Serial Changes of Serum Endostatin and Angiopoietin-1 Levels in Preterm Infants with Severe Bronchopulmonary Dysplasia and Subsequent Pulmonary Artery Hypertension

Background: In bronchopulmonary dysplasia (BPD), disrupted angiogenesis may result from an imbalance between pro- and anti-angiogenic factors triggered by inflammation, leading to the late development of pulmonary artery hypertension (PAH). Objectives: To investigate whether the levels of serum endostatin (as an anti-angiogenic factor) and angiopoietin-1 (AP-1; as a pro-angiogenic factor) in early life are associated with the development of PAH in preterm infants with severe BPD. Methods: In this prospective cohort study, the levels of serum endostatin and AP-1 were measured from 56 infants (gestational age