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Published in: Dermatology and Therapy 8/2022

Open Access 19-07-2022 | Atopic Dermatitis | Original Research

Efficacy of Pseudo-Ceramide-Containing Steroid Lamellar Cream in Patients with Mild to Moderate Atopic Dermatitis: A Randomized, Double-Blind Study

Authors: Keita Okoshi, Yoshinori Kinugasa, Shotaro Ito, Takuji Kume, Tsuyoshi Seki, Takahiro Nishizaka, Joji Okada, Hiromitsu Kawada, Azumi Nagasawa, Makoto Iijima, Masatoshi Abe, Osamu Nemoto

Published in: Dermatology and Therapy | Issue 8/2022

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Abstract

Introduction

Atopic dermatitis (AD) is a chronic inflammatory skin disorder involving decreased barrier function of the stratum corneum. This decrease, caused by a reduction in ceramide, the primary component of intercellular lipids in the stratum corneum, leads to a disturbance in the lamellar structure.

Methods

We developed a formulation (test cream) containing a steroid and synthetic pseudo-ceramide (SLE: N-(3-hexadecyloxy-2-hydroxypropyl)-N-2-hydroxyethyl hexadecanamide) that forms a lamellar structure on the skin after its application and drying. The formulation or control cream (a formulation containing a steroid but not pseudo-ceramide that does not form a lamellar structure) was applied twice daily for 2 weeks to the lesional area of 34 participants with mild to moderate AD symptoms.

Results

The test cream showed a periodic structure with an interface space of approximately 8.2 nm in transmission electron microscopy and small- and wide-angle X-ray scattering, similar to the lamellar structure in the human stratum corneum. In the double-blind test, the anti-inflammatory effects of the test cream (n = 17) were comparable to those of the control cream (n = 17). In the test cream group, a significant increase in the stratum corneum moisture content (p < 0.01) and significant decrease in transepidermal water loss (p < 0.05) were observed at weeks 1 and 2 after application compared with those before application. No such change was observed in the control group.

Conclusion

The results indicate that, even with a relatively short application period of 2 weeks, the test cream not only suppressed inflammation of the lesional area, but also improved the inherent barrier function of the stratum corneum, suggesting its potential as a treatment option for patients with AD.
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Metadata
Title
Efficacy of Pseudo-Ceramide-Containing Steroid Lamellar Cream in Patients with Mild to Moderate Atopic Dermatitis: A Randomized, Double-Blind Study
Authors
Keita Okoshi
Yoshinori Kinugasa
Shotaro Ito
Takuji Kume
Tsuyoshi Seki
Takahiro Nishizaka
Joji Okada
Hiromitsu Kawada
Azumi Nagasawa
Makoto Iijima
Masatoshi Abe
Osamu Nemoto
Publication date
19-07-2022
Publisher
Springer Healthcare
Published in
Dermatology and Therapy / Issue 8/2022
Print ISSN: 2193-8210
Electronic ISSN: 2190-9172
DOI
https://doi.org/10.1007/s13555-022-00766-2

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