Effect of partially-abraded brown rice consumption on body weight and the indicators of glucose and lipid metabolism in pre-diabetic adults: A randomized controlled trial

Araki, Ryosuke; Ushio, Reiko; Fujie, Keiko; Ueyama, Yukari; Suzuki, Hiroaki; Nakata, Yoshio; Hashimoto, Koichi

doi:10.1016/j.clnesp.2017.01.015

Cited by 10 publications

(14 citation statements)

References 27 publications

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“…The characteristics of the seven included trials are summarized in Table 1 . Four parallel RCTs (i.e., Araki et al, 2017 ; Kondo et al, 2017 ; Wang et al, 2012 ; Zhang et al, 2011 ), two crossover RCTs (i.e., Hsu et al, 2008 ; Nakayama et al, 2017 ), and one controlled clinical trial (i.e., Bui et al, 2014 ) that compared the effects of a brown-rice diet on individuals with prediabetes or type 2 diabetes with those of a white-rice diet were included. A total of 415 participants were involved.…”

Section: Resultsmentioning

confidence: 99%

“…For random sequence generation, one trial was a controlled clinical trial (i.e., Bui et al, 2014 ), in which no randomization procedure was described; thus, it had a high risk of selection bias. Two trials (i.e., Araki et al, 2017 ; Kondo et al, 2017 ) were assessed as having a low risk of bias, as they generated a random sequence by age stratification using the minimization method. The other four trials (i.e, Hsu et al, 2008 ; Nakayama et al, 2017 ; Wang et al, 2012 ; Zhang et al, 2011 ) had an unclear risk of bias because the method of random sequence generation that was used was not mentioned.…”

Section: Resultsmentioning

confidence: 99%

“…Only one study (i.e., Kondo et al, 2017 ) was assessed as having a low risk of bias for allocation concealment because the participants were provided with both brown and white rice in small single-serve pouches while another two trials (i.e., Hsu et al, 2008 ; Nakayama et al, 2017 ) were assessed as having an unclear risk of bias because the allocation concealment method that was used was not mentioned. Six of the seven included trials did not state the blinding of the outcome assessors (i.e., Araki et al, 2017 ; Bui et al, 2014 ; Kondo et al, 2017 ; Wang et al, 2012 ; Zhang et al, 2011 ), but it was unlikely that the trial outcomes were influenced by the fact that the assessors were not blinded because the outcomes were objective assessments of laboratory results and anthropometric measurements. Therefore, the blinding of the outcome assessors was posed as a low risk of bias.…”

Section: Resultsmentioning

confidence: 99%

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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

Rahim

Norhayati

Zainudin

2021

PeerJ

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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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

Rahim

Norhayati

Zainudin

2021

PeerJ

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“…In a randomized controlled trial, 42 prediabetic, overweight patients were randomly assigned into 400 g partiallyabraded brown rice (PABR) or white rice (WR) daily for 12 weeks. The results showed that particle numbers of small LDL and very small LDL were significantly reduced in the PABR group, whereas in the WR group, they were increased [113].…”

Section: Brown Ricementioning

confidence: 89%

The beneficial effects of nutraceuticals and natural products on small dense LDL levels, LDL particle number and LDL particle size: a clinical review

et al. 2020

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Cardiovascular diseases (CVDs) are globally the major causes of morbidity and mortality. Evidence shows that smaller and denser low-dense lipoprotein (sdLDL) particles are independent atherogenic risk factors for CVD due to their greater susceptibility to oxidation, and permeability in the endothelium of arterial walls. sdLDL levels are an independent risk factor and of more predictive value than total LDL-C for the assessment of coronary artery disease and metabolic syndrome. Functional food ingredients have attracted significant attention for the management of dyslipidemia and subsequently increase cardio-metabolic health. However, to date there is no study that has investigated the effect of these bioactive natural compounds on sdLDL levels. Therefore, the aim of the present review is to summarize the evidence accrued on the effect of special dietary ingredients such as omega-3 polyunsaturated fatty acids, nutraceuticals and herbal medicines on the levels of sdLDL, LDL particle number, and LDL particle size. Based on the results of the existing clinical trials this review suggests that natural products such as medicinal plants, nutraceuticals and omega-3 fatty acids can be used as adjunct or complementary therapeutic agents to reduce sdLDL levels, LDL particle numbers or increase LDL particle size and subsequently may prevent and treat CVD, with the advantage that theses natural agents are generally safe, accessible, and inexpensive.

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“…Twelve-week supplementation of partially-abraded brown rice has been shown to attenuate weight gain and improve lipid metabolism in pre-diabetic overweight human subjects (Araki et al, 2017). In addition, brown rice bran supplementation has been shown to significantly reduce serum cholesterol levels and improve low density lipoprotein cholesterol to high density lipoprotein cholesterol ratios by 0.6 mol/mol in moderately hyperlipidemic human subjects (Gerhardt and Gallo, 1998).…”

Section: Anti-dyslipidaemic Properties Of Rice-derived Polyphenolsmentioning

confidence: 99%

Therapeutic potential of rice-derived polyphenols on obesity-related oxidative stress and inflammation

Callcott¹,

Santhakumar²,

Luo³

et al. 2018

JAB

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Global obesity rates are of epidemic proportion. With limited treatments available there is a large demand for therapeutic alternatives. Polyphenols derived from coloured rice varieties may serve as a potential functional food alternative in combating obesity and obesity-related diseases. The antioxidant and anti-inflammatory properties of polyphenols found in coloured rice varieties could have the ability to neutralize oxidative stress and modulate inflammatory responses in obese populations. This review discusses polyphenols derived from rice, the oxidative stress and inflammatory pathways involved in obesity pathogenesis, bioavailability of polyphenols and the therapeutic potential of polyphenols on transcriptional and molecular pathways related to obesity and obesity-related diseases.

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Effect of partially-abraded brown rice consumption on body weight and the indicators of glucose and lipid metabolism in pre-diabetic adults: A randomized controlled trial

Cited by 10 publications

References 27 publications

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

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

The beneficial effects of nutraceuticals and natural products on small dense LDL levels, LDL particle number and LDL particle size: a clinical review

Therapeutic potential of rice-derived polyphenols on obesity-related oxidative stress and inflammation

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