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Magi CE, Rasero L, Mannucci E, Bonaccorsi G, Ranaldi F, Pazzagli L, Faraoni P, Mulinacci N, Bambi S, Longobucco Y, Dicembrini I, Iovino P. Use of ancient grains for the management of diabetes mellitus: A systematic review and meta-analysis. Nutr Metab Cardiovasc Dis 2024; 34:1110-1128. [PMID: 38553358 DOI: 10.1016/j.numecd.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 02/15/2024] [Accepted: 03/03/2024] [Indexed: 04/09/2024]
Abstract
AIMS A systematic review and meta-analysis of published randomized controlled trials was conducted to collate evidence from studies implementing ancient grains and investigate the impact of ancient grain consumption on health outcomes of patients with Diabetes Mellitus (DM). DATA SYNTHESIS Twenty-nine randomized controlled trials were included, and 13 were meta-analyzed. Interventions ranged from 1 day to 24 weeks; most samples were affected by DM type 2 (n = 28 studies) and the ancient grains used were oats (n = 10 studies), brown rice (n = 6 studies), buckwheat (n = 4 studies), chia (n = 3 studies), Job's Tears (n = 2 studies), and barley, Khorasan and millet (n = 1 study). Thirteen studies that used oats, brown rice, and chia provided data for a quantitative synthesis. Four studies using oats showed a small to moderate beneficial effect on health outcomes including LDL-c (n = 717, MD: 0.30 mmol/l, 95% CI: 0.42 to -0.17, Z = 4.61, p < 0.05, I2 = 0%), and TC (n = 717, MD: 0.44 mmol/l, 95% CI: 0.63 to -0.24, Z = 4.40, p < 0.05, I2 = 0%). Pooled analyses of studies using chia and millet did not show significant effects on selected outcomes. CONCLUSIONS For adults affected by DM type 2, the use of oats may improve lipidic profile. Further experimental designs are needed in interventional research to better understand the effects of ancient grains on diabetes health outcomes. PROSPERO REGISTRATION CRD42023422386.
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Affiliation(s)
| | - Laura Rasero
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Edoardo Mannucci
- Diabetology and Metabolic Diseases, Careggi Teaching Hospital, Florence, Italy; Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | | | - Francesco Ranaldi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Luigia Pazzagli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Paola Faraoni
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Nadia Mulinacci
- Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Stefano Bambi
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Yari Longobucco
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Ilaria Dicembrini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Paolo Iovino
- Department of Health Sciences, University of Florence, Florence, Italy
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Ying T, Zheng J, Kan J, Li W, Xue K, Du J, Liu Y, He G. Effects of whole grains on glycemic control: a systematic review and dose-response meta-analysis of prospective cohort studies and randomized controlled trials. Nutr J 2024; 23:47. [PMID: 38664726 PMCID: PMC11044462 DOI: 10.1186/s12937-024-00952-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 04/16/2024] [Indexed: 04/29/2024] Open
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, HbA1C, 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.
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Affiliation(s)
- Tao Ying
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education, Fudan University, 130 Dong'an Road, Shanghai, 200032, China
| | | | - Juntao Kan
- Nutrilite Health Institute, Shanghai, China
| | - Wenyun Li
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education, Fudan University, 130 Dong'an Road, Shanghai, 200032, China
| | - Kun Xue
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education, Fudan University, 130 Dong'an Road, Shanghai, 200032, China
| | - Jun Du
- Nutrilite Health Institute, Shanghai, China
| | - Yuwei Liu
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education, Fudan University, 130 Dong'an Road, Shanghai, 200032, China.
| | - Gengsheng He
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education, Fudan University, 130 Dong'an Road, Shanghai, 200032, China.
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Maiti S, Banik A. Strategies to fortify the nutritional values of polished rice by implanting selective traits from brown rice: A nutrigenomics-based approach. Food Res Int 2023; 173:113271. [PMID: 37803581 DOI: 10.1016/j.foodres.2023.113271] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 10/08/2023]
Abstract
Whole-grain cereals are important components of a healthy diet. It reduces the risk of many deadly diseases like cardiovascular diseases, diabetes, cancer, etc. Brown rice is an example of whole grain food, which is highly nutritious due to the presence of various bioactive compounds (flavonoids, phenolics, vitamins, phytosterols, oils, etc.) associated with the rice bran layer of brown rice. White rice is devoid of the nutritious rice bran layer and thus lacks the bioactive compounds which are the major attractants of brown rice. Therefore, to confer health benefits to the public at large, the nutrigenomic potential of white rice may be improved by integrating the phytochemicals associated with the rice bran layer of brown rice into it via biofortification processes like conventional breeding, agronomic practices, metabolic engineering, CRISPR/Cas9 technology, and RNAi techniques. Thus, this review article focuses on improving the nutritional qualities of white/polished rice through biofortification processes, utilizing new breeding technologies (NBTs).
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Affiliation(s)
- Somdatta Maiti
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India
| | - Avishek Banik
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India.
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4
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Cheng Z, Qiao D, Zhao S, Zhang B, Lin Q, Xie F. Whole grain rice: Updated understanding of starch digestibility and the regulation of glucose and lipid metabolism. Compr Rev Food Sci Food Saf 2022; 21:3244-3273. [PMID: 35686475 DOI: 10.1111/1541-4337.12985] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 04/18/2022] [Accepted: 05/03/2022] [Indexed: 11/27/2022]
Abstract
Nowadays, resulting from disordered glucose and lipid metabolism, metabolic diseases (e.g., hyperglycemia, type 2 diabetes, and obesity) are among the most serious health issues facing humans worldwide. Increasing evidence has confirmed that dietary intervention (with healthy foods) is effective at regulating the metabolic syndrome. Whole grain rice (WGR) rich in dietary fiber and many bioactive compounds (e.g., γ-amino butyric acid, γ-oryzanol, and polyphenols) can not only inhibit starch digestion and prevent rapid increase in the blood glucose level, but also reduce oxidative stress and damage to the liver, thereby regulating glucose and lipid metabolism. The rate of starch digestion is directly related to the blood glucose level in the organism after WGR intake. Therefore, the effects of different factors (e.g., additives, cooking, germination, and physical treatments) on WGR starch digestibility are examined in this review. In addition, the mechanisms from human and animal experiments regarding the correlation between the intake of WGR or its products and the lowered blood glucose and lipid levels and the reduced incidence of diabetes and obesity are discussed. Moreover, information on developing WGR products with the health benefits is provided.
