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Kawano K, Shobako M, Furukawa T, Toyooka T, Ohinata K. Fatty acid amides present in Camembert cheese improved cognitive decline after oral administration in mice. Neurosci Res 2024; 205:34-39. [PMID: 38458493 DOI: 10.1016/j.neures.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/19/2024] [Accepted: 03/06/2024] [Indexed: 03/10/2024]
Abstract
Herein, we investigated the effects of Camembert cheese (CC) and its fatty acid contents on cognitive function in mice by employing the object recognition test to evaluate hippocampus-dependent memory. Orally administered CC improved the cognitive decline induced by a high-fat diet. Next, we focused on myristamide (MA), oleamide, and stearamide, which are fatty acid amides produced during the fermentation process of CC. We found that oral administration of MA improved cognitive decline. Notably, an improvement was not observed using myristic acid, a free fatty acid that is not amidated. Thus, fatty acid amidation may contribute to the physiological activity. Moreover, we investigated changes in gene expression related to neurogenesis in the hippocampus. After MA administration, mRNA expression analysis indicated that MA increased hippocampal brain-derived neurotrophic factor expression.
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Affiliation(s)
- Kohei Kawano
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Maiko Shobako
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Taichi Furukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Tatsuhiro Toyooka
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan.
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Suzuki K, Okamatsu Y, Uchida R, Sasahara I, Takeshita M, Sato W, Kitahara Y, Murakami H. Effect of whey protein-derived decapeptide on mood status and blood variables in healthy adults: a randomized, double-blind, placebo-controlled cross-over trial. Eur J Nutr 2024:10.1007/s00394-024-03464-1. [PMID: 39085724 DOI: 10.1007/s00394-024-03464-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 07/01/2024] [Indexed: 08/02/2024]
Abstract
PURPOSE The importance of maintaining good mental health with overall well-being has recently drawn attention from various fields. Functional peptides found from various protein sources reportedly reduce mental health problems. We found a new decapeptide (AJI-801) from whey proteins, which can possibly improve mood status and increase blood acetyl-L-carnitine (ALC) and fibroblast growth factor 21 (FGF21) levels. In this study, we assessed the effects of a single intake of whey protein hydrolysate containing a high amount of AJI-801 (WPH) on blood variables and mood status. METHODS A randomized, double-blind, placebo-controlled cross-over trial of two doses of WPH (100 and 500 mg) was conducted. Participants, aged between 20 and 59 years with fatigue were allocated to two groups based on the WPH doses received, and set first test food in each study. The blood ALC and FGF21 levels at baseline and after 60, 120, and 180 min of test food intake were analyzed and the responses to the questionnaire items for mood status were obtained at baseline and after 60 and 180 min of test food intake. RESULTS There were no significant differences in the blood ALC and FGF21 levels between the two groups. As mood status, intake of 500-mg WPH (including 2.5-mg AJI-801) showed significant improvement in Depression/Dejection of the Profile of Mood States Questionnaire second edition and visual analog scale score for depression, as compared to the placebo. CONCLUSIONS Intake of AJI-801 500-mg WPH (including 2.5-mg AJI-801) contributes to the improvement of feeling down in healthy persons with fatigue. TRIAL REGISTRATION University Hospital Medical Information Network Clinical Trial Registry (UMIN 000046829).
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Affiliation(s)
- Katsuya Suzuki
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan.
