DFUs	diabetic foot ulcers
PBS	phosphate-buffered Saline
VEGF	vascular endothelial growth factor
SMAD2	mothers against decapentaplegic homolog 2
MMP	matrix metalloproteinases
ECM	extracellular matrix
MAPK	mitogen-activated protein kinase
HIF-1α	hypoxia-inducible factor 1-alpha
RT-PCR	reverse transcription-polymerase chain reaction
GAPDH	glyceraldehyde 3-phosphate dehydrogenase
TNF-α	tumor necrosis factor-alpha
IL-1β	interleukin-1 beta
IL-6	interleukin-6
MCP-1	monocyte chemoattractant protein-1
TGF-β	transforming growth factor-beta
PDGF	platelet-derived growth factor
FGF 2	fibroblast growth factor