Serum PGC-1α levels were lower in the BPD group than in the non-BPD group on the 1st, 7th, 14th, and 28th days of life and PMA 36 weeks, with statistically significant differences in PGC-1α levels on the 1st, 7th, 28th days of life and PMA 36 weeks(P < 0.05) (Fig. 3A). Here, PPARGC1A is linked to bronchopulmonary dysplasia.