| | - Yoriko Okamatsu
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Ryo Uchida
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Ikuko Sasahara
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Masamichi Takeshita
- Research Institute for Bioscience Products and Fine Chemicals, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Wataru Sato
- Research Institute for Bioscience Products and Fine Chemicals, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Yoshiro Kitahara
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
| | - Hitoshi Murakami
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc, Kanagawa, 210-8681, Japan
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Nakajima T, Shobako M, Kaneko K, Kurabayashi A, Sato M, Ohinata K. Ovomemolins: Egg-derived peptides that improved cognitive decline after oral administration in mice. FASEB Bioadv 2024; 6:177-188. [PMID: 38974115 PMCID: PMC11226991 DOI: 10.1096/fba.2023-00149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/05/2024] [Accepted: 03/13/2024] [Indexed: 07/09/2024] Open
Abstract
Eggs not only contain all the molecules necessary to nurture new life but are also rich in nutrients such as high-quality protein. For example, epidemiologic studies have shown that egg intake is positively correlated with cognitive function. Thus, we specifically examined the effect of ovalbumin, a major protein present in egg whites, on cognitive function. First, we found that an orally administered enzymatic digest of ovalbumin improves cognitive function in mice fed a high-fat diet. Then, we narrowed down candidate peptides based on the prediction of peptide production according to enzyme-substrate specificity and comprehensive peptide analysis of the digest. We found that three peptides, namely ILPEY, LYRGGLEP, and ILELP, improve cognitive function after oral administration. We also showed that ILPEY, LYRGGLEP, and ILELP were present in the digest and named them ovomemolins A (OMA), B, and C, respectively. Notably, ovomemolins are the first peptides derived from egg whites that have been shown to improve cognitive function. The cognitive improvement induced by OMA, the most abundant of the peptides in the digest, was inhibited by methyllycaconitine, an antagonist of α7nAChR, which is known to be related to memory. These results suggest that OMA improves cognitive function through the acetylcholine system. After OMA administration, brain-derived neurotrophic factor (BDNF) mRNA expression and the number of 5-bromo-2'-deoxyuridine-positive cells suggested that OMA increases hippocampal BDNF expression and neurogenesis.
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Affiliation(s)
- Takanobu Nakajima
- Division of Food Science and Biotechnology, Graduate School of AgricultureKyoto UniversityKyotoJapan
| | - Maiko Shobako
- Division of Food Science and Biotechnology, Graduate School of AgricultureKyoto UniversityKyotoJapan
| | - Kentaro Kaneko
- Division of Food Science and Biotechnology, Graduate School of AgricultureKyoto UniversityKyotoJapan
| | | | - Masaru Sato
- Department of Applied GenomicsKazusa DNA Research InstituteKisarazuJapan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of AgricultureKyoto UniversityKyotoJapan
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Asakura S, Kaneko K, Kawano K, Shobako M, Xu C, Sato M, Kurabayashi A, Suzuki H, Ito A, Higuchi Y, Nakayama R, Takahashi H, Ohinata K. Characterization of rice endosperm-derived antidepressant-like peptide (REAP): An orally active novel tridecapeptide derived from rice protein. Peptides 2024; 177:171184. [PMID: 38432550 DOI: 10.1016/j.peptides.2024.171184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/20/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
It is ideal to ingest bioactive substances from daily foods to stay healthy. Rice is the staple food for almost half of the human population. We found that an orally administered enzymatic digest of rice endosperm protein exhibits antidepressant-like effects in the tail suspension test (TST) using mice. A comprehensive peptide analysis of the digest using liquid chromatography-tandem mass spectrometry was performed, and a tridecapeptide QQFLPEGQSQSQK, detected in the digest, was chemosynthesized. Oral administration of the tridecapeptide exhibited antidepressant-like effects at a low dose comparable to classical antidepressant in the TST. This also exhibited anti-depressant-like effect in the forced swim test. We named it rice endosperm-derived antidepressant-like peptide (REAP). Intriguingly, intraperitoneal administration had no effect. Orally administered REAP(8-13) but not REAP(1-7) exhibited antidepressant-like activity, suggesting that the C-terminal structure is important for the antidepressant-like effect. We confirmed the presence of REAP, corresponding to rice glutelin type B4(130-142) and B5(130-142), in the digest. The effects of REAP were blocked by both dopamine D1 and D2 antagonists. These results suggest that it exerts its antidepressant-like activity through activation of the dopamine system. Taken together, oral administration of a novel tridecapeptide exhibited antidepressant-like effects via the dopamine system. This is the first report of a rice-derived peptide that exhibits antidepressant-like effects.
