Journal of

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Wounds are any type of tissue dehiscence which can occur on skin, mucosae or connective tissue. After the wound has created, inflammatory process, the immune system changes as well as the skin repair cascade will be activated. To provide a product that can direct the above processes in a desirable repair mechanism will be useful. Studies have shown that aloe vera products, with effects such as increased collagen production, antioxidant and water retaining properties, are good options.
Aloe vera grows mainly in arid regions and this fact can be welcomed in many parts of the world. The use of medicinal herbs also reduces the cost for the health systems. Aloe vera is a plant that does not require much cost for plant and harvest. Besides, the compatibility of aloe vera products with a variety of formulations encourages formulators to use it in the pharmaceutical and cosmetic industries.
In this review, the use of aloe vera in wound management and some skin diseases will be discussed.

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Background and Aim: Psoriasis is a chronic inflammatory skin disease, influenced by genetic and immune-based factors that is associated with skin inflammation. Aloe vera gel is traditionally used to treat skin diseases including psoriasis.
 

Methods: In this study, ethanolic extract of aloe vera gel was evaluated for its anti-inflammatory and antioxidant activity in skin-derived A431 cells. First, after preparing the extract and then the green synthesis of gold nanoparticles using the extract, their effect on the expression of inflammatory genes as well as their antioxidant properties were investigated. 
 

Results: The use of different concentrations of aloe vera extract caused a relative increase in EGFR and Nrf2 expression levels and decreased expression of NF-κB, TNF-α and IL-6 inflammatory genes in A431 skin cells. But the effect of synthesized nanoparticles was greater than aloe vera extract in altering the expression of signaling and inflammatory genes.
 

Conclusion: The synthesized extracts and nanoparticles had antioxidant properties and also reduced the expression of inflammatory genes in cells. However, the effect of nanoparticles was much greater than that of extracts in reducing inflammatory genes.