Linked Life Data

12765431

Source:http://linkedlifedata.com/resource/pubmed/id/12765431

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2003-5-26
pubmed:abstractText
Pulmonary fibrosis results from excessive fibroblast proliferation and increased collagen deposition and occurs in chronic lung disease of prematurity (CLD). Platelet-derived growth factor (PDGF)-BB is mitogenic for fibroblasts and levels are increased in fibrotic lung disorders. Systemic dexamethasone (DEX) treatment improves pulmonary function and reduces inflammation in infants with or at risk of CLD. However, the effect of DEX treatment on fibroblast activity, PDGF-BB and collagen synthesis in the lungs of CLD patients is uncertain. Bronchoalveolar lavage (BAL) fluids, obtained from 15 infants at risk of CLD before and after DEX treatment, were analysed for fibroblast mitogenicity, PDGF-BB, N-terminal propeptide of collagen type III (PIIINP) and interleukin (IL)-1beta levels and inflammatory cell numbers. After DEX treatment, the mitogenic activity of BAL fluid for fibroblasts was not reduced but increased. The change in mitogenicity correlated with a change in BAL fluid PDGF-BB levels. Furthermore, BAL fluid-induced fibroblast proliferation was blocked using an inhibitor of the PDGF receptor. DEX treatment did not influence PIIINP levels, but reduced IL-1beta levels and inflammatory cell numbers in BAL fluid. This study suggests that dexamethasone treatment does not reduce fibroblast proliferation despite apparent downregulation of inflammation. The present findings do not support the use of dexamethasone for prevention of the fibrotic response in infants at risk of chronic lung disease of prematurity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0903-1936
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
842-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Dexamethasone treatment does not inhibit fibroproliferation in chronic lung disease of prematurity.
pubmed:affiliation
Dept of Immunology, Division of Neonatology, Erasmus Medical Centre, Rotterdam, the Netherlands. w.dik@erasmusmc.nl
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't