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Affiliation(s)
- Saho Asakura
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Kentaro Kaneko
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Kohei Kawano
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Maiko Shobako
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Chendong Xu
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan
| | - Masaru Sato
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Chiba, Kisarazu 292-0818, Japan
| | - Atsushi Kurabayashi
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Chiba, Kisarazu 292-0818, Japan
| | - Hideyuki Suzuki
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Chiba, Kisarazu 292-0818, Japan
| | - Akira Ito
- Rice Research Institute, Kameda Seika CO., LTD., 3-1-1Kameda-kogyodanchi, Konan, Niigata 950-0198, Japan
| | - Yuki Higuchi
- Rice Research Institute, Kameda Seika CO., LTD., 3-1-1Kameda-kogyodanchi, Konan, Niigata 950-0198, Japan
| | - Ryoko Nakayama
- Rice Research Institute, Kameda Seika CO., LTD., 3-1-1Kameda-kogyodanchi, Konan, Niigata 950-0198, Japan
| | - Hajime Takahashi
- Rice Research Institute, Kameda Seika CO., LTD., 3-1-1Kameda-kogyodanchi, Konan, Niigata 950-0198, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto 611-0011, Japan.
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Yasuda T, Kashima Y. A soy protein enzymatic digest mitigates Nrf2-related oxidative stress and attenuates depression-like behavior in a mouse model of sub-chronic restraint stress. Heliyon 2024; 10:e27826. [PMID: 38524573 PMCID: PMC10958348 DOI: 10.1016/j.heliyon.2024.e27826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/26/2024] Open
Abstract
Continuous oxidative stress conditions have been identified as a major cause of various neuropsychiatric disorders, including depression. The present study investigated the potential antidepressant-like effects of a soy protein enzymatic digest (SPD) containing soy-deprestatin, which is a soy-derived peptide with reported antidepressant-like effects, as well as its ability to mitigate oxidative stress in the brain caused by sub-chronic restraint stress. Mice were divided into two groups: a control group and restraint stress group. The restraint stress group was further divided into two groups administered water or SPD. After repeated short-time restraints over five days, we evaluated immobility times in the tail suspension test, and antioxidant enzyme activities, glutathione levels, oxidative stress maker levels, and the gene expression levels of Nrf2 and antioxidant enzymes in the brain. The results obtained showed that the oral administration of SPD reduced immobility times in mice exposed to restraint stress. In comparisons with the water-treated restraint group, the administration of SPD restored superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase activities and glutathione levels and prevented restraint stress-induced increases in malondialdehyde, carbonyl protein, and 8-OHdG levels in the restraint stress group. In addition, high expression levels of Nrf2, HO-1, NQO-1 and GCLC were observed in the SPD-treated restraint group. These results suggest that SPD attenuated repeated restraint stress-induced depression-like behaviors by mitigating oxidative stress through the activation of the Nrf2 signaling pathway.
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Affiliation(s)
- Takuwa Yasuda
- Global Healthcare Research Laboratory, UHA Mikakuto Co., Ltd., Osaka, Japan
| | - Yasuhiro Kashima
- Global Healthcare Research Laboratory, UHA Mikakuto Co., Ltd., Osaka, Japan
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Li Z, Dang Q, Wang P, Zhao F, Huang J, Wang C, Liu X, Min W. Food-Derived Peptides: Beneficial CNS Effects and Cross-BBB Transmission Strategies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20453-20478. [PMID: 38085598 DOI: 10.1021/acs.jafc.3c06518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Food-derived peptides, as dietary supplements, have significant effects on promoting brain health and relieving central nervous system (CNS) diseases. However, the blood-brain barrier (BBB) greatly limits their in-brain bioavailability. Thus, overcoming the BBB to target the CNS is a major challenge for bioactive peptides in the prevention and treatment of CNS diseases. This review discusses improvement in the neuroprotective function of food-derived active peptides in CNS diseases, as well as the source of BBB penetrating peptides (BBB-shuttles) and the mechanism of transmembrane transport. Notably, this review also discusses various peptide modification methods to overcome the low permeability and stability of the BBB. Lipification, glycosylation, introduction of disulfide bonds, and cyclization are effective strategies for improving the penetration efficiency of peptides through the BBB. This review provides a new prospective for improving their neuroprotective function and developing treatments to delay or even prevent CNS diseases.
