Postnatal steroids as lung protective and anti-inflammatory in preterm lambs exposed to antenatal inflammation

Lung inflammation and impaired alveolarization precede bronchopulmonary dysplasia (BPD). Glucocorticoids are anti-inflammatory and reduce ventilator requirements in preterm infants. However, high-dose glucocorticoids inhibit alveolarization. The effect of glucocorticoids on lung function and structure in preterm newborns exposed to antenatal inflammation is unknown. We hypothesise that postnatal low-dose dexamethasone reduces ventilator requirements, prevents inflammation and BPD-like lung pathology, following antenatal inflammation.

Citation:
Papagianis PC, Noble PB, Ahmadi-Noorbakhsh S, ....... Pillow JJ . Postnatal steroids as lung protective and anti-inflammatory in preterm lambs exposed to antenatal inflammation. Pediatr Res. 2024;95(4):931-40.

Keywords:
Lung; pregnancy; anti-inflammatory agents; pharmacology; bronchopulmonary dysplasia; prevention; control; glucocorticoids; premature

Abstract:
Lung inflammation and impaired alveolarization precede bronchopulmonary dysplasia (BPD). Glucocorticoids are anti-inflammatory and reduce ventilator requirements in preterm infants. However, high-dose glucocorticoids inhibit alveolarization. The effect of glucocorticoids on lung function and structure in preterm newborns exposed to antenatal inflammation is unknown. We hypothesise that postnatal low-dose dexamethasone reduces ventilator requirements, prevents inflammation and BPD-like lung pathology, following antenatal inflammation.