Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume 82, Issue 4, Pages 709-715Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09168451.2017.1417022
Keywords
The Japanese diet; principal component analysis; CE-TOFMS(capillary electrophoresis time-off-light mass spectrometry); LC -TO FMS(liquid chromatography time-off-light mass spectrometry); stress
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We aimed to find new physiological effects of the Japanese diet. First, to determine the key components in serum from mice fed the 1975 diet, serum from mice fed the 1960, 1975, 1990 or 2005 Japanese diet was analyzed using CE-TOFMS and LC-TOFMS. Based on these results, the key components were determined by principal component analysis. Among the identified compounds, GABA was included. Therefore, a stress reduction effect was inferred as a novel physiological effect of this diet. Next, we tested whether the 1975 diet had an actual stress reduction effect in mice. Mice were given the 1975 diet or a control diet for 4weeks, after which they were divided into restraint stress and non-stress groups. Mice fed the 1975 diet had significantly decreased stress parameters compared with those fed the control diet. These results provide the first evidence that the 1975 Japanese diet has a stress reduction effect.
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