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Bjerknes C, Wubshet SG, Rønning SB, Afseth NK, Currie C, Framroze B, Hermansen E. Glucoregulatory Properties of a Protein Hydrolysate from Atlantic Salmon ( Salmo salar): Preliminary Characterization and Evaluation of DPP-IV Inhibition and Direct Glucose Uptake In Vitro. Mar Drugs 2024; 22:151. [PMID: 38667768 PMCID: PMC11050766 DOI: 10.3390/md22040151] [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: 02/23/2024] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Metabolic disorders are increasingly prevalent conditions that manifest pathophysiologically along a continuum. Among reported metabolic risk factors, elevated fasting serum glucose (FSG) levels have shown the most substantial increase in risk exposure. Ultimately leading to insulin resistance (IR), this condition is associated with notable deteriorations in the prognostic outlook for major diseases, including neurodegenerative diseases, cancer risk, and mortality related to cardiovascular disease. Tackling metabolic dysfunction, with a focus on prevention, is a critically important aspect for human health. In this study, an investigation into the potential antidiabetic properties of a salmon protein hydrolysate (SPH) was conducted, focusing on its potential dipeptidyl peptidase-IV (DPP-IV) inhibition and direct glucose uptake in vitro. Characterization of the SPH utilized a bioassay-guided fractionation approach to identify potent glucoregulatory peptide fractions. Low-molecular-weight (MW) fractions prepared by membrane filtration (MWCO = 3 kDa) showed significant DPP-IV inhibition (IC50 = 1.01 ± 0.12 mg/mL) and glucose uptake in vitro (p ≤ 0.0001 at 1 mg/mL). Further fractionation of the lowest MW fractions (<3 kDa) derived from the permeate resulted in three peptide subfractions. The subfraction with the lowest molecular weight demonstrated the most significant glucose uptake activity (p ≤ 0.0001), maintaining its potency even at a dilution of 1:500 (p ≤ 0.01).
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Affiliation(s)
- Christian Bjerknes
- Hofseth Biocare ASA, Keiser Wilhelms Gate 24, 6003 Ålesund, Norway; (C.C.); (B.F.); (E.H.)
| | | | | | | | - Crawford Currie
- Hofseth Biocare ASA, Keiser Wilhelms Gate 24, 6003 Ålesund, Norway; (C.C.); (B.F.); (E.H.)
| | - Bomi Framroze
- Hofseth Biocare ASA, Keiser Wilhelms Gate 24, 6003 Ålesund, Norway; (C.C.); (B.F.); (E.H.)
| | - Erland Hermansen
- Hofseth Biocare ASA, Keiser Wilhelms Gate 24, 6003 Ålesund, Norway; (C.C.); (B.F.); (E.H.)
- Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Larsgårdsvegen 2, 6009 Ålesund, Norway
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Ianiro G, Niro A, Rosa L, Valenti P, Musci G, Cutone A. To Boost or to Reset: The Role of Lactoferrin in Energy Metabolism. Int J Mol Sci 2023; 24:15925. [PMID: 37958908 PMCID: PMC10650157 DOI: 10.3390/ijms242115925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
Many pathological conditions, including obesity, diabetes, hypertension, heart disease, and cancer, are associated with abnormal metabolic states. The progressive loss of metabolic control is commonly characterized by insulin resistance, atherogenic dyslipidemia, inflammation, central obesity, and hypertension, a cluster of metabolic dysregulations usually referred to as the "metabolic syndrome". Recently, nutraceuticals have gained attention for the generalized perception that natural substances may be synonymous with health and balance, thus becoming favorable candidates for the adjuvant treatment of metabolic dysregulations. Among nutraceutical proteins, lactoferrin (Lf), an iron-binding glycoprotein of the innate immune system, has been widely recognized for its multifaceted activities and high tolerance. As this review shows, Lf can exert a dual role in human metabolism, either boosting or resetting it under physiological and pathological conditions, respectively. Lf consumption is safe and is associated with several benefits for human health, including the promotion of oral and gastrointestinal homeostasis, control of glucose and lipid metabolism, reduction of systemic inflammation, and regulation of iron absorption and balance. Overall, Lf can be recommended as a promising natural, completely non-toxic adjuvant for application as a long-term prophylaxis in the therapy for metabolic disorders, such as insulin resistance/type II diabetes and the metabolic syndrome.
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Affiliation(s)
- Giusi Ianiro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Antonella Niro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Luigi Rosa
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (P.V.)
| | - Piera Valenti
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (P.V.)
| | - Giovanni Musci
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Antimo Cutone
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
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Penggalih MHST, Praditya GN, Rizqiansyah CY, Setyawardani A, Purnomo AF, Maulana RA, Gunawan WB, Subali D, Kurniawan R, Mayulu N, Taslim NA, Hardinsyah H, Sutanto YS, Nurkolis F. Marine-derived protein: peptide bioresources for the development of nutraceuticals for improved athletic performance. Front Sports Act Living 2023; 5:1281397. [PMID: 37964773 PMCID: PMC10642366 DOI: 10.3389/fspor.2023.1281397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/17/2023] [Indexed: 11/16/2023] Open
Affiliation(s)
| | | | | | - Astuti Setyawardani
- Medical Student of Faculty of Medicine, University of Jember-Soebandi Regional Hospital, Jember, Indonesia
- Internship Doctor, Kanjuruhan General Hospital, Malang, Indonesia
| | - Athaya Febriantyo Purnomo
- Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Reza Achmad Maulana
- Nutrition Science, Faculty of Public Health, Ahmad Dahlan Univetsity, Yogjakarta, Indonesia
| | - William Ben Gunawan
- Alumnus of Nutrition Science, Faculty of Medicine, Diponegoro University, Semarang, Indonesia
| | - Dionysius Subali
- Department of Biotechnology, Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Rudy Kurniawan
- Diabetes Connection Care, Eka Hospital Bumi Serpong Damai, Tangerang, Indonesia
| | - Nelly Mayulu
- Department of Nutrition, Faculty of Health Science, Muhammadiyah Manado University, Manado, Indonesia
| | - Nurpudji Astuti Taslim
- Division of Clinical Nutrition, Department of Nutrition, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - Hardinsyah Hardinsyah
- Division of Applied Nutrition, Department of Community Nutrition, Faculty of Human Ecology, IPB University, Bogor, Indonesia
| | - Yosef Stefan Sutanto
- Department of Physical Medicine and Rehabilitation, Prof. R. D. Kandou General Hospital, Sam Ratulangi University, Manado, Indonesia
| | - Fahrul Nurkolis
- Department of Biological Sciences, State Islamic University of Sunan Kalijaga (UIN Sunan Kalijaga), Yogyakarta, Indonesia
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Giglio BM, Lobo PCB, Pimentel GD. Effects of whey protein supplementation on adiposity, body weight, and glycemic parameters: A synthesis of evidence. Nutr Metab Cardiovasc Dis 2023; 33:258-274. [PMID: 36543706 DOI: 10.1016/j.numecd.2022.09.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 11/25/2022]
Abstract
AIMS The aim of this review was to analyze the evidence of whey protein supplementation on body weight, fat mass, lean mass and glycemic parameters in subjects with overweight or type 2 diabetes mellitus (T2DM) undergoing calorie restriction or with ad libitum intake. DATA SYNTHESIS Overweight and obesity are considered risk factors for the development of chronic noncommunicable diseases such as T2DM. Calorie restriction is a dietary therapy that reduces weight and fat mass, promotes the improvement of glycemic parameters, and decreases muscle mass. The maintenance of muscle mass during weight loss is necessary in view of its implication in preventing chronic diseases and improving functional capacity and quality of life. The effects of increased protein consumption on attenuating muscle loss and reducing body fat during calorie restriction or ad libitum intake in overweight individuals are discussed. Some studies have demonstrated the positive effects of whey protein supplementation on improving satiety and postprandial glycemic control in short term; however, it remains unclear whether long-term whey protein supplementation can positively affect glycemic parameters. CONCLUSIONS Although whey protein is considered to have a high nutritional quality, its effects in the treatment of overweight, obese individuals and those with T2DM undergoing calorie restriction or ad libitum intake are still inconclusive.
