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Asano M, Nakano F, Nakatsukasa E, Tsuduki T. The 1975 type Japanese diet improves the gut microbial flora and inhibits visceral fat accumulation in mice. Biosci Biotechnol Biochem 2020; 84:1475-1485. [PMID: 32255390 DOI: 10.1080/09168451.2020.1747973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this study, the 1975 type Japanese diet was prepared and its effects and related mechanism were examined in mice. Mice were assigned to three experimental groups, the CD group fed a control diet, the MD group fed a modern Japanese diet (MD), and the JD group fed the 1975 type Japanese diet (JD) for 4 weeks. MD and JD were low protein, high fat, and high carbohydrate diets compared to the CD. Total white adipose tissue weights were significantly increased in the MD group compared to those in the CD group and were decreased in the JD group compared to those in the MD group. In the JD group, adipocyte hypertrophy was inhibited and Hsl mRNA expression was enhanced in epididymal adipose tissue and the number of bacteria associated with the production of short chain fatty acids was increased. Therefore, the JD inhibits lipid accumulation in white adipose tissue. ABBREVIATIONS Actb: β-actin; ALT: alanine aminotransferase; ANOVA: analyses of variance; AST: aspartate aminotransferase; Fas: fatty acid synthase; G6pdx: glucose 6-phosphate dehydrogenase; HE: hematoxylin and eosin; HOMA-IR: Homeostatic model assessment for insulin resistance; Hsl: hormone-sensitive lipase; JD: 1975 type Japanese diet; Leptin: leptin; MD: modern Japanese diet; Me: malic enzyme; NEFA: non-esterified fatty acids; PL: phospholipids; Pparδ: peroxisome proliferator-activated receptor delta; Pparγ: peroxisome proliferator-activated receptor gamma; qRT-PCR: quantitative reverse transcriptase polymerase chain reaction; SAMP8: senescence-accelerated prone 8; SEM: standard error of the mean; Srebp1c: Sterol regulatory element binding protein 1c; TBARS: thiobarbituric acid reactive substance; TC: total cholesterol; TG: Triacylglycerol; V3: variable regions 3.
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Affiliation(s)
- Masaki Asano
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University , Sendai, Japan
| | - Fumika Nakano
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University , Sendai, Japan
| | - Eriko Nakatsukasa
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University , Sendai, Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University , Sendai, Japan
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He C, Wu Q, Hayashi N, Nakano F, Nakatsukasa E, Tsuduki T. Carbohydrate-restricted diet alters the gut microbiota, promotes senescence and shortens the life span in senescence-accelerated prone mice. J Nutr Biochem 2019; 78:108326. [PMID: 31952014 DOI: 10.1016/j.jnutbio.2019.108326] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 10/08/2019] [Accepted: 12/17/2019] [Indexed: 02/07/2023]
Abstract
This study examined the effects of a carbohydrate-restricted diet on aging, brain function, intestinal bacteria and the life span to determine long-term carbohydrate-restriction effects on the aging process in senescence-accelerated prone mice (SAMP8). Three-week-old male SAMP8 were divided into three groups after a week of preliminary feeding. One group was given a controlled diet, while the others fed on high-fat and carbohydrate-restricted diets, respectively. The mice in each group were further divided into two subgroups, of which one was the longevity measurement group. The other groups fed ad libitum until the mice were 50 weeks old. Before the test period termination, passive avoidance test evaluated the learning and memory abilities. Following the test period, serum and various mice organs were obtained and submitted for analysis. The carbohydrate-restricted diet group exhibited significant decrease in the survival rate as compared to the other two diet groups. The passive avoidance test revealed a remarkable decrease in the learning and memory ability of carbohydrate-restricted diet group as compared to the control-diet group. Measurement of lipid peroxide level in tissues displayed a marked increase in the brain and spleen of carbohydrate-restricted diet group than the control-diet and high-fat diet groups. Furthermore, notable serum IL-6 and IL-1β level (inflammation indicators) elevations, decrease in Enterobacteria (with anti-inflammatory action), increase in inflammation-inducing Enterobacteria and lowering of short-chain fatty acids levels in cecum were observed in the carbohydrate-restricted diet group. Hence, carbohydrate-restricted diet was revealed to promote aging and shortening of life in SAMP8.