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Affiliation(s)
- Zehui Li
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
- College of Food Science and Engineering, Jilin Agricultural University, ChangChun, Jilin 130118, P.R. China
| | - Qiao Dang
- College of Food Science and Engineering, Jilin Agricultural University, ChangChun, Jilin 130118, P.R. China
| | - Peng Wang
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
| | - Fanrui Zhao
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, P.R. China
| | - Jianqin Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, P.R. China
| | - Chongchong Wang
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, P.R. China
| | - Xingquan Liu
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
| | - Weihong Min
- College of Food and Health, Zhejiang A&F University, Hangzhou, Zhejiang 311300, P.R. China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, P.R. China
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Fatoki TH, Chukwuejim S, Udenigwe CC, Aluko RE. In Silico Exploration of Metabolically Active Peptides as Potential Therapeutic Agents against Amyotrophic Lateral Sclerosis. Int J Mol Sci 2023; 24:5828. [PMID: 36982902 PMCID: PMC10058213 DOI: 10.3390/ijms24065828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/11/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is regarded as a fatal neurodegenerative disease that is featured by progressive damage of the upper and lower motor neurons. To date, over 45 genes have been found to be connected with ALS pathology. The aim of this work was to computationally identify unique sets of protein hydrolysate peptides that could serve as therapeutic agents against ALS. Computational methods which include target prediction, protein-protein interaction, and peptide-protein molecular docking were used. The results showed that the network of critical ALS-associated genes consists of ATG16L2, SCFD1, VAC15, VEGFA, KEAP1, KIF5A, FIG4, TUBA4A, SIGMAR1, SETX, ANXA11, HNRNPL, NEK1, C9orf72, VCP, RPSA, ATP5B, and SOD1 together with predicted kinases such as AKT1, CDK4, DNAPK, MAPK14, and ERK2 in addition to transcription factors such as MYC, RELA, ZMIZ1, EGR1, TRIM28, and FOXA2. The identified molecular targets of the peptides that support multi-metabolic components in ALS pathogenesis include cyclooxygenase-2, angiotensin I-converting enzyme, dipeptidyl peptidase IV, X-linked inhibitor of apoptosis protein 3, and endothelin receptor ET-A. Overall, the results showed that AGL, APL, AVK, IIW, PVI, and VAY peptides are promising candidates for further study. Future work would be needed to validate the therapeutic properties of these hydrolysate peptides by in vitro and in vivo approaches.
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Affiliation(s)
- Toluwase Hezekiah Fatoki
- Department of Biochemistry, Federal University Oye-Ekiti, PMB 373, Oye 371104, Nigeria; (T.H.F.); (S.C.)
| | - Stanley Chukwuejim
- Department of Biochemistry, Federal University Oye-Ekiti, PMB 373, Oye 371104, Nigeria; (T.H.F.); (S.C.)
