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Macan TP, Magenis ML, Damiani AP, Monteiro IDO, Silveira GDB, Zaccaron RP, Silveira PCL, Teixeira JPF, Gajski G, Andrade VMD. Brazil nut consumption reduces DNA damage in overweight type 2 diabetes mellitus patients. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 895:503739. [PMID: 38575248 DOI: 10.1016/j.mrgentox.2024.503739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 02/15/2024] [Accepted: 02/22/2024] [Indexed: 04/06/2024]
Abstract
Type 2 diabetes mellitus (T2D) is a metabolic disease, which occurs largely due to unhealthy lifestyle. As oxidative stress is believed to promote T2D, by inducing damage to lipids, proteins, and DNA, appropriate dietary interventions seem critical to prevent, manage, and even reverse this condition. Brazil nuts (Bertholletia excelsa, H.B.K.) are nature's richest source of selenium, a mineral that has shown several health benefits. Therefore, this study aims to assess the effects of selenium consumption, through Brazil nuts, on biochemical and oxidative stress parameters, and genomic instability in T2D patients. We recruited 133 patients with T2D, registered in the Integrated Clinics of the University of Southern Santa Catarina (Brazil). Participants consumed one Brazil nut a day for six months. Blood samples and exfoliated buccal cells were collected at the beginning and the end of the intervention. The glycemic profile, lipid profile, renal profile and hepatic profile, DNA damage and selenium content were evaluated. A total of 74 participants completed the intervention. Brazil nut consumption increased selenium and GSH levels, GPx, and CAT activity while DCF and nitrites levels decreased. Total thiols increased, and protein carbonyl and MDA levels decreased. Levels of baseline and oxidative DNA damage in T2D patients were significantly decreased, as well as the frequency of micronuclei and nuclear buds. The fasting glucose levels, HDL and LDL cholesterol, and GGT levels that increased significantly in patients with type 2 diabetes were significantly reduced with nut consumption. Our results show an increase in antioxidant activity, along with reductions of protein and lipid oxidation as well as DNA damage, suggesting that Brazil nut consumption could be an ally in reducing oxidative stress and modulating the genomic instability in T2D patients.
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Affiliation(s)
- Tamires Pavei Macan
- Laboratory of Translational Biomedicine, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil; Environmental Health Department, Portuguese National Institute of Health Dr. Ricardo Jorge, Porto, Portugal
| | - Marina Lummertz Magenis
- Laboratory of Translational Biomedicine, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Adriani Paganini Damiani
- Laboratory of Translational Biomedicine, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Isadora de Oliveira Monteiro
- Laboratory of Translational Biomedicine, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Gustavo De Bem Silveira
- Laboratory of Experimental Physiopathology, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Rubya Pereira Zaccaron
- Laboratory of Experimental Physiopathology, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Paulo Cesar Lock Silveira
- Laboratory of Experimental Physiopathology, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | | | - Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Vanessa Moraes de Andrade
- Laboratory of Translational Biomedicine, Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, SC, Brazil.
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Almeida PP, Da Cruz BO, Thomasi B, Menezes ÁC, Brito ML, Costa NDS, Ito RVA, Degani VAN, Daleprane JB, Magliano DC, Tavares-Gomes AL, Stockler-Pinto MB. Brazil Nut-Enriched Diet Modulates Enteric Glial Cells and Gut Microbiota in an Experimental Model of Chronic Kidney Disease. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024; 43:201-212. [PMID: 37611162 DOI: 10.1080/27697061.2023.2247057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 08/05/2023] [Accepted: 08/08/2023] [Indexed: 08/25/2023]
Abstract
Introduction: Chronic kidney disease (CKD) promotes gut dysbiosis, and enteric glial reactivity, a feature of intestinal inflammation. Brazil nut modulated enteric glial profile in healthy animals and could modulate these cells in 5/6 nephrectomized rats.Methods: A 5/6 nephrectomy-induced CKD and Sham-operated rats were divided as follows: CKD and Sham received a standard diet and CKD-BN and Sham-BN received a 5% Brazil nut enriched-diet. The protein content of glial fibrillary acid protein (GFAP), enteric glial marker, and GPx protein content and activity were assessed in the colon. The major phyla of gut microbiota were assessed.Results: CKD-BN group presented a decrease in GFAP content (p = 0.0001). The CKD-BN group modulated the abundance of Firmicutes, increasing its proportion compared to the CKD group. The CKD-BN group showed increased GPx activity in the colon (p = 0.0192), despite no significant difference in protein content.Conclusion: Brazil nut-enriched diet consumption decreased enteric glial reactivity and modulated gut microbiota in the CKD experimental model.