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Affiliation(s)
- Chaoqi He
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan
| | - Qiming Wu
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan
| | - Nao Hayashi
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan
| | - Fumika Nakano
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan
| | - Eriko Nakatsukasa
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan.
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OKOUCHI R, SAKANOI Y, TSUDUKI T. The Effect of Carbohydrate-Restricted Diets on the Skin Aging of Mice. J Nutr Sci Vitaminol (Tokyo) 2019; 65:S67-S71. [DOI: 10.3177/jnsv.65.s67] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ran OKOUCHI
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yuto SAKANOI
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Tsuyoshi TSUDUKI
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
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Yokoyama Y, Sasaki M, Sato K. Nutrition intake among the Japanese elderly: an intergenerational comparison based on national health and nutrition survey scores. Ann Hum Biol 2019; 46:311-322. [PMID: 31478392 DOI: 10.1080/03014460.2019.1662943] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Context: The average Japanese lifespan became the longest in the world in 1986. What factors give the Japanese this longevity? Washoku, or the traditional Japanese diet, is respected globally for its nutritionally-balanced and healthy eating habits. This uniquely Japanese way of eating may be one factor that helps extend the Japanese lifespan. Objective: To explain the nutrition intake characteristics of today's Japanese elderly compared with their children's generation and to discuss the association between nutrition intake and various diseases and health issues in the general adult population. Methods: This study compared the characteristics of nutrition status and nutrition intake among today's elderly and their children's generation by using National Health and Nutrition Survey scores. Results: Japanese elderly had high adequacy in all nutrients as well as a high intake of potatoes, pulses, vegetables, fruits, algae, and fish and shellfish compared with their children's generation. Conclusion: Nutrition intake among the Japanese elderly had the characteristics of washoku, but these characteristics were not passed on to the next generation. Extension of the average lifespan and improved health could be achieved by modifying nutrition intake, even after reaching the age of onset of lifestyle- and age-related diseases, typically the 50s.
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Affiliation(s)
- Yuta Yokoyama
- Faculty of Nutritional Sciences, Tohto University , Fukaya , Japan
| | - Masako Sasaki
- Faculty of Nutritional Sciences, Tohto University , Fukaya , Japan
| | - Kanae Sato
- Faculty of Nutritional Sciences, Tohto University , Fukaya , Japan
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Tsuduki T. Health Benefit of the Japanese Diet ~Exploring the Significance of Staple Food~. J JPN SOC FOOD SCI 2019. [DOI: 10.3136/nskkk.66.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agricultural Science, Tohoku University
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Asano M, Kushida M, Yamamoto K, Tomata Y, Tsuji I, Tsuduki T. Abdominal Fat in Individuals with Overweight Reduced by Consumption of a 1975 Japanese Diet: A Randomized Controlled Trial. Obesity (Silver Spring) 2019; 27:899-907. [PMID: 30985996 DOI: 10.1002/oby.22448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/28/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVE This study aimed to investigate whether the intake of the 1975 Japanese diet (JD) could reduce the amount of abdominal fat in people with overweight. METHODS Using a single-blind randomized controlled trial, the modern diet (MD) was compared with the 1975-type JD, which is based on the MD but includes five characteristics of the 1975 JD in an enhanced form. Overweight people were randomly assigned to an MD group (n = 30) and a JD group (n = 30). The participants consumed test diets that were provided three times a day for 28 days. Body composition measurements and blood biochemical examinations were performed before and after the test diet intake, and the proportions of change were compared. RESULTS Those in the JD group had significantly decreased BMI, fat mass, and levels of low-density lipoprotein cholesterol, glycated hemoglobin, and C-reactive protein (P = 0.002, 0.015, 0.014, 0.012, and 0.039, respectively) and significantly increased high-density lipoprotein cholesterol levels compared with those in the MD group (P = 0.020). CONCLUSIONS The intake of a diet with the characteristics of the 1975 JD may have beneficial effects on lipid metabolism in people with overweight and reduce the onset risk of metabolism-related disorders, such as obesity and diabetes.
