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Sun J, Wei Y, Miao R, Zhang X, Zhang B, Zhang L, Zhao L. Comparison of the effects of different percentages of soy protein in the diet on patients with type 2 diabetic nephropathy: systematic reviews and network meta-analysis. Front Nutr 2023; 10:1184337. [PMID: 37693248 PMCID: PMC10484530 DOI: 10.3389/fnut.2023.1184337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 08/02/2023] [Indexed: 09/12/2023] Open
Abstract
Background Dietary soy protein (SP) is a potential intervention for protecting the kidneys and improving glucose and lipid metabolism. However, whether this effect is related to the percentage of SP intake remains unclear. Objective This study aims to review and analyze the results of randomized clinical trials (RCTs) in patients with type 2 diabetic nephropathy (T2DN) who received diets with different percentages of SP. Methods The databases: PubMed, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), Web of Science, China National Knowledge Infrastructure (CNKI), Chinese BioMedical Literature Database (CBM), WanFang, Weipu (VIP), and ClinicalTrials.gov were searched until February 2023, for RCTs on T2DN and SP. Results A total of six studies comprising 116 participants were included. The interventions were classified as 0% SP, 35% SP, and 100% SP. To improve serum creatinine (Scr), blood urea nitrogen (BUN), 24-h urine total protein (24hUTP), and glomerular filtration rate (GFR), a 35% SP diet was the most effective, compared to a 0% SP diet, which showed a mean difference of -154.00 (95% confidence interval: -266.69, -41.31) for 24hUTP. Although it had significant benefits for 24hUTP, great heterogeneity was observed. To improve the glycolipid metabolism-related markers such as cholesterol (CHO), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), fasting blood glucose (FPG), and weight, the 35% SP diet demonstrated superior efficacy compared to the 0% SP diet. Specifically, the mean difference for CHO was -0.55 (95% confidence interval: -1.08, -0.03), and for LDL-C, it was -17.71 (95% confidence interval: -39.67, -4.24). The other indicators were not statistically significant. Most studies had concerns regarding the risk of bias. Conclusion The findings of this study demonstrate that both 35% and 100% SP diets are more effective than a diet with no SP in improving renal function and glucolipid metabolism in patients with T2DN. As a result, a diet incorporating 35% SP may be the optimal choice for individuals with T2DN. Systematic review registration https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=352638, identifier CRD42022352638.
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Affiliation(s)
- Jun Sun
- Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, China
| | - Yu Wei
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate College, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Runyu Miao
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate College, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Xiangyuan Zhang
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate College, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Boxun Zhang
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lili Zhang
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Linhua Zhao
- Institute of Metabolic Diseases, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Yin L, Dong X, Liao W, Liu X, Zheng Z, Liu D, Wang C, Liu Z. Relationships of beans intake with chronic kidney disease in rural adults: A large-scale cross-sectional study. Front Nutr 2023; 10:1117517. [PMID: 37081921 PMCID: PMC10111024 DOI: 10.3389/fnut.2023.1117517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/14/2023] [Indexed: 04/07/2023] Open
Abstract
Background and aimsDietary factors play an important role in the development of chronic kidney disease (CKD). However, evidence on the relationship of beans consumption with CKD remains limited and inconclusive, especially in the middle-and low-income populations. The current study aimed to investigate the relationships of beans intake with indicators of kidney injury and CKD prevalence in rural adults.MethodsA total of 20,733 rural adults from the Henan Rural Cohort Study in 2018–2022 were included. The total beans intake was collected using a validated food frequency questionnaire. Indicators of kidney injury and CKD was determined by the estimated glomerular filtration rate and the urinary albumin to creatinine ratio. Generalized linear regression and logistic regression models were applied to estimate the relationship of beans intake with continuous and dichotomized indicators of renal function, respectively.ResultsOf the 20,733 participants, 2,676 (12.91%) subjects were identified as CKD patients. After adjusting for potential confounders, participants in the higher quartiles of beans intake had a lower prevalence of CKD (odds ratio and 95% confidence interval, OR (95%CI); Q2: 0.968(0.866–1.082); Q3: 0.836(0.744–0.939); Q4: 0.854(0.751–0.970)) and albuminuria (Q2: 0.982(0.875–1.102); Q3: 0.846(0.750–0.954); Q4: 0.852 (0.746–0.973)), compared with the Q1. Per 50 g/day increment in beans intake was significantly associated with a 5 and 4% decreased prevalence of albuminuria and CKD, respectively. These inverse relationships were also significant in the subgroups of men, elder, and high-income participants (p < 0.05).ConclusionDietary beans intake was inversely associated with the prevalence of albuminuria and CKD in rural adults, suggesting that promoting soy food intake might help reduce the occurrence of CKD in rural adults.
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Affiliation(s)
- Lei Yin
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaokang Dong
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Wei Liao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaotian Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhaohui Zheng
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dongwei Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Chongjian Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Chongjian Wang,
| | - Zhangsuo Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Zhangsuo Liu,
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Diet and Proteinuria: State of Art. Int J Mol Sci 2022; 24:ijms24010044. [PMID: 36613485 PMCID: PMC9819984 DOI: 10.3390/ijms24010044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/11/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Proteinuria is a broad term used to describe the pathological presence of proteins, including albumin, globulin, Bence-Jones protein, and mucoprotein in the urine. When persistent, proteinuria is a marker of kidney damage and represents a reliable predictor of the risk of progression of renal failure. Medical nutrition therapy is imperative for patients with proteinuria because it may slow the progression of renal disease. The aim of this review is to explore different nutritional approaches in the management of proteinuria and their influence on pathophysiological processes. As such, protein restriction is the main dietary intervention. Indeed, other management approaches are frequently used to reduce it regarding micro and macronutrients, but also the dietary style. Among these, the nutritional approach represents one of the most used and controversial interventions and the studies rarely take the form of randomized and controlled trials. With this work we aspire to analyze current clinical knowledge of how nutrition could influence proteinuria, potentially representing a useful tool in the management of proteinuric nephropathy.
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Yahyaei B, Safari M. Comparing of the effects of sesame oil and rapeseed oil versus suet oil and animal butter on the reproductive system of male rats. Clin Exp Hypertens 2022; 44:641-648. [PMID: 35922059 DOI: 10.1080/10641963.2022.2105348] [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: 11/03/2022]
Abstract
BACKGROUND The aim of this study was to compare the effect of vegetable oils and animal oils on the reproductive system of male rats. METHODS This study was a random and observational study conducted on 36 male rats with the age of 6 weeks weighing 200 ± 20 grams. Different groups were fed by sesame oil, suet oil, rapeseed oil and animal butter. The control group was fed by standard food used normally to feed animals in the laboratories. At the end of six weeks, testosterone level changes and weight changes were compared among different groups. Data were analyzed by SPSS-IBM version 16. RESULT Weight changes among groups did not show a dramatic statistical difference (P = .571 > 0.005). Average weight in control group was 202 and about the male rats fed by 10% of animal butter and by sesame oil were 206.5 and 99, respectively. Weight changes among groups were significant (P value = 0.005 > 0.0004). The average testosterone level in the control group was 2.4. This value in the different groups fed by 10% oils, the maximum was 12.2 and the minimum was 1.35 assigned to animal butter and rapeseed oil, respectively. So we concluded that using 10% of different oils causes an increase in testosterone level (P value = 0.001 > 0.05). The maximum testosterone level was 3.6 in the rapeseed 20% group and lowest 0.45 in the sesame 20% group. CONCLUSION We found that animal oil-containing diet has no significant harmful effect on male rat reproductive system in comparison with plant oils.
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Affiliation(s)
- Behrooz Yahyaei
- Department of Medical Sciences, Shahrood Branch, Islamic Azad University, Shahrood, Iran.,Department of Medical Sciences, Biological Nanoparticles in Medicine Research Center, Shahrood Branch, Islamic Azad University, Shahrood, Iran
| | - Miromid Safari
- Department of Medical Sciences, Shahrood Branch, Islamic Azad University, Shahrood, Iran
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Asbaghi O, Ashtary-Larky D, Mousa A, Rezaei Kelishadi M, Moosavian SP. The Effects of Soy Products on Cardiovascular Risk Factors in Patients with Type 2 Diabetes: A Systematic Review and Meta-analysis of Clinical Trials. Adv Nutr 2021; 13:S2161-8313(22)00072-2. [PMID: 34591084 PMCID: PMC8970819 DOI: 10.1093/advances/nmab121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Previous studies have suggested that soy products may be beneficial for cardiometabolic health, but current evidence regarding their effects in type 2 diabetes mellitus (T2DM) remain unclear. The aim of this systematic review and meta-analysis was to determine the impact of soy product consumption on cardiovascular risk factors in patients with T2DM. PubMed, Scopus, Embase, and the Cochrane library were systematically searched from inception to March 2021 using relevant keywords. All randomized controlled trials (RCTs) investigating the effects of soy product consumption on cardiovascular risk factors in patients with T2DM were included. Meta-analysis was performed using random-effects models and subgroup analysis was performed to explore variations by dose and baseline risk profile. A total of 22 trials with 867 participants were included in this meta-analysis. Soy product consumption led to a significant reduction in serum concentrations of triglycerides (TG) (WMD: -24.73 mg/dL; 95% CI: -37.49, -11.97), total cholesterol (TC) (WMD: -9.84 mg/dL; 95% CI: -15.07, -4.61), low density lipoprotein (LDL) cholesterol (WMD: -6.94 mg/dL; 95% CI: -11.71, -2.17) and C-reactive protein (CRP) (WMD: -1.27 mg/L; 95% CI: -2.39, -0.16). In contrast, soy products had no effect on high density lipoprotein (HDL) cholesterol, fasting blood sugar (FBS), fasting insulin, hemoglobin A1c (HbA1c), homeostatic model assessment of insulin resistance (HOMA-IR), systolic and diastolic blood pressure (SBP/DBP) or body mass index (BMI) (all P ≥ 0.05). In subgroup analyses, there was a significant reduction in FBS after soy consumption in patients with elevated baseline FBS (>126 mg/dL) and in those who received higher doses of soy intake (>30 g/d). Moreover, soy products decreased SBP in patients with baseline hypertension (>135 mmHg). Our meta-analysis suggests that soy product consumption may improve cardiovascular parameters in patients with T2DM, particularly in individuals with poor baseline risk profiles. However, larger studies with longer durations and improved methodological quality are needed before firm conclusions can be reached.
