357 results on '"refined-grain diet"'
Search Results
2. A Whole-Grain Diet Improves Whole-Body Protein Turnover Compared to a Macronutrient-Matched Refined-Grain Diet in Adults with Overweight/Obesity
- Author
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Mey, Jacob and Kirwan, John
- Published
- 2020
- Full Text
- View/download PDF
3. Whole-Grain Diet Increases Whole-Body Protein Balance Compared with a Macronutrient-Matched Refined-Grain Diet.
- Author
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Mey, Jacob T, Godin, Jean-Philippe, Scelsi, Amanda R, Kullman, Emily L, Malin, Steven K, Yang, Shengping, Floyd, Z Elizabeth, Poulev, Alexander, Fielding, Roger A, Ross, Alastair B, and Kirwan, John P
- Subjects
- *
WHOLE grain foods , *DIET , *OLDER people , *WALKING speed , *PROTEIN metabolism , *PROTEIN synthesis , *MUSCLE growth , *MUSCLE mass - Abstract
Background There are limited data from randomized control trials to support or refute the contention that whole-grains can enhance protein metabolism in humans. Objectives To examine: 1) the clinical effects of a whole-grain diet on whole-body protein turnover; 2) the cellular effects of whole-grains on protein synthesis in skeletal muscle cells; and 3) the population effects of whole-grain intake on age-related muscle loss. Methods Adults with overweight/obesity (n = 14; age = 40 ± 7 y; BMI = 33 ± 5 kg/m2) were recruited into a crossover, randomized controlled trial (NCT01411540) in which isocaloric, macronutrient-matched whole-grain and refined-grain diets were fully provisioned for two 8-wk periods. Diets differed only in the presence of whole-grains (50 g/1000 kcal). Whole-body protein kinetics were assessed at baseline and after each diet in the fasted-state (13C-leucine) and integrated over 24 h (15N-glycine). In vitro studies using C2C12 cells assessed global protein synthesis by surface sensing of translation and anabolic signaling by Western blot. Complementary epidemiological assessments using the NHANES database assessed the effect of whole-grain intake on muscle function assessed by gait speed in older adults (n = 2783). Results Integrated 24-h net protein balance was 3-fold higher on a whole-grain diet compared with a refined-grain diet (P = 0.04). A whole-grain wheat extract increased submaximal rates of global protein synthesis (27%, P < 0.05) in vitro. In a large sample of older adults, whole-grain intake was associated with greater muscle function (OR = 0.92; 95% CI: 0.86, 0.98). Conclusions Consuming 50 g/1000 kcal whole-grains per day promotes greater protein turnover and enhances net protein balance in adults. Whole-grains impact skeletal muscle at the cellular level, and are associated with greater muscle function in older adults. Collectively, these data point to a new mechanism whereby whole-grain consumption favorably enhances protein turnover and improves health outcomes. This clinical trial is registered on clinicaltrials.gov (identifier: NCT01411540). [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. A whole-grain cereal-rich diet increases plasma betaine, and tends to decrease total and LDL-cholesterol compared with a refined-grain diet in healthy subjects
- Author
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Ross, Alastair B., Bruce, Stephen J., Blondel-Lubrano, Anny, Oguey-Araymon, Sylviane, Beaumont, Maurice, Bourgeois, Alexandre, Nielsen-Moennoz, Corine, Vigo, Mario, Fay, Laurent-Bernard, Kochhar, Sunil, Bibiloni, Rodrigo, Pittet, Anne-Cécile, Emady-Azar, Shahram, Grathwohl, Dominik, Rezzi, Serge, Ross, Alastair B., Bruce, Stephen J., Blondel-Lubrano, Anny, Oguey-Araymon, Sylviane, Beaumont, Maurice, Bourgeois, Alexandre, Nielsen-Moennoz, Corine, Vigo, Mario, Fay, Laurent-Bernard, Kochhar, Sunil, Bibiloni, Rodrigo, Pittet, Anne-Cécile, Emady-Azar, Shahram, Grathwohl, Dominik, and Rezzi, Serge
- Abstract
Epidemiological studies have repeatedly found that whole-grain (WG) cereal foods reduce the risk of several lifestyle-related diseases, though consistent clinical outcomes and mechanisms are elusive. To compare the effects of a WG-rich diet with a matched refined-grain (RG) diet on plasma biomarkers and bowel health parameters, seventeen healthy subjects (eleven females and six males) completed an exploratory cross-over study with a 2-week intervention diet based on either WG- or RG-based foods, separated by a washout of at least 5 weeks. Both diets were the same except for the use of WG (150g/d) or RG foods. Subjects undertook a 4h postprandial challenge on day 8 of each intervention diet. After 2 weeks, the WG diet tended to decrease plasma total and LDL-cholesterol (both P=0·09), but did not change plasma HDL-cholesterol, fasting glucose, C-reactive protein or homocysteine compared with the RG diet. Plasma betaine and alkylresorcinol concentrations were elevated after 1 week of the WG diet (P=0·01 and P<0·0001, respectively). Clostridium leptum populations in faeces were increased after the WG diet, along with a trend for decreased faecal water pH (P=0·096) and increased stool frequency (P<0·0001) compared with the RG diet. A short controlled intervention trial with a variety of commercially available WG-based products tended to improve biomarkers of CVD compared with a RG diet. Changes in faecal microbiota related to increased fibre fermentation and increased plasma betaine concentrations point to both fibre and phytochemical components of WG being important in mediating any potential health effects
- Published
- 2017
5. A Whole-Grain Diet Improves Whole-Body Protein Turnover Compared to a Macronutrient-Matched Refined-Grain Diet in Adults with Overweight/Obesity
- Author
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John P. Kirwan and Jacob T. Mey
- Subjects
Nutrition and Dietetics ,Calorie ,Overweight obesity ,Protein turnover ,Protein metabolism ,Medicine (miscellaneous) ,Overweight ,Biology ,medicine.disease ,Obesity ,Whole grains ,chemistry.chemical_compound ,Animal science ,chemistry ,Weight loss ,medicine ,medicine.symptom ,Food Science - Abstract
OBJECTIVES: We investigated the effect of consuming a whole-grain diet on whole-body protein metabolism compared to a macronutrient-matched refined-grain diet in adults with overweight/obesity using labelled amino acids (ClinicalTrials.gov Identifier: NCT01411540). METHODS: We conducted a randomized, controlled crossover trial in 14 adults with overweight/obesity (age: 40 ± 7 yrs, BMI: 33 ± 5 kg/m(2)) in which isocaloric, macronutrient-matched whole-grain (WG) and refined-grain (RG) diets were fully provided for two 8-week periods (with a 10-week washout period). Diets differed only in the inclusion of whole grains (50 g/1000 kcal). Body composition was measured via DEXA. Whole-body protein kinetics were assessed before and after each diet in the fasted state (13C-Leucine, primed, constant infusion) and over 24 hours (15N-Glycine, bolus). Protein kinetics were normalized to fat-free mass (FFM). RESULTS: Both diets resulted in mild weight loss (WG: −2.0 ± 2.5 kg; RG: −2.9 ± 3.3 kg; both P = 0.01 compared to baseline). Fasted-state leucine kinetics revealed greater protein synthesis (WG: 205 ± 61 µmol/kgFFM/hr; RG: 178 ± 36 µmol/kgFFM/hr; P = 0.04) and protein breakdown (WG: 235 ± 68 µmol/kgFFM/hr; RG: 203 ± 40 µmol/kgFFM/hr, P = 0.03) on a WG vs RG diet. This resulted in a more negative fasted-state net balance on a WG diet (WG: −30 ± 8 µmol/kg/hr; RG: −25 ± 6 µmol/kg/hr, P = 0.02). In contrast, 24-hour whole-body protein turnover measured by the end-product method (15N-Glycine), revealed greater protein synthesis (WG: 316 ± 135 mg protein/kgFFM/hr; RG: 250 ± 94 mg protein/kgFFM/hr) with no difference in protein breakdown, yielding a more positive 24-hr net balance on a WG diet (WG: 31 ± 21 mg protein/kgFFM/hr; RG: 10 ± 34 mg protein/kgFFM/hr). CONCLUSIONS: A whole-grain diet increases whole-body leucine flux and results in a greater 24-hr net protein balance in adults with overweight/obesity compared to a refined-grain diet. This trial suggests whole-grains have an independent effect on protein metabolism and may benefit adults with overweight/obesity. FUNDING SOURCES: This research was supported by the NIH (UL1 RR024989, T32DK007319 (JPK); T32AT004094 (JTM – trainee)) and an investigator-initiated grant from Nestle (JPK). Nestle Product Technology Center and Cereal Partners Worldwide provided the study meals and foods.
- Published
- 2020
6. Differential Effects of Red Meat/Refined Grain Diet and Dairy/Chicken/Nuts/Whole Grain Diet on Glucose, Insulin and Triglyceride in a Randomized Crossover Study
- Author
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Jennifer B Keogh, Yoona Kim, Peter M. Clifton, Kim, Yonna, Keogh, Jennifer, and Clifton, Peter M
- Subjects
0301 basic medicine ,Dietary Fiber ,Male ,Food Handling ,medicine.medical_treatment ,Sus scrofa ,Type 2 diabetes ,Impaired glucose tolerance ,chemistry.chemical_compound ,meal tolerance test ,0302 clinical medicine ,South Australia ,red meat/refined grain diet ,Nuts ,Food science ,Hypertriglyceridemia ,Meal ,Nutrition and Dietetics ,Cross-Over Studies ,digestive, oral, and skin physiology ,food and beverages ,Bread ,Middle Aged ,Postprandial ,Glycemic index ,postprandial insulin ,Red meat ,Diet, Healthy ,lcsh:Nutrition. Foods and food supply ,Adult ,Risk ,Meat ,Patient Dropouts ,030209 endocrinology & metabolism ,lcsh:TX341-641 ,Biology ,Article ,03 medical and health sciences ,dairy/chicken/nuts/whole grain diet ,postprandial glucose ,Hyperinsulinism ,Glucose Intolerance ,medicine ,Animals ,Humans ,030109 nutrition & dietetics ,Triglyceride ,Insulin ,medicine.disease ,chemistry ,Diabetes Mellitus, Type 2 ,Diet, Western ,Dairy Products ,Chickens ,Food Science - Abstract
Epidemiological studies suggest that a diet high in processed meat, with a high glycemic index is associated with an increased risk of type 2 diabetes. It is not clear if this is due to altered insulin sensitivity or an enhanced postprandial glucose. We aimed to compare the acute metabolic response of two different types of meals after ingestion of the matching diet for four weeks. The study was a randomized, crossover acute meal study. Volunteers consumed either a red meat/refined grain meal or a dairy/chicken/nuts/wholegrain meal after four weeks of the matching diet. After a three-week washout period and four weeks of the alternate diet, they consumed the matching meal. The diets differed with respect to both protein and carbohydrate sources. Blood samples were taken for 180 min for the measurement of glucose, insulin, C-peptide and triglyceride. Fifty-one participants (age: 35.1 15.6 years; body mass index: 27.7 6.9 kg/m2, 17 with normal and 34 with impaired glucose tolerance) completed two meal tests. The area under the curve (p < 0.001) and incremental area under the curve (p = 0.001) for insulin was significantly higher after the red meat/refined grain diet than after the dairy/chicken/nuts/whole grain diet. There was an interaction between meal and glucose tolerance group (p < 0.05) in the area under the curve (AUC) and the incremental area under the curve (iAUC) of glucose; the red meat/refined grain diet increased glucose relative to the dairy/chicken/nuts/whole grain diet only in the normal group (+2.5 mmol/L/3 h). The red meat/refined grain diet increased glucose and insulin responses compared with the dairy/chicken/nuts/whole grain diet. This meal pattern would increase pancreatic stress long term and may account for the increased risk of type 2 diabetes with this diet. Refereed/Peer-reviewed
- Published
- 2016
7. No effect of 14 day consumption of whole grain diet compared to refined grain diet on antioxidant measures in healthy, young subjects: a pilot study
- Author
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Slavin Joanne and Enright Lynda
- Subjects
Nutrition. Foods and food supply ,TX341-641 ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Background Epidemiological evidence supports that a diet high in whole grains is associated with lowered risk of chronic diseases included coronary heart disease, obesity, type 2 diabetes, and some types of cancer. One potential mechanism for the protective properties of whole grains is their antioxidant content. The aim of this study was to compare differences in antioxidant measures when subjects consumed either refined or whole grain diets. Methods Twenty healthy subjects took part in a randomized, crossover dietary intervention study. Subjects consumed either a refined grain or whole grain diet for 14 days and then the other diet for the next 14 days. Male subjects consumed 8 servings of grains per day and female subjects consumed 6 servings of grains per day. Blood and urine samples were collected at the end of each diet. Antioxidant measures included oxygen radical absorbance capacity (ORAC) in blood, and isoprostanes and thiobarbituric acid reactive substances (TBARS) in urine. Results The whole grain diet was significantly higher in dietary fiber, vitamin B6, folate, selenium, copper, zinc, iron, magnesium and cystine compared to the refined grain diet. Despite high intakes of whole grains, no significant differences were seen in any of the antioxidant measures between the refined and whole grain diets. Conclusions No differences in antioxidant measures were found when subjects consumed whole grain diets compared to refined grain diets.