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Affiliation(s)
- Masaki Asano
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Mamoru Kushida
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Yasutake Tomata
- Division of Epidemiology, Department of Health Informatics & Public Health, Graduate School of Medicine, Tohoku University School of Public Health, Sendai, Japan
| | - Ichiro Tsuji
- Division of Epidemiology, Department of Health Informatics & Public Health, Graduate School of Medicine, Tohoku University School of Public Health, Sendai, Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
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Miso (Fermented Soybean Paste) Suppresses Visceral Fat Accumulation in Mice, Especially in Combination with Exercise. Nutrients 2019; 11:nu11030560. [PMID: 30845686 PMCID: PMC6470805 DOI: 10.3390/nu11030560] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/21/2019] [Accepted: 03/01/2019] [Indexed: 12/16/2022] Open
Abstract
We investigated whether the difference in miso consumption between the Japanese diets of 1975 and 2010 has influenced the observed increase in diet-induced obesity. To recreate the 2010 and 1975 Japanese high-fat diets with the corresponding proportions of miso, freeze-dried miso was added to high-fat mouse feed at 1.6% and 2.6%, respectively. When 5-week-old male Institute of Cancer Research (ICR) mice were provided each of these diets ad libitum for 8 weeks, it was found that the white adipose tissue weight and adipocyte area were lower in mice receiving the 1975 diet than in those receiving the 2010 diet. Therefore, high miso consumption is one reason why the 1975 Japanese diet tended to not lead to obesity. Next, the combined effects of treadmill exercise and miso consumption were investigated. The mice were divided into three groups, which were provided either a high-fat diet (group C), a high-fat diet with exercise (group C + E), or a miso-supplemented high-fat diet with exercise (group M + E) for 8 weeks. In this experiment, the white adipose tissue weight and adipocyte area in group M + E were lower than in group C. When the mRNA expression of lipid metabolism-associated genes in adipose tissue was measured, we found that expression of Hsl (lipase, hormone sensitive), which is involved in lipolysis, and Pparγ (peroxisome proliferator activated receptor gamma), which regulates adipocyte differentiation upstream of Hsl, was increased in group M + E. These results clearly demonstrated that lipid accumulation in the adipose tissues is suppressed by miso consumption in combination with exercise.
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Ishikawa H, Guo X, Sugawara S, Iwagaki Y, Yamamoto K, Konno A, Nishiuchi M, Tsuduki T. Influence of Japanese diet consumption during pregnancy and lactation on lipid metabolism in offspring. Nutrition 2019; 58:69-76. [DOI: 10.1016/j.nut.2018.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 05/26/2018] [Accepted: 06/10/2018] [Indexed: 01/26/2023]
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Okouchi R, E S, Yamamoto K, Ota T, Seki K, Imai M, Ota R, Asayama Y, Nakashima A, Suzuki K, Tsuduki T. Simultaneous Intake of Euglena gracilis and Vegetables Exerts Synergistic Anti-Obesity and Anti-Inflammatory Effects by Modulating the Gut Microbiota in Diet-Induced Obese Mice. Nutrients 2019; 11:nu11010204. [PMID: 30669573 PMCID: PMC6356467 DOI: 10.3390/nu11010204] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/16/2019] [Accepted: 01/18/2019] [Indexed: 01/03/2023] Open
Abstract
We determined whether the anti-obesity effect provided by the consumption of Euglena gracilis (Euglena), which is rich in insoluble dietary fiber, could be enhanced by the co-consumption of vegetables with an abundance of soluble dietary fiber. Nine-week-old male C57BL/6J mice were divided into five groups as follows: group 1 received a normal diet, group 2 received a high-fat diet, and groups 3, 4, and 5 received high fat diets containing 0.3% paramylon, 1.0% Euglena, or 1.0% Euglena plus 0.3% vegetables (barley leaf, kale, and ashitaba), respectively. Mice were fed ad libitum until 18 weeks of age. Euglena intake significantly reduced visceral fat accumulation in obese mice, and co-consumption of vegetables enhanced this effect. Consumption of Euglena with vegetables reduced adipocyte area, suppressed the expression of genes related to fatty acid synthesis, upregulated genes related to adipocyte lipolysis, and suppressed serum markers of inflammation. Notably, we also observed an increase in the fraction of short-chain fatty acid-producing beneficial bacteria, a reduction in harmful bacteria that cause inflammation, and an increase in short-chain fatty acid production. Therefore, the co-consumption of vegetables enhanced the anti-obesity and anti-inflammatory effects of Euglena, likely by modulating the gut microbiota composition.
