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Article Publish Status: FREE
Abstract Title:

Effect of the11/19-B1 Strain on Atopic Dermatitis in a Clinical Test and Mouse Model.

Abstract Source:

Nutrients. 2020 Mar 14 ;12(3). Epub 2020 Mar 14. PMID: 32183266

Abstract Author(s):

Takato Suzuki, Kyoko Nishiyama, Koji Kawata, Kotaro Sugimoto, Masato Isome, Shigeo Suzuki, Ruriko Nozawa, Yoko Ichikawa, Yoshihisa Watanabe, Tatsuo Suzutani

Article Affiliation:

Takato Suzuki

Abstract:

Some lactic acid bacteria (LAB) are known to improve atopic dermatitis (AD) through the regulation and stimulation of the host immune system. In this study, we found that ingestion of yogurt containing11/19-B1 strain (11/19-B1) daily for 8 weeks significantly improved the severity scoring of atopic dermatitis (SCORAD) system score from 38.8± 14.4 to 24.2 ± 12.0 in children suffering from AD. We tried to identify which LAB species among the five species contained in the test yogurt contributed to the improvement in AD pathology using an AD mouse model induced by repeated application of 1-fluoro-2, 4-dinitrobenzene (DNFB). AD-like skin lesions on the dorsal skin and ear were most improved by11/19-B1 intake among the five LAB species. In addition, analysis of CD4+ T cell subsets in Peyer's patches (PPs) and cervical lymph nodes (CLNs) indicated that the intake of11/19-B1 generally suppressed all subsets related to inflammation, i.e., Th1, Th2 and Th17, instead of activating the suppressive system, Treg, in the AD mouse model. Histological observations showed ingestion of11/19-B1 significantly suppressed severe inflammatory findings, such as inflammatory cell filtration, epidermal erosion and eosinophil infiltration. These results suggest that the immunomodulatory effects of11/19-B1 contribute to improvements in AD pathology.

Study Type : Animal Study

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