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Affiliation(s)
- Bruna M Giglio
- Faculty of Nutrition, Federal University of Goias, Goiânia, GO, Brazil
| | - Patrícia C B Lobo
- Faculty of Nutrition, Federal University of Goias, Goiânia, GO, Brazil
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Pan MV, Cadiz RE, Mameloco EJG, Traifalgar RFM. Squid industry by-product hydrolysate supplementation enhances growth performance of Penaeus monodon fed plant protein-based diets without fish meal. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.1027753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The poor growth of aquatic animals fed with diets containing high plant proteins has been attributed to low diet acceptability and feed value. Supplementation of protein hydrolysate, with high contents of free amino acids and soluble low molecular weight peptides, may increase the acceptability and feed value of a plant protein-based diet. In the present work, squid processing by-products were enzymatically hydrolyzed and used as a supplement in a plant protein-based diet, without fish meal, of Penaeus monodon to fully maximize the utilization of this marine resource. The hydrolysate was incorporated at 0, 0.5, and 1% levels in P. monodon diets containing 0 and 10% fish meal levels. Growth, digestive enzyme activities, muscle growth-, gut pro-inflammatory and immune-related gene expressions, and muscle morphometric measurements were evaluated as biological indices in an 8-week feeding trial. The squid by-product hydrolysate produced in the present study contains 90.25% protein, 5.84% lipid, and 3.91% ash, and has a molecular weight of 3.76 kDa. Supplementation at 1% hydrolysate in the experimental shrimp diet without fish meal resulted in the highest growth performance associated with increased feed intake, efficient feed and nutrient conversion and retention, enhanced digestive enzyme activities, upregulation of muscle growth- and immune-related genes, and suppression of the gut pro-inflammatory gene. The growth promotion is also linked with a significant increase in muscle mean fiber area, which suggests hypertrophic growth in shrimp. Generally, the supplementation of 1% squid by-product hydrolysate supported the growth of P. monodon fed on a plant protein-based diet without fish meal.
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A review on mechanisms of action of bioactive peptides against glucose intolerance and insulin resistance. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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The Novel Peptide Chm-273s Has Therapeutic Potential for Metabolic Disorders: Evidence from In Vitro Studies and High-Sucrose Diet and High-Fat Diet Rodent Models. Pharmaceutics 2022; 14:pharmaceutics14102088. [PMID: 36297523 PMCID: PMC9611607 DOI: 10.3390/pharmaceutics14102088] [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: 08/01/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to develop a novel peptide potentially applicable for the treatment of metabolic conditions, such as obesity and type 2 diabetes (T2D). We identified CHM-273S from the list of peptides from milk hydrolysate obtained by HPLC/MS-MS. In vitro analysis of primary murine fibroblasts indicated the potential of CHM-273S to upregulate IRS2 mRNA expression. CHM-273S showed a prominent anorexigenic effect in mice with the induction of a key mechanism of leptin signaling via STAT3 in the hypothalamus as a possible effector. In the animal model of metabolic disease, CHM-273S alleviated glucose intolerance and insulin resistance, and induced phosphorylation of Akt at Ser473 and Thr308 in the hepatocytes of high-sucrose diet-fed rats. In a murine model of T2D, CHM-273S mitigated high-fat diet-induced hyperglycemia and insulin resistance and improved low-grade inflammation by diminishing serum TNFα. Mice treated with chronic CHM-273S had a significant reduction in body weight, with a lower visceral fat pad weight and narrow adipocytes. The effects of the peptide administration were comparable to those of metformin. We show the potential of CHM-273S to alleviate diet-induced metabolic alterations in rodents, substantiating its further development as a therapeutic for obesity, T2D, and other metabolic conditions.
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Mehra R, Kumar H, Kumar N, Ranvir S, Jana A, Buttar HS, Telessy IG, Awuchi CG, Okpala COR, Korzeniowska M, Guiné RP. Whey proteins processing and emergent derivatives: An insight perspective from constituents, bioactivities, functionalities to therapeutic applications. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104760] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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König D, Kohl J, Jerger S, Centner C. Potential Relevance of Bioactive Peptides in Sports Nutrition. Nutrients 2021; 13:nu13113997. [PMID: 34836255 PMCID: PMC8622853 DOI: 10.3390/nu13113997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/27/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022] Open
Abstract
Bioactive peptides are physiologically active peptides mostly derived from proteins following gastrointestinal digestion, fermentation or hydrolysis by proteolytic enzymes. It has been shown that bioactive peptides can be resorbed in their intact form and have repeatedly been shown to have a positive effect on health-related parameters such as hypertension, dyslipoproteinemia, inflammation and oxidative stress. In recent years, there has been increasing evidence that biologically active peptides could also play an important role in sports nutrition. Current studies have shown that bioactive peptides could have a positive impact on changes in body composition and muscular performance, reduce muscle damage following exercise and induce beneficial adaptions within the connective tissue. In the following overview, potential mechanisms as well as possible limitations regarding the sports-related effect of bioactive peptides and their potential mechanisms are presented and discussed. In addition, practical applications will be discussed on how bioactive peptides can be integrated into a nutritional approach in sports to enhance athletic performance as well as prevent injuries and improve the rehabilitation process.