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Affiliation(s)
- Ran Okouchi
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan.
| | - Shuang E
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan.
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan.
| | - Toshikuni Ota
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Kentarou Seki
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Mayumi Imai
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Ryuki Ota
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Yuta Asayama
- Euglena Co., Ltd, Minato-ku, Tokyo 108-0014, Japan.
| | | | - Kengo Suzuki
- Euglena Co., Ltd, Minato-ku, Tokyo 108-0014, Japan.
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 981-8555, Japan.
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10
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Effects of the 1975 Japanese diet on the gut microbiota in younger adults. J Nutr Biochem 2018; 64:121-127. [PMID: 30502656 DOI: 10.1016/j.jnutbio.2018.10.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 10/11/2018] [Accepted: 10/29/2018] [Indexed: 12/14/2022]
Abstract
Japan is known for its longevity worldwide; the Japanese diet is thought to contribute to this longevity. However, the Japanese diet has become westernized over the past years, with a parallel increase in the incidence of lifestyle diseases. Thus, whether the modern Japanese diet is still healthy requires investigation. A diet with characteristics of the 1975 Japanese diet (JD) was previously shown to have beneficial effects on mice and humans. In this study, we examined whether intestinal bacteria are involved in the health benefits of this diet by analyzing changes in the composition of the fecal microbiota between humans who ingested the JD and those consuming a modern Japanese diet (MD). We also examined correlations between intestinal bacteria and biological parameters. A randomized controlled trial was performed to determine the effects of the 1975 JD compared to those of the MD. Subjects aged 20-29 years were randomly assigned to the JD (n=11) and MD (n=10) groups. Each subject consumed their respective diet three times per day for 28 days, and changes in intestinal bacteria before to after this period were evaluated. Four genera (unclassified Lachnospiraceae, Parabacteroides, Sutterella and unclassified Rikenellaceae) were significantly changed upon intake of the JD. Based on correlation analysis, relationships were found between changes in these genera and decreases in fat%; fat mass; and levels of blood glutamic oxaloacetic transaminase, blood triacylglycerols and hemoglobin A1c. These results suggest that changes in intestinal bacteria are involved in the health benefits of the JD.