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Affiliation(s)
- Omid Asbaghi
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Damoon Ashtary-Larky
- Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Aya Mousa
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Mahnaz Rezaei Kelishadi
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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Eckert I, Koehler IC, Bauer J, Busnello FM, Silva FM. Effects of different sources of dietary protein on markers of kidney function in individuals with diabetes: a systematic review and meta-analysis of randomized controlled trials. Nutr Rev 2021; 80:812-825. [PMID: 34338778 DOI: 10.1093/nutrit/nuab042] [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: 11/13/2022] Open
Abstract
CONTEXT The type of dietary protein may modulate markers of diabetic kidney disease; however, no attempt to summarize the evidence from randomized controlled trials (RCTs) has been performed to date. OBJECTIVE To assess the effects of different types of dietary protein on urinary albumin excretion and glomerular filtration rate in individuals with diabetes. DATA SOURCES MEDLINE, EMBASE, and Scopus were searched for all published RCTs, with no language restriction, up to July 2020. DATA EXTRACTION Study selection and data extraction were performed independently by 3 authors. Risk of bias was assessed independently by 2 authors, and the GRADE approach was used to assess the quality of the evidence. RESULTS Twelve RCTs were included, of which 11 (involving 228 participants) were compiled in meta-analyses of random-effects models. Interventions consisted of diets emphasizing plant or white meat protein, with reduced intake of animal or red meat protein. Pooled data from crossover trials (n = 8) favored intervention diets for urinary albumin excretion (ratio of means, 0.86; 95% confidence interval 0.80 to 0.94; I2 = 4%) and glomerular filtration rate (ratio of means, 0.90; 95% confidence interval 0.87 to 0.94; I2 = 45%), compared with control diets. Results from parallel-design studies (n = 3), however, were not statistically significant for any outcome. The quality of the evidence ranged from very low to moderate, and most studies were judged with at least some concerns in terms of risk of bias. CONCLUSION This meta-analysis found weak evidence for small to moderate improvements in markers of kidney function in favor of interventions with lower animal protein (or red meat protein) compared with usual diets in short-term crossover trials. These findings require confirmation in well-designed randomized controlled trials.
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Affiliation(s)
- Igor Eckert
- I. Eckert is with the Undergraduate Nutrition Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. I.C. Koehler is with the Undergraduate Medical Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. J. Bauer is with the Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. F.M. Busnello and F.M. Silva are with the Department of Nutrition and Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil
| | - Igor C Koehler
- I. Eckert is with the Undergraduate Nutrition Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. I.C. Koehler is with the Undergraduate Medical Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. J. Bauer is with the Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. F.M. Busnello and F.M. Silva are with the Department of Nutrition and Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil
| | - Julia Bauer
- I. Eckert is with the Undergraduate Nutrition Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. I.C. Koehler is with the Undergraduate Medical Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. J. Bauer is with the Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. F.M. Busnello and F.M. Silva are with the Department of Nutrition and Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil
| | - Fernanda M Busnello
- I. Eckert is with the Undergraduate Nutrition Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. I.C. Koehler is with the Undergraduate Medical Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. J. Bauer is with the Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. F.M. Busnello and F.M. Silva are with the Department of Nutrition and Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil
| | - Flávia M Silva
- I. Eckert is with the Undergraduate Nutrition Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. I.C. Koehler is with the Undergraduate Medical Program, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. J. Bauer is with the Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil. F.M. Busnello and F.M. Silva are with the Department of Nutrition and Postgraduate Program in Nutrition Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Rio Grande do Sul, Brazil
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Wang X, Liang QF, Zeng X, Huang GX, Xin GZ, Xu YH, Wang SM, Tang D. Effects of soy isoflavone supplementation on patients with diabetic nephropathy: a systematic review and meta-analysis of randomized controlled trials. Food Funct 2021; 12:7607-7618. [PMID: 34236368 DOI: 10.1039/d1fo01175h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Diabetic nephropathy (DN) is a microvascular complication that is becoming a worldwide public health concern. The aim of this study was to assess the effects of dietary soy isoflavone intervention on renal function and metabolic syndrome markers in DN patients. Seven databases including Medline, the Cochrane Central Register of Controlled Trials, Science Direct, Web of Science, Embase, China National Knowledge Infrastructure, and WanFang were searched for controlled trials that assessed the effects of soy isoflavone treatment in DN patients. Finally, a total of 141 patients from 7 randomized controlled trials were included. The meta-analysis showed that dietary soy isoflavones significantly decreased 24-hour urine protein, C-reactive protein (CRP), blood urea nitrogen (BUN), total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), and fasting blood glucose (FBG) in DN patients. The standard mean difference was -2.58 (95% CI: -3.94, -1.22; P = 0.0002) for 24-hour urine protein, -0.67 (95% CI: -0.94, -0.41; P < 0.00001) for BUN, -6.16 (95% CI: -9.02, -3.31; P < 0.0001) for CRP, -0.58 (95% CI: -0.83, -0.33; P < 0.00001) for TC, -0.41 (95% CI: -0.66, -0.16; P < 0.00001) for TG, -0.68 (95% CI: -0.94, -0.42; P < 0.00001) for LDL-C, and -0.39 (95% CI: -0.68, -0.10; P = 0.008) for FBG. Therefore, soy isoflavones may ameliorate DN by significantly decreasing 24-hour urine protein, BUN, CRP, TC, TG, LDL-C, and FBG.
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Affiliation(s)
- Xue Wang
- Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM and Engineering & Technology Research Center for Chinese Materia Medica Quality of Guangdong Province, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Barańska A, Błaszczuk A, Polz-Dacewicz M, Kanadys W, Malm M, Janiszewska M, Jędrych M. Effects of Soy Isoflavones on Glycemic Control and Lipid Profile in Patients with Type 2 Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients 2021; 13:nu13061886. [PMID: 34072748 PMCID: PMC8229139 DOI: 10.3390/nu13061886] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/25/2021] [Accepted: 05/28/2021] [Indexed: 12/30/2022] Open
Abstract
The aim of the report was to investigate the impact of soy protein and isoflavones on glucose homeostasis and lipid profile in type 2 diabetes. The studies used in this report were identified by searching through the MEDLINE and EMBASE databases (up to 2020). Meta-regression and subgroup analyses were performed to explore the influence of covariates on net glycemic control and lipid changes. Weighted mean differences and 95% confidence intervals (CI) were calculated by using random-effect models. Changes in the lipid profile showed statistically significant decreases in total cholesterol and LDL-C concentrations: ‒0.21 mmol/L; 95% CI, ‒0.33 to ‒0.09; p = 0.0008 and ‒0.20 mmol/L; 95% CI, ‒0.28 to ‒0.12; p < 0.0001, respectively, as well as in HDL-C (−0.02 mmol/L; 95% CI, −0.05 to 0.01; p = 0.2008 and triacylglycerols (−0.19 mmol/L; 95% CI, −0.48 to 0.09; p = 0.1884). At the same time, a meta-analysis of the included studies revealed statistically insignificant reduction in fasting glucose, insulin, HbA1c, and HOMA-IR (changes in glucose metabolism) after consumption of soy isoflavones. The observed ability of both extracted isoflavone and soy protein with isoflavones to modulate the lipid profile suggests benefits in preventing cardiovascular events in diabetic subjects. Further multicenter studies based on larger and longer duration studies are necessary to determine their beneficial effect on glucose and lipid metabolism.
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Affiliation(s)
- Agnieszka Barańska
- Department of Medical Informatics and Statistics with E-Learning Lab, Medical University of Lublin, 20-090 Lublin, Poland; (M.M.); (M.J.); (M.J.)
- Correspondence:
| | - Agata Błaszczuk
- Department of Virology with SARS Laboratory, Medical University of Lublin, 20-093 Lublin, Poland; (A.B.); (M.P.-D.)
| | - Małgorzata Polz-Dacewicz
- Department of Virology with SARS Laboratory, Medical University of Lublin, 20-093 Lublin, Poland; (A.B.); (M.P.-D.)
| | | | - Maria Malm
- Department of Medical Informatics and Statistics with E-Learning Lab, Medical University of Lublin, 20-090 Lublin, Poland; (M.M.); (M.J.); (M.J.)
| | - Mariola Janiszewska
- Department of Medical Informatics and Statistics with E-Learning Lab, Medical University of Lublin, 20-090 Lublin, Poland; (M.M.); (M.J.); (M.J.)
| | - Marian Jędrych
- Department of Medical Informatics and Statistics with E-Learning Lab, Medical University of Lublin, 20-090 Lublin, Poland; (M.M.); (M.J.); (M.J.)
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He LX, Abdolmaleky HM, Yin S, Wang Y, Zhou JR. Dietary Fermented Soy Extract and Oligo-Lactic Acid Alleviate Chronic Kidney Disease in Mice via Inhibition of Inflammation and Modulation of Gut Microbiota. Nutrients 2020; 12:E2376. [PMID: 32784477 PMCID: PMC7468970 DOI: 10.3390/nu12082376] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/03/2020] [Accepted: 08/03/2020] [Indexed: 01/04/2023] Open
Abstract
Chronic kidney disease (CKD) is a global epidemic with an increasing prevalence worldwide. Effective preventive strategies are urgently needed. This study aimed to investigate the effect of nutraceutical components, a fermented soybean product (ImmuBalance, IMB) and an oligo-lactic acid product (LAP), on the prevention of adenine-induced CKD in mice. Female C57BL/6 mice were randomly assigned into following experimental groups: negative control; model control; and models treated with IMB at 250 or 1000 mg/kg body weight (BW), LAP at 1000 or 2000 mg/kg BW, and IMB/LAP combinations. The CKD model was established by intraperitoneal injection of adenine daily for 4 weeks, and treatments started 2 weeks before adenine injection and ended after 10 weeks. Compared with the model control, the treatments did not significantly alter the body weight or food intake. Both IMB and LAP, especially their combination, significantly inhibited tubular dilation, tubulointerstitial degeneration or atrophy, interstitial chronic inflammation and acute inflammation in the kidneys of CKD mice, and significantly decreased serum cystatin C levels. IMB or LAP significantly reversed CKD-associated increases of circulating and kidney levels of inflammatory cytokines, circulating levels of kidney injury biomarkers, and kidney levels of stem cell biomarkers, and significantly reversed CKD-associated reduction of cecum Clostridium leptum group. Our results suggest that dietary supplementation of IMB or LAP may significantly delay the development and/or progression of CKD.
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Affiliation(s)
- Li-Xia He
- Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; (L.-X.H.); (H.M.A.); (S.Y.)
- Feihe Nutrition Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Hamid M. Abdolmaleky
- Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; (L.-X.H.); (H.M.A.); (S.Y.)
| | - Sheng Yin
- Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; (L.-X.H.); (H.M.A.); (S.Y.)
| | - Yihong Wang
- Department of Pathology and Laboratory of Medicine, Warren Alpert Medical School of Brown University, Providence, RI 02912, USA;
| | - Jin-Rong Zhou
- Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; (L.-X.H.); (H.M.A.); (S.Y.)