- Published
- 2010
- Full Text
- View/download PDF
8. A Whole-Grain Diet Confers Metabolic Advantages in Glucose Metabolism Compared to a Macronutrient-Matched, Refined-Grain Diet
- Author
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John P. Kirwan, Jean-Philippe Godin, Jacob T. Mey, Alastair B. Ross, and Adithya Hari
- Subjects
medicine.medical_specialty ,Metabolic heterogeneity ,business.industry ,Endocrinology, Diabetes and Metabolism ,Type 2 diabetes ,Overweight ,Carbohydrate metabolism ,medicine.disease ,Crossover study ,Whole grains ,Endocrinology ,Internal medicine ,Internal Medicine ,medicine ,Refined grains ,medicine.symptom ,business ,Glycemic - Abstract
Observational studies suggest diets high in whole grains (WG) may confer metabolic benefits over diets based on refined grains (RG) for overweight/obese individuals, thus preventing the development of type 2 diabetes (T2D). However clinical data have been inconclusive, in part due to metabolic heterogeneity. Therefore, we investigated a WG and RG diet in individuals at high risk (HR) or low risk (LR) of developing T2D based on 1 hour glycemic level during an OGTT (oral glucose tolerance test). We conducted a double-blind randomized crossover trial in 15 overweight/obese adults. Participants were administered a 4 hour, 75g OGTT and stratified as HR or LR of developing T2D (HR: 1 hour OGTT glucose (GLU) ≥155 mg/dl; LR: 1 hour OGTT GLU Disclosure J.T. Mey: None. A. Hari: None. J. Godin: Employee; Self; Nestlé. Employee; Spouse/Partner; Nestlé. A. Ross: None. J.P. Kirwan: None.
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- 2018
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- View/download PDF
9. A Whole-Grain Diet Confers Metabolic Advantages in Glucose Metabolism Compared to a Macronutrient-Matched, Refined-Grain Diet
- Author
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MEY, JACOB T., primary, HARI, ADITHYA, additional, GODIN, JEAN-PHILIPPE, additional, ROSS, ALASTAIR, additional, and KIRWAN, JOHN P., additional
- Published
- 2018
- Full Text
- View/download PDF
10. Effects of a wholegrain-rich diet on markers of colonic fermentation and bowel function and their associations with the gut microbiome: a randomised controlled cross-over trial
- Author
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Nicola Procházková, Naomi Venlet, Mathias L. Hansen, Christian B. Lieberoth, Lars Ove Dragsted, Martin I. Bahl, Tine Rask Licht, Michiel Kleerebezem, Lotte Lauritzen, and Henrik M. Roager
- Subjects
energy harvest ,dietary fibres ,whole-grain diet ,refined-grain diet ,gut microbiota ,colonic transit time ,Nutrition. Foods and food supply ,TX341-641 - Abstract
BackgroundDiets rich in whole grains are associated with health benefits. Yet, it remains unclear whether the benefits are mediated by changes in gut function and fermentation.ObjectiveWe explored the effects of whole-grain vs. refined-grain diets on markers of colonic fermentation and bowel function, as well as their associations with the gut microbiome.MethodsFifty overweight individuals with increased metabolic risk and a high habitual intake of whole grains (~69 g/day) completed a randomised cross-over trial with two 8-week dietary intervention periods comprising a whole-grain diet (≥75 g/day) and a refined-grain diet (
- Published
- 2023
- Full Text
- View/download PDF
11. Differential Effects of Red Meat/Refined Grain Diet and Dairy/Chicken/Nuts/Whole Grain Diet on Glucose, Insulin and Triglyceride in a Randomized Crossover Study.
- Author
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Kim Y, Keogh JB, and Clifton PM
- Subjects
- Adult, Animals, Bread adverse effects, Chickens, Cross-Over Studies, Dairy Products, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 etiology, Diabetes Mellitus, Type 2 prevention & control, Dietary Fiber therapeutic use, Food Handling, Glucose Intolerance blood, Glucose Intolerance physiopathology, Humans, Male, Meat adverse effects, Middle Aged, Nuts, Patient Dropouts, Risk, South Australia epidemiology, Sus scrofa, Diet, Healthy, Diet, Western adverse effects, Glucose Intolerance diet therapy, Hyperinsulinism etiology, Hyperinsulinism prevention & control, Hypertriglyceridemia etiology, Hypertriglyceridemia prevention & control
- Abstract
Epidemiological studies suggest that a diet high in processed meat, with a high glycemic index is associated with an increased risk of type 2 diabetes. It is not clear if this is due to altered insulin sensitivity or an enhanced postprandial glucose. We aimed to compare the acute metabolic response of two different types of meals after ingestion of the matching diet for four weeks. The study was a randomized, crossover acute meal study. Volunteers consumed either a red meat/refined grain meal or a dairy/chicken/nuts/wholegrain meal after four weeks of the matching diet. After a three-week washout period and four weeks of the alternate diet, they consumed the matching meal. The diets differed with respect to both protein and carbohydrate sources. Blood samples were taken for 180 min for the measurement of glucose, insulin, C-peptide and triglyceride. Fifty-one participants (age: 35.1 ± 15.6 years; body mass index: 27.7 ± 6.9 kg/m², 17 with normal and 34 with impaired glucose tolerance) completed two meal tests. The area under the curve ( p < 0.001) and incremental area under the curve ( p = 0.001) for insulin was significantly higher after the red meat/refined grain diet than after the dairy/chicken/nuts/whole grain diet. There was an interaction between meal and glucose tolerance group ( p < 0.05) in the area under the curve (AUC) and the incremental area under the curve (iAUC) of glucose; the red meat/refined grain diet increased glucose relative to the dairy/chicken/nuts/whole grain diet only in the normal group (+2.5 mmol/L/3 h). The red meat/refined grain diet increased glucose and insulin responses compared with the dairy/chicken/nuts/whole grain diet. This meal pattern would increase pancreatic stress long term and may account for the increased risk of type 2 diabetes with this diet., Competing Interests: The authors declare no conflict of interest.
- Published
- 2016
- Full Text
- View/download PDF
12. Differential Effects of Red Meat/Refined Grain Diet and Dairy/Chicken/Nuts/Whole Grain Diet on Glucose, Insulin and Triglyceride in a Randomized Crossover Study.
- Author
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Yoona Kim, Keogh, Jennifer B., and Clifton, Peter M.
- Abstract
Epidemiological studies suggest that a diet high in processed meat, with a high glycemic index is associated with an increased risk of type 2 diabetes. It is not clear if this is due to altered insulin sensitivity or an enhanced postprandial glucose. We aimed to compare the acute metabolic response of two different types of meals after ingestion of the matching diet for four weeks. The study was a randomized, crossover acute meal study. Volunteers consumed either a red meat/refined grain meal or a dairy/chicken/nuts/wholegrain meal after four weeks of the matching diet. After a three-week washout period and four weeks of the alternate diet, they consumed the matching meal. The diets differed with respect to both protein and carbohydrate sources. Blood samples were taken for 180 min for the measurement of glucose, insulin, C-peptide and triglyceride. Fifty-one participants (age: 35.1 ± 15.6 years; body mass index: 27.7 ± 6.9 kg/m², 17 with normal and 34 with impaired glucose tolerance) completed two meal tests. The area under the curve (p < 0.001) and incremental area under the curve (p = 0.001) for insulin was significantly higher after the red meat/refined grain diet than after the dairy/chicken/nuts/whole grain diet. There was an interaction between meal and glucose tolerance group (p < 0.05) in the area under the curve (AUC) and the incremental area under the curve (iAUC) of glucose; the red meat/refined grain diet increased glucose relative to the dairy/chicken/nuts/whole grain diet only in the normal group (+2.5 mmol/L/3 h). The red meat/refined grain diet increased glucose and insulin responses compared with the dairy/chicken/nuts/whole grain diet. This meal pattern would increase pancreatic stress long term and may account for the increased risk of type 2 diabetes with this diet. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
13. No effect of 14 day consumption of whole grain diet compared to refined grain diet on antioxidant measures in healthy, young subjects: a pilot study.
- Author
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Enright, Lynda and Slavin, Joanne
- Subjects
- *
GRAIN , *DIET , *TYPE 2 diabetes , *ANTIOXIDANTS , *ISOPROSTANES , *OXYGEN - Abstract
Background: Epidemiological evidence supports that a diet high in whole grains is associated with lowered risk of chronic diseases included coronary heart disease, obesity, type 2 diabetes, and some types of cancer. One potential mechanism for the protective properties of whole grains is their antioxidant content. The aim of this study was to compare differences in antioxidant measures when subjects consumed either refined or whole grain diets. Methods: Twenty healthy subjects took part in a randomized, crossover dietary intervention study. Subjects consumed either a refined grain or whole grain diet for 14 days and then the other diet for the next 14 days. Male subjects consumed 8 servings of grains per day and female subjects consumed 6 servings of grains per day. Blood and urine samples were collected at the end of each diet. Antioxidant measures included oxygen radical absorbance capacity (ORAC) in blood, and isoprostanes and thiobarbituric acid reactive substances (TBARS) in urine. Results: The whole grain diet was significantly higher in dietary fiber, vitamin B6, folate, selenium, copper, zinc, iron, magnesium and cystine compared to the refined grain diet. Despite high intakes of whole grains, no significant differences were seen in any of the antioxidant measures between the refined and whole grain diets. Conclusions: No differences in antioxidant measures were found when subjects consumed whole grain diets compared to refined grain diets. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
14. A whole-grain cereal-rich diet increases plasma betaine, and tends to decrease total and LDL-cholesterol compared with a refined-grain diet in healthy subjects.
- Author
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Ross AB, Bruce SJ, Blondel-Lubrano A, Oguey-Araymon S, Beaumont M, Bourgeois A, Nielsen-Moennoz C, Vigo M, Fay LB, Kochhar S, Bibiloni R, Pittet AC, Emady-Azar S, Grathwohl D, and Rezzi S
- Subjects
- Adult, Chromatography, High Pressure Liquid, Cross-Over Studies, Female, Humans, Male, Patient Compliance, Reference Values, Tandem Mass Spectrometry, Betaine blood, Cholesterol, LDL blood, Dietary Fiber administration & dosage, Edible Grain
- Abstract
Epidemiological studies have repeatedly found that whole-grain (WG) cereal foods reduce the risk of several lifestyle-related diseases, though consistent clinical outcomes and mechanisms are elusive. To compare the effects of a WG-rich diet with a matched refined-grain (RG) diet on plasma biomarkers and bowel health parameters, seventeen healthy subjects (eleven females and six males) completed an exploratory cross-over study with a 2-week intervention diet based on either WG- or RG-based foods, separated by a washout of at least 5 weeks. Both diets were the same except for the use of WG (150 g/d) or RG foods. Subjects undertook a 4 h postprandial challenge on day 8 of each intervention diet. After 2 weeks, the WG diet tended to decrease plasma total and LDL-cholesterol (both P = 0·09), but did not change plasma HDL-cholesterol, fasting glucose, C-reactive protein or homocysteine compared with the RG diet. Plasma betaine and alkylresorcinol concentrations were elevated after 1 week of the WG diet (P = 0·01 and P < 0·0001, respectively). Clostridium leptum populations in faeces were increased after the WG diet, along with a trend for decreased faecal water pH (P = 0·096) and increased stool frequency (P < 0·0001) compared with the RG diet. A short controlled intervention trial with a variety of commercially available WG-based products tended to improve biomarkers of CVD compared with a RG diet. Changes in faecal microbiota related to increased fibre fermentation and increased plasma betaine concentrations point to both fibre and phytochemical components of WG being important in mediating any potential health effects.
