VEGFA and erectile dysfunction: Using stem cells from fat or urine transfected with vascular endothelial growth factor (VEGF) to deliver bioactive angiogenic growth factors caused endothelial cell migration and proliferation in vivo [60], and promoted endothelial and smooth muscle cell function recovery, increased processing of oxidation within cavernous tissue, and improved erectile dysfunction in a rat model of diabetic erectile dysfunct [61].