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Affiliation(s)
- Patricia Pereira Almeida
- Cardiovascular Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Beatriz Oliveira Da Cruz
- Cardiovascular Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Beatriz Thomasi
- Department of Physiology, Neuroscience Program, Michigan State University (MSU), East Lansing, Michigan, USA
| | - Ágatha Cristie Menezes
- Cardiovascular Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Michele Lima Brito
- Pathology Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Nathalia da Silva Costa
- Cardiovascular Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | | | - Viviane Alexandre Nunes Degani
- Clinic and Animal Reproduction Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Julio Beltrame Daleprane
- Laboratory for Studies of Interactions Between Nutrition and Genetics, LEING, Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - D'Angelo Carlo Magliano
- Pathology Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Ana Lúcia Tavares-Gomes
- Neurosciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Milena Barcza Stockler-Pinto
- Cardiovascular Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
- Pathology Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
- Nutrition Sciences Post Graduate Program, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
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Effects of Regular Brazil Nut ( Bertholletia excelsa H.B.K.) Consumption on Health: A Systematic Review of Clinical Trials. Foods 2022; 11:foods11182925. [PMID: 36141050 PMCID: PMC9498495 DOI: 10.3390/foods11182925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
The Brazil nut (BN) is a promising food due to its numerous health benefits, but it is still necessary to systematically review the scientific evidence on these benefits. Thus, we examined the effects of regular BN consumption on health markers in humans according to the health state (with specific diseases or not) of the subjects. PubMed, Embase®, and Scielo databases were used to search for clinical trials. The PRISMA guideline was used to report the review, and the risk of bias for all studies was assessed. Twenty-four studies were included in the present review, of which fifteen were non-randomized. BNs were consumed in the context of a habitual free-living diet in all studies. Improvement in antioxidant status through increased levels of selenium and/or glutathione peroxidase activity in plasma, serum, whole blood, and/or erythrocytes was observed in all studies that evaluated antioxidant status, regardless of the health state of the sample. In addition, healthy subjects improved lipid markers and fasting glucose. Subjects with obesity had improvement in markers of lipid metabolism. Subjects with type 2 diabetes mellitus or dyslipidemia improved oxidative stress or DNA damage. Subjects undergoing hemodialysis benefited greatly from BN consumption, as they improved lipid profile markers, oxidative stress, inflammation, and thyroid function. Older adults with mild cognitive impairment improved verbal fluency and constructional praxis, and controversial results regarding the change in a marker of lipid peroxidation were observed in subjects with coronary artery disease. In conclusion, the benefits of BN consumption were found in different pathways of action and study populations.
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da Silva Costa N, Almeida PP, Da Cruz BO, Brito ML, Maldonado-Campos J, Menezes AC, Figueiredo MS, Magliano DAC, Pereira AD, Stockler-Pinto MB. Supplementation of diet with Brazil nut modulates body composition, bone parameters, and lipid peroxidation in Wistar rats. J Food Biochem 2022; 46:e14294. [PMID: 35762459 DOI: 10.1111/jfbc.14294] [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: 12/14/2021] [Revised: 05/13/2022] [Accepted: 06/06/2022] [Indexed: 11/30/2022]
Abstract
Oxidative stress, adipose tissue, and bone compartments can be disturbed in chronic diseases. Non-pharmacological strategies, such as Brazil nuts (BNs), can improve these parameters. This study evaluated the effects of BN supplementation at different concentrations on body composition, lipid profile, and peroxidation in healthy rats. Male Wistar rats were divided into three groups: control (CT), Brazil nut 5% (BN5), and Brazil nut 10% (BN10) groups. Body composition, brown adipose tissue (BAT), plasma lipid peroxidation, and lipid profile were evaluated in the three groups. The BN5 group showed an improvement in all bone parameters compared with that of the CT group (p < .0001). The BN5 and BN10 groups showed reduced plasma lipid peroxidation compared with that of the CT group (p = .0009), whereas the BN10 group presented lower BAT lipid peroxidation than that of the other groups (p = .01). High-density lipoprotein-cholesterol (HDL-c) levels were higher in the BN5 group than in the CT group (p = .01). Conclusively, the use of BNs in a controlled manner promoted improvement in bone parameters, HDL-c levels, and lipid peroxidation in healthy rats. PRACTICAL APPLICATIONS: Nuts has been included in the diet because of their versatility, acceptance, and easy access. Among them, Brazil nut (BN) is considered one of the major known food sources of selenium as well as a source of fibers, unsaturated fatty acids, and phenolic compounds. Studies have shown that BN supplementation is effective in reducing oxidative stress, inflammation, lipid peroxidation, and selenium deficiency when used as a non-pharmacological strategy in experimental models of chronic diseases and in clinical trials. The present study showed that controlled administration of BN improved bone parameters, high-density lipoprotein-cholesterol levels, and lipid peroxidation in healthy rats. Therefore, BN is a promising non-pharmacological agent for the prevention of the onset of chronic non-communicable diseases.
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Affiliation(s)
- Nathalia da Silva Costa
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
| | - Patricia Pereira Almeida
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
| | - Beatriz Oliveira Da Cruz
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
| | - Michele Lima Brito
- Nutrition Graduation, Fluminense Federal University (UFF), Niterói, Brazil
| | | | - Agatha Cristie Menezes
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
| | | | - D' Angelo Carlo Magliano
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
| | | | - Milena Barcza Stockler-Pinto
- Cardiovascular Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil.,Nutrition Sciences Graduation Program, Fluminense Federal University (UFF), Niterói, Brazil
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Caldas APS, Rocha DMUP, Dionísio AP, Hermsdorff HHM, Bressan J. Brazil and cashew nuts intake improve body composition and endothelial health in women at cardiometabolic risk (Brazilian Nuts Study): a randomized controlled trial. Br J Nutr 2022; 128:1-38. [PMID: 35193718 DOI: 10.1017/s000711452100475x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Several mechanisms have been proposed for the beneficial effect of nuts on health. However, Brazil and cashew nuts remain the least studied. We aim to evaluate the effect of these nuts within an energy-restricted diet on body weight, body composition, cardiometabolic markers, and endothelial function in cardiometabolic risk women. Brazilian nuts study is a randomized controlled parallel 8-week dietary intervention trial. Forty women were randomly allocated to 1) Control group: Energy-restricted diet without nuts, n= 19 or