RGD Reference Report - Interleukin-1 balance in the lungs of preterm infants who develop bronchopulmonary dysplasia. - Rat Genome Database

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Interleukin-1 balance in the lungs of preterm infants who develop bronchopulmonary dysplasia.

Authors: Kakkera, DK  Siddiq, MM  Parton, LA 
Citation: Kakkera DK, etal., Biol Neonate. 2005;87(2):82-90. Epub 2004 Oct 14.
RGD ID: 4143172
Pubmed: PMID:15539764   (View Abstract at PubMed)
DOI: DOI:10.1159/000081504   (Journal Full-text)

BACKGROUND: The local pulmonary balance between the agonist and antagonist of interleukin-1 (IL-1) may influence the development of inflammatory disease and resultant structural damage in a variety of human diseases including adult respiratory distress syndrome and asthma. OBJECTIVES: We tested the hypothesis that IL-1 cytokines are early markers for bronchopulmonary dysplasia (BPD), when measured in tracheal aspirates (TAs) obtained from premature infants being ventilated for respiratory distress syndrome during the first week of life. METHODS: Serial TAs were collected on days 1, 3, 5 and 7 from 35 preterm infants (16 BPD, 19 non-BPD) in the absence of chorioamnionitis, and were assayed for IL-1 cytokines and leukocytes. RESULTS: In spite of comparable maternal demographic and clinical characteristics, premature infants who developed BPD had higher levels of IL-1 receptor antagonist (Ra) in their airways on the first day of life. This antagonist IL-1Ra was an early and persistent marker for BPD during the first week of life. The agonist IL-1beta also increased significantly for BPD patients early, both compared to non-BPD patients, and also within the BPD group. While the early (day 1) IL-1 antagonist/agonist molar balance offered protection, by days 5 and 7, a threshold for IL-1Ra in the presence of increasing IL-1beta expression-favored pro-inflammation in the BPD group. CONCLUSIONS: We conclude that a strong and early expression of airway antagonist (IL-1Ra) proves ultimately to be sub-optimal and non-protective due to the robust expression of airway agonist (IL-1beta) seen by day 5 in premature infants who develop BPD.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
bronchopulmonary dysplasia  IEP 4143172; 4143172protein:increased expression:lungRGD 
bronchopulmonary dysplasia  ISOIL1B (Homo sapiens)4143172; 4143172protein:increased expression:lungRGD 
bronchopulmonary dysplasia  ISOIL1RN (Homo sapiens)4143172; 4143172protein:increased expression:lungRGD 

Objects Annotated

Genes (Rattus norvegicus)
Il1b  (interleukin 1 beta)
Il1rn  (interleukin 1 receptor antagonist)

Genes (Mus musculus)
Il1b  (interleukin 1 beta)
Il1rn  (interleukin 1 receptor antagonist)

Genes (Homo sapiens)
IL1B  (interleukin 1 beta)
IL1RN  (interleukin 1 receptor antagonist)


Additional Information