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Wu Q, E S, Yamamoto K, Tsuduki T. Carbohydrate-restricted diet promotes skin senescence in senescence-accelerated prone mice. Biogerontology 2018; 20:71-82. [DOI: 10.1007/s10522-018-9777-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 09/29/2018] [Indexed: 02/04/2023]
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12
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Sakanoi Y, E S, Yamamoto K, Ota T, Seki K, Imai M, Ota R, Asayama Y, Nakashima A, Suzuki K, Tsuduki T. Simultaneous Intake of Euglena Gracilis and Vegetables Synergistically Exerts an Anti-Inflammatory Effect and Attenuates Visceral Fat Accumulation by Affecting Gut Microbiota in Mice. Nutrients 2018; 10:E1417. [PMID: 30282906 PMCID: PMC6213005 DOI: 10.3390/nu10101417] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 09/22/2018] [Accepted: 09/27/2018] [Indexed: 02/06/2023] Open
Abstract
We determined whether the benefits provided by the consumption of Euglena gracilis (Euglena), which is a unicellular photosynthesizing green alga and rich in insoluble dietary fiber paramylon, can be enhanced by the co-consumption of vegetables that are rich in soluble dietary fiber. Nine-week-old male C57BL/6J mice were divided into four groups: group 1 received normal diet, whereas groups 2, 3 and 4 received normal diet containing 0.3% paramylon, 1.0% Euglena, or 1.0% Euglena plus 0.3% vegetables (barley leaf, kale and ashitaba), respectively. Mice were fed ad libitum until 18 weeks of age. Euglena intake significantly decreased serum markers of inflammation and co-consumption of vegetables enhanced this reduction. Notably, we observed an increase in the fraction of beneficial bacteria producing short-chain fatty acids, a reduction in harmful bacteria that cause inflammation and an increase in short-chain fatty acid production. Visceral fat accumulation was also reduced. Subsequent analyses showed that co-consumption of Euglena with vegetables reduced adipocyte area, suppressed the expression of genes related to fatty acid synthesis and increased the expression of genes related to adipocyte growth and lipolysis. Therefore, co-consumption of Euglena with vegetables enhanced its anti-inflammatory effect and the inhibitory effect on visceral fat accumulation likely by modulating the composition of gut microbiota.
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Affiliation(s)
- Yuto Sakanoi
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 980-0845, Japan.
| | - Shuang E
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 980-0845, Japan.
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 980-0845, Japan.
| | - Toshikuni Ota
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Kentarou Seki
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Mayumi Imai
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Ryuki Ota
- Takeda Consumer Healthcare Company Limited, Chiyoda-ku, Tokyo 100-0005, Japan.
| | - Yuta Asayama
- Euglena Co., Ltd., Minato-ku Tokyo 108-0014, Japan.
| | | | - Kengo Suzuki
- Euglena Co., Ltd., Minato-ku Tokyo 108-0014, Japan.
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai 980-0845, Japan.
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Yamamoto K, Kushida M, Tsuduki T. The effect of dietary lipid on gut microbiota in a senescence-accelerated prone mouse model (SAMP8). Biogerontology 2018; 19:367-383. [DOI: 10.1007/s10522-018-9764-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/30/2018] [Indexed: 12/26/2022]
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14
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Kushida M, Okouchi R, Iwagaki Y, Asano M, Du MX, Yamamoto K, Tsuduki T. Fermented Soybean Suppresses Visceral Fat Accumulation in Mice. Mol Nutr Food Res 2018; 62:e1701054. [DOI: 10.1002/mnfr.201701054] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/02/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Mamoru Kushida
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Ran Okouchi
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Yui Iwagaki
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Masaki Asano
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Ming Xuan Du
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science; Graduate School of Agriculture; Tohoku University; Sendai 980-0845 Japan
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Yamamoto K, Iwagaki Y, Watanabe K, Nochi T, Aso H, Tsuduki T. Effects of a moderate-fat diet that is enriched with fish oil on intestinal lipid absorption in a senescence-accelerated prone mouse model. Nutrition 2018; 50:26-35. [DOI: 10.1016/j.nut.2017.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 10/10/2017] [Accepted: 10/29/2017] [Indexed: 12/13/2022]
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Ishikawa H, Guo X, Sugawara S, Iwagaki Y, Yamamoto K, Tsuduki T. Effect of the Japanese diet during pregnancy and lactation or post-weaning on the risk of metabolic syndrome in offspring. Biosci Biotechnol Biochem 2018; 82:515-524. [DOI: 10.1080/09168451.2018.1428788] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Abstract
We examined the effects on offspring of ingestion of the 1975 Japanese diet during pregnancy and lactation and after weaning in mice. Pregnant dams were divided into groups that were fed the Japanese diet or a control diet and raised until offspring were weaned. The offspring after weaning were further divided into groups that were raised on the Japanese diet or the control diet. Ingestion of the Japanese diet after weaning suppressed accumulation of visceral fat in offspring, and reduced the amount of lipids in serum and liver. This effect was weakened if the Japanese diet was only ingested during pregnancy and lactation. Therefore, it was suggested that ingestion of the Japanese diet of mothers during pregnancy and lactation weakens the lipid accumulation inhibitory effect of the Japanese diet in children.
