MIF and bronchopulmonary dysplasia: After establishing that miR-451 does increase significantly in both MLECs exposed to hyperoxia and in the lung tissues of BPD mice, we proceeded to evaluate the effect of a miR-451 inhibitor on the cardio-pulmonary phenotype, expression of MIF, inflammatory markers and vascular growth factors in newborn (NB) mice exposed to room air (RA) and BPD conditions.