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Affiliation(s)
- Daniel König
- Centre for Sports Science and University Sports, Institute for Nutrition, Exercise and Health, University of Vienna, Auf der Schmelz, 61150 Vienna, Austria
- Department for Nutritional Science, Institute for Nutrition, Exercise and Health, University of Vienna, 61150 Vienna, Austria
- Correspondence: ; Tel.: +43-1-4277-59130
| | - Jan Kohl
- Department of Sport and Sport Science, University of Freiburg, 79102 Freiburg, Germany; (J.K.); (S.J.); (C.C.)
| | - Simon Jerger
- Department of Sport and Sport Science, University of Freiburg, 79102 Freiburg, Germany; (J.K.); (S.J.); (C.C.)
| | - Christoph Centner
- Department of Sport and Sport Science, University of Freiburg, 79102 Freiburg, Germany; (J.K.); (S.J.); (C.C.)
- Praxisklinik Rennbahn, CH-4132 Muttenz, Switzerland
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10
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Anti-diabetic properties of bioactive components from fish and milk. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Medeiros CS, de Sousa Neto IV, Silva KKS, Cantuária APC, Rezende TMB, Franco OL, de Cassia Marqueti R, Freitas-Lima LC, Araujo RC, Yildirim A, Mackenzie R, Alves Almeida J. The Effects of High-Protein Diet and Resistance Training on Glucose Control and Inflammatory Profile of Visceral Adipose Tissue in Rats. Nutrients 2021; 13:1969. [PMID: 34201185 PMCID: PMC8227719 DOI: 10.3390/nu13061969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 12/26/2022] Open
Abstract
High-protein diets (HPDs) are widely accepted as a way to stimulate muscle protein synthesis when combined with resistance training (RT). However, the effects of HPDs on adipose tissue plasticity and local inflammation are yet to be determined. This study investigated the impact of HPDs on glucose control, adipocyte size, and epididymal adipose inflammatory biomarkers in resistance-trained rats. Eighteen Wistar rats were randomly assigned to four groups: normal-protein (NPD; 17% protein total dietary intake) and HPD (26.1% protein) without RT and NPD and HPD with RT. Trained groups received RT for 12 weeks with weights secured to their tails. Glucose and insulin tolerance tests, adipocyte size, and an array of cytokines were determined. While HPD without RT induced glucose intolerance, enlarged adipocytes, and increased TNF-α, MCP-1, and IL1-β levels in epididymal adipose tissue (p < 0.05), RT diminished these deleterious effects, with the HPD + RT group displaying improved blood glucose control without inflammatory cytokine increases in epididymal adipose tissue (p < 0.05). Furthermore, RT increased glutathione expression independent of diet (p < 0.05). RT may offer protection against adipocyte hypertrophy, pro-inflammatory states, and glucose intolerance during HPDs. The results highlight the potential protective effects of RT to mitigate the maladaptive effects of HPDs.
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Affiliation(s)
- Claudia Stela Medeiros
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ivo Vieira de Sousa Neto
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Keemilyn Karla Santos Silva
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ana Paula Castro Cantuária
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- S-Inova Biotech, Porgrama de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
| | - Rita de Cassia Marqueti
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Leandro Ceotto Freitas-Lima
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Ronaldo Carvalho Araujo
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Azize Yildirim
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Richard Mackenzie
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Jeeser Alves Almeida
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
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D'Souza K, Acquah C, Mercer A, Paudel Y, Pulinilkunnil T, Udenigwe CC, Kienesberger PC. Whey peptides exacerbate body weight gain and perturb systemic glucose and tissue lipid metabolism in male high-fat fed mice. Food Funct 2021; 12:3552-3561. [PMID: 33900305 DOI: 10.1039/d0fo02610g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Consumption of milk-derived whey proteins has been demonstrated to have insulin-sensitizing effects in mice and humans, in part through the generation of bioactive whey peptides. While whey peptides can prevent insulin resistance in vitro, it is unclear whether consumption of whey peptides can prevent obesity-induced metabolic dysfunction in vivo. We sought to determine whether whey peptides consumption can protect from high fat (HF) diet-induced obesity and dysregulation of glucose homeostasis. Male C57BL/6J mice were fed either a low or HF diet for 13 weeks. HF diet fed mice were provided drinking water with no addition (control), undigested whey protein isolate (WPI, 1 mg ml-1) or whey protein hydrolysate (WPH, 1 mg ml-1) throughout the diet regimen. Mice consuming WPH gained more body weight and were more glucose intolerant compared to those consuming WPI or water only. Despite increased body weight gain, perigonadal adipose tissue weight and lipid accumulation were unchanged. However, excess lipids accumulated ectopically in the liver and skeletal muscle in mice consuming WPH, which was associated with elevated inflammatory markers systemically and in adipose tissue, liver, and skeletal muscle. In skeletal muscle, mitochondrial fat oxidation and electron transport chain proteins were decreased with WPH consumption, indicative of mitochondrial dysfunction. Taken together, our results demonstrate that WPH, but not WPI, exacerbates HF-induced body weight gain and impairs glucose homeostasis, which is accompanied by increased inflammation, ectopic fat accumulation and mitochondrial dysfunction. Thus, our results argue against the use of dietary whey peptide supplementation as a preventative option against HF diet-induced metabolic dysfunction.
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Affiliation(s)
- Kenneth D'Souza
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, New Brunswick E2L 4L5, Canada.
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DE Almeida PC, DA Rosa Lima T, Avila ETP, Tolazzi GJ, Cavalcante LP, Navalta JW, Tibana RA, DE Souza RL, Segri NJ, DE Souza ÉC, Vieira RC, Voltarelli FA. High-Protein Diet Associated with Resistance Training Improves Performance and Decreases Adipose Index in Rats. INTERNATIONAL JOURNAL OF EXERCISE SCIENCE 2020; 13:1366-1381. [PMID: 33042363 PMCID: PMC7523897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The study tested the hypothesis that a high protein diet based on isolated whey protein (IWP) associated with strength training improves performance and reduces body fat without promoting health damage. Male Wistar rats, 45 days old, were divided into four groups (n = 8/group): normoprotein sedentary (IWP 14%; NS); hyperprotein sedentary (IWP 35%; HS); normoprotein trained (IWP 14%; NT) and hyperprotein trained (IWP 35%; HT). All groups performed the maximum load test at the beginning and after the vertical ladder training protocol for 6 weeks (3x/week). The performance improved in HT when compared to other groups. There was no difference in the plasma levels of testosterone, IGF-1 and the hematological parameters remained normal. The relative weights of the kidneys were higher in the groups fed with high protein; the liver was higher in HT compared to NS and NT, and the heart was higher in HS compared to NS and NT. Concerning relative muscle weight, quadriceps, and gastrocnemius, HT showed higher value compared to NT. Diet containing 35% isolate whey protein associated with resistance training improved performance as well as increased muscles and organs weight of the animals, without damaging the tissues related to protein metabolism (confirmed by unchanged hematological parameters), which may minimize the risk of developing cardiometabolic disorders.
