PMID- 8463392 OWN - NLM STAT- MEDLINE DCOM- 19930506 LR - 20210526 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 31 IP - 4 DP - 1993 Apr TI - Evaluation of immunoglobulin E-specific antibodies and viral antigens in nasopharyngeal secretions of children with respiratory syncytial virus infections. PG - 819-23 AB - Enzyme immunoassays were developed to detect the presence of specific immunoglobulin E (IgE) antibodies and respiratory syncytial (RS) virus structural proteins in nasopharyngeal secretions in order to improve the knowledge on some aspects of the pathogenesis of severe acute lower respiratory tract infections caused by RS virus. These assays were used to analyze clinical specimens from children with RS virus-associated infections (bronchiolitis and pneumonia), and the findings were correlated with the patients' clinical symptoms. The results indicate the presence of specific IgE against the two external glycoproteins (G and F) and the absence of detectable IgE levels for the internal viral antigens. There was a correlation between the levels of IgE-specific antibodies and the amount of viral protein F in the secretions, indicating that the IgE response against the viral glycoproteins might be related to the antigen load. In addition, a correlation was found between higher levels of both viral protein F-specific IgE and F antigen with higher respiratory rates in children with pneumonia. These findings may be relevant because they suggest an association between the virus load and the immune response in the pathogenesis of RS virus infections. FAU - Russi, J C AU - Russi JC AD - Departamento de Laboratorios, Ministerio de Salud Publica, Montevideo, Uruguay. FAU - Delfraro, A AU - Delfraro A FAU - Borthagaray, M D AU - Borthagaray MD FAU - Velazquez, B AU - Velazquez B FAU - Garcia-Barreno, B AU - Garcia-Barreno B FAU - Hortal, M AU - Hortal M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (Antibodies, Viral) RN - 0 (Antigens, Viral) RN - 0 (HN Protein) RN - 0 (Viral Envelope Proteins) RN - 0 (Viral Proteins) RN - 0 (attachment protein G) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Antibodies, Viral/analysis MH - Antigens, Viral/*analysis/immunology MH - Child, Preschool MH - *HN Protein MH - Humans MH - Immunoglobulin E/*analysis MH - Infant MH - Infant, Newborn MH - Nasopharynx/*microbiology MH - Respiratory Syncytial Viruses/*immunology MH - Respirovirus Infections/*immunology MH - Seasons MH - Viral Envelope Proteins MH - Viral Proteins/*analysis/immunology PMC - PMC263570 EDAT- 1993/04/01 00:00 MHDA- 1993/04/01 00:01 PMCR- 1993/04/01 CRDT- 1993/04/01 00:00 PHST- 1993/04/01 00:00 [pubmed] PHST- 1993/04/01 00:01 [medline] PHST- 1993/04/01 00:00 [entrez] PHST- 1993/04/01 00:00 [pmc-release] AID - 10.1128/jcm.31.4.819-823.1993 [doi] PST - ppublish SO - J Clin Microbiol. 1993 Apr;31(4):819-23. doi: 10.1128/jcm.31.4.819-823.1993.