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Article

Dictamnus dasycarpus Turcz. Root Bark Improves Skin Barrier Function and Symptoms of Atopic Dermatitis in Mice

by
Sangjun Park
1,†,
Jinkyu Yang
1,†,
Kyoungmin Sun
1,
Seonah Park
1,
Jimi Lee
1,
Soyeon Kim
1,
Ji Hyo Lyu
2,* and
Hyungwoo Kim
1,*
1
Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
2
Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Int. J. Mol. Sci. 2024, 25(23), 13178; https://doi.org/10.3390/ijms252313178
Submission received: 28 October 2024 / Revised: 3 December 2024 / Accepted: 4 December 2024 / Published: 7 December 2024
(This article belongs to the Section Bioactives and Nutraceuticals)
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Abstract

The root bark of Dictamus dasycarpus Turcz. has been traditionally used for the topical treatment of skin disorders like pruritus. This study was designed to investigate the inflammatory and skin barrier protective effects of D. dasycarpus in mice with calcipotriol (MC903)-induced atopic dermatitis (AD). Topical skin lesions on male Balb/c mice (8 weeks old) were treated topically with an ethanolic extract of D. dasycarpus (EEDD), and skin water content, water holding capacity (WHC), histopathological abnormalities, and inflammatory cytokine and chemokine levels were investigated. Topical application of EEDD effectively alleviated skin lesion severity, improved skin water content and WHC, and ameliorated histopathological abnormalities, including hyperkeratosis, blood vessel numbers near the epidermis, spongiotic changes, and immune cell infiltration in skin tissues. EEDD also suppressed inflammatory cytokines and chemokines, such as tumor necrosis factor (TNF)-α, thymic stromal lymphopoietin (TSLP), interleukin (IL)-1β, IL-4, IL-8, and monocyte chemotactic protein (MCP)-1. In RAW264.7 cells, EEDD reduced nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) expression and suppressed the phosphorylations of extracellular signal-regulated kinase (ERK) and p38. These results suggest that the root bark of D. dasycarpus has therapeutic potential due to its anti-dermatitis and skin barrier protective effects in AD and that it could be used as an ingredient in skincare products.
Keywords: Dictamus dasycarpus; inflammation; skin barrier function; atopic dermatitis; skincare Dictamus dasycarpus; inflammation; skin barrier function; atopic dermatitis; skincare

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MDPI and ACS Style

Park, S.; Yang, J.; Sun, K.; Park, S.; Lee, J.; Kim, S.; Lyu, J.H.; Kim, H. Dictamnus dasycarpus Turcz. Root Bark Improves Skin Barrier Function and Symptoms of Atopic Dermatitis in Mice. Int. J. Mol. Sci. 2024, 25, 13178. https://doi.org/10.3390/ijms252313178

AMA Style

Park S, Yang J, Sun K, Park S, Lee J, Kim S, Lyu JH, Kim H. Dictamnus dasycarpus Turcz. Root Bark Improves Skin Barrier Function and Symptoms of Atopic Dermatitis in Mice. International Journal of Molecular Sciences. 2024; 25(23):13178. https://doi.org/10.3390/ijms252313178

Chicago/Turabian Style

Park, Sangjun, Jinkyu Yang, Kyoungmin Sun, Seonah Park, Jimi Lee, Soyeon Kim, Ji Hyo Lyu, and Hyungwoo Kim. 2024. "Dictamnus dasycarpus Turcz. Root Bark Improves Skin Barrier Function and Symptoms of Atopic Dermatitis in Mice" International Journal of Molecular Sciences 25, no. 23: 13178. https://doi.org/10.3390/ijms252313178

APA Style

Park, S., Yang, J., Sun, K., Park, S., Lee, J., Kim, S., Lyu, J. H., & Kim, H. (2024). Dictamnus dasycarpus Turcz. Root Bark Improves Skin Barrier Function and Symptoms of Atopic Dermatitis in Mice. International Journal of Molecular Sciences, 25(23), 13178. https://doi.org/10.3390/ijms252313178

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