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Katayama S, Yamazaki R, Umise H, Han HP, Mihara T, Uchiyama K, Takahashi H, Nakamura S. Lacticaseibacillus paracasei K71 Alleviates UVB-Induced Skin Barrier Dysfunction by Attenuating Inflammation via Increased IL-10 Production in Mice. Mol Nutr Food Res 2023; 67:e2200212. [PMID: 37471174 DOI: 10.1002/mnfr.202200212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/05/2023] [Indexed: 07/22/2023]
Abstract
SCOPE Ultraviolet B (UVB) radiation causes skin barrier dysfunction, leading to decreased water-holding capacity, impaired epidermal barrier function, and increased skin thickness. This study investigates the protective effects of oral administration of Lacticaseibacillus paracasei K71 against skin barrier dysfunction in UVB-irradiated mice. METHODS AND RESULTS Mice are fed diets with or without K71 and irradiated with UVB three times a week for 12 weeks. Oral administration of K71 suppresses UVB-induced decrease in stratum corneum water content, mitigates the increase of transepidermal water loss, and decreases epidermal thickness of the dorsal skin. Treatment with K71 reverses the upregulation of inflammatory cytokines and the activation of nuclear factor-κB induced by UVB irradiation and upregulates the expression of anti-inflammatory IL-10 in the dorsal skin. Notable upregulation of IL-10 is observed in the spleens of K71-treated mice. K71 treatment enhances IL-10 production in J774.1 macrophages; however, this enhancement is diminished by inhibiting K71 phagocytosis and TLR3. Furthermore, transfection using K71 RNAs significantly increases IL-10 production. CONCLUSION These results indicate that K71 may alleviate UVB-induced skin barrier dysfunction by attenuating inflammation via increasing IL-10 production and that K71 RNAs may induce IL-10 production in macrophages. Therefore, K71 may be beneficial for preventing skin barrier dysfunction.
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Affiliation(s)
- Shigeru Katayama
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
| | - Rio Yamazaki
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
| | - Hikaru Umise
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
| | - Hsu Pei Han
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
| | - Toshihiro Mihara
- Kameda Seika Co., Ltd., 3-1-1 Kameda-Kogyodanchi, Konan, Niigata, 950-0198, Japan
| | - Kimiko Uchiyama
- Kameda Seika Co., Ltd., 3-1-1 Kameda-Kogyodanchi, Konan, Niigata, 950-0198, Japan
| | - Hajime Takahashi
- Kameda Seika Co., Ltd., 3-1-1 Kameda-Kogyodanchi, Konan, Niigata, 950-0198, Japan
| | - Soichiro Nakamura
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598, Japan
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