Fig. 2

Enrichment analyses of the overlapping DEGs in GSE5281 and GSE8397 databases. A GO enrichment analysis of the overlapping DEGs. The X-axis represents the q value (− log10), and the Y-axis represents the GO terms. The GO terms were measured by the rich factor, q value, and number of genes enriched. The greater the Rich factor is, the greater the degree of enrichment and the greater the P value. The brighter the color of red is, the more significant the term. B ClueGO analysis of the overlapping DEGs from AD/PD patients. Functionally grouped network with terms as nodes linked based on their kappa score level (≥ 0.4), where only the label of the most significant term per group is shown. The node size represents the term enrichment significance. Functionally related groups partially overlap