Fig. 1. Serum concentrations of MMP-8 (A), MMP-9 (B), TIMP-2 (C), and TIMP-1 (D) at birth in bronchopulmonary dysplasia (BPD) versus no BPD preterm infants. Preterm infants who developed BPD had significantly lower levels of TIMP-2 at birth compared with those who did not develop BPD. MMP, matrix metalloproteinase; TIMP, tissue inhibitor of metalloproteinase. Values are presented as mean±standard deviation.
