Table 2. A total of 32 central genes were selected by STRING and Cytoscape software from PPI network including 20 up-regulated and 12 down-regulated genes.

DEGs	Gene symbol
Up-regulated	BGN, BMP7, COL1A1, COL1A2, CXCL1, CXCL11, CXCL2, CXCL3, CXCL8, EVA1A, IBSP, MMP1, MMP3, MMP7, MSLN, SERPINE1, SPP1, STC2, THY1, TIMP1
Down-regulated	CCL28, CD44, CHGB, CHRDL1, CNR1, CXCL12, LPAR1, NPY1R, PLAU, PYY, SOX9, SST