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Ellouze I, Korlagunta K, Lucas EA, Payton M, Singar S, Arjmandi BH. The Effects of Flaxseed Consumption on Glycemic Control in Native American Postmenopausal Women with Hyperglycemia and Hyperlipidemia. Healthcare (Basel) 2024; 12:1392. [PMID: 39057535 PMCID: PMC11276366 DOI: 10.3390/healthcare12141392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/30/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
Glucose control in postmenopausal women is influenced by many factors, such as hormones, lifestyle variables, and genetics. Limited data exist on the effect of whole flaxseed on glucose status in postmenopausal Native American women. The aim of this study was to investigate the glucose management effect of a flaxseed dietary intervention on postmenopausal Native American women. In this study, 55 Native American postmenopausal women (aged 47-63 years) with borderline hyperglycemia (>100 and <126 mg/dL) and mild to moderate hypercholestorolemia (≥200 to ≤380 mmol/L), who were not on hormone replacement therapy, were enrolled. Participants were randomly assigned to one of the three dietary regimens (control, flaxseed, and flaxseed + fiber) for three months, receiving interventions in the form of bread, muffins, and flaxseed powder. Despite daily consumption of flaxseed across diverse food formats, no significant changes in glucose (p = 0.3, p = 0.2), insulin levels (p = 0.59, p = 0.9), or HOMA-IR (p = 0.84, p = 0.66) were observed compared to their respective baseline values within the flaxseed and flaxseed + fiber groups, respectively. Conversely, the control group showed a significant rise in final glucose values from baseline (p = 0.01). However, the incorporation of ground flaxseed into low-glycemic foods holds potential for beneficial effects through maintaining glucose status among postmenopausal Native American women. This research provides critical insights into the effects of flaxseed, emphasizing the need for continued exploration to understand its role in supporting glucose management among postmenopausal Native American women. Further exploration is required to investigate the potential long-term impact and the use of flaxseed in managing glucose levels in this demographic.
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Affiliation(s)
- Ines Ellouze
- Functional Physiology and Bio-Resources Valorization Laboratory, Higher Institute of Biotechnology of Beja, Jendouba University, Beja 9000, Tunisia
| | | | - Edralin A. Lucas
- Nutritional Sciences, College of Education and Human Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Mark Payton
- Biomedical Sciences, Rocky Vista University, Englewood, CO 80112, USA;
| | - Saiful Singar
- Nutrition, Food, and Exercise Sciences, College of Human Sciences, Florida State University, Tallahassee, FL 32306, USA
| | - Bahram H. Arjmandi
- Nutrition, Food, and Exercise Sciences, College of Human Sciences, Florida State University, Tallahassee, FL 32306, USA
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Li A, Gao J, Li Y, Qi S, Meng T, Yu S, Zhang Y, He Q. Efficacy of oats in dyslipidemia: a systematic review and meta-analysis. Food Funct 2024; 15:3232-3245. [PMID: 38441173 DOI: 10.1039/d3fo04394k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Background: In recent years, oats' effect on lowering serum cholesterol has been recognized. However, no systematic reviews summarized the effect of daily consumption of oat-based products on serum lipids in patients with dyslipidemia. Methods: We searched eight databases and two clinical trial registries from inception to July 31, 2023. We included randomized controlled trials (RCTs) evaluating the efficacy of oat-based products (≥4 weeks) on lipid levels or cardiovascular events in patients with dyslipidemia. Two authors independently screened articles, extracted data and assessed the risk of bias of included studies with Cochrane risk-of-bias tool 2.0. We used STATA 17.0 to conduct meta-analysis and Grading of Recommendations Assessment, Development and Evaluation (GRADE) to assess the certainty of evidence. Results: We finally included 17 eligible trials with 1731 subjects. The oat intervention varied from oat β-glucan-based products to oat bran-based products and wholegrain oat. Overall, the risk of bias of included trials was high or some concerns were noted because of the inadequate randomization, allocation concealment, and inappropriate data analysis method. Compared to the placebo or usual diet, one study indicated that oat-based products have no significant difference in major cardiovascular events. Pooled estimates showed that oat-based products may result in a large reduction in LDL-C (WMD, -0.24 mmol L-1; 95% CI: -0.33, -0.15) (moderate certainty) and TC (WMD, -0.32 mmol L-1; 95% CI: -0.48, -0.17) (moderate certainty). Compared to other diets (mainly other cereals), oat-based products probably reduce the level of LDL-C (WMD, -0.17 mmol L-1; 95% CI: -0.25, -0.08) (moderate certainty) and TC (WMD, -0.21 mmol L-1; 95% CI: -0.30, -0.12) (moderate certainty). Both groups showed that oat-based products had little effect on HDL-C and TG (moderate certainty). Oat-related adverse events were mostly gastrointestinal such as diarrhea, nausea, and flatulence being the most prevalent. Conclusions: Oat-based products may reduce TC and LDL-C, but have little effect on TG, HDL-C, and major cardiovascular events in patients with dyslipidemia.
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Affiliation(s)
- Anqi Li
- Guang'an Men Hospital, China Academy of Chinese Medical Sciences, No. 5, Bixiange Street, Xicheng District, Beijing 100051, China.
| | - Jing Gao
- Guang'an Men Hospital, China Academy of Chinese Medical Sciences, No. 5, Bixiange Street, Xicheng District, Beijing 100051, China.
- Beijing University of Chinese Medicine, Beijing, China
| | - Yingcai Li
- Bureau of Agriculture and Rural Affairs, Yulong Naxi Autonomous County, Yunnan, China
| | - Shihao Qi
- Guang'an Men Hospital, China Academy of Chinese Medical Sciences, No. 5, Bixiange Street, Xicheng District, Beijing 100051, China.
- Beijing University of Chinese Medicine, Beijing, China
| | - Tiantian Meng
- Department of Rehabilitation, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Shanshan Yu
- Graduate School of Henan University of Chinese Medicine, Henan, China
| | - Yuqing Zhang
- Department of Health Research Methods, Evidence, and Impact (formerly the Department of Clinical Epidemiology and Biostatistics), McMaster University, HSC 2C, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada.
- CEBIM (Center for Evidence Based Integrative Medicine)-Clarity Collaboration, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qingyong He
- Guang'an Men Hospital, China Academy of Chinese Medical Sciences, No. 5, Bixiange Street, Xicheng District, Beijing 100051, China.
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Mittal RK, Mishra R, Sharma V, Purohit P. Bioactive Exploration in Functional Foods: Unlocking Nature's Treasures. Curr Pharm Biotechnol 2024; 25:1419-1435. [PMID: 38031768 DOI: 10.2174/0113892010282580231120041659] [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: 09/16/2023] [Revised: 10/25/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Functional foods offer an appealing way to improve health and prevent chronic diseases, and this subject has received much attention lately. They are effective in preventing chronic diseases like cancer, diabetes, heart disease, and obesity, according to research. OBJECTIVE This work presents an in-depth analysis of functional foods, covering key challenges from a scientific, legal, and commercial perspective. METHODS Multiple databases were searched to find studies on functional foods included in the systematic literature review. Various aspects of functional foods, from their classification, impact on human wellness, effectiveness in inhibiting chronic diseases, the regulatory environment, global market trends, and industry challenges, are all clarified in this thorough review. RESULTS This study aims to enhance understanding and establish a pathway for functional foods to be acknowledged as valid choices in the field of dietary supplements. It provides a thorough investigation of bioactive compounds present in functional foods, including but not limited to polyphenols, carotenoids, omega fatty acids, prebiotics, probiotics, and dietary fiber, along with an overview of their potential to mitigate chronic illnesses. We engage in an in-depth exploration of regulatory frameworks, shed light on groundbreaking research advancements, and meticulously examine strategies for commercialization and the variety of global challenges that accompany them. Establishing scientific consensus, navigating complex regulatory processes, dealing with skeptical consumers, and rising levels of competition are all problems that need to be solved in this field. CONCLUSION The field of functional foods can advance further, promoting better public health outcomes, by deeply comprehending and addressing these complex dimensions.
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Affiliation(s)
- Ravi K Mittal
- Department of Pharmacy, Galgotias College of Pharmacy, Greater Noida, Uttar Pradesh, 201310, India
| | - Raghav Mishra
- Department of Pharmacy, GLA University, Mathura-281406, Uttar Pradesh, India
| | - Vikram Sharma
- Department of Pharmacy, Galgotias College of Pharmacy, Greater Noida, Uttar Pradesh, 201310, India
| | - Priyank Purohit
- School of Pharmacy, Graphic Era Hill University, Dehradun, Uttarakhand, 248002, India
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Alsado C, Lopez-Aldana L, Chen L, Wismer W. Consumer Perception and Sensory Drivers of Liking of Fortified Oat Milks. Foods 2023; 12:4097. [PMID: 38002156 PMCID: PMC10670597 DOI: 10.3390/foods12224097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Oat milk was fortified with β-glucan at a level that attains health benefits and protein at a level equivalent to that of cow's milk. This study aimed to identify consumer perceptions and evaluate the sensory attributes of fortified plain and chocolate oat milks. Oat milk consumers (n = 106) evaluated four samples: C (Control), 0Pro (6.25 g/L β-glucan), LPro (6.25 g/L β-glucan and 15.23 g/L oat protein), and HPro (6.25 g/L β-glucan and 30.45 g/L oat protein); and they completed free-word association (FWA), liking ratings, just-about-right (JAR), check-all-that-apply (CATA), and conjoint analysis (CA). Oat milk was associated with sensory descriptors, environmental sustainability, and health benefits. C and 0Pro products were liked significantly more than LPro and HPro. C and 0Pro oat flavors and thicknesses were rated "just about right" by majority of the participants, while LPro and HPro were rated "too much". Positive CATA attributes were "smooth", "fresh", and "oat-like" while negative attributes were "rancid", "sandy", and "grainy". The CA results showed consumer interest in oat milk fortified with oat protein, containing β-glucan at a level recommended for health benefits, and with protein levels higher than cow's milk. Based on the results, β-glucan-fortified oat milk is acceptable while oat protein fortification requires reformulation or substitution with another source.
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Affiliation(s)
| | | | | | - Wendy Wismer
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (C.A.); (L.L.-A.); (L.C.)
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Teaney NA, Cyr NE. FoxO1 as a tissue-specific therapeutic target for type 2 diabetes. Front Endocrinol (Lausanne) 2023; 14:1286838. [PMID: 37941908 PMCID: PMC10629996 DOI: 10.3389/fendo.2023.1286838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023] Open
Abstract
Forkhead box O (FoxO) proteins are transcription factors that mediate many aspects of physiology and thus have been targeted as therapeutics for several diseases including metabolic disorders such as type 2 diabetes mellitus (T2D). The role of FoxO1 in metabolism has been well studied, but recently FoxO1's potential for diabetes prevention and therapy has been debated. For example, studies have shown that increased FoxO1 activity in certain tissue types contributes to T2D pathology, symptoms, and comorbidities, yet in other tissue types elevated FoxO1 has been reported to alleviate symptoms associated with diabetes. Furthermore, studies have reported opposite effects of active FoxO1 in the same tissue type. For example, in the liver, FoxO1 contributes to T2D by increasing hepatic glucose production. However, FoxO1 has been shown to either increase or decrease hepatic lipogenesis as well as adipogenesis in white adipose tissue. In skeletal muscle, FoxO1 reduces glucose uptake and oxidation, promotes lipid uptake and oxidation, and increases muscle atrophy. While many studies show that FoxO1 lowers pancreatic insulin production and secretion, others show the opposite, especially in response to oxidative stress and inflammation. Elevated FoxO1 in the hypothalamus increases the risk of developing T2D. However, increased FoxO1 may mitigate Alzheimer's disease, a neurodegenerative disease strongly associated with T2D. Conversely, accumulating evidence implicates increased FoxO1 with Parkinson's disease pathogenesis. Here we review FoxO1's actions in T2D conditions in metabolic tissues that abundantly express FoxO1 and highlight some of the current studies targeting FoxO1 for T2D treatment.
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Affiliation(s)
- Nicole A. Teaney
- Stonehill College, Neuroscience Program, Easton, MA, United States
| | - Nicole E. Cyr
- Stonehill College, Neuroscience Program, Easton, MA, United States
- Stonehill College, Department of Biology, Easton, MA, United States
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Guo H, Wu H, Hou Y, Hu P, Du J, Cao L, Yang R, Dong X, Li Z. Oat β-D-glucan ameliorates type II diabetes through TLR4/PI3K/AKT mediated metabolic axis. Int J Biol Macromol 2023; 249:126039. [PMID: 37516222 DOI: 10.1016/j.ijbiomac.2023.126039] [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: 11/25/2022] [Revised: 07/19/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Diabetes is one of the major global public health problems. Our previous results found that oat β-D-glucan exhibited ameliorative effects on diabetic mice, but the underlying mechanism is unclear. The present study indicates that oat β-D-glucan increased glycogen content, decreased glycogen synthase (GS) phosphorylation and increased hepatic glycogen synthase kinase 3β (GSK3β) phosphorylation for glycogen synthesis via PI3K/AKT/GSK3-mediated GS activation. Moreover, oat β-D-glucan inhibited gluconeogenesis through the PI3K/AKT/Foxo1-mediated phosphoenolpyruvate carboxykinase (PEPCK) decrease. In addition, oat β-D-glucan enhanced glucose catabolism through elevated protein levels of COQ9, UQCRC2, COXIV and ATP5F complexes involved in oxidative phosphorylation, as well as that of TFAM, a key regulator of mitochondrial gene expression. Importantly, our results showed that oat β-D-glucan maintained hepatic glucose balance via TLR4-mediated intracellular signal. After TLR4 blocking with anti-TLR4 antibody, oat β-D-glucan had almost no effect on high glucose-induced HepG2 cells. These data revealed that oat β-D-glucan maintains glucose balance by regulating the TLR4/PI3K/AKT signal pathway.
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Affiliation(s)
- Huiqin Guo
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China; Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Haili Wu
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - YanBing Hou
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - Pengli Hu
- College of Life Science, Shanxi University, Taiyuan 030002, China
| | - Jine Du
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Lijia Cao
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Ruipeng Yang
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China
| | - Xiushan Dong
- Department of General Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan 030000, China
| | - Zhuoyu Li
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030002, China.
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Singh RP, Bhardwaj A. β-glucans: a potential source for maintaining gut microbiota and the immune system. Front Nutr 2023; 10:1143682. [PMID: 37215217 PMCID: PMC10198134 DOI: 10.3389/fnut.2023.1143682] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/03/2023] [Indexed: 05/24/2023] Open
Abstract
The human gastrointestinal (GI) tract holds a complex and dynamic population of microbial communities, which exerts a marked influence on the host physiology during homeostasis and disease conditions. Diet is considered one of the main factors in structuring the gut microbiota across a lifespan. Intestinal microbial communities play a vital role in sustaining immune and metabolic homeostasis as well as protecting against pathogens. The negatively altered gut bacterial composition has related to many inflammatory diseases and infections. β-glucans are a heterogeneous assemblage of glucose polymers with a typical structure comprising a leading chain of β-(1,4) and/or β-(1,3)-glucopyranosyl units with various branches and lengths as a side chain. β-glucans bind to specific receptors on immune cells and initiate immune responses. However, β-glucans from different sources differ in their structures, conformation, physical properties, and binding affinity to receptors. How these properties modulate biological functions in terms of molecular mechanisms is not known in many examples. This review provides a critical understanding of the structures of β-glucans and their functions for modulating the gut microbiota and immune system.
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Affiliation(s)
- Ravindra Pal Singh
- Department of Industrial Biotechnology, Gujarat Biotechnology University, Gandhinagar, Gujarat, India
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Guo H, Wu H, Kong X, Zhang N, Li H, Dong X, Li Z. Oat β-glucan ameliorates diabetes in high fat diet and streptozotocin-induced mice by regulating metabolites. J Nutr Biochem 2023; 113:109251. [PMID: 36513312 DOI: 10.1016/j.jnutbio.2022.109251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Oats are widely distributed worldwide and oat β-glucan has positive effects on human health. Particularly, oat β-glucan is reported to be beneficial in the management of type 2 diabetes. The aim of the present study is to investigate the effects of oat β-glucan and its possible underlying mechanisms on diabetes in type 2 diabetic mice that was induced by streptozotocin/high-fat diet (STZ/HFD). The data indicated that oat β-glucan significantly reduced the fasting blood glucose, improved glucose tolerance, and insulin sensitivity. The results further showed that oat β-glucan remarkably decreased the levels of total cholesterol (TCHO), total triglyceride (TG), low-density lipoprotein cholesterol (LDL-C) and free fatty acids. Moreover, oat β-glucan remarkably increased the hepatic glycogen content, but largely decreased the levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in STZ/HFD-induced diabetic mice. Histological analysis showed that oat β-glucan alleviated visceral lesions. Finally, the metabolomic analysis indicated that the metabolic profile was remarkably changed after oat β-glucan intervention in diabetic mice. There were 88 and 106 differential metabolites screened as biomarkers in negative ion mode (NEG) and positive ion mode (POS) after oat β-glucan treatment, respectively. In addition, oat β-glucan significantly affected the serum metabolites of amino acids, organic acids and bile acids. Collectively, the current study elucidates oat β-glucan displays an effective nutritional intervention in diabetes.
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Affiliation(s)
- Huiqin Guo
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, China
| | - Haili Wu
- Shanxi Key Laboratory for Research and Development of Regional Plants, College of Life Science, Shanxi University, Taiyuan, China
| | - Xiangqun Kong
- Shanxi Key Laboratory for Research and Development of Regional Plants, College of Life Science, Shanxi University, Taiyuan, China
| | - Nuonuo Zhang
- Shanxi Key Laboratory for Research and Development of Regional Plants, College of Life Science, Shanxi University, Taiyuan, China
| | - Hanqing Li
- Shanxi Key Laboratory for Research and Development of Regional Plants, College of Life Science, Shanxi University, Taiyuan, China
| | - Xiushan Dong
- Department of General Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, China
| | - Zhuoyu Li
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, China.
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Reiners S, Hebestreit S, Wedekind L, Kiehntopf M, Klink A, Rummler S, Glei M, Lorkowski S, Schlörmann W, Dawczynski C. Effect of a regular consumption of traditional and roasted oat and barley flakes on blood lipids and glucose metabolism-A randomized crossover trial. Front Nutr 2023; 10:1095245. [PMID: 36819683 PMCID: PMC9932717 DOI: 10.3389/fnut.2023.1095245] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/17/2023] [Indexed: 02/05/2023] Open
Abstract
Background Regular consumption of the soluble dietary fiber β-glucan is associated with decreased total cholesterol (TC), low-density lipoprotein (LDL) cholesterol and blood glucose. Barley and oat flakes as natural sources of β-glucan were roasted to improve sensory quality. The aim of this study was to investigate whether roasting of barley and oat flakes changes the physiological impact of the β-glucan-rich flakes on glucose and lipid metabolism. Method A five-armed randomized crossover trial design was used. The intervention study was conducted from May 2018 to May 2019 and included 32 healthy subjects with moderately increased LDL cholesterol (≥2.5 mmol/L). During the 3-week intervention periods, 80 g of roasted or traditional barley or oat flakes, or four slices of white toast bread per day were consumed for breakfast. At the start and the end of each intervention, fasting and postprandial blood was taken. The intervention periods were separated by 3-week wash-out periods. Results During the interventions with the cereal flakes, TC and LDL cholesterol concentrations were significantly reduced compared to baseline values by mean differences of 0.27-0.33 mmol/L and 0.21-0.30 mmol/L, respectively (p < 0.05), while high-density lipoprotein (HDL) cholesterol was only reduced after the intervention with barley flakes (p < 0.05). After the intervention period with toast, TC and HDL cholesterol increased (p < 0.05). The fasting levels of triglycerides, fasting blood glucose and insulin did not change in any group. The effects of traditional and roasted varieties on blood lipids did not differ between the groups. Conclusion The regular consumption of traditional or roasted barley and oat flakes contributes to the management of cardiovascular diseases by improving TC and LDL cholesterol. Clinical trial registration https://clinicaltrials.gov/ct2/show/NCT03648112, identifier NCT03648112.
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Affiliation(s)
- Sarah Reiners
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Jena, Germany
| | - Sandra Hebestreit
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Lisa Wedekind
- Institute of Medical Statistics, Computer and Data Sciences, Jena University Hospital, Jena, Germany
| | - Michael Kiehntopf
- Institute of Clinical Chemistry and Laboratory Diagnostics, Jena University Hospital, Jena, Germany
| | - Anne Klink
- Institute of Transfusion Medicine, University Hospital Jena, Jena, Germany
| | - Silke Rummler
- Institute of Transfusion Medicine, University Hospital Jena, Jena, Germany
| | - Michael Glei
- Department of Nutritional Toxicology, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Stefan Lorkowski
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Jena, Germany
- Department of Nutritional Biochemistry and Physiology, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Wiebke Schlörmann
- Department of Nutritional Toxicology, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Christine Dawczynski
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Jena, Germany
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de Morais Junior AC, Schincaglia RM, Viana RB, Armet AM, Prado CM, Walter J, Mota JF. The separate effects of whole oats and isolated beta-glucan on lipid profile: A systematic review and meta-analysis of randomized controlled trials. Clin Nutr ESPEN 2023; 53:224-237. [PMID: 36657917 DOI: 10.1016/j.clnesp.2022.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND & AIMS It is well known that dietary fiber positively impacts the microbiome and health as a whole. However, the health effects of β-glucan, a dietary fiber extracted from oats, have been questioned when administered alone or incorporated into other foods. The purpose of this systematic review and meta-analysis was to evaluate the impact of oats or β-glucan supplements on the lipid profile. METHODS Randomized controlled trials with parallel-arm or crossover blinded interventions at least two weeks in duration, for hyperlipidemic or non-hyperlipidemic men and women ≥18 years of age were selected. Only single (participants blinded) or double-blinded studies that compared oat or isolated β-glucan with a placebo/control group were considered for this review. The databases EMBASE, PubMed, Web of science and CINHAL were searched, from the earliest indexed year available online to the end of January 2022. Random-effects models were used to combine the estimated effects extracted from individual studies, and data were summarized as standardized mean difference (SMD) and 95% confidence interval (95%CI). RESULTS A total of 811 articles were screened for eligibility, and relevant data were extracted from 28 studies, totaling 1494 subjects. Oat interventions TC (-0.61, 95%CI: -0.84;-0.39, p < 0.00001, and -0.70, 95%CI: -1.07;-0.34, p = 0.0002, respectively) and LDL (-0.51, 95%CI: -0.71;-0.31, p < 0.00001, and -0.38, 95%CI: -0.60;-0.15, p = 0.001, respectively). Moreover, isolated β-glucan interventions from parallel-arm studies decreased TC (-0.73, 95%CI: -1.01;-0.45, p < 0.00001), LDL (-0.58, 95%CI: -0.85;-0.32, p < 0.0001) and triglycerides (-0.30, 95%CI: -0.49;-0.12, p = 0.001). HDL was not altered by either oat or isolated β-glucan (p > 0.05). CONCLUSION Overall, this review showed that both oat and isolated β-glucan interventions improved lipid profiles. Furthermore, the ingestion of oats or isolated β-glucan supplements are effective tools to combat dyslipidemia and should be considered in cardiovascular disease prevention.
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Affiliation(s)
- Alcides C de Morais Junior
- School of Nutrition, Federal University of Goiás, St. 227, Block 68, Setor Leste Universitário, Goiânia GO, 74.605-080, Brazil
| | - Raquel M Schincaglia
- School of Nutrition, Federal University of Goiás, St. 227, Block 68, Setor Leste Universitário, Goiânia GO, 74.605-080, Brazil; Department of Environmental and Occupational Health University of Nevada, Las Vegas, NV, USA
| | - Ricardo B Viana
- Instituto de Educação Física e Esportes, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Anissa M Armet
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
| | - Carla M Prado
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
| | - Jens Walter
- APC Microbiome Ireland, School of Microbiology, Department of Medicine, APC Microbiome Institute, University College Cork - National University of Ireland, Cork, T12 YT20, Ireland
| | - João F Mota
- School of Nutrition, Federal University of Goiás, St. 227, Block 68, Setor Leste Universitário, Goiânia GO, 74.605-080, Brazil; APC Microbiome Ireland, School of Microbiology, Department of Medicine, APC Microbiome Institute, University College Cork - National University of Ireland, Cork, T12 YT20, Ireland.
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Wassie T, Cheng B, Zhou T, Gao L, Lu Z, Xie C, Wu X. Microbiome-metabolome analysis reveals alterations in the composition and metabolism of caecal microbiota and metabolites with dietary Enteromorpha polysaccharide and Yeast glycoprotein in chickens. Front Immunol 2022; 13:996897. [PMID: 36311785 PMCID: PMC9614668 DOI: 10.3389/fimmu.2022.996897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022] Open
Abstract
The intestinal microbiome is responsible for the fermentation of complex carbohydrates and orchestrates the immune system through gut microbiota-derived metabolites. In our previous study, we reported that supplementation of Enteromorpha polysaccharide (EP) and yeast glycoprotein (YG) in combination synergistically improved antioxidant activities, serum lipid profile, and fatty acid metabolism in chicken. However, the mechanism of action of these polysaccharides remains elusive. The present study used an integrated 16S-rRNA sequencing technology and untargeted metabolomics technique to reveal the mechanism of action of EP+YG supplementation in broiler chickens fed basal diet or diets supplemented with EP+YG (200mg/kg EP + 200mg/kg YG). The results showed that EP+YG supplementation altered the overall structure of caecal microbiota as evidenced by β diversities analysis. Besides, EP+YG supplementation changed the microbiota composition by altering the community profile at the phylum and genus levels. Furthermore, Spearman correlation analysis indicated a significant correlation between altered microbiota genera vs serum cytokine levels and microbiota genera vs volatile fatty acids production. Predicted functional analysis showed that EP+YG supplementation significantly enriched amino acid metabolism, nucleotide metabolism, glycan biosynthesis and metabolism, energy metabolism, and carbohydrate metabolism. Metabolomics analysis confirmed that EP+YG supplementation modulates a myriad of caecal metabolites by increasing some metabolites, including pyruvic acid, pyridoxine, spermidine, spermine, and dopamine, and decreasing metabolites related to lipid metabolisms such as malonic acid, oleic acid, and docosahexaenoic acid. The quantitative enrichment analysis results further showed that glycolysis/gluconeogenesis, citric acid cycle, tyrosine metabolism, glycine, serine, and threonine metabolism, and cysteine and methionine metabolism were the most important enriched pathways identified with enrichment ratio >11, whereas, fatty acid biosynthesis and biosynthesis of unsaturated fatty acids pathways were suppressed. Together, the 16S-rRNA and untargeted metabolomics results uncovered that EP+YG supplementation modulates intestinal microbiota and their metabolites, thereby influencing the important metabolism pathways, suggesting a potential feed additive.
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Affiliation(s)
- Teketay Wassie
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
| | - Bei Cheng
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
| | - Tiantian Zhou
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
| | - Lumin Gao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
| | - Zhuang Lu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
| | - Chunyan Xie
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Xin Wu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
- *Correspondence: Xin Wu,
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12
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Chen C, Huang X, Wang H, Geng F, Nie S. Effect of β-glucan on metabolic diseases: A review from the gut microbiota perspective. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2022.100907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Llanaj E, Dejanovic GM, Valido E, Bano A, Gamba M, Kastrati L, Minder B, Stojic S, Voortman T, Marques-Vidal P, Stoyanov J, Metzger B, Glisic M, Kern H, Muka T. Effect of oat supplementation interventions on cardiovascular disease risk markers: a systematic review and meta-analysis of randomized controlled trials. Eur J Nutr 2022; 61:1749-1778. [PMID: 34977959 PMCID: PMC9106631 DOI: 10.1007/s00394-021-02763-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/30/2021] [Indexed: 11/04/2022]
Abstract
PURPOSE Oat supplementation interventions (OSIs) may have a beneficial effect on cardiovascular disease (CVD) risk. However, dietary background can modulate such effect. This systematic review assesses the effects of OSIs on CVD risk markers among adults, accounting for different dietary backgrounds or control arms. METHODS We included randomized clinical trials (RCTs) that assessed the effect of oat, oat beta-glucan-rich extracts or avenanthramides on CVD risk markers. RESULTS Seventy-four RCTs, including 4937 predominantly hypercholesterolemic, obese subjects, with mild metabolic disturbances, were included in the systematic review. Of these, 59 RCTs contributed to the meta-analyses. Subjects receiving an OSI, compared to control arms without oats, had improved levels of total cholesterol (TC) [weighted mean difference and (95% CI) - 0.42 mmol/L, (- 0.61; - 0.22)], LDL cholesterol [- 0.29 mmol/L, (- 0.37; - 0.20)], glucose [- 0.25 nmol/L, (- 0.36; - 0.14)], body mass index [- 0.13 kg/m2, (- 0.26; - 0.01)], weight [- 0.94 kg, (- 1.84: - 0.05)], and waist circumference [- 1.06 cm, (- 1.85; - 0.27)]. RCTs on inflammation and/or oxidative stress markers were scarce and with inconsistent findings. RCTs comparing an OSI to heterogeneous interventions (e.g., wheat, eggs, rice, etc.), showed lowered levels of glycated haemoglobin, diastolic blood pressure, HDL cholesterol and apolipoprotein B. The majority of included RCTs (81.1%) had some concerns for risk of bias. CONCLUSION Dietary OSIs resulted in lowered levels of blood lipids and improvements in anthropometric parameters among participants with predominantly mild metabolic disturbances, regardless of dietary background or control. Further high-quality trials are warranted to establish the role of OSIs on blood pressure, glucose homeostasis and inflammation markers.
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Affiliation(s)
- Erand Llanaj
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Present Address: MTA-DE Public Health Research Group, Hungarian Academy of Sciences and University of Debrecen, Debrecen, Hungary
| | - Gordana M. Dejanovic
- Department of Ophthalmology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Ezra Valido
- Swiss Paraplegic Research, Nottwil, Switzerland
| | - Arjola Bano
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
- Department of Cardiology, University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Magda Gamba
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Lum Kastrati
- Faculty of Medicine, University of Prishtina “Hasan Prishtina”, Prishtina, Kosovo
| | - Beatrice Minder
- Public Health and Primary Care Library, University Library of Bern, University of Bern, Bern, Switzerland
| | | | - Trudy Voortman
- Department of Epidemiology, Erasmus MC University Medical Centre Rotterdam, Rotterdam, The Netherlands
- Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
| | - Pedro Marques-Vidal
- Department of Medicine, Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland
- University of Lausanne, Lausanne, Switzerland
| | - Jivko Stoyanov
- Swiss Paraplegic Research, Nottwil, Switzerland
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
| | - Brandon Metzger
- Standard Process Nutrition Innovation Centre, Kannapolis, USA
| | - Marija Glisic
- Swiss Paraplegic Research, Nottwil, Switzerland
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
| | - Hua Kern
- Standard Process Nutrition Innovation Centre, Kannapolis, USA
| | - Taulant Muka
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
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14
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Telle-Hansen VH, Gaundal L, Høgvard B, Ulven SM, Holven KB, Byfuglien MG, Måge I, Knutsen SH, Ballance S, Rieder A, Rud I, Myhrstad MCW. A Three-Day Intervention With Granola Containing Cereal Beta-Glucan Improves Glycemic Response and Changes the Gut Microbiota in Healthy Individuals: A Crossover Study. Front Nutr 2022; 9:796362. [PMID: 35578615 PMCID: PMC9106798 DOI: 10.3389/fnut.2022.796362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 04/05/2022] [Indexed: 11/30/2022] Open
Abstract
Intake of soluble fibers including beta-glucan, is known to improve post-prandial glycemic response. The mechanisms have been attributed to the viscous gel forming in the stomach and small intestine, giving a longer absorption time. However, recent evidence suggests a link between intake of beta-glucan and improved glycemic regulation at subsequent meals through the gut microbiota. We investigated the short-term effect of granola with different amounts of cereal beta-glucan on glycemic response and gut microbiota. After a two-week run-in period (baseline), fourteen healthy, normal weight adults completed a dose-response dietary crossover study. Different amounts of cereal beta-glucan (low: 0.8 g, medium: 3.2 g and high: 6.6 g) were provided in granola and eaten with 200 ml low-fat milk as an evening meal for three consecutive days. Blood glucose and insulin were measured fasted and after an oral glucose tolerance test (OGTT) the following day, in addition to peptide YY (PYY) and glucagon-like peptide (GLP-2), fasting short chain fatty acids (SCFA) in blood, breath H2, and gut microbiota in feces. Only the intervention with medium amounts of beta-glucan decreased blood glucose and insulin during OGTT compared to baseline. Fasting PYY increased with both medium and high beta-glucan meal compared to the low beta-glucan meal. The microbiota and SCFAs changed after all three interventions compared to baseline, where acetate and butyrate increased, while propionate was unchanged. Highest positive effect size after intake of beta-glucan was found with Haemophilus, followed by Veillonella and Sutterella. Furthermore, we found several correlations between different bacterial taxa and markers of glycemic response. In summary, intake of granola containing 3.2 g cereal beta-glucan as an evening meal for three consecutive days reduced the glycemic response after an OGTT 0-180 min and changed gut microbiota composition. Since we cannot rule out that other fiber types have contributed to the effect, more studies are needed to further explore the effect of cereal beta-glucan on glycemic regulation. Clinical Trial Registration [www.clinicaltrials.gov], identifier [NCT03293693].
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Affiliation(s)
- Vibeke H. Telle-Hansen
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Line Gaundal
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Benedicte Høgvard
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Stine M. Ulven
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Kirsten B. Holven
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
- The Norwegian National Advisory Unit on Familial Hypercholesterolemia, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | | | - Ingrid Måge
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Svein Halvor Knutsen
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Simon Ballance
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Anne Rieder
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Ida Rud
- Nofima AS (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Mari C. W. Myhrstad
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
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15
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Lee DPS, Peng A, Taniasuri F, Tan D, Kim JE. Impact of fiber-fortified food consumption on anthropometric measurements and cardiometabolic outcomes: A systematic review, meta-analyses, and meta-regressions of randomized controlled trials. Crit Rev Food Sci Nutr 2022; 63:8301-8319. [PMID: 35333681 DOI: 10.1080/10408398.2022.2053658] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The consumption of processed and refined food lacking in fiber has led to global prevalence of obesity and cardiometabolic diseases. Fiber-fortification into these foods can yield potential health improvements to reduce disease risk. This meta-analyses aimed to evaluate how fiber-fortified food consumption changes body composition, blood pressure, blood lipid-lipoprotein panel, and glycemic-related markers. Searches were performed from 5 databases, with 31 randomized controlled trial eventually analyzed. Hedges' g values (95% confidence interval [CI]) attained from outcome change values were calculated using random-effects model. Fiber-fortified food significantly reduced body weight (-0.31 [-0.59, -0.03]), fat mass (-0.49 [-0.72, -0.26]), total cholesterol (-0.54 [-0.71, -0.36]), low-density lipoprotein cholesterol (-0.49 [-0.65, -0.33]), triglycerides (-0.24 [-0.36, -0.12]), fasting glucose (-0.30 [-0.49, -0.12]), and HbA1c (-0.44 [-0.74, -0.13]). Subgroup analysis differentiated soluble fiber as significantly reducing triglycerides and insulin while insoluble fiber significantly reduced body weight, BMI, and HbA1c. Greater outcome improvements were observed with solid/semi-solid food state than liquid state. Additionally, fiber fortification of <15 g/day induced more health outcome benefits compared to ≥15 g/day, although meta-regression found a dose-dependent improvement to waist circumference (p-value = 0.036). Findings from this study suggest that consuming food fortified with dietary fiber can improve anthropometric and cardiometabolic outcomes.Supplemental data for this article is available online at https://doi.org/10.1080/10408398.2022.2053658.
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Affiliation(s)
- Delia Pei Shan Lee
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Aiwei Peng
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Fransisca Taniasuri
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Denise Tan
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
- Science and Technology Department, Nestlé R&D Center (Pte) Ltd, Singapore, Singapore
| | - Jung Eun Kim
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
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16
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Physiological Effects of Bioactive Compounds Derived from Whole Grains on Cardiovascular and Metabolic Diseases. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12020658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Cardiovascular diseases are a global health burden with an increasing prevalence. In addition, various metabolic diseases, such as obesity, diabetes, and hypertension are associated with a higher risk of cardiovascular diseases. Dietary strategies based on healthy foods have been suggested for the prevention or improvement of cardiovascular and metabolic diseases. Grains are the most widely consumed food worldwide, and the preventive effects of whole grains (e.g., oats, barley, and buckwheat) on metabolic diseases have been reported. The germ and bran of grains are rich in compounds, including phytochemicals, vitamins, minerals, and dietary fiber, and these compounds are effective in preventing and improving cardiovascular and metabolic diseases. Thus, this review describes the characteristics and functions of bioactive ingredients in whole grains, focusing on mechanisms by which polyphenols, antioxidants, and dietary fiber contribute to cardiovascular and metabolic diseases, based on preclinical and clinical studies. There is clear evidence for the broad preventive and therapeutic effects of whole grains, supporting the value of early dietary intervention.
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Naber T, Purohit S. Chronic Kidney Disease: Role of Diet for a Reduction in the Severity of the Disease. Nutrients 2021; 13:3277. [PMID: 34579153 PMCID: PMC8467342 DOI: 10.3390/nu13093277] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 12/15/2022] Open
Abstract
Chronic kidney disease affects ~37 million adults in the US, and it is often undiagnosed due to a lack of apparent symptoms in early stages. Chronic kidney disease (CKD) interferes with the body's physiological and biological mechanisms, such as fluid electrolyte and pH balance, blood pressure regulation, excretion of toxins and waste, vitamin D metabolism, and hormonal regulation. Many CKD patients are at risk of hyperkalemia, hyperphosphatemia, chronic metabolic acidosis, bone deterioration, blood pressure abnormalities, and edema. These risks may be minimized, and the disease's progression may be slowed through careful monitoring of protein, phosphorus, potassium, sodium, and calcium, relieving symptoms experienced by CKD patients. In this review, the current Kidney Disease Outcomes Quality Initiative (KDOQI) recommendations are highlighted, reflecting the 2020 update, including explanations for the pathophysiology behind the recommendations. The Dietary Approaches to Stop Hypertension, the Mediterranean diet, and the whole foods plant-based diet are currently being examined for their potential role in delaying CKD progression. Biological explanations for why the whole foods plant-based diet may benefit CKD patients compared to diets that include animal products are examined. Strong evidence continues to support the importance of diet meeting the daily requirement in the prevention and progression of kidney disease, and medical nutrition therapy with a registered dietitian is a critical aspect in medical intervention for CKD.
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Affiliation(s)
- Tania Naber
- Department of Interdisciplinary Research, College of Allied Health Sciences, Augusta University, Augusta, GA 30912, USA;
| | - Sharad Purohit
- Department of Undergraduate Health Professionals, College of Allied Health Sciences, Augusta University, Augusta, GA 30912, USA
- Department of Gynecology and Obstetrics, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Center for Biotechnology and Genomic Medicine, Augusta University, Augusta, GA 30912, USA
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18
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Kim IS, Hwang CW, Yang WS, Kim CH. Multiple Antioxidative and Bioactive Molecules of Oats ( Avena sativa L.) in Human Health. Antioxidants (Basel) 2021; 10:antiox10091454. [PMID: 34573086 PMCID: PMC8471765 DOI: 10.3390/antiox10091454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 02/06/2023] Open
Abstract
Oats (Avena sativa L.) are rich in protein, fiber, calcium, vitamins (B, C, E, and K), amino acids, and antioxidants (beta-carotene, polyphenols, chlorophyll, and flavonoids). β-glucan and avenanthramides improve the immune system, eliminate harmful substances from the body, reduce blood cholesterol, and help with dietary weight loss by enhancing the lipid profile and breaking down fat in the body. β-glucan regulates insulin secretion, preventing diabetes. Progladins also lower cholesterol levels, suppress the accumulation of triglycerides, reduce blood sugar levels, suppress inflammation, and improve skin health. Saponin-based avanacosidase and functional substances of flavone glycoside improve the immune function, control inflammation, and prevent infiltration in the skin. Moreover, lignin and phytoestrogen prevent hormone-related cancer and improve the quality of life of postmenopausal women. Sprouted oats are rich in saponarin in detoxifying the liver. The literatures have been reviewed and the recent concepts and prospects have been summarized with figures and tables. This review discusses recent trends in research on the functionality of oats rather than their nutritional value with individual immunity for self-medication. The oat and its acting components have been revisited for the future prospect and development of human healthy and functional sources.
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Affiliation(s)
- Il-Sup Kim
- Advanced Bio-Resource Research Center, Kyungpook National University, Daegu 41566, Korea;
| | - Cher-Won Hwang
- Global Leadership School, Handong Global University, Pohang 37554, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Woong-Suk Yang
- Nodaji Co., Ltd., Pohang 37927, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Cheorl-Ho Kim
- Department of Biological Sciences, SungKyunKwan University, Suwon 16419, Gyunggi-Do, Korea
- Samsung Advanced Institute of Health Science and Technology (SAIHST), Sungkyunkwan University, Seoul 06351, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
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19
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Ms Wolever T, Rahn M, Dioum E, Spruill SE, Ezatagha A, Campbell JE, Jenkins AL, Chu Y. An Oat β-Glucan Beverage Reduces LDL Cholesterol and Cardiovascular Disease Risk in Men and Women with Borderline High Cholesterol: A Double-Blind, Randomized, Controlled Clinical Trial. J Nutr 2021; 151:2655-2666. [PMID: 34236436 DOI: 10.1093/jn/nxab154] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/16/2021] [Accepted: 04/28/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND High-molecular-weight (MW) oat β-glucan (OBG), consumed at 3-4 g/d, in solid foods reduces LDL cholesterol by a median of ∼6.5%. OBJECTIVES We evaluated the effect of a beverage providing 3 g/d high-MW OBG on reduction of LDL cholesterol (primary endpoint) when compared with placebo. METHODS We performed a parallel-design, randomized clinical trial at a contract research organization; participants, caregivers, and outcome assessors were blinded to treatment allocation. Participants with LDL cholesterol between 3.0 and 5.0 mmol/L, inclusive [n = 538 screened, n = 260 ineligible, n = 23 lost, n = 48 withdrawn (product safety); n = 207 randomly assigned, n = 7 dropped out, n = 9 withdrawn (protocol violation); n = 191 analyzed; n = 72 (37.7%) male, mean ± SD age: 43.3 ± 14.3 y, BMI: 29.7 ± 5.2 kg/m2], were randomly assigned to consume, 3 times daily for 4 wk, 1 g OBG (n = 104, n = 96 analyzed) or rice powder (Control, n = 103, n = 95 analyzed) mixed into 250 mL water. Treatment effects were assessed as change from baseline and differences analyzed using a 2-sided t test via ANOVA with baseline characteristics as covariates. RESULTS After 4 wk, change from baseline least-squares-mean LDL cholesterol on OBG (-0.195 mmol/L) was less than on Control (0.012 mmol/L) by mean: 0.207 mmol/L (95% CI: 0.318, 0.096 mmol/L; P = 0.0003); the following secondary endpoints were also reduced as follows: total cholesterol (TC) (0.226 mmol/L; 95% CI: 0.361, 0.091 mmol/L; P = 0.001), TC:HDL cholesterol ratio (0.147; 95% CI: 0.284, 0.010; P = 0.036), non-HDL cholesterol (0.194 mmol/L; 95% CI: 0.314, 0.073 mmol/L; P = 0.002), and Framingham cardiovascular disease (CVD) risk (0.474; 95% CI: 0.900, 0.049, P = 0.029). Changes in HDL cholesterol, triglycerides, glucose, and insulin did not differ between treatment groups (P > 0.05). Lipid treatment effects were not significantly modified by age, sex, BMI, or hypertension treatment. There were no major adverse events, but both treatments transiently increased gastrointestinal symptoms. CONCLUSIONS Consuming a beverage containing 1 g high-MW OBG 3 times daily for 4 wk significantly reduced LDL cholesterol by ∼6% and CVD risk by ∼8% in healthy adults with LDL cholesterol between 3 and 5 mmol/L.This trial was registered at clinicaltrials.gov as NCT03911427.
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Affiliation(s)
- Thomas Ms Wolever
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, Ontario, Canada
| | - Maike Rahn
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL, USA
| | - ElHadji Dioum
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL, USA
| | | | - Adish Ezatagha
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, Ontario, Canada
| | - Janice E Campbell
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, Ontario, Canada
| | | | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL, USA
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20
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Edible Mushrooms and Beta-Glucans: Impact on Human Health. Nutrients 2021; 13:nu13072195. [PMID: 34202377 PMCID: PMC8308413 DOI: 10.3390/nu13072195] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/16/2021] [Accepted: 06/22/2021] [Indexed: 12/19/2022] Open
Abstract
Mushroom cell walls are rich in β-glucans, long or short-chain polymers of glucose subunits with β-1,3 and β-1,6 linkages, that are responsible for the linear and branching structures, respectively. β-glucans from cereals, at variance, have no 1,6 linkages nor branching structures. Both immunomodulatory and anti-inflammatory effects of mushrooms have been described using purified β-glucans or fungi extracts on cellular and experimental models; their potential clinical use has been tested in different conditions, such as recurrent infections of the respiratory tract or complications of major surgery. Another promising application of β-glucans is on cancer, as adjuvant of conventional chemotherapy. β-glucans may protect the cardiovascular system, ameliorating glucose, lipid metabolism, and blood pressure: these activities, observed for oat and barley β-glucans, require confirmation in human studies with mushroom β-glucans. On the other hand, mushrooms may also protect the cardiovascular system via a number of other components, such as bioactive phenolic compounds, vitamins, and mineral elements. The growing knowledge on the mechanism(s) and health benefits of mushrooms is encouraging the development of a potential clinical use of β-glucans, and also to further document their role in preserving health and prevent disease in the context of healthy lifestyles.
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21
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Guo H, Wu H, Sajid A, Li Z. Whole grain cereals: the potential roles of functional components in human health. Crit Rev Food Sci Nutr 2021; 62:8388-8402. [PMID: 34014123 DOI: 10.1080/10408398.2021.1928596] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Whole grain cereals have been the basis of human diet since ancient times. Due to rich in a variety of unique bioactive ingredients, they play an important role in human health. This review highlights the contents and distribution of primary functional components and their health effects in commonly consumed whole grain cereals, especially dietary fiber, protein, polyphenols, and alkaloids. In general, cereals exert positive effects in the following ways: 1) Restoring intestinal flora diversity and increasing intestinal short-chain fatty acids. 2) Regulating plasma glucose and lipid metabolism, thereby the improvement of obesity, cardiovascular and cerebrovascular diseases, diabetes, and other chronic metabolic diseases. 3) Exhibiting antioxidant activity by scavenging free radicals. 4) Preventing gastrointestinal cancer via the regulation of classical signaling pathways. In summary, this review provides a scientific basis for the formulation of whole-grain cereals-related dietary guidelines, and guides people to form scientific dietary habits, so as to promote the development and utilization of whole-grain cereals.
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Affiliation(s)
- Huiqin Guo
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, PR China
| | - Haili Wu
- College of Life Science, Shanxi University, Taiyuan, PR China
| | - Amin Sajid
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, PR China
| | - Zhuoyu Li
- Institute of Biotechnology, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, PR China;,College of Life Science, Shanxi University, Taiyuan, PR China
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22
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Cronin P, Joyce SA, O’Toole PW, O’Connor EM. Dietary Fibre Modulates the Gut Microbiota. Nutrients 2021; 13:nu13051655. [PMID: 34068353 PMCID: PMC8153313 DOI: 10.3390/nu13051655] [Citation(s) in RCA: 215] [Impact Index Per Article: 71.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 12/14/2022] Open
Abstract
Dietary fibre has long been established as a nutritionally important, health-promoting food ingredient. Modern dietary practices have seen a significant reduction in fibre consumption compared with ancestral habits. This is related to the emergence of low-fibre “Western diets” associated with industrialised nations, and is linked to an increased prevalence of gut diseases such as inflammatory bowel disease, obesity, type II diabetes mellitus and metabolic syndrome. The characteristic metabolic parameters of these individuals include insulin resistance, high fasting and postprandial glucose, as well as high plasma cholesterol, low-density lipoprotein (LDL) and high-density lipoprotein (HDL). Gut microbial signatures are also altered significantly in these cohorts, suggesting a causative link between diet, microbes and disease. Dietary fibre consumption has been hypothesised to reverse these changes through microbial fermentation and the subsequent production of short-chain fatty acids (SCFA), which improves glucose and lipid parameters in individuals who harbour diseases associated with dysfunctional metabolism. This review article examines how different types of dietary fibre can differentially alter glucose and lipid metabolism through changes in gut microbiota composition and function.
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Affiliation(s)
- Peter Cronin
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland;
- APC Microbiome Ireland, University College Cork, T12 K8AF Cork, Ireland; (S.A.J.); (P.W.O.)
| | - Susan A. Joyce
- APC Microbiome Ireland, University College Cork, T12 K8AF Cork, Ireland; (S.A.J.); (P.W.O.)
- School of Biochemistry and Cell Biology, University College Cork, T12 K8AF Cork, Ireland
| | - Paul W. O’Toole
- APC Microbiome Ireland, University College Cork, T12 K8AF Cork, Ireland; (S.A.J.); (P.W.O.)
- Department of Microbiology, University College Cork, T12 K8AF Cork, Ireland
| | - Eibhlís M. O’Connor
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland;
- APC Microbiome Ireland, University College Cork, T12 K8AF Cork, Ireland; (S.A.J.); (P.W.O.)
- Health Research Institute, University of Limerick, V94 T9PX Limerick, Ireland
- Correspondence:
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23
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Barčauskaitė K, Mažeika R. Chemical composition and risk assessment of spring barley grown in artificially contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:21684-21695. [PMID: 33411288 DOI: 10.1007/s11356-020-12074-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
A model contaminated system was developed to determine mechanisms of napthalene bioaccumulation and effect on the mineral composition of spring barley grain and straw grown in the Calcari-Endohypogleyic Luvisol. The soil was mixed with green waste compost and spiked with naphthalene which concentration varied from 0 to 500 ppm. Obtained results indicate that naphthalene additive at the concentration rate from 100 to 500 ppm reduced spring barley germination. The significant lower weight of green mass per pot, one plant weight and mass of 1000 grains were observed in the amendment with the highest naphthalene concentration (500 ppm). It was determined the daily intake (ED) of 16PAHs via spring barley grain and incremental lifetime cancer risks (ILCR). Estimated ED and ILCR of 16PAHs via spring barley ranged from 1.00 to 3.78 ng day-1 and 3.79 to 14.3 × 10-5 respectively. It should be noted that obtained results are higher around 10 times compared to previous studies performed using wheat grain. This study presents the mechanisms of naphthalene bioaccumulation and effect on the mineral composition of the most common agricultural plant spring barley grain and straw. Spring barley grain was found to have a higher content of nitrogen (N), boron (B) and phosphorous (P), whereas straw had a higher content of potassium (K), sodium (Na), chromium (Cr) and calcium (Ca).
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Affiliation(s)
- Karolina Barčauskaitė
- Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture Instituto al. 1, Akademija, LT-58344, Kėdainiai distr., Lithuania.
| | - Romas Mažeika
- Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture Instituto al. 1, Akademija, LT-58344, Kėdainiai distr., Lithuania
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24
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Malunga LN, Ames N, Zhouyao H, Blewett H, Thandapilly SJ. Beta-Glucan From Barley Attenuates Post-prandial Glycemic Response by Inhibiting the Activities of Glucose Transporters but Not Intestinal Brush Border Enzymes and Amylolysis of Starch. Front Nutr 2021; 8:628571. [PMID: 33937305 PMCID: PMC8085267 DOI: 10.3389/fnut.2021.628571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Beta (β)-glucan (BG) from cereal grains is associated with lowering post-prandial blood glucose but the precise mechanism is not well-elucidated. The main aim of this study was to understand the mechanism through which BG from barley affects post-prandial glycemic response. Waffles containing 0, 1, 2, and 3 g barley BG and the same amount of available carbohydrate (15 g) were fed to the TIM-1 dynamic gastrointestinal digestion system to study the effect of BG on starch hydrolysis. Intestinal acetone powder and Xenopus laevis oocytes were used to study BG's effect on mammalian intestinal α-glucosidase and glucose transporters. The presence of BG did not significantly affect the in vitro starch digestion profiles of waffles suggesting that BG does not affect α-amylase activity. Intestinal α-glucosidase and glucose transport activities were significantly (p < 0.0001) inhibited in the presence of barley BG. Interestingly, BG viscosity did not influence α-amylase, α-glucosidase, GLUT2, and SGLT1 activities. This study provides the first evidence for the mechanism by which BG from barley attenuates post-prandial glycemic response is via alteration of α-glucosidase, GLUT2, and SGLT1 activity, but not amylolysis of starch. The decrease in post-prandial blood glucose in the presence of BG is likely a consequence of the interaction between BG and membrane active proteins (brush border enzymes and glucose transporters) as opposed to the commonly held hypothesis that increased viscosity caused by BG inhibits starch digestion.
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Affiliation(s)
- Lovemore Nkhata Malunga
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, 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
| | - Nancy Ames
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, 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
| | - Haonan Zhouyao
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Heather Blewett
- 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.,Canadian Centre for Agri-Food Research in Health and Medicine (CCARM), St Boniface Hospital Research Centre, Winnipeg, MB, Canada
| | - Sijo Joseph Thandapilly
- Richardson Center for Functional Foods and Nutraceuticals, Agriculture and Agri-Food Canada, 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
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25
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Muthuramalingam K, Kim Y, Cho M. β-glucan, "the knight of health sector": critical insights on physiochemical heterogeneities, action mechanisms and health implications. Crit Rev Food Sci Nutr 2021; 62:6908-6931. [PMID: 33819119 DOI: 10.1080/10408398.2021.1908221] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
β-glucans, the class of biological response modifier has unceasing attention, not only for its immune stimulating but also for its role as prebiotics, modulator of physiological events etc. and is widely used in the treatment of cancer, diabetes, gastrointestinal disorders, cardiovascular diseases etc. However, β-glucan with different physiochemical properties is found to have discrete clinical functions and thus careful selection of the types of β-glucan plays pivotal role in providing significant and expected clinical outcome. Herein this review, we presented the factors responsible for diverse functional properties of β-glucan, their distinct mode of actions in regulating human health etc. Further, clinical aspects of different β-glucans toward the management of wound care, metabolic dysbiosis, fatty liver disorders and endurance training associated energy metabolism were compiled and exhibited in detail.
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Affiliation(s)
- Karthika Muthuramalingam
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - Youngmee Kim
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - Moonjae Cho
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju, Republic of Korea.,Institute of Medical Science, Jeju National University, Jeju, Republic of Korea.,Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju, Republic of Korea
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26
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Kim YH, Kang MS, Kim TH, Jeong Y, Ahn JO, Choi JH, Chung JY. Anti-Inflammatory and Immune Modulatory Effects of Synbio-Glucan in an Atopic Dermatitis Mouse Model. Nutrients 2021; 13:nu13041090. [PMID: 33810608 PMCID: PMC8067118 DOI: 10.3390/nu13041090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 12/14/2022] Open
Abstract
Many trials have been conducted to treat atopic dermatitis (AD), but these therapies are generally unsuccessful because of their insufficiency or side effects. This study examined the efficacy of β-glucan derived from oats with fermented probiotics (called Synbio-glucan) on an AD-induced mouse model. For the experiment, Nc/Nga mice were exposed to a house dust mite extract (HDM) to induce AD. The mice were placed in one of four groups: positive control group, Synbio-glucan topical treatment group, Synbio-glucan dietary treatment group, and Synbio-glucan topical + dietary treatment group. The experiment revealed no significant difference in the serum IgE concentration among the groups. Serum cytokine antibody arrays showed that genes related to the immune response were enriched. A significant difference in the skin lesion scores was observed between the groups. Compared to the control group tissue, skin lesions were alleviated in the Synbio-glucan topical treatment group and Synbio-glucan dietary treatment group. Interestingly, almost normal structures were observed within the skin lesions in the Synbio-glucan topical + dietary treatment group. Overall, the β-glucan extracted from oats and fermented probiotic mixture is effective in treating atopic dermatitis.
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Affiliation(s)
- Yoon-Hwan Kim
- Department of Veterinary Internal Medicine and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (Y.-H.K.); (Y.J.); (J.-O.A.)
| | - Min Soo Kang
- Department of Veterinary Anatomy and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (M.S.K.); (T.H.K.)
| | - Tae Hyeong Kim
- Department of Veterinary Anatomy and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (M.S.K.); (T.H.K.)
| | - Yunho Jeong
- Department of Veterinary Internal Medicine and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (Y.-H.K.); (Y.J.); (J.-O.A.)
| | - Jin-Ok Ahn
- Department of Veterinary Internal Medicine and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (Y.-H.K.); (Y.J.); (J.-O.A.)
| | - Jung Hoon Choi
- Department of Veterinary Anatomy and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (M.S.K.); (T.H.K.)
- Correspondence: (J.H.C.); (J.-Y.C.); Tel.: +82-33-250-8682 (J.H.C.); +82-33-250-8656 (J.-Y.C.)
| | - Jin-Young Chung
- Department of Veterinary Internal Medicine and Institute of Veterinary Science, College of Veterinary Medicine, Kangwon National University, Chuncheon-si 24341, Korea; (Y.-H.K.); (Y.J.); (J.-O.A.)
- Correspondence: (J.H.C.); (J.-Y.C.); Tel.: +82-33-250-8682 (J.H.C.); +82-33-250-8656 (J.-Y.C.)
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27
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Mathews R, Kamil A, Chu Y. Global review of heart health claims for oat beta-glucan products. Nutr Rev 2021; 78:78-97. [PMID: 32728751 DOI: 10.1093/nutrit/nuz069] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Coronary heart disease (CHD) is the leading cause of death globally. Consumption of whole grains and cereal fiber, as part of a healthy diet, can lower the risk of CHD. Health claims on food products are effective in helping consumers select healthful diets. The US Food and Drug Administration was the first to approve a health claim, in 1997, between beta-glucan soluble fiber from whole oats, oat bran, and whole oat flour and reduced risk of CHD. Only a few countries have approved similar claims. Since 1997, a significant amount of additional evidence has been published on the relationship between oat beta-glucan and CHD. To assist other jurisdictions in potentially utilizing this claim, the full extent of data that supports this claim (ie, the evidence utilized by the US Food and Drug Administration to substantiate the claim, as well as the results of 49 clinical trials published since 1997) are reviewed here. The complexities involved in authoring evidence-based health claims, including the impact of processing on beta-glucan cholesterol-lowering efficacy in approving eligible beta-glucan products, are also discussed.
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28
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Schmidt M. Cereal beta-glucans: an underutilized health endorsing food ingredient. Crit Rev Food Sci Nutr 2020; 62:3281-3300. [DOI: 10.1080/10408398.2020.1864619] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marcus Schmidt
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Detmold, Germany
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29
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Murphy EJ, Rezoagli E, Major I, Rowan NJ, Laffey JG. β-Glucan Metabolic and Immunomodulatory Properties and Potential for Clinical Application. J Fungi (Basel) 2020; 6:E356. [PMID: 33322069 PMCID: PMC7770584 DOI: 10.3390/jof6040356] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/21/2022] Open
Abstract
β-glucans are complex polysaccharides that are found in several plants and foods, including mushrooms. β-glucans display an array of potentially therapeutic properties. β-glucans have metabolic and gastro-intestinal effects, modulating the gut microbiome, altering lipid and glucose metabolism, reducing cholesterol, leading to their investigation as potential therapies for metabolic syndrome, obesity and diet regulation, gastrointestinal conditions such as irritable bowel, and to reduce cardiovascular and diabetes risk. β-glucans also have immune-modulating effects, leading to their investigation as adjuvant agents for cancers (solid and haematological malignancies), for immune-mediated conditions (e.g., allergic rhinitis, respiratory infections), and to enhance wound healing. The therapeutic potential of β-glucans is evidenced by the fact that two glucan isolates were licensed as drugs in Japan as immune-adjuvant therapy for cancer in 1980. Significant challenges exist to further clinical testing and translation of β-glucans. The diverse range of conditions for which β-glucans are in clinical testing underlines the incomplete understanding of the diverse mechanisms of action of β-glucans, a key knowledge gap. Furthermore, important differences appear to exist in the effects of apparently similar β-glucan preparations, which may be due to differences in sources and extraction procedures, another poorly understood issue. This review will describe the biology, potential mechanisms of action and key therapeutic targets being investigated in clinical trials of β-glucans and identify and discuss the key challenges to successful translation of this intriguing potential therapeutic.
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Affiliation(s)
- Emma J. Murphy
- Bioscience Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (E.J.M.); (E.R.); (N.J.R.)
| | - Emanuele Rezoagli
- Bioscience Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (E.J.M.); (E.R.); (N.J.R.)
- Lung Biology Group, Regenerative Medicine Institute at CURAM Centre for Medical Devices, School of Medicine, National University of Ireland Galway, H91 CF50 Galway, Ireland
- Anaesthesia and Intensive Care Medicine, University Hospital Galway, H91 YR71 Galway, Ireland
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
| | - Ian Major
- Materials Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland;
| | - Neil J. Rowan
- Bioscience Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (E.J.M.); (E.R.); (N.J.R.)
| | - John G. Laffey
- Lung Biology Group, Regenerative Medicine Institute at CURAM Centre for Medical Devices, School of Medicine, National University of Ireland Galway, H91 CF50 Galway, Ireland
- Anaesthesia and Intensive Care Medicine, University Hospital Galway, H91 YR71 Galway, Ireland
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30
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Wolever TMS, Mattila O, Rosa-Sibakov N, Tosh SM, Jenkins AL, Ezatagha A, Duss R, Steinert RE. Effect of Varying Molecular Weight of Oat β-Glucan Taken just before Eating on Postprandial Glycemic Response in Healthy Humans. Nutrients 2020; 12:nu12082275. [PMID: 32751269 PMCID: PMC7469033 DOI: 10.3390/nu12082275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 11/16/2022] Open
Abstract
To see if the molecular weight (MW) and viscosity of oat β-glucan (OBG) when taken before eating determine its effect on postprandial glycemic responses (PPRG), healthy overnight-fasted subjects (n = 16) were studied on eight separate occasions. Subjects consumed 200 mL water alone (Control) or with 4 g OBG varying in MW and viscosity followed, 2-3 min later, by 113 g white-bread. Blood was taken fasting and at 15, 30, 45, 60, 90, and 120 min after starting to eat. None of the OBG treatments differed significantly from the Control for the a-priori primary endpoint of glucose peak-rise or secondary endpoint of incremental area-under-the-curve (iAUC) over 0-120 min. However, significant differences from the Control were seen for glucose iAUC over 0-45 min and time to peak (TTP) glucose. Lower log(MW) and log(viscosity) were associated with higher iAUC 0-45 (p < 0.001) and shorter TTP (p < 0.001). We conclude that when 4 g OBG is taken as a preload, reducing MW does not affect glucose peak rise or iAUC0-120, but rather accelerates the rise in blood glucose and reduces the time it takes glucose to reach the peak. However, this is based on post-hoc calculation of iAUC0-45 and TTP and needs to be confirmed in a subsequent study.
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Affiliation(s)
- Thomas M. S. Wolever
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, ON M5C 2N8, Canada; (T.M.S.W.); (A.L.J.); (A.E.)
| | - Outi Mattila
- VTT Technical Research Centre of Finland Ltd., 1000 Espoo, Finland; (O.M.); (N.R.-S.)
| | - Natalia Rosa-Sibakov
- VTT Technical Research Centre of Finland Ltd., 1000 Espoo, Finland; (O.M.); (N.R.-S.)
| | - Susan M. Tosh
- School of Nutrition Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada;
| | - Alexandra L. Jenkins
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, ON M5C 2N8, Canada; (T.M.S.W.); (A.L.J.); (A.E.)
| | - Adish Ezatagha
- INQUIS Clinical Research, Ltd. (formerly GI Labs), Toronto, ON M5C 2N8, Canada; (T.M.S.W.); (A.L.J.); (A.E.)
| | - Ruedi Duss
- DSM Nutritional Products Ltd., R&D Human Nutrition and Health, 4002 Basel, Switzerland;
| | - Robert E. Steinert
- DSM Nutritional Products Ltd., R&D Human Nutrition and Health, 4002 Basel, Switzerland;
- Department of Surgery, Division of Visceral and Transplantation Surgery, University Hospital Zürich, 8091 Zürich, Switzerland
- Correspondence:
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31
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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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32
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Ameliorating Chronic Kidney Disease Using a Whole Food Plant-Based Diet. Nutrients 2020; 12:nu12041007. [PMID: 32268544 PMCID: PMC7230354 DOI: 10.3390/nu12041007] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 12/18/2022] Open
Abstract
Novel approaches to ameliorating chronic kidney disease (CKD) are warranted as most patients are undiagnosed until they begin displaying symptoms of kidney failure. There is increasing evidence that a whole food plant-based (WFPB) diet may offer benefits that slow the progression of CKD, decrease the incidence cardiovascular disease, decrease rates of diabetes and obesity, and reduce inflammation and cholesterol, which in turn can delay kidney failure and the initiation of dialysis. While animal-based protein ingestion promotes an acidic environment, inflammation and renal hyperfiltration, study authors report plant-based protein can be alkaline-producing and anti-inflammatory and can contain renoprotective properties. Although there may be benefits to adopting a WFPB diet, macronutrient and micronutrient content should be carefully considered and adjusted to avoid malnutrition in CKD patients. Further research needs to be done in order to establish the biological plausibility and feasibility of a WFPB in individuals with diagnosed CKD.
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33
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Jovanovski E, Mazhar N, Komishon A, Khayyat R, Li D, Blanco Mejia S, Khan T, L Jenkins A, Smircic-Duvnjak L, L Sievenpiper J, Vuksan V. Can dietary viscous fiber affect body weight independently of an energy-restrictive diet? A systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr 2020; 111:471-485. [PMID: 31897475 DOI: 10.1093/ajcn/nqz292] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/30/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The role of dietary fiber in obesity management remains debatable. Evidence suggests that intake of viscous fiber may have the potential to facilitate weight loss. OBJECTIVE We aimed to summarize and quantify the effects of viscous fiber on body weight, BMI, waist circumference, and body fat, independent of calorie restriction, through a systematic review and meta-analysis of randomized controlled trials. METHODS Trials ≥4 wk in duration that assessed the effect of viscous fiber supplemented to an ad libitum diet along with comparator diets were included. MEDLINE, EMBASE, and the Cochrane library were searched through 24 July, 2019. Two independent reviewers extracted relevant data. Data were pooled using the generic inverse variance method and random-effects models and expressed as mean differences with 95% CIs. Interstudy heterogeneity was assessed (Cochran Q statistic) and quantified (I2 statistic). The overall certainty of evidence was explored using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach. RESULTS Findings from 62 trials (n = 3877) showed that viscous fiber reduced mean body weight (-0.33 kg; 95% CI: -0.51, -0.14 kg; P = 0.004), BMI (in kg/m2) (-0.28; 95% CI: -0.42, -0.14; P = 0.0001), and waist circumference (-0.63 cm; 95% CI: -1.11, -0.16 cm; P = 0.008), with no change in body fat (-0.78%; 95% CI: -1.56%, 0.00%; P = 0.05) when consumed with an ad libitum diet. Greater reductions in body weight were observed in overweight individuals and those with diabetes and metabolic syndrome. The certainty of evidence was graded moderate for body weight, high for waist circumference and body fat, and low for BMI. CONCLUSIONS Dietary viscous fiber modestly yet significantly improved body weight and other parameters of adiposity independently of calorie restriction. Future trials are warranted to address the inconsistency and imprecision identified through GRADE and to determine long-term weight-loss sustainability.This systematic review and meta-analysis was registered at clinicaltrials.gov as NCT03257449.
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Affiliation(s)
- Elena Jovanovski
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Nourah Mazhar
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Allison Komishon
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Rana Khayyat
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Dandan Li
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Sonia Blanco Mejia
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Toronto 3D Knowledge Synthesis & Clinical Trials Unit, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Tauseef Khan
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Toronto 3D Knowledge Synthesis & Clinical Trials Unit, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Alexandra L Jenkins
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada
| | | | - John L Sievenpiper
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Toronto 3D Knowledge Synthesis & Clinical Trials Unit, St. Michael's Hospital, Toronto, Ontario, Canada.,Division of Endocrinology and Metabolism, Department of Medicine, St Michael's Hospital, Toronto, Ontario, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Vladimir Vuksan
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Division of Endocrinology and Metabolism, Department of Medicine, St Michael's Hospital, Toronto, Ontario, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
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Ferguson JJA, Stojanovski E, MacDonald-Wicks L, Garg ML. High molecular weight oat β-glucan enhances lipid-lowering effects of phytosterols. A randomised controlled trial. Clin Nutr 2020; 39:80-89. [DOI: 10.1016/j.clnu.2019.02.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/12/2018] [Accepted: 02/04/2019] [Indexed: 01/03/2023]
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35
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Rosa-Sibakov N, Mäkelä N, Aura AM, Sontag-Strohm T, Nordlund E. In vitro study for investigating the impact of decreasing the molecular weight of oat bran dietary fibre components on the behaviour in small and large intestine. Food Funct 2020; 11:6680-6691. [DOI: 10.1039/d0fo00367k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The objective of this work was to evaluate the role of β-glucan molecular weight (Mw) and the presence of other carbohydrates on the physiological functionality of oat bran via an in vitro digestion study.
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Affiliation(s)
| | - Noora Mäkelä
- Department of Food and Nutrition
- University of Helsinki
- Finland
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Henrion M, Francey C, Lê KA, Lamothe L. Cereal B-Glucans: The Impact of Processing and How It Affects Physiological Responses. Nutrients 2019; 11:E1729. [PMID: 31357461 PMCID: PMC6722849 DOI: 10.3390/nu11081729] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/19/2019] [Accepted: 07/24/2019] [Indexed: 12/29/2022] Open
Abstract
Cereal β-glucans are dietary fibres primarily found in oats and barley, and have several positive effects on health, including lowering the postprandial glucose response and the improvement of blood cholesterol levels. Cereal β-glucans have a specific combination of β-(1→4) and β-(1→3) linkages into linear long-chain polysaccharides of high molecular weight. Due to their particular structure, cereal β-glucans generate viscosity within the intestinal tract, which is thought to be the main mechanism of action responsible for their positive health effects. However, cereal grains are rarely consumed raw; at least one cooking step is generally required before they can be safely eaten. Cooking and processing methods more generally will modify the physicochemical characteristics of β-glucans, such as molecular weight, extractability and the resulting viscosity. Therefore, the health impact of β-glucans will depend not only on the dose administered, but also on the ways they are processed or converted into food products. This review aims at summarizing the different parameters that can affect β-glucans efficacy to improve glucose and lipid metabolism in humans.
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Affiliation(s)
- Muriel Henrion
- Science & Technology Dairy, Nestle Research & Development Orbe, Route de Chavornay 3, CH-1350 Orbe, Switzerland
| | - Célia Francey
- Institute of Health Sciences, Nestlé Research, Route du Jorat 57, CH-1000 Lausanne, Switzerland
| | - Kim-Anne Lê
- Institute of Health Sciences, Nestlé Research, Route du Jorat 57, CH-1000 Lausanne, Switzerland
| | - Lisa Lamothe
- Institute of Materials Science, Nestlé Research, Route du Jorat 57, CH-1000 Lausanne, Switzerland.
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Addition of oat bran reduces HDL-C and does not potentialize effect of a low-calorie diet on remission of metabolic syndrome: A pragmatic, randomized, controlled, open-label nutritional trial. Nutrition 2019; 65:126-130. [PMID: 31082790 DOI: 10.1016/j.nut.2019.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 02/06/2019] [Accepted: 03/20/2019] [Indexed: 01/03/2023]
Abstract
OBJECTIVES It is unclear whether addition of soluble fiber to a low-calorie diet potentializes weight loss and amelioration of metabolic syndrome (MetS). The aim of this study was to analyze the effects of oat bran on prevalence of MetS and associated disorders. METHODS A pragmatic, randomized controlled, 6-wk nutritional trial was carried out with 154 outpatients (mean age 47.6 ± 12.6 y of age). The intervention group (n = 83) received a low-calorie diet plus 40 g/d of oat bran; the control group (n = 71) received a low-calorie diet only. MetS parameters and prevalence were calculated and compared (using two-tailed statistical tests) before and after follow-up. RESULTS After follow-up, a significant but similar reduction was observed in MetS prevalence (40% reduction, 63% and 64.8% prevalence in intervention and control groups, respectively; P = 0.226), body mass index, body weight, waist circumference, systolic and diastolic blood pressures, triacylglycerides, and blood glucose levels in both groups (P < 0.05). Mean high-density lipoprotein cholesterol (HDL-C) was reduced in the intervention group (43.6 ± 9.6 to 41.2 ± 9.5 mg/dL; P = 0.025), but not in the control group (44.6 ± 10.5 to 44.5 ± 12.1 mg/dL; P = 0.890). There was no significant difference in any of the variables between the groups, although the P-value for HDL-C was almost significant (P = 0.078). Calorie and dietetic fiber intake during the 6-wk period were similar in both groups. CONCLUSIONS Daily consumption of oat bran did not potentialize the beneficial effects of a traditional low-calorie diet on the prevalence of MetS and associated disorders. Additionally, it reduced HDL-C.
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38
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Impact of oat processing on glycaemic and insulinaemic responses in healthy humans: a randomised clinical trial. Br J Nutr 2019; 121:1264-1270. [PMID: 31068229 DOI: 10.1017/s0007114519000370] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Oats can be processed in a variety of ways ranging from minimally processed such as steel-cut oats (SCO), to mildly processed such as large-flake oats (old fashioned oats, OFO), moderately processed such as instant oats (IO) or highly processed in ready-to-eat oat cereals such as Honey Nut Cheerios (HNC). Although processing is believed to increase glycaemic and insulinaemic responses, the effect of oat processing in these respects is unclear. Thus, we compared the glycaemic and insulinaemic responses elicited by 628 kJ portions of SCO, OFO, IO and HNC and a portion of Cream of Rice cereal (CR) containing the same amount of available-carbohydrate (23 g) as the oatmeals. Healthy males (n 18) and females (n 12) completed this randomised, cross-over trial. Blood was taken fasting and at intervals for 3 h following test-meal consumption. Glucose and insulin peak-rises and incremental AUC (iAUC) were subjected to repeated-measures ANOVA using Tukey's test (two-sided P<0·05) to compare individual means. Glucose peak-rise (primary endpoint, mean (sem) mmol/l) after OFO, 2·19 (sem 0·11), was significantly less than after CR, 2·61 (sem 0·13); and glucose peak-rise after SCO, 1·93 (sem 0·13), was significantly less than after CR, HNC, 2·49 (sem 0·13) and IO 2·47 (sem 0·13). Glucose iAUC was significantly lower after SCO than CR and HNC. Insulin peak rise was similar among the test meals, but insulin iAUC was significantly less after SCO than IO. Thus, the results show that oat processing affects glycaemic and insulinaemic responses with lower responses associated with less processing.
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Abstract
Some food bioactives potentially exert anti-obesity effects. Anthocyanins (ACN), catechins, β-glucan (BG) and n-3 long chain PUFA (LCPUFA) are among the most promising candidates and have been considered as a strategy for the development of functional foods counteracting body weight gain. At present, clinical trials, reviews and meta-analyses addressing anti-obesity effects of various bioactives or bioactive-rich foods show contradictory results. Abdominal obesity is an important criterion for metabolic syndrome (MetS) diagnosis along with glucose intolerance, dyslipidaemia and hypertension. Food bioactives are supposed to exert beneficial effects on these parameters, therefore representing alternative therapy approaches for the treatment of MetS. This review summarises outcomes on MetS biomarkers in recent clinical trials supplementing ACN, catechins, BG and n-3 LCPUFA, focusing mainly on anti-obesity effects. Overall, it is clear that the level of evidence for the effectiveness varies not only among the different bioactives but also among the different putative health benefits suggested for the same bioactive. Limited evidence may be due to the low number of controlled intervention trials or to inconsistencies in trial design, i.e. duration, dose and/or the method of bioactive supplementation (extracts, supplements, rich or enriched food). At present, the question 'Are bioactives effective in weight management and prevention of metabolic syndrome?' remains inconclusive. Thus, a common effort to harmonise the study design of intervention trials focusing on the most promising bioactive molecules is urgently needed to strengthen the evidence of their potential in the treatment of obesity, MetS and related diseases.
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40
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Valoppi F, Maina N, Allén M, Miglioli R, Kilpeläinen PO, Mikkonen KS. Spruce galactoglucomannan-stabilized emulsions as essential fatty acid delivery systems for functionalized drinkable yogurt and oat-based beverage. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-019-03273-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Yang R, Wang C, Ye H, Gao F, Cheng J, Zhang T, Guo M. Effects of feeding hyperlipidemia rats with symbiotic oat-based frozen yogurt on serum triglycerides and cholesterol. Food Sci Nutr 2019; 7:1096-1103. [PMID: 30918652 PMCID: PMC6418695 DOI: 10.1002/fsn3.949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/31/2018] [Accepted: 01/08/2019] [Indexed: 11/25/2022] Open
Abstract
Ice cream is one of the most popular dairy foods in the world. But it has long been recognized as a high-calorie food and may not be suitable for certain segments of the population. Oat-based food products are considered as functional foods due to its rich β-glucan. A symbiotic oat-based frozen yogurt (SOFY) containing fermented oat, probiotics, and inulin (prebiotic) was developed, and its effects on serum lipids in rats were evaluated. The new product had 4.10% protein, 8.50% fat, and 2.10% fiber, respectively. Bifidobacterium remained 106 CFU/ml up to 8 weeks. Triglycerides levels of the rats fed with 30% or 35% SOFY were significantly lower than that of the control group (p < 0.05). Serum total cholesterol and low-density lipoprotein levels of experimental rat groups decreased with increased SOFY, and the difference was very significant between group with 35% SOFY and control groups (p < 0.01). There was no significant difference in high-density lipoprotein between each two groups (p > 0.05). Hepatic cell cords of rats after administration of SOFY showed orderly manner and normal hepatocyte morphology compared with those of rats in control group. Results indicated that consumption of oat-based frozen yogurt could lower serum lipids levels in rats.
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Affiliation(s)
- Ruishu Yang
- College of Food ScienceNortheast Agricultural UniversityHarbinChina
| | - Cuina Wang
- Department of Food ScienceCollege of Food Science and EngineeringJilin UniversityChangchunChina
| | - Haiqing Ye
- Department of Food ScienceCollege of Food Science and EngineeringJilin UniversityChangchunChina
| | - Feng Gao
- Department of Food ScienceCollege of Food Science and EngineeringJilin UniversityChangchunChina
| | - Jianjun Cheng
- College of Food ScienceNortheast Agricultural UniversityHarbinChina
| | - Tiehua Zhang
- Department of Food ScienceCollege of Food Science and EngineeringJilin UniversityChangchunChina
| | - Mingruo Guo
- College of Food ScienceNortheast Agricultural UniversityHarbinChina
- Department of Nutrition and Food SciencesCollege of Agriculture and Life SciencesThe University of VermontBurlingtonVermont
- Key Lab of Dairy ScienceMinistry of EducationHarbinChina
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42
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Wu W, Qiu J, Wang A, Li Z. Impact of whole cereals and processing on type 2 diabetes mellitus: a review. Crit Rev Food Sci Nutr 2019; 60:1447-1474. [DOI: 10.1080/10408398.2019.1574708] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Weijing Wu
- College of Food Science and Nutritional Engineering, China Agricultural University, Haidian, Beijing, China
- Laboratory of nutrition and food safety, Xiamen Medical College, Xiamen, Fujian, China
| | - Ju Qiu
- Ministry of Agriculture, Institute of Food and Nutrition Development, Haidian, Beijing, China
| | - Aili Wang
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, Virginia, USA
| | - Zaigui Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Haidian, Beijing, China
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43
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Bozbulut R, Sanlier N. Promising effects of β-glucans on glyceamic control in diabetes. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2018.11.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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44
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Jayachandran M, Chen J, Chung SSM, Xu B. A critical review on the impacts of β-glucans on gut microbiota and human health. J Nutr Biochem 2018; 61:101-110. [DOI: 10.1016/j.jnutbio.2018.06.010] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 06/04/2018] [Accepted: 06/26/2018] [Indexed: 02/07/2023]
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45
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Ferreira LG, Endrighi M, Lisenko KG, de Oliveira MRD, Damasceno MR, Claudino JA, Gutierres PG, Peconick AP, Saad FMDOB, Zangeronimo MG. Oat beta-glucan as a dietary supplement for dogs. PLoS One 2018; 13:e0201133. [PMID: 30063762 PMCID: PMC6067736 DOI: 10.1371/journal.pone.0201133] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 07/08/2018] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to evaluate the effects of oat beta-glucan supplementation on metabolic, physiological, immunological and nutritional variables in adult dogs. Fourteen dogs were fed a control diet or a diet supplemented with 1% beta-glucan during 71 days. Serum concentrations of glucose, total cholesterol and lipoprotein fractions, as well as plasma concentrations of peptide YY and ghrelin, were determined. In addition, coefficient of total tract apparent macronutrient digestibility (CTTAD), food intake and fecal output, score, and pH were evaluated. For evaluation of immunological variables, serum concentrations of interleukin-4 and interferon gamma were determined on days 0, 57 and 71, which corresponded to blood collection prior to beta-glucan supplementation, and at 7 and 14 days post first and second dose of vaccination (Pneumodog®, Merial, Campinas, Brazil), respectively. Animals fed the supplemented diet showed (P<0.05) lower serum concentrations of total cholesterol and low and very low density lipoproteins, lower coefficients of total tract apparent digestibility of dry matter, organic matter, mineral matter and ether extract, higher fecal output and lower fecal consistency, as well as a tendency (P = 0.07) of decreasing the coefficient of total tract apparent digestibility of crude protein. Moreover, the supplemented diet resulted in lower number of red blood cells, hematocrit percentage and hemoglobin concentration 21 days post-vaccination as well as lower serum concentration of interleukin-4 seven days post-vaccination (P<0.05). It is concluded that oat beta-glucan extract can be used as a dietary supplement for dogs at a dose of 10 g/kg of food, being effective in reducing blood concentrations of total cholesterol, LDL-c and VLDL-c as well as CTTAD of nutrients, demonstrating a potential to be used in the feeding of obese animals. In addition, by reducing the predominance of a Th2 response, oat beta-glucan can positively modulate the vaccine response of animals.
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Affiliation(s)
- Lívia Geraldi Ferreira
- Veterinary Medicine Department, Federal University of Lavras, Lavras, Minas Gerais, Brazil
| | - Mariangela Endrighi
- Veterinary Medicine Department, Federal University of Lavras, Lavras, Minas Gerais, Brazil
| | | | | | | | | | | | - Ana Paula Peconick
- Veterinary Medicine Department, Federal University of Lavras, Lavras, Minas Gerais, Brazil
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46
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Cassidy YM, McSorley EM, Allsopp PJ. Effect of soluble dietary fibre on postprandial blood glucose response and its potential as a functional food ingredient. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.05.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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47
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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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48
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McRae MP. Dietary Fiber Intake and Type 2 Diabetes Mellitus: An Umbrella Review of Meta-analyses. J Chiropr Med 2018; 17:44-53. [PMID: 29628808 DOI: 10.1016/j.jcm.2017.11.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/25/2017] [Accepted: 11/15/2017] [Indexed: 01/04/2023] Open
Abstract
Objective The purpose of this study was to review previously published meta-analyses on the effectiveness of dietary fiber on type 2 diabetes. Methods An umbrella review of all published meta-analyses was performed. A PubMed search from January 1, 1980, to April 30, 2017, was conducted using the following search strategy: (fiber OR glucan OR psyllium) AND (meta-analysis OR systematic review). Only English-language publications that provided quantitative statistical analysis on type 2 diabetes, fasting blood glucose concentrations, or glycosylated hemoglobin were retrieved. Results Sixteen meta-analyses were retrieved for inclusion in this umbrella review. In the meta-analyses comparing highest versus lowest dietary fiber intake, there was a statistically significant reduction in the relative risk (RR) of type 2 diabetes (RR = 0.81-0.85), with the greatest benefit coming from cereal fibers (RR = 0.67-0.87). However, statistically significant heterogeneity was observed in all of these meta-analyses. In the meta-analyses of supplementation studies using β-glucan or psyllium fibers on type 2 diabetic participants, statistically significant reductions were identified in both fasting blood glucose concentrations and glycosylated hemoglobin percentages. Conclusion This review suggests that those consuming the highest amounts of dietary fiber, especially cereal fiber, may benefit from a reduction in the incidence of developing type 2 diabetes. There also appears to be a small reduction in fasting blood glucose concentration, as well as a small reduction in glycosylated hemoglobin percentage for individuals with type 2 diabetes who add β-glucan or psyllium to their daily dietary intake.
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Affiliation(s)
- Marc P McRae
- Department of Basic Sciences, National University of Health Sciences, Lombard, Illinois
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49
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Wolever TMS, Jenkins AL, Prudence K, Johnson J, Duss R, Chu Y, Steinert RE. Effect of adding oat bran to instant oatmeal on glycaemic response in humans - a study to establish the minimum effective dose of oat β-glucan. Food Funct 2018; 9:1692-1700. [PMID: 29480316 DOI: 10.1039/c7fo01768e] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reducing the glycaemic response to carbohydrate-containing foods may have desirable physiological effects for many people. Here, we aimed to determine the minimum amount of oat β-glucan from oat-bran which, when added to instant-oatmeal, would reduce the glycaemic response by 20% compared to a β-glucan-free cereal. Therefore, the glycaemic responses elicited by one serving (27 g) instant-oatmeal plus 247 g 2% milk (IO, 28 g available-carbohydrate, 1.2 g β-glucan) or IO plus 0.2, 0.4, 0.8 or 1.6 g oat β-glucan (OBG) from oat-bran, or an available-carbohydrate matched portion of cream of rice (CR) plus milk were measured over 2 h in n = 40 subjects using a randomized, cross-over design. The primary endpoint was incremental area under the curve (iAUC). The secondary endpoint was glucose peak-rise. The results showed that grams OBG consumed were significantly correlated with mean iAUC (p = 0.009) and with mean glucose peak-rise (p = 0.002). Each gram of OBG reduced iAUC by 7% and peak-rise by 15%. Thus, to achieve a ≥20% reduction in iAUC relative to CR, 1.6 g OBG had to be added to IO (74 ± 7 vs. 93 ± 6 mmol min L-1, p < 0.05), but, to achieve a 20% reduction in peak-rise, only 0.4 g OBG was required (2.00 ± 0.1 vs. 2.40 ± 0.1 mmol, p < 0.05). We conclude that adding OBG to IO flattened postprandial glycaemic responses in a dose-dependent fashion; 1.6 g OBG was required to reduce iAUC by ≥20% versus CR, but a 20% reduction in peak-rise required only 0.4 g. The greater effect of OGB on peak-rise than iAUC presumably reflects the way viscous dietary fibres modulate glucose absorption kinetics.
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Affiliation(s)
| | | | - Kevin Prudence
- DSM Nutritional Products Ltd., R&D Human Nutrition and Health, Basel, Switzerland
| | - Jodee Johnson
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA
| | - Ruedi Duss
- DSM Nutritional Products Ltd., R&D Human Nutrition and Health, Basel, Switzerland
| | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA
| | - Robert E Steinert
- DSM Nutritional Products Ltd., R&D Human Nutrition and Health, Basel, Switzerland and Department of Surgery, Division of Visceral and Transplantation Surgery, University Hospital Zürich, Zürich, Switzerland
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50
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Sima P, Vannucci L, Vetvicka V. β-glucans and cholesterol (Review). Int J Mol Med 2018; 41:1799-1808. [PMID: 29393350 PMCID: PMC5810204 DOI: 10.3892/ijmm.2018.3411] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/09/2018] [Indexed: 12/31/2022] Open
Abstract
Hypercholesterolemia is one of primary risk factors of cardiovascular disease, together with metabolic syndrome, hypertension and diabetes. Although progress has been made, the search for novel methods of preventing and treating dyslipidemia is ongoing and current therapies for cardiovascular disease induce various side effects. β-glucans are linear unbranched polysaccharides found in various natural sources, such as mushrooms. Due to their structure they are able to interact with innate immunity receptors, however they also act as dietary fibers in the digestive tract. As there are two forms of β-glucans, insoluble and soluble forms, they are able to interact with lipids and biliary salts in the bowel and consequently reduce cholesterol levels. Therefore, they may be developed as a suitable therapeutic option to treat patients with dyslipidemia, as they are natural molecules that do not induce any significant side effects. The current review discusses the evidence supporting the effects of β-glucans on cholesterol levels.
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Affiliation(s)
- Petr Sima
- Laboratory of Immunotherapy, Institute of Microbiology of The Czech Academy of Sciences, 14220 Prague 4, Czech Republic
| | - Luca Vannucci
- Laboratory of Immunotherapy, Institute of Microbiology of The Czech Academy of Sciences, 14220 Prague 4, Czech Republic
| | - Vaclav Vetvicka
- Department of Pathology, University of Louisville, Louisville, KY 40202, USA
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