What’s Old Is New: An Emerging Focus on Dermatoporosis

February 2024 | Volume 23 | Issue 2 | 113 | Copyright © February 2024


Published online January 30, 2024

Cleo Whiting BA, Sara Abdel Azim MS, Adam Friedman MD FAAD

Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, DC
 

discussed above, as well as supplementing with oral vitamin C and a bioflavonoid complex.10,11 A mainstay of treatment is the application of topical retinoids as they upregulate HA and CD44 synthesis in mouse skin and reduce the signs of photoaging in clinical studies.5,12,13 Moreover, the application of topical retinaldehyde plus intermediate-size hyaluronate fragments shows synergistic effects, with clinical improvement of purpura and skin thickness in addition to a significant reduction in p16Ink4a-positive cells in the epidermis and dermis.14-16

Moreover, while vitamin D (VD) is a critical regulator of systemic calcium absorption and storage, it has essential functions in the skin. Notable effects of VD relevant to dermatoporosis include stimulating collagen synthesis, modulating the expression of genes contributing to epidermal development and maintenance, mitigating chronic inflammation associated with aging through anti-inflammatory effects, and providing cytoprotection in the setting of UV irradiation.17 Given this relationship between VD and normal skin homeostasis, the use of VD analogs to treat dermatoporosis may be promising. The use of calcipotriene, a synthetic derivative of vitamin D3 (calcitriol), is well-established for the treatment of psoriasis through its inhibition of keratinocyte proliferation and induction of keratinocyte terminal differentiation.18 Calcipotriene also improves wound healing through its promotion of keratinocyte migration and upregulation of human cathelicidin antimicrobial protein (hCAP18), a regulator of the innate immune response in the setting of tissue injury that promotes re-epithelialization and tissue repair.19,20 Considering these results, focal supplementation of VD in the skin using an active analog such as calcipotriene may serve to reverse the dermatoporotic state, particularly in combination with a topical retinoid (Figure 2). 
 

CONCLUSION

Dermatoporosis is a detrimental condition to the aging population and warrants continued study of its mechanisms and novel treatment options. While topical retinoids are well-known to effectively treat dermatoporosis, a vitamin D3 analog such as calcipotriene may be an additional, useful tool for treating and preventing this prevalent and deleterious skin disease.  
 

Disclosure

CW's work is funded through an independent fellowship grant from Galderma; SAA's work is funded through independent fellowship grants from Lilly and Pfizer. AF has no relevant conflicts to disclose. 
 

REFERENCES

 

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AUTHOR CORRESPONDENCE

Adam Friedman MD FAAD ajfriedman@mfa.gwu.edu