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Li Y, Xu Y, Hu X, Li C, Wei L, Wang X, Jin Y, Hu Z. Water-Soluble Se-Containing Proteins from Chicken Alleviate DSS-Induced Ulcerative Colitis in Mice via Inhibiting TLR4/MyD88 Pathway and Protecting the Goblet Cell Pathway. Biol Trace Elem Res 2024; 202:3767-3780. [PMID: 37950138 DOI: 10.1007/s12011-023-03952-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
The influence of water-soluble selenium-containing proteins (WSSeP) in chicken on ulcerative colitis (UC) is not known. This work aims to investigate the effect of two WSSeP including h-Se with 1.78 μg Se/g and l-Se with 1.04 μg Se/g on mice UC induced by dextran sodium sulfate (DSS) versus 5-aminosalicylic acid (5-ASA). Seventy C57BL/6 mice were randomly divided into seven groups: groups 1 and 7 were given normal saline. Group 2 to group 4 were administrated orally 500, 1500, and 3000 mg/kg/day h-Se, respectively. Group 5 was given 1500 mg/kg/day l-Se as the control of group 3. From day 14 to day 21, groups 2 to 7 were fed with 3% DSS. Synchronously, group 6 was fed with 150 mg/kg/day 5-ASA. On day 21, the disease activity index, colon length, the histopathological changes, the expressions of claudin-1, occludin, ZO-1, TLR4, and MyD88 in colons, the levels of inflammatory cytokines (IFN-γ, IL-1β, IL-6, TNF-α), and antioxidant markers (LPS, GSH-Px, SOD, MDA) in serum were determined. WSSeP can effectively improve the damages of DSS to the colon, thymus, and spleen, which present protein and Se dose-dependent. 1.50 g h-Se dose can significantly promote the expression levels of claudin-1, occludin, and ZO-1, to surround crypt gland and goblet and epithelial cells and inhibit the attack of DSS, suppress TLR4/MyD88 pathway, decrease the levels of IL-1β, IL-6, TNF-α, IFN-γ, LPS, and MDA, and increase the activities of GSH-Px and SOD, which are better than those of 5-ASA. Therefore, WSSeP would be a natural and potential anti-inflammatory agent for UC.
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Affiliation(s)
- Yuancheng Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Yanlong Xu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Xin Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Chenxi Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Lulu Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Xinlei Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Yi Jin
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Zhongqiu Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China.
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Li C, Bassey AP, Zhou G. Molecular Changes of Meat Proteins During Processing and Their Impact on Quality and Nutritional Values. Annu Rev Food Sci Technol 2023; 14:85-111. [PMID: 36972162 DOI: 10.1146/annurev-food-052720-124932] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Meats are rich in lipids and proteins, exposing them to rapid oxidative changes. Proteins are essential to the human diet, and changes in the structure and functional attributes can greatly influence the quality and nutritional value of meats. In this article, we review the molecular changes of proteins during processing, their impact on the nutritional value of fresh and processed meat, the digestibility and bioavailability of meat proteins, the risks associated with high meat intake, and the preventive strategies employed to mitigate these risks. This information provides new research directions to reduce or prevent oxidative processes that influence the quality and nutritional values of meat.
