Infection with human respiratory syncytial (RS) virus is the most common cause of hospital stay due to pediatric lower respiratory tract infection. An exaggerated immune response contributes to the pathogenesis and small children may have over reactive airways for a long time after an infection. New research has shown that polymorphonuclear leukocytes (PMNs) are stimulated by the virus. Besides fighting the infection they also cause collateral damage to the host. Among other mechanisms PMNs stimulates mucus formation that affects breathing. They also secrete enzymes, toxic proteins and free radicals that may cause harm to lung tissue and airways. The current project strives towards identifying and quantifying inflammatory mediators in sputum, urine and blood of children with severe RS-virus infection. The ultimate aim of the project is to, in detail, describe proteins contributing to the pathogenesis of the disease.
Study Type
OBSERVATIONAL
Enrollment
31
The intervention consists of lower respiratory tract infection due to RS-virus
Akademiska sjukhuset, Centraloperation
Uppsala, Sweden
Levels of inflammatory mediators in sputum
Simultaneous detection and quantification of hundreds of potential mediators using mass-spectrometry
Time frame: Up to three weeks
Levels of inflammatory mediators in blood
Simultaneous detection and quantification of hundreds of potential mediators using mass-spectrometry
Time frame: Up to three weeks
Levels of inflammatory mediators in urine
Simultaneous detection and quantification of hundreds of potential mediators using mass-spectrometry
Time frame: Up to three weeks
Disease severity as measured by sequential organ failure assessment score (SOFA-score)
Time frame: Up to 30-days
Lung function as measured in respirator
Time frame: Up to 30-days
Lung function as measured by spirometry
Time frame: Within 1 year
Lung function as measured by spirometry
Time frame: Within 10 years
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