DSG1 and bronchopulmonary dysplasia: For proteins detected in every sample, significantly decreased abundance (determined by TMT tag count at the spectral peak) of the desmosome proteins desmoglein-1 (DSG1) (Log2FC − 0.26, p = 0.02), desmocollin-1 (DSC1) (− 0.27, p = 0.02) and junctional plakoglobin (JUP) (− 0.23, p = 0.04), and increased abundance of KRT6A (0.68, p = 0.01) was observed when the BPD and No BPD groups were compared (Table 2).