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Glutathione and neonatal lung disease
J A Reise1, G W Taylor, C H Fardy
1Department of Clinical Pharmacology, Royal Postgraduate Medical School, London, UK.
Clinica Chimica Acta; International Journal of Clinical Chemistry
|November 14, 1997
Summary
Neonatal bronchoalveolar lavage fluid glutathione (GSH) levels are lower than in adults. Lowest GSH concentrations correlate with severe airway issues and high oxygen requirements in infants.
Area of Science:
- Biochemistry
- Neonatal Physiology
- Respiratory Medicine
Background:
- Glutathione (GSH) is a critical antioxidant in the lungs.
- Pulmonary GSH levels in neonates are not well-characterized.
- Oxidative stress is a concern in neonatal respiratory distress.
Purpose of the Study:
- To measure pulmonary glutathione levels in neonates.
- To compare neonatal GSH levels to adult levels.
- To investigate the relationship between GSH and oxygen therapy in neonates.
Main Methods:
- HPLC-electrochemical detection was used to measure GSH in bronchoalveolar lavage fluid.
- Urea dilution method estimated GSH in epithelial lining fluid.
- Data collected from 28 neonates up to 21 days postpartum.
Main Results:
- Neonatal pulmonary GSH levels were significantly lower than adult levels.
- Geometric mean GSH concentration was 1.3 µmol L⁻¹.
- An inverse relationship was observed between GSH levels and markers of oxygen therapy (oxygen index, FiO₂).
Conclusions:
- Neonates exhibit lower pulmonary GSH concentrations compared to adults.
- Low GSH levels in neonates are associated with severe airway disease and high oxygen dependency.
- Findings suggest a potential role for GSH in neonatal lung injury and recovery.