uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Inhaled nitric oxide treatment inhibits neuronal injury after meconium aspiration in piglets
Show others and affiliations
2007 (English)In: Early Human Development, ISSN 0378-3782, Vol. 83, no 2, 77-85 p.Article in journal (Refereed) Published
Abstract [en]

Background: Meconium aspiration-induced hypertensive lung injury is frequently associated with neuronal damage. Inhaled nitric oxide (iNO) is widely used in the treatment of pulmonary hypertension, but its effects on the brain are poorly known. Aims: The aim of this study was to determine the effects of iNO treatment on the neuronal tissue after meconium aspiration. Study design: 71 anesthetized, catheterized and ventilated newborn piglets were studied for 6 h. Thirty-five piglets were instilled with a bolus of human meconium intratracheally and 36 piglets with saline instillation served as controls. Nineteen meconium piglets and 17 control piglets were continuously treated with 20 ppm of iNO, started at 30 min after the insult. The extent of neuronal injury was analysed histologically, and the levels of brain tissue lipid peroxidation products, reduced glutathione (GSH), myeloperoxidase activity and oxidized DNA were analysed as indicators of oxidative stress. Results: iNO treatment diminished the pulmonary hypertensive response caused by meconium aspiration, but did not change systemic or carotid hemodynamics. NO administration was associated with reduced neuronal injury and diminished amount of oxidized DNA in the hippocampus of the meconium piglets. Further, iNO treatment was associated with decreased level of GSH in the cortex, but no change in lipid peroxidation production or myeloperoxidase activity was detected in any of the studied brain areas. Conclusions: Our results suggest that iNO treatment may inhibit DNA oxidation and neuronal injury in the hippocampus, associated with newborn meconium aspiration.

Place, publisher, year, edition, pages
2007. Vol. 83, no 2, 77-85 p.
Keyword [en]
Administration; Inhalation, Analysis of Variance, Animals, Asphyxia Neonatorum/*drug therapy/etiology, Blood Pressure, Cardiac Output, Case-Control Studies, Chromatography; High Pressure Liquid, Deoxyguanosine/analogs & derivatives/metabolism, Glutathione/metabolism, Heart Rate, Humans, Infant; Newborn, Interneurons/*pathology, Lipid Peroxidation/physiology, Meconium Aspiration Syndrome/*physiopathology, Nitric Oxide/administration & dosage/*therapeutic use, Oxidative Stress/*physiology, Peroxidase/metabolism, Spectrophotometry; Ultraviolet, Sus scrofa, Thiobarbituric Acid Reactive Substances/metabolism
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-10695DOI: 10.1016/j.earlhumdev.2006.05.003PubMedID: 16793227OAI: oai:DiVA.org:uu-10695DiVA: diva2:38463
Available from: 2007-04-19 Created: 2007-04-19 Last updated: 2010-04-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=16793227&dopt=Citation

Search in DiVA

By author/editor
Kalimo, Hannu
By organisation
Department of Genetics and Pathology
In the same journal
Early Human Development
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 583 hits
ReferencesLink to record
Permanent link

Direct link