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Affiliation(s)
- Haruna Ishikawa
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Xiaoxu Guo
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Saeko Sugawara
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Yui Iwagaki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Sendai, Japan
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Sugawara S, Kushida M, Iwagaki Y, Asano M, Yamamoto K, Tomata Y, Tsuji I, Tsuduki T. The 1975 Type Japanese Diet Improves Lipid Metabolic Parameters in Younger Adults: A Randomized Controlled Trial. J Oleo Sci 2018; 67:599-607. [DOI: 10.5650/jos.ess17259] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Saeko Sugawara
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Mamoru Kushida
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yui Iwagaki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Masaki Asano
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yasutake Tomata
- Division of Epidemiology, Department of Health Informatics and Public Health, Tohoku University School of Public Health, Graduate School of Medicine
| | - Ichiro Tsuji
- Division of Epidemiology, Department of Health Informatics and Public Health, Tohoku University School of Public Health, Graduate School of Medicine
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
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Abstract
The aim of this study was to develop a purified diet that mimics the characteristics of the Japanese diet using readily available materials with a simpler composition and a focus on quality, with the goal of facilitating performance of studies on the Japanese diet worldwide. The utility of the new diet was examined as a mimic of the standard Japanese diet for use in animal experiments. We examined whether a key characteristic of the Japanese diet of being less likely to cause obesity could be reproduced. The mimic diet had a balance of protein, fat and carbohydrate based on the 1975 Japanese diet, which is the least likely to cause obesity, and materials chosen with reference to the National Health and Nutrition Survey (NHNS). To examine similarities of the mimic diet with the model 1975 Japanese diet, we created a menu of the 1975 diet based on the NHNS and prepared the freeze-dried and powdered diet. The mimic diet, the 1975 Japanese diet, a control AIN-93G diet and a Western diet were fed to mice for 4 weeks. As a result, the mimic diet and the 1975 diet resulted in less accumulation of visceral fat and liver fat. Mice given these two diets showed similar effects. This indicates that the mimic diet used in this study has characteristics of the 1975 Japanese diet and could be used as a standard Japanese diet in animal experiments.
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Mizowaki Y, Sugawara S, Yamamoto K, Sakamoto Y, Iwagaki Y, Kawakami Y, Igarashi M, Tsuduki T. Comparison of the Effects of the 1975 Japanese Diet and the Modern Mediterranean Diet on Lipid Metabolism in Mice. J Oleo Sci 2017; 66:507-519. [DOI: 10.5650/jos.ess16241] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yui Mizowaki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Saeko Sugawara
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yu Sakamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yui Iwagaki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yuki Kawakami
- Faculty of Health and Welfare Science, Okayama Prefectural University
| | - Miki Igarashi
- Laboratory for Metabolic Homeostasis, Center for Integrative Medical Sciences, RIKEN Yokohama Branch
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
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Increased plasma levels of glucose-dependent insulinotropic polypeptide are associated with decreased postprandial energy expenditure after modern Japanese meals. Eur J Nutr 2016; 56:1693-1705. [PMID: 27112963 PMCID: PMC5486637 DOI: 10.1007/s00394-016-1216-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 04/15/2016] [Indexed: 12/14/2022]
Abstract
Purpose The nutritional changes that have accompanied the modernization of Japanese dietary patterns have led to significant increases in the number of people who are overweight or obese. This study aimed to clarify the effects of these nutritional changes on postprandial energy expenditure and the release of metabolism-regulating hormones. Methods The total daily energy content (20 % breakfast, 40 % lunch, and 40 % dinner) and macronutrient composition (carbohydrate/fat/protein) was 8807.3 kJ and 364.3:30.1:66.4 (g) for the traditional test diet and 9217.6 kJ and 331.7:66.1:76.9 (g) for the modern test diet. In experiment 1, nine healthy Japanese men participated in a crossover study during which they ingested a test diet comprising three meals; postprandial blood parameters were measured after each meal. In experiment 2, another ten men participated in a crossover study during which they ingested 2 meals, after which metabolic responses and blood variables were evaluated. Results The modern diet induced greater blood levels of glucose-dependent insulinotropic polypeptide (GIP) and ghrelin than did the traditional diet. The expected increase in postprandial energy expenditure (∆REE) tended to be dampened after the modern compared with the traditional diet. GIP was inversely correlated with ∆REE after lunch, and ghrelin was positively associated with ∆REE. Conclusion Both GIP and ghrelin are robust indicators of postprandial energy expenditure. The nutritional changes accompanying the modernization of Japanese dietary patterns may increase the levels of the anabolic intestinal hormone GIP, which is associated with ∆REE, in the Japanese population. The contribution of an increased ghrelin concentration to the decreased ∆REE after the modern diet warrants further investigation.
