The differences in the effects of PDRN injection treatment on different skin problems are mainly reflected in the following aspects:
1. Skin aging:
PDRN can improve skin texture and reduce wrinkles by activating adenosine A2A receptors to promote collagen synthesis and inhibit the expression of matrix metalloproteinase (MMP-1) and elastase. It can also maintain skin elasticity and reduce signs of aging such as fine lines, wrinkles, sagging and dehydration by promoting angiogenesis and tissue regeneration.
2. Pigmentation:
PDRN inhibits melanogenesis by inhibiting melanogenesis gene expression and tyrosinase activity, indicating that PDRN is a hypopigmentation agent and plays an important role in the skin whitening process. It inhibits MITF and its target genes in the process of melanogenesis and directly inhibits the activity of tyrosinase, the rate-limiting enzyme of melanogenesis.
3. Wound healing:
PDRN can promote the growth of fibroblasts and accelerate the wound healing process. In the skin incision model, PDRN promoted angiogenesis, stimulated granulation tissue proliferation, reduced inflammatory cell infiltration, promoted collagen deposition, and improved the skin repair process by increasing VEGF and CD31 expression, stimulating altered cell cycles, or activating A2A receptors to exert anti-inflammatory effects.
4. Anti-inflammatory effect:
PDRN, as an A2A receptor agonist, significantly reduced the expression of pro-inflammatory cytokines, confirming its anti-inflammatory effect. In the treatment of inflammatory skin diseases such as psoriasis, PDRN exhibits anti-inflammatory properties by inhibiting inflammatory cytokines, a process mediated by the activation of adenosine A2A receptors.
5.Promoting angiogenesis:
PDRN stimulates VEGF production by activating adenosine A2A receptors, thereby promoting angiogenesis. In clinical situations with poor skin repair and impaired angiogenesis, such as burns and diabetic foot ulcers, PDRN promotes wound healing by reducing inflammatory infiltration and burn edema, as well as stimulating skin and epidermal regeneration, fibroblast proliferation, and new angiogenesis.
In summary, PDRN injection therapy has shown positive effects in improving skin aging, pigmentation, wound healing, anti-inflammation, and promoting angiogenesis, but its specific effects may vary depending on the skin problem.