- Published
- 2011
- Full Text
- View/download PDF
15. A whole-grain cereal-rich diet increases plasma betaine, and tends to decrease total and LDL-cholesterol compared with a refined-grain diet in healthy subjects
- Author
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Ross, Alastair B., Bruce, Stephen J., Blondel-Lubrano, Anny, Oguey-Araymon, Sylviane, Beaumont, Maurice, Bourgeois, Alexandre, Nielsen-Moennoz, Corine, Vigo, Mario, Fay, Laurent-Bernard, Kochhar, Sunil, Bibiloni, Rodrigo, Pittet, Anne-Cécile, Emady-Azar, Shahram, Grathwohl, Dominik, Rezzi, Serge, Ross, Alastair B., Bruce, Stephen J., Blondel-Lubrano, Anny, Oguey-Araymon, Sylviane, Beaumont, Maurice, Bourgeois, Alexandre, Nielsen-Moennoz, Corine, Vigo, Mario, Fay, Laurent-Bernard, Kochhar, Sunil, Bibiloni, Rodrigo, Pittet, Anne-Cécile, Emady-Azar, Shahram, Grathwohl, Dominik, and Rezzi, Serge
- Abstract
Epidemiological studies have repeatedly found that whole-grain (WG) cereal foods reduce the risk of several lifestyle-related diseases, though consistent clinical outcomes and mechanisms are elusive. To compare the effects of a WG-rich diet with a matched refined-grain (RG) diet on plasma biomarkers and bowel health parameters, seventeen healthy subjects (eleven females and six males) completed an exploratory cross-over study with a 2-week intervention diet based on either WG- or RG-based foods, separated by a washout of at least 5 weeks. Both diets were the same except for the use of WG (150g/d) or RG foods. Subjects undertook a 4h postprandial challenge on day 8 of each intervention diet. After 2 weeks, the WG diet tended to decrease plasma total and LDL-cholesterol (both P=0·09), but did not change plasma HDL-cholesterol, fasting glucose, C-reactive protein or homocysteine compared with the RG diet. Plasma betaine and alkylresorcinol concentrations were elevated after 1 week of the WG diet (P=0·01 and P<0·0001, respectively). Clostridium leptum populations in faeces were increased after the WG diet, along with a trend for decreased faecal water pH (P=0·096) and increased stool frequency (P<0·0001) compared with the RG diet. A short controlled intervention trial with a variety of commercially available WG-based products tended to improve biomarkers of CVD compared with a RG diet. Changes in faecal microbiota related to increased fibre fermentation and increased plasma betaine concentrations point to both fibre and phytochemical components of WG being important in mediating any potential health effects
16. Effects of a wholegrain-rich diet on markers of colonic fermentation and bowel function and their associations with the gut microbiome:a randomised controlled cross-over trial
- Author
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Procházková, Nicola, Venlet, Naomi, Hansen, Mathias L, Lieberoth, Christian B, Dragsted, Lars Ove, Bahl, Martin I, Licht, Tine Rask, Kleerebezem, Michiel, Lauritzen, Lotte, and Roager, Henrik Munch
- Subjects
Energy harvest ,Dietary fibres ,Refined-grain diet ,Colonic transit time ,Faculty of Science ,Gut microbiota ,Dietary fibers ,Whole-grain diet - Abstract
Bsckground: Diets rich in whole grains are associated with health benefits. Yet, it remains unclear whether the benefits are mediated by changes in gut function and fermentation.Objective: We explored the effects of whole-grain vs. refined-grain diets on markers of colonic fermentation and bowel function, as well as their associations with the gut microbiome.Methods: Fifty overweight individuals with increased metabolic risk and a high habitual intake of whole grains (~69 g/day) completed a randomised cross-over trial with two 8-week dietary intervention periods comprising a whole-grain diet (≥75 g/day) and a refined-grain diet (Results: The whole-grain diet increased the levels of faecal butyrate (p = 0.015) and caproate (p = 0.013) compared to the refined-grain diet. No changes in other faecal SCFA, BCFA or urinary levels of microbial-derived proteolytic markers between the two interventions were observed. Similarly, faecal pH remained unchanged. Faecal pH did however increase (p = 0.030) after the refined-grain diet compared to the baseline. Stool frequency was lower at the end of the refined-grain period compared to the end of the whole-grain diet (p = 0.001). No difference in faecal water content was observed between the intervention periods, however, faecal water content increased following the whole-grain period compared to the baseline (p = 0.007). Dry stool energy density was unaffected by the dietary interventions. Nevertheless, it explained 4.7% of the gut microbiome variation at the end of the refined-grain diet, while faecal pH and colonic transit time explained 4.3 and 5%, respectively. Several butyrate-producers (e.g., Faecalibacterium, Roseburia, Butyriciococcus) were inversely associated with colonic transit time and/or faecal pH, while the mucin-degraders Akkermansia and Ruminococcaceae showed the opposite association. Conclusion: Compared with the refined-grain diet, the whole-grain diet increased faecal butyrate and caproate concentrations as well as stool frequency, emphasising that differences between whole and refined grains affect both colonic fermentation and bowel habits.
- Published
- 2023
- Full Text
- View/download PDF
17. Effects of a wholegrain-rich diet on markers of colonic fermentation and bowel function and their associations with the gut microbiome: a randomised controlled cross-over trial
- Author
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Procházková, Nicola, Venlet, Naomi, Hansen, Mathias L, Lieberoth, Christian B, Dragsted, Lars Ove, Bahl, Martin I, Licht, Tine Rask, Kleerebezem, Michiel, Lauritzen, Lotte, Roager, Henrik Munch, Procházková, Nicola, Venlet, Naomi, Hansen, Mathias L, Lieberoth, Christian B, Dragsted, Lars Ove, Bahl, Martin I, Licht, Tine Rask, Kleerebezem, Michiel, Lauritzen, Lotte, and Roager, Henrik Munch
- Abstract
Bsckground: Diets rich in whole grains are associated with health benefits. Yet, it remains unclear whether the benefits are mediated by changes in gut function and fermentation.Objective: We explored the effects of whole-grain vs. refined-grain diets on markers of colonic fermentation and bowel function, as well as their associations with the gut microbiome.Methods: Fifty overweight individuals with increased metabolic risk and a high habitual intake of whole grains (~69 g/day) completed a randomised cross-over trial with two 8-week dietary intervention periods comprising a whole-grain diet (≥75 g/day) and a refined-grain diet (<10 g/day), separated by a washout period of ≥6 weeks. A range of markers of colonic fermentation and bowel function were assessed before and after each intervention.Results: The whole-grain diet increased the levels of faecal butyrate (p = 0.015) and caproate (p = 0.013) compared to the refined-grain diet. No changes in other faecal SCFA, BCFA or urinary levels of microbial-derived proteolytic markers between the two interventions were observed. Similarly, faecal pH remained unchanged. Faecal pH did however increase (p = 0.030) after the refined-grain diet compared to the baseline. Stool frequency was lower at the end of the refined-grain period compared to the end of the whole-grain diet (p = 0.001). No difference in faecal water content was observed between the intervention periods, however, faecal water content increased following the whole-grain period compared to the baseline (p = 0.007). Dry stool energy density was unaffected by the dietary interventions. Nevertheless, it explained 4.7% of the gut microbiome variation at the end of the refined-grain diet, while faecal pH and colonic transit time explained 4.3 and 5%, respectively. Several butyrate-producers (e.g., Faecalibacterium, Roseburia, Butyriciococcus) were inverse
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- 2023
18. In Rats, Whole and Refined Grains Decrease Bone Mineral Density and Content through Modulating Osteoprotegerin and Receptor Activator of Nuclear Factor Kappa B.
- Author
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Sakr, Hussein, Khired, Zenat, and Moghadas, Marzieh
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NF-kappa B ,BONE density ,OSTEOPROTEGERIN ,WHEAT breeding ,BONE remodeling ,ACID phosphatase - Abstract
Wheat is a staple grain in most parts of the world and is also frequently used in livestock feed. The current study looked at the impact of a wheat grain diet on bone turnover markers. Thirty male rats (n = 10) were separated into three groups of ten. The rats in Group 1 were fed a chow diet, while the rats in Group 2 were provided whole grains. The rats in Group 3 were fed refined grains. Each rat's bone mineral content (BMC) and bone mineral density (BMD) were measured after 12 weeks in the tibia of the right hind limb. We also looked at the amounts of bone turnover indicators in the blood. TRAP-5b (Tartrate-resistant acid Phosphatase 5b), NTx (N-telopeptide of type I collagen), DPD (deoxypyridinoline), alkaline phosphatase (ALP), and osteocalcin (OC), as well as the levels of Receptor Activator of Nuclear Factor Kappa B (RANK) and osteoprotegerin (OPG). Rats fed whole and refined grains showed lower BMC and BMD (p < 0.05) than the control group rats. The grain diet resulted in lower OPG, OC, and ALP levels than the chow-fed rats, as well as significantly higher (p < 0.05) levels of RANK, DPD, TRAB 5b, and NTx. In a rat model, an exclusive whole or refined grain diet lowered bone turnover and mass. [ABSTRACT FROM AUTHOR]
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- 2023
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19. Whole grain-rich diet reduces body weight and systemic low-grade inflammation without inducing major changes of the gut microbiome:a randomised cross-over trial
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Roager, Henrik Munch, Vogt, Josef Korbinian, Kristensen, Mette Bredal, Hansen, Lea Benedicte Skov, Ibrügger, Sabine, Mærkedahl, Rasmus Baadsgaard, Bahl, Martin Iain, Lind, Mads Vendelbo, Nielsen, Rikke Linnemann, Frøkiær, Hanne, Gøbel, Rikke Juul, Landberg, Rikard, Ross, Alastair B., Brix, Susanne, Holck, Jesper, Meyer, Anne S., Sparholt, Morten H., Christensen, Anders Fogh, Carvalho, Vera, Hartmann, Bolette, Holst, Jens Juul, Rumessen, Jüri Johannes, Linneberg, Allan René, Sicheritz-Pontén, Thomas, Dalgaard, Marlene D., Blennow, Andreas, Frandsen, Henrik Lauritz, Villas-Bôas, Silas, Kristiansen, Karsten, Vestergaard, Henrik, Hansen, Torben, Ekstrøm, Claus Thorn, Ritz, Christian, Nielsen, Henrik Bjørn, Pedersen, Oluf Borbye, Gupta, Ramneek, Lauritzen, Lotte, Licht, Tine Rask, Roager, Henrik Munch, Vogt, Josef Korbinian, Kristensen, Mette Bredal, Hansen, Lea Benedicte Skov, Ibrügger, Sabine, Mærkedahl, Rasmus Baadsgaard, Bahl, Martin Iain, Lind, Mads Vendelbo, Nielsen, Rikke Linnemann, Frøkiær, Hanne, Gøbel, Rikke Juul, Landberg, Rikard, Ross, Alastair B., Brix, Susanne, Holck, Jesper, Meyer, Anne S., Sparholt, Morten H., Christensen, Anders Fogh, Carvalho, Vera, Hartmann, Bolette, Holst, Jens Juul, Rumessen, Jüri Johannes, Linneberg, Allan René, Sicheritz-Pontén, Thomas, Dalgaard, Marlene D., Blennow, Andreas, Frandsen, Henrik Lauritz, Villas-Bôas, Silas, Kristiansen, Karsten, Vestergaard, Henrik, Hansen, Torben, Ekstrøm, Claus Thorn, Ritz, Christian, Nielsen, Henrik Bjørn, Pedersen, Oluf Borbye, Gupta, Ramneek, Lauritzen, Lotte, and Licht, Tine Rask
- Abstract
Objective: To investigate whether a whole grain diet alters the gut microbiome and insulin sensitivity, as well as biomarkers of metabolic health and gut functionality.Design: 60 Danish adults at risk of developing metabolic syndrome were included in a randomised cross-over trial with two 8-week dietary intervention periods comprising whole grain diet and refined grain diet, separated by a washout period of ≥6 weeks. The response to the interventions on the gut microbiome composition and insulin sensitivity as well on measures of glucose and lipid metabolism, gut functionality, inflammatory markers, anthropometry and urine metabolomics were assessed.Results: 50 participants completed both periods with a whole grain intake of 179±50 g/day and 13±10 g/day in the whole grain and refined grain period, respectively. Compliance was confirmed by a difference in plasma alkylresorcinols (p<0.0001). Compared with refined grain, whole grain did not significantly alter glucose homeostasis and did not induce major changes in the faecal microbiome. Also, breath hydrogen levels, plasma short-chain fatty acids, intestinal integrity and intestinal transit time were not affected. The whole grain diet did, however, compared with the refined grain diet, decrease body weight (p<0.0001), serum inflammatory markers, interleukin (IL)-6 (p=0.009) and C-reactive protein (p=0.003). The reduction in body weight was consistent with a reduction in energy intake, and IL-6 reduction was associated with the amount of whole grain consumed, in particular with intake of rye.Conclusion: Compared with refined grain diet, whole grain diet did not alter insulin sensitivity and gut microbiome but reduced body weight and systemic low-grade inflammation.Trial Registration Number: NCT 01731366; Results.
