期刊
JOURNAL OF BIOMEDICAL RESEARCH
卷 35, 期 6, 页码 448-458出版社
NANJING MEDICAL UNIV
DOI: 10.7555/JBR.35.20210012
关键词
ovalicin; IL-31; pruritus; inflammation; calcium; atopic dermatitis
资金
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education, Science and Technology [2020R1A2C1010215]
- Brain Korea 21 Future Veterinary Medicine Leading Education and Research Center, College of Veterinary Medicine, Seoul National University
- National Research Foundation of Korea [2020R1A2C1010215] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The study demonstrated that ovalicin extracted from Cordyceps militaris has the potential to suppress inflammation and pruritic responses associated with atopic dermatitis, offering a promising alternative to commonly used steroidal drugs for AD treatment. Ovalicin significantly alleviated allergic symptoms in an AD mouse model by reducing the expression of downstream genes and decreasing the number of infiltrated macrophages and mast cells in the dermis. This research provides insights into the anti-atopic mechanism of ovalicin, highlighting its therapeutic potential in AD management.
Atopic dermatitis (AD) is a common skin disorder difficult to be treated with medication. This study investigated the potential of ovalicin extracted from Cordyceps militaris for the treatment of AD using in vitro and in vivo models. We found that, in canine macrophage cell line DH82, lipopolysaccharide (LPS) upregulated the expression of genes associated with inflammation and pruritic responses through activating calcium and interleukin-31 (IL-31) signaling, and the upregulation could be suppressed by ovalicin, with an effect significantly stronger than dexamethasone. Ovalicin also reduced the expression of IL-31 downstream genes, including JAK2 (Janus kinase 2), TRPV1 (transient receptor potential vanilloid receptor-1), and HRH2 (histamine receptor H2). Ovalicin significantly alleviated the allergic symptoms in the AD mouse model. Histologically, the number of macrophages and mast cells infiltrated in the dermis was significantly reduced by ovalicin treatment. In the skin tissue of AD mice, reduction of IL-31 receptor was observed in the ovalicin treated group compared to the group without ovalicin treatment. To our knowledge, this is the first study to elucidate the anti-atopic mechanism of ovalicin, which could be an alternative to steroidal drugs commonly used for AD treatment.
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