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Xu K, Cui X, Wang B, Tang Q, Cai J, Shen X. Healthy adult vegetarians have better renal function than matched omnivores: a cross-sectional study in China. BMC Nephrol 2020; 21:268. [PMID: 32652943 PMCID: PMC7353802 DOI: 10.1186/s12882-020-01918-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 07/01/2020] [Indexed: 12/12/2022] Open
Abstract
Background An appropriate diet is an important determinant of kidney health. However, the association between vegetarian diets and renal function is unclear. We aimed to study the association between vegetarian diets and renal function in healthy adults. Methods A total of 269 vegetarians and 269 sex- and age-matched nonvegetarian omnivores were enrolled in this cross-sectional study. Basic characteristics and daily dietary intakes were assessed by face-to-face interviews. Blood samples were collected, and renal function was assessed by measuring blood urea nitrogen (BUN), serum creatinine (SCr), uric acid (UA) and the estimated glomerular filtration rate (eGFR). Blood pressure, fasting blood glucose and blood lipid profiles were also assessed. Results The average age of the vegetarians was 35.4 ± 8.6 years, 82.2% of whom were female. We evaluated the association between vegetarian diets and renal function using multivariate analysis. Compared with omnivores, vegetarians had lower BUN [β = − 0.63, 95% confidence interval (CI): (− 0.88, − 0.38)], SCr [β = − 2.04, 95% CI:(− 4.10, 0.02)], and UA levels [β = − 15.15, 95% CI: (− 27.81, − 2.50)] and higher eGFRs [β = 4.04, 95% CI: (0.30, 7.78)] after adjusting for sex, age, body mass index (BMI), physical activity, alcohol consumption, smoking status, low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), systolic pressure and fasting blood glucose. Further analysis of food composition and renal function showed that dietary fiber intake was significantly negatively associated with BUN [β = − 0.02, 95% CI: (− 0.03, 0.00)], SCr [β = − 0.14, 95% CI: (− 0.25, 0.04)], and UA levels [β = − 0.72, 95% CI: (− 1.36, 0.07)] and positively associated with the eGFR [β = 0.20, 95% CI: (0.00, 0.40)]. Conclusions Healthy adult vegetarians have better renal function than omnivores, and the higher dietary fiber intake associated with vegetarian diets may contribute to the protective effect on renal function.
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Affiliation(s)
- Kaijie Xu
- Department of Clinical Nutrition, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, 200092, China
| | - Xueying Cui
- Department of Nutrition, School of Public Health, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Bian Wang
- Department of Nutrition, School of Public Health, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Qingya Tang
- Department of Clinical Nutrition, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, 200092, China.,Department of Nutrition, School of Public Health, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jianfang Cai
- Department of Nephrology, 4 Clinical Epidemiology Unit, Peking Union Medical College Hospital, and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xiuhua Shen
- Department of Clinical Nutrition, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, 200092, China. .,Department of Nutrition, School of Public Health, Shanghai Jiao Tong University, Shanghai, 200025, China.
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12
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Rice bran protein ameliorates diabetes, reduces fatty liver, and has renoprotective effects in Zucker Diabetic Fatty rats. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103981] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Lecerf JM, Arnoldi A, Rowland I, Trabal J, Widhalm K, Aiking H, Messina M. Soyfoods, glycemic control and diabetes. NUTR CLIN METAB 2020. [DOI: 10.1016/j.nupar.2020.02.437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Kadowaki M, Kubota M, Watanabe R. Physiological Multifunctions of Rice Proteins of Endosperm and Bran. J Nutr Sci Vitaminol (Tokyo) 2020; 65:S42-S47. [PMID: 31619644 DOI: 10.3177/jnsv.65.s42] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Although it is considered a staple food, rice intake is under serious debate for its physiological usefulness, especially for diabetic patients, because of starch content. However, rice protein, the second major component of rice, has gained attention recently for its newly-discovered functions, which were previously unknown. Rice protein, a plant protein, shows multiple beneficial functions on lipid metabolism and diabetes and its complications, nephropathy, fatty liver and osteoporosis. Rice proteins of endosperm and bran, an ingredient of white rice and an unused product of brown rice, respectively, are valuable components for human health.
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Affiliation(s)
- Motoni Kadowaki
- Faculty of Agriculture, Niigata University.,Fuculty of Engineering, Niigata Institute of Technology
| | | | - Reiko Watanabe
- Department of Health and Nutrition, University of Niigata Prefecture
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15
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Antidiabetic effects of water-soluble Korean pine nut protein on type 2 diabetic mice. Biomed Pharmacother 2019; 117:108989. [DOI: 10.1016/j.biopha.2019.108989] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/28/2019] [Accepted: 05/13/2019] [Indexed: 01/03/2023] Open
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16
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Comparative effects of genistein and antibiotics on performance, meat oxidative stability, jejunal morphology, and ileal microbial community in broiler chicks. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2019.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Huang Z, Wang Y, Shafer R, Winn NC, Kanaley JA, Vardhanabhuti B. Glycemic effects following the consumption of mixed soy protein isolate and alginate beverages in healthy adults. Food Funct 2019; 10:1718-1725. [PMID: 30848259 DOI: 10.1039/c8fo01627e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study examined whether the consumption of beverages containing mixed soy protein isolate (SPI) and fiber, alginate (ALG), would affect postprandial glucose and insulin responses or appetite in healthy adults. Following an overnight fast, twelve healthy subjects were asked to consume six standardized breakfast beverages in a randomized order: a 122 kcal sugar beverage (CONT), a 122 kcal sugar beverage with ALG, a 172 kcal sugar beverage with SPI at pH 7 (SPI-7) or 6 (SPI-6), and a 172 kcal sugar beverage with mixed SPI and alginate at pH 7 (SPI + ALG-7) or 6 (SPI + ALG-6). Subjects consumed one of the beverages at time 0. Blood samples were drawn at -15, 0, 15, 30, 45, 60, 90 and 120 min and questionnaires were completed immediately following the blood drawing at each time point. The results showed that, compared to CONT, the consumption of SPI-7, SPI-6, SPI + ALG-7 and SPI + ALG-6 significantly lowered (P < 0.05) the peak plasma glucose concentration (33.4%, 36.3%, 53.2%, and 58.5%, respectively), 120 min incremental area under the curve (AUC), and peak insulin concentration. SPI + ALG-6 and SPI + ALG-7 exhibited a significant reduction in the peak glucose concentration compared to SPI without alginate (P < 0.05). No significant effect on appetite was found in any conditions. Electrostatic interactions between the protein and alginate during digestion and formation of intragastric gel could play an important role in influencing the postprandial glucose response. This study indicates that the consumption of mixed SPI and ALG beverages was the most effective in attenuating the postprandial glycemic excursion in healthy adult subjects.
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Affiliation(s)
- Zhaozhi Huang
- Food Science Program, University of Missouri, Columbia, MO 65211, USA.
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18
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Cao ZH, Green-Johnson JM, Buckley ND, Lin QY. Bioactivity of soy-based fermented foods: A review. Biotechnol Adv 2019; 37:223-238. [PMID: 30521852 DOI: 10.1016/j.biotechadv.2018.12.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 09/29/2018] [Accepted: 12/02/2018] [Indexed: 12/13/2022]
Abstract
For centuries, fermented soy foods have been dietary staples in Asia and, now, in response to consumer demand, they are available throughout the world. Fermentation bestows unique flavors, boosts nutritional values and increases or adds new functional properties. In this review, we describe the functional properties and underlying action mechanisms of soy-based fermented foods such as Natto, fermented soy milk, Tempeh and soy sauce. When possible, the contribution of specific bioactive components is highlighted. While numerous studies with in vitro and animal models have hinted at the functionality of fermented soy foods, ascribing health benefits requires well-designed, often complex human studies with analysis of diet, lifestyle, family and medical history combined with long-term follow-ups for each subject. In addition, the contribution of the microbiome to the bioactivities of fermented soy foods, possibly mediated through direct action or bioactive metabolites, needs to be studied. Potential synergy or other interactions among the microorganisms carrying out the fermentation and the host's microbial community may also contribute to food functionality, but the details still require elucidation. Finally, safety evaluation of fermented soy foods has been limited, but is essential in order to provide guidelines for consumption and confirm lack of toxicity.
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Affiliation(s)
- Zhen-Hui Cao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Julia M Green-Johnson
- Faculty of Science, University of Ontario Institute of Technology (UOIT), Oshawa L1H 7K4, Canada
| | | | - Qiu-Ye Lin
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
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19
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Jana L, Maity PP, Perveen H, Dash M, Jana S, Dey A, De SK, Chattopadhyay S. Attenuation of utero-toxicity, metabolic dysfunction and inflammation by soy protein concentrate in rats exposed to fluoridated water: consequence of hyperlipidemia in parallel with hypohomocysteinemia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36462-36473. [PMID: 30374712 DOI: 10.1007/s11356-018-3542-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
Lipid peroxidation and ROS generation are the pathogenesis of chronic fluoride toxicity, and its detrimental effects on human reproduction are noted drastically. The aim of the present study was to elucidate the defensive effects of soy protein concentrate (SPC) against sodium fluoride (NaF)-induced uterine dysfunction at biochemical and histological level. Rats were randomly distributed into four groups as control, NaF-treated (200 ppm), and SPC co-administered groups (20 mg and 40 mg/ 100 g body weight) for 16 days. SPC reversed the toxic effects of NaF. SPC significantly ameliorated the NaF-induced alterations of the antioxidant system in the uterus by decreasing lipid peroxidation products and by increasing antioxidant activities. SPC significantly counteracted the adverse effects of NaF on serum level of lactate dehydrogenase (LDH) and inflammatory markers Interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α) and nuclear factor kappa-B (NF-κB). Our results also explored that lipid profile was meaningfully altered due to NaF and also focused a diminution of circulating homocysteine (Hcy) and altered lipid profiles along with a diminished quantity of serum B12 and B9. However, both the doses of SPC reverted back serum levels of B12, B9, and Hcy status in similar fashion along with its corrective action on lipid profile. NaF-treated group exhibited a marked degree of reduction in the weights of ovary and uterus with an alteration of normal tissue histology and significant diminution in serum estradiol (ES) levels without fluctuating uterine estradiol receptor-α (ER-α). However, SPC restored the normal tissue histoarchitecture and also increased the functional efficiency and expression of the ER-α receptor by overturning the ES levels in NaF-treated rats. Moreover, both the doses of SPC were effective against NaF-induced alterations, although 40 mg SPC/100 g body weight had better efficacy in ameliorating the NaF-induced adverse effects on the uterus and ovary.
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Affiliation(s)
- Lipirani Jana
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Pikash Pratim Maity
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Hasina Perveen
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Moumita Dash
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Suryashis Jana
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Arindam Dey
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Subrata Kumar De
- Department of Zoology, Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Sandip Chattopadhyay
- Department of Biomedical Laboratory Science and Management, and Clinical Nutrition and Dietetics division (UGC Innovative Department), Vidyasagar University, Midnapore, West Bengal, 721102, India.
