Related Experiment Video
Updated: Jun 6, 2025
09:52
A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites
Published on: August 8, 2014
17.5K
Long COVID: a consequence of chronic post-infectious inflammation!
Joseph M Blondeau1,2,3
1Division of Clinical Microbiology, Royal University Hospital and Saskatchewan Health Authority, Saskatoon, SK, Canada.
Expert Review of Respiratory Medicine
|December 3, 2024
Summary
Long COVID, a persistent condition after COVID-19 recovery, presents diverse symptoms. Its causes, potentially linked to inflammation or viral persistence, are still under investigation.
Area of Science:
- Infectious Diseases
- Immunology
- Pathology
Background:
- Long COVID is defined by persistent symptoms following acute COVID-19 infection.
- The condition manifests with a wide range of symptoms (over 200 described) and varying severity.
- Understanding the underlying mechanisms of long COVID is crucial for patient management.
Purpose of the Study:
- To provide a concise update on the current understanding of long COVID.
- To explore potential causes and long-term consequences of persistent symptoms post-COVID-19.
- To highlight key areas of ongoing research and clinical inquiry.
Main Methods:
- This manuscript is a review and update based on current scientific thinking.
- It synthesizes existing knowledge on long COVID from various research perspectives.
- Expert opinion is integrated to discuss potential etiological factors.
Main Results:
- Long COVID involves a complex interplay of factors, including persistent inflammation or viral presence.
- The variability in patient experience suggests a multifactorial etiology involving viral strain and host factors.
- Distinguishing between direct organ damage and chronic inflammatory processes is an active area of research.
Conclusions:
- The exact causes of long COVID remain uncertain, likely involving a combination of viral and host-specific factors.
- Further research is needed to elucidate the precise mechanisms driving long COVID sequelae.
- Genetic predisposition and host immunity likely play significant roles in disease outcome.
Related Concept Videos
01:25Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
2.7K
Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
2.7K
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
2.7K
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
Chronic Inflammation
2.7K
01:22Chronic Obstructive Pulmonary Disease
1.2K
COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
1.2K
01:26Stages of Infection
55.6K
Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
55.6K
01:23Chronic Pharyngitis
1.1K
Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
1.1K
01:29Pneumonia II: Pathophysiology
216
The pathophysiology of pneumonia involves the following steps:
216