 391 non-asthmatic military conscripts.
  • Monitored respiratory tract infections and serum C. pneumoniae antibody levels over 6 months.
  • Assessed antibody prevalence and persistence in relation to asthma status and intake groups.

Main Results:

  • IgG antibody prevalence showed seasonal variation, decreasing in the July intake and increasing in the January intake group.
  • Asthmatic conscripts exhibited more frequent persistence of IgG and IgA antibodies.
  • Antibody titer changes occurred more rapidly than previously understood.

Conclusions:

  • Military recruits are particularly vulnerable to C. pneumoniae infections between January and June.
  • The study highlights seasonal patterns in C. pneumoniae infections within this population.
  • Persistent antibodies suggest a stronger immune response or prolonged infection in asthmatic individuals.

Related Concept Videos

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...
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...
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...
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Asthma-I: Introduction01:29

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...