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Kahleova H, Fleeman R, Hlozkova A, Holubkov R, Barnard ND. A plant-based diet in overweight individuals in a 16-week randomized clinical trial: metabolic benefits of plant protein. Nutr Diabetes 2018; 8:58. [PMID: 30405108 PMCID: PMC6221888 DOI: 10.1038/s41387-018-0067-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 09/27/2018] [Accepted: 10/13/2018] [Indexed: 11/13/2022] Open
Abstract
Background and objectives A plant-based diet is an effective strategy in the treatment of obesity. In this 16-week randomized clinical trial, we tested the effect of a plant-based diet on body composition and insulin resistance. As a part of this trial, we investigated the role of plant protein on these outcomes. Subjects and methods Overweight participants (n = 75) were randomized to follow a plant-based (n = 38) or a control diet (n = 37). Dual X-ray Absorptiometry assessed body composition, Homeostasis Model Assessment (HOMA-IR) assessed insulin resistance, and a linear regression model was used to test the relationship between protein intake, body composition, and insulin resistance. Results The plant-based vegan diet proved to be superior to the control diet in improving body weight, fat mass, and insulin resistance markers. Only the vegan group showed significant reductions in body weight (treatment effect −6.5 [95% CI −8.9 to −4.1] kg; Gxt, p < 0.001), fat mass (treatment effect −4.3 [95% CI −5.4 to −3.2] kg; Gxt, p < 0.001), and HOMA-IR (treatment effect −1.0 [95% CI −1.2 to −0.8]; Gxt, p = 0.004). The decrease in fat mass was associated with an increased intake of plant protein and decreased intake of animal protein (r = -0.30, p = 0.011; and r = +0.39, p = 0.001, respectively). In particular, decreased % leucine intake was associated with a decrease in fat mass (r = +0.40; p < 0.001), in both unadjusted and adjusted models for changes in BMI and energy intake. In addition, decreased % histidine intake was associated with a decrease in insulin resistance (r = +0.38; p = 0.003), also independent of changes in BMI and energy intake. Conclusions These findings provide evidence that plant protein, as a part of a plant-based diet, and the resulting limitation of leucine and histidine intake are associated with improvements in body composition and reductions in both body weight and insulin resistance.
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Affiliation(s)
- Hana Kahleova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA.
| | - Rebecca Fleeman
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA
| | - Adela Hlozkova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA
| | - Richard Holubkov
- School of Medicine, University of Utah, Salt Lake City, UT, 84132, USA
| | - Neal D Barnard
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA.,Adjunct Faculty, George Washington University School of Medicine and Health Sciences, Washington, DC, 20016, USA
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21
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Das D, Sarkar S, Bordoloi J, Wann SB, Kalita J, Manna P. Daidzein, its effects on impaired glucose and lipid metabolism and vascular inflammation associated with type 2 diabetes. Biofactors 2018; 44:407-417. [PMID: 30191623 DOI: 10.1002/biof.1439] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/20/2018] [Indexed: 12/30/2022]
Abstract
Over the last decades, the incidence of type 2 diabetes (T2D) is increasing substantially. Emerging evidences from epidemiological studies have shown the association between higher intake of soy isoflavones and reduced risk of T2D and its associated health risks. Daidzein, a soy isoflavone, has been found to have a promising therapeutic potential in managing T2D pathophysiology. Fermented soybean is the major source of daidzein; however, it can also be formed via the consumption of its glycosylated moiety, daidzin with subsequent hydrolysis by intestinal bacterial enzyme. Many studies reported the prophylactic effect of daidzein on the improvement of hyperglycemia, insulin resistance, dislipidemia, obesity, inflammation, and other complications associated with T2D. The molecular mechanisms underlying the action of daidzein include diverged pathways where daidzein has been shown to interact with several signaling molecules and receptors to achieve desirable effect. Although the specific molecular mechanism is still elusive, further studies are thus needed to understand it in detail. In this review, we discuss the antidiabetic potential of daidzein with respect to the evidences from various clinical, preclinical, and cell culture studies and the underlying molecular mechanism in a precise way to have a comprehensive account on this isoflavone with promising therapeutic potential. © 2018 BioFactors, 44(5):407-417, 2018.
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Affiliation(s)
- Dibyendu Das
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Sanjib Sarkar
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Jijnasa Bordoloi
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Sawlang Borsingh Wann
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Jatin Kalita
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Prasenjit Manna
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
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23
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Johar D, Maher A, Aboelmagd O, Hammad A, Morsi M, Warda HF, Awad HI, Mohamed TA, Zaky S. Whole-food phytochemicals antioxidative potential in alloxan-diabetic rats. Toxicol Rep 2018; 5:240-250. [PMID: 29854595 PMCID: PMC5977378 DOI: 10.1016/j.toxrep.2018.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 01/11/2018] [Accepted: 01/11/2018] [Indexed: 12/25/2022] Open
Abstract
Soybean and whole-wheat have beneficial effects on the oxidative status of AD rats more than broadbean. Feeding dried wheat is effective in improving MDA, GSH and α-T levels. Germination is favorable than drying and moistened heat. Germination enhances the effect of soybeans on TAGs and in the case of soy and wheat enhanced the effect on total cholesterol. Diabetic patients, beside controlling their hyperglycaemia with medication, are recommended to include whole foods containing naturally occurring phytochemicals to ameliorate their oxidative status. Possible protective factors in the diet such as flavonoids, lutein, lycopene, lignans, and saponins, may provide new strategies to enhance diet and health of diabetic patients.
Background The importance of whole-food antioxidants in terms of promoting antioxidant recycling in the body in complex human diseases is not fully understood. We aim to discuss the benefits of whole-food antioxidants in ameliorating the diabetic complications in vivo and to address the effect of germination versus heat processing or drying on the potential therapeutic effect of whole grains and legumes. We studied the antioxidant status of alloxan-diabetic (AD) male Spargue Dawley rats, injected intraperitoneally with alloxan dose of 150 mg/kg body weight, and fed on experimental diets based on the flour of soybean, broadbean and whole-wheat for five weeks. Results Diabetes-induced oxidative stress in liver was manifested by significant increase in hepatic malondialdehyde (MDA), erythrocytes superoxide dismutase (eSOD) and plasma alpha-tocopherol (α-T) levels, reduction in hepatic glutathione (GSH) levels and catalase (CAT) activity. Consumption of soybean and whole-wheat both had beneficial effects on the oxidative status of AD rats more than broadbean. Feeding dried wheat was effective in improving MDA, GSH and α-T levels. Soybeans and wheat lowered triacylglycerols (TAGs) and tended to lower total cholesterol. Germination enhanced the effect of soybeans on TAGs and in the case of soy and wheat enhanced the effect on total cholesterol. Conclusion Whole foods containing naturally occurring phytochemicals and antioxidant vitamins such as legumes and whole grains are recommended, alongside medication, for controlling hyperglycaemia, blood lipids and oxidative status in diabetes.
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Affiliation(s)
- Dina Johar
- Department of Biochemistry and Nutrition, Faculty of Women for Arts, Sciences and Education, Ain Shams University, Heliopolis, Cairo, Egypt.,Department of Physiology and Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Ahmed Maher
- Department of Zoonotic Diseases, National Research Center, Dokki, Giza, Egypt
| | - Omnia Aboelmagd
- Faculty of Medicine, Cairo University, Kasr AlAiny, Cairo, Egypt
| | - Ali Hammad
- Faculty of Medicine, Cairo University, Kasr AlAiny, Cairo, Egypt
| | - Mahmoud Morsi
- Faculty of Medicine, Menoufia University, Shebin El-Kom, Menoufia, Egypt
| | - Hamdy F Warda
- Faculty of Pharmacy, Al-Mansoura University, Al-Mansoura, Egypt
| | - Hamdy I Awad
- Faculty of Pharmacy, Al-Mansoura University, Al-Mansoura, Egypt
| | - Taha A Mohamed
- Faculty of Medicine, Cairo University, Kasr AlAiny, Cairo, Egypt
| | - Samy Zaky
- Tropical Medicine Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Kahleova H, Levin S, Barnard N. Cardio-Metabolic Benefits of Plant-Based Diets. Nutrients 2017; 9:nu9080848. [PMID: 28792455 PMCID: PMC5579641 DOI: 10.3390/nu9080848] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/30/2017] [Accepted: 08/03/2017] [Indexed: 12/26/2022] Open
Abstract
Cardio-metabolic disease, namely ischemic heart disease, stroke, obesity, and type 2 diabetes, represent substantial health and economic burdens. Almost one half of cardio-metabolic deaths in the U.S. might be prevented through proper nutrition. Plant-based (vegetarian and vegan) diets are an effective strategy for improving nutrient intake. At the same time, they are associated with decreased all-cause mortality and decreased risk of obesity, type 2 diabetes, and coronary heart disease. Evidence suggests that plant-based diets may reduce the risk of coronary heart disease events by an estimated 40% and the risk of cerebral vascular disease events by 29%. These diets also reduce the risk of developing metabolic syndrome and type 2 diabetes by about one half. Properly planned vegetarian diets are healthful, effective for weight and glycemic control, and provide metabolic and cardiovascular benefits, including reversing atherosclerosis and decreasing blood lipids and blood pressure. The use of plant-based diets as a means of prevention and treatment of cardio-metabolic disease should be promoted through dietary guidelines and recommendations.
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Affiliation(s)
- Hana Kahleova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
| | - Susan Levin
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
| | - Neal Barnard
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
- George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA.
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Vegetarian Diet in Chronic Kidney Disease-A Friend or Foe. Nutrients 2017; 9:nu9040374. [PMID: 28394274 PMCID: PMC5409713 DOI: 10.3390/nu9040374] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/10/2017] [Accepted: 04/05/2017] [Indexed: 12/17/2022] Open
Abstract
Healthy diet is highly important, especially in patients with chronic kidney disease (CKD). Proper nutrition provides the energy to perform everyday activities, prevents infection, builds muscle, and helps to prevent kidney disease from getting worse. However, what does a proper diet mean for a CKD patient? Nutrition requirements differ depending on the level of kidney function and the presence of co-morbid conditions, including hypertension, diabetes, and cardiovascular disease. The diet of CKD patients should help to slow the rate of progression of kidney failure, reduce uremic toxicity, decrease proteinuria, maintain good nutritional status, and lower the risk of kidney disease-related secondary complications (cardiovascular disease, bone disease, and hypertension). It has been suggested that plant proteins may exert beneficial effects on blood pressure, proteinuria, and glomerular filtration rate, as well as results in milder renal tissue damage when compared to animal proteins. The National Kidney Foundation recommends vegetarianism, or part-time vegetarian diet as being beneficial to CKD patients. Their recommendations are supported by the results of studies demonstrating that a plant-based diet may hamper the development or progression of some complications of chronic kidney disease, such as heart disease, protein loss in urine, and the progression of kidney damage. However, there are sparse reports suggesting that a vegan diet is not appropriate for CKD patients and those undergoing dialysis due to the difficulty in consuming enough protein and in maintaining proper potassium and phosphorus levels. Therefore, this review will focus on the problem as to whether vegetarian diet and its modifications are suitable for chronic kidney disease patients.