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Chibuike C. Udenigwe
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Rotimi E. Aluko
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Richardson Centre for Food Technology and Research, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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Kaneko K, Tokuyama Y, Taniguchi E, Abe S, Nakato J, Iwakura H, Sato M, Kurabayashi A, Suzuki H, Ito A, Higuchi Y, Nakayama R, Uchiyama K, Takahashi H, Ohinata K. Rice Endoplasmic Protein-Derived Peptides, Rice-Ghretropins A and B, Stimulate Ghrelin Release in MGN3-1 Cells and Increase Plasma Acylated Ghrelin and Food Intake in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:421-429. [PMID: 36580688 DOI: 10.1021/acs.jafc.2c05965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this study, we demonstrated that novel rice-derived bioactive peptides promote the secretion of ghrelin, an endogenous orexigenic hormone secreted from the stomach. The enzymatic digest of rice endosperm protein with subtilisin, a microorganism-derived enzyme, stimulated acylated ghrelin secretion in the ghrelin-releasing cell line MGN3-1 and increased food intake after oral administration in mice. By performing a comprehensive analysis based on structure-activity relationships, we selected candidate peptides from over 30,000 peptides in the rice digest. Among them, we found that QAFEPIRSV and TNPWHSPRQGSF, corresponding to the amino acid sequence of the rice endoplasmic proteins glutelin A1 or A2(52-60) and B1 or B2(31-42), respectively, stimulated acylated ghrelin release in MGN3-1 cells. We named them rice-ghretropins A and B. Pyroglutamate formation of rice-ghretropin A, [pyr1]-rice-ghretropin A, also promoted ghrelin secretion. Furthermore, oral administration of rice-ghretropins increased food intake, plasma ghrelin concentration, and small intestinal transit in mice. In addition, the subtilisin digest of the rice protein significantly increased food intake for 4 h in 9 month-old (control: 0.61 ± 0.049 g; digest: 0.83 ± 0.059 g) and 24 month-old mice (control: 0.52 ± 0.067 g; digest: 1.01 ± 0.064 g). In summary, we found that novel bioactive peptides, namely, rice-ghretropins, from the enzymatic digest of rice endosperm stimulated acylated ghrelin secretion and increased food intake. This is the first report of rice-derived exogenous bioactive peptides that increase acylated ghrelin secretion.
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Affiliation(s)
- Kentaro Kaneko
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yuki Tokuyama
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Eriko Taniguchi
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Shimon Abe
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Junya Nakato
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Iwakura
- The First Department of Medicine, Wakayama Medical University, Wakayama 841-8509, Japan
| | - Masaru Sato
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Atsushi Kurabayashi
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Hideyuki Suzuki
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Akira Ito
- Rice Research Institute, Kameda Seika CO., LTD. 3-1-1Kameda-kogyodanchi, Konan, Niigata, Niigata 950-0198, Japan
| | - Yuki Higuchi
- Rice Research Institute, Kameda Seika CO., LTD. 3-1-1Kameda-kogyodanchi, Konan, Niigata, Niigata 950-0198, Japan
| | - Ryoko Nakayama
- Rice Research Institute, Kameda Seika CO., LTD. 3-1-1Kameda-kogyodanchi, Konan, Niigata, Niigata 950-0198, Japan
| | - Kimiko Uchiyama
- Rice Research Institute, Kameda Seika CO., LTD. 3-1-1Kameda-kogyodanchi, Konan, Niigata, Niigata 950-0198, Japan
| | - Hajime Takahashi
- Rice Research Institute, Kameda Seika CO., LTD. 3-1-1Kameda-kogyodanchi, Konan, Niigata, Niigata 950-0198, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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Song Z, Cheng L, Liu Y, Zhan S, Wu Z, Zhang X. Plant-derived bioactive components regulate gut microbiota to prevent depression and depressive-related neurodegenerative diseases: Focus on neurotransmitters. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Sato K. Metabolic Fate and Bioavailability of Food-Derived Peptides: Are Normal Peptides Passed through the Intestinal Layer To Exert Biological Effects via Proposed Mechanisms? JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1461-1466. [PMID: 35104135 DOI: 10.1021/acs.jafc.1c07438] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Previous studies have demonstrated that the oral administration of food-derived peptides exerts beneficial effects on human health beyond conventional nutritional functions. In vitro studies have suggested potential mechanisms and active peptides. However, the levels of most food-derived peptides in the body are far lower than the concentrations used in the in vitro assays, with some exceptions. These facts suggest that food-derived peptides might be metabolized into active compounds or function via different mechanisms than the proposed mechanisms. This work briefly discusses the perspectives related to the metabolites of the food-derived peptides in the body.
