MMP2 and bronchopulmonary dysplasia: Other proteins found to be increased in eBPD, consistent with some rodent models, include fibrillin-2 (81), lysyl oxidase 2 (LOXL2) (82, 83), and MMP2 (matrix metalloproteinase 2), the latter despite prior reports that MMP2 decreases in tracheal aspirates of patients with BPD (84).