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Prevention of Oxygen-Induced Inflammatory Lung Injury by Caffeine in Neonatal Rats
Stefanie Endesfelder1, Evelyn Strauß1, Ivo Bendix2
1Department of Neonatology, Charité-Universitätsmedizin Berlin, Berlin, Germany.
Oxidative Medicine and Cellular Longevity
|August 25, 2020
Summary
Caffeine treatment reduced lung inflammation and cell death in a rat model of bronchopulmonary dysplasia (BPD). This suggests caffeine may protect against oxygen-induced lung injury in preterm infants.
Area of Science:
- Neonatal Physiology
- Pulmonary Medicine
- Pharmacology
Background:
- Preterm birth is linked to respiratory issues like apnea and bronchopulmonary dysplasia (BPD).
- High oxygen therapy, while essential, can worsen BPD.
- Caffeine is used for apnea and shows potential in reducing BPD rates.
Purpose of the Study:
- To investigate caffeine's effects on inflammation and cell death in a hyperoxia-induced BPD model in newborn rats.
- To explore caffeine's impact on adenosine receptor expression in lung tissue.
Main Methods:
- Lung injury induced by 80% oxygen exposure in Wistar rats for 3 or 5 days.
- Caffeine (10 mg/kg) or PBS administered every two days from birth.
- Analysis of lung tissue at postnatal days 3, 5, and 15 using immunohistology, ELISA, and qPCR.
Main Results:
- Caffeine significantly reduced hyperoxia-induced cell death and apoptosis.
- Proinflammatory mediators and NFκB were decreased in caffeine-treated lungs.
- Caffeine modulated adenosine receptor transcription and increased immune cell infiltration.
Conclusions:
- Caffeine demonstrates antioxidative and anti-inflammatory properties in experimental oxygen-mediated lung injury.
- Findings support caffeine's therapeutic potential in mitigating BPD development mechanisms.