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Affiliation(s)
- Kenji Sato
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwakecho, Kyoto 606 8502, Japan
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11
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Qian J, Zheng L, Su G, Huang M, Luo D, Zhao M. Identification and Screening of Potential Bioactive Peptides with Sleep-Enhancing Effects in Bovine Milk Casein Hydrolysate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11246-11258. [PMID: 34543014 DOI: 10.1021/acs.jafc.1c03937] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Casein tryptic hydrolysate (CTH) has been proven to possess stress-relieving and sleep-enhancing effects, but only one decapeptide YLGYLEQLLR (α-CZP) in CTH was reported to exhibit affinity for the benzodiazepine site of a GABAA receptor (GABAAR). This study aimed to compare the sleep-enhancing effects between CTH and α-CZP and to explore novel sleep-enhancing peptides. Our results showed that CTH significantly prolonged sleep duration in mice, which was almost 2-fold longer than that of α-CZP. The α-CZP in CTH was degraded more slowly than the synthetic α-CZP; meanwhile, CTH could release other potential sleep-enhancing peptides during gastrointestinal digestion. Additionally, two peptides YPVEPF and YFYPEL with strong sleep-enhancing activity were explored by virtual screening. Especially, YPVEPF could significantly prolong the sleep duration from 559.00 ± 272.24 to 2501.63 ± 1021.21 s and increase the sleep rate from 58.33 to 83.33% in mice. Moreover, YPVEPF and YFYPEL could bind with the Ser-205 and Phe-77 residues of GABAAR via hydrogen bonds and lipid contacts. They were largely released after digestion with 11.19 ± 0.15 and 1.78 ± 0.01 g/kg, respectively.
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Affiliation(s)
- Jingjing Qian
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510650, China
| | - Lin Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510650, China
| | - Guowan Su
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510650, China
| | - Mingtao Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510650, China
| | - Donghui Luo
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou 510650, China
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12
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Mizushige T. Neuromodulatory peptides: Orally active anxiolytic-like and antidepressant-like peptides derived from dietary plant proteins. Peptides 2021; 142:170569. [PMID: 33984426 DOI: 10.1016/j.peptides.2021.170569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/09/2021] [Accepted: 05/03/2021] [Indexed: 12/22/2022]
Abstract
Mental disorders are a severe health problem, and the number of patients is growing worldwide. Increased anxiety and decreased motivation due to excessive mental stress further accelerated the severity of the problem. Enzymatic digestion of food proteins produces bioactive peptides with various physiological functions, some of which exhibit neuromodulatory effects with oral administration. Recently, studies reported that some peptides produced from plant proteins such as soybeans, leaves, and grains exhibit emotional regulatory functions such as strong anxiolytic-like and antidepressant-like effects comparable to pharmaceuticals. Conventionally, researchers investigated bioactive peptides by fractionation of protein hydrolysates and structure-activity relationship. As a novel methodology for analyzing bioactive peptides, the information obtained by peptidomics simultaneous analysis of the digested fractions of proteins using mass spectrometry has been effectively utilized. Some small-sized peptides such as dipeptides and tripeptides released food-derived proteins show emotional regulating effects. Moreover, some middle-sized peptides produced after intestinal digestion may exhibit the emotional regulating effect via the vagus nerve, and the importance of the gut-brain axis is also focused. As the central mechanism of emotional regulation, it has been found that these plant-derived peptides regulated monoamine neurotransmitter signaling and hippocampal neurogenesis.
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Affiliation(s)
- Takafumi Mizushige
- Department of Applied Biological Chemistry, School of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya, Tochigi, 321-8505, Japan.
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13
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Hafeez Z, Benoit S, Cakir-Kiefer C, Dary A, Miclo L. Food protein-derived anxiolytic peptides: their potential role in anxiety management. Food Funct 2021; 12:1415-1431. [DOI: 10.1039/d0fo02432e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Could bioactive peptides from food proteins be used as prophylactic in the management of anxiety disorders?
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Affiliation(s)
| | - Simon Benoit
- Université de Lorraine
- CALBINOTOX
- F-54000 Nancy
- France
| | | | - Annie Dary
- Université de Lorraine
- CALBINOTOX
- F-54000 Nancy
- France
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14
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Distillation remnants of shochu, a traditional Japanese liquor, improve pork meat quality by reducing stress. Food Chem 2020; 318:126488. [PMID: 32151924 DOI: 10.1016/j.foodchem.2020.126488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 02/23/2020] [Accepted: 02/23/2020] [Indexed: 11/22/2022]
Abstract
Distillation remnants of Shochu, a traditional Japanese liquorare fed to livestock, but their effects on livestock health have not been investigated. Here, we investigated the effects of these remnants on pig stress and pork quality (N = 6/group). The remnants reduced plasma cortisol (17.94 ± 0.92 [control] and 10.59 ± 1.28 [sample]) and increased salivary IgA (6.06 ± 2.21 [control] and 21.60 ± 5.37 [sample]). Blind sensory assessments showed that, in remnant-fed pork, sirloin tenderness (3.18 ± 0.19 [control] and 4.27 ± 0.38 [sample]) and the juiciness, umami, and fat tastiness of fillets were improved. Oleic acid percentages were higher (35.23 ± 0.65 [control] and 37.87 ± 0.60 [sample]) in remnant-fed pork, contributing to a favorable sensory evaluation. Two-group comparisons were analyzed by student's t test. p < 0.05. This study promotes the reutilization of remnants to reduce livestock stress and improve meat quality.
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15
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Dipeptide tyrosyl-leucine exhibits antidepressant-like activity in mice. Sci Rep 2020; 10:2257. [PMID: 32042019 PMCID: PMC7010778 DOI: 10.1038/s41598-020-59039-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/23/2020] [Indexed: 12/11/2022] Open
Abstract
Depression is a worldwide health problem. In the present study, we found that a dipeptide, tyrosyl leucine (Tyr-Leu, YL), administered orally, intracerebroventricularly, or intraperitoneally exhibited a potent antidepressant-like activity in the forced swim and tail suspension tests in naïve mice. YL increased the amount of cells expressing c-Fos, a marker for neuronal activity, in the dentate gyrus of the hippocampus. YL increased bromo-2′-deoxyuridine-positive cells and doublecortin expression in the dentate gyrus of the hippocampus, suggesting that YL enhanced the proliferation of hippocampal progenitor cells in vivo and in vitro. YL did not affect hippocampal mRNA and protein expression of BDNF, which is a regulatory factor of both neurogenesis and depression-like behavior. Intriguingly, YL suppressed activation of the hypothalamo-pituitary-adrenal axis by forced swim stress. Moreover, other aromatic amino acid-leucines, Phe-Leu and Trp-Leu, also exhibited antidepressant-like activities, suggesting that the structure of aromatic amino acid-leucine may be important for antidepressant activity. In addition, bovine milk casein-derived peptide, Tyr-Leu-Gly (YLG), an anxiolytic peptide, exhibited an antidepressant-like activity. Our findings demonstrate that YL exhibits an antidepressant-like effect, moderates the stress response, and induces hippocampal neuronal proliferation through a signal pathway independent of BDNF.
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16
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Koyama D, Sasai M, Matsumura S, Inoue K, Ohinata K. A milk-derived pentapeptide reduces blood pressure in advanced hypertension in a CCK system-dependent manner. Food Funct 2020; 11:9489-9494. [DOI: 10.1039/d0fo01122c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Orally administered KFWGK exhibits potent and long-lasting antihypertensive effects in SHR with advanced hypertension, at which known hypotensive drugs are sometimes less effective. The minimum effective dose of KFWGK was 5 μg kg−1.
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Affiliation(s)
- Daiki Koyama
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Masaki Sasai
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Shigenobu Matsumura
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Kazuo Inoue
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
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17
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Nagai A, Mizushige T, Matsumura S, Inoue K, Ohinata K. Orally administered milk-derived tripeptide improved cognitive decline in mice fed a high-fat diet. FASEB J 2019; 33:14095-14102. [DOI: 10.1096/fj.201900621r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Akitoshi Nagai
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Takafumi Mizushige
- Department of Applied Biological Chemistry, Faculty of Agriculture, Utsunomiya University, Utsunomiya, Japan
| | - Shigenobu Matsumura
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Kazuo Inoue
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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18
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Ser-Tyr and Asn-Ala, vasorelaxing dipeptides found by comprehensive screening, reduce blood pressure via different age-dependent mechanisms. Aging (Albany NY) 2019; 11:9492-9499. [PMID: 31685714 PMCID: PMC6874431 DOI: 10.18632/aging.102400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/26/2019] [Indexed: 11/25/2022]
Abstract
To understand the changes in physiological responses due to aging, a number of bioactive probes based on different signal transduction pathways are necessary. In this study, we comprehensively and systematically investigated changes in blood vessel function with age using a 336-dipeptide library. In the early stage of hypertension, the most potent vasorelaxant dipeptide was Ser-Tyr (SY) in the mesenteric artery isolated from spontaneously hypertensive rats (SHR). SY-induced vasorelaxation and anti-hypertensive effects were blocked by L-NAME, an inhibitor of nitric oxide synthase (NOS), suggesting that SY activates the NO system. On the other hand, the patterns of dipeptides with vasorelaxation activity in early and advanced stages of hypertension were different. In the advanced stage, the most potent vasorelaxing dipeptide was Asn-Ala (NA). Orally administered NA (1.5 mg/kg) reduced the blood pressure in the advanced stage, at which drugs were sometimes less effective, and the anti-hypertensive effects lasted for 6 hr. The NA-induced vasorelaxation and anti-hypertensive activity was blocked by lorglumide, an antagonist of the cholecystokinin CCK1 receptor, suggesting that NA activated the CCK system. Taken together, in the early and advanced stages of hypertension, SY and NA exhibited vasorelaxing and anti-hypertensive effects via the NO and CCK systems, respectively.
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19
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Nakato J, Aoki H, Tokuyama Y, Yamamoto Y, Iwakura H, Matsumura S, Inoue K, Ohinata K. Comprehensive analysis of a dipeptide library to identify ghrelin release-modulating peptides. FEBS Lett 2019; 593:2637-2645. [PMID: 31254351 DOI: 10.1002/1873-3468.13522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/20/2019] [Accepted: 06/27/2019] [Indexed: 12/28/2022]
Abstract
We performed a comprehensive analysis of ghrelin release-modulating activity of a dipeptide library using MGN3-1, a ghrelin-producing cell line. We found that most dipeptides suppress ghrelin secretion, whereas the N-terminal Ser-containing dipeptides and a few others stimulate it. N-terminal amino acid residues, but not C-terminal residues, play a dominant role in the effects of dipeptides. Among dipeptides, Leu-Ile (LI) and Ser-Val (SV) most strongly suppress and stimulate ghrelin secretion, respectively. LI activates Gi signaling and SV acts via the MAPK pathway. Orally administered LI and SV reduce and increase plasma ghrelin levels and food intake in mice, respectively. In conclusion, LI and SV, found based on the comprehensive screening of a dipeptide library, modulate ghrelin secretion in vitro and in vivo.
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Affiliation(s)
- Junya Nakato
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Hayato Aoki
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Yuki Tokuyama
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Yuta Yamamoto
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Hiroshi Iwakura
- The First Department of Medicine, Wakayama Medical University, Japan
| | - Shigenobu Matsumura
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Kazuo Inoue
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
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20
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Ogiwara M, Ota W, Mizushige T, Kanamoto R, Ohinata K. Enzymatic digest of whey protein and wheylin-1, a dipeptide released in the digest, increase insulin sensitivity in an Akt phosphorylation-dependent manner. Food Funct 2018; 9:4635-4641. [DOI: 10.1039/c8fo00919h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Wheylin-1 is the first whey-derived peptide that increases insulin sensitivity in an Akt phosphorylation-dependent manner and lowers blood glucose levels.
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Affiliation(s)
- Maiko Ogiwara
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Wakana Ota
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Takafumi Mizushige
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Ryuhei Kanamoto
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Kousaku Ohinata
- Division of Food Science and Biotechnology
- Graduate School of Agriculture
- Kyoto University
- Kyoto 611-0011
- Japan
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