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- 2019
20. Whole grain-rich diet reduces body weight and systemic low-grade inflammation without inducing major changes of the gut microbiome: a randomised cross-over trial
- Author
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Roager, Henrik Munch, Vogt, Josef Korbinian, Kristensen, Mette, Hansen, Lea Benedicte S, Ibrügger, Sabine, Mærkedahl, Rasmus B, Bahl, Martin Iain, Lind, Mads Vendelbo, Nielsen, Rikke Linnemann, Frøkiær, Hanne, Gøbel, Rikke Juul, Landberg, Rikard, Ross, Alastair B, Brix, Susanne, Holck, Jesper, Meyer, Anne S., Sparholt, Morten H, Christensen, Anders F, Carvalho, Vera, Holst, Jens Juul, Rumessen, Jüri Johannes, Linneberg, Allan, Sicheritz-Pontén, Thomas, Dalgaard, Marlene Danner, Blennow, Andreas, Frandsen, Henrik Lauritz, Villas-Bôas, Silas Granato, Kristiansen, Karsten, Vestergaard, Henrik, Hansen, Torben, Ekstrøm, Claus T, Ritz, Christian, Nielsen, Henrik Bjørn, Pedersen, Oluf Borbye, Gupta, Ramneek, Lauritzen, Lotte, Licht, Tine Rask, Roager, Henrik Munch, Vogt, Josef Korbinian, Kristensen, Mette, Hansen, Lea Benedicte S, Ibrügger, Sabine, Mærkedahl, Rasmus B, Bahl, Martin Iain, Lind, Mads Vendelbo, Nielsen, Rikke Linnemann, Frøkiær, Hanne, Gøbel, Rikke Juul, Landberg, Rikard, Ross, Alastair B, Brix, Susanne, Holck, Jesper, Meyer, Anne S., Sparholt, Morten H, Christensen, Anders F, Carvalho, Vera, Holst, Jens Juul, Rumessen, Jüri Johannes, Linneberg, Allan, Sicheritz-Pontén, Thomas, Dalgaard, Marlene Danner, Blennow, Andreas, Frandsen, Henrik Lauritz, Villas-Bôas, Silas Granato, Kristiansen, Karsten, Vestergaard, Henrik, Hansen, Torben, Ekstrøm, Claus T, Ritz, Christian, Nielsen, Henrik Bjørn, Pedersen, Oluf Borbye, Gupta, Ramneek, Lauritzen, Lotte, and Licht, Tine Rask
- Abstract
Objective To investigate whether a whole grain diet alters the gut microbiome and insulin sensitivity, as well as biomarkers of metabolic health and gut functionality. Design 60 Danish adults at risk of developing metabolic syndrome were included in a randomised cross-over trial with two 8-week dietary intervention periods comprising whole grain diet and refined grain diet, separated by a washout period of ≥6 weeks. The response to the interventions on the gut microbiome composition and insulin sensitivity as well on measures of glucose and lipid metabolism, gut functionality, inflammatory markers, anthropometry and urine metabolomics were assessed. Results 50 participants completed both periods with a whole grain intake of 179±50 g/day and 13±10 g/day in the whole grain and refined grain period, respectively. Compliance was confirmed by a difference in plasma alkylresorcinols (p<0.0001). Compared with refined grain, whole grain did not significantly alter glucose homeostasis and did not induce major changes in the faecal microbiome. Also, breath hydrogen levels, plasma short-chain fatty acids, intestinal integrity and intestinal transit time were not affected. The whole grain diet did, however, compared with the refined grain diet, decrease body weight (p<0.0001), serum inflammatory markers, interleukin (IL)-6 (p=0.009) and C-reactive protein (p=0.003). The reduction in body weight was consistent with a reduction in energy intake, and IL-6 reduction was associated with the amount of whole grain consumed, in particular with intake of rye. Conclusion Compared with refined grain diet, whole grain diet did not alter insulin sensitivity and gut microbiome but reduced body weight and systemic low-grade inflammation.
- Published
- 2019
21. Whole grain food intake elevates serum enterolactone.
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Jacobs, David R., Pereira, Mark A., Stumpf, Katariina, Pins, Joel J., and Adlercreutz, Herman
- Abstract
Both intake of whole grain and higher levels of serum enterolactone have been related to reduced risk for CHD and some cancers. Because lignans are prevalent in the outer layers of grains, these findings may be related. We carried out a crossover feeding study in which overweight, hyperinsulinaemic, non-diabetic men (n 5) and women (n 6) ate, in random order, wholegrain foods or refined-grain foods in a diet with 30% energy from fat. The dominant whole grain was wheat, followed by oats and rice. All food was supplied by the investigators and each diet lasted for 6 weeks, with an intervening washout period of 6???9 weeks. Serum enterolactone concentrations were higher when eating the wholegrain than the refined-grain diet by 6??2 (within person SE 1??7) nmol/l (P=0??0008). Most of the increase in serum enterolactone when eating the wholegrain diet occurred within 2 weeks, though the serum enterolactone difference between wholegrain and refined-grain diets continued to increase through 6 weeks. Serum enterolactone concentrations can be raised by eating a diet rich in whole grains. [ABSTRACT FROM PUBLISHER]
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- 2002
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22. A whole-grain diet reduces peripheral insulin resistance and improves glucose kinetics in obese adults: A randomized-controlled trial.
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Malin, Steven K., Kullman, Emily L., Scelsi, Amanda R., Haus, Jacob M., Filion, Julianne, Pagadala, Mangesh R., Godin, Jean-Philippe, Kochhar, Sunil, Ross, Alastair B., and Kirwan, John P.
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GRAIN in human nutrition ,INSULIN resistance ,GLUCOSE ,OVERWEIGHT persons ,HEALTH of adults - Abstract
Background Whole-grain intake is associated with lower risk of type 2 diabetes but the mechanisms are unclear. Purpose We tested the hypothesis that a WG diet reduces insulin resistance and improves glucose use in individuals at risk for type 2 diabetes compared with an isocaloric-matched refined-grain diet. Methods A double-blind, randomized, controlled, crossover trial of 14 moderately obese adults (Age, 38 ± 2 y; BMI, 34.0 ± 1.1 kg/m 2 ). Insulin resistance and glucose metabolism was assessed using an oral glucose tolerance test combined with isotopic tracers of [6,6- 2 H 2 ]-glucose and [U- 13 C]-glucose, and indirect calorimetry. Peripheral and hepatic insulin resistance was assessed as 1/(rate of disposal/insulin), and endogenous glucose rates of appearance (R a ) iAUC 60–240 × insulin iAUC 60–240 , respectively. Both diets met ADA nutritional guidelines and contained either whole-grain (50 g per 1000 kcal) or equivalent refined-grain. All food was provided for 8 wk. with an 8–10 wk. washout period between diets. Results Post-prandial glucose tolerance, peripheral insulin sensitivity, and metabolic flexibility (insulin-stimulated – fasting carbohydrate oxidation) improvements were greater after whole-grain compared to the refined-grain diet (P < 0.05). Compared to baseline, body fat (~2 kg) and hepatic R a insulin resistance was reduced by both diets, while fasting glucose and exogenous glucose-meal were unchanged after both interventions. Changes in peripheral insulin resistance and metabolic flexibility correlated with improved glucose tolerance (P < 0.05). Conclusion Whole-grains reduced diabetes risk and the mechanisms appear to work through reduced post-prandial blood glucose and peripheral insulin resistance that were statistically linked to enhanced metabolic flexibility. [ABSTRACT FROM AUTHOR]
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- 2018
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23. Urinary alkylresorcinol metabolites, biomarkers of whole grain wheat and rye intake, are beneficially associated with liver fat and other fat measures.
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Sun, Zisuo, Shao, Yaling, Zhang, Xiaoyu, Zhou, Zhihao, Ye, Shu, Liu, Mengfei, Lv, Yaning, Xie, Shaoyu, Cao, Hongjun, Zhang, Zhuang, and Yang, Wanshui
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- 2024
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24. Association between dietary macronutrient composition and plasma one-carbon metabolites and B-vitamin cofactors in patients with stable angina pectoris.
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Bråtveit, Marianne, Van Parys, Anthea, Olsen, Thomas, Strand, Elin, Marienborg, Ingvild, Laupsa-Borge, Johnny, Haugsgjerd, Teresa Risan, McCann, Adrian, Dhar, Indu, Ueland, Per Magne, Dierkes, Jutta, Dankel, Simon Nitter, Nygård, Ottar Kjell, and Lysne, Vegard
- Subjects
ANGINA pectoris ,RISK assessment ,CROSS-sectional method ,HOMOCYSTEINE ,CARBON ,FOLIC acid ,QUESTIONNAIRES ,NUTRITIONAL requirements ,VITAMIN B complex ,CARDIOVASCULAR diseases risk factors ,DESCRIPTIVE statistics ,VITAMIN B12 ,VITAMIN B2 ,DIETARY fats ,METABOLITES ,GAS chromatography ,VITAMIN B6 ,MASS spectrometry ,METABOLOMICS ,DIETARY carbohydrates ,DIETARY proteins ,CONFIDENCE intervals ,DIET ,BIOMARKERS ,ACYCLIC acids ,SATURATED fatty acids - Abstract
Elevated plasma concentrations of several one-carbon metabolites are associated with increased CVD risk. Both diet-induced regulation and dietary content of one-carbon metabolites can influence circulating concentrations of these markers. We cross-sectionally analysed 1928 patients with suspected stable angina pectoris (geometric mean age 61), representing elevated CVD risk, to assess associations between dietary macronutrient composition (FFQ) and plasma one-carbon metabolites and related B-vitamin status markers (GC–MS/MS, LC–MS/MS or microbiological assay). Diet-metabolite associations were modelled on the continuous scale, adjusted for age, sex, BMI, smoking, alcohol and total energy intake. Average (geometric mean (95 % prediction interval)) intake was forty-nine (38, 63) energy percent (E%) from carbohydrate, thirty-one (22, 45) E% from fat and seventeen (12, 22) E% from protein. The strongest associations were seen for higher protein intake, i.e. with higher plasma pyridoxal 5'-phosphate (PLP) (% change (95 % CI) 3·1 (2·1, 4·1)), cobalamin (2·9 (2·1, 3·7)), riboflavin (2·4 (1·1, 3·7)) and folate (2·1 (1·2, 3·1)) and lower total homocysteine (tHcy) (–1·4 (–1·9, −0·9)) and methylmalonic acid (MMA) (–1·4 (–2·0, −0·8)). Substitution analyses replacing MUFA or PUFA with SFA demonstrated higher plasma concentrations of riboflavin (5·0 (0·9, 9·3) and 3·3 (1·1, 5·6)), tHcy (2·3 (0·7, 3·8) and 1·3 (0·5, 2·2)) and MMA (2·0 (0·2, 3·9) and 1·7 (0·7, 2·7)) and lower PLP (–2·5 (–5·3, 0·3) and −2·7 (–4·2, −1·2)). In conclusion, a higher protein intake and replacing saturated with MUFA and PUFA were associated with a more favourable metabolic phenotype regarding metabolites associated with CVD risk. [ABSTRACT FROM AUTHOR]
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- 2024
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25. Effects of whole grains on glycemic control: a systematic review and dose-response meta-analysis of prospective cohort studies and randomized controlled trials.
