Related Experiment Video
Updated: Jun 9, 2026

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
[Human metapneumovirus]
Eva Stepánová1, Pavel Zák, Vlasta Stepánová
12nd Department of Medicine, Clinical Hematology, University Hospital Hradec Králové, Hradec Králové, Czech Republic. stepaeva@fnhk.cz
Abstract:
Respiratory viral infections are the most significant cause of increased mortality and morbidity especially in immunocompromised people. These infections are increasingly recognized as being the cause of the failure of a graft or the cause of death in both solid organ and hematopoietic stem cell transplant recipients. Treatment with potent immunosuppressive medication is necessary for regulation in order to prevent rejection of solid organs and graft-versus-host disease. As a consequence of this therapy, infections are more common. Respiratory viral infections are the most frequent and serious complications after hematopoietic stem cell transplantation (HSCT). Despite increased methods of testing for viral pathogens, nearly 10% of pneumonia in HSCT recipients still remain "idiopathic pneumonia syndrome". Recently described human metapneumovirus could be one of the etiological agents of this syndrome.
Insights
Respiratory viral infections pose serious risks for immunocompromised patients, particularly after stem cell transplants. Human metapneumovirus may be a key cause of unexplained pneumonia in these vulnerable individuals.
Area of Science:
- Infectious Diseases
- Immunology
- Transplantation Medicine
Context:
- Immunosuppressive therapy is crucial for transplant recipients to prevent graft rejection and graft-versus-host disease.
- This necessary immunosuppression significantly increases the risk and severity of infections.
- Respiratory viral infections are a leading cause of morbidity and mortality in transplant populations.
Purpose:
- To highlight the significant threat of respiratory viral infections in hematopoietic stem cell transplantation (HSCT) recipients.
- To identify potential etiological agents contributing to idiopathic pneumonia syndrome (IPS) post-HSCT.
- To underscore the diagnostic challenges and the need for identifying novel pathogens like human metapneumovirus.
Summary:
- Respiratory viral infections represent a major complication for hematopoietic stem cell transplant (HSCT) recipients.
- Despite advanced diagnostics, a substantial proportion of pneumonia cases in HSCT patients remain idiopathic.
- Human metapneumovirus is emerging as a potential causative agent for idiopathic pneumonia syndrome in HSCT recipients.
Impact:
- Improved understanding of viral etiologies in post-transplant pneumonia.
- Potential for earlier diagnosis and targeted treatment of respiratory infections in HSCT patients.
- Enhanced strategies for managing infections and improving outcomes in immunocompromised individuals.
More Related Videos
09:02Infection of Primary Nasal Epithelial Cells Grown at an Air-Liquid Interface to Characterize Human Coronavirus-Host Interactions
Published on: September 22, 2023
04:32Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Related Concept Videos
Respiratory Syncytial Virus Disease
Atypical Pneumonia
Pneumonia II: Pathophysiology
Human Virome
Bacteriophages of the Human Virome
Pneumonia I: Introduction