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Expression of IL-31 gene transcripts in NC/Nga mice with atopic dermatitis
Akiko Takaoka1, Iwao Arai, Masanori Sugimoto
1Department of Medicinal Pharmacology, Medicinal Research Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403 Yoshino-cho, Kita-ku, Saitama 331-9530, Japan. a.takaoka@po.rd.taisho.co.jp
Abstract:
To search for the pruritogen of atopic dermatitis, a characteristic symptom in atopic dermatitis patients, we examined interleukin-31 (IL-31) mRNA expression in NC/Nga mice as an animal model of atopic dermatitis. The expression of IL-31 mRNA in the skin of NC/Nga mice with scratching behavior was significantly higher than that in NC/Nga mice without scratching behavior. Our findings suggest that IL-31 may participate in the cause of itch sensation and promote scratching behavior in NC/Nga mice with atopic dermatitis.
Insights
Interleukin-31 (IL-31) may cause itch in atopic dermatitis. Researchers found higher IL-31 mRNA in mice exhibiting scratching behavior, suggesting its role in this common symptom.
Area of Science:
- Immunology
- Dermatology
- Animal Models
Background:
- Atopic dermatitis is characterized by intense itch and scratching.
- Identifying the specific pruritogens responsible for itch is crucial for effective treatment.
- The role of interleukin-31 (IL-31) in mediating itch in atopic dermatitis requires further investigation.
Purpose of the Study:
- To investigate the potential role of interleukin-31 (IL-31) as a pruritogen in atopic dermatitis.
- To examine the expression of IL-31 mRNA in a mouse model of atopic dermatitis.
Main Methods:
- Utilized NC/Nga mice, an established animal model for atopic dermatitis.
- Measured and compared interleukin-31 (IL-31) mRNA expression levels in skin tissue.
- Correlated IL-31 mRNA expression with the presence or absence of scratching behavior.
Main Results:
- Significantly elevated levels of IL-31 mRNA were observed in the skin of NC/Nga mice exhibiting scratching behavior.
- IL-31 mRNA expression was markedly lower in NC/Nga mice without scratching behavior.
- A strong correlation was found between increased IL-31 mRNA expression and the manifestation of scratching.
Conclusions:
- Interleukin-31 (IL-31) is implicated as a potential pruritogen contributing to itch sensation in atopic dermatitis.
- IL-31 may play a significant role in promoting scratching behavior observed in atopic dermatitis patients.
- These findings highlight IL-31 as a potential therapeutic target for managing itch in atopic dermatitis.