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Ying, Tao, Zheng, Jianheng, Kan, Juntao, Li, Wenyun, Xue, Kun, Du, Jun, Liu, Yuwei, and He, Gengsheng
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GLYCEMIC control ,TYPE 2 diabetes ,COHORT analysis ,EVIDENCE gaps ,LONGITUDINAL method - Abstract
Purpose: Whole grains have recently been promoted as beneficial to diabetes prevention. However, the evidence for the glycemic benefits of whole grains seems to conflict between the cohort studies and randomized control trials (RCTs). To fill the research gap, we conducted a meta-analysis to determine the effects of whole grains on diabetes prevention and to inform recommendations. Methods: We searched PubMed, Clarivate Web of Science, and Cochrane Library until March 2024. We used the risk ratio (RR) of type 2 diabetes to represent the clinical outcomes for cohort studies, while the biomarkers, including fasting blood glucose and insulin, HbA
1C , and HOMA-IR, were utilized to show outcomes for RCTs. Dose-response relationships between whole grain intakes and outcomes were tested with random effects meta-regression models and restricted cubic splines models. This study is registered with PROSPERO, CRD42021281639. Results: Ten prospective cohort studies and 37 RCTs were included. Cohort studies suggested a 50 g/day whole grain intake reduced the risk of type 2 diabetes (RR = 0.761, 95% CI: 0.700 to 0.828, I2 = 72.39%, P < 0.001) and indicated a monotonic inverse relationship between whole grains and type 2 diabetes rate. In RCTs, whole grains significantly reduced fasting blood glucose (Mean difference (MD) = -0.103 mmol/L, 95% CI: -0.178 to -0.028; I2 = 72.99%, P < 0.01) and had modest effects on HbA1C (MD = -0.662 mmol/mol (-0.06%), 95% CI: -1.335 to 0.010; I2 = 64.55%, P = 0.05) and HOMA-IR (MD = -0.164, 95% CI: -0.342 to 0.013; I2 = 33.38%, P = 0.07). The intake of whole grains and FBG, HbA1C , and HOMA-IR were significantly dose-dependent. The restricted spline curves remained flat up to 150 g/day and decreased afterward. Subgroup analysis showed that interventions with multiple whole-grain types were more effective than those with a single type. Conclusion: Our study findings suggest that a daily intake of more than 150 g of whole grain ingredients is recommended as a population approach for diabetes prevention. [ABSTRACT FROM AUTHOR]- Published
- 2024
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26. Tailored Meal-Type Food Provision for Diabetes Patients Can Improve Routine Blood Glucose Management in Patients with Type 2 Diabetes: A Crossover Study.
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Jung, Dong Hoon, Han, Jae Won, Shin, Hyeri, and Lim, Hee-Sook
- Abstract
This study aimed to determine whether patients with type 2 diabetes can benefit from a meal plan designed based on diabetes management guidelines to improve blood glucose levels. Participants were divided into intervention and control groups. The intervention group consumed a diabetic diet for 2 weeks, while the control group consumed their normal diet. After 2 weeks, the groups switched their dietary regimens. The participants' demographic and clinical characteristics were evaluated, including factors such as blood pressure, blood lipid levels, weight and waist circumference, blood glucose levels (self-monitored and continuously monitored), nutritional status, and blood-based markers of nutrient intake. The dietary intervention group improved waist circumference, body fat percentage, low-density lipoprotein cholesterol, triglyceride levels, and glucose. The energy composition ratio of carbohydrates and proteins changed favorably, and sugar intake decreased. In addition, the proportion of continuous glucose monitoring readings within the range of 180–250 mg/dL was relatively lower in the intervention group than that of the control group. Meals designed based on diabetes management guidelines can improve clinical factors, including stable blood glucose levels in daily life, significantly decrease the carbohydrate energy ratio, and increase the protein energy ratio. This study can help determine the role of dietary interventions in diabetes management and outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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27. Multifunctional dietary interventions, low-grade inflammation and cardiometabolic profile: a scoping review.
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Hornero-Ramirez, Hugo, Aubin, Adrien, Michalski, Marie-Caroline, Vinoy, Sophie, Caussy, Cyrielle, and Nazare, Julie-Anne
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DASH diet ,OMEGA-6 fatty acids ,OMEGA-3 fatty acids ,MEDITERRANEAN diet ,CARDIOVASCULAR diseases - Abstract
Background: Growing evidence highlights the significant impact of diet to modify low-grade inflammation closely linked to cardiometabolic profile. Multifunctionnal diets, combining several compounds have been shown to beneficially impact metabolic parameters. Objective: This study synthesizes the knowledge on the impact of RCTs combining dietary multifunctional compounds on low-grade inflammation in humans. We investigate whether the effects of dietary multifunctional interventions on inflammatory markers were parallel to alterations of cardiometabolic parameters. Methodology: We considered both the integrated dietary interventions (ID, i.e. global diets such as Mediterranean, Nordic ...) and the dietary interventions based on selected bioactive mix (BM) compounds, in healthy individuals and those at cardiometabolic risk. Out of 221 screened publications, we selected 27 studies: 11 for BM (polyphenols and/or omega-3 fatty acids and/or antioxidants and/or dietary fiber) and 16 for ID (Mediterranean, paleo, Nordic, Dietary Approaches to Stop Hypertension (DASH) diet). Results: ID studies reflected significant improvements in inflammatory markers (CRP, IL-6, IL-10, IL-1b), concomitantly with beneficial changes in metabolic parameters. In BM studies, pronounced effects on low-grade inflammatory markers were observed, while improvements in metabolic parameters were not consistent. Both types of studies suggested a favorable impact on oxidative stress, a factor closely linked to the inflammatory profile. Conclusion: Our findings showed that multifunctional RCT diets have differential role in managing low-grade inflammation and cardiometabolic health, with a large heterogeneity in explored inflammatory markers. Further research is imperative to elucidate the link between low-grade inflammation and other cardiometabolic risk factors, such as intestinal inflammation or postprandial inflammatory dynamics, aiming to attain a comprehensive understanding of the mechanisms involved in these processes. These future investigations not only have the potential to deepen our insights into the connections among these elements but also pave the way for significant advancements in the prevention and management of conditions related to the cardiovascular and metabolic systems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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28. Effects of increased wholegrain consumption on immune and inflammatory markers in healthy low habitual wholegrain consumers.
- Author
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Ampatzoglou, Antonios, Williams, Charlotte, Atwal, Kiranjit, Maidens, Catherine, Ross, Alastair, Thielecke, Frank, Jonnalagadda, Satya, Kennedy, Orla, and Yaqoob, Parveen
- Subjects
IMMUNE system physiology ,GLUCOSE metabolism ,SALIVA analysis ,IMMUNOGLOBULIN analysis ,BLOOD coagulation factors ,C-peptide ,C-reactive protein ,CLINICAL trials ,CROSSOVER trials ,GRAIN ,GRANULOCYTES ,INFLAMMATION ,INGESTION ,INSULIN ,INTERLEUKINS ,MONOCYTES ,NUTRITIONAL assessment ,PROBABILITY theory ,QUESTIONNAIRES ,RESEARCH funding ,STATISTICAL sampling ,STATISTICAL hypothesis testing ,STATISTICS ,T cells ,T-test (Statistics) ,PHENOTYPES ,STATISTICAL power analysis ,DATA analysis ,BODY mass index ,RANDOMIZED controlled trials ,FOOD diaries ,DATA analysis software ,DESCRIPTIVE statistics ,LEUKOCYTE count - Abstract
Purpose: Wholegrain (WG) consumption is associated with reduced risk of cardiovascular disease, but clinical data on inflammation and immune function is either conflicting or limited. The objective of this study was to assess the impact of increasing WG consumption to at least 80 g/day on markers of inflammation and glucose metabolism and on phenotypic and functional aspects of the immune system, in healthy, middle-aged adults with low habitual WG intake. Methods: Subjects consumed a diet high in WG (>80 g/day) or low in WG (<16 g/day, refined grain diet) in a crossover study, with 6-week intervention periods, separated by a 4-week washout. Adherence to the dietary regimes was achieved by dietary advice and provision of a range of food products, with compliance verified by analysis of plasma alkylresorcinols (ARs). Results: On the WG intervention, WG consumption reached 168 g/day ( P < 0.001), accompanied by an increase in plasma ARs ( P < 0.001) and fibre intake ( P < 0.001), without affecting other aspects of dietary intake. On the WG arm, there were trends for lower ex vivo activation of CD4 T cells and circulating concentrations of IL-10, C-reactive protein, C-peptide, insulin and plasminogen activator inhibitor-1. The percentage of CD4 central memory T cells and circulating levels of adipsin tended to increase during the WG intervention. Conclusions: Despite the dramatic increase in WG consumption, there were no effects on phenotypic or functional immune parameters, markers of inflammation or metabolic markers. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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29. Editorial: Fruits, vegetables, and biotics for a healthy gut microbiome.
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Gérard, Philippe, Chun Guang Li, and Bhuyan, Deep Jyoti
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- 2024
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30. Alkylresorcinols in adipose tissue biopsies as biomarkers of whole-grain intake: an exploratory study of responsiveness to advised intake over 12 weeks.
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Wu, H., Kolehmainen, M., Mykkänen, H., Poutanen, K., Uusitupa, M., Schwab, U., Wolk, A., and Landberg, R.
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ADIPOSE tissues ,BIOPSY ,COMPARATIVE studies ,DIET ,DIETARY fiber ,FOOD habits ,FOOD handling ,HEALTH behavior ,INGESTION ,RESEARCH methodology ,MEDICAL cooperation ,PHENOLS ,RESEARCH ,WHEAT ,EVALUATION research - Abstract
Background/objectives: Alkylresorcinols (ARs) have been suggested as biomarkers of whole-grain wheat and rye intake. Plasma AR concentrations have a short half-life; hence, long-term biomarkers are needed. This study evaluated the responsiveness of ARs in adipose tissue biopsies as biomarkers after a whole-grain intake intervention.Subjects/methods: Samples and data of 27 participants from a 12-week randomized parallel-group dietary intervention were available. The participants were replacing their habitual diet with a whole-grain-enriched diet (WGDG) or a refined grain diet (RDG) during the intervention. Blood samples and adipose tissue biopsies were collected at baseline and after 12 weeks, and AR concentrations in the plasma and adipose tissues from the participants were compared against estimated whole-grain intake.Results: AR concentrations in the adipose tissue and plasma did not change after 12 weeks in the WGDG group, as no significant increase in whole-grain intake was observed, but was significantly lower than baseline in the RDG group (P<0.05), owing to decreased whole-grain intake in this group. Plasma and adipose tissue AR concentrations were significantly higher in the WGDG group than in the RDG group (P<0.05), and were highly correlated with average whole-grain intake estimated by food records (Spearman's r=0.60-0.72 (P<0.05, n=16) for total and individual AR homolog concentrations in the plasma; r=0.60--0.84, (P<0.05, n=16) for total and individual AR homolog concentrations in the adipose tissue).Conclusions: In this small pilot study, AR concentrations in adipose tissue responded to reduced intake of whole grain over 12 weeks. Although not significantly different from plasma AR, adipose tissue AR concentrations were highly correlated with whole-grain intake after a 12-week intervention. These results show that adipose tissue AR concentrations have promise as biomarkers of whole-grain wheat and rye intake. Larger studies are needed to evaluate whether they are better long-term biomarkers than AR in the plasma. [ABSTRACT FROM AUTHOR]- Published
- 2015
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31. Dietary assessment of type 2 diabetic patients using healthful plant-based diet score in the Eastern Province of Saudi Arabia.
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Alali, Rudaynah A., Alateeq, Suad A., Almuhanna, Afnan F., Al Elq, Abdulmohsen H., Albaker, Waleed I., Habara, Alawi, Alrubaish, Fatima A., Vatte, Chittibabu, Loza, Bao-Li, Al-Muhanna, Fahad A., and Al-Ali, Amein K.
- Subjects
PLANT-based diet ,CLINICS ,PEOPLE with diabetes ,HIGH density lipoproteins ,SAUDI Arabians ,PERIPHERAL vascular diseases ,DIABETIC foot - Abstract
Background: Diabetes mellitus is a chronic disease characterized by a wide range of metabolic problems. The current study sought to assess nutritional habits of Saudi patients with type 2 diabetes (T2D) and to propose recommendations to improve these patients' dietary habits and delay possible disease complications. Methods: Over a period of three years, (2017–2019) 577 patients with T2D attending the outpatient's diabetic clinics at King Fahd Hospital of the University, Al Khobar, Saudi Arabia were invited to participate in this study. Data of dietary intake were collected by trained nurses using a pretested structured validated semi quantitative food frequency questionnaire. The dietary data were collected using 7-day dietary recall questionnaire. A modified score system that associates dietary habits with glycemic control and lipid profile was used. Results: Overall, a high healthful plant-based diet score was associated with a significant (P = 0.018) reduction in triglycerides (TG) level (mean difference − 3.78%; 95% CI, -0.65% to -6.81%) and a statistically non-significant (P = 0.06) increase in high density lipoprotein (HDL) levels (mean difference 1.87%; 95% CI -0.06–3.84%) in T2D patients from the Eastern Province of Saudi Arabia. Additionally, in our patient group, the prevalence of coronary artery disease, stroke, peripheral artery disease, and chronic kidney disease in T2D patients was 11.3%, 6.2%, 3.3%, and 8.4%, respectively and were higher when compared to the prevalence in the general population. Conclusion: The present study showed that adherence to a healthful plant-based diet, when compared to high glycemic index diet, is associated with a favorable outcome in glycemic control and lipid profile in T2D patients. Prior assessment of total diet quality may be beneficial when giving nutritional advice to T2D patients with the possibility of improving glycemic control and lipid profile. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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32. Gut Microbiota and Nutrition: Strategies for the Prevention and Treatment of Type 2 Diabetes.
- Author
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Sastre, Maria, Cimbalo, Alessandra, Mañes, Jordi, and Manyes, Lara
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- 2024
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33. Diet quality is associated with adipose tissue and muscle mass: the Coronary Artery Risk Development in Young Adults (CARDIA) study.
- Author
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Isanejad, Masoud, Steffen, Lyn M., Terry, James G., Shikany, James M., Zhou, Xia, So‐YunYi, Jacobs, David R., Carr, John Jeffrey, and Steffen, Brian T.
- Published
- 2024
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34. Enhancing milk quality and modulating rectal microbiota of dairy goats in starch-rich diet: the role of bile acid supplementation.
- Author
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Yin, Qingyan, Yu, Junjian, Li, Jiaxiao, Zhang, Tianci, Wang, Tianyu, Zhu, Yufei, Zhang, Jun, and Yao, Junhu
- Subjects
MILK quality ,GOATS ,BILE acids ,RUMEN fermentation ,SHORT-chain fatty acids ,MONOUNSATURATED fatty acids ,FAT content of milk - Abstract
Background: Diets rich in starch have been shown to increase a risk of reducing milk fat content in dairy goats. While bile acids (BAs) have been used as a lipid emulsifier in monogastric and aquatic animals, their effect on ruminants is not well understood. This study aimed to investigate the impact of BAs supplementation on various aspects of dairy goat physiology, including milk composition, rumen fermentation, gut microbiota, and BA metabolism. Results: We randomly divided eighteen healthy primiparity lactating dairy goats (days in milk = 100 ± 6 d) into two groups and supplemented them with 0 or 4 g/d of BAs undergoing 5 weeks of feeding on a starch-rich diet. The results showed that BAs supplementation positively influenced milk yield and improved the quality of fatty acids in goat milk. BAs supplementation led to a reduction in saturated fatty acids (C16:0) and an increase in monounsaturated fatty acids (cis-9 C18:1), resulting in a healthier milk fatty acid profile. We observed a significant increase in plasma total bile acid concentration while the proportion of rumen short-chain fatty acids was not affected. Furthermore, BAs supplementation induced significant changes in the composition of the gut microbiota, favoring the enrichment of specific bacterial groups and altering the balance of microbial populations. Correlation analysis revealed associations between specific bacterial groups (Bacillus and Christensenellaceae R-7 group) and BA types, suggesting a role for the gut microbiota in BA metabolism. Functional prediction analysis revealed notable changes in pathways associated with lipid metabolism, suggesting that BAs supplementation has the potential to modulate lipid-related processes. Conclusion: These findings highlight the potential benefits of BAs supplementation in enhancing milk production, improving milk quality, and influencing metabolic pathways in dairy goats. Further research is warranted to elucidate the underlying mechanisms and explore the broader implications of these findings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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35. Human gut microbiome: Therapeutic opportunities for metabolic syndrome—Hype or hope?
- Author
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Horvath, Angela, Zukauskaite, Kristina, Hazia, Olha, Balazs, Irina, and Stadlbauer, Vanessa
- Subjects
PREBIOTICS ,METABOLIC syndrome ,HUMAN microbiota ,PROBIOTICS ,GUT microbiome ,METABOLIC disorders ,FECAL microbiota transplantation - Abstract
Shifts in gut microbiome composition and metabolic disorders are associated with one another. Clinical studies and experimental data suggest a causal relationship, making the gut microbiome an attractive therapeutic goal. Diet, intake of probiotics or prebiotics and faecal microbiome transplantation (FMT) are methods to alter a person's microbiome composition. Although FMT may allow establishing a proof of concept to use microbiome modulation to treat metabolic disorders, studies show mixed results regarding the effects on metabolic parameters as well as on the composition of the microbiome. This review summarizes the current knowledge on diet, probiotics, prebiotics and FMT to treat metabolic diseases, focusing on studies that also report alterations in microbiome composition. Furthermore, clinical trial results on the effects of common drugs used to treat metabolic diseases are synopsized to highlight the bidirectional relationship between the microbiome and metabolic diseases. In conclusion, there is clear evidence that microbiome modulation has the potential to influence metabolic diseases; however, it is not possible to distinguish which intervention is the most successful. In addition, a clear commitment from all stakeholders is necessary to move forward in the direction of developing targeted interventions for microbiome modulation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
36. Dietary and lifestyle indices for insulin resistance and nonalcoholic fatty liver disease.
- Author
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Momeni, Aref, Razeghi Jahromi, Soodeh, KazemiJahromi, Mitra, Teymoori, Farshad, Farhadnejad, Hossein, and Haghshenas, Rouhollah
- Subjects
NON-alcoholic fatty liver disease ,INSULIN resistance ,IRANIANS ,INSULIN ,BODY mass index - Abstract
Purpose: The aim of the present study was to investigate the association of the empirical dietary index for insulin resistance (EDIR) and empirical lifestyle index for insulin resistance (ELIR) with the risk of nonalcoholic fatty liver disease (NAFLD) in Iranian adults. Design/methodology/approach: In this case-control study, 120 cases of NAFLD and 240 controls aged ≥20 years were included. NAFLD was detected by a gastroenterologist using an ultrasonography test. The food frequency questionnaire was used to collect nutritional data and determine the score of EDIR in participants. ELIR was determined based on body mass index, physical activity and dietary pattern. The odds ratios (ORs) of NAFLD were reported across tertiles of EDIR and ELIR using a logistic regression test. Findings: The mean±SD age and BMI of subjects were 41.8 ± 7.5 years and 27.4 ± 2.2 kg/m
2 , respectively. In the age and sex-adjusted model, the odds of NAFLD were increased across tertiles of ELIR (OR = 3.00; 95% CI: 1.63–5.55, Ptrend = 0.001). Also, based on the fully adjusted model, the odds of NAFLD were increased according to tertiles of ELIR (OR = 2.66; 95% CI: 1.38–5.10, Ptrend = 0.006). However, no significant association was found between the higher score of EDIR and odds of NAFLD based on the age and sex-adjusted model (OR = 1.18; 95% CI: 0.68–2.05, Ptrend = 0.52) and the multivariable-adjusted model (OR = 0.91; 95% CI: 0.48–1.70, Ptrend = 0.87). Originality/value: To the best of the authors' knowledge, this was the first study to examine the role of the insulinemic potential of diet and lifestyle in predicting NAFLD risk. Our findings suggested that a lifestyle with a higher score of ELIR was positively associated with NAFLD risk. However, a diet with a higher score of EDIR was not related to the odds of NAFLD. [ABSTRACT FROM AUTHOR]- Published
- 2024
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- View/download PDF
37. Effect of whole grains on insulin sensitivity in overweight hyperinsulinemic adults.
- Author
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Pereira, Mark A., Jacobs Jr, David R., Pins, Joel J., Raatz, Susan K., Gross, Myron D., Slavin, Joanne L., and Seaquist, Elizabeth R.
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NUTRITION research ,DIET in disease ,INSULIN resistance ,WHOLE grain foods ,HYPERINSULINISM ,OVERWEIGHT persons ,TYPE 2 diabetes risk factors ,TYPE 2 diabetes -- Nutritional aspects ,HEALTH - Abstract
Background: Epidemiologic studies have found whole-grain intake to be inversely associated with the risk of type 2 diabetes and heart disease. Objective: We tested the hypothesis that whole-grain consumption improves insulin sensitivity in overweight and obese adults. Design: This controlled experiment compared insulin sensitivity between diets (55% carbohydrate, 30% fat) including 6-10 servings/ d of breakfast cereal, bread, rice, pasta, muffins, cookies, and snacks of either whole or refined grains. Total energy needs were estimated to maintain body weight. Eleven overweight or obese [body mass index (in kg/m
2 ): 27-36] hyperinsulinemic adults aged 25-56 y participated in a randomized crossover design. At the end of each 6-wk diet period, the subjects consumed 355 mL (12 oz) of a liquid mixed meal, and blood samples were taken over 2 h. The next day a euglycemic hyperinsulinemic clamp test was administered. Results: Fasting insulin was 10% lower during consumption of the whole-grain than during consumption of the refined-grain diet (mean difference: -15 ± 5.5 pmol/L; P = 0.03). After the whole-grain diet, the area under the 2-h insulin curve tended to be lower (-8832 pmol · min/L; 95% CI: -18 720, 1062) than after the refined-grain diet. The rate of glucose infusion during the final 30 min of the clamp test was higher after the wholegrain diet (0.07 × 10-4 mmol·kg-1 ·min-1 per pmol/L; 95% CI: 0.003 × 10-4 , 0.144 × 10-4 ). Conclusion: Insulin sensitivity may be an important mechanism whereby whole-grain foods reduce the risk of type 2 diabetes and heart disease. [ABSTRACT FROM AUTHOR]- Published
- 2002
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- View/download PDF
38. Circulating bile acids in healthy adults respond differently to a dietary pattern characterized by whole grains, legumes and fruits and vegetables compared to a diet high in refined grains and added sugars: A randomized, controlled, crossover feeding...
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Ginos, Bigina N.R., Navarro, Sandi L., Schwarz, Yvonne, Gu, Haiwei, Wang, Dongfang, Randolph, Timothy W., Shojaie, Ali, Hullar, Meredith A.J., Lampe, Paul D., Kratz, Mario, Neuhouser, Marian L., Raftery, Daniel, and Lampe, Johanna W.
- Subjects
GRAIN ,FARNESOID X receptor ,G protein coupled receptors ,DIET ,FALSE discovery rate - Abstract
Objective The effects of diets high in refined grains on biliary and colonic bile acids have been investigated extensively. However, the effects of diets high in whole versus refined grains on circulating bile acids, which can influence glucose homeostasis and inflammation through activation of farnesoid X receptor (FXR) and G protein-coupled bile acid receptor 1 (TGR5), have not been studied. Materials and Methods We conducted a secondary analysis from a randomized controlled crossover feeding trial ( NCT00622661 ) in 80 healthy adults (40 women/40 men, age 18–45 years) from the greater Seattle Area, half of which were normal weight (BMI 18.5–25.0 kg/m 2 ) and half overweight to obese (BMI 28.0–39.9 kg/m 2 ). Participants consumed two four-week controlled diets in randomized order: 1) a whole grain diet (WG diet), designed to be low in glycemic load (GL), high in whole grains, legumes, and fruits and vegetables, and 2) a refined grain diet (RG diet), designed to be high GL, high in refined grains and added sugars, separated by a four-week washout period. Quantitative targeted analysis of 55 bile acid species in fasting plasma was performed using liquid chromatography tandem mass spectrometry. Concentrations of glucose, insulin, and CRP were measured in fasting serum. Linear mixed models were used to test the effects of diet on bile acid concentrations, and determine the association between plasma bile acid concentrations and HOMA-IR and CRP. Benjamini-Hochberg false discovery rate (FDR) < 0.05 was used to control for multiple testing. Results A total of 29 plasma bile acids were reliably detected and retained for analysis. Taurolithocholic acid (TLCA), taurocholic acid (TCA) and glycocholic acid (GCA) were statistically significantly higher after the WG compared to the RG diet (FDR < 0.05). There were no significant differences by BMI or sex. When evaluating the association of bile acids and HOMA-IR, GCA, taurochenodeoxycholic acid, ursodeoxycholic acid (UDCA), 5β‑cholanic acid‑3β,12α‑diol, 5‑cholanic acid‑3β‑ol, and glycodeoxycholic acid (GDCA) were statistically significantly positively associated with HOMA-IR individually, and as a group, total, 12α‑hydroxylated, primary and secondary bile acids were also significant (FDR < 0.05). When stratifying by BMI, chenodeoxycholic acid (CDCA), cholic acid (CA), UDCA, 5β-cholanic acid-3β, deoxycholic acid, and total, 12α-hydroxylated, primary and secondary bile acid groups were significantly positively associated with HOMA-IR among overweight to obese individuals (FDR < 0.05). When stratifying by sex, GCA, CDCA, TCA, CA, UDCA, GDCA, glycolithocholic acid (GLCA), total, primary, 12α‑hydroxylated, and glycine-conjugated bile acids were significantly associated with HOMA-IR among women, and CDCA, GDCA, and GLCA were significantly associated among men (FDR < 0.05). There were no significant associations between bile acids and CRP. Conclusions Diets with comparable macronutrient and energy composition, but differing in carbohydrate source, affected fasting plasma bile acids differently. Specifically, a diet characterized by whole grains, legumes, and fruits and vegetables compared to a diet high in refined grains and added sugars led to modest increases in concentrations of TLCA, TCA and GCA, ligands for FXR and TGR5, which may have beneficial effects on glucose homeostasis. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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39. TT Genotype of TLR4 rs1928295 Is a Risk Factor of Overweight/Obesity in Han Chinese Children Aged 7–12 Years and Can Interact with Dietary Patterns to Affect the Incidence of Central Obesity and Lipid Profile, Systolic Blood Pressure Levels.
- Author
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Zhu, Qi, Qian, Ben, Xue, Kun, Guo, Hongwei, Liang, Rui, Wu, Jinlong, Wu, Qisu, and Zhou, Geyi
- Abstract
Previous studies have found that TLR4 rs1928295 polymorphism is associated with Body Mass Index in European and American Indian adults. This study evaluates the relationship between this locus polymorphism, obesity-related parameters and dietary patterns in Chinese Han Children. A total of 798 children aged 7–12 years were included in this cross-sectional study. An improved Multiple Ligase Detection Reaction was used for genotyping. Dietary patterns were identified by principal component factor analysis. The overweight/obesity rate of the TT genotype was greater than those of the CC/CT genotype (p = 0.032 and 0.048 in boys and girls, respectively). Boys of the TT genotype could interact with protein and cholesterol intake to increase low density lipoprotein (LDL) levels (p = 0.02, 0.015, respectively), while girls of the TT genotype could interact with total energy intake to increase triglyceride (TG) (p = 0.018) levels. Boys predisposed to a healthy balance dietary pattern (HBDP) and girls predisposed to an egg/fruit/fish dietary pattern (EFDP) were significantly associated with lower rates of central obesity (p = 0.045, 0.028). Boys carrying the TT genotype and predisposed to animal food dietary pattern (AFDP) had a higher level of low-density lipoprotein (p = 0.017) and systolic pressure (p = 0.044). Our results indicated that the TT genotype of TLR4 rs1928295 is a potential risk factor for obesity in Chinese Han children and is associated with dietary patterns. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. Healthy Nordic diet and associations with plasma concentrations of metabolites in the choline oxidation pathway: a cross-sectional study from Northern Sweden.
- Author
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Hesselink, André, Winkvist, Anna, Lindahl, Bernt, Ueland, Per M., Schneede, Jörn, Johansson, Ingegerd, and Karlsson, Therese
- Subjects
BETAINE ,CHOLINE ,METABOLITES ,DIET ,CROSS-sectional method ,TYPE 2 diabetes ,BETA (Finance) - Abstract
Background: The choline oxidation pathway and metabolites involved have been linked to diseases including cardiovascular disease, type 2 diabetes and cancer. A healthy Nordic diet is a recently defined dietary pattern associated with decreased risk for these diseases. Our aim was to explore associations between adherence to a healthy Nordic diet and plasma concentrations of metabolites of the choline oxidation pathway. Methods: The Healthy Nordic Food Index (HNFI) and Baltic Sea Diet Score (BSDS) were applied to cross-sectional data (n = 969) from the Västerbotten Intervention Programme in Northern Sweden to score adherence to a healthy Nordic diet. Data included responses to a dietary questionnaire and blood sample analyses (1991–2008). Associations of diet scores with plasma concentrations of metabolites of the choline oxidation pathway and total homocysteine (tHcy), seven metabolites in total, were evaluated with linear regression, adjusting for age, BMI, education and physical activity. Results: HNFI scores showed linear relationships with plasma choline (β = 0.11), betaine (β = 0.46), serine (β = 0.98) and tHcy (β = − 0.38), and BSDS scores with betaine (β = 0.13) and tHcy (β = − 0.13); unstandardized beta coefficients, all significant at P < 0.05. The regression models predicted changes in plasma metabolite concentrations (± 1 SD changes in diet score) in the range of 1–5% for choline, betaine, serine and tHcy. No other statistically significant associations were observed. Conclusions: A healthy Nordic diet was associated with plasma concentrations of several metabolites of the choline oxidation pathway. Although relationships were statistically significant, effect sizes were moderate. Further research is warranted to explore the underlying mechanisms and associations with health outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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41. The Risk of Breast Cancer between Western and Mediterranean Dietary Patterns.
- Author
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Tsai, Hsueh-Han, Yu, Jyh-Cherng, Hsu, Huan-Ming, Chu, Chi-Hong, Chang, Tzu-Ming, Hong, Zhi-Jie, Feng, An-Chieh, Fu, Chun-Yu, Hsu, Kuo-Feng, Dai, Ming-Shen, and Liao, Guo-Shiou
- Abstract
Breast cancer is a significant public health problem globally and prevention strategies have become of great interest as its incidence rises. Exploring the connection between dietary patterns and the reduction of breast cancer risk is considered a promising approach. High levels of fiber, phytochemicals, a good antioxidant profile, and a composition of advantageous fatty acids are characteristics of healthy dietary programs such as the Mediterranean diet. This review summarized and discussed the active compounds that are considered important in preventing breast cancer, including dietary components from recent related reports. These include polyunsaturated fatty acids, fiber, phytochemicals, and alcohol. Although the exact mechanism for preventing breast cancer using these dietary factors is not well understood, the combination of all the elements in a healthy diet plays a role in reducing breast cancer risk. Considering the elevated probability of breast cancer relapse and mortality, it is crucial to investigate the correlation between a nutritious dietary pattern and breast cancer, while identifying bioactive components that have the potential to mitigate the risk of breast cancer incidence. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
42. Non-Classical Aspects of Obesity Pathogenesis and Their Relative Clinical Importance for Obesity Treatment.
- Author
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Samakidou, Georgia E., Koliaki, Chrysi C., Liberopoulos, Evangelos N., and Katsilambros, Nikolaos L.
- Subjects
OBESITY risk factors ,OBESITY treatment ,OBESITY ,NON-communicable diseases ,SEDENTARY lifestyles ,FOOD habits ,SLEEP quality ,LIGHTING ,MEDITERRANEAN diet ,PSYCHIATRIC drugs ,FOOD consumption ,MICROPLASTICS ,NUTRITIONAL requirements ,LOW-carbohydrate diet ,INTERMITTENT fasting ,LOW-fat diet ,DASH diet ,GRAIN ,ENDOCRINE disruptors ,POLLUTION ,NUTS ,ADIPOSE tissues ,DISEASE risk factors - Abstract
Obesity is a chronic disease and a major public health problem due to its association with non-communicable diseases and all-cause mortality. An increased energy intake and decreased physical activity have been long recognized as the classical parameters that contribute to the development of obesity. However, several other, non-classical factors have also been associated with obesity through various complex mechanisms. Some of them are diet related, such as diet quality, dietary habits and speed of eating. Other factors are non-dietary, such as endocrine-disrupting chemicals, sleep quality and quantity, psychotropic medications and light at night. The scope of the present narrative review is to address these non-classical factors that are implicated in the pathogenesis of obesity, to clarify their potential role in the management of obesity and, where possible, to provide some practical clinical recommendations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. Effects of whole grain intake on glucagon-like peptide 1 and glucose-dependent insulinotropic peptide: a systematic review and meta-analysis.
- Author
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Hassanzadeh-Rostami, Zahra, Ghobadi, Saeed, and Faghih, Shiva
- Subjects
ONLINE information services ,META-analysis ,CONFIDENCE intervals ,FOOD consumption ,GLUCAGON-like peptide 1 ,SYSTEMATIC reviews ,BLOOD sugar ,DESCRIPTIVE statistics ,GRAIN ,NATURAL foods ,PEPTIDE hormones ,MEDLINE - Abstract
Context Whole grain intake may control help glycemia and reduce food intake by affecting the secretion of glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP). Objective This systematic review and meta-analysis aimed to assess the postprandial and long-term effects of whole grains on GLP-1 and GIP levels. Data Sources PubMed, Web of Science, and Scopus online databases were searched systematically to identify relevant randomized clinical trials (RCTs) published up to April 2021. Study Selection RCTs that evaluated the effects of whole grains, compared with refined grains, on the postprandial area under the curve (AUC) value, the postprandial serum concentration of incretins from 0 to 180 minutes, or the fasting level of incretins after at least 14 days of intervention were included. Results Nineteen studies were included in the meta-analysis. The results showed that acute intake of whole grains could not significantly change the AUC value of GLP-1 or GIP. However, the AUC value of GIP was reduced more significantly in (1) unhealthy participants (standard mean difference [SMD] −1.08; 95%CI, −2.07 to −0.10; I
2 = 75.9%) compared with healthy participants, and (2) those with a baseline fasting blood glucose of ≥99 mg/dL (SMD −0.71; 95%CI, −1.30 to −0.11; I2 = 74.4%) compared with those with a baseline value of < 99 mg/dL. On the other hand, the results of time-response evaluation during 0 to 180 minutes after the intake of test meals showed that serum concentrations of GIP decreased significantly from 0 to 30 minutes (coefficient = −44.72; P = 0.005), but increased from 60 to 180 minutes (coefficient = 27.03; P = 0.005). However, long-term studies found no significant effects of whole grains on fasting concentrations of GLP-1 or GIP. Conclusion Whole grain intake did not affect postprandial levels of GLP-1 but enhanced postprandial levels of GIP from 60 to 180 minutes. Further high-quality trials are required to assess the long-term effects of whole grain intake on serum levels of incretins. Systematic Review Registration PROSPERO registration no. CRD42021256695. [ABSTRACT FROM AUTHOR]- Published
- 2023
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44. Effects of betaine supplementation on reproductive performance of breeding geese.
- Author
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Yang, Z., Xu, C., Ma, S., Zhao, R. Q., Yang, H. M., and Wang, Z. Y.
- Subjects
BETAINE ,EGG yolk ,GEESE ,EGG quality ,DIETARY supplements - Abstract
1. An experiment feeding three concentrations of betaine was conducted using breeding geese to analyse the reproductive performance, serum biochemical indexes, egg quality and intestinal immunity. 2. A total of 450 female and 90 male Jiangnan White breeding geese were divided into three treatments, with five pen replicates each containing 30 female geese and 6 male geese. 3. The results showed that there was no significant effect on the reproductive performance, serum biochemical indexes or jejunal villi goblet cells of geese with different levels of betaine in the diet (P > 0.05). Compared with the control group, the addition of 2.5 g/kg betaine to the diet showed a tendency to increase egg mass (P > 0.05) the betaine content in the yolk (P < 0.05). Feeding betaine significantly increased the height of jejunal villi and egg yolk total cholesterol content in female geese (P < 0.05). 4. In conclusion, adding betaine to the goose diet was effective in its ability to improve intestinal structures. Adding 2.5 g/kg betaine to feed significantly increased the content of TCHOL and betaine in goose eggs. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
45. Associations between dietary intake and glucose tolerance in clinical and metabolomics-based metabotypes.
- Author
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Rundblad, Amanda, Christensen, Jacob J., Hustad, Kristin S., Bastani, Nasser E., Ottestad, Inger, Holven, Kirsten B., and Ulven, Stine M.
- Abstract
Background: Metabotyping is a novel concept to group metabolically similar individuals. Different metabotypes may respond differently to dietary interventions; hence, metabotyping may become an important future tool in precision nutrition strategies. However, it is not known if metabotyping based on comprehensive omic data provides more useful identification of metabotypes compared to metabotyping based on only a few clinically relevant metabolites. Aim: This study aimed to investigate if associations between habitual dietary intake and glucose tolerance depend on metabotypes identified from standard clinical variables or comprehensive nuclear magnetic resonance (NMR) metabolomics. Methods: We used cross-sectional data from participants recruited through advertisements aimed at people at risk of type 2 diabetes mellitus (n = 203). Glucose tolerance was assessed with a 2-h oral glucose tolerance test (OGTT), and habitual dietary intake was recorded with a food frequency questionnaire. Lipoprotein subclasses and various metabolites were quantified with NMR spectroscopy, and plasma carotenoids were quantified using high-performance liquid chromatography. We divided participants into favorable and unfavorable clinical metabotypes based on established cutoffs for HbA1c and fasting and 2-h OGTT glucose. Favorable and unfavorable NMR metabotypes were created using k-means clustering of NMR metabolites. Results: While the clinical metabotypes were separated by glycemic variables, the NMR metabotypes were mainly separated by variables related to lipoproteins. A high intake of vegetables was associated with a better glucose tolerance in the unfavorable, but not the favorable clinical metabotype (interaction, p = 0.01). This interaction was confirmed using plasma concentrations of lutein and zeaxanthin, objective biomarkers of vegetable intake. Although non-significantly, the association between glucose tolerance and fiber intake depended on the clinical metabotypes, while the association between glucose tolerance and intake of saturated fatty acids and dietary fat sources depended on the NMR metabotypes. Conclusion: Metabotyping may be a useful tool to tailor dietary interventions that will benefit specific groups of individuals. The variables that are used to create metabotypes will affect the association between dietary intake and disease risk. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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46. The "fruit and whole‐grain" pattern is associated with a low prevalence of hypertriglyceridemia among middle and older‐aged Korean adults: Using Korea National Health and Nutrition Examination Survey 2013–2018 data.
- Author
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Park, SoHyun, Chung, Sangwon, Kim, Seong‐Ah, and Shin, Sangah
- Subjects
WHOLE grain foods ,KOREANS ,HYPERTRIGLYCERIDEMIA ,MISO - Abstract
Hypertriglyceridemia is a well‐known risk factor of various chronic diseases including diabetes mellitus, metabolic syndrome, obesity, and cardiovascular diseases. This study aimed to determine dietary patterns and explore the relationship between dietary patterns and hypertriglyceridemia in the Korean adult population. We utilized a cross‐sectional and nationally representative survey, the Korea National Health and Nutrition Examination Survey 2013–2018 database. From 47,217 subjects who participated in the survey between 2013 and 2018, only subjects over 40 years old were included. Subjects lacking 24‐h recall data and data on hypertriglyceridemia and body mass index, and who had implausible energy intake were excluded. A total of 19,806 participants' data were analyzed. Dietary data were based on 24‐h recall data, and dietary patterns were derived using factor analysis. Triglyceride levels greater than 200 mg/dl were considered hypertriglyceridemia, according to the Korean Society of Lipid and Atherosclerosis. Three dietary patterns— "oil and fats & seasoning", "soybean paste and vegetable", and "fruit and whole‐grain"— explained 7.9%, 6.3%, and 5.8% of variation in food intake, respectively. Comparing the lowest and highest dietary pattern score groups after adjusting for potential confounders revealed an inverse relationship between "fruit and whole‐grain" dietary pattern and hypertriglyceridemia in men (odds ratio [OR]: 0.61, 95% confidence interval [CI]: 0.45–0.82, p for trend <.0001); which was only marginal in women (OR: 0.78, 95% CI: 0.58–1.07, p for trend:.628). A diet containing high proportions of fruit and whole‐grain may have preventive effects on hypertriglyceridemia in middle and older aged Korean adults. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
47. Serum metabolites associated with wholegrain consumption using nontargeted metabolic profiling: a discovery and reproducibility study.
- Author
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Noerman, Stefania, Virtanen, Jyrki K., Lehtonen, Marko, Brunius, Carl, and Hanhineva, Kati
- Subjects
BLOOD serum analysis ,STATISTICS ,BIOMARKERS ,RESEARCH evaluation ,NUTRITIONAL assessment ,FOOD consumption ,METABOLOMICS ,LIQUID chromatography ,AGE distribution ,REGRESSION analysis ,PHYSICAL activity ,RESEARCH funding ,MASS spectrometry ,ALCOHOL drinking ,GRAIN ,BODY mass index ,SMOKING ,DATA analysis ,METABOLITES - Abstract
Purpose: To identify fasting serum metabolites associated with WG intake in a free-living population adjusted for potential confounders. Methods: We selected fasting serum samples at baseline from a subset (n = 364) of the prospective population-based Kuopio Ischaemic Heart Disease Risk Factor Study (KIHD) cohort. The samples were analyzed using nontargeted metabolomics with liquid chromatography coupled with mass spectrometry (LC–MS). Association with WG intake was investigated using both random forest followed by linear regression adjusted for age, BMI, smoking, physical activity, energy and alcohol consumption, and partial Spearman correlation adjusted for the same covariates. Features selected by any of these models were shortlisted for annotation. We then checked if we could replicate the findings in an independent subset from the same cohort (n = 200). Results: Direct associations were observed between WG intake and pipecolic acid betaine, tetradecanedioic acid, four glucuronidated alkylresorcinols (ARs), and an unknown metabolite both in discovery and replication cohorts. The associations remained significant (FDR<0.05) even after adjustment for the confounders in both cohorts. Sinapyl alcohol was positively correlated with WG intake in both cohorts after adjustment for the confounders but not in linear models in the replication cohort. Some microbial metabolites, such as indolepropionic acid, were positively correlated with WG intake in the discovery cohort, but the correlations were not replicated in the replication cohort. Conclusions: The identified associations between WG intake and the seven metabolites after adjusting for confounders in both discovery and replication cohorts suggest the potential of these metabolites as robust biomarkers of WG consumption. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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48. What Is the Microbiome? A Description of a Social Network.
- Author
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van Praagh, J.B. and Havenga, Klaas
- Abstract
The gut microbiome has coevolved with its hosts over the years, forming a complex and symbiotic relationship. It is formed by what we do, what we eat, where we live, and with whom we live. The microbiome is known to influence our health by training our immune system and providing nutrients for the human body. However, when the microbiome becomes out of balance and dysbiosis occurs, the microorganisms within can cause or contribute to diseases. This major influencer on our health is studied intensively, but it is unfortunately often overlooked by the surgeon and in surgical practice. Because of that, there is not much literature about the microbiome and its influence on surgical patients or procedures. However, there is evidence that it plays a major role, showing that it needs to be a topic of interest for the surgeon. This review is written to show the surgeon the importance of the microbiome and why it should be taken into consideration when preparing or treating patients. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
49. Assessment of Oxidant and Antioxidant Status in Prepubertal Children following Vegetarian and Omnivorous Diets.
- Author
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Rowicka, Grażyna, Klemarczyk, Witold, Ambroszkiewicz, Jadwiga, Strucińska, Małgorzata, Kawiak-Jawor, Ewa, Weker, Halina, and Chełchowska, Magdalena
- Subjects
OXIDANT status ,MEDIAN (Mathematics) ,DIET ,VEGETARIANS ,CALPROTECTIN - Abstract
Oxidant-antioxidant balance is crucial for maintaining one's health, and the diet is possibly one of the most important factors affecting this balance. Therefore, the aim of this study was to determine the oxidant-antioxidant balance in children on a lacto-ovo-vegetarian diet. The study was conducted between January 2020 and December 2021. The concentrations of total oxidant capacity (TOC), total antioxidant capacity (TAC), reduced (GSH), and oxidized (GSSG) glutathione, as well as C-reactive protein (CRP) and calprotectin were measured in serum samples of 72 healthy prepubertal children (32 vegetarians and 40 omnivores). The oxidative stress index (OSI) and the GSH/GSSG ratio (R-index) were calculated. Children on a vegetarian diet had significantly lower median values of TOC, GSH, and GSSG, and higher TAC compared with the omnivores. OSI was significantly lower in vegetarians, while R-index, as well as median values of CRP and calprotectin did not differ between both groups of children. Significant negative correlations were observed between TOC and TAC levels in the whole group of children and in vegetarians. GSH and GSSG levels correlated positively in the groups of vegetarians, omnivores, and in all the children. There were significant positive correlations between TOC and GSH, as well as GSSG levels in all the studied groups of children. Our study results suggest that the vegetarian model of nutrition allows to maintain the oxidant-antioxidant balance in the serum of prepubertal children. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
50. Egg Consumption in the Context of Plant-Based Diets and Diet Quality in Adults at Risk for Type 2 Diabetes: A Randomized Single Blind Cross-over Controlled Trial.
- Author
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Njike, Valentine Y., Kela, Genevieve Cecile M., Treu, Judith A., Ayettey, Rockiy G., Kussaga, Frank Masige, Khan, Nisar, Comerford, Beth, and Agboola, Olayinka
- Subjects
PLANT-based diet ,EGGS ,TYPE 2 diabetes ,CROSSOVER trials ,NUTRITION counseling ,DIET ,INGESTION - Abstract
Lifestyle changes that emphasis on plant-based diets (PBD) are typically recommended for those at risk for type 2 diabetes mellitus (T2DM) to mitigate their cardo-metabolic risk. We examined the impact of the inclusion of eggs compared with their exclusion from PBD on diet quality among adults at risk for T2DM. This was a randomized, controlled, single-blind, crossover trial of 35 adults (mean age 60.7 years; 25 women, 10 men; 34 Caucasians, 1 African-American) at risk for T2DM (i.e., pre- diabetes or metabolic syndrome) assigned to one of two possible sequence permutations of two treatments (PBD with eggs and exclusively PBD), with a 4-week washout period. Participants received dietary counseling from a dietitian to exclude or to include 2 eggs daily in the context of PBD for a 6-week period. Diet quality was assessed using the Healthy Eating Index 2015 (HEI-2015) at baseline and 6 weeks. Compared with the exclusion of eggs, the inclusion of eggs in the context of PBD improved the diet quality score for intake of total protein foods (1.0 ± 1.1 vs. −0.4 ± 1.0; p <.0001); seafood and plant proteins (0.2 ± 1.2 vs. −0.4 ± 1.1; p = 0.0338); and fatty acids (0.8 ± 2.5 vs. −0.7 ± 2.7; p = 0.0260). Overall diet quality score depreciated with the adoption of exclusively PBD without eggs (−3.1 ± 8.3; p = 0.0411), while it was unaffected with the adoption of a PBD with the inclusion of eggs (−0.6 ± 7.9; p = 0.6892). Eggs could be used as an adjuvant to enhance the diet quality among those at risk for T2DM who adopt plant-based dietary patterns. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
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