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Beidokhti MN, Jäger AK. Review of antidiabetic fruits, vegetables, beverages, oils and spices commonly consumed in the diet. JOURNAL OF ETHNOPHARMACOLOGY 2017; 201:26-41. [PMID: 28257977 DOI: 10.1016/j.jep.2017.02.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/02/2017] [Accepted: 02/21/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Type 2 diabetes is the most common type of diabetes and its prevalence is rapidly increasing throughout the world. Modifications of lifestyle such as suitable diet and exercise programs along with pharmacotherapy and education of patients are beneficial therapies for patients with type 2 diabetes. The ethnopharmacological use of herbal medicines, many of them part of our diet as spices, vegetables and fruits, has been developed for the treatment of diabetes due to inexpensiveness, easy availability and few side effects. AIM OF THE STUDY Our aim is to present a review for researchers who are interested in the biologically active dietary plants traditionally utilized in the treatment of diabetes. MATERIALS AND METHODS Information was obtained from a literature search of electronic databases such as Google Scholar, Pubmed, Sci Finder and Cochrane. Common and scientific name of the fruits, vegetables, beverages, oils and spices and the words 'antidiabetic', 'hypoglycemic', 'anti-hyperglycemic', 'type 2 diabetes' were used as keywords for search. RESULTS Certain fruits and vegetables are functional foods and their consumption reduces the incidence of type 2 diabetes. Hypoglycemic effects of fruits and vegetables may be due to their inducing nature on pancreatic β-cells for insulin secretion, or bioactive compounds such as flavonoids, alkaloids and anthocyanins, which act as insulin-like molecules or insulin secretagogues. CONCLUSION This write-up covers hypoglycemic, anti-hyperglycemic and anti-diabetic activities of some dietary fruits, vegetables, beverages, oils and spices and their active hypoglycemic constituents. Including such plant species in the diet might improve management of type 2 diabetes.
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Affiliation(s)
- Maliheh Najari Beidokhti
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Anna K Jäger
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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Lammi C, Zanoni C, Arnoldi A, Vistoli G. Peptides Derived from Soy and Lupin Protein as Dipeptidyl-Peptidase IV Inhibitors: In Vitro Biochemical Screening and in Silico Molecular Modeling Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:9601-9606. [PMID: 27983830 DOI: 10.1021/acs.jafc.6b04041] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Dipeptidyl peptidase IV (DPP-IV) is a new molecular target correlated with the development of type 2 diabetes. Literature describes the identification of some inhibitory peptides from the hydrolysis of different food proteins. This article reports a study on six peptides from soybean and lupin proteins, i.e., Soy 1 (IAVPTGVA), Soy 2 (YVVNPDNDEN), Soy 3 (YVVNPDNNEN), Lup 1 (LTFPGSAED), Lup 2 (LILPKHSDAD), and Lup 3 (GQEQSHQDEGVIVR), which were screened for their capacity to inhibit the activity of DPP-IV, using an in vitro bioassay against human recombinant DPP-IV. Two peptides Soy 1 and Lup 1 resulted to be efficient inhibitors with IC50 values equal to 106 and 228 μM, respectively. A molecular docking analysis predicted the key molecular interactions, stabilizing the active peptides within DPP-IV enzyme. Soy and lupin proteins may be sources of DPP-IV inhibitory peptides potentially useful for the prevention of type 2 diabetes.
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Affiliation(s)
- Carmen Lammi
- Department of Pharmaceutical Sciences, University of Milan , 20122 Milan, Italy
| | - Chiara Zanoni
- Department of Pharmaceutical Sciences, University of Milan , 20122 Milan, Italy
| | - Anna Arnoldi
- Department of Pharmaceutical Sciences, University of Milan , 20122 Milan, Italy
| | - Giulio Vistoli
- Department of Pharmaceutical Sciences, University of Milan , 20122 Milan, Italy
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Messina M. Soy and Health Update: Evaluation of the Clinical and Epidemiologic Literature. Nutrients 2016; 8:E754. [PMID: 27886135 PMCID: PMC5188409 DOI: 10.3390/nu8120754] [Citation(s) in RCA: 230] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/17/2016] [Accepted: 11/18/2016] [Indexed: 01/10/2023] Open
Abstract
Soyfoods have long been recognized as sources of high-quality protein and healthful fat, but over the past 25 years these foods have been rigorously investigated for their role in chronic disease prevention and treatment. There is evidence, for example, that they reduce risk of coronary heart disease and breast and prostate cancer. In addition, soy alleviates hot flashes and may favorably affect renal function, alleviate depressive symptoms and improve skin health. Much of the focus on soyfoods is because they are uniquely-rich sources of isoflavones. Isoflavones are classified as both phytoestrogens and selective estrogen receptor modulators. Despite the many proposed benefits, the presence of isoflavones has led to concerns that soy may exert untoward effects in some individuals. However, these concerns are based primarily on animal studies, whereas the human research supports the safety and benefits of soyfoods. In support of safety is the recent conclusion of the European Food Safety Authority that isoflavones do not adversely affect the breast, thyroid or uterus of postmenopausal women. This review covers each of the major research areas involving soy focusing primarily on the clinical and epidemiologic research. Background information on Asian soy intake, isoflavones, and nutrient content is also provided.
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Affiliation(s)
- Mark Messina
- Nutrition Matters, Inc., 26 Spadina Parkway, Pittsfield, MA 01201, USA.
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Rice endosperm protein slows progression of fatty liver and diabetic nephropathy in Zucker diabetic fatty rats. Br J Nutr 2016; 116:1326-1335. [PMID: 27724997 DOI: 10.1017/s0007114516003512] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We previously reported that rice endosperm protein (REP) has renoprotective effects in Goto-Kakizaki rats, a non-obese diabetic model. However, whether these effects occur in obese diabetes remains unclear. This study aimed to clarify the effects of REP on obese diabetes, especially on fatty liver and diabetic nephropathy, using the obese diabetic model Zucker diabetic fatty (ZDF) rats. In total, 7-week-old male ZDF rats were fed diets containing 20 % REP or casein (C) for 8 weeks. Changes in fasting blood glucose levels and urinary markers were monitored during the experimental period. Hepatic lipids and metabolites were measured and renal glomeruli were observed morphologically. HbA1c levels were significantly lower in rats fed REP, compared with C (P<0·05). Compared with C in the liver, REP prevented lipid accumulation (total lipid, TAG and total cholesterol, P<0·01). Liver metabolome analysis indicated that levels of metabolites associated with glycolysis, the pentose phosphate pathway and carnitine metabolism were significantly greater in the REP group than in the C group (P<0·05), suggesting activation of both glucose catabolism and fatty acid oxidation. The metabolite increases promoted by REP may contribute to suppression of liver lipid accumulation. Urinary excretion of albumin and N-acetyl-β-d-glucosaminidase was significantly reduced in rats fed REP for 8 weeks (P<0·01). In addition, there was a distinct suppression of mesangial matrix expansion and glomerular hypertrophy in response to REP (P<0·01). Thus, REP had preventive effects on obese diabetes, fatty liver and diabetic nephropathy.
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Piccoli GB, Capizzi I, Vigotti FN, Leone F, D’Alessandro C, Giuffrida D, Nazha M, Roggero S, Colombi N, Mauro G, Castelluccia N, Cupisti A, Avagnina P. Low protein diets in patients with chronic kidney disease: a bridge between mainstream and complementary-alternative medicines? BMC Nephrol 2016; 17:76. [PMID: 27391228 PMCID: PMC4939031 DOI: 10.1186/s12882-016-0275-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 06/14/2016] [Indexed: 01/11/2023] Open
Abstract
Dietary therapy represents an important tool in the management of chronic kidney disease (CKD), mainly through a balanced reduction of protein intake aimed at giving the remnant nephrons in damaged kidneys a "functional rest". While dialysis, transplantation, and pharmacological therapies are usually seen as "high tech" medicine, non pharmacological interventions, including diets, are frequently considered lifestyle-complementary treatments. Diet is one of the oldest CKD treatments, and it is usually considered a part of "mainstream" management. In this narrative review we discuss how the lessons of complementary alternative medicines (CAMs) can be useful for the implementation and study of low-protein diets in CKD. While high tech medicine is mainly prescriptive, prescribing a "good" life-style change is usually not enough and comprehensive counselling is required; the empathic educational approach, on which CAMs are mainly, though not exclusively based, may support a successful personalized nutritional intervention.There is no gold-standard, low-protein diet for all CKD patients: from among a relatively vast choice, the best compliance is probably obtained by personalization. This approach interferes with the traditional RCT-based analyses which are grounded upon an assumption of equal preference of treatments (ideally blinded). Whole system approaches and narrative medicine, that are widely used in the study of CAMs, may offer ways to integrate EBM and personalised medicine in the search for innovative solutions respecting individualization, but gaining sound data, such as with partially-randomised patient preference trials.
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Affiliation(s)
- Giorgina Barbara Piccoli
- />Department of Clinical and Biological Sciences, SS Nephrology, ASOU san Luigi, University of Torino, Torino, Italy
- />Nephrologie, CH du Mans, Le Mans, France
| | - Irene Capizzi
- />Department of Clinical and Biological Sciences, SS Nephrology, ASOU san Luigi, University of Torino, Torino, Italy
- />Nephrologie, CH du Mans, Le Mans, France
| | - Federica Neve Vigotti
- />Department of Clinical and Biological Sciences, SS Nephrology, ASOU san Luigi, University of Torino, Torino, Italy
- />Nephrologie, CH du Mans, Le Mans, France
| | - Filomena Leone
- />Department of Surgery, SS Dietetics, città della salute e della scienza, University of Torino, Torino, Italy
| | - Claudia D’Alessandro
- />Department of Experimental and Clinical Medicine, SCDU Nephrology, University of Pisa, Pisa, Italy
| | - Domenica Giuffrida
- />Department of Surgery, SS Dietetics, città della salute e della scienza, University of Torino, Torino, Italy
| | - Marta Nazha
- />Department of Clinical and Biological Sciences, SS Nephrology, ASOU san Luigi, University of Torino, Torino, Italy
- />Nephrologie, CH du Mans, Le Mans, France
| | - Simona Roggero
- />Department of Clinical and Biological Sciences, SS Nephrology, ASOU san Luigi, University of Torino, Torino, Italy
- />Nephrologie, CH du Mans, Le Mans, France
| | - Nicoletta Colombi
- />Department of Clinical and Biological Sciences and of Oncology, Library, ASOU san Luigi, University of Torino, Torino, Italy
| | - Giuseppe Mauro
- />Department of Clinical and Biological Sciences and of Oncology, Library, ASOU san Luigi, University of Torino, Torino, Italy
| | - Natascia Castelluccia
- />Department of Clinical and Biological Sciences and of Oncology, Library, ASOU san Luigi, University of Torino, Torino, Italy
| | - Adamasco Cupisti
- />Department of Experimental and Clinical Medicine, SCDU Nephrology, University of Pisa, Pisa, Italy
| | - Paolo Avagnina
- />Department of Clinical and Biological Sciences, SSD Clinical Nutrition, ASOU san Luigi, University of Torino, Torino, Italy
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Lin Q, Mathieu O, Tompkins TA, Buckley ND, Green-Johnson JM. Modulation of the TNFα-induced gene expression profile of intestinal epithelial cells by soy fermented with lactic acid bacteria. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.02.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Zhang XM, Zhang YB, Chi MH. Soy Protein Supplementation Reduces Clinical Indices in Type 2 Diabetes and Metabolic Syndrome. Yonsei Med J 2016; 57:681-9. [PMID: 26996569 PMCID: PMC4800359 DOI: 10.3349/ymj.2016.57.3.681] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/04/2015] [Accepted: 06/01/2015] [Indexed: 12/21/2022] Open
Abstract
PURPOSE Clinical trials have studied the use of soy protein for treating type 2 diabetes (T2D) and metabolic syndrome (MS). The purpose of this study was to outline evidence on the effects of soy protein supplementation on clinical indices in T2D and MS subjects by performing a meta-analysis of randomized controlled trials (RCTs). MATERIALS AND METHODS We searched PubMed, EMBASE, and Cochrane databases up to March 2015 for RCTs. Pooled estimates and 95% confidence intervals (CIs) were calculated by the fixed-and-random-effects model. A total of eleven studies with eleven clinical variables met the inclusion criteria. RESULTS The meta-analysis showed that fasting plasma glucose (FPG) [weighted mean difference (WMD), -0.207; 95% CI, -0.374 to -0.040; p=0.015], fasting serum insulin (FSI) (WMD, -0.292; 95% CI, -0.496 to -0.088; p=0.005), homeostasis model of assessment for insulin resistance index (HOMA-IR) (WMD, -0.346; 95% CI, -0.570 to -0.123; p=0.002), diastolic blood pressure (DBP) (WMD, -0.230; 95% CI, -0.441 to -0.019; p=0.033), low-density lipoprotein cholesterol (LDL-C) (WMD, -0.304; 95% CI, -0.461 to -0.148; p=0.000), total cholesterol (TC) (WMD, -0.386; 95% CI, -0.548 to -0.225; p=0.000), and C-reactive protein (CRP) (WMD, -0.510; 95% CI, -0.722 to -0.299; p=0.000) are significant reduced with soy protein supplementation, compared with a placebo control group, in T2D and MS patients. Furthermore, soy protein supplementation for longer duration (≥6 mo) significantly reduced FPG, LDL-C, and CRP, while that for a shorter duration (<6 mo) significantly reduced FSI and HOMA-IR. CONCLUSION Soy protein supplementation could be beneficial for FPG, FSI, HOMA-IR, DBP, LDL-C, TC, and CRP control in plasma.