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Affiliation(s)
- Zihang Cheng
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | - Dongling Qiao
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan, China
| | - Siming Zhao
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | - Binjia Zhang
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan, China
| | - Qinlu Lin
- National Engineering Laboratory for Rice and By-product Deep Processing, Central South University of Forestry and Technology, Changsha, China
| | - Fengwei Xie
- School of Engineering, Newcastle University, Newcastle upon Tyne, UK
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Fermented brown rice beverage distinctively modulates the gut microbiota in Okinawans with Metabolic Syndrome: a randomized controlled trial. Nutr Res 2022; 103:68-81. [DOI: 10.1016/j.nutres.2022.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/23/2022] [Accepted: 03/26/2022] [Indexed: 11/16/2022]
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Zeng Y, Ali MK, Du J, Li X, Yang X, Yang J, Pu X, Yang L, Hong J, Mou B, Li L, Zhou Y. Resistant Starch in Rice: Its Biosynthesis and Mechanism of Action Against Diabetes-Related Diseases. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2021.2024221] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yawen Zeng
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Muhammad Kazim Ali
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- Karachi Institute of Biotechnology and Genetic Engineering, University of Karachi, Karachi, Pakistan
| | - Juan Du
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Xia Li
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Xiaomeng Yang
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- Key Laboratory of the Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Kunming, China
| | - Jiazhen Yang
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Xiaoying Pu
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Li’E Yang
- Agricultural Biotechnology Key Laboratory of Yunnan Province, Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Jingan Hong
- Clinical Nutrition Department, The First People’s Hospital of Yunnan Province, Kunming, China
| | - Bo Mou
- Clinical Nutrition Department, The Second People’s Hospital of Yunnan Province, Kunming, China
| | - Ling Li
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| | - Yan Zhou
- Clinical Nutrition Department, The Second People’s Hospital of Yunnan Province, Kunming, China
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Li S, Zong A, An R, Wang H, Liu L, Liu J, Guo X, Xu Z, Wang J, Li D, Du F, Xu T. Effects of whole grain intake on glycemic traits: A systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2021:1-20. [PMID: 34793262 DOI: 10.1080/10408398.2021.2001429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Whole grains (WGs) may have various health benefits, including lowering blood glucose and improving insulin sensitivity. To conduct a meta-analysis of the effects of WGs compared with non-WGs on changes in fasting glucose, fasting insulin, glycated hemoglobin (HbA1c), and homeostasis model assessment of insulin resistance (HOMA-IR). A systematic literature search was performed for all published randomized controlled trials on the effects of WG intake on fasting glucose, fasting insulin, HbA1c and HOMA-IR response up to February 2021. Weighted mean differences (WMD) were calculated. Pre-specified subgroup and univariate meta-regression analyses were explored to identify the sources of heterogeneity. Sensitivity analysis and bias analysis were conducted to appraise study quality. Among 12,435 articles screened for eligibility, data were extracted from 48 articles. Meta-analysis of 4,118 participants showed that WG consumption resulted in a significant reduction in fasting glucose by -0.15 mmol/L, fasting insulin by -2.71 pmol/L, HbA1c by -0.44%, and HOMA-IR by -0.28, respectively. Compared with mixed grains, brown rice, and wheat, oats were significantly lower on marker of glycemic. Besides, multiple interventions per day consolidated effectiveness of WGs. WG consumption decreased the levels of fasting glucose, fasting insulin, HbA1c, and HOMA-IR compared with non-WG consumption.
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Affiliation(s)
- Shixiang Li
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China.,College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Aizhen Zong
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China.,College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Ran An
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China.,College of Life Sciences, Shandong Normal University, Jinan, China
| | - Haiou Wang
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Lina Liu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Jie Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Xiaofei Guo
- Institute of Nutrition and Health, Qingdao University, Qingdao, China
| | - Zhixiang Xu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Jing Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Duo Li
- Institute of Nutrition and Health, Qingdao University, Qingdao, China
| | - Fangling Du
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Tongcheng Xu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Shandong Engineering Technology Research Center of food for Special Medical Purpose/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China.,College of Food Science and Engineering, Shandong Agricultural University, Taian, China.,College of Life Sciences, Shandong Normal University, Jinan, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
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Handayani D, Kusumastuty I, Innayah AM, Retnaningtyas E, Sulistyowati E, Sasiarini L, Rudijanto A. Substitution of local Indonesian varieties of brown rice on anthropometry and blood glucose level improvement in type 2 DM patients: a pilot project. J Public Health Res 2021; 11. [PMID: 34579520 PMCID: PMC8859717 DOI: 10.4081/jphr.2021.2283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/13/2021] [Indexed: 11/23/2022] Open
Abstract
Background: Diabetes mellitus (DM) is a metabolic disorder whose prevalence increases globally. Medical nutrition therapy (MNT) is one of the DM management pillars to control blood glucose. Local Indonesian brown rice is proven to contain high fiber and magnesium levels thus could improve obesity, fasting blood glucose, and HbA1c. This study aims to prove the benefits of brown rice on anthropometric parameters and blood glucose control. Design and methods: Respondents were overweight women older than 40 years with type 2 diabetes who were given three main meals and three snacks six days a week for 12 weeks. Anthropometric and blood glucose control data were collected before and after the intervention. Diet and intake data before the intervention were obtained through a semi quantitate food frequency questionnaire. Intake data during the intervention were recorded using the 24-hour food record and analyzed using modified NutriSurvey 2007 software. Results: Brown rice intervention significantly reduced body weight, BMI, body fat percentage, and abdominal circumference (p<0.05), also in fasting blood glucose (FBG), 2-h postprandial blood glucose (PBG), and HbA1c (p<0.05). From the Pearson’s test results, an increase in fiber intake correlated with a decrease in BMI and abdominal circumference (p=0.03; r = -0.511 and p=0.006; r = -0.619, respectively). Meanwhile, magnesium intake and changes in BMI showed a negative correlation. Conclusions: The substitution of brown rice as a staple food for 12 weeks improves anthropometric parameters and blood glucose control in respondents with type 2 diabetes. Significance for public health Diet management is one important point in blood glucose control in diabetes mellitus patients. Ignoring the eating habits of patients given interventions makes diet difficult to be implemented. The tradition of consuming rice as a staple food is a dietary pattern for Indonesians. Selecting brown rice as a staple food in patients with diabetes mellitus has been proven to improve blood glucose control. Clinical trials in this study can be used as a reference for public education regarding the recommended servings of brown rice in daily servings as blood glucose control.
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Affiliation(s)
- Dian Handayani
- Department of Nutrition Science, Faculty of Medicine, Universitas Brawijaya, Malang.
| | - Inggita Kusumastuty
- Department of Nutrition Science, Faculty of Medicine, Universitas Brawijaya, Malang.
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Abdul Rahim AF, Norhayati MN, Zainudin AM. The effect of a brown-rice diets on glycemic control and metabolic parameters in prediabetes and type 2 diabetes mellitus: a meta-analysis of randomized controlled trials and controlled clinical trials. PeerJ 2021; 9:e11291. [PMID: 34123581 PMCID: PMC8164413 DOI: 10.7717/peerj.11291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 03/26/2021] [Indexed: 12/03/2022] Open
Abstract
Background Brown rice is a whole-grain food that is often assumed to have a lower glycemic index compared to white rice. A few studies have objectively confirmed the effect of a brown-rice diet on glycemic control and metabolic parameters compared to a white-rice diet. The purpose of this study is to determine the effect of brown rice on improving glycemic control and metabolic parameters in prediabetes and type 2 diabetes. The researchers conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) and controlled clinical trials. Methods PRISMA guidelines were used as the basis of this systematic review. Relevant studies were identified by searching the following databases: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (PubMed), as well as Epistemonikos for randomized controlled trials (RCTs) and controlled clinical trials published not later than January 2021 involving adults with prediabetes and diabetes mellitus who were consuming brown rice compared to those consuming white rice. The primary outcomes measured were glycated hemoglobin (HbA1c) and fasting blood glucose (FBG) levels. The secondary outcomes were body weight, waist circumference, systolic and diastolic blood pressure levels, LDL and HDL-cholesterol levels. The mean differences (MDs) with 95% confidence intervals (CIs) between brown and white-rice-diet groups were calculated using a random-effects model. Results Seven trials involving 417 adults with prediabetes or type 2 diabetes were included in this study. Brown-rice diet did not improve the glycemic control because it had no effect on the HbA1c level (p = 0.15) and the FBG level (p = 0.95) compared to white-rice diet. Brown-rice diet reduced body weight (p < 0.00001; MD −2.2 kg; 95% CI [−3.13 to −1.26]; I2 = 0%). However, it had no effect on the waist circumference (p = 0.09), systolic blood pressure (p = 0.60) and diastolic blood pressure level (p = 0.40). HDL-cholesterol level is increased in brown-rice diet (p = 0.01; MD 0.10, 95% CI [0.02 to 0.17]; I2 = 44%) but it had no effect on the LDL-cholesterol level (p = 0.81). Conclusions The available evidence indicated that consuming brown rice in substitute for white rice does not affect glycemic control (HbA1c and FBG levels) in pre-diabetes and type 2 diabetes patients. Brown rice, however, may be used as an alternative for white rice in such patients because it was found to reduce body weight and increase the HDL-cholesterol level. The benefits of a brown-rice diet on glycemic control may not be detected in short-term studies. The obtained evidence in this meta-analysis ranged from low to moderate quality. Thus, more high-quality trials with a larger sample size and a longer follow-up duration are needed to further investigate the effects of a brown-rice diet on diabetes glycemic control with stronger evidence. PROSPERO registration number: CRD42019143266
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Affiliation(s)
- Anis Farhanah Abdul Rahim
- Department of Family Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Mohd Noor Norhayati
- Department of Family Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Aida Maziha Zainudin
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Golzarand M, Toolabi K, Eskandari Delfan S, Mirmiran P. The effect of brown rice compared to white rice on adiposity indices, lipid profile, and glycemic markers: a systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2021; 62:7395-7412. [PMID: 33905269 DOI: 10.1080/10408398.2021.1914541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A few randomized controlled trials (RCTs) have assessed the effect of brown rice consumption on metabolic parameters compared to white rice, with inconsistent findings. Therefore, the present systematic review and meta-analysis was designed to evaluate the effect of brown rice on adiposity indices, lipid profile, and glycemic markers in adult subjects compared to white rice. In this study, PubMed/Medline, Scopus, Web of Sciences, and Embase databases were comprehensively searched until March 2021. Thirteen RCTs were selected and then included in the meta-analysis. As reported, brown rice significantly reduced weight by -1.63 kg (95% CI: -2.15 to -1.11, I2=97%, n = 6), body mass index (BMI) by -0.58 kg/m2 (95% CI: -0.78 to -0.37, I2=96%, n = 6), and waist circumference by -2.56 cm (95% CI: -4.86 to -0.26, I2=88%, n = 5) compared with white rice. Moreover, it had no significant effect on lipid profile and glycemic markers. Besides, pre-germinated brown rice significantly declined weight (-1.75 kg, 95% CI: -2.70 to -0.81, I2=99%, n = 4), total cholesterol (-24.22 mg/dl, 95% CI: -33.03 to -15.41, I2=78%, n = 5), triglyceride (TG) (-43.28 mg/dl, 95% CI: -74.05 to -12.50, I2=90%, n = 5), low-density lipoprotein (LDL) (-20.05 mg/dl, 95% CI: -29.57 to -10.52, I2=71%, n = 5), and fasting blood glucose (FBG) (-15.83 mg/dl, 95% CI: -25.20 to -6.46, I2=91%, n = 5). In accordance with Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach, the certainly of the included evidence was low and very low. The results of the present study indicate that, brown rice has anti-obesity effects in comparison with white rice; however, it has no beneficial effects on lipid profile and glycemic markers. Contrary to brown rice, it was shown that, pre-germinated brown rice significantly decreases body weight and improves lipid profile and FBG levels compared to white rice. Accordingly, our results indicate that, pre-germinated brown rice has better functional effects on promoting lipid profile and FBG compared to brown rice.
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Affiliation(s)
- Mahdieh Golzarand
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Karamollah Toolabi
- Department of Surgery, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Parvin Mirmiran
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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11
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John OD, du Preez R, Panchal SK, Brown L. Tropical foods as functional foods for metabolic syndrome. Food Funct 2021; 11:6946-6960. [PMID: 32692322 DOI: 10.1039/d0fo01133a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tropical foods are an integral part of the traditional diet and form part of traditional medicine in many countries. This review examines the potential of tropical foods to treat signs of metabolic syndrome, defined as a chronic low-grade inflammation leading to obesity, hypertension, impaired glucose tolerance, insulin resistance, dyslipidaemia and fatty liver. It is a major risk factor for cardiovascular and metabolic disease as well as osteoarthritis and some cancers. Tropical foods such as seaweeds and tropical fruits including indigenous fruits such as Davidson's plums are effective in reducing these signs of metabolic syndrome in rats, as well as reducing degeneration of bone cartilage and altering gut microbiome. Further, waste products from tropical fruits including mangosteen rind, coffee pulp and spent coffee grounds provide further options to reduce metabolic syndrome. Production of local tropical foods and local recovery of food waste from these foods could allow the development of commercial, sustainable and cost-effective functional foods in tropical countries. The aim is to develop these functional foods to reduce the incidence of metabolic syndrome and decrease the risk of costly chronic cardiovascular and metabolic disorders locally and globally.
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Affiliation(s)
- Oliver D John
- Functional Foods Research Group, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
| | - Ryan du Preez
- Functional Foods Research Group, University of Southern Queensland, Toowoomba, QLD 4350, Australia. and School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD 4701, Australia
| | - Sunil K Panchal
- Functional Foods Research Group, University of Southern Queensland, Toowoomba, QLD 4350, Australia. and School of Science, Western Sydney University, Richmond, NSW 2753, Australia
| | - Lindsay Brown
- Functional Foods Research Group, University of Southern Queensland, Toowoomba, QLD 4350, Australia. and School of Health and Wellbeing, University of Southern Queensland, Ipswich, QLD 4305, Australia
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12
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Marshall S, Petocz P, Duve E, Abbott K, Cassettari T, Blumfield M, Fayet-Moore F. The Effect of Replacing Refined Grains with Whole Grains on Cardiovascular Risk Factors: A Systematic Review and Meta-Analysis of Randomized Controlled Trials with GRADE Clinical Recommendation. J Acad Nutr Diet 2020; 120:1859-1883.e31. [DOI: 10.1016/j.jand.2020.06.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 01/08/2023]
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13
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Effect of Eating Glutinous Brown Rice Twice a Day for 6 Weeks on Serum 1,5-Anhydroglucitol in Japanese Subjects without Diabetes. J Nutr Metab 2020; 2020:8847781. [PMID: 33123379 PMCID: PMC7584938 DOI: 10.1155/2020/8847781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/21/2020] [Accepted: 09/25/2020] [Indexed: 11/18/2022] Open
Abstract
We have previously demonstrated that eating glutinous brown rice (GBR) for 1 day or 8 weeks was well accepted and improved glycemic control in patients with type 2 diabetes. The present study evaluated whether eating GBR could also improve glucose metabolism in subjects without diabetes. A prospective 6-week, single-center, randomized, open-label, parallel-group study was carried out in subjects receiving annual medical checkup at our hospital. A total of 42 subjects were randomly assigned to continue their regular diet (RD group) or to switch GBR twice a day (GBR group). The primary outcome was the change in the serum concentration of 1,5-anhydroglucitol (1,5-AG) from baseline after the 6-week dietary intervention. One subject was excluded from the analysis because of a traffic accident. After 6 weeks, the serum 1,5-AG was significantly increased in the GBR group and the mean treatment difference (GBR group - RD group) was 1.1 µg/mL (95% CI: 0.6 to 1.6, p=0.022). Body mass index decreased significantly in both groups, with no significant difference between them (p=0.210). There were no changes in fasting plasma glucose, fasting insulin, or eating behavior. Intake of GBR for 6 weeks significantly increased serum 1,5-AG in Japanese subjects without diabetes. The increase of 1,5-AG may have been due to the alleviation of postprandial hyperglycemia, which could be effective for the primary prevention of diabetes.
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14
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Ruijgrok C, Blaak EE, Egli L, Dussort P, Vinoy S, Rauh SP, Beulens JW, Robertson MD, Alssema M. Reducing postprandial glucose in dietary intervention studies and the magnitude of the effect on diabetes-related risk factors: a systematic review and meta-analysis. Eur J Nutr 2020; 60:259-273. [PMID: 32277270 PMCID: PMC7867534 DOI: 10.1007/s00394-020-02240-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 03/25/2020] [Indexed: 11/20/2022]
Abstract
Purpose Reducing postprandial hyperglycemia has beneficial effects on
diabetes-related risk factors, but the magnitude of the reduction needed to achieve such
an effect is unknown. The purpose of the study was to quantify the relationship of acute
glucose and insulin postprandial responses with longer-term effects on diabetes-related
risk factors by performing a systematic review and meta-analysis of dietary intervention
studies. Methods We systematically searched EMBASE and MEDLINE. Dietary intervention studies
among any human population aiming to reduce postprandial glycemia, with actual measures of
postprandial glucose (PPG) and/or insulin (PPI) as acute exposures (incremental area under
the curve, iAUC) as well as markers of glucose metabolism (fasting glucose, HbA1c) and
insulin sensitivity (fasting insulin, HOMA-IR) after at least 4 weeks of diet intervention
as outcomes were included. Meta-analyses were performed for the effects on acute exposures
and on diabetes-related risk factors. The relationship between changes in acute exposures
and changes in risk factor outcomes was estimated by meta-regression analyses. Results Out of the 13,004 screened papers, 13 papers with 14 comparisons were
included in the quantitative analysis. The dietary interventions acutely reduced mean PPG
[mean difference (MD), − 0.27 mmol/l; 95% CI − 0.41 to − 0.14], but not mean PPI (MD
− 7.47 pmol/l; 95% CI − 16.79 to 1.86). There were no significant overall effects on
fasting glucose and insulin. HbA1c was reduced by − 0.20% (95% CI − 0.35 to − 0.05).
Changes in acute PPG were significantly associated with changes in fasting plasma glucose
(FPG) [per 10% change in PPG: β = 0.085 (95% CI 0.003,
0.167), k = 14], but not with fasting insulin
[β = 1.20 (95% CI − 0.32, 2.71), k = 12]. Changes in acute PPI were not associated with changes
in FPG [per 10% change in PPI: β = − 0.017 (95% CI
− 0.056, 0.022), k = 11]. Conclusions Only a limited number of postprandial glucose-lowering dietary intervention
studies measured acute postprandial exposures to PPG/PPI during the interventions. In this
small heterogeneous set of studies, an association was found between the magnitude of the
acute postprandial responses and the change in fasting glucose, but no other outcomes.
More studies are needed to quantify the relationship between acute postprandial changes
and long-term effects on risk factors. Electronic supplementary material The online version of this article (10.1007/s00394-020-02240-1) contains supplementary material, which is available to authorized
users.
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Affiliation(s)
- Carolien Ruijgrok
- Department of Epidemiology & Biostatistics, Amsterdam UMC - location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Ellen E Blaak
- Department of Human Biology, NUTRIM, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Léonie Egli
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Pierre Dussort
- ILSI Europe a.I.S.B.L., Avenue E. Mounier 83, Box 6, 1200, Brussels, Belgium.
| | - Sophie Vinoy
- Nutrition Department, Mondelez International R&D, Saclay, France
| | - Simone P Rauh
- Department of Epidemiology & Biostatistics, Amsterdam UMC - location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Joline W Beulens
- Department of Epidemiology & Biostatistics, Amsterdam UMC - location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.,Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Marjan Alssema
- Department of Epidemiology & Biostatistics, Amsterdam UMC - location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.,Unilever Research and Development, Vlaardingen, The Netherlands
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15
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Sen S, Chakraborty R, Kalita P. Rice - not just a staple food: A comprehensive review on its phytochemicals and therapeutic potential. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.01.022] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Fuse Y, Higa M, Miyashita N, Fujitani A, Yamashita K, Ichijo T, Aoe S, Hirose T. Effect of High β-glucan Barley on Postprandial Blood Glucose and Insulin Levels in Type 2 Diabetic Patients. Clin Nutr Res 2020; 9:43-51. [PMID: 32095447 PMCID: PMC7015725 DOI: 10.7762/cnr.2020.9.1.43] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 11/25/2022] Open
Abstract
The aim of our study was to investigate whether high β-glucan-containing barley (7.2 g per 100 g) improves postprandial plasma glucose levels and suppresses postprandial insulin levels during a meal tolerance test in type 2 diabetic patients. A meal tolerance test (500 kcal) was conducted using two types of test meals: a test meal with white rice (WR) alone (WR diet) and a test meal with WR mixed with 50% barley (BR diet) as staple food. The side dish was the same in the both meals. The changes in plasma glucose and serum C-peptide immunoreactivity (CPR) levels for 180 minutes after ingestion of the test meals were compared. Ten patients with type 2 diabetes (age 52.5 ± 15.1 years, and 7 males and 3 females) were included in this study. The mean HbA1c level and body mass index were 8.8 ± 1.4%, and 29.7 ± 4.5 kg/m2, respectively. Plasma glucose levels after ingestion of the WR diet or BR diet peaked at 60 minutes, which showed no significant differences between the two types of test meals. However, the incremental area under the curve (IAUC) of plasma glucose levels after ingestion of BR diet was significantly lower than that of WR diet. The serum CPR levels at 180 min and their IAUC over 180 minutes after ingestion of BR diet were significantly lower than those of WR diet. Conclusion: Increase in postprandial plasma glucose and insulin levels was suppressed by mixing high-β-glucan barley with WR in type 2 diabetic patients.
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Affiliation(s)
- Yukie Fuse
- Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Toho University Graduate School of Medicine, Tokyo 143-8541, Japan.,Department of Diabetes and Endocrinology, Department of Medicine, Saiseikai Yokohamashi Tobu Hospital, Kanagawa 230-0012, Japan
| | - Mariko Higa
- Department of Diabetes and Endocrinology, Department of Medicine, Saiseikai Yokohamashi Tobu Hospital, Kanagawa 230-0012, Japan
| | - Naoko Miyashita
- Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Toho University Graduate School of Medicine, Tokyo 143-8541, Japan
| | - Asami Fujitani
- Nutrition Support Team, Saiseikai Yokohamashi Tobu Hospital, Kanagawa 230-0012, Japan
| | - Kaoru Yamashita
- Department of Diabetes and Endocrinology, Department of Medicine, Saiseikai Yokohamashi Tobu Hospital, Kanagawa 230-0012, Japan
| | - Takamasa Ichijo
- Department of Diabetes and Endocrinology, Department of Medicine, Saiseikai Yokohamashi Tobu Hospital, Kanagawa 230-0012, Japan
| | - Seiichiro Aoe
- Department of Food Science, Faculty of Home Economics, Otsuma Women's University, Tokyo 102-8357, Japan
| | - Takahisa Hirose
- Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Toho University Graduate School of Medicine, Tokyo 143-8541, Japan
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17
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Wiruch P, Naruenartwongsakul S, Chalermchart Y. Textural Properties, Resistant Starch, and in Vitro Starch Digestibility as Affected by Parboiling of Brown Glutinous Rice in a Retort Pouch. CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE 2019. [DOI: 10.12944/crnfsj.7.2.24] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The effects that two preparation methods (parboiling with different degrees of gelatinization and parboiling with enzymatic hydrolysis) have on the qualities of brown glutinous rice were investigated in order to optimize the pretreatment conditions of brown glutinous rice for the ready-to-eat product in retort pouch. The brown glutinous rice was parboiled at various temperatures (50, 70 and 90C) and steamed at atmospheric pressure until the gelatinize level of 60, 80 and 100%. For the parboiling with enzymatic hydrolysis, the brown glutinous rice was immersed in xylanase before steamed. Results showed that parboiling not only affected the nutritional composition, color, and texture of glutinous rice but also decreased the Glycemic index (GI) to 61.3 ± 0.03 and raised the Resistance starch (RS) to 2.9 ± 0.02. There was interaction among RS, GI, and the amylopectin content of brown glutinous rice during parboiling without enzymatic hydrolysis. Amylopectin is directly proportional to GI but inversely proportional to RS. Enzymatic hydrolysis improved both the texture and the physical and chemical properties. In addition, the GI value of enzyme treated samples decreased to 62.7 ± 0.24 and the RS increased to 2.9 ± 0.05. The highest overall preference score was attained by parboiled rice which was soaked in water at 90°C and then steamed until 100%gelatinization.
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Affiliation(s)
- Pornpun Wiruch
- Division of Food Science and Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100 Thailand
| | | | - Yongyut Chalermchart
- Division of Food Engineering, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, 50100 Thailand
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18
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Fujiwara Y, Eguchi S, Murayama H, Takahashi Y, Toda M, Imai K, Tsuda K. Relationship between diet/exercise and pharmacotherapy to enhance the GLP-1 levels in type 2 diabetes. Endocrinol Diabetes Metab 2019; 2:e00068. [PMID: 31294084 PMCID: PMC6613229 DOI: 10.1002/edm2.68] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/15/2019] [Accepted: 03/28/2019] [Indexed: 12/15/2022] Open
Abstract
The rapid rise in the prevalence of type 2 diabetes mellitus (T2DM) poses a huge healthcare burden across the world. Although there are several antihyperglycaemic agents (AHAs) available including addition of new drug classes to the treatment algorithm, more than 50% of patients with T2DM do not achieve glycaemic targets, suggesting an urgent need for treatment strategies focusing on prevention and progression of T2DM and its long-term complications. Lifestyle changes including implementation of healthy diet and physical activity are cornerstones for the management of T2DM. The positive effects of diet and exercise on incretin hormones such as glucagon-like peptide-1 (GLP-1) have been reported. We hypothesize an IDEP concept (Interaction between Diet/Exercise and Pharmacotherapy) aimed at modifying the diet and lifestyle, along with pharmacotherapy to enhance the GLP-1 levels, would result in good glycaemic control in patients with T2DM. Consuming protein-rich food, avoiding saturated fatty acids and making small changes in eating habits such as eating slowly with longer mastication time can have a positive impact on the GLP-1 secretion and insulin levels. Further the type of physical activity (aerobic/resistance training), intensity of exercise, duration, time and frequency of exercise have shown to improve GLP-1 levels. Apart from AHAs, a few antihypertensive drugs and lipid-lowering drugs have also shown to increase endogenous GLP-1 levels, however, due to quick degradation of GLP-1 by dipeptidyl peptidase-4 (DPP-4) enzyme, treatment with DPP-4 inhibitors would protect GLP-1 from degradation and prolong its activity. Thus, IDEP concept can be a promising treatment strategy, which positively influences the GLP-1 levels and provide additive benefits in terms of improving metabolic parameters in patients with T2DM and slowing the progression of T2DM and its associated complications.
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Affiliation(s)
- Yuki Fujiwara
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Shunsuke Eguchi
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Hiroki Murayama
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Yuri Takahashi
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Mitsutoshi Toda
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Kota Imai
- Medical Division, Cardio‐Metabolic Medical Franchise DepartmentNovartis Pharma K.KTokyoJapan
| | - Kinsuke Tsuda
- Faculty of Human SciencesTezukayama Gakuin UniversityOsakaJapan
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19
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Ch'ng LZ, Barakatun-Nisak MY, Wan Zukiman WZH, Abas F, Wahab NA. Nutritional strategies in managing postmeal glucose for type 2 diabetes: A narrative review. Diabetes Metab Syndr 2019; 13:2339-2345. [PMID: 31405640 DOI: 10.1016/j.dsx.2019.05.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 05/22/2019] [Indexed: 12/13/2022]
Abstract
Medical Nutrition Therapy (MNT) plays an essential role in overall glycemic management. Less focus is given on managing postmeal hyperglycemia despite the facts that, it is a common feature of Type 2 Diabetes (T2D). The purpose of this narrative review is to provide a comprehensive understanding of the existing literature on the nutritional approaches to improve postmeal hyperglycemia in patients with T2D. We searched multiple databases for the studies examining the nutritional approaches to manage postmeal glucose in patients with T2D. We included studies that involve human trials that were published in English for the past 10 years. Our review of the current literature indicates that the postmeal hyperglycemia can be improved with four nutritional approaches. These approaches include (i) utilizing the appropriate amount and selecting the right type of carbohydrates, (ii) using specific types of dietary protein, (iii) manipulating the meal timing and orders and (iv) others (promoting postmeal physical activity, incorporating diabetes-specific formula and certain functional foods). The potential mechanisms underlying these approaches are discussed and the identified gaps warranted further research. This array of nutritional strategies provide a set of options for healthcare professionals to facilitate patients with T2D in achieving the optimal level of postmeal glucose.
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Affiliation(s)
- Lau Zhi Ch'ng
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia
| | - Mohd Yusof Barakatun-Nisak
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia; Research Centre of Excellent for Nutrition and Noncommunicable Diseases (NNCD), Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia.
| | | | - Faridah Abas
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra, Malaysia
| | - Norasyikin A Wahab
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan, Malaysia
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20
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Substituting brown rice for white rice on diabetes risk factors in India: a randomised controlled trial. Br J Nutr 2019; 121:1389-1397. [PMID: 31006420 DOI: 10.1017/s000711451900076x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
India has the second largest number of people with type 2 diabetes (T2D) globally. Epidemiological evidence indicates that consumption of white rice is positively associated with T2D risk, while intake of brown rice is inversely associated. Thus, we explored the effect of substituting brown rice for white rice on T2D risk factors among adults in urban South India. A total of 166 overweight (BMI ≥ 23 kg/m2) adults aged 25-65 years were enrolled in a randomised cross-over trial in Chennai, India. Interventions were a parboiled brown rice or white rice regimen providing two ad libitum meals/d, 6 d/week for 3 months with a 2-week washout period. Primary outcomes were blood glucose, insulin, glycosylated Hb (HbA1c), insulin resistance (homeostasis model assessment of insulin resistance) and lipids. High-sensitivity C-reactive protein (hs-CRP) was a secondary outcome. We did not observe significant between-group differences for primary outcomes among all participants. However, a significant reduction in HbA1c was observed in the brown rice group among participants with the metabolic syndrome (-0·18 (se 0·08) %) relative to those without the metabolic syndrome (0·05 (se 0·05) %) (P-for-heterogeneity = 0·02). Improvements in HbA1c, total and LDL-cholesterol were observed in the brown rice group among participants with a BMI ≥ 25 kg/m2 compared with those with a BMI < 25 kg/m2 (P-for-heterogeneity < 0·05). We observed a smaller increase in hs-CRP in the brown (0·03 (sd 2·12) mg/l) compared with white rice group (0·63 (sd 2·35) mg/l) (P = 0·04). In conclusion, substituting brown rice for white rice showed a potential benefit on HbA1c among participants with the metabolic syndrome and an elevated BMI. A small benefit on inflammation was also observed.
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21
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Higa M, Fuse Y, Miyashita N, Fujitani A, Yamashita K, Ichijo T, Aoe S, Hirose T. Effect of High β-glucan Barley on Postprandial Blood Glucose Levels in Subjects with Normal Glucose Tolerance: Assessment by Meal Tolerance Test and Continuous Glucose Monitoring System. Clin Nutr Res 2019; 8:55-63. [PMID: 30746348 PMCID: PMC6355944 DOI: 10.7762/cnr.2019.8.1.55] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 12/19/2022] Open
Abstract
The effect of white rice (WR) mixed with high β-glucan-containing barley at 50% on improvement of postprandial blood glucose levels was assessed by meal tolerance test and continuous glucose monitoring (CGM) in 15 healthy subjects with normal glucose tolerance (age 31.6 ± 12.9 years old, 4 males and 11 females). A meal tolerance test (500 kcal) was conducted using 2 types of test meals: a test meal only with WR and a test meal WR mixed 50% barley, and the side dish was the same in both meals. Blood glucose levels of the subjects 180 minutes after ingestion of the test meals were compared. In addition, a CGM device was attached to the subjects for 2 days when the WR or barley as a staple food was provided 3 times a day for consecutive days, and the daily variation of glucose was investigated. The glucose levels 30 minutes after dietary loads and the area under the blood concentration-time curve over 180 minutes were significantly decreased in the barley consumption group. In CGM, 24-hour mean blood glucose and 24-hour standard deviation of blood glucose were also significantly decreased after ingestion of the barley. Postprandial glucose level elevation was suppressed by mixing high-β-glucan barley with WR in subjects with normal glucose tolerance.
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Affiliation(s)
- Mariko Higa
- Department of Diabetes and Endocrinology, Saiseikai Yokohamashi Tobu Hospital, Yokohama 230-0012, Japan.,Diabetes, Metabolism and Endocrinology, Toho University, Tokyo 143-8541, Japan
| | - Yukie Fuse
- Diabetes, Metabolism and Endocrinology, Toho University, Tokyo 143-8541, Japan
| | - Naoko Miyashita
- Diabetes, Metabolism and Endocrinology, Toho University, Tokyo 143-8541, Japan
| | - Asami Fujitani
- Nutrition Support Team, Saiseikai Yokohamashi Tobu Hospital, Yokohama 230-0012, Japan
| | - Kaoru Yamashita
- Department of Diabetes and Endocrinology, Saiseikai Yokohamashi Tobu Hospital, Yokohama 230-0012, Japan
| | - Takamasa Ichijo
- Department of Diabetes and Endocrinology, Saiseikai Yokohamashi Tobu Hospital, Yokohama 230-0012, Japan
| | - Seiichiro Aoe
- Department of Food Science, Faculty of Home Economics, Otsuma Women's University, Tokyo 102-8357, Japan
| | - Takahisa Hirose
- Diabetes, Metabolism and Endocrinology, Toho University, Tokyo 143-8541, Japan
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22
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Xia Q, Green BD, Zhu Z, Li Y, Gharibzahedi SMT, Roohinejad S, Barba FJ. Innovative processing techniques for altering the physicochemical properties of wholegrain brown rice ( Oryza sativa L.) - opportunities for enhancing food quality and health attributes. Crit Rev Food Sci Nutr 2018; 59:3349-3370. [PMID: 29993273 DOI: 10.1080/10408398.2018.1491829] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Rice is a globally important staple consumed by billions of people, and recently there has been considerable interest in promoting the consumption of wholegrain brown rice (WBR) due to its obvious advantages over polished rice in metabolically protective activities. This work highlights the effects of innovative processing technologies on the quality and functional properties of WBR in comparison with traditional approaches; and it is aimed at establishing a quantitative and/or qualitative link between physicochemical changes and high-efficient processing methods. Compared with thermal treatments, applications of innovative nonthermal techniques, such as high hydrostatic pressure (HHP), pulsed electric fields (PEF), ultrasound and cold plasma, are not limited to modifying physicochemical properties of WBR grains, since improvements in nutritional and functional components as well as a reduction in anti-nutritional factors can also be achieved through inducing related biochemical transformation. Much information about processing methods and parameters which influence WBR quality changes has been obtained, but simultaneously achieving the product stabilization and functionality of processed WBR grains requires a comprehensive evaluation of all the quality changes induced by different processing procedures as well as quantitative insights into the relationship between the changes and processing variables.
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Affiliation(s)
- Qiang Xia
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Brian D Green
- Institute for Global Food Security, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Zhenzhou Zhu
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Yunfei Li
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | | | - Shahin Roohinejad
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, USA.,Burn and Wound Healing Research Center, Division of Food and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Francisco J Barba
- Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine Department, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés, s/n, Burjassot, València, 46100, Spain
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23
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Ravichanthiran K, Ma ZF, Zhang H, Cao Y, Wang CW, Muhammad S, Aglago EK, Zhang Y, Jin Y, Pan B. Phytochemical Profile of Brown Rice and Its Nutrigenomic Implications. Antioxidants (Basel) 2018; 7:E71. [PMID: 29789516 PMCID: PMC6025443 DOI: 10.3390/antiox7060071] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 01/09/2023] Open
Abstract
Whole grain foods have been promoted to be included as one of the important components of a healthy diet because of the relationship between the regular consumption of whole-grain foods and reduced risk of chronic diseases. Rice is a staple food, which has been widely consumed for centuries by many Asian countries. Studies have suggested that brown rice is associated with a wide spectrum of nutrigenomic implications such as anti-diabetic, anti-cholesterol, cardioprotective and antioxidant. This is because of the presence of various phytochemicals that are mainly located in bran layers of brown rice. Therefore, this paper is a review of publications that focuses on the bioactive compounds and nutrigenomic implications of brown rice. Although current evidence supports the fact that the consumption of brown rice is beneficial for health, these studies are heterogeneous in terms of their brown rice samples used and population groups, which cause the evaluation to be difficult. Future clinical studies should focus on the screening of individual bioactive compounds in brown rice with reference to their nutrigenomic implications.
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Affiliation(s)
- Keneswary Ravichanthiran
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 2073, Sabah, Malaysia.
| | - Zheng Feei Ma
- Department of Public Health, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.
- School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu 15200, Kelantan, Malaysia.
| | - Hongxia Zhang
- Department of Food Science, University of Otago, Dunedin 9016, New Zealand.
| | - Yang Cao
- Department of Health Promotion, Pudong Maternal and Child Health Care Institution, Shanghai 201399, China.
| | - Chee Woon Wang
- Department of Biochemistry, Faculty of Medicine, MAHSA University, Bandar Saujana Putra 42610, Jenjarom, Selangor, Malaysia.
| | - Shahzad Muhammad
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25100, Pakistan.
| | - Elom K Aglago
- Joint Unit of Research in Nutrition and Food Science, Ibn Tofail University, Kenitra 14000, Morocco.
| | - Yihe Zhang
- Division of Medicine, School of Life and Medical Sciences, University College London, London WC1E6BT, UK.
| | - Yifan Jin
- Department of Public Health, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.
| | - Binyu Pan
- Department of Clinical Nutrition, The First People's Hospital of Wujiang District, Suzhou 215200, China.
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Xia Q, Li Y. Ultra-high pressure effects on color, volatile organic compounds and antioxidants of wholegrain brown rice (Oryza sativa L.) during storage: A comparative study with high-intensity ultrasound and germination pretreatments. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2017.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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