RGD Reference Report - Bronchoalveolar lavage and interstitial cells have different roles in radiation-induced lung injury. - Rat Genome Database

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Bronchoalveolar lavage and interstitial cells have different roles in radiation-induced lung injury.

Authors: Hong, JH  Jung, SM  Tsao, TC  Wu, CJ  Lee, CY  Chen, FH  Hsu, CH  McBride, WH  Chiang, CS 
Citation: Hong JH, etal., Int J Radiat Biol. 2003 Mar;79(3):159-67.
RGD ID: 4142805
Pubmed: PMID:12745880   (View Abstract at PubMed)
DOI: DOI:10.1080/0955300031000076894   (Journal Full-text)

PURPOSE: To determine the contribution of intra-alveolar cells as opposed to cells fixed in the interstitium in the development of radiation-induced lung injury. MATERIALS AND METHODS: C3H/HeN mice were irradiated to the thorax with various doses of radiation. The cellular composition and cytokine production were assessed in the two sites by histological staining and RNase protection assay. RESULTS: Following thoracic irradiation, there was an initial decrease in the number of bronchial alveolar lavage (BAL) cells that was followed after 2 months by a dose-dependent increase up to 4 months. Foamy Mac-1 positive macrophages were present early in the BAL populations, which also expressed the pro-inflammatory cytokines TNF-alpha, IL-1alpha and IL-1beta, but this response subsided by the time of onset of pneumonitis (3 months). In contrast, in whole lung tissue there was a steady increase in Mac-1 positive cells and increased expression of TNF-alpha, IL-1alpha and IL-1beta mRNAs to maximum levels at 3-4 months. CONCLUSIONS: These data indicate distinct temporal and spatial changes in pro-inflammatory cytokine gene expression in different cellular compartments of the irradiated lung. BAL cells became inflammatory early on, but interstitial cells became involved later and were probably more involved in contributing to the pneumonitis.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
lung disease  ISOIl1a (Mus musculus)4142805lung injury and mRNA:increased expression:lungRGD 
lung disease  ISOIl1a (Mus musculus)4142805lung injury and mRNA:increased expression:lungRGD 
lung disease  IEP 4142805; 4142805lung injury and mRNA:increased expression:lungRGD 
lung disease  ISOTnf (Mus musculus)4142805; 4142805lung injury and mRNA:increased expression:lungRGD 

Objects Annotated

Genes (Rattus norvegicus)
Il1a  (interleukin 1 alpha)
Tnf  (tumor necrosis factor)

Genes (Mus musculus)
Il1a  (interleukin 1 alpha)
Tnf  (tumor necrosis factor)

Genes (Homo sapiens)
IL1A  (interleukin 1 alpha)
TNF  (tumor necrosis factor)


Additional Information