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Affiliation(s)
- Xi-Mei Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin, PR China.
| | - Yun-Bo Zhang
- Department of Environmental Hygiene, Harbin Medical University, Harbin, PR China
| | - Mei-Hua Chi
- Department of Teaching Experiment Center of Morphology, Harbin Medical University, Harbin, PR China
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Enhancement of glucose uptake in muscular cell by peptide fractions separated by electrodialysis with filtration membrane from salmon frame protein hydrolysate. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.01.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Jing Z, Wei-Jie Y. Effects of soy protein containing isoflavones in patients with chronic kidney disease: A systematic review and meta-analysis. Clin Nutr 2016; 35:117-124. [DOI: 10.1016/j.clnu.2015.03.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 01/30/2015] [Accepted: 03/22/2015] [Indexed: 12/25/2022]
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Viguiliouk E, Stewart SE, Jayalath VH, Ng AP, Mirrahimi A, de Souza RJ, Hanley AJ, Bazinet RP, Blanco Mejia S, Leiter LA, Josse RG, Kendall CWC, Jenkins DJA, Sievenpiper JL. Effect of Replacing Animal Protein with Plant Protein on Glycemic Control in Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients 2015; 7:9804-24. [PMID: 26633472 PMCID: PMC4690061 DOI: 10.3390/nu7125509] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 10/29/2015] [Accepted: 11/17/2015] [Indexed: 01/28/2023] Open
Abstract
UNLABELLED Previous research on the effect of replacing sources of animal protein with plant protein on glycemic control has been inconsistent. We therefore conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the effect of this replacement on glycemic control in individuals with diabetes. We searched MEDLINE, EMBASE, and Cochrane databases through 26 August 2015. We included RCTs ≥ 3-weeks comparing the effect of replacing animal with plant protein on HbA1c, fasting glucose (FG), and fasting insulin (FI). Two independent reviewers extracted relevant data, assessed study quality and risk of bias. Data were pooled by the generic inverse variance method and expressed as mean differences (MD) with 95% confidence intervals (CIs). Heterogeneity was assessed (Cochran Q-statistic) and quantified (I²-statistic). Thirteen RCTs (n = 280) met the eligibility criteria. Diets emphasizing a replacement of animal with plant protein at a median level of ~35% of total protein per day significantly lowered HbA1c (MD = -0.15%; 95%-CI: -0.26, -0.05%), FG (MD = -0.53 mmol/L; 95%-CI: -0.92, -0.13 mmol/L) and FI (MD = -10.09 pmol/L; 95%-CI: -17.31, -2.86 pmol/L) compared with control arms. Overall, the results indicate that replacing sources of animal with plant protein leads to modest improvements in glycemic control in individuals with diabetes. Owing to uncertainties in our analyses there is a need for larger, longer, higher quality trials. TRIAL REGISTRATION ClinicalTrials.gov registration number: NCT02037321.
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Affiliation(s)
- Effie Viguiliouk
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Sarah E Stewart
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Viranda H Jayalath
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Surgical Oncology, Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 2C4, Canada.
- Undergraduate Medical Education, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Alena Praneet Ng
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
| | - Arash Mirrahimi
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- School of Medicine, Faculty of Health Sciences, Queen's University, Kingston, ON K7L 3N6, Canada.
| | - Russell J de Souza
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Department of Clinical Epidemiology & Biostatistics, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada.
| | - Anthony J Hanley
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada.
- Department of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Richard P Bazinet
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Sonia Blanco Mejia
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
| | - Lawrence A Leiter
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Department of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
| | - Robert G Josse
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Department of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
| | - Cyril W C Kendall
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 5A2, Canada.
| | - David J A Jenkins
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Department of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
| | - John L Sievenpiper
- Toronto 3D Knowledge Synthesis and Clinical Trials Unit, Clinical Nutrition and Risk Factor Modification Center, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 2E8, Canada.
- Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON M5C 2T2, Canada.
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Three Peptides from Soy Glycinin Modulate Glucose Metabolism in Human Hepatic HepG2 Cells. Int J Mol Sci 2015; 16:27362-70. [PMID: 26580610 PMCID: PMC4661887 DOI: 10.3390/ijms161126029] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 12/14/2022] Open
Abstract
Ile-Ala-Val-Pro-Gly-Glu-Val-Ala (IAVPGEVA), Ile-Ala-Val-Pro-Thr-Gly-Val-Ala (IAVPTGVA) and Leu-Pro-Tyr-Pro (LPYP), three peptides deriving from soy glycinin hydrolysis, are known to regulate cholesterol metabolism in human hepatic HepG2 cells. We have recently demonstrated that the mechanism of action involves the activation of adenosine monophosphate-activated protein kinase (AMPK). This fact suggested a potential activity of the same peptides on glucose metabolism that prompted us to also investigate this aspect in the same cells. After treatment with IAVPGEVA, IAVPTGVA and LPYP, HepG2 cells were analyzed using a combination of molecular techniques, including western blot analysis, glucose uptake experiments and fluorescence microscopy evaluation. The results showed that these peptides are indeed able to enhance the capacity of HepG2 cells to uptake glucose, via glucose transporter 1 GLUT1 and glucose transporter 4 GLUT4 activation, through the stimulation of protein kinase B Akt and adenosine monophosphate-activated protein kinase AMPK pathways, both involved in glucose metabolism.
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Kahleova H, Pelikanova T. Vegetarian Diets in the Prevention and Treatment of Type 2 Diabetes. J Am Coll Nutr 2015; 34:448-58. [DOI: 10.1080/07315724.2014.976890] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Piccoli GB, Vigotti FN, Leone F, Capizzi I, Daidola G, Cabiddu G, Avagnina P. Low-protein diets in CKD: how can we achieve them? A narrative, pragmatic review. Clin Kidney J 2015; 8:61-70. [PMID: 25713712 PMCID: PMC4310428 DOI: 10.1093/ckj/sfu125] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 11/01/2014] [Indexed: 12/31/2022] Open
Abstract
Low-protein diets (LPDs) have encountered various fortunes, and several questions remain open. No single study, including the famous Modification of Diet in Renal Disease, was conclusive and even if systematic reviews are in favour of protein restriction, at least in non-diabetic adults, implementation is lagging. LPDs are considered difficult, malnutrition is a threat and compliance is poor. LPDs have been reappraised in this era of reconsideration of dialysis indications and timing. The definition of a normal-adequate protein diet has shifted in the overall population from 1 to 1.2 to 0.8 g/kg/day. Vegan-vegetarian diets are increasingly widespread, thus setting the groundwork for easier integration of moderate protein restriction in Chronic Kidney Disease. There are four main moderately restricted LPDs (0.6 g/kg/day). Two of them require careful planning of quantity and quality of food: a 'traditional' one, with mixed proteins that works on the quantity and quality of food and a vegan one, which integrates grains and legumes. Two further options may be seen as a way to simplify LPDs while being on the safe side for malnutrition: adding supplements of essential amino and keto acids (various doses) allows an easier shift from omnivorous to vegan diets, while protein-free food intake allows for an increase in calories. Very-low-protein diets (vLPDs: 0.3 g/kg/day) combine both approaches and usually require higher doses of supplements. Moderately restricted LPDs may be adapted to virtually any cuisine and should be tailored to the patients' preferences, while vLPDs usually require trained, compliant patients; a broader offer of diet options may lead to more widespread use of LPDs, without competition among the various schemas.