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Affiliation(s)
- Paula Caroline DE Almeida
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - Thiago DA Rosa Lima
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - Eudes Thiago Pereira Avila
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - Geovane JosÉ Tolazzi
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - LetÍcia Pereira Cavalcante
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | | | - Ramires Alsamir Tibana
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - Roberto Lopes DE Souza
- Graduate Program in Veterinary Sciences, Faculty of Veterinary Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | - Neuber JosÉ Segri
- Department of Statistics, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
| | | | - Roberto Carlos Vieira
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
- State University of Mato Grosso, Cáceres, Mato Grosso, BRAZIL
| | - FabrÍcio Azevedo Voltarelli
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, BRAZIL
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A biotechnological approach for the production of branched chain amino acid containing bioactive peptides to improve human health: A review. Food Res Int 2020; 131:109002. [PMID: 32247480 DOI: 10.1016/j.foodres.2020.109002] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/21/2019] [Accepted: 01/12/2020] [Indexed: 12/20/2022]
Abstract
Improper nutrition provokes many types of chronic diseases and health problems, which consequently are associated with particularly high costs of treatments. Nowadays, consumer's interest in healthy eating is shifting towards specific foods or food ingredients. As a consequence, bioactive peptides as a promising source of health promoting food additives are currently an intensely debated topic in research. Process design is still on its early stages and is significantly influenced by important preliminary decisions. Thus, parameters like peptide bioactivity within the product, selection of the protein source, enzyme selection for hydrolysis, peptide enrichment method, as well as stability of the peptides within the food matrix and bioavailability are sensitive decision points, which have to be purposefully coordinated, as they are directly linked to amino acid content and structure properties of the peptides. Branched chain amino acids (BCAA) are essential components for humans, possessing various important physiologic functions within the body. Incorporated within peptide sequences, they may induce dual functions, when used as nutraceuticals in functional food, thus preserving the foodstuff and prevent several widespread diseases. Furthermore, there is evidence that consuming this peptide-class can be a nutritional support for elderly people or improve human health to prevent diseases caused by incorrect nutrition. Based on the knowledge about the role of BCAA within various peptide functions, discussed in the review, special attention is given to different approaches for systematic selection of the protein source and enzymes used in hydrolysis, as well as suitable peptide enrichment methods, thereby showing current trends in research.
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Roquetto AR, Moura CS, de Almeida Santos-Junior V, Oliveira POS, Machado KIA, Carvalho GCBC, Risso EM, Amaya-Farfan J. Moderate intake of BCAA-rich protein improves glucose homeostasis in high-fat-fed mice. J Nutr Biochem 2020; 80:108332. [PMID: 32217465 DOI: 10.1016/j.jnutbio.2019.108332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 11/22/2019] [Accepted: 12/20/2019] [Indexed: 02/01/2023]
Abstract
Notwithstanding the fact that dietary branched-chain amino acids (BCAAs) have been considered to be a cause of insulin resistance (IR), evidence indicates that BCAA-rich whey proteins (WPs) do not lead to IR in animals consuming high-fat (HF) diets and may instead improve glucose homeostasis. To address the role of BCAA-rich WP as dietary protein in IR and inflammatory response, we fed C57BL/6J mice either high-fat (HF) or low-fat (LF) diets formulated with moderate protein levels (13% w/w) of either WP or hydrolyzed WP (WPH) and compared them with casein (CAS) as a reference. The muscle and plasma free amino acid profiles, inflammatory parameters and glycemic homeostasis were examined. While the LF/CAS diet promoted the rise in triglycerides and inflammatory parameters, the HF/CAS induced typical IR responses and impaired biochemical parameters. No differences in plasma BCAAs were detected, but the HF/WPH diet led to a twofold increase in gastrocnemius muscle free amino acids, including BCAAs. In general, ingestion of WPH was effective at averting or attenuating the damage caused by both the LF and HF diets. No high concentrations of BCAAs in the plasma or signs of IR were found in those mice fed an HF diet along with the hydrolyzed whey proteins. It is concluded that consumption of BCAA-rich whey proteins, especially WPH, does not result in the development of IR.
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Affiliation(s)
- Aline Rissetti Roquetto
- Food and Nutrition Program, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
| | - Carolina Soares Moura
- Food and Nutrition Program, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
| | | | | | - Karla Idelça Aires Machado
- Food and Nutrition Program, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
| | | | - Eder Müller Risso
- Food and Nutrition Program, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
| | - Jaime Amaya-Farfan
- Food and Nutrition Program, School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
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Egg white hydrolysate enhances insulin sensitivity in high-fat diet-induced insulin-resistant rats via Akt activation. Br J Nutr 2019; 122:14-24. [PMID: 30982477 DOI: 10.1017/s0007114519000837] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Agents that block the renin-angiotensin system (RAS) improve glucoregulation in the metabolic syndrome disorder. We evaluated the effects of egg white hydrolysate (EWH), previously shown to modulate the protein abundance of RAS component in vivo, on glucose homeostasis in diet-induced insulin-resistant rats. Sprague-Dawley rats were fed a high-fat diet (HFD) for 6 weeks to induce insulin resistance. They were then randomly divided into four groups receiving HFD or HFD supplemented with different concentrations of EWH (1, 2 and 4 %) for another 6 weeks in the first trial. In the second trial, insulin-resistant rats were divided into two groups receiving only HFD or HFD+4 % EWH for 6 weeks. Glucose homeostasis was assessed by oral glucose tolerance and insulin tolerance tests. Insulin signalling and protein abundance of RAS components, gluconeogenesis enzymes and PPARγ were evaluated in muscle, fat and liver. Adipocyte morphology and inflammatory markers were evaluated. In vivo administration of EWH increased insulin sensitivity, improved oral glucose tolerance (P < 0·0001) and reduced systemic inflammation (P < 0·05). EWH potentiated insulin-induced Akt phosphorylation in muscle (P = 0·0341) and adipose tissue (P = 0·0276), but minimal differences in the protein abundance of tissue RAS components between the EWH and control groups were observed. EWH treatment also reduced adipocyte size (P = 0·0383) and increased PPARγ2 protein abundance (P = 0·0237). EWH treatment yielded positive effects on the inflammatory profile, glucose tolerance, insulin sensitivity and adipocyte differentiation in HFD-induced insulin resistance rats. The involvement of local RAS activity requires further investigation.
