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Dietary natural cocoa ameliorates disrupted circadian rhythms in locomotor activity and sleep-wake cycles in mice with chronic sleep disorders caused by psychophysiological stress. Nutrition 2020; 75-76:110751. [DOI: 10.1016/j.nut.2020.110751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/16/2019] [Accepted: 12/31/2019] [Indexed: 12/25/2022]
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Katayama S, Nakamura S. Emerging roles of bioactive peptides on brain health promotion. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.14076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shigeru Katayama
- Department of Agriculture Graduate School of Science and Technology Shinshu University 8304 Minamiminowa Kamiina Nagano 399‐4598 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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Shimizu A, Mitani T, Tanaka S, Fujii H, Maebuchi M, Amiya Y, Tanaka M, Matsui T, Nakamura S, Katayama S. Soybean-Derived Glycine-Arginine Dipeptide Administration Promotes Neurotrophic Factor Expression in the Mouse Brain. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7935-7941. [PMID: 29985005 DOI: 10.1021/acs.jafc.8b01581] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family, plays an important role in cognitive abilities, including memory and learning. We demonstrated that soybean protein hydrolysate (SPH) diet suppresses age-related cognitive decline via the upregulation of BDNF in a mouse model of senescence. Our purpose was to identify novel bioactive peptides in SPH, which enhance BDNF expression. We treated mouse primary astrocytes with SPH as well as with its positively charged chromatographic fraction. Significant increases in the expression of BDNF were observed in the treatment with positively charged fraction of SPH. Among the synthesized peptides, the dipeptide glycine-arginine (GR) increased BDNF expression in vitro, and LC-TOF-MS analysis showed the presence of GR in the SPH. Furthermore, its administration in vivo increased the expression of BDNF in the cerebral cortex and the number of neurons in hippocampus and cerebral cortex. These data indicate that GR might promote neurogenesis by upregulating BDNF levels.
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Affiliation(s)
- Ayano Shimizu
- Department of Agriculture, Graduate School of Science and Technology , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
| | - Takakazu Mitani
- Interdisciplinary Cluster for Cutting Edge Research (ICCER) , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
| | - Sachi Tanaka
- Department of Agriculture, Graduate School of Science and Technology , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
| | - Hiroshi Fujii
- Interdisciplinary Cluster for Cutting Edge Research (ICCER) , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
| | - Motohiro Maebuchi
- Research Institute for Creating the Future , Fuji Oil Holdings Inc. , 4-3, Kinunodai , Tsukuba , Ibaraki 300-2497 , Japan
| | - Yusuke Amiya
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture , Graduate School, Kyushu University , 744, Motooka , Nishi-ku Fukuoka 819-0395 , Japan
| | - Mitsuru Tanaka
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture , Graduate School, Kyushu University , 744, Motooka , Nishi-ku Fukuoka 819-0395 , Japan
| | - Toshiro Matsui
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture , Graduate School, Kyushu University , 744, Motooka , Nishi-ku Fukuoka 819-0395 , Japan
| | - Soichiro Nakamura
- Department of Agriculture, Graduate School of Science and Technology , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
| | - Shigeru Katayama
- Department of Agriculture, Graduate School of Science and Technology , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
- Interdisciplinary Cluster for Cutting Edge Research (ICCER) , Shinshu University , 8304 Minamiminowa Kamiina , Nagano 399-4598 , Japan
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