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Affiliation(s)
- Giorgina Barbara Piccoli
- Nephrology, Clinical and Biological Sciences Department, S. Luigi Gonzaga Hospital, University of Turin, Italy
| | - Federica Neve Vigotti
- Nephrology, Clinical and Biological Sciences Department, S. Luigi Gonzaga Hospital, University of Turin, Italy
| | - Filomena Leone
- Dietetics, Surgical Sciences Department, S. Anna Hospital, University of Torino, Turin, Italy
| | - Irene Capizzi
- Nephrology, Clinical and Biological Sciences Department, S. Luigi Gonzaga Hospital, University of Turin, Italy
| | - Germana Daidola
- Nephrology, S. Giovanni Battista Hospital, University of Turin, Italy
| | | | - Paolo Avagnina
- Clinical Nutrition, Clinical and Biological Sciences Department, S. Luigi Gonzaga Hospital, University of Turin, Italy
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Zhang J, Liu J, Su J, Tian F. The effects of soy protein on chronic kidney disease: a meta-analysis of randomized controlled trials. Eur J Clin Nutr 2014; 68:987-93. [PMID: 24939439 DOI: 10.1038/ejcn.2014.112] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 03/30/2014] [Accepted: 05/07/2014] [Indexed: 01/12/2023]
Abstract
BACKGROUND/OBJECTIVES There is a growing body of evidence to indicate that soy protein consumption may have a beneficial effect on kidney function. We performed a meta-analysis to evaluate the effects of soy protein consumption compared with animal protein consumption in patients with pre-dialysis chronic kidney disease (CKD). SUBJECTS/METHODS We conducted a structured electronic search of the databases PubMed, EMBASE, Cochrane Library and Chinese Biological Medicine for randomized controlled trials published up to March 2014. The outcome measures were serum creatinine (SCR), triglyceride (TG), total cholesterol (TC), calcium (Ca) and phosphorus concentrations. Weighted or standard mean differences were calculated for net changes using random-effects models. RESULTS The meta-analysis consisted of nine trials, comprising 197 subjects. Soy protein intake significantly reduced SCR and serum phosphorus concentrations. The mean difference was -6.231 μmol/l (95% confidence interval (CI): -11.109, -1.352 μmol/l) for SCR (P=0.012) and -0.804 (95% CI: -1.143, -0.464 μmol/l) for serum phosphorus (P=0.00). It also significantly reduced serum TG, with a pooled estimated change of -0.223 mmol/l (95% CI: -0.396, -0.051 mmol/l; P=0.011) after the exclusion of one trial indicated by sensitivity analyses. No statistically significant effects were observed for TC (-0.135 mmol/l (95% CI: -0.289, 0.019 mmol/l)) or Ca (0.023 mmol/l (95% CI: -0.016, 0.062 mmol/l)). CONCLUSIONS The meta-analysis suggested a protective effect of soy protein consumption on SCR and serum phosphorus concentrations in pre-dialysis CKD patients. It may also have a significant effect on lowering serum TG concentrations. However, nonsignificant effects on TC and Ca were observed. Evidence was limited because of the relatively small number of available trials and subjects.
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Affiliation(s)
- J Zhang
- Department of Nutrition, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - J Liu
- Department of Nutrition, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - J Su
- Department of Nutrition, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - F Tian
- Department of Nutrition, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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Liu ZM, Ho SC, Chen YM, Tang N, Woo J. Effect of whole soy and purified isoflavone daidzein on renal function--a 6-month randomized controlled trial in equol-producing postmenopausal women with prehypertension. Clin Biochem 2014; 47:1250-6. [PMID: 24877660 DOI: 10.1016/j.clinbiochem.2014.05.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 01/12/2023]
Abstract
OBJECTIVES The aim of the study was to examine the long-term effect of commonly used whole soy foods (soy flour) and purified daidzein (one major isoflavone and the precursor of equol) on renal function among prehypertensive postmenopausal women who are also equol producers, a population most likely to benefit from soy intervention. DESIGN AND METHODS This was a 6-month double-blind, randomized, placebo-controlled trial. Two hundred seventy eligible Chinese women were randomized to either one of the three treatments: 40 g soy flour (whole soy group), 40 g low-fat milk powder + 63 mg daidzein (daidzein group) or 40 g low-fat milk powder (placebo group) daily each for 6 months. Fasting blood and 24-h urine samples were collected at the beginning and end of trial. Serum creatinine, cystatin C, urea, angiotensin-converting enzyme, minerals and 24-h urinary creatinine and minerals were analyzed. Estimated glomerular filtration rate (eGFR) was calculated with the Cockcroft-Gault and the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations. RESULTS Two hundred fifty-three subjects completed the study according to the protocol. Urinary isoflavones indicated good compliance of participants. No significant changes were observed in most of renal parameters, however, there was a less decrease in eGFRcockcroft in 6-month change (p=0.044) and %change (p=0.031) with whole soy intake relative to milk placebo. Subgroup analysis among women with lowered renal function suggested whole soy consumption tended to improve markers of renal function relative to control. CONCLUSIONS Six-month consumption of whole soy tended to have a modest improvement of renal function in prehypertensive postmenopausal women with lowered renal function. Future trials in subjects with more declined renal function are necessary. TRIAL REGISTRATION The trial was registered in ClinicalTrials.gov with identifier of NCT01270737. (URL: http://clinicaltrials.gov/ct2/show/NCT01270737).
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Affiliation(s)
- Zhao-min Liu
- Department of Medicine &Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR
| | - Suzanne C Ho
- Division of Epidemiology, The Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong Kong SAR.
| | - Yu-ming Chen
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, PR China
| | - Nelson Tang
- Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong SAR
| | - Jean Woo
- Department of Medicine &Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR.
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Roblet C, Doyen A, Amiot J, Pilon G, Marette A, Bazinet L. Enhancement of glucose uptake in muscular cell by soybean charged peptides isolated by electrodialysis with ultrafiltration membranes (EDUF): activation of the AMPK pathway. Food Chem 2014; 147:124-30. [PMID: 24206695 DOI: 10.1016/j.foodchem.2013.09.108] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 07/11/2013] [Accepted: 09/18/2013] [Indexed: 11/16/2022]
Abstract
Soy peptides consumption has been associated with beneficial effects in type 2 diabetes patients. However, the peptide fractions responsible for these effects, and their mechanisms of action, have not been identified yet. In this study, we have isolated soybean peptides by electrodialysis with an ultrafiltration membrane (EDUF) at 50 V/100 kDa, and tested them for their capacity to improve glucose uptake in L6 muscle cells. We observed that these fractions were able to significantly enhance glucose uptake in the presence of insulin. The reported bioactivity would be due to the low molecular weight peptides (300-500 Da) recovered. Moreover, we observed that an enhancement of glucose uptake was correlated to the activation of the AMPK enzyme, well known for its capacity to increase glucose uptake in muscle cells. To our knowledge, this is the first time that bioactive peptides with glucose uptake activity have been isolated from a complex soy matrix, and that the implication of AMPK in it is demonstrated.
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Affiliation(s)
- Cyril Roblet
- Department of Food Sciences and Nutrition, Université Laval, Quebec, QC G1V 0A6, Canada; Institute of Nutrition and Functional Foods (INAF), Université Laval, Quebec, QC G1V 0A6, Canada.
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Mangano KM, Hutchins-Wiese HL, Kenny AM, Walsh SJ, Abourizk RH, Bruno RS, Lipcius R, Fall P, Kleppinger A, Kenyon-Pesce L, Prestwood KM, Kerstetter JE. Soy proteins and isoflavones reduce interleukin-6 but not serum lipids in older women: a randomized controlled trial. Nutr Res 2013; 33:1026-33. [PMID: 24267042 PMCID: PMC4452619 DOI: 10.1016/j.nutres.2013.08.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 08/02/2013] [Accepted: 08/13/2013] [Indexed: 11/27/2022]
Abstract
Soy foods contain several components, notably, isoflavones and amino acids, that may improve cardiovascular health. We evaluated the long-term effect of soy protein and/or soy isoflavones supplementation on serum lipids and inflammatory markers using a 1-year randomized, double-blind, placebo-control, clinical trial in 131 healthy ambulatory women older than 60 years. We hypothesized that soy protein, in combination with isoflavones, would have the largest positive effect on coronary heart disease risk factors (serum lipids and inflammatory markers) compared with either intervention alone and that, within groups receiving isoflavones, equol producers would have more positive effects on coronary heart disease risk factors than nonequol producers. After a 1-month baseline period, participants were randomized into 1 of 4 intervention groups: soy protein (18 g/d) and isoflavone tablets (105 mg/d isoflavone aglycone equivalents), soy protein and placebo tablets, control protein and isoflavone tablets, or control protein and placebo tablets. T Tests were used to assess differences between equol and nonequol producers. Ninety-seven women completed the trial. Consumption of protein powder and isoflavone tablets did not differ among groups, and compliance with study powder and tablets was 79% and 90%, respectively. After 1 year, in the entire population, there were either no or little effects on serum lipids and inflammatory markers, regardless of treatment group. Equol producers, when analyzed separately, had significant improvements in total cholesterol/high-density lipoprotein and low-density lipoprotein/high-density lipoprotein ratios (-5.9%, P = .02; -7.2%, P = .04 respectively). Soy protein and isoflavone (either alone or together) did not impact serum lipids or inflammatory markers. Therefore, they should not be considered an effective intervention to prevent cardiovascular disease because of lipid modification in healthy late postmenopausal women lacking the ability to produce equol.
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Affiliation(s)
- Kelsey M. Mangano
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT
- Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Boston, MA
| | - Heather L. Hutchins-Wiese
- Center on Aging, MC-5215, University of Connecticut Health Center, Farmington, CT
- Department of Dietetics and Human Nutrition, Eastern Michigan University, Ypsilanti, MI
| | - Anne M. Kenny
- Center on Aging, MC-5215, University of Connecticut Health Center, Farmington, CT
| | | | - Robin H. Abourizk
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT
| | - Richard S. Bruno
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT
- Department of Human Nutrition, The Ohio State University, Columbus, OH
| | - Rosanne Lipcius
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT
| | - Pamela Fall
- Clinical Research Center, MC-3805, University of Connecticut Health Center, Farmington, CT
| | - Alison Kleppinger
- Center on Aging, MC-5215, University of Connecticut Health Center, Farmington, CT
| | - Lisa Kenyon-Pesce
- Center on Aging, MC-5215, University of Connecticut Health Center, Farmington, CT
| | - Karen M. Prestwood
- Center on Aging, MC-5215, University of Connecticut Health Center, Farmington, CT
| | - Jane E. Kerstetter
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT
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Rice protein ameliorates the progression of diabetic nephropathy in Goto–Kakizaki rats with high-sucrose feeding. Br J Nutr 2013; 110:1211-9. [DOI: 10.1017/s0007114513000354] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The effect of rice protein (RP) on diabetic nephropathy in non-obese, spontaneous type 2 diabetic Goto–Kakizaki (GK) rats was investigated. GK rats at 7 weeks of age were fed 20 % RP or casein (C) in standard or high-sucrose diets for 10 weeks. Plasma total cholesterol, TAG, alkaline phosphatase (ALP), adiponectin, creatinine and urinary albumin excretion (UAE) were measured and renal histology was evaluated. Compared with C, RP lowered plasma TAG and improved plasma adiponectin levels in GK rats fed the standard diet (P< 0·05), and also lowered total cholesterol and ALP in high-sucrose-fed GK rats (P< 0·05). RP markedly suppressed the sharp increase in UAE when GK rats were fed high-sucrose diets (P< 0·05), and prevented glomerular mesangial matrix expansion in the deep renal cortex near the corticomedullary junction (P< 0·05). These results strongly indicate that dietary RP can ameliorate the progression of diabetic nephropathy at an early stage compared with C.