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Mohamed RS, Marrez DA, Salem SH, Zaghloul AH, Ashoush IS, Farrag ARH, Abdel-Salam AM. Hypoglycemic, hypolipidemic and antioxidant effects of green sprouts juice and functional dairy micronutrients against streptozotocin-induced oxidative stress and diabetes in rats. Heliyon 2019; 5:e01197. [PMID: 30839934 PMCID: PMC6365801 DOI: 10.1016/j.heliyon.2019.e01197] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/27/2018] [Accepted: 01/29/2019] [Indexed: 01/05/2023] Open
Abstract
Hyperglycemia, the mark normal for diabetes and associated disorders are the main goals of natural diabetes therapies. In this context, the present research was designed to study the effects of fenugreek sprouts juice (FS), barley sprouts juice (BS), cell-free probiotic extract (cell-free PE), whey protein hydrolysate (WPH) and their mixture on diabetic rats. Free radical scavenging activity, total phenolic contents (TPC) and total flavonoid contents (TFC) of each item mentioned were determined. Diabetes was induced through the injection of male rats with a single intraperitoneal dose (45 mg/kg) of streptozotocin. After the development of diabetes, diabetic rats were orally administered daily with 1ml of with fenugreek sprouts juice, barley sprouts juice, cell-free probiotic extract, whey protein hydrolysate or their mixture until the end of the study period (45 day). Oral administration of fenugreek sprouts juice, barley sprouts juice, cell-free probiotic extract, whey protein hydrolysate and their mixture to diabetic rats significantly reduced fasting blood glucose levels and improved the lipid profile. All the studied items limit the reductions of haemoglobin concentrations and plasma α-amylase activities. Also all the studied items suppressed the elevation of malondialdehyde values and the reduction of catalase activities. Histopathological investigation of pancreas, liver and kidneys of the diabetic rats showed histological alterations. On the other hand, supplementations with the tested materials lead to relieving these injuries. Results revealed that fenugreek sprouts juice, barley sprouts juice, cell-free probiotic extract, whey protein hydrolysate and their mixture had promising effects towards hyperglycemia and associated disorders.
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Affiliation(s)
- Rasha S. Mohamed
- Nutrition and Food Sciences Department, National Research Centre, Dokki, Cairo, Egypt
| | - Diaa A. Marrez
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Cairo, Egypt
| | - Salah H. Salem
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Cairo, Egypt
| | - Ahmed H. Zaghloul
- Dairy Science Department, National Research Centre, Dokki, Cairo, Egypt
| | - Ihab S. Ashoush
- Food Science Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
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Avila ETP, da Rosa Lima T, Tibana RA, de Almeida PC, Fraga GA, de Souza Sena M, Corona LFP, Navalta JW, Rezaei S, Ghayomzadeh M, Damazo AS, Prestes J, Voltarelli FA. Effects of high-protein diet containing isolated whey protein in rats submitted to resistance training of aquatic jumps. Nutrition 2018; 53:85-94. [DOI: 10.1016/j.nut.2018.01.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/26/2018] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
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Ahmadi-Kani Golzar F, Fathi R, Mahjoub S. High-fat diet leads to adiposity and adipose tissue inflammation: the effect of whey protein supplementation and aerobic exercise training. Appl Physiol Nutr Metab 2018; 44:255-262. [PMID: 30107135 DOI: 10.1139/apnm-2018-0307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There is little understanding about dietary proteins and their potential contribution to obesity-induced inflammation. This study investigates the effect of 10 weeks of aerobic training and whey protein (WP) supplementation on visceral adipose tissue inflammation in rats fed a high-fat diet (HFD). In the first phase, which lasted 9 weeks, 40 male Wistar rats were randomly divided into 2 groups: (1) normal diet (n = 8), and (2) HFD (n = 32). In the second phase, rats fed an HFD were randomly assigned into 4 groups (n = 8/group): (1) sedentary, (2) WP, (3) aerobic training, and (4) WP + aerobic training. The aerobic training was performed for 10 weeks, 5 days/week at 21 m/min, 15% incline, for 60 min/day. HFD significantly increased body weight, adiposity index, fat pads weight, glucose levels, and insulin resistance index compared with the normal diet. Also, levels of tumor necrosis factor alpha (TNF-α), monocyte chemoattractant protein-1 (MCP-1), hypoxia inducible factor 1 alpha (HIF-1α), and vascular endothelial growth factor A (VEGF-A) in adipose tissue and serum levels of TNF-α were increased in the HFD group. Glucose levels, insulin resistance index, and triglycerides were reduced only by WP, independently of aerobic training. Both the aerobic training and WP reduced the fat pads weight and levels of TNF-α, HIF-1α, and VEGF-A in adipose tissue. Nevertheless, the levels of MCP-1 in adipose tissue and serum levels of TNF-α and MCP-1 were not reduced significantly by WP or aerobic training. These findings suggest that both aerobic training and WP supplementation lead to a reduction in adiposity and ameliorate obesity-induced inflammation in visceral adipose tissue.
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Affiliation(s)
| | - Rozita Fathi
- a Faculty of Sport Sciences, University of Mazandaran, Babolsar, Mazandaran, Iran
| | - Soleiman Mahjoub
- b Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Science, Babol, Iran
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20
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Tian Y, Heng D, Xu K, Liu W, Weng X, Hu X, Zhang C. cGMP/PKG-I Pathway-Mediated GLUT1/4 Regulation by NO in Female Rat Granulosa Cells. Endocrinology 2018; 159:1147-1158. [PMID: 29300939 DOI: 10.1210/en.2017-00863] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/21/2017] [Indexed: 12/16/2022]
Abstract
Nitric oxide (NO) is a multifunctional gaseous molecule that plays important roles in mammalian reproductive functions, including follicular growth and development. Although our previous study showed that NO mediated 3,5,3'-triiodothyronine and follicle-stimulating hormone-induced granulosa cell development via upregulation of glucose transporter protein (GLUT)1 and GLUT4 in granulosa cells, little is known about the precise mechanisms regulating ovarian development via glucose. The objective of the present study was to determine the cellular and molecular mechanism by which NO regulates GLUT expression and glucose uptake in granulosa cells. Our results indicated that NO increased GLUT1/GLUT4 expression and translocation in cells, as well as glucose uptake. These changes were accompanied by upregulation of cyclic guanosine monophosphate (cGMP) level and cGMP-dependent protein kinase (PKG)-I protein content. The results of small interfering RNA (siRNA) analysis showed that knockdown of PKG-I significantly attenuated gene expression, translocation, and glucose uptake. Moreover, the PKG-I inhibitor also blocked the above processes. Furthermore, NO induced cyclic adenosine monophosphate response element binding factor (CREB) phosphorylation, and CREB siRNA attenuated NO-induced GLUT expression, translocation, and glucose uptake in granulosa cells. These findings suggest that NO increases cellular glucose uptake via GLUT upregulation and translocation, which are mediated through the activation of the cGMP/PKG pathway. Meanwhile, the activated CREB is also involved in the regulation. These findings indicate that NO has an important influence on the glucose uptake of granulosa cells.
