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植物由来乳酸菌ミヤビスLB(Lactobacillus brevis)の摂取が乾燥肌の女性の肌状態に及ぼす効果
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JPY
Abstract
Objective The aim of this study was to evaluate the intake of lactic bacteria (Lactobacillus brevis)on skin conditions in women who had mild dry skin conditions. Methods Ten female subjects(average of 35.1±8.6 years old)who had mild dry skin conditions received lactic bacteria(4 g;~4⊠1010cells)daily for 8 weeks, and skin conditions including skin hydration state, transepidermal water loss (TEWL), and skin viscoelasticity were evaluated. Results The intake of lactic bacteria for 8 weeks significantly improved TEWL in the left forearm(from 7.35±1.61 to 6.83±1.27 g╱m2h;P<0.05 by paired Studentʼs t︱test). Regarding the skin viscoelasticity, the parameters R5(net elasticity)and R7(the ratio of elastic recovery to the total deformation)significantly increased after 8 weeks of the intake of lactic bacteria(from 0.403±0.055 to 0.433±0.034Ur╱Ue and from 0.268 ±0.045 to 0.289±0.032Ur╱Uf, respectively;P<0.05 by paired Studentʼs t-test). A questionnaire revealed that subjective skin conditions significantly improved after the intake of lactic bacteria for 8 weeks. Conclusions The intake of lactic bacteria is suggested to improve both objective and subjective quality of skin conditions.
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