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Kwak JH, Lee JH, Ahn CW, Park SH, Shim ST, Song YD, Han EN, Lee KH, Chae JS. Black Soy Peptide Supplementation Improves Glucose Control in Subjects with Prediabetes and Newly Diagnosed Type 2 Diabetes Mellitus. J Med Food 2010; 13:1307-12. [DOI: 10.1089/jmf.2010.1075] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Jung Hyun Kwak
- Interdisciplinary Course of Science for Aging, Graduate School, Yonsei University, Republic of Korea
- National Research Laboratory for Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, Yonsei University, Republic of Korea
| | - Jong Ho Lee
- National Research Laboratory for Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, Yonsei University, Republic of Korea
- Research Institute of Science for Aging, Yonsei University, Republic of Korea
| | - Chang-Won Ahn
- Research and Development Center, Nong Shim Co., Ltd., CHA University, Seoul, Republic of Korea
| | - Soo-Hyun Park
- Research and Development Center, Nong Shim Co., Ltd., CHA University, Seoul, Republic of Korea
| | - Sun-Taek Shim
- Research and Development Center, Nong Shim Co., Ltd., CHA University, Seoul, Republic of Korea
| | - Yong Duk Song
- Department of Endocrinology and Metabolism, National Health Insurance Cooperation Ilsan Hospital, Goyang, Kyungki Province, Republic of Korea
| | - Eun Narae Han
- Interdisciplinary Course of Science for Aging, Graduate School, Yonsei University, Republic of Korea
| | - Ki Ho Lee
- Department of Family Medicine and CHA Anti-aging Institute, CHA General Hospital, College of Medicine, CHA University, Seoul, Republic of Korea
| | - Jey-Sook Chae
- National Research Laboratory for Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, Yonsei University, Republic of Korea
- Research Institute of Science for Aging, Yonsei University, Republic of Korea
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Messina M, Messina V. The role of soy in vegetarian diets. Nutrients 2010; 2:855-88. [PMID: 22254060 PMCID: PMC3257705 DOI: 10.3390/nu2080855] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 07/31/2010] [Accepted: 08/03/2010] [Indexed: 12/30/2022] Open
Abstract
Soyfoods have long been prized among vegetarians for both their high protein content and versatility. Soybeans differ markedly in macronutrient content from other legumes, being much higher in fat and protein, and lower in carbohydrate. In recent years however, soyfoods and specific soybean constituents, especially isoflavones, have been the subject of an impressive amount of research. Nearly 2,000 soy-related papers are published annually. This research has focused primarily on the benefits that soyfoods may provide independent of their nutrient content. There is particular interest in the role that soyfoods have in reducing risk of heart disease, osteoporosis and certain forms of cancer. However, the estrogen-like effects of isoflavones observed in animal studies have also raised concerns about potential harmful effects of soyfood consumption. This review addresses questions related to soy and chronic disease risk, provides recommendations for optimal intakes, and discusses potential contraindications. As reviewed, the evidence indicates that, with the exception of those individuals allergic to soy protein, soyfoods can play a beneficial role in the diets of vegetarians. Concerns about adverse effects are not supported by the clinical or epidemiologic literature. Based on the soy intake associated with health benefits in the epidemiologic studies and the benefits noted in clinical trials, optimal adult soy intake would appear to be between two and four servings per day.
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Affiliation(s)
- Mark Messina
- Department of Nutrition, School of Public Health, Loma Linda University, Loma Linda, California, USA
- Nutrition Matters, Inc., Port Townsend, WA 98368, USA;
| | - Virginia Messina
- Department of Nutrition, School of Public Health, Loma Linda University, Loma Linda, California, USA
- Nutrition Matters, Inc., Port Townsend, WA 98368, USA;
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Venkatachalam MA, Griffin KA, Lan R, Geng H, Saikumar P, Bidani AK. Acute kidney injury: a springboard for progression in chronic kidney disease. Am J Physiol Renal Physiol 2010; 298:F1078-94. [PMID: 20200097 DOI: 10.1152/ajprenal.00017.2010] [Citation(s) in RCA: 387] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Recently published epidemiological and outcome analysis studies have brought to our attention the important role played by acute kidney injury (AKI) in the progression of chronic kidney disease (CKD) to end-stage renal disease (ESRD). AKI accelerates progression in patients with CKD; conversely, CKD predisposes patients to AKI. This research gives credence to older, well-thought-out wisdom that recovery from AKI is often not complete and is marked by residual structural damage. It also mirrors older experimental observations showing that unilateral nephrectomy, a surrogate for loss of nephrons by disease, compromises structural recovery and worsens tubulointerstitial fibrosis after ischemic AKI. Moreover, review of a substantial body of work on the relationships among reduced renal mass, hypertension, and pathology associated with these conditions suggests that impaired myogenic autoregulation of blood flow in the setting of hypertension, the arteriolosclerosis that results, and associated recurrent ischemic AKI in microscopic foci play important roles in the development of progressively increasing tubulointerstitial fibrosis. How nutrition, an additional factor that profoundly affects renal disease progression, influences these events needs reevaluation in light of information on the effects of calories vs. protein and animal vs. vegetable protein on injury and progression. Considerations based on published and emerging data suggest that a pathology that develops in regenerating tubules after AKI characterized by failure of differentiation and persistently high signaling activity is the proximate cause that drives downstream events in the interstitium: inflammation, capillary rarefaction, and fibroblast proliferation. In light of this information, we advance a comprehensive hypothesis regarding the pathophysiology of AKI as it relates to the progression of kidney disease. We discuss the implications of this pathophysiology for developing efficient therapeutic strategies to delay progression and avert ESRD.
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Affiliation(s)
- Manjeri A Venkatachalam
- Dept. of Pathology, Univ. of Texas Health Science Center, 7703 Floyd Curl Dr., San Antonio, TX 78229, USA.
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Rotimi SO, Olayiwola I, Ademuyiwa O, Adamson I. Inability of Legumes to Reverse Diabetic-Induced Nephropathy in Rats Despite Improvement in Blood Glucose and Antioxidant Status. J Med Food 2010; 13:163-9. [DOI: 10.1089/jmf.2008.0293] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Ibiyemi Olayiwola
- Department of Nutrition and Dietetics, University of Agriculture, Abeokuta, Ogun State, Nigeria
| | - Oladipo Ademuyiwa
- Department of Biochemistry, University of Agriculture, Abeokuta, Ogun State, Nigeria
| | - Ishola Adamson
- Department of Biochemistry, University of Agriculture, Abeokuta, Ogun State, Nigeria
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Azadbakht L, Esmaillzadeh A. Soy-protein consumption and kidney-related biomarkers among type 2 diabetics: a crossover, randomized clinical trial. J Ren Nutr 2009; 19:479-86. [PMID: 19758824 DOI: 10.1053/j.jrn.2009.06.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Renal disease is a major problem among diabetic patients. The type of protein consumed may affect alterations in kidney-related biomarkers in these patients. This study sought to assess the effects of soy-protein consumption on renal-related markers among type 2 diabetic patients with nephropathy. METHODS A crossover, randomized clinical trial was conducted among 14 patients (10 men and 4 women). One diet contained 0.8 g/kg protein (70% animal and 30% vegetable proteins), and a similar diet contained the same amount of protein with 35% animal protein, 35% soy protein, and 30% other vegetable proteins. These two diets were prescribed in each phase of the trial for 7 weeks. There was a 4-week washout between the two phases of the study. RESULTS Consumption of soy protein reduced urinary urea nitrogen (-0.9 +/- 0.8 vs. 0.2 +/- 0.6 mg/dL, respectively, SD; P < .001), proteinuria (-78 +/- 37 vs. 42 +/- 39 mg/day, respectively, SD; P < .001), blood sodium (-2 +/- 0.04 vs. 2.0 +/- 0.06 mg/dL, respectively, SD; P < .01), and serum phosphorus (-0.03 +/- 0.2 vs. 0.2 +/- 0.3 mg/dL, respectively, SD; P < .01) compared with animal protein. Serum and urinary creatinine, blood urea nitrogen, serum calcium, and potassium levels were not significantly changed in soy-protein versus anima-protein consumption. CONCLUSION Soy-protein consumption reduces proteinuria in type 2 diabetes with nephropathy.
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Affiliation(s)
- Leila Azadbakht
- Department of Nutrition, School of Public Health, and Food Security and Nutrition Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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Pipe EA, Gobert CP, Capes SE, Darlington GA, Lampe JW, Duncan AM. Soy protein reduces serum LDL cholesterol and the LDL cholesterol:HDL cholesterol and apolipoprotein B:apolipoprotein A-I ratios in adults with type 2 diabetes. J Nutr 2009; 139:1700-6. [PMID: 19605528 DOI: 10.3945/jn.109.109595] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Type 2 diabetes is highly prevalent in North America and is associated with increased risk of cardiovascular disease (CVD). Evidence supports a role for soy protein in the reduction of serum lipids related to CVD risk; however, few studies have focused on adults with type 2 diabetes who are not on lipid-lowering medications and/or do not have diabetic complications. The purpose of this study was to determine the effect of soy protein isolate (SPI) consumption on serum lipids in adults with diet-controlled type 2 diabetes. Using a double-blind, randomized, crossover, placebo-controlled intervention study design, adults with diet-controlled type 2 diabetes (n = 29) consumed SPI (80 mg/d aglycone isoflavones) or milk protein isolate (MPI) for 57 d each separated by a 28-d washout period. Twenty-four-hour urine samples were collected on d 54-56 of each treatment for analysis of isoflavones and blood was collected on d 1 and 57 of each treatment and analyzed for serum lipids and apolipoproteins. SPI consumption increased urinary isoflavones compared with MPI. SPI consumption reduced serum LDL cholesterol (P = 0.04), LDL cholesterol:HDL cholesterol (P = 0.02), and apolipoprotein B:apolipoprotein A-I (P = 0.05) compared with MPI. SPI did not affect serum total cholesterol, HDL cholesterol, triacylglycerol, apolipoprotein B, or apolipoprotein A-I. These data demonstrate that consumption of soy protein can modulate some serum lipids in a direction beneficial for CVD risk in adults with type 2 diabetes.
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Affiliation(s)
- Elizabeth A Pipe
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1
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Abstract
Evidence from observational, animal and human studies supports a role for soya protein and its isoflavones in the improvement of glycaemic control in type 2 diabetes. The objective of the present study was to determine the effect of isoflavone-rich soya protein on markers of glycaemic control in adults with type 2 diabetes. Using a randomised, crossover, double-blind, placebo-controlled design, adults with diet-controlled type 2 diabetes (n 29) consumed soya protein isolate (SPI) and milk protein isolate (MPI) for 57 d each separated by a 4-week washout. Blood was collected on days 1 and 57 of each treatment period for analysis of fasting HbA1C, and fasting and postprandial glucose, insulin and calculated indices of insulin sensitivity and resistance. Urine samples of 24 h were collected at the end of each treatment period for analysis of isoflavones. Urinary isoflavone excretion was significantly greater following consumption of SPI compared with MPI, and 20.7 % of the subjects (n 6) were classified as equol excretors. SPI consumption did not significantly affect fasting or postprandial glucose or insulin, fasting HbA1C, or indices of insulin sensitivity and resistance. These data do not support a role for soya protein in the improvement of glycaemic control in adults with diet-controlled type 2 diabetes and contribute to a limited literature of human studies on the effects of soya protein on the management of type 2 diabetes.
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