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Bouchard J, Raj P, Yu L, Sobhi B, Malalgoda M, Malunga L, Netticadan T, Joseph Thandapilly S. Oat protein modulates cholesterol metabolism and improves cardiac systolic function in high fat, high sucrose fed rats. Appl Physiol Nutr Metab 2024; 49:738-750. [PMID: 38477294 DOI: 10.1139/apnm-2023-0440] [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] [Indexed: 03/14/2024]
Abstract
Oats are recognized to provide many health benefits that are mainly associated with its dietary fibre, β-glucan. However, the protein derived from oats is largely understudied with respect to its ability to maintain health and attenuate risk factors of chronic diseases. The goal of the current study was to investigate the metabolic effects of oat protein consumption in lieu of casein as the protein source in high fat, high sucrose (HF/HS) fed Wistar rats. Four-week-old rats were divided into three groups and were fed three different experimental diets: a control diet with casein as the protein source, an HF/HS diet with casein, or an HF/HS diet with oat protein for 16 weeks. Heart structure and function were determined by echocardiography. Blood pressure measurements, an oral glucose tolerance test, and markers of cholesterol metabolism, oxidative stress, inflammation, and liver and kidney damage were also performed. Our study results show that incorporation of oat protein in the diet was effective in preserving systolic heart function in HF/HS fed rats. Oat protein significantly reduced serum total and low-density lipoprotein cholesterol levels. Furthermore, oat protein normalized liver HMG-CoAR activity, which, to our knowledge, is the first time this has been reported in the literature. Therefore, our research suggests that oat protein can provide hypocholesterolemic and cardioprotective benefits in a diet-induced model of metabolic syndrome.
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Affiliation(s)
- Jenny Bouchard
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R3T 2N2, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Pema Raj
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
| | - Liping Yu
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
| | - Babak Sobhi
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R3T 2N2, Canada
| | - Maneka Malalgoda
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Lovemore Malunga
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R3T 2N2, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Thomas Netticadan
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Sijo Joseph Thandapilly
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, Winnipeg, MB R2H 2A6, Canada
- Richardson Center for Food Technology and Research, Winnipeg, MB R3T 2N2, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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Li D, Chen M, Meng X, Sun Y, Liu R, Sun T. Extraction, purification, structural characteristics, bioactivity and potential applications of polysaccharides from Avena sativa L.: A review. Int J Biol Macromol 2024; 265:130891. [PMID: 38493821 DOI: 10.1016/j.ijbiomac.2024.130891] [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: 09/06/2023] [Revised: 01/03/2024] [Accepted: 03/12/2024] [Indexed: 03/19/2024]
Abstract
Avena sativa L. (A. sativa L.), commonly known as oat, is a significant cereal grain crop with excellent edible and medicinal value. Oat polysaccharides (OPs), the major bioactive components of A. sativa L., have received considerable attention due to their beneficial bioactivities. However, the isolation and purification methods of OPs lack innovation, and the structure-activity relationship remains unexplored. This review emphatically summarized recent progress in the extraction and purification methods, structural characteristics, biological activities, structure-to-function associations and the potential application status of OPs. Different materials and isolation methods can result in the differences in the structure and bioactivity of OPs. OPs are mainly composed of various monosaccharide constituents, including glucose, arabinose and mannose, along with galactose, xylose and rhamnose in different molar ratios and types of glycosidic bonds. OPs exhibited a broad molecular weight distribution, ranging from 1.34 × 105 Da to 4.1 × 106 Da. Moreover, structure-activity relationships demonstrated that the monosaccharide composition, molecular weight, linkage types, and chemical modifications are closely related to their multiple bioactivities, including immunomodulatory activity, antioxidant effect, anti-inflammatory activity, antitumor effects etc. This work can provide comprehensive knowledge, update information and promising directions for future exploitation and application of OPs as therapeutic agents and multifunctional food additives.
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Affiliation(s)
- Dan Li
- Center of Pharmaceutical Engineering and Technology; Harbin University of Commerce, Harbin 150076, China
| | - Mengjie Chen
- Center of Pharmaceutical Engineering and Technology; Harbin University of Commerce, Harbin 150076, China
| | - Xianwei Meng
- Center of Pharmaceutical Engineering and Technology; Harbin University of Commerce, Harbin 150076, China
| | - Yuan Sun
- Center of Pharmaceutical Engineering and Technology; Harbin University of Commerce, Harbin 150076, China.
| | - Rui Liu
- Center of Pharmaceutical Engineering and Technology; Harbin University of Commerce, Harbin 150076, China.
| | - Tiedong Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China.
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3
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Li L, Zhang R, Hu Y, Deng H, Pei X, Liu F, Chen C. Impact of Oat ( Avena sativa L.) on Metabolic Syndrome and Potential Physiological Mechanisms of Action: A Current Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14838-14852. [PMID: 37797345 DOI: 10.1021/acs.jafc.3c02304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Oat (Avena sativa L.), an annual herbaceous plant belonging to the Gramineae family, is widely grown in various regions including EU, Canada, America, Australia, etc. Due to the nutritional and pharmacological values, oats have been developed into various functional food including fermented beverage, noodle, cookie, etc. Meanwhile, numerous studies have demonstrated that oats may effectively improve metabolic syndrome, such as dyslipidemia, hyperglycemia, atherosclerosis, hypertension, and obesity. However, the systematic pharmacological mechanisms of oats on metabolic syndrome have not been fully revealed. Therefore, in order to fully explore the benefits of oat in food industry and clinic, this review aims to provide up-to-date information on oat and its constituents, focusing on the effects on metabolic syndrome.
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Affiliation(s)
- Lin Li
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Ruiyuan Zhang
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Yichen Hu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industralization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan People's Republic of China
| | - Hongdan Deng
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Xu Pei
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Fang Liu
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Chen Chen
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia 4072, Brisbane, Australia
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Li L, Zhang R, Hu Y, Deng H, Pei X, Liu F, Chen C. Impact of Oat ( Avena sativa L.) on Metabolic Syndrome and Potential Physiological Mechanisms of Action: A Current Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14838-14852. [DOI: https:/doi.org/10.1021/acs.jafc.3c02304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/14/2024]
Affiliation(s)
- Lin Li
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People’s Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People’s Republic of China
| | - Ruiyuan Zhang
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People’s Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People’s Republic of China
| | - Yichen Hu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industralization, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan People’s Republic of China
| | - Hongdan Deng
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People’s Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People’s Republic of China
| | - Xu Pei
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People’s Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People’s Republic of China
| | - Fang Liu
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People’s Republic of China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People’s Republic of China
| | - Chen Chen
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia 4072, Brisbane, Australia
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Fabiano GA, Shinn LM, Antunes AEC. Relationship between Oat Consumption, Gut Microbiota Modulation, and Short-Chain Fatty Acid Synthesis: An Integrative Review. Nutrients 2023; 15:3534. [PMID: 37630725 PMCID: PMC10459712 DOI: 10.3390/nu15163534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
The gut microbiota consists of a set of microorganisms that colonizes the intestine and ferment fibers, among other nutrients, from the host's diet. A healthy gut microbiota, colonized mainly by beneficial microorganisms, has a positive effect on digestion and plays a role in disease prevention. However, dysregulation of the gut microbiota can contribute to various diseases. The nutrition of the host plays an important role in determining the composition of the gut microbiota. A healthy diet, rich in fiber, can beneficially modulate the gut microbiota. In this sense, oats are a source of both soluble and insoluble fiber. Oats are considered a functional ingredient with prebiotic potential and contain plant proteins, unsaturated fats, and antioxidant compounds. The impact of oat consumption on the gut microbiota is still emerging. Associations between oat consumption and the abundance of Akkermansia muciniphila, Roseburia, Lactobacillus, Bifidobacterium, and Faecalibacterium prausnitzii have already been observed. Therefore, this integrative review summarizes the findings from studies on the relationship between oat consumption, the gut microbiota, and the metabolites, mainly short-chain fatty acids, it produces.
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Affiliation(s)
- Giovanna Alexandre Fabiano
- School of Applied Sciences (FCA), State University of Campinas, 1300 Pedro Zaccaria St., Limeira 13484-350, SP, Brazil;
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Dong L, Qin C, Li Y, Wu Z, Liu L. Oat phenolic compounds regulate metabolic syndrome in high fat diet-fed mice via gut microbiota. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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7
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Rafique H, Dong R, Wang X, Alim A, Aadil RM, Li L, Zou L, Hu X. Dietary-Nutraceutical Properties of Oat Protein and Peptides. Front Nutr 2022; 9:950400. [PMID: 35866075 PMCID: PMC9294724 DOI: 10.3389/fnut.2022.950400] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 06/03/2022] [Indexed: 11/13/2022] Open
Abstract
Oats are considered the healthiest grain due to their high content of phytochemicals, dietary fibers, and protein. In recent years, oat protein and peptides have gained popularity as possible therapeutic or nutraceutical candidates. Generally, oat peptides with bioactive properties can be obtained by the enzymatic hydrolysis of proteins and are known to have a variety of regulatory functions. This review article focused on the nutraceutical worth of oat proteins and peptides and also describes the application of oat protein as a functional ingredient. Outcomes of this study indicated that oat protein and peptides present various therapeutical properties, including antidiabetic, antioxidant, antihypoxic, antihypertensive, antithrombotic, antifatigue, immunomodulatory, and hypocholestrolaemic. However, most of the conducted studies are limited to in vitro conditions and less data is available on assessing the effectiveness of the oat peptides in vivo. Future efforts should be directed at performing systematic animal studies; in addition, clinical trials also need to be conducted to fully support the development of functional food products, nutraceutical, and therapeutical applications.
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Affiliation(s)
- Hamad Rafique
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Rui Dong
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Xiaolong Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Aamina Alim
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan
| | - Lu Li
- Guilin Seamild Food Co., Ltd., Guilin, China
| | - Liang Zou
- School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Xinzhong Hu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
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8
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Health Benefits of Cereal Grain- and Pulse-Derived Proteins. Molecules 2022; 27:molecules27123746. [PMID: 35744874 PMCID: PMC9229611 DOI: 10.3390/molecules27123746] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 12/19/2022] Open
Abstract
Pulses and whole grains are considered staple foods that provide a significant amount of calories, fibre and protein, making them key food sources in a nutritionally balanced diet. Additionally, pulses and whole grains contain many bioactive compounds such as dietary fibre, resistant starch, phenolic compounds and mono- and polyunsaturated fatty acids that are known to combat chronic disease. Notably, recent research has demonstrated that protein derived from pulse and whole grain sources contains bioactive peptides that also possess disease-fighting properties. Mechanisms of action include inhibition or alteration of enzyme activities, vasodilatation, modulation of lipid metabolism and gut microbiome and oxidative stress reduction. Consumer demand for plant-based proteins has skyrocketed primarily based on the perceived health benefits and lower carbon footprint of consuming foods from plant sources versus animal. Therefore, more research should be invested in discovering the health-promoting effects that pulse and whole grain proteins have to offer.
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9
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The Hypolipidemic and Antioxidant Activity of Wheat Germ and Wheat Germ Protein in High-Fat Diet-Induced Rats. Molecules 2022; 27:molecules27072260. [PMID: 35408659 PMCID: PMC9000699 DOI: 10.3390/molecules27072260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/26/2022] [Accepted: 03/27/2022] [Indexed: 12/22/2022] Open
Abstract
Background: So far, no articles have discussed the hypolipidemic effect of wheat germ protein in in vivo experiments. Objective: In this study, we investigated the effects of wheat germ protein (WGP, 300 mg/kg/day) and wheat germ (WG, 300 mg/kg/day) on cholesterol metabolism, antioxidant activities, and serum and hepatic lipids in rats fed a high-fat diet through gavage. Methodology: We used 4-week-old male Wistar 20 rats in our animal experiment. Biochemical indicators of fecal, serum and liver were tested by kits or chemical methods. We also conducted the cholesterol micellar solubility experiment in vitro. Results: After 28 days of treatment, our results showed that WGP significantly reduced the serum levels of total cholesterol (p < 0.05) and nonhigh-density lipoprotein cholesterol (p < 0.05), improved the enzymatic activities of cholesterol 7-α hydroxylase (p < 0.01) and low-density lipoprotein receptor (p < 0.01) and increased bile acid excretion in feces (p < 0.05). Conclusion: WG did not significantly increase bile acid excretion in feces or decrease serum levels of total cholesterol. Moreover, WGP and WG both presented significant antioxidant activity in vivo (p < 0.05) and caused a significant reduction in cholesterol micellar solubility in vitro (p < 0.001). Therefore, WGP may effectively prevent hyperlipidemia and its complications as WGP treatment enhanced antioxidant activity, decreased the concentration of serum lipids and improved the activity of enzymes involved in cholesterol metabolism.
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10
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Bouchard J, Valookaran AF, Aloud BM, Raj P, Malunga LN, Thandapilly SJ, Netticadan T. Impact of oats in the prevention/management of hypertension. Food Chem 2022; 381:132198. [PMID: 35123221 DOI: 10.1016/j.foodchem.2022.132198] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 12/24/2022]
Abstract
Oats are a rich source of a soluble fibre, beta-glucan, phenolic compounds, as well as functional lipid and protein components that could potentially aid in preventing and managing hypertension. Processing techniques commonly used to manufacture oat based foods have been shown to improve its physiological efficacy. Hypertension is a common condition that is a risk factor for cardiovascular disease, a primary cause of mortality worldwide. Though exercise and pharmacological interventions are often used in the management of hypertension, diet is an incredibly important factor. One preclinical study and a handful of clinical studies have shown that oat components/products are effective in lowering blood pressure. However, research in this area is limited and more studies are needed to elucidate the anti-hypertensive potential of oats.
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Affiliation(s)
- Jenny Bouchard
- Richardson Center for Functional Foods and Nutraceuticals, Winnipeg, MB, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Aleena Francis Valookaran
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada; Canadian Centre for Agri-Food Research in Health and Medicine , Winnipeg, MB, Canada
| | | | - Pema Raj
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada; Canadian Centre for Agri-Food Research in Health and Medicine , Winnipeg, MB, Canada
| | - Lovemore Nkhata Malunga
- Richardson Center for Functional Foods and Nutraceuticals, Winnipeg, MB, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Sijo Joseph Thandapilly
- Richardson Center for Functional Foods and Nutraceuticals, Winnipeg, MB, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada.
| | - Thomas Netticadan
- Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada; Canadian Centre for Agri-Food Research in Health and Medicine , Winnipeg, MB, Canada; Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB, Canada.
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11
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Tong LT, Xiao T, Wang L, Lu C, Liu L, Zhou X, Wang A, Qin W, Wang F. Plant protein reduces serum cholesterol levels in hypercholesterolemia hamsters by modulating the compositions of gut microbiota and metabolites. iScience 2021; 24:103435. [PMID: 34927019 PMCID: PMC8649741 DOI: 10.1016/j.isci.2021.103435] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 07/10/2021] [Accepted: 11/10/2021] [Indexed: 01/06/2023] Open
Abstract
Plant proteins exert effects of reducing cardio-cerebrovascular disease-related mortality partly via cholesterol-lowering, which was associated with gut microbiota. Here, we verify that there are significant differences in cholesterol levels among hamsters consuming different proteins. The decisive roles of gut microbiota in regulating host cholesterol are illustrated by the fact that the difference in serum cholesterol levels between hamsters feeding with pea protein and pork protein disappeared when treated with antibiotics. The results of cross-over intervention of pea and pork protein show that serum cholesterol levels are reversed with dietary exchange. The corresponding changes in microbiota suggest that Muribaculaceae are responsible for the inhibitory effect of pea protein on serum cholesterol level, whereas the opposite effect of pork protein is due to Erysipelotrichaceae. Moreover, pea protein supplement alters cecal metabolites including arginine/histidine pathway, primary bile acid biosynthesis, short-chain fatty acids, and other lipid-like molecules involved in cholesterol metabolism.
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Affiliation(s)
- Li-Tao Tong
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Tianzhen Xiao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Lili Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Cong Lu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Liya Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Xianrong Zhou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Aixia Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Wanyu Qin
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
| | - Fengzhong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Ministry of Agriculture, Beijing, 100193, China
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12
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Paudel D, Dhungana B, Caffe M, Krishnan P. A Review of Health-Beneficial Properties of Oats. Foods 2021; 10:foods10112591. [PMID: 34828872 PMCID: PMC8625765 DOI: 10.3390/foods10112591] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/28/2021] [Accepted: 10/23/2021] [Indexed: 12/31/2022] Open
Abstract
Oat is among the food crops and ancient grains cultivated and consumed worldwide. It is gaining in popularity owing to its nutritional composition and multifunctional benefits of select bioactive compounds. Beta-glucan is an important component of dietary fiber found in oat grains. It is the major active compound in oats with proven cholesterol-lowering and antidiabetic effects. Oats also provide substantial levels of other bioactive compounds such as phenolic acids, tocols, sterols, avenacosides, and avenanthramides. The consumption of oats has been determined to be beneficial for human health by promoting immunomodulation and improving gut microbiota. In addition, oat consumption assists in preventing diseases such as atherosclerosis, dermatitis, and some forms of cancer. While much has been published in relation to oat nutrients and oat fibers and their impact on major diseases, the oat industries and consumers may benefit from greater knowledge and understanding of clinical effects, range of occurrence, distribution, therapeutic doses and food functional attributes of other oat bioactives such as avenanthramides and saponins as well as other anti-inflammatory agents found in the cereal. This review focuses on the various studies relevant to the contribution of the consumption of oats and oat-based products in preventing human diseases and promoting human health.
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Affiliation(s)
- Devendra Paudel
- Dairy and Food Science Department, South Dakota State University, Brookings, SD 57007, USA;
| | - Bandana Dhungana
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USA; (B.D.); (M.C.)
| | - Melanie Caffe
- Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USA; (B.D.); (M.C.)
| | - Padmanaban Krishnan
- Dairy and Food Science Department, South Dakota State University, Brookings, SD 57007, USA;
- Correspondence:
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13
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Gao S, Chen Y, Zhao J, Jing R, Guo K, Wang L, Li X, Li C, Hu Z, Xu N. Oat β-glucan ameliorates epidermal barrier disruption by upregulating the expression of CaSR through dectin-1-mediated ERK and p38 signaling pathways. Int J Biol Macromol 2021; 185:876-889. [PMID: 34237364 DOI: 10.1016/j.ijbiomac.2021.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/21/2021] [Accepted: 07/01/2021] [Indexed: 11/28/2022]
Abstract
The integrity of the epidermal barrier and the maintenance of barrier homeostasis depend on the dynamic balance between the proliferation and differentiation of keratinocytes. Calcium (Ca2+) plays a crucial role in maintaining a balance of these two processes as well as in the formation of an epidermal permeability barrier. In this study, we showed that topical application of oat β-glucan (OG) could ameliorate epidermal hyperplasia and accelerate the recovery of the epidermal barrier by promoting epidermal differentiation. Mechanistic studies revealed a positive interaction between OG and the dectin-1 receptor, and this interaction could lead to an upregulated expression of the calcium-sensing receptor (CaSR) via activation of the downstream ERK and p38 pathways. This consequently increased the sensitivity of keratinocytes to extracellular Ca2+ under the condition of calcium loss following the disruption of the epidermal barrier, resulting in the maintenance of normal keratinocyte differentiation in the epidermis, and ultimately promoting the recovery of the epidermal barrier. These findings clearly demonstrated the healing effect of OG on a physically damaged epidermal barrier. Thus, OG could be considered a valuable component in the development of skin repair agents.
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Affiliation(s)
- Shuang Gao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Yu Chen
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Jungang Zhao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Rongrong Jing
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - KeKe Guo
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Lusheng Wang
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Xuenan Li
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Chengliang Li
- LB Cosmeceutical Technology Co., Ltd., Shanghai 200233, China
| | - Zhenlin Hu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China; School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Nuo Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China.
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14
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Yao ZD, Cao YN, Peng LX, Yan ZY, Zhao G. Coarse Cereals and Legume Grains Exert Beneficial Effects through Their Interaction with Gut Microbiota: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:861-877. [PMID: 33264009 DOI: 10.1021/acs.jafc.0c05691] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Coarse cereals and legume grains (CCLGs) are rich in specific macro- and functional elements that are considered important dietary components for maintaining human health. Therefore, determining the precise nutritional mechanism involved in exerting the health benefits of CCLGs can help understand dietary nutrition in a better manner. Evidence suggests that gut microbiota play a crucial role in the function of CCLGs via their complicated interplay with CCLGs. First, CCLGs modulate gut microbiota and function. Second, gut microbiota convert CCLGs into compounds that perform different functions. Third, gut microbiota mediate interactions among different CCLG components. Therefore, using gut microbiota to expound the nutritional mechanism of CCLGs is important for future studies. A precise and rapid gut microbiota research model is required to screen and evaluate the quality of CCLGs. The outcomes of such research may promote the rapid discovery, classification, and evaluation of CCLG resources, thereby opening a new opportunity to guide nutrition-based development of CCLG products.
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Affiliation(s)
- Zhen-Dong Yao
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu, Sichuan 610106, People's Republic of China
| | - Ya-Nan Cao
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu, Sichuan 610106, People's Republic of China
| | - Lian-Xin Peng
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu, Sichuan 610106, People's Republic of China
| | - Zhu-Yun Yan
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, People's Republic of China
| | - Gang Zhao
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu, Sichuan 610106, People's Republic of China
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15
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Effects of different delivering matrices of β-glucan on lipids in mildly hypercholesterolaemic individuals: a meta-analysis of randomised controlled trials. Br J Nutr 2020; 125:294-307. [DOI: 10.1017/s0007114520001610] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstractβ-Glucan has been reported for its health benefits on blood lipids in hypercholesterolaemic individuals for years. However, people have paid little attention to the effects of β-glucan in populations with mild hypercholesterolaemia as well as the various delivering matrices. Our objective was to perform a meta-analysis to analyse the effects of β-glucan with different delivering matrices in mildly hypercholesterolaemic individuals. After conducting a comprehensive search in Web of Science, PubMed, Scopus and Cochrane Library, a total of twenty-one randomised controlled trials involving 1120 participants were identified to measure the pooled effect. The overall results indicated that consuming a dose of ≥3 g/d of β-glucan for at least 3 weeks could significantly reduce total cholesterol (TC) (−0·27 mmol/l, 95 % CI −0·33, −0·21, P < 0·001) and LDL-cholesterol (−0·26 mmol/l, 95% CI −0·32, −0·20, P < 0·001) compared with the control group in mildly hypercholesterolaemic individuals, while no significant difference was observed in TAG (−0·03 mmol/l, 95% CI −0·11, 0·06, P = 0·521) and HDL-cholesterol (0·01 mmol/l, 95% CI −0·03, 0·04, P = 0·777). There was evidence for modest unexplained heterogeneity in the meta-analysis. In conclusion, β-glucan can significantly reduce risk factors like TC and LDL-cholesterol for CVD in mildly hypercholesterolaemic individuals; furthermore, it appears that the effects of food matrices with both ‘solid products’ and ‘liquid products’ where β-glucan was incorporated into were ranked as the best way to exert its beneficial properties, while ‘liquid’ and ‘solid’ products were ranked as the second and third positions, respectively.
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16
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Liang TT, Tong LT, Geng DH, Wang LL, Zhou XR, Pu HY, Jia W, Wu QP, Huang JR. Wheat Gluten Regulates Cholesterol Metabolism by Modulating Gut Microbiota in Hamsters with Hyperlipidemia. J Oleo Sci 2019; 68:909-922. [PMID: 31484903 DOI: 10.5650/jos.ess18257] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this research was to evaluate the effect of wheat gluten on gut microbiota from hamsters and also analyse whether alterations in microbiota could result in wheat gluten's lipid-lowering properties. Four weeks male hamsters were divided into 3 groups (n=10). Two hypercholesterolemic groups were fed for 35 days with hypercholesterolemic diet, containing 20% (w/w) wheat gluten or casein. Wheat gluten significantly reduced serum total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) concentrations, and also decreased the liver total cholesterol (TC), free cholesterol (FC), cholesterol ester (CE), triglycerides (TG) concentrations. Wheat gluten group had a higher fecal lipids, total cholesterol (TC) and bile acids (BA) than that of casein group (p < 0.05). Moreover, wheat gluten significantly increased total short-chain fatty acids (SCFA) concentrations in feces. Sequencing of 16S rRNA gene revealed that intake of wheat gluten decreased the relative abundances of Firmicutes and Erysipelotrichaceae, but to increased the relative abundances of Bateroidetes, Bacteroidales_S24-7_group and Ruminococcaceae. The lipid lowering properties of wheat gluten was associated with the lower ratio of Firmicutes/Bateroidetes, the lower of the bacterial taxa Erysipelotrichaceae and the higher of the bacterial taxa Bacteroidales_S24-7_group and Ruminococcaceae. These results suggest that wheat gluten modulate cholesterol metabolism by altering intestinal microflora.
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Affiliation(s)
- Ting-Ting Liang
- School of Food and Biological Engineering, Shanxi University of Science and Technology
| | - Li-Tao Tong
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Ministry of Agriculture
| | - Dong-Hui Geng
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Ministry of Agriculture
| | - Li-Li Wang
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Ministry of Agriculture
| | - Xian-Rong Zhou
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Ministry of Agriculture
| | - Hua-Yin Pu
- School of Food and Biological Engineering, Shanxi University of Science and Technology
| | - Wei Jia
- School of Food and Biological Engineering, Shanxi University of Science and Technology
| | - Qing-Ping Wu
- Guangdong Institute of Microbiology, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, State Key Laboratory of Applied Microbiology
| | - Jun-Rong Huang
- School of Food and Biological Engineering, Shanxi University of Science and Technology
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17
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Identification of a novel cholesterol-lowering dipeptide, phenylalanine-proline (FP), and its down-regulation of intestinal ABCA1 in hypercholesterolemic rats and Caco-2 cells. Sci Rep 2019; 9:19416. [PMID: 31857643 PMCID: PMC6923426 DOI: 10.1038/s41598-019-56031-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 12/04/2019] [Indexed: 12/12/2022] Open
Abstract
There has been no report about in vivo active cholesterol-lowering dipeptide in any protein origin, despite their potential health benefits. Cattle heart protein hydrolysate ultra-filtrate (HPHU, molecular weight < ca. 1,000 Da peptide mixture) exhibits cholesterol-lowering activity in hypercholesterolemic rats, but the active peptide in HPHU that lowers serum cholesterol levels and its molecular mechanism are unknown. In this study, we separated and purified HPHU to identify a novel cholesterol-lowering dipeptide (phenylalanine-proline, FP) and characterized the mechanism underlying its effects in vivo and in vitro. We identified FP as an active peptide from HPHU by MALDI-TOF mass spectrometry. FP significantly decreased serum total and non-HDL cholesterol and hepatic cholesterol levels in rats. FP significantly increased serum HDL cholesterol, accompanied by a significant decrease in the atherogenic index. FP also significantly increased fecal cholesterol and acidic steroid excretion. Moreover, FP significantly decreased ATP-binding cassette transporter A1 (ABCA1) expression in the rat jejunum and reduced cholesterol absorption in Caco-2 cells. We found a novel cholesterol-lowering dipeptide FP that could improve cholesterol metabolism via the down-regulation of intestinal ABCA1. The cholesterol-lowering action induced by FP was disappeared in PepT1KO mice. FP-induced cholesterol-lowering action is mediated via PepT1 in mice.
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18
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Joyce SA, Kamil A, Fleige L, Gahan CGM. The Cholesterol-Lowering Effect of Oats and Oat Beta Glucan: Modes of Action and Potential Role of Bile Acids and the Microbiome. Front Nutr 2019; 6:171. [PMID: 31828074 PMCID: PMC6892284 DOI: 10.3389/fnut.2019.00171] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/23/2019] [Indexed: 12/13/2022] Open
Abstract
Consumption of sufficient quantities of oat products has been shown to reduce host cholesterol and thereby modulate cardiovascular disease risk. The effects are proposed to be mediated by the gel-forming properties of oat β-glucan which modulates host bile acid and cholesterol metabolism and potentially removes intestinal cholesterol for excretion. However, the gut microbiota has emerged as a major factor regulating cholesterol metabolism in the host. Oat β-glucan has been shown to modulate the gut microbiota, particularly those bacterial species that influence host bile acid metabolism and production of short chain fatty acids, factors which are regulators of host cholesterol homeostasis. Given a significant role for the gut microbiota in cholesterol metabolism it is likely that the effects of oat β-glucan on the host are multifaceted and involve regulation of microbe-host interactions at the gut interface. Here we consider the potential for oat β-glucan to influence microbial populations in the gut with potential consequences for bile acid metabolism, reverse cholesterol transport (RCT), short-chain fatty acid (SCFA) production, bacterial metabolism of cholesterol and microbe-host signaling.
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Affiliation(s)
- Susan A Joyce
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Alison Kamil
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL, United States
| | - Lisa Fleige
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL, United States
| | - Cormac G M Gahan
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,School of Microbiology, University College Cork, Cork, Ireland.,School of Pharmacy, University College Cork, Cork, Ireland
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19
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Huang K, Yu W, Li S, Guan X, Liu J, Song H, Liu D, Duan R. Effect of embryo-remaining oat rice on the lipid profile and intestinal microbiota in high-fat diet fed rats. Food Res Int 2019; 129:108816. [PMID: 32036900 DOI: 10.1016/j.foodres.2019.108816] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 11/08/2019] [Accepted: 11/10/2019] [Indexed: 01/01/2023]
Abstract
Embryo-remaining oat rice (EROR), as a newly developed oat product, is popular in China for its good taste, but little is known about its healthy functions. In this study, the effects of EROR on lipid metabolism regulation were investigated in in vitro and in vivo models. The results showed that the oat ethanol extracts significantly alleviated lipid accumulation, total cholesterol and triglyceride levels in HepG2 cells. EROR supplementation dramatically improved the lipid profile in the serum and liver and downregulated the expression levels of HMGCR, SREBP-1C and FAS, which are related to lipid metabolic disorder in high-fat diet (HFD) fed rats. A HFD decreases the production of short-chain fatty acids (SCFAs) in the cecum, which are related to intestinal microbiota dysbiosis. The intake of EROR significantly increased the total SCFAs, acetate and propionate and promoted the abundance of SCFA-producing bacteria. Furthermore, the intake of EROR led to abundant increases in Bifidobacterium and Akkermansia and decreases of Rombutsia, Fusicatenibacter, Holdemanella and Turicibacter, which were negatively and positively correlated with the lipid metabolism-related indices. These results provide evidence that EROR is a good functional food candidate to ameliorate lipid metabolic disorder and hyperlipidemia.
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Affiliation(s)
- Kai Huang
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Wenwen Yu
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Sen Li
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Xiao Guan
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China.
| | - Jing Liu
- College of Information Engineering, Shanghai Maritime University, Shanghai 200135, PR China
| | - Hongdong Song
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Dandan Liu
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Ruiqian Duan
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
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20
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Naked Oat ( Avena nuda L.) Oligopeptides:Immunomodulatory Effects on Innate and AdaptiveImmunity in Mice via Cytokine Secretion, AntibodyProduction, and Th Cells Stimulation. Nutrients 2019; 11:nu11040927. [PMID: 31022989 PMCID: PMC6520772 DOI: 10.3390/nu11040927] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/16/2019] [Accepted: 04/22/2019] [Indexed: 02/02/2023] Open
Abstract
The study aimed to investigate the immunomodulatory activity of oligopeptides derived from oat (Avena nuda L.) (OOPs). Healthy female BALB/c mice were randomly assigned to five groups, given deionized water (control) and 0.25, 0.5, 1.0, and 2.0 g/kg body weight (BW) of OOPs daily by intragastric administration. Seven assays were performed to determine the immunomodulatory effects of OOPs on immune organ ratios, cellular and humoral immune responses, macrophage phagocytosis, and natural killer (NK) cell activity. Spleen T lymphocyte subpopulations (by flow cytometry), serum cytokine and immunoglobulin levels (by multiplex sandwich immunoassays) were determined to evaluate how OOPs affected the immune system. Our results showed that OOPs could significantly improve innate and adaptive immune responses in mice through the enhancement of cell-mediated and humoral immunity, macrophage phagocytosis capacity, and NK cell activity. We concluded that the immunomodulatory effects might be attributed to increased T and Th cell percentages, serum interferon (IFN)-γ, interleukin (IL)-1 α, IL-2, IL-6, IL-10, IL-12, tumor necrosis factor (TNF)- α, and granulocyte-macrophage colony-stimulating factor (GM-CSF) secretions as well as immunoglobulin (Ig) A, IgG, and IgM productions. These results indicate that dietary OOPs could be considered as promising immunomodulators with dosages ranging from 0.25 to 2.0 g/kg BW.
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21
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Hypoglycemic Effects of Oat Oligopeptides in High-Calorie Diet/STZ-Induced Diabetic Rats. Molecules 2019; 24:molecules24030558. [PMID: 30717466 PMCID: PMC6384573 DOI: 10.3390/molecules24030558] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/11/2019] [Accepted: 02/01/2019] [Indexed: 01/11/2023] Open
Abstract
The study was aimed to determine whether treatment with oat oligopeptides (OOPs) could modulate hyperglycemia related to type 2 diabetes mellitus (T2DM) in Sprague–Dawley (SD) rats. Diabetic SD rats modeling by a joint effect of high-calorie diet for 45 days and twice intraperitoneal injection of 30 mg/kg streptozotocin at one-week interval were observed with or without OOPs administration (0.25, 0.50, 1.00, and 2.00 g/kg Body Weight) for 12 weeks. Fasting blood glucose (FBG), oral glucose test tolerance (OGTT), serum insulin, level of antioxidant, and hepatic enzymes were measured. In addition, frequency of micturition was recorded in this study for the first time. It was observed that the administration of OOPs (2.00 g/kg Body Weight) resulted in a significant decrease (p < 0.05) in FBG since 6th week and a significant decrease (p < 0.05) in the OGTT-AUC on 6th and 10th week. In addition, the administration of OOPs (2.00 g/kg Body Weight) reduced HOMA-IR index and 24-h urine volume significantly (p < 0.05) whereas increased SOD activity significantly (p < 0.05). These results suggested that OOPs may have a hypoglycemic effect in diabetic rats.
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22
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Grundy MML, Fardet A, Tosh SM, Rich GT, Wilde PJ. Processing of oat: the impact on oat's cholesterol lowering effect. Food Funct 2018; 9:1328-1343. [PMID: 29431835 PMCID: PMC5885279 DOI: 10.1039/c7fo02006f] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 12/31/2022]
Abstract
Epidemiological and interventional studies have clearly demonstrated the beneficial impact of consuming oat and oat-based products on serum cholesterol and other markers of cardiovascular disease. The cholesterol-lowering effect of oat is thought to be associated with the β-glucan it contains. However, not all food products containing β-glucan seem to lead to the same health outcome. Overall, highly processed β-glucan sources (where the oat tissue is highly disrupted) appear to be less effective at reducing serum cholesterol, but the reasons are not well understood. Therefore, the mechanisms involved still need further clarification. The purpose of this paper is to review current evidence of the cholesterol-lowering effect of oat in the context of the structure and complexity of the oat matrix. The possibility of a synergistic action and interaction between the oat constituents promoting hypocholesterolaemia is also discussed. A review of the literature suggested that for a similar dose of β-glucan, (1) liquid oat-based foods seem to give more consistent, but moderate reductions in cholesterol than semi-solid or solid foods where the results are more variable; (2) the quantity of β-glucan and the molecular weight at expected consumption levels (∼3 g day-1) play a role in cholesterol reduction; and (3) unrefined β-glucan-rich oat-based foods (where some of the plant tissue remains intact) often appear more efficient at lowering cholesterol than purified β-glucan added as an ingredient.
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Affiliation(s)
- Myriam M-L Grundy
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
| | - Anthony Fardet
- INRA, JRU 1019, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand & Université de Clermont, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Susan M Tosh
- University of Ottawa, Université, Salle 118, Ottawa, ON K1N 6N5 Canada.
| | - Gillian T Rich
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
| | - Peter J Wilde
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
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23
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Martínez-Villaluenga C, Peñas E. Health benefits of oat: current evidence and molecular mechanisms. Curr Opin Food Sci 2017. [DOI: 10.1016/j.cofs.2017.01.004] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Andersson KE, Chawade A, Thuresson N, Rascon A, Öste R, Sterner O, Olsson O, Hellstrand P. Wholegrain oat diet changes the expression of genes associated with intestinal bile acid transport. Mol Nutr Food Res 2017; 61. [DOI: 10.1002/mnfr.201600874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 02/02/2017] [Accepted: 02/05/2017] [Indexed: 12/25/2022]
Affiliation(s)
| | - Aakash Chawade
- Department of Plant Breeding; Swedish University of Agricultural Sciences; Alnarp Sweden
| | | | - Ana Rascon
- Food for Health Science Centre; Lund University; Sweden
| | - Rickard Öste
- Food for Health Science Centre; Lund University; Sweden
| | - Olov Sterner
- Department of Chemistry; Lund University; Sweden
| | - Olof Olsson
- Department of Pure and Applied Biochemistry; Lund University; Sweden
| | - Per Hellstrand
- Department of Experimental Medical Science; Lund University; Sweden
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25
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Tong LT, Ju Z, Qiu J, Wang L, Liu L, Zhou X, Zhou S. Peptide GEQQQQPGM derived from rice α-globulin reduces the risk of atherosclerosis in hamsters by improving vascular endothelial cells injury. RSC Adv 2017. [DOI: 10.1039/c7ra08304a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The amino acid sequence of the peptide, GEQQQQPGM was determined by LC-mass spectrometry (MS)/MS.
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Affiliation(s)
- Li-Tao Tong
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Zhiyuan Ju
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Ju Qiu
- Institute of Food and Nutrition Development
- Ministry of Agriculture
- Beijing 100081
- China
| | - Lili Wang
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Liya Liu
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Xianrong Zhou
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Sumei Zhou
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
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