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Affiliation(s)
- Chunbao Li
- Key Laboratory of Meat Processing and Quality Control, Ministry of Education; Key Laboratory of Meat Processing, Ministry of Agriculture and Rural Affairs; Jiangsu Collaborative Center of Meat Production, Processing and Quality Control; College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, PR China;
| | - Anthony Pius Bassey
- Key Laboratory of Meat Processing and Quality Control, Ministry of Education; Key Laboratory of Meat Processing, Ministry of Agriculture and Rural Affairs; Jiangsu Collaborative Center of Meat Production, Processing and Quality Control; College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, PR China;
| | - Guanghong Zhou
- Key Laboratory of Meat Processing and Quality Control, Ministry of Education; Key Laboratory of Meat Processing, Ministry of Agriculture and Rural Affairs; Jiangsu Collaborative Center of Meat Production, Processing and Quality Control; College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, PR China;
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Sánchez-Chino XM, Jiménez Martínez C, León-Espinosa EB, Garduño-Siciliano L, Álvarez-González I, Madrigal-Bujaidar E, Vásquez-Garzón VR, Baltiérrez-Hoyos R, Dávila-Ortiz G. Protective Effect of Chickpea Protein Hydrolysates on Colon Carcinogenesis Associated With a Hypercaloric Diet. J Am Coll Nutr 2018; 38:162-170. [PMID: 30211662 DOI: 10.1080/07315724.2018.1487809] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Colon cancer occupies the third place in incidence worldwide; eating habits, in particular, consumption of hypercaloric diets, are relevant in its etiopathogenesis. On the other hand, foods can also modulate carcinogenesis: for example, proteins, which when hydrolyzed release peptides with biological activities, and legumes, especially, chickpea, represent a good source of hydrolysates. The objective of this work was to verify the inhibitory effect of chickpea hydrolyzed protein on azoxymethane (AOM)-induced carcinogenesis in mice fed a hypercaloric diet. METHODS We hydrolyzed chickpea protein by pepsin, pancreatin, and a combined pepsin-pancreatin system, to test its anticarcinogenic and hypercaloric activity in mice that had consumed a hypercaloric diet or a normal diet but were injected with azoxymethane (AOM). RESULTS A concentrate (70% proteins) was obtained from chickpea seeds (18.5% proteins), and extensive hydrolysates were obtained at 15 minutes, in all tested enzyme systems. The greatest activity was evidenced in the hydrolysates obtained with pepsin-pancreatin at 90 minutes. Animals that consumed the hypercaloric diet had a higher concentration of cholesterol and a higher atherogenic index, which were significantly reduced with the administration of chickpea protein hydrolysates with a dose-response effect (10, 20, or 30 mg/kg), whereas no effect was observed in animals that consumed the normal diet. In animals given AOM, aberrant crypts were observed, at a higher rate in animals that consumed the hypercaloric diet; with the consumption of hydrolysates by the animals that consumed either diet, the number of aberrant crypts was reduced with the 3 doses tested, and the effect was better in those animals fed the hypercaloric diet. The best effect in all tests was with 30 mg/kg body weight. CONCLUSION The consumption of chickpea protein hydrolysates might confer a protective effect against colon carcinogenesis.
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Affiliation(s)
- Xariss M Sánchez-Chino
- a Escuela Nacional de Ciencias Biológicas , Instituto Politécnico Nacional , Mexico City , Mexico.,b Cátedra-CONACyT, Departamento de Salud , El Colegio de la Frontera Sur-Villahermosa , Campeche , Mexico
| | | | - Erika B León-Espinosa
- a Escuela Nacional de Ciencias Biológicas , Instituto Politécnico Nacional , Mexico City , Mexico
| | | | - Isela Álvarez-González
- a Escuela Nacional de Ciencias Biológicas , Instituto Politécnico Nacional , Mexico City , Mexico
| | | | - Verónica R Vásquez-Garzón
- c Cátedra-CONACYT, Facultad de Medicina y Cirugía , Universidad Autónoma Benito Juárez de Oaxaca , Oaxaca de Juárez , Mexico
| | - Rafael Baltiérrez-Hoyos
- c Cátedra-CONACYT, Facultad de Medicina y Cirugía , Universidad Autónoma Benito Juárez de Oaxaca , Oaxaca de Juárez , Mexico
| | - Gloria Dávila-Ortiz
- a Escuela Nacional de Ciencias Biológicas , Instituto Politécnico Nacional , Mexico City , Mexico
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Bjørndal B, Alterås EK, Lindquist C, Svardal A, Skorve J, Berge RK. Associations between fatty acid oxidation, hepatic mitochondrial function, and plasma acylcarnitine levels in mice. Nutr Metab (Lond) 2018; 15:10. [PMID: 29422939 PMCID: PMC5789604 DOI: 10.1186/s12986-018-0241-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 01/10/2018] [Indexed: 02/07/2023] Open
Abstract
Background The 4-thia fatty acid tetradecylthiopropionic acid (TTP) is known to inhibit mitochondrial β-oxidation, and can be used as chemically induced hepatic steatosis-model in rodents, while 3-thia fatty acid tetradecylthioacetic acid (TTA) stimulates fatty acid oxidation through activation of peroxisome proliferator activated receptor alpha (PPARα). We wished to determine how these two compounds affected in vivo respiration and mitochondrial efficiency, with an additional goal to elucidate whether mitochondrial function is reflected in plasma acylcarnitine levels. Methods C57BL/6 mice were divided in 4 groups of 10 mice and fed a control low-fat diet, low-fat diets with 0.4% (w/w) TTP, 0.4% TTA or a combination of these two fatty acids for three weeks (n = 10). At sacrifice, β-oxidation and oxidative phosphorylation (OXPHOS) capacity was analysed in fresh liver samples. Hepatic mitochondria were studied using transmission electron microscopy. Lipid classes were measured in plasma, heart and liver, acylcarnitines were measured in plasma, and gene expression was measured in liver. Results The TTP diet resulted in hepatic lipid accumulation, plasma L-carnitine and acetylcarnitine depletion and elevated palmitoylcarnitine and non-esterified fatty acid levels. No significant lipid accumulation was observed in heart. The TTA supplement resulted in enhanced hepatic β-oxidation, accompanied by an increased level of acetylcarnitine and palmitoylcarnitine in plasma. Analysis of mitochondrial respiration showed that TTP reduced oxidative phosphorylation, while TTA increased the maximum respiratory capacity of the electron transport system. Combined treatment with TTP and TTA resulted in a profound stimulation of genes involved in the PPAR-response and L-carnitine metabolism, and partly prevented triacylglycerol accumulation in the liver concomitant with increased peroxisomal β-oxidation and depletion of plasma acetylcarnitines. Despite an increased number of mitochondria in the liver of TTA + TTP fed mice, the OXPHOS capacity was significantly reduced. Conclusion This study indicates that fatty acid β-oxidation directly affects mitochondrial respiratory capacity in liver. As plasma acylcarnitines reflected the reduced mitochondrial β-oxidation in TTP-fed mice, they could be useful tools to monitor mitochondrial function. As mitochondrial dysfunction is a major determinant of metabolic disease, this supports their use as plasma markers of cardiovascular risk in humans. Results however indicate that high PPAR activation obscures the interpretation of plasma acylcarnitine levels. Electronic supplementary material The online version of this article (10.1186/s12986-018-0241-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bodil Bjørndal
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway
| | - Eva Katrine Alterås
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway
| | - Carine Lindquist
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway.,2Department of Heart Disease, Haukeland University Hospital, N-5021 Bergen, Norway
| | - Asbjørn Svardal
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway
| | - Jon Skorve
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway
| | - Rolf K Berge
- 1Department of Clinical Science, University of Bergen, N-5020 Bergen, Norway.,2Department of Heart Disease, Haukeland University Hospital, N-5021 Bergen, Norway
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Yao S, Agyei D, Udenigwe CC. Structural Basis of Bioactivity of Food Peptides in Promoting Metabolic Health. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 84:145-181. [PMID: 29555068 DOI: 10.1016/bs.afnr.2017.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bioactive peptides have many structural features that enable them to become functional in controlling several biological processes in the body, especially those related to metabolic health. This chapter provides an overview of the multiple targets of food-derived peptides against metabolic health problems (e.g., hypertension, dyslipidemia, hyperglycemia, oxidative stress) and discusses the importance of structural chemistry in determining the bioactivities of peptides and protein hydrolysates.
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Affiliation(s)
- Shixiang Yao
- Southwest University, Chongqing, PR China; University of Ottawa, Ottawa, ON, Canada
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Berge RK, Bjørndal B, Strand E, Bohov P, Lindquist C, Nordrehaug JE, Svardal A, Skorve J, Nygård O. Tetradecylthiopropionic acid induces hepatic mitochondrial dysfunction and steatosis, accompanied by increased plasma homocysteine in mice. Lipids Health Dis 2016; 15:24. [PMID: 26846427 PMCID: PMC4743328 DOI: 10.1186/s12944-016-0192-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/27/2016] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Hepatic mitochondrial dysfunction plays an important role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). Methyl donor supplementation has been shown to alleviate NAFLD, connecting the condition to the one-carbon metabolism. Thus, the objective was to investigate regulation of homocysteine (Hcy) and metabolites along the choline oxidation pathway during induction of hepatic steatosis by the fatty acid analogue tetradecylthiopropionic acid (TTP), an inhibitor of mitochondrial fatty acid oxidation. METHODS Mice were fed a control diet, or diets containing 0.3 %, 0.6 %, or 0.9 % (w/w) TTP for 14 days. Blood and liver samples were collected, enzyme activities and gene expression were analyzed in liver, lipid and fatty acid composition in liver and plasma, one-carbon metabolites, B-vitamin status, carnitine and acylcarnitines were analyzed in plasma. RESULTS Liver mitochondrial fatty acid oxidation decreased by 40 % and steatosis was induced in a dose dependent manner; total lipids increased 1.6-fold in animals treated with 0.3 % TTP, 2-fold with 0.6 % TTP and 2.1 fold with 0.9 % TTP compared to control. The higher hepatic concentration of fatty acids was associated with shortening of carbon-length. Furthermore, the inhibited fatty acid oxidation led to a 30-fold decrease in plasma carnitine and 9.3-fold decrease in acetylcarnitine at the highest dose of TTP, whereas an accumulation of palmitoylcarnitine resulted. Compared to the control diet, TTP administration was associated with elevated plasma total Hcy (control: 7.2 ± 0.3 umol/L, 0.9 % TTP: 30.5 ± 5.9 umol/L) and 1.4-1.6 fold increase in the one-carbon metabolites betaine, dimethylglycine, sarcosine and glycine, accompanied by changes in gene expression of the different B-vitamin dependent pathways of Hcy and choline metabolism. A positive correlation between total Hcy and hepatic triacylglycerol resulted. CONCLUSIONS The TTP-induced inhibition of mitochondrial fatty acid oxidation was not associated with increased hepatic oxidative stress or inflammation. Our data suggest a link between mitochondrial dysfunction and the methylation processes within the one-carbon metabolism in mice.
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Affiliation(s)
- Rolf K Berge
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway. .,Department of Heart Disease, Haukeland University Hospital, 5021, Bergen, Norway.
| | - Bodil Bjørndal
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Elin Strand
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Pavol Bohov
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Carine Lindquist
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Jan Erik Nordrehaug
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway. .,Department of Heart Disease, Stavanger University Hospital, 4142, Stavanger, Norway.
| | - Asbjørn Svardal
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Jon Skorve
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway.
| | - Ottar Nygård
- Department of Clinical Science, University of Bergen, 5020, Bergen, Norway. .,Department of Heart Disease, Haukeland University Hospital, 5021, Bergen, Norway. .,KG Jebsen Centre for Diabetes Research, University of Bergen, 5020, Bergen, Norway.
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A Phospholipid-Protein Complex from Krill with Antioxidative and Immunomodulating Properties Reduced Plasma Triacylglycerol and Hepatic Lipogenesis in Rats. Mar Drugs 2015; 13:4375-97. [PMID: 26193284 PMCID: PMC4515623 DOI: 10.3390/md13074375] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 06/24/2015] [Accepted: 07/01/2015] [Indexed: 12/17/2022] Open
Abstract
Dietary intake of marine omega-3 polyunsaturated fatty acids (n-3 PUFAs) can change the plasma profile from atherogenic to cardioprotective. In addition, there is growing evidence that proteins of marine origin may have health benefits. We investigated a phospholipid-protein complex (PPC) from krill that is hypothesized to influence lipid metabolism, inflammation, and redox status. Male Wistar rats were fed a control diet (2% soy oil, 8% lard, 20% casein), or diets where corresponding amounts of casein and lard were replaced with PPC at 3%, 6%, or 11% (wt %), for four weeks. Dietary supplementation with PPC resulted in significantly lower levels of plasma triacylglycerols in the 11% PPC-fed group, probably due to reduced hepatic lipogenesis. Plasma cholesterol levels were also reduced at the highest dose of PPC. In addition, the plasma and liver content of n-3 PUFAs increased while n-6 PUFAs decreased. This was associated with increased total antioxidant capacity in plasma and increased liver gene expression of mitochondrial superoxide dismutase (Sod2). Finally, a reduced plasma level of the inflammatory mediator interleukin-2 (IL-2) was detected in the PPC-fed animals. The present data show that PPC has lipid-lowering effects in rats, and may modulate risk factors related to cardiovascular disease progression.
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Lysne V, Bjørndal B, Vik R, Nordrehaug JE, Skorve J, Nygård O, Berge RK. A Protein Extract from Chicken Reduces Plasma Homocysteine in Rats. Nutrients 2015; 7:4498-511. [PMID: 26053618 PMCID: PMC4488798 DOI: 10.3390/nu7064498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/27/2015] [Accepted: 05/29/2015] [Indexed: 11/16/2022] Open
Abstract
The present study aimed to evaluate effects of a water-soluble protein fraction of chicken (CP), with a low methionine/glycine ratio, on plasma homocysteine and metabolites related to homocysteine metabolism. Male Wistar rats were fed either a control diet with 20% w/w casein as the protein source, or an experimental diet where 6, 14 or 20% w/w of the casein was replaced with the same amount of CP for four weeks. Rats fed CP had reduced plasma total homocysteine level and markedly increased levels of the choline pathway metabolites betaine, dimethylglycine, sarcosine, glycine and serine, as well as the transsulfuration pathway metabolites cystathionine and cysteine. Hepatic mRNA level of enzymes involved in homocysteine remethylation, methionine synthase and betaine-homocysteine S-methyltransferase, were unchanged, whereas cystathionine gamma-lyase of the transsulfuration pathway was increased in the CP treated rats. Plasma concentrations of vitamin B2, folate, cobalamin, and the B-6 catabolite pyridoxic acid were increased in the 20% CP-treated rats. In conclusion, the CP diet was associated with lower plasma homocysteine concentration and higher levels of serine, choline oxidation and transsulfuration metabolites compared to a casein diet. The status of related B-vitamins was also affected by CP.
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Affiliation(s)
- Vegard Lysne
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
| | - Bodil Bjørndal
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Rita Vik
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | | | - Jon Skorve
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Ottar Nygård
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
- KG Jebsen Centre for Diabetes Research, University of Bergen, 5020 Bergen, Norway.
| | - Rolf K Berge
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
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The Role of Food Peptides in Lipid Metabolism during Dyslipidemia and Associated Health Conditions. Int J Mol Sci 2015; 16:9303-13. [PMID: 25918936 PMCID: PMC4463589 DOI: 10.3390/ijms16059303] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/10/2015] [Accepted: 04/20/2015] [Indexed: 01/17/2023] Open
Abstract
Animal and human clinical studies have demonstrated the ability of dietary food proteins to modulate endogenous lipid levels during abnormal lipid metabolism (dyslipidemia). Considering the susceptibility of proteins to gastric proteolytic activities, the hypolipidemic functions of proteins are possibly due, in part, to their peptide fragments. Food-derived peptides may directly modulate abnormal lipid metabolism in cell cultures and animal models of dyslipidemia. The peptides are thought to act by perturbing intestinal absorption of dietary cholesterol and enterohepatic bile acid circulation, and by inhibiting lipogenic enzymatic activities and gene expression in hepatocytes and adipocytes. Recent evidence indicates that the hypolipidemic activities of some peptides are due to activation of hepatic lipogenic transcription factors. However, detailed molecular mechanisms and structural requirements of peptides for these activities are yet to be elucidated. As hypolipidemic peptides can be released during enzymatic food processing, future studies can explore the prospects of combating metabolic syndrome and associated complications using peptide-rich functional food and nutraceutical products.
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