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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-7-10
pubmed:abstractText
Administration of inhaled nitric oxide (iNO) is a potential therapeutic strategy to prevent bronchopulmonary dysplasia (BPD) in premature newborns with respiratory distress syndrome. We evaluated this approach in a rat model, in which premature pups were exposed to room air, hyperoxia, or a combination of hyperoxia and NO (8.5 and 17 ppm). We investigated the anti-inflammatory effects of prolonged iNO therapy by studying survival, histopathology, fibrin deposition, and differential mRNA expression (real-time RT-PCR) of key genes involved in the development of BPD. iNO therapy prolonged median survival 1.5 days (P = 0.0003), reduced fibrin deposition in a dosage-dependent way up to 4.3-fold (P < 0.001), improved alveolar development by reducing septal thickness, and reduced the influx of leukocytes. Analysis of mRNA expression revealed an iNO-induced downregulation of genes involved in inflammation (IL-6, cytokine-induced neutrophilic chemoattractant-1, and amphiregulin), coagulation, fibrinolysis (plasminogen activator inhibitor 1 and urokinase-type plasminogen activator receptor), cell cycle regulation (p21), and an upregulation of fibroblast growth factor receptor-4 (alveolar formation). We conclude that iNO therapy improves lung pathology and prolongs survival by reducing septum thickness, inhibiting inflammation, and reducing alveolar fibrin deposition in premature rat pups with neonatal hyperoxic lung injury.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1040-0605
pubmed:author
pubmed:issnType
Print
pubmed:volume
293
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
L35-44
pubmed:dateRevised
2007-12-3
pubmed:meshHeading
pubmed-meshheading:17384081-Administration, Inhalation, pubmed-meshheading:17384081-Animals, pubmed-meshheading:17384081-Animals, Newborn, pubmed-meshheading:17384081-Antioxidants, pubmed-meshheading:17384081-Bronchoalveolar Lavage Fluid, pubmed-meshheading:17384081-Cell Cycle, pubmed-meshheading:17384081-Fibrin, pubmed-meshheading:17384081-Fibrinolysis, pubmed-meshheading:17384081-Gene Expression Regulation, pubmed-meshheading:17384081-Lung, pubmed-meshheading:17384081-Lung Diseases, pubmed-meshheading:17384081-Nitric Oxide, pubmed-meshheading:17384081-Pneumonia, pubmed-meshheading:17384081-Proteins, pubmed-meshheading:17384081-Pulmonary Alveoli, pubmed-meshheading:17384081-RNA, Messenger, pubmed-meshheading:17384081-Rats, pubmed-meshheading:17384081-Rats, Wistar, pubmed-meshheading:17384081-Signal Transduction, pubmed-meshheading:17384081-Survival Analysis
pubmed:year
2007
pubmed:articleTitle
Inhaled nitric oxide attenuates pulmonary inflammation and fibrin deposition and prolongs survival in neonatal hyperoxic lung injury.
pubmed:affiliation
Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural