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Whelehan G, West S, Abdelrahman DR, Murton AJ, Finnigan TJA, Wall BT, Stephens FB. The addition of mycoprotein to a mixed-meal impacts postprandial glucose kinetics without altering blood glucose concentrations: a randomised controlled trial. Eur J Clin Nutr 2024; 78:757-764. [PMID: 39003347 PMCID: PMC11368804 DOI: 10.1038/s41430-024-01470-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/15/2024]
Abstract
BACKGROUND Mycoprotein is a high-fibre food previously shown to reduce postprandial glucose concentrations when ingested within a mixed-meal. We applied a dual stable isotope tracer approach to determine whether this is due to a reduced rate of appearance of glucose, in participants of ranging BMI. METHODS Twenty-four adults (F = 8, BMI 30 ± 6 kg·m-2) attended 2 trials in a double-blind, randomised, cross-over design. Participants ingested two energy and macronutrient matched milk-based drinks (enriched with 1000 mg [U-13C6] glucose in a subset of 12 participants), containing 50 g glucose and either 0 (CON) or 20 g (MYC) mycoprotein. A primed continuous intravenous infusion of D-[6,6-2H2] glucose determined plasma glucose kinetics over 6 h. Postprandial time-course, and AUC, of glucose and insulin concentration, rate of disappearance (RdT) and appearance of exogenous (RaEx), endogenous (EGP), and total (RaT) plasma glucose were assessed using two- and one-way ANOVA. RESULTS Drink ingestion increased blood glucose and serum insulin concentrations (P < 0.05) and were comparable between conditions (P > 0.05). Both RaT and RdT were higher with MYC compared with CON over 6 h (mean 6 h glucose appearance and disappearance increased by 5 and 9%, respectively, P < 0.05). RaEx was not affected by MYC ingestion over 6 h (P > 0.05). The mean contribution of EGP to total glucose appearance was 15% greater with MYC, with a trend towards significance (P = 0.05). There was no relationship between BMI and the response to MYC ingestion for any of the variables (P < 0.05). CONCLUSION The ingestion of mycoprotein within a mixed-meal impacted postprandial glucose kinetics, but not blood glucose or serum insulin concentrations, in individuals of ranging BMI. CLINICAL TRIAL REGISTRY NUMBER AND WEBSITE This trial was registered at clinicaltrials.gov as NCT04084639 and can be accessed at https://clinicaltrials.gov/ct2/show/NCT04084639 .
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Affiliation(s)
- Gráinne Whelehan
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, EX1 2LU, UK
| | - Sam West
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, EX1 2LU, UK
| | - Doaa R Abdelrahman
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, USA
- Sealy Center of Aging, University of Texas Medical Branch, Galveston, TX, USA
| | - Andrew J Murton
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, USA
- Sealy Center of Aging, University of Texas Medical Branch, Galveston, TX, USA
| | | | - Benjamin T Wall
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, EX1 2LU, UK
| | - Francis B Stephens
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, EX1 2LU, UK.
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Aubin A, Hornero-Ramirez H, Ranaivo H, Simon C, Van Den Berghe L, Favier NF, Dussous I, Roger L, Laville M, Béra-Maillet C, Doré J, Caussy C, Nazare JA. Assessing metabolic flexibility response to a multifibre diet: a randomised-controlled trial. J Hum Nutr Diet 2024. [PMID: 39138876 DOI: 10.1111/jhn.13350] [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: 12/08/2023] [Accepted: 06/30/2024] [Indexed: 08/15/2024]
Abstract
INTRODUCTION Metabolic flexibility (MetF), defined as the ability to switch between fat and glucose oxidation, is increasingly recognised as a critical marker for assessing responses to dietary interventions. Previously, we showed that the consumption of multifibre bread improved insulin sensitivity and reduced low-density lipoprotein cholesterol (LDLc) levels in overweight and obese individuals. As a secondary objective, we aimed to explore whether our intervention could also improve MetF. METHODS In this study, 39 subjects at cardiometabolic risk participated in a double-blind, randomised, crossover trial lasting 8 weeks, repeated twice. During each phase, participants consumed either 150 g of standard bread daily or bread enriched with a mixture of seven dietary fibres. MetF response was assessed using a mixed-meal tolerance test (MMTT), analysing changes in respiratory quotient (∆RQ) measured using indirect calorimetry. RESULTS Although there were no significant differences in ∆RQ changes induced by dietary fibre between the two diets, these changes were positively correlated with postprandial triglyceride excursion (∆TG) at baseline. Subgroup analysis of baseline fasting and postprandial plasma metabolites was conducted to characterise MetF responders. These responders exhibited higher baseline fasting LDLc levels and greater post-MMTT ∆TG. CONCLUSION In conclusion, although dietary fibres did not directly impact MetF in this study, our findings highlight potential determinants of MetF response, warranting further investigation in dedicated future interventions.
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Affiliation(s)
- Adrien Aubin
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
- Département Endocrinologie, Diabète et Nutrition, Hospices Civils de Lyon, Hôpital Lyon Sud, Pierre-Bénite, France
| | - Hugo Hornero-Ramirez
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | - Harimalala Ranaivo
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | - Chantal Simon
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | - Laurie Van Den Berghe
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | - Nathalie Feugier Favier
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | | | | | - Martine Laville
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
| | - Christel Béra-Maillet
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
| | - Joël Doré
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Université, Paris-Saclay, INRAE, MetaGenoPolis, Jouy-en-Josas, France
| | - Cyrielle Caussy
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
- Département Endocrinologie, Diabète et Nutrition, Hospices Civils de Lyon, Hôpital Lyon Sud, Pierre-Bénite, France
| | - Julie-Anne Nazare
- Centre de Recherche En Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, Cens, Fcrin/force Network, Pierre Bénite, France
- Univ-Lyon, CarMeN Laboratory, Inserm, Inrae, Université Claude Bernard Lyon-1, Oullins, France
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Zhang Y, Li J, Xie J, Xue B, Li X, Gan J, Sun T. The Impact of Food Processing on the Structure and Hypoglycemic Effect of Oat β-glucan. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2023; 78:506-511. [PMID: 37624567 DOI: 10.1007/s11130-023-01095-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/11/2023] [Indexed: 08/26/2023]
Abstract
The impact of food processing including baking, steaming and bread making, on the structure and hypoglycemic effect of oat β-glucan was studied. The structural analysis revealed the β-D-glucopyranosyl units of β-glucan was unchanged in aforementioned processing. The baking processing endowed β-glucan with increased molecular weight (Mw) and viscosity, which enhanced the capacity of β-glucan to delay starch digestion in vitro, such as the rapidly-digestible starch content decreased, the slowly-digestible and resistant starch content increased, and the glycemic index (GI) value decreased. Meanwhile, the inhibitory activity of β-glucan against α-glucosidase and α-amylase was enhanced by baking processing. By contrast, during steaming and bread making processing, β-glucan showed decreased Mw and viscosity, which accelerated starch digestion in vitro and reduced the inhibitory activity of β-glucan against α-glucosidase and α-amylase. Apart from that, baking processing promoted the physiological and antioxidant properties of β-glucan, but the properties decreased during steaming and bread making processing. The results suggest that oat raw materials can be treated with dry heat and high temperature, avoiding moist heat and fermentation treatments to maximize the hypoglycemic effect of β-glucan.
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Affiliation(s)
- Yi Zhang
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Jinran Li
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Jing Xie
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Bin Xue
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Xiaohui Li
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianhong Gan
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China
| | - Tao Sun
- College of Food Science & Technology, Shanghai Ocean University, Shanghai, 201306, China.
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Boers HM, van Dijk TH, Duchateau GS, Mela DJ, Hiemstra H, Hoogenraad AR, Priebe MG. Effect of mulberry fruit extract on glucose fluxes after a wheat porridge meal: a dual isotope study in healthy human subjects. Eur J Clin Nutr 2023; 77:741-747. [PMID: 36944719 DOI: 10.1038/s41430-023-01282-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 03/04/2023] [Accepted: 03/09/2023] [Indexed: 03/23/2023]
Abstract
BACKGROUND Previous research has shown the efficacy of mulberry extracts for lowering post-prandial glucose (PPG) responses. The postulated mechanism is slowing of glucose absorption, but effects on glucose disposal or endogenous production are also possible. This research assessed the effect of a specified mulberry fruit extract (MFE) on these three glucose flux parameters. METHODS The study used a double-blind, randomized, controlled, full cross-over design. In 3 counter-balanced treatments, 12 healthy adult male subjects, mean (SD) age 24.9 (2.50) years and body mass index 22.5 (1.57) kg/m2, consumed porridge prepared from 13C-labelled wheat, with or without addition of 0.75 g MFE, or a solution of 13C-glucose in water. A co-administered 2H-glucose venous infusion allowed for assessment of glucose disposal. Glucose flux parameters, cumulative absorption (time to 50% absorption, T50%abs), and PPG positive incremental area under the curve from 0 to 120 min (+iAUC0-120) were determined from total and isotopically labelled glucose in plasma. As this exploratory study was not powered for formal inferential statistical tests, results are reported as the mean percent difference (or minutes for T50%abs) between treatments with 95% CI. RESULTS MFE increased mean T50%abs by 10.2 min, (95% CI 3.9-16.5 min), and reduced mean 2 h post-meal rate of glucose appearance by 8.4% (95% CI -14.9 to -1.4%) and PPG + iAUC0-120 by 11% (95% CI -26.3 to -7.3%), with no significant changes in glucose disposal or endogenous production. CONCLUSIONS The PPG-lowering effect of MFE is primarily mediated by a reduced rate of glucose uptake.
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Affiliation(s)
- Hanny M Boers
- Unilever Foods Innovation Centre, 6708 WH, Wageningen, The Netherlands.
| | - Theo H van Dijk
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, 9713 GZ, Groningen, The Netherlands
| | - Guus S Duchateau
- Unilever Foods Innovation Centre, 6708 WH, Wageningen, The Netherlands
| | - David J Mela
- Unilever Foods Innovation Centre, 6708 WH, Wageningen, The Netherlands.
| | - Harry Hiemstra
- Unilever Foods Innovation Centre, 6708 WH, Wageningen, The Netherlands
| | | | - Marion G Priebe
- Center for Medical Biomics, University Medical Center Groningen, University of Groningen, 9713 AV, Groningen, The Netherlands
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Li Y, Liu J, Lv P, Mi J, Zhao B. Silicon improves the photosynthetic performance of oat leaves infected with Puccinia graminis f. sp. avenae. FRONTIERS IN PLANT SCIENCE 2022; 13:1037136. [PMID: 36507416 PMCID: PMC9727285 DOI: 10.3389/fpls.2022.1037136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/07/2022] [Indexed: 06/17/2023]
Abstract
Stem rust, caused by Puccinia graminis f. sp. avenae (Pga) is a key disease affecting oat production worldwide. Silicon (Si) plays an essential role in enhancing plant resistance against pathogens. However, the scientific evidence of Si-mediated stem rust resistance of oat from the photosynthetic perspective has not been reported. The specific objective of this research was to investigate the effects of Si application on disease inhibition, photosynthetic gas exchange parameters, light response parameters, photosynthetic pigments and chlorophyll fluorescence parameters under Pga infection. Our results illustrated that Si application significantly reduced rust severity while the other parameters like net photosynthetic rate (P n), stomatal conductance (Gs), intercellular CO2 concentration (C i) and transpiration rate (T r) were significantly increased. Si application increased maximum photosynthetic rate (P nmax) and light saturation point (LSP), while reduced the dark respiration rate (Rd) and light compensation point (LCP). The results also indicated that Si application significantly increased the activities of maximum fluorescence (F m), variable fluorescence (F v), maximum quantum yield of photosystem II (F v/F m), photochemical quenching (qP), photosynthetic performance index (PI ABS), actual PSII quantum yield (ΦPSII), electron transfer rate (ETR), the absorbed light energy per unit reaction center (ABS/RC) and the dissipated energy per unit reaction center (DIo/RC), whereas it decreased the minimal fluorescence (F o), non-photochemical quenching (NPQ), the absorbed light energy used for electron transfer per unit reaction center (ETo/RC) and the absorbed light energy used for reduction of QA per unit reaction center (TRo/RC). The contents of chlorophyll a, b and carotenoids were also increased due to the change in the activity of parameters due to Si application as mentioned above. In conclusion, the results of the current study suggests that Si imparts tolerance to the stem rust possibly by the underlying mechanisms of improving gas exchange performance, and efficiency of the photochemical compounds in oat leaves.
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Ranaivo H, Zhang Z, Alligier M, Van Den Berghe L, Sothier M, Lambert-Porcheron S, Feugier N, Cuerq C, Machon C, Neyrinck AM, Seethaler B, Rodriguez J, Roumain M, Muccioli GG, Maquet V, Laville M, Bischoff SC, Walter J, Delzenne NM, Nazare JA. Chitin-glucan supplementation improved postprandial metabolism and altered gut microbiota in subjects at cardiometabolic risk in a randomized trial. Sci Rep 2022; 12:8830. [PMID: 35614185 PMCID: PMC9132890 DOI: 10.1038/s41598-022-12920-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/05/2022] [Indexed: 01/04/2023] Open
Abstract
Chitin-glucan (CG), an insoluble dietary fiber, has been shown to improve cardiometabolic disorders associated with obesity in mice. Its effects in healthy subjects has recently been studied, revealing its interaction with the gut microbiota. In this double-blind, randomized, cross-over, twice 3-week exploratory study, we investigated the impacts of CG on the cardiometabolic profile and gut microbiota composition and functions in 15 subjects at cardiometabolic risk. They consumed as a supplement 4.5 g of CG daily or maltodextrin as control. Before and after interventions, fasting and postprandial metabolic parameters and exhaled gases (hydrogen [H2] and methane [CH4]) were evaluated. Gut microbiota composition (16S rRNA gene sequencing analysis), fecal concentrations of bile acids, long- and short-chain fatty acids (LCFA, SCFA), zonulin, calprotectin and lipopolysaccharide binding protein (LBP) were analyzed. Compared to control, CG supplementation increased exhaled H2 following an enriched-fiber breakfast ingestion and decreased postprandial glycemia and triglyceridemia response to a standardized test meal challenge served at lunch. Of note, the decrease in postprandial glycemia was only observed in subjects with higher exhaled H2, assessed upon lactulose breath test performed at inclusion. CG decreased a family belonging to Actinobacteria phylum and increased 3 bacterial taxa: Erysipelotrichaceae UCG.003, Ruminococcaceae UCG.005 and Eubacterium ventriosum group. Fecal metabolites, inflammatory and intestinal permeability markers did not differ between groups. In conclusion, we showed that CG supplementation modified the gut microbiota composition and improved postprandial glycemic response, an early determinant of cardiometabolic risk. Our results also suggest breath H2 production as a non-invasive parameter of interest for predicting the effectiveness of dietary fiber intervention.
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Affiliation(s)
- Harimalala Ranaivo
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Zhengxiao Zhang
- College of Food and Biological Engineering, Jimei University, Xiamen, Fujian, China
| | - Maud Alligier
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Laurie Van Den Berghe
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Monique Sothier
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Stéphanie Lambert-Porcheron
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Nathalie Feugier
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Charlotte Cuerq
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
- Service de Biochimie et Biologie Moléculaire, Unité Médicale Dyslipidémies et Dysfonctions Nutritionnelles et Digestives, Hospices Civils de Lyon, Pierre-Bénite, France
| | - Christelle Machon
- Hospices Civils de Lyon, Service de Biochimie, Centre de Biologie Sud, Hôpital Lyon Sud, Pierre-Bénite, France
| | - Audrey M Neyrinck
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Benjamin Seethaler
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany
| | - Julie Rodriguez
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Martin Roumain
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Brussels, Belgium
| | - Giulio G Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Brussels, Belgium
| | - Véronique Maquet
- KitoZyme, Parc Industriel des Hauts-Sart, Zone 2, Rue de Milmort 680, 4040, Herstal, Belgium
| | - Martine Laville
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France
| | - Stephan C Bischoff
- Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany
| | - Jens Walter
- Department of Medicine, and School of Microbiology, APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Nathalie M Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Julie-Anne Nazare
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Hospices Civils de Lyon, CENS, FCRIN/FORCE Network, Pierre-Bénite, France.
- Univ-Lyon, CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon-1, 69600, Oullins, France.
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Ferreira CS, Vendramini THA, Amaral AR, Rentas MF, Ernandes MC, da Silva FL, Oba PM, de Oliveira Roberti Filho F, Brunetto MA. Metabolic variables of obese dogs with insulin resistance supplemented with yeast beta-glucan. BMC Vet Res 2022; 18:14. [PMID: 34980115 PMCID: PMC8722019 DOI: 10.1186/s12917-021-03106-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 08/14/2021] [Indexed: 11/19/2022] Open
Abstract
Background Obesity is one of the most common nutritional disorders in dogs and cats and is related to the development metabolic comorbidities. Weight loss is the recommended treatment, but success is difficult due to the poor satiety control. Yeast beta-glucans are known as biological modifiers because of their innumerable functions reported in studies with mice and humans, but only one study with dogs was found. This study aimed to evaluate the effects of a diet supplemented with 0.1% beta-glucan on glucose, lipid homeostasis, inflammatory cytokines and satiety parameters in obese dogs. Fourteen dogs composed three experimental groups: Obese group (OG) with seven dogs with body condition score (BCS) 8 or 9; Lean group (LG) included seven non-obese dogs with a BCS of 5; and Supplemented Obese group (SOG) was the OG dogs after 90 days of consumption of the experimental diet. Results Compared to OG, SOG had lower plasma basal glycemic values (p = 0.05) and reduced serum cholesterol and triglyceride levels. TNF-α was lower in SOG than in OG (p = 0.05), and GLP-1 was increased in SOG compared to OG and LG (p = 0.02). Conclusion These results are novel and important for recognizing the possibility of using beta-glucan in obesity prevention and treatment.
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Affiliation(s)
- Chayanne Silva Ferreira
- Rio Verde University, Fazenda Fontes do Saber, PO Box 104, Rio Verde, Goiás, 75901-970, Brazil
| | - Thiago Henrique Annibale Vendramini
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Andressa Rodrigues Amaral
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Mariana Fragoso Rentas
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Mariane Ceschin Ernandes
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | - Flavio Lopes da Silva
- Grandfood Industria e Comercio LTDA, Luiz Augusto de Oliveira Hwy, km 204, Dourado, São Paulo, 13590-000, Brazil
| | - Patricia Massae Oba
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil
| | | | - Marcio Antonio Brunetto
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, 87, Prof. Orlando Marques de Paiva Ave, São Paulo, São Paulo, 05508270, Brazil.
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Oat Intake and Risk of Type 2 Diabetes, Cardiovascular Disease and All-Cause Mortality: A Systematic Review and Meta-Analysis. Nutrients 2021; 13:nu13082560. [PMID: 34444718 PMCID: PMC8398256 DOI: 10.3390/nu13082560] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 11/16/2022] Open
Abstract
Cardiovascular disease (CVD) and type 2 diabetes (T2D) remain the top disease and mortality burdens worldwide. Oats have been shown to benefit cardiovascular health and improve insulin resistance. However, the evidence linking oat consumption with CVD, T2D and all-cause mortality remains inconclusive. We conducted a comprehensive systematic review and meta-analysis of prospective cohort studies to evaluate the associations between oat consumption and risks of T2D, CVD and all-cause mortality in the general population. Five electronic databases were searched until September, 2020. Study specific relative risks (RR) were meta-analyzed using random effect models. Of 4686 relevant references, we included 9 articles, based on 8 unique studies and 471,157 participants. Comparing oat consumers versus non-consumers, RRs were 0.86 (95% CI 0.72–1.03) for T2D incidence and 0.73 (95% CI 0.5–1.07) for combined CVD incidence. Comparing participants with highest versus lowest oat intake, RRs were 0.78 (95% CI 0.74–0.82) for T2D incidence, 0.81 (95% CI 0.61–1.08) for CHD incidence and 0.79 (95% CI 0.59–1.07) for stroke. For all-cause mortality one study based on three cohorts found RR for men and women were 0.76 (95% CI 0.69–0.85) and 0.78 (95% CI 0.70–0.87), respectively. Most studies (n = 6) were of fair to good quality. This meta-analysis suggests that consumption of oat could reduce the risk for T2D and all-cause mortality, while no significant association was found for CVD. Future studies should address a lack of standardized methods in assessing overall oat intake and type of oat products, and investigate a dose-dependent response of oat products on cardiometabolic outcomes in order to introduce oat as preventive and treatment options for the public.
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Xu Z, Chen X, Lu X, Zhao B, Yang Y, Liu J. Integrative analysis of transcriptome and metabolome reveal mechanism of tolerance to salt stress in oat (Avena sativa L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 160:315-328. [PMID: 33545609 DOI: 10.1016/j.plaphy.2021.01.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Soil salinity is among the crucial factors that impact on crop productivity, including oat (Avena sativa L.). Herein, we used two distinct oat cultivars with varied salt tolerance levels to unravel adaptive responses to salt stress by metabolomic and transcriptomic characterization. Metabolomic profiling revealed 201 metabolites, including saccharides, amino acids, organic acids, and secondary metabolites. The levels of most saccharides and amino acids were elevated in Baiyan 2 (BY2) as well as in Baiyan 5 (BY5) exposed to salt stress. In the tolerant cultivar BY2 exposed to 150 mM NaCl, concentrations of most of the metabolites increased significantly, with sucrose increased by 38.34-fold, Sophorose increased by 314.15-fold and Isomaltose 2 increased by 25.76-fold. In the sensitive cultivar BY5, the concentrations of most metabolites increased after the plant was exposed to 150 mM NaCl but decreased after the plant was exposed to 300 mM NaCl. Transcriptomic analysis revealed that gene expressions in BY5 were significantly affected under exposure to 300 mM NaCl (34040 genes up-regulated and 14757 genes down-regulated). Assessment of metabolic pathways as well as KEGG enrichment revealed that salt stress interferes with the biosynthesis of two oat cultivars, including capacity expenditure and sugar metabolism. Most of the BY2 genes enhanced energy consumption (for example, glycolysis) and biosynthesis (for instance, starch and sugar metabolism) under salt stress. In contrast, genes in BY5 were found to be down-regulated, leading to the inhibition of energy consumption and biosynthesis, which may also be attributed to salt sensitivity in BY5. In addition, the modified Na+/K+ transporter genes expression is associated with the predominant ionic responses in BY2, which leads low concentration of Na+ and high K+ when exposed to high salt situations. These findings suggest that the varied defensive capacities of these two oat cultivars in response to salt stress are due to their variations in energy-expenditure strategy, synthesis of energy substances and ion transport in roots. Our present study offers a crucial reference for oat cultivation under saline soil.
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Affiliation(s)
- Zhongshan Xu
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China; Cereal Engineering Technology Research Center, Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, 010019, China; National Outstanding Talents in Agricultural Research and Their Innovative Teams, Hohhot, Inner Mongolia, 010019, China
| | - Xiaojing Chen
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China; Cereal Engineering Technology Research Center, Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, 010019, China; National Outstanding Talents in Agricultural Research and Their Innovative Teams, Hohhot, Inner Mongolia, 010019, China
| | - Xiaoping Lu
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China
| | - Baoping Zhao
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China; Cereal Engineering Technology Research Center, Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, 010019, China; National Outstanding Talents in Agricultural Research and Their Innovative Teams, Hohhot, Inner Mongolia, 010019, China
| | - Yanming Yang
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China; Cereal Engineering Technology Research Center, Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, 010019, China; National Outstanding Talents in Agricultural Research and Their Innovative Teams, Hohhot, Inner Mongolia, 010019, China
| | - Jinghui Liu
- Cereal Industry Collaborative Innovation Center, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010019, China; Cereal Engineering Technology Research Center, Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, 010019, China; National Outstanding Talents in Agricultural Research and Their Innovative Teams, Hohhot, Inner Mongolia, 010019, China.
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Coelho MOC, Monteyne AJ, Dunlop MV, Harris HC, Morrison DJ, Stephens FB, Wall BT. Mycoprotein as a possible alternative source of dietary protein to support muscle and metabolic health. Nutr Rev 2020; 78:486-497. [PMID: 31841152 DOI: 10.1093/nutrit/nuz077] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The world's population is expanding, leading to an increased global requirement for dietary protein to support health and adaptation in various populations. Though a strong evidence base supports the nutritional value of animal-derived dietary proteins, mounting challenges associated with sustainability of these proteins have led to calls for the investigation of alternative, non-animal-derived dietary protein sources. Mycoprotein is a sustainably produced, protein-rich, high-fiber, whole food source derived from the fermentation of fungus. Initial investigations in humans demonstrated that mycoprotein consumption can lower circulating cholesterol concentrations. Recent data also report improved acute postprandial glycemic control and a potent satiety effect following mycoprotein ingestion. It is possible that these beneficial effects are attributable to the amount and type of dietary fiber present in mycoprotein. Emerging data suggest that the amino acid composition and bioavailability of mycoprotein may also position it as a promising dietary protein source to support skeletal muscle protein metabolism. Mycoprotein may be a viable dietary protein source to promote training adaptations in athletes and the maintenance of muscle mass to support healthy aging. Herein, current evidence underlying the metabolic effects of mycoprotein is reviewed, and the key questions to be addressed are highlighted.
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Affiliation(s)
- Mariana O C Coelho
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Alistair J Monteyne
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Mandy V Dunlop
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Hannah C Harris
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom.,School of Medicine, Dentistry and Nursing, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Douglas J Morrison
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom.,Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Francis B Stephens
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Benjamin T Wall
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
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Storz MA, Küster O. Hypocaloric, plant-based oatmeal interventions in the treatment of poorly-controlled type 2 diabetes: A review. Nutr Health 2019; 25:281-290. [PMID: 31500515 DOI: 10.1177/0260106019874683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND Lifestyle interventions, including dietary modifications, play a key role in the treatment of type 2 diabetes. By the second half of the last century, dietary oatmeal interventions had frequently been used in patients with diabetes; however, with the widespread introduction of insulin, this practice gradually fell into disuse. Within the last decades, the original oatmeal intervention, first described in 1903, has been modified towards a hypocaloric, low-fat, and plant-based intervention. AIM The aim of this review was to investigate the current role of these adapted short-term dietary oatmeal interventions in the treatment of patients suffering from poorly-controlled type 2 diabetes. A special focus was put on opportunities for and barriers to its clinical implementation and its potential mechanisms of action. METHODS The electronic databases of PubMed and Google Scholar were searched using the keywords "oat," "oats," "oatmeal," and "diabetes." RESULTS While there are a limited number of clinical studies including hypocaloric short-term dietary oatmeal interventions, there is evidence that these interventions may lead to a significant decrease in mean blood glucose levels and a significant reduction of insulin dosage in patients suffering from poorly-controlled type 2 diabetes. CONCLUSION Modified short-term dietary oatmeal interventions are an effective and economical tool in the treatment of patients suffering from poorly-controlled type 2 diabetes.
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Affiliation(s)
- Maximilian Andreas Storz
- Department of Internal Medicine and Gastroenterology, Die Filderklinik, Filderstadt-Bonlanden, Germany
| | - Onno Küster
- Department of Internal Medicine and Gastroenterology, Die Filderklinik, Filderstadt-Bonlanden, Germany
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Boers HM, Alssema M, Mela DJ, Peters HPF, Vonk RJ, Priebe MG. The Rate of Glucose Appearance Is Related to Postprandial Glucose and Insulin Responses in Adults: A Systematic Review and Meta-analysis of Stable Isotope Studies. J Nutr 2019; 149:1896-1903. [PMID: 31291451 DOI: 10.1093/jn/nxz150] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/11/2019] [Accepted: 06/05/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND It is often assumed that lower postprandial glucose (PPG) and insulin (PPI) responses are induced by slower glucose influx from the gut (e.g., by delayed carbohydrate digestion). However, changes in the rate of appearance of glucose in the peripheral circulation [rate of appearance of exogenous glucose (RaE)] may be accompanied by changes in endogenous glucose production (EGP) and the rate of disappearance of total glucose into tissues (RdT). The quantitative relationships between reductions in RaE and PPG/PPI levels are unclear. OBJECTIVES The objective was to perform a meta-analysis to quantify the effect of changes in RaE on changes in PPG and PPI levels (primary) and EGP and RdT (secondary). METHODS We systematically searched the Scopus, Medline, and Cochrane library databases through 10 January 2019 for randomized, controlled, carbohydrate-rich interventions that aimed to reduce RaE in humans, measured using dual or triple stable isotope methods. The 2-h net incremental AUCs for all variables were extracted or calculated. Relationships between RaE and outcomes were quantified by weighted regression analyses. RESULTS There were 12 articles, including 17 comparisons, that satisfied the inclusion criteria. The subjects were mainly men (60%), with age and BMI ranges of 18-40 y and 20.0-27.5 kg/m2, respectively. A 10% reduction in RaE was associated with reductions in PPG levels, PPI levels, and the RdT of 7% (95% CI: 2%, 12%; P = 0.010), 8% (95% CI: 2%, 13%; P = 0.012), and 11% (95% CI: 4%, 17%; P = 0.005), respectively, but was not significantly associated with a change in EGP (13%; 95% CI: -7%, 33%; P = 0.176). All fluxes together explained 70% and 26% of the variances in PPG and PPI levels, respectively. CONCLUSIONS In adults, reducing glucose RaE by diet is associated with significant reductions in PPG levels, PPI levels, and the rate of glucose disposal. This trial was registered in the PROSPERO database with identifier CRD42018084824.
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Affiliation(s)
- Hanny M Boers
- Unilever Research and Development Vlaardingen, Vlaardingen, Netherlands
| | - Marjan Alssema
- Unilever Research and Development Vlaardingen, Vlaardingen, Netherlands
| | - David J Mela
- Unilever Research and Development Vlaardingen, Vlaardingen, Netherlands
| | - Harry P F Peters
- Unilever Research and Development Vlaardingen, Vlaardingen, Netherlands
| | - Roel J Vonk
- Center for Medical Biomics, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marion G Priebe
- Center for Medical Biomics, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Ullah S, Khalil AA, Shaukat F, Song Y. Sources, Extraction and Biomedical Properties of Polysaccharides. Foods 2019; 8:E304. [PMID: 31374889 PMCID: PMC6723881 DOI: 10.3390/foods8080304] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 07/27/2019] [Accepted: 07/28/2019] [Indexed: 12/14/2022] Open
Abstract
In the recent era, bioactive compounds from plants have received great attention because of their vital health-related activities, such as antimicrobial activity, antioxidant activity, anticoagulant activity, anti-diabetic activity, UV protection, antiviral activity, hypoglycemia, etc. Previous studies have already shown that polysaccharides found in plants are not likely to be toxic. Based on these inspirational comments, most research focused on the isolation, identification, and bioactivities of polysaccharides. A large number of biologically active polysaccharides have been isolated with varying structural and biological activities. In this review, a comprehensive summary is provided of the recent developments in the physical and chemical properties as well as biological activities of polysaccharides from a number of important natural sources, such as wheat bran, orange peel, barely, fungi, algae, lichen, etc. This review also focused on biomedical applications of polysaccharides. The contents presented in this review will be useful as a reference for future research as well as for the extraction and application of these bioactive polysaccharides as a therapeutic agent.
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Affiliation(s)
- Samee Ullah
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore 54000, Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore 54000, Pakistan
| | - Faryal Shaukat
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
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Wolever TMS, Jenkins AL, Yang J, Nisbet M, Johnson J, Chu Y, Pan Y. An Optimized, Slowly Digested Savory Cluster Reduced Postprandial Glucose and Insulin Responses in Healthy Human Subjects. Curr Dev Nutr 2019; 3:nzz006. [PMID: 30882061 PMCID: PMC6411418 DOI: 10.1093/cdn/nzz006] [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: 08/02/2018] [Revised: 09/19/2018] [Accepted: 01/14/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Slowly digested carbohydrates are perceived as beneficial by some consumers, and various regulatory bodies have published specific criteria defining lower postprandial glycemic response. We developed an optimized savory cluster snack containing slowly digested starch. OBJECTIVE We compared the glucose and insulin responses elicited by the optimized (test-) cluster, a control-cluster, and an available-carbohydrate-matched portion of white bread in healthy individuals. The primary outcome was blood-glucose peak rise.We tested healthy individuals (n = 25) on 3 occasions using a randomized crossover design. On each occasion, the participants provided fasting blood samples and then consumed 1 serving of test-cluster, control-cluster, or white bread. We then measured the participants' blood-glucose and serum-insulin concentrations over the next 4 h. RESULTS The test-cluster elicited a significantly lower blood-glucose peak rise (mean ± SEM: 1.24 ± 0.09 mmol/L) and incremental area under the curve (iAUC; 67 ± 8 mmol × min/L) than the control-cluster (2.27 ± 0.13 mmol/L and 117 ± 10 mmol × min/L, respectively) and white bread (2.27 ± 0.16 mmol/L and 114 ± 9 mmol × min/L, respectively). The serum-insulin peak rise and iAUC elicited by the test-cluster (128 ± 13 pmol/L and 6.10 ± 0.73 nmol × min/L, respectively) and white bread (141 ± 20 pmol/L and 6.47 ± 1.11 nmol × min/L, respectively) were significantly lower than those elicited by the control-cluster (205 ± 26 pmol/L and 9.60 ± 1.31 nmol × min/L, respectively). CONCLUSION The test-cluster elicited lower glucose and insulin responses than the control-cluster. The results support the hypothesis that the carbohydrates in the test-cluster are digested and absorbed slowly in vivo.
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Affiliation(s)
| | | | - Jun Yang
- Analytical Sciences, PepsiCo R&D, Plano, TX
| | | | | | - YiFang Chu
- Nutrition Sciences, PepsiCo R&D, Barrington, IL
| | - Yang Pan
- Nutrition Sciences, PepsiCo R&D, Plano, TX
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Wu JR, Leu HB, Yin WH, Tseng WK, Wu YW, Lin TH, Yeh HI, Chang KC, Wang JH, Wu CC, Chen JW. The benefit of secondary prevention with oat fiber in reducing future cardiovascular event among CAD patients after coronary intervention. Sci Rep 2019; 9:3091. [PMID: 30816213 PMCID: PMC6395719 DOI: 10.1038/s41598-019-39310-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 01/18/2019] [Indexed: 11/16/2022] Open
Abstract
There is limited information about the association between oat fiber intake and future cardiovascular events in CAD patients after coronary intervention for secondary prevention. This study enrolled 716 patients after coronary intervention in clinical stable status from the CAD cohort biosignature study. Patients were analyzed according to whether the presence of regular oat fiber intake during the follow-up period, and the association with endpoints including cardiovascular death, non-fatal myocardial infarction, non-fatal stroke and revascularization procedures were analyzed. The average follow-up period is 26.75 ± 8.11 months. Patients taking oat fiber were found to have lower serum levels of LDL, triglycerides, ratio of TC/HDL, as well as lower inflammatory markers values. After adjusting for confounders in the proportional hazard Cox model, oat fiber intake was associated with a lower risk of future revascularization (HR = 0.54, 95% CI 0.35–0.85; p = 0.007), and lower risk of major adverse cardiovascular events (HR = 0.62, 95% CI 0.43–0.88; p = 0.008), suggesting the association of oat fiber use and lower risk of future adverse event in CAD patients after coronary intervention.
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Affiliation(s)
- Jia-Ru Wu
- Divison of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsin-Bang Leu
- Divison of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan. .,Heath Care and Management Center, Taipei Veterans General Hospital, Taipei, Taiwan. .,Cardiovascular Research Center, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Wei-Hsian Yin
- Division of Cardiology, Heart Center, Cheng-Hsin General Hospital, and School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wei-Kung Tseng
- Department of Medical Imaging and Radiological Sciences, I-Shou University and Division of Cardiology, Department of Internal Medicine, E-Da Hospital, Kaohsiung, Taiwan
| | - Yen-Wen Wu
- Cardiology Division of Cardiovascular Medical Center and Department of Nuclear Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Tsung-Hsien Lin
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital and Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hung-I Yeh
- Mackay Memorial Hospital, Mackay Medical College, New Taipei City, Taiwan
| | - Kuan-Cheng Chang
- Division of Cardiology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
| | - Ji-Hung Wang
- Department of Cardiology, Buddhist Tzu-Chi General Hospital, Tzu-Chi University, Hualien, Taiwan
| | - Chau-Chung Wu
- Division of Cardiology, Department of Internal Medicine, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan.,Department of Primary Care Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jaw-Wen Chen
- Divison of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
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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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SARDÁ FAH, GIUNTINI EB, NAZARE JA, KÖNIG D, BAHIA LR, LAJOLO FM, MENEZES EWD. Effectiveness of carbohydrates as a functional ingredient in glycemic control. FOOD SCIENCE AND TECHNOLOGY 2018. [DOI: 10.1590/fst.42517] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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18
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Singh S, Kaur M, Sogi DS, Purewal SS. A comparative study of phytochemicals, antioxidant potential and in-vitro DNA damage protection activity of different oat (Avena sativa) cultivars from India. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2018. [DOI: 10.1007/s11694-018-9950-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Glycaemic and insulinaemic impact of oats soaked overnight in milk vs. cream of rice with and without sugar, nuts, and seeds: a randomized, controlled trial. Eur J Clin Nutr 2018; 73:86-93. [PMID: 30297759 PMCID: PMC6326951 DOI: 10.1038/s41430-018-0329-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 09/07/2018] [Indexed: 12/11/2022]
Abstract
Background/Objectives Soaking oats overnight in milk renders them ready to eat the next morning, however, it is unknown whether oats prepared this way will retain its relatively low glycaemic and insulinaemic impact. Therefore, we compared the glycaemic, insulinaemic and subjective hunger responses elicited by oats soaked overnight in 110 g skim-milk (ONO) vs. cooked cream of rice cereal (CR), both with and without inclusions. Subjects/Methods The project was performed at two research centers (Toronto, Winnipeg) as two separate studies each using a randomized, cross-over design with similar methods. The glycaemic and insulinaemic responses of overnight-fasted participants without diabetes (males:females: Toronto, 24:16; Winnipeg, 20:20) were measured for 3 h after consuming CR and ONO fed alone (Toronto) or with added sugar, nuts, and seeds (CRsns and ONOsns) (Winnipeg). Participants rated subjective hunger using visual analog scales. Data were analyzed by paired t-test. The primary endpoint was 0–2 h incremental area under the curve (iAUC) for glucose. Results Mean glucose iAUC was 33% less, after ONO than CR (mean difference was 39 (51–27) mmol × min/l, p < 0.0001) and 24% less, after ONOsns than CRsns (mean difference was 43 (65–21) mmol × min/l, p = 0.0003). Serum-insulin iAUC was 33% less, after ONO than CR (mean difference 57 (81–40) pmol × hl, p < 0.0001) and 32% less, after ONOsns than CRsns (966 (1360–572) pmol × h/l, p < 0.0001). In both Toronto and Winnipeg, subjective hunger ratings were similar across the two treatments. Conclusions Oats prepared by soaking overnight in skimmed milk without and with inclusions retain their relatively low glycaemic and insulinaemic impact.
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Bader Ul Ain H, Saeed F, Ahmad N, Imran A, Niaz B, Afzaal M, Imran M, Tufail T, Javed A. Functional and health-endorsing properties of wheat and barley cell wall’s non-starch polysaccharides. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1489837] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Huma Bader Ul Ain
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Farhan Saeed
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Nazir Ahmad
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ali Imran
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Bushra Niaz
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Imran
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore-Lahore, Lahore, Pakistan
| | - Tabussam Tufail
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ahsan Javed
- Institute of Home & Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
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Wang Y, Lysøe E, Armarego-Marriott T, Erban A, Paruch L, van Eerde A, Bock R, Liu-Clarke J. Transcriptome and metabolome analyses provide insights into root and root-released organic anion responses to phosphorus deficiency in oat. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3759-3771. [PMID: 29757407 DOI: 10.1093/jxb/ery176] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/09/2018] [Indexed: 05/23/2023]
Abstract
Roots and root-released organic anions play important roles in uptake of phosphorus (P), an essential macronutrient for food production. Oat, ranking sixth in the world's cereal production, contains valuable nutritional compounds and can withstand poor soil conditions. Our aim was to investigate root transcriptional and metabolic responses of oat grown under P-deficient and P-sufficient conditions. We conducted a hydroponic experiment and measured root morphology and organic anion exudation, and analysed changes in the transcriptome and metabolome. Oat roots showed enhanced citrate and malate exudation after 4 weeks of P deficiency. After 10 d of P deficiency, we identified 9371 differentially expressed transcripts with a 2-fold or greater change (P<0.05): 48 sequences predicted to be involved in organic anion biosynthesis and efflux were consistently up-regulated; 24 up-regulated transcripts in oat were also found to be up-regulated upon P starvation in rice and wheat under similar conditions. Phosphorylated metabolites (i.e. glucose-6-phosphate, myo-inositol phosphate) were reduced dramatically, while citrate and malate, some sugars and amino acids increased slightly in P-deficient oat roots. Our data are consistent with a strategy of increased organic anion efflux and a shift in primary metabolism in response to P deficiency in oat.
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Affiliation(s)
- Yanliang Wang
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - Erik Lysøe
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | | | - Alexander Erban
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam-Golm, Germany
| | - Lisa Paruch
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - André van Eerde
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - Ralph Bock
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam-Golm, Germany
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Effect of fibre additions to flatbread flour mixes on glucose kinetics: a randomised controlled trial. Br J Nutr 2017; 118:777-787. [PMID: 29110741 DOI: 10.1017/s0007114517002781] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We previously found that guar gum (GG) and chickpea flour (CPF) added to flatbread wheat flour lowered postprandial blood glucose (PPG) and insulin responses dose dependently. However, rates of glucose influx cannot be determined from PPG, which integrates rates of influx, tissue disposal and hepatic glucose production. The objective was to quantify rates of glucose influx and related fluxes as contributors to changes in PPG with GG and CPF additions to wheat-based flatbreads. In a randomised cross-over design, twelve healthy males consumed each of three different 13C-enriched meals: control flatbreads (C), or C incorporating 15 % CPF with either 2 % (GG2) or 4 % (GG4) GG. A dual isotope technique was used to determine the time to reach 50 % absorption of exogenous glucose (T 50 %abs, primary objective), rate of appearance of exogenous glucose (RaE), rate of appearance of total glucose (RaT), endogenous glucose production (EGP) and rate of disappearance of total glucose (RdT). Additional exploratory outcomes included PPG, insulin, glucose-dependent insulinotropic peptide and glucagon-like peptide 1, which were additionally measured over 4 h. Compared with C, GG2 and GG4 had no significant effect on T 50 %abs. However, GG4 significantly reduced 4-h AUC values for RaE, RaT, RdT and EGP, by 11, 14, 14 and 64 %, respectively, whereas GG2 showed minor effects. Effect sizes over 2 and 4 h were similar except for significantly greater reduction in EGP for GG4 at 2 h. In conclusion, a soluble fibre mix added to flatbreads only slightly reduced rates of glucose influx, but more substantially affected rates of postprandial disposal and hepatic glucose production.
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Wolever TMS, van Klinken BJW, Spruill SE, Jenkins AL, Chu Y, Harkness L. Effect of serving size and addition of sugar on the glycemic response elicited by oatmeal: A randomized, cross-over study. Clin Nutr ESPEN 2016; 16:48-54. [PMID: 28531455 DOI: 10.1016/j.clnesp.2016.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 07/13/2016] [Accepted: 07/22/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND & AIMS We aimed to determine the impact of serving size and addition of sucrose on the glycemic response elicited by oatmeal. METHODS We studied 38 healthy subjects (mean ± SD age 40 ± 12 yr, BMI 26.4 ± 3.6 kg/m2) on 8 separate days using a randomized, cross-over design. Capillary blood-glucose responses over 2hr after consuming 30, 40 and 60 g Classic Quaker Quick Oats (18, 24 and 36 g available-carbohydrate [avCHO], respectively) and 30 g Oats plus 9 g sucrose (27 g avCHO) were compared with those after avCHO-matched servings of Cream of Rice cereal (Control) (22, 29, 44 and 33 g cereal, respectively). Blood-glucose incremental area under the curve (iAUC), peak-rise, rate-of-decline, time-to-peak and time-to-baseline were calculated. RESULTS As serving size increased, iAUC, peak-rise, rate-of-decline and time-to-baseline increased significantly for both cereals, but the rate of increase was significantly greater for Control than for Oats. Time-to-peak increased significantly with serving size only for Oats. Compared to avCHO-matched servings of Control, mean (95%CI) iAUC, peak-rise and rate-of-decline, respectively were 22 (16, 27)%, 22 (19, 26)% and 23 (18, 27)% lower after consuming Oats without sucrose and 26 (18, 34)%, 14 (9, 20)% and 16 (9, 24)% lower after consuming Oats plus sucrose. CONCLUSIONS Oatmeal elicited a significantly lower glycemic response than avCHO-matched servings of Cream of Rice, even when sucrose was added to the oatmeal. Measures of glycemic response tended to increase with increased serving size; although the pattern of change varied between cereal types. These results suggest that oatmeal may be a good choice for minimizing postprandial glycemia. CLINICAL TRIAL REGISTRY ClinicalTrials.gov (NCT02506972).
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Affiliation(s)
- Thomas M S Wolever
- Glycemic Index Laboratories, Inc., 20 Victoria St., 3rd Floor, Toronto, Ontario M5C 2N8, Canada.
| | | | - Susan E Spruill
- Applied Statistics and Consulting, 1205 Chestnut Mountain Rd., Spruce Pine, NC 28277, USA.
| | - Alexandra L Jenkins
- Glycemic Index Laboratories, Inc., 20 Victoria St., 3rd Floor, Toronto, Ontario M5C 2N8, Canada.
| | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA.
| | - Laura Harkness
- Quaker Oats Center of Excellence, PepsiCo R&D Nutrition, Barrington, IL 60010, USA.
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Liu L, Chu X, Na L, Yuan F, Li Y, Sun C. Decreasing high postprandial stearic acid in impaired fasting glucose by dietary regulation. Eur J Clin Nutr 2016; 70:795-801. [PMID: 26733041 DOI: 10.1038/ejcn.2015.208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 10/15/2015] [Accepted: 10/27/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES The objective of this study was to determine the postprandial change in free fatty acid (FFA) profiles in subjects with impaired fasting glucose (IFG), and to evaluate the effect of low glycemic index (GI) load on postprandial FFA profiles and inflammation. SUBJECTS/METHODS First, 50 IFG and 50 healthy subjects were recruited; and 2 -h postprandial changes in FFA profiles were determined. Second, the 50 IFG subjects then received three different loads: glucose load (GL), high glycemic index (HGI) load and low glycemic index (LGI) load, respectively. FFA profile, glucose, insulin, glucagon-like peptide 1 (GLP-1) and inflammatory biomarkers were assayed at 0, 30, 60, 90 and 120 min. RESULTS Postprandial stearic acid (C18:0) increased compared with baseline in all subjects, whereas the change in postprandial C18:0 was more marked in IFG subjects than in healthy subjects. Compared with subjects who received the GL and HGI load, the area under the curve for insulin, GLP-1, C18:0 and tumor necrosis factor-alpha significantly decreased and adiponectin increased in subjects who received the LGI load. CONCLUSIONS The rise in postprandial C18:0 in IFG subjects was inhibited by LGI load.
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Affiliation(s)
- L Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - X Chu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - L Na
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - F Yuan
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Y Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - C Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
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The Metabolic Effects of Oats Intake in Patients with Type 2 Diabetes: A Systematic Review and Meta-Analysis. Nutrients 2015; 7:10369-87. [PMID: 26690472 PMCID: PMC4690088 DOI: 10.3390/nu7125536] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/11/2015] [Accepted: 11/26/2015] [Indexed: 02/05/2023] Open
Abstract
The present study aimed to comprehensively assess if oats intake is beneficial for diabetic patients. The literature search was conducted in PubMed database up to 23 August 2015. Fourteen controlled trials and two uncontrolled observational studies were included. Compared with the controls, oats intake significantly reduced the concentrations of glycosylated hemoglobin A1c (HbA1c) (MD, −0.42%; 95% CI, −0.61% to −0.23%), fasting blood glucose (FBG) (MD, −0.39 mmol/L; 95% CI, −0.58 to −0.19 mmol/L), total cholesterol (TC) (MD, −0.49 mmol/L; 95% CI, −0.86 to −0.12 mmol/L), low-density lipoprotein cholesterol (LDL-C) (MD, −0.29 mmol/L; 95% CI, −0.48 to −0.09 mmol/L). Oatmeal significantly reduced the acute postprandial glucose and insulin responses compared with the control meal. The present study has revealed a beneficial effect of oats intake on glucose control and lipid profiles in type 2 diabetic patients. Further investigations of oats intake in patients with type 1 diabetes and the safety of oats consumption are required.
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Gangopadhyay N, Hossain MB, Rai DK, Brunton NP. A Review of Extraction and Analysis of Bioactives in Oat and Barley and Scope for Use of Novel Food Processing Technologies. Molecules 2015; 20:10884-909. [PMID: 26076110 PMCID: PMC6272431 DOI: 10.3390/molecules200610884] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/25/2015] [Accepted: 06/05/2015] [Indexed: 01/01/2023] Open
Abstract
Oat and barely are cereal crops mainly used as animal feed and for the purposes of malting and brewing, respectively. Some studies have indicated that consumption of oat and barley rich foods may reduce the risk of some chronic diseases such as coronary heart disease, type II diabetes and cancer. Whilst there is no absolute consensus, some of these benefits may be linked to presence of compounds such as phenolics, vitamin E and β-glucan in these cereals. A number of benefits have also been linked to the lipid component (sterols, fatty acids) and the proteins and bioactive peptides in oats and barley. Since the available evidence is pointing toward the possible health benefits of oat and barley components, a number of authors have examined techniques for recovering them from their native sources. In the present review, we summarise and examine the range of conventional techniques that have been used for the purpose of extraction and detection of these bioactives. In addition, the recent advances in use of novel food processing technologies as a substitute to conventional processes for extraction of bioactives from oats and barley, has been discussed.
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Affiliation(s)
- Nirupama Gangopadhyay
- Department of Food BioSciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
- Food Science and Nutrition, School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.
| | - Mohammad B Hossain
- Department of Food BioSciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
| | - Dilip K Rai
- Department of Food BioSciences, Teagasc Food Research Centre Ashtown, Dublin 15, Ireland.
| | - Nigel P Brunton
- Food Science and Nutrition, School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.
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Martins ZE, Erben M, Gallardo AE, Silva R, Barbosa I, Pinho O, Ferreira IMPLVO. Effect of spent yeast fortification on physical parameters, volatiles and sensorial characteristics of home-made bread. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12818] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zita Emanuela Martins
- LAQV/REQUIMTE; Laboratório de Bromatologia e Hidrologia; Departamento de Ciências Químicas; Faculdade de Farmácia; Universidade do Porto; Porto 4051-401 Portugal
| | - Melina Erben
- Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto; Porto 4200-465 Portugal
- Instituto de Tecnologia de Alimentos; Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santa Fe 2829 (3000) Argentina
| | - Anabella E. Gallardo
- Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto; Porto 4200-465 Portugal
- Instituto de Tecnologia de Alimentos; Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santa Fe 2829 (3000) Argentina
| | - Ricardo Silva
- LAQV/REQUIMTE; Laboratório de Bromatologia e Hidrologia; Departamento de Ciências Químicas; Faculdade de Farmácia; Universidade do Porto; Porto 4051-401 Portugal
| | - Inês Barbosa
- LAQV/REQUIMTE; Laboratório de Bromatologia e Hidrologia; Departamento de Ciências Químicas; Faculdade de Farmácia; Universidade do Porto; Porto 4051-401 Portugal
| | - Olívia Pinho
- LAQV/REQUIMTE; Laboratório de Bromatologia e Hidrologia; Departamento de Ciências Químicas; Faculdade de Farmácia; Universidade do Porto; Porto 4051-401 Portugal
- Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto; Porto 4200-465 Portugal
| | - Isabel M. P. L. V. O. Ferreira
- LAQV/REQUIMTE; Laboratório de Bromatologia e Hidrologia; Departamento de Ciências Químicas; Faculdade de Farmácia; Universidade do Porto; Porto 4051-401 Portugal
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Ulbricht C. An Evidence-Based Systematic Review of Beta-Glucan by the Natural Standard Research Collaboration. J Diet Suppl 2014; 11:361-475. [DOI: 10.3109/09286586.2014.975066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Effects of apple juice-based beverages enriched with dietary fibres and xanthan gum on the glycemic response and appetite sensations in healthy men. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bcdf.2014.06.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Effect of oat intake on glycaemic control and insulin sensitivity: a meta-analysis of randomised controlled trials. Br J Nutr 2014; 112:457-66. [PMID: 24787712 DOI: 10.1017/s0007114514000889] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The present meta-analysis of randomised controlled trials (RCT) aimed to investigate the effect of oat intake on glycaemic control and insulin sensitivity. A literature search was carried out in PubMed, ScienceDirect Online and The Cochrane Library (up to October 2013) for RCT that assessed the effect of oat intake on glucose control and insulin sensitivity. A total of fifteen articles with 673 subjects met the inclusion criteria. A random-effects model was used when the overall pooled studies exhibited significant heterogeneity. Otherwise, a fixed-effects model was used. Compared with controls, oat intake significantly reduced the concentrations of fasting insulin by - 6·29 (95 % CI - 12·32, - 0·27) pmol/l (P= 0·04) and the values of glucose AUC (GAUC; 0-120 min) by - 30·23 (95 % CI - 43·65, - 16·81) min × mmol/l (P< 0·0001). There was a slight decrease in fasting glucose concentrations, glycated Hb concentrations and homeostatic model assessment-insulin resistance values in subjects who consumed oats, but the difference was not significant. In conclusion, oat intake significantly lowers fasting insulin concentrations and GAUC values. To further investigate the effect of oat intake on fasting glucose concentrations, additional long-term and high-quality RCT with a parallel design are required.
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Effects of concentrated arabinoxylan and β-glucan compared with refined wheat and whole grain rye on glucose and appetite in subjects with the metabolic syndrome: a randomized study. Eur J Clin Nutr 2013; 68:84-90. [PMID: 24253758 DOI: 10.1038/ejcn.2013.236] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/30/2013] [Accepted: 10/04/2013] [Indexed: 01/27/2023]
Abstract
BACKGROUND/OBJECTIVES Several studies emphasise that arabinoxylan and β-glucan have more beneficial effects on glucose metabolism than low-dietary fibre (DF) meals. Less attention has been paid to the effects of concentrated DF compared with whole grain. We compared the effects of DF and whole grain on glucose, hormone responses and appetite in subjects with the metabolic syndrome (MetS). SUBJECTS/METHODS Fifteen subjects with MetS participated in this acute, randomised, cross-over intervention study. The test breads provided 50 g of digestible carbohydrate: wheat bread with concentrated arabinoxylan (AX) or β-glucan (BG), rye bread with kernels (RK) and wheat bread (WB) as control. Blood samples were drawn for 270 min to determine glucose, insulin, glucagon-like peptide-1, glucose-dependent insulinotropic peptide (GIP) and ghrelin. Appetite score was addressed every 30 min. Ad libitum energy intake (EI) was measured 270 min after test meals. RESULTS Compared with WB, BG and RK induced lower initial glycaemic responses (P<0.001), whereas AX only reduced the glucose peak value (P<0.001). RK reduced insulin (P<0.001) and GIP responses (P<0.001) compared with the other breads. BG lowered insulin responses more than AX (P<0.001). AX, BG and RK increased satiety feeling (P<0.001) more than WB, but did not differ significantly in terms of subsequent EI (P=0.089). CONCLUSION BG and RK had beneficial impact on the glucose response, whereas AX had only effect on the postprandial glucose peak. The impact of the AX bread was influenced by higher protein content. Whether the metabolic effects of the breads are still present to mixed meals remains to be tested.
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Russell WR, Baka A, Björck I, Delzenne N, Gao D, Griffiths HR, Hadjilucas E, Juvonen K, Lahtinen S, Lansink M, Loon LV, Mykkänen H, östman E, Riccardi G, Vinoy S, Weickert MO. Impact of Diet Composition on Blood Glucose Regulation. Crit Rev Food Sci Nutr 2013; 56:541-90. [DOI: 10.1080/10408398.2013.792772] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wendy R. Russell
- Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen, UK
| | | | - Inger Björck
- Centre for Chemistry and Chemical Engineering, University of Lund, Lund, Sweden
| | - Nathalie Delzenne
- Louvain Drug Research Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Dan Gao
- Department of Diabetes and Metabolic Diseases, Beckman Research Institute of City of Hope, Duarte, California, USA
| | | | - Ellie Hadjilucas
- Coca-Cola Europe, Scientific and Regulatory Affairs Department, Brussels, Belgium
| | - Kristiina Juvonen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | | | - Mirian Lansink
- Danone Research, Centre for Specialised Nutrition, Wageningen, The Netherlands
| | - Luc Van Loon
- Department of Movement Sciences, Maastricht University, Maastricht, The Netherlands
| | - Hannu Mykkänen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Elin östman
- Centre for Chemistry and Chemical Engineering, University of Lund, Lund, Sweden
| | - Gabriele Riccardi
- Department of Clinical and Experimental Medicine, University Federico II, Naples, Italy
| | - Sophie Vinoy
- Kraft Foods, R&D Centre, Nutrition Department, Saclay, France
| | - Martin O. Weickert
- University Hospitals Coventry and Warwickshire and Division of Metabolic and Vascular Health, University of Warwick, Coventry, UK
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de Godoy MRC, Kerr KR, Fahey GC. Alternative dietary fiber sources in companion animal nutrition. Nutrients 2013; 5:3099-117. [PMID: 23925042 PMCID: PMC3775244 DOI: 10.3390/nu5083099] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/08/2013] [Accepted: 07/10/2013] [Indexed: 11/23/2022] Open
Abstract
The US has a pet population of approximately 70 million dogs and 74 million cats. Humans have developed a strong emotional bond with companion animals. As a consequence, pet owners seek ways to improve health, quality of life and longevity of their pets. Advances in canine and feline nutrition have contributed to improved longevity and well-being. Dietary fibers have gained renewed interest in the pet food industry, due to their important role in affecting laxation and stool quality. More recently, because of increased awareness of the beneficial effects of dietary fibers in health, as well as the popularity of functional foods and holistic and natural diets, alternative and novel carbohydrates have become widespread in human and pet nutrition. Fiber sources from cereal grains, whole grains and fruits have received increasing attention by the pet food industry and pet owners. While limited scientific information is available on the nutritional and nutraceutical properties of alternative fiber sources, studies indicate that corn fiber is an efficacious fiber source for pets, showing no detrimental effects on palatability or nutrient digestibility, while lowering the glycemic response in adult dogs. Fruit fiber and pomaces have good water-binding properties, which may be advantageous in wet pet food production, where a greater water content is required, along with low water activity and a firm texture of the final product. Rice bran is a palatable fiber source for dogs and may be an economical alternative to prebiotic supplementation of pet foods. However, it increases the dietary requirement of taurine in cats. Barley up to 40% in a dry extruded diet is well tolerated by adult dogs. In addition, consumption of complex carbohydrates has shown a protective effect on cardiovascular disease and oxidative stress. Alternative fiber sources are suitable ingredients for pet foods. They have been shown to be nutritionally adequate and to have potential nutraceutical properties.
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Affiliation(s)
- Maria R C de Godoy
- Department of Animal Sciences, University of Illinois, 1207 W Gregory Drive, Urbana, IL 61801, USA.
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Cloetens L, Ulmius M, Johansson-Persson A, Akesson B, Onning G. Role of dietary beta-glucans in the prevention of the metabolic syndrome. Nutr Rev 2012; 70:444-58. [PMID: 22835138 DOI: 10.1111/j.1753-4887.2012.00494.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The present review examines the evidence regarding the effect of β-glucan on variables linked to the metabolic syndrome (MetS), including appetite control, glucose control, hypertension, and gut microbiota composition. Appetite control can indirectly influence MetS by inducing a decreased energy intake, and promising results for a β-glucan intake to decrease appetite have been found using gut hormone responses and subjective appetite indicators. Beta-glucan also improves the glycemic index of meals and beneficially influences glucose metabolism in patients with type 2 diabetes or MetS, as well as in healthy subjects. Furthermore, a blood-pressure-lowering effect of β-glucan in hypertensive subjects seems fairly well substantiated. The gut microbiota composition might be an interesting target to prevent MetS, and preliminary results indicate the prebiotic potential of β-glucan. The evidence that β-glucan influences appetite control and gut microbiota in a positive way is still insufficient or difficult to interpret, and additional studies are needed in this field. Still, much evidence indicates that increased β-glucan intake could prevent MetS. Such evidence should encourage increased efforts toward the development of β-glucan-containing functional foods and promote the intake of β-glucan-rich foods, with the aim of reducing healthcare costs and disease prevalence.
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Affiliation(s)
- Lieselotte Cloetens
- Biomedical Nutrition, Pure and Applied Biochemistry, Centre for Applied Life Sciences at Lund University, Lund, Sweden.
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Nazare JA, Sauvinet V, Normand S, Guérin-Deremaux L, Gabert L, Désage M, Wils D, Laville M. Impact of a resistant dextrin with a prolonged oxidation pattern on day-long ghrelin profile. J Am Coll Nutr 2011; 30:63-72. [PMID: 21697540 DOI: 10.1080/07315724.2011.10719945] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVES The effects of a new resistant dextrin ingested at breakfast on day-long metabolic parameters and ghrelin profile at subsequent lunch were investigated. METHODS In this randomized, single-blinded, crossover study, 12 healthy men ingested a standardized breakfast with 50 g of NUTRIOSE 10, a resistant dextrin (RD), or of maltodextrin (Malto) and a standardized lunch 5 hours later. Both products (RD and Malto) were derived from corn naturally rich in (13)C to follow their metabolic fate (by using stable isotope analysis). Oxidation and fermentation patterns were assessed by simultaneous (13)CO(2)/H(2) breath testing. The appearance of exogenous (13)C-glucose in plasma, glycemia, insulinemia, nonesterified fatty acids (NEFAs), and ghrelin concentrations were measured for 10 hours following breakfast ingestion. RESULTS With RD, H(2) excretion (fermentation) was significantly enhanced compared with Malto, whereas the appearance of (13)CO(2) (oxidation) was significantly prolonged (p < 0.0001). Following breakfast, ghrelin secretion was significantly less inhibited and NEFA concentration was higher with RD (p < 0.05), but unexpectedly, both remained lower after lunch and up to T600 minutes. According to the reduced bioavailability of RD compared with Malto, the appearance of (13)C-glucose in plasma (p < 0.0001) and glycemic and insulinemic responses to breakfast (p < 0.05) were significantly reduced. CONCLUSIONS Ingestion of this new resistant dextrin at breakfast decreased ghrelin concentrations in response to the subsequent lunch, even if the caloric load ingested at breakfast was lower. This effect may be linked to the prolonged fermentation/oxidation pattern seen in the late postprandial phase (up to 10 hours after ingestion at breakfast), and thus prolonged energy release with the resistant dextrin.
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Affiliation(s)
- Julie-Anne Nazare
- Centre de Recherche en Nutrition Humaine Rhˆone-Alpes, Pierre-Be´nite, Universite´ de Lyon, Lyon, France
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Beta glucan: health benefits in obesity and metabolic syndrome. J Nutr Metab 2011; 2012:851362. [PMID: 22187640 PMCID: PMC3236515 DOI: 10.1155/2012/851362] [Citation(s) in RCA: 215] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 10/27/2011] [Indexed: 12/27/2022] Open
Abstract
Despite the lack of international agreement regarding the definition and classification of fiber, there is established evidence on the role of dietary fibers in obesity and metabolic syndrome. Beta glucan (β-glucan) is a soluble fiber readily available from oat and barley grains that has been gaining interest due to its multiple functional and bioactive properties. Its beneficial role in insulin resistance, dyslipidemia, hypertension, and obesity is being continuously documented. The fermentability of β-glucans and their ability to form highly viscous solutions in the human gut may constitute the basis of their health benefits. Consequently, the applicability of β-glucan as a food ingredient is being widely considered with the dual purposes of increasing the fiber content of food products and enhancing their health properties. Therefore, this paper explores the role of β-glucans in the prevention and treatment of characteristics of the metabolic syndrome, their underlying mechanisms of action, and their potential in food applications.
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Chillo S, Ranawana DV, Pratt M, Henry CJK. Glycemic response and glycemic index of semolina spaghetti enriched with barley β-glucan. Nutrition 2011; 27:653-8. [DOI: 10.1016/j.nut.2010.07.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 07/07/2010] [Accepted: 07/08/2010] [Indexed: 01/01/2023]
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Lattimer JM, Haub MD. Effects of dietary fiber and its components on metabolic health. Nutrients 2010; 2:1266-89. [PMID: 22254008 PMCID: PMC3257631 DOI: 10.3390/nu2121266] [Citation(s) in RCA: 668] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 11/30/2010] [Accepted: 12/07/2010] [Indexed: 12/17/2022] Open
Abstract
Dietary fiber and whole grains contain a unique blend of bioactive components including resistant starches, vitamins, minerals, phytochemicals and antioxidants. As a result, research regarding their potential health benefits has received considerable attention in the last several decades. Epidemiological and clinical studies demonstrate that intake of dietary fiber and whole grain is inversely related to obesity, type two diabetes, cancer and cardiovascular disease (CVD). Defining dietary fiber is a divergent process and is dependent on both nutrition and analytical concepts. The most common and accepted definition is based on nutritional physiology. Generally speaking, dietary fiber is the edible parts of plants, or similar carbohydrates, that are resistant to digestion and absorption in the small intestine. Dietary fiber can be separated into many different fractions. Recent research has begun to isolate these components and determine if increasing their levels in a diet is beneficial to human health. These fractions include arabinoxylan, inulin, pectin, bran, cellulose, β-glucan and resistant starch. The study of these components may give us a better understanding of how and why dietary fiber may decrease the risk for certain diseases. The mechanisms behind the reported effects of dietary fiber on metabolic health are not well established. It is speculated to be a result of changes in intestinal viscosity, nutrient absorption, rate of passage, production of short chain fatty acids and production of gut hormones. Given the inconsistencies reported between studies this review will examine the most up to date data concerning dietary fiber and its effects on metabolic health.
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Affiliation(s)
- James M Lattimer
- Department of Human Nutrition, Kansas State University, Manhattan, KS 66506, USA.
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Effect of postprandial modulation of glucose availability: short- and long-term analysis. Br J Nutr 2009; 103:1461-70. [PMID: 20030904 DOI: 10.1017/s0007114509993357] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Low glycaemic index (LGI) foods have been proposed as potential means to decrease postprandial glucose excursions and thus to improve diabetes management. We modulated glucose availability of cereal products and thus their glycaemic index to study the metabolic effect of LGI foods on daylong glucose control acutely and in the long term following a 5-week GI intervention diet in free-living subjects. In this randomised, parallel trial, two groups of nineteen overweight subjects followed an ad libitum 5-week intervention diet in which usual starch was replaced by either LGI or high GI (HGI) starch. During the exploration days (days 1 and 36), subjects ate their assigned 13C-labelled test breakfast (LGI or HGI), and total and exogenous glucose kinetics (using stable isotopes), postprandial concentrations of glucose, insulin, lipid profile and nutrient oxidation were assessed after the test breakfast and a standardised lunch. At day 1, LGI breakfast significantly decreased post-breakfast glycaemic response with a parallel decrease in exogenous and total glucose appearance (P < 0.05). Post-lunch and post-breakfast glycaemic responses were positively correlated (r 0.79, P < 0.0001). Following the 5-week diet, difference between the groups in terms of glucose kinetics and response was maintained (no significant interaction group x time) but tended to decrease over time for the post-breakfast glycaemic response. Post-lunch and post-breakfast glycaemic responses remained positively correlated (r 0.47, P = 0.004). Modulation of postprandial glucose availability at breakfast decreased plasma exogenous glucose appearance and improved glucose control at the subsequent lunch. After 5 weeks, these effects were maintained in healthy subjects but remained to be confirmed in the longer term.
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Sauvinet V, Gabert L, Qin D, Louche-Pélissier C, Laville M, Désage M. Validation of pentaacetylaldononitrile derivative for dual 2H gas chromatography/mass spectrometry and 13C gas chromatography/combustion/isotope ratio mass spectrometry analysis of glucose. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2009; 23:3855-3867. [PMID: 19904737 DOI: 10.1002/rcm.4294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A reference method to accurately define kinetics in response to the ingestion of glucose in terms of total, exogenous and endogenous glucose is to use stable-isotope-labelled compounds such as 2H and 13C glucose followed by gas chromatography/mass spectrometry (GC/MS) and gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS) analysis. The use of the usual pentaacetyl (5Ac) derivative generates difficulties in obtaining accurate and reproducible results due to the two chromatographic peaks for the syn and anti isomers, and to the isotopic effect occurring during acetylation. Therefore, the pentaacetylaldononitrile derivative (Aldo) was validated for both isotopes, and compared with the 5Ac derivative. A correction factor including carbon atom dilution (stoichiometric equation) and the kinetic isotopic effect (KIE) was determined. Analytical validation results for the 2H GC/MS and 13C GC/C/IRMS measurements produced acceptable results with both derivatives. When 2H enrichments of plasma samples were < or = 1 mol % excess (MPE), the repeatability (RSD(Aldo Intra assay and Intra day) <0.94%, RSD(5Ac Intra assay and Intra day) <3.29%), accuracy (Aldo <3.4%, 5Ac <29.0%), and stability of the derivatized samples were significantly better when the Aldo derivatives of the plasma samples were used (p < 0.05). When the glucose kinetics were assessed in nine human subjects, after glucose ingestion, the plasma glucose 2H enrichments were identical with both derivatives, whereas the 13C enrichments needed a correction factor to fit together. Due to KIE variation, this correction factor was not constant and had to be calculated for each batch of analyses, to obtain satisfactory results. Mean quantities of exogenous glucose exhibit marked difference (20.9 +/- 1.3g (5Ac) vs. 26.7 +/- 2.5g (Aldo)) when calculated with stoichiometric correction, but fit perfectly when calculated after application of the correction factor (22.1 +/- 1.3g (5Ac) vs. 22.9 +/- 1.9g (Aldo)). Finally, the pentaacetylaldononitrile derivative, used here in GC/C/IRMS for the first time, enables measurement of 2H and 13C enrichments in plasma glucose with a single sample preparation.
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Affiliation(s)
- Valérie Sauvinet
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, F-69310 Pierre Bénite, France
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A controlled study of consumption of β-glucan-enriched soups for 2 months by type 2 diabetic free-living subjects. Br J Nutr 2009; 103:422-8. [DOI: 10.1017/s0007114509991875] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Type 2 diabetes is associated with a higher cardiovascular risk and there has been a growing interest in using dietary intervention to improve lipid profile and glucose control. The present work aims at analysing the effects of the enrichment of a normal diet with β-glucan (3·5 g/d) in free-living type 2 diabetic subjects for 2 months, using a palatable soup. This trial was a parallel, placebo-controlled, double-blinded randomised study performed in fifty-three type 2 diabetic subjects. During a 3-week run-in period, subjects daily consumed a ready meal control soup (without β-glucan). For the following 8 weeks, subjects were randomly assigned to consume daily either a control soup or a β-glucan soup. Changes in lipid profile (total cholesterol (TC), HDL- and LDL-cholesterol (HDLc and LDLc), apo B and TAG) and in glucose control (HbA1c and fasting glucose) were measured. There was no significant alteration in lipid profile in the two groups (TC, HDLc, LDLc and apo B). TAG decreased significantly in the β-glucan group compared with the control group ( − 0·12 (sd0·38)v. 0·12 (sd0·44) mmol/l,P = 0·03). HbA1c and fasting glucose were not reduced in any group. A single daily ingestion of 3·5 g β-glucan, as required by official dietary recommendations, for 8 weeks did not change the lipid profile and HbA1c in type 2 diabetic subjects. To improve the metabolic profile of type 2 diabetic subjects in the long term, the quantity, the food vectors and the tolerability of β-glucan products may be re-evaluated.
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