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Sakamoto Y, Yamamoto K, Hatakeyama Y, Tsuduki T. Effects of Fatty Acid Quality and Quantity in the Japanese Diet on the Suppression of Lipid Accumulation. J Oleo Sci 2016; 65:61-73. [DOI: 10.5650/jos.ess15150] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yu Sakamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Yu Hatakeyama
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University
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Yamamoto K, E S, Hatakeyama Y, Sakamoto Y, Honma T, Jibu Y, Kawakami Y, Tsuduki T. The Japanese diet from 1975 delays senescence and prolongs life span in SAMP8 mice. Nutrition 2016; 32:122-8. [DOI: 10.1016/j.nut.2015.07.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/24/2015] [Accepted: 07/08/2015] [Indexed: 11/30/2022]
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Yamamoto K, E S, Hatakeyama Y, Sakamoto Y, Tsuduki T. High-fat diet intake from senescence inhibits the attenuation of cell functions and the degeneration of villi with aging in the small intestine, and inhibits the attenuation of lipid absorption ability in SAMP8 mice. J Clin Biochem Nutr 2015; 57:204-11. [PMID: 26566305 PMCID: PMC4639591 DOI: 10.3164/jcbn.15-60] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 05/25/2015] [Indexed: 12/12/2022] Open
Abstract
We examined the effect of a high-fat diet from senescence as a means of preventing malnutrition among the elderly. The senescence-accelerated mouse P8 was used and divided into three groups. The 6C group was given a normal diet until 6 months old. The 12N group was given a normal diet until 12 months old. The 12F group was given a normal diet until 6 months old and then a high-fat diet until 12 months old. In the oral fat tolerance test, there was a decrease in area under the curve for serum triacylglycerol level in the 12N group and a significant increase in the 12F group, suggesting that the attenuation of lipid absorption ability with aging was delayed by a high-fat diet from senescence. To examine this mechanism, histological analysis in the small intestine was performed. As a result, the degeneration of villi with aging was inhibited by the high-fat diet. There was also a significant decrease in length of villus in the small intestine in the 12N group and a significant increase in the 12F group. The high-fat diet from senescence inhibited the degeneration of villi with aging in the small intestine, and inhibited the attenuation of lipid absorption ability.
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Affiliation(s)
- Kazushi Yamamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Aoba-ku, Sendai 981-8555, Japan
| | - Shuang E
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Aoba-ku, Sendai 981-8555, Japan
| | - Yu Hatakeyama
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Aoba-ku, Sendai 981-8555, Japan
| | - Yu Sakamoto
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Aoba-ku, Sendai 981-8555, Japan
| | - Tsuyoshi Tsuduki
- Laboratory of Food and Biomolecular Science, Graduate School of Agriculture, Tohoku University, Aoba-ku, Sendai 981-8555, Japan
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Kitano Y, Honma T, Hatakeyama Y, Jibu Y, Kawakami Y, Tsuduki T, Nakagawa K, Miyazawa T. Effects of Historical Differences in Components of the Japanese Diet on the Risk of Obesity in Mice. ACTA ACUST UNITED AC 2014. [DOI: 10.4327/jsnfs.67.73] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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