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. 2022 Dec 29;24(1):585. doi: 10.3390/ijms24010585

Figure 6.

Figure 6

Schematic depiction of plausible mechanisms underlying the protective effect of metformin against hyperglycaemia-induced vascular fibrosis. Metformin inhibits TGF-β1/SMAD2/3 signalling to inhibit DDR2-dependent pro-fibrotic gene expression in HG-stimulated vascular adventitial fibroblasts.