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Affiliation(s)
- Ye Tian
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Dai Heng
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Kaili Xu
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Wenbo Liu
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Xuechun Weng
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Xusong Hu
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
| | - Cheng Zhang
- College of Life Science, Capital Normal University, Beijing, People's Republic of China
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Carvalho GCBC, Moura CS, Roquetto AR, Barrera-Arellano D, Yamada AT, Santos AD, Saad MJA, Amaya-Farfan J. Impact ofTrans-Fats on Heat-Shock Protein Expression and the Gut Microbiota Profile of Mice. J Food Sci 2018; 83:489-498. [DOI: 10.1111/1750-3841.13997] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 01/19/2023]
Affiliation(s)
| | - Carolina Soares Moura
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
| | - Aline Rissetti Roquetto
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
| | - Daniel Barrera-Arellano
- Food Technology Dept., Oils and Fats Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-970
| | - Aureo Tatsumi Yamada
- Biochemistry and Tissue Biology Dept., Inst. of Biology; Univ. of Campinas; Campinas SP Brazil 13083-970
| | - Andrey dos Santos
- Internal Medicine Dept., School of Medical Sciences; Univ. of Campinas; Campinas SP Brazil 13083-887
| | - Mário José Abdalla Saad
- Internal Medicine Dept., School of Medical Sciences; Univ. of Campinas; Campinas SP Brazil 13083-887
| | - Jaime Amaya-Farfan
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
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Jakubowicz D, Wainstein J, Landau Z, Ahren B, Barnea M, Bar-Dayan Y, Froy O. High-energy breakfast based on whey protein reduces body weight, postprandial glycemia and HbA 1C in Type 2 diabetes. J Nutr Biochem 2017; 49:1-7. [PMID: 28863364 DOI: 10.1016/j.jnutbio.2017.07.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/27/2017] [Accepted: 07/07/2017] [Indexed: 01/28/2023]
Abstract
Acute studies show that addition of whey protein at breakfast has a glucose-lowering effect through increased incretin and insulin secretion. However, whether this is a long-term effect in Type 2 diabetes is unknown. Fifty-six Type 2 diabetes participants aged 58.9±4.5 years, BMI 32.1±0.9 kg/m2 and HbA1C 7.8±0.1% (61.6±0.79 mmol/mol) were randomized to one of 3 isocaloric diets with similar lunch and dinner, but different breakfast: 1) 42 g total protein, 28 g whey (WBdiet, n=19); 2) 42 g various protein sources (PBdiet, n=19); or 3) high-carbohydrate breakfast, 17 g protein from various sources (CBdiet, n=18). Body weight and HbA1C were examined after 12 weeks. All participants underwent three all-day meal challenges for postprandial glycemia, insulin, C-peptide, intact glucagon-like peptide 1 (iGLP-1), ghrelin and hunger and satiety scores. Overall postprandial AUCglucose was reduced by 12% in PBdiet and by 19% in WBdiet, compared with CBdiet (P<.0001). Compared with PBdiet and CBdiet, WBdiet led to a greater postprandial overall AUC for insulin, C-peptide, iGLP-1 and satiety scores, while postprandial overall AUC for ghrelin and hunger scores were reduced (P<.0001). After 12 weeks, HbA1C was reduced after WBdiet by 0.89±0.05% (11.5±0.6 mmol/mol), after PBdiet by 0.6±0.04% (7.1±0.31 mmol/mol) and after CBdiet by 0.36±0.04% (2.9±0.31 mmol/mol) (P<.0001). Furthermore, the participants on WBdiet lost 7.6±0.3 kg, PBdiet 6.1±0.3 kg and CBdiet 3.5±0.3 kg (P<.0001). Whey protein-based breakfast is an important adjuvant in the management of Type 2 diabetes.
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Affiliation(s)
- Daniela Jakubowicz
- Diabetes Unit, Wolfson Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Holon, Israel; Department of Internal Medicine, Diabetes Unit, Hospital de Clinicas Caracas, Central University, Caracas, Venezuela.
| | - Julio Wainstein
- Diabetes Unit, Wolfson Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Holon, Israel
| | - Zohar Landau
- Diabetes Unit, Wolfson Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Holon, Israel
| | - Bo Ahren
- Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Maayan Barnea
- Department of Molecular Genetics, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Yosefa Bar-Dayan
- Diabetes Unit, Wolfson Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Holon, Israel
| | - Oren Froy
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.
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Maekawa Y, Sugiyama A, Takeuchi T. Lactoferrin potentially facilitates glucose regulation and enhances the incretin effect. Biochem Cell Biol 2017; 95:155-161. [DOI: 10.1139/bcb-2016-0082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Lactoferrin (Lf) is known for its physiologically pleiotropic properties. In this study, we investigated whether Lf affects glycemic regulation, including glucose absorption from the small intestine. Bovine Lf (bLf, 100 mg/kg body mass) was administered to rats by intraperitoneal injection before intravenous (intravenous glucose tolerance test, IVGTT) or oral glucose administration (oral glucose tolerance test, OGTT). With IVGTT, bLf pretreatment had no significant effect on plasma levels of glucose or insulin. With OGTT, the bLf treatment group tended to show lower plasma levels of glucose than the control group at and after the 15 min peak, and decreased levels of plasma glucose at 180 min. The change in plasma levels of insulin from 0 to 30 min was higher in the bLf treatment group than in the control group. Total plasma glucose-dependent insulinotropic polypeptide (GIP) was lowered at 60 min by the bLf treatment, while an immediate increase in total plasma glucagon-like peptide-1 (GLP-1) was observed within the bLf group undergoing OGTT. In addition, bLf was associated with an increase in the amount of glucose absorbed into the everted jejunum sac. These results suggest that Lf could suppress hyperglycemia, accompanied by elevated plasma levels of insulin via transiently accelerating GLP-1 secretion, and that Lf even enhances glucose absorption from the small intestine.
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Affiliation(s)
- Yuta Maekawa
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
| | - Akihiko Sugiyama
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
| | - Takashi Takeuchi
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
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Maekawa Y, Sugiyama A, Takeuchi T. Lactoferrin ameliorates corticosterone-related acute stress and hyperglycemia in rats. J Vet Med Sci 2016; 79:412-417. [PMID: 27941304 PMCID: PMC5326950 DOI: 10.1292/jvms.16-0498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We aimed to assess the effects of lactoferrin (Lf) on glycemic regulatory responses under restraint stress (RS) in rats. Bovine Lf (bLf, 100 mg/kg) was intraperitoneally administered to rats before oral saline administration or oral glucose tolerance test (OGTT) following 60 min of RS load. In the case of oral saline administration, RS significantly raised plasma glucose, but bLf did not affect the level. Plasma glucose in OGTT showed an overall lower transition in the bLf group, and the levels at 30 and 180 min or the area under the curve (AUC) were significantly decreased. Although bLf suppressed an increase in plasma corticosterone during RS, the levels of plasma insulin, epinephrine and glucagon were not changed by the bLf treatment.
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Affiliation(s)
- Yuta Maekawa
- Department of Veterinary Medicine, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
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Oseguera Toledo ME, Gonzalez de Mejia E, Sivaguru M, Amaya-Llano SL. Common bean ( Phaseolus vulgaris L.) protein-derived peptides increased insulin secretion, inhibited lipid accumulation, increased glucose uptake and reduced the phosphatase and tensin homologue activation in vitro. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.09.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Dietary whey proteins shield murine cecal microbiota from extensive disarray caused by a high-fat diet. Food Res Int 2016; 85:121-130. [DOI: 10.1016/j.foodres.2016.04.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 04/22/2016] [Accepted: 04/25/2016] [Indexed: 01/22/2023]
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Palabiyik O, Karaca A, Taştekin E, Yamasan BE, Tokuç B, Sipahi T, Vardar SA. The Effect of a High-Protein Diet and Exercise on Cardiac AQP7 and GLUT4 Gene Expression. Biochem Genet 2016; 54:731-45. [PMID: 27294385 DOI: 10.1007/s10528-016-9753-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 06/08/2016] [Indexed: 12/18/2022]
Abstract
High-protein (HP) diets are commonly consumed by athletes despite their potential health hazard, which is postulated to enforce a negative effect on bone and renal health. However, its effects on heart have not been known yet. Aquaporin-7 (AQP7) is an aquaglyceroporin that facilitates glycerol and water transport. Glycerol is an important cardiac energy production substrate, especially during exercise, in conjunction with fatty acids and glucose. Glucose transporter 4 (GLUT4) is an insulin-sensitive glucose transporter in heart. We aimed to investigate the effect of HPD on AQP7 and GLUT4 levels in the rat heart subjected to exercise. Male Sprague-Dawley rats were divided into control (n = 12), exercise (E) training (n = 10), HPD (n = 12), and HPD-E training (n = 9) groups. The HPD groups were fed a 45 % protein-containing diet 5 weeks. The HPD-E and E groups were performed the treadmill exercise during the 5-week study period. Real-time polymerase chain reaction and immunohistochemistry techniques were used to determine the gene expression and localization of AQP7 and GLUT4 in heart tissue. Results of relative gene expression were calculated by the 'Pfaffl' mathematical method using the REST program. Differences in AQP7 and GLUT4 gene expression were expressed as fold change compared to the control group. Heart weight/tibia ratio and ventricular wall thickness were evaluated as markers of cardiac hypertrophy. Further, serum glucose, glycerol, and insulin levels were also measured. AQP7 gene expression was found to be increased in the E (3.47-fold, p < 0.001), HPD (5.59-fold, p < 0.001), and HPD-E (3.87-fold, p < 0.001) groups compared to the control group. AQP7 protein expression was also increased in the HPD and HPD-E groups (p < 0.001). Additionally, cardiac mRNA expression levels of GLUT4 showed a significant increase in the E (2.16-fold, p < 0.003), HPD (7.14-fold, p < 0.001), and HPD-E (3.43-fold, p < 0.001) groups compared to the control group. GLUT4 protein expression was significantly increased in the E, HPD, and HPD-E groups compared to the control group (p = 0.024, p < 0.001, and p < 0.001, respectively). Furthermore, Serum glucose levels were significantly different between groups (p < 0.005). This difference was observed between the HPD groups and normal-protein diet groups (C and E). Serum insulin levels were higher for HPD groups compared with the normal-protein diet groups (p < 0.001), whereas no differences were observed between the exercise and sedentary groups (p = 0.111). Serum glycerol levels were significantly increased in the HPD groups compared with control and E groups (p < 0.05 and p < 0.05, respectively). Consumption of HPD supplementation caused the increased effects on AQP7 and GLUT4 expression in rat heart.
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Affiliation(s)
- Orkide Palabiyik
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey.
| | - Aziz Karaca
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Bilge Eren Yamasan
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Burcu Tokuç
- Department of Public Health, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Selma Arzu Vardar
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
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Pezeshki A, Fahim A, Chelikani PK. Dietary Whey and Casein Differentially Affect Energy Balance, Gut Hormones, Glucose Metabolism, and Taste Preference in Diet-Induced Obese Rats. J Nutr 2015; 145:2236-44. [PMID: 26311811 DOI: 10.3945/jn.115.213843] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 07/30/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Dietary whey and casein proteins decrease food intake and body weight and improve glycemic control; however, little is known about the underlying mechanisms. OBJECTIVE We determined the effects of dietary whey, casein, and a combination of the 2 on energy balance, hormones, glucose metabolism, and taste preference in rats. METHODS In Expt. 1, Obesity Prone CD (OP-CD) rats were fed a high-fat control diet (33% fat energy) for 8 wk, and then randomly assigned to 4 isocaloric dietary treatments (n = 12/group): the control treatment (CO; 14% protein energy from egg white), the whey treatment (WH; 26% whey + 14% egg white), the casein treatment (CA; 26% casein + 14% egg white), or the whey plus casein treatment (WHCA; 13% whey + 13% casein + 14% egg white) for 28 d. Measurements included food intake, energy expenditure, body composition, metabolic hormones, glucose tolerance and key tissue markers of glucose and energy metabolism. In Expt. 2, naïve OP-CD rats were randomly assigned to 3 groups (n = 8/group). During an 8 d conditioning period, each group received on alternate days either the CO or WH, CO or CA, or CO or WHCA. Subsequently, preferences for the test diets were assessed on 2 consecutive days with food intake measurements at regular intervals. RESULTS In Expt. 1, food intake was decreased by 17-37% for the first 14 d in the WH and CA rats, and by 18-34% only for the first 4 d in the WHCA compared with the CO rats. Fat mass decreased by 21-28% for the WH rats and 17-33% for the CA rats from day 14 onward, but by 30% only on day 28 in WHCA rats, relative to CO rats. Thus, food intake, body weight, and fat mass decreased more rapidly in WH and CA rats than in WHCA rats. Energy expenditure in WH rats decreased for the first 4 d compared with CA and WHCA rats, and for the first 7 d compared with the CO rats. Circulating leptin, glucose-dependent insulinotropic polypeptide, interleukin 6, and glucose concentrations were lower in WH, CA, and WHCA rats than in CO rats. Plasma glucagon-like peptide 1 concentrations were greater in WH than in CA or WHCA rats. The improvements in glucose tolerance were greater in WH than in WHCA rats. The plasma membrane glucose transporter 4 (GLUT4)-to-total GLUT4 ratio in skeletal muscle was greater in CA and WHCA rats than in CO rats; other markers of glucose and energy metabolism in the adipose and cardiac tissues did not differ. In Expt. 2, during 4 conditioning trials, daily food intake was decreased in WH, CA, and WHCA rats by 26-37%, 30-43%, and 23-33%, respectively, compared with CO rats. Preferences for WH and CA rats were 45% and 31% lower, respectively, than those for CO rats, but that for WHCA rats did not differ. CONCLUSION Together, these data demonstrate that in obese rats, whey, casein, and their combination improve energy balance through differential effects on food intake, taste preference, energy expenditure, glucose tolerance, and gut hormone secretion.
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Affiliation(s)
- Adel Pezeshki
- Department of Production Animal Health, Faculty of Veterinary Medicine, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada
| | - Andrew Fahim
- Department of Production Animal Health, Faculty of Veterinary Medicine, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada
| | - Prasanth K Chelikani
- Department of Production Animal Health, Faculty of Veterinary Medicine, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Canada
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Ormsbee MJ, Bach CW, Baur DA. Pre-exercise nutrition: the role of macronutrients, modified starches and supplements on metabolism and endurance performance. Nutrients 2014; 6:1782-808. [PMID: 24787031 PMCID: PMC4042570 DOI: 10.3390/nu6051782] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/03/2014] [Accepted: 04/14/2014] [Indexed: 01/16/2023] Open
Abstract
Endurance athletes rarely compete in the fasted state, as this may compromise fuel stores. Thus, the timing and composition of the pre-exercise meal is a significant consideration for optimizing metabolism and subsequent endurance performance. Carbohydrate feedings prior to endurance exercise are common and have generally been shown to enhance performance, despite increasing insulin levels and reducing fat oxidation. These metabolic effects may be attenuated by consuming low glycemic index carbohydrates and/or modified starches before exercise. High fat meals seem to have beneficial metabolic effects (e.g., increasing fat oxidation and possibly sparing muscle glycogen). However, these effects do not necessarily translate into enhanced performance. Relatively little research has examined the effects of a pre-exercise high protein meal on subsequent performance, but there is some evidence to suggest enhanced pre-exercise glycogen synthesis and benefits to metabolism during exercise. Finally, various supplements (i.e., caffeine and beetroot juice) also warrant possible inclusion into pre-race nutrition for endurance athletes. Ultimately, further research is needed to optimize pre-exercise nutritional strategies for endurance performance.
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Affiliation(s)
- Michael J Ormsbee
- Human Performance and Sports Nutrition Lab, Department of Nutrition, Food, and Exercise Sciences, Florida State University, Tallahassee, FL 32306, USA.
| | - Christopher W Bach
- Human Performance and Sports Nutrition Lab, Department of Nutrition, Food, and Exercise Sciences, Florida State University, Tallahassee, FL 32306, USA.
| | - Daniel A Baur
- Human Performance and Sports Nutrition Lab, Department of Nutrition, Food, and Exercise Sciences, Florida State University, Tallahassee, FL 32306, USA.
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Tong X, Li W, Xu JY, Han S, Qin LQ. Effects of whey protein and leucine supplementation on insulin resistance in non-obese insulin-resistant model rats. Nutrition 2014; 30:1076-80. [PMID: 24976432 DOI: 10.1016/j.nut.2014.01.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 01/16/2014] [Accepted: 01/17/2014] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Whey protein (WP) has been reported to reduce body weight gain and improve glucose metabolism in obese individuals. This study aims to assess and compare the effects of WP and its hydrolysate-leucine (Leu) supplementation in non-obese, insulin-resistant (IR) rat models, particularly the effects on insulin sensitivity, lipid profile, and antioxidant activity. METHODS Wistar rats were fed a diet consisting of 38.5% fat for 12 wk and 51.3% fat for an additional 4 wk to establish non-obese IR rats. The IR rats were then switched to regular AIN-93 diet containing 0% WP, 5% WP, 15% WP or 1.6% Leu for 8 wk. The Leu content was the same in the 15% WP and 1.6% Leu groups based on high-performance liquid chromatography. The IR rats' body weight, fasting blood glucose, fasting insulin, and homeostasis model assessment-insulin resistance were measured before and after supplementation. An oral glucose tolerance test was performed after supplementation. Body composition, plasma concentrations of the lipids profile, and antioxidant index also were analyzed. RESULTS No significant difference was observed in body weight, energy intake, and fasting blood glucose in the non-obese IR rats at the end of the experiment. Compared with the 0% WP group, the fasting insulin and homeostasis model assessment-insulin resistance significantly decreased in the 15% WP and 1.6% Leu groups. Furthermore, the blood glucose area under the curve of the oral glucose tolerance test was significantly less in the 15% WP and 1.6% Leu groups. There were no differences in the lipids profile, except for the increase in the high-density lipoprotein cholesterol in the 15% WP and 1.6% Leu groups. For the antioxidant index, the 15% WP group had significantly increased plasma levels for total antioxidation capacity, superoxide dismutase, and glutathione, and a decreased malondialdehyde concentration. The 1.6% Leu group was shown to have the same effect as the 15% WP group, except for the glutathione. CONCLUSION Our findings demonstrate that the supplementation of WP and Leu may improve IR and antioxidant stress without resulting in changes in body weight and energy intake in non-obese IR rats.
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Affiliation(s)
- Xing Tong
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China; Laboratory Center, Medical College of Soochow University, Suzhou, China
| | - Wei Li
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China; Department of Nutrition, Shanghai 10th People's Hospital, Shanghai, China
| | - Jia-Ying Xu
- Key Laboratory of Radiation Biology, School of Radiation Medicine and Protection, Soochow University, Suzhou, China
| | - Shufen Han
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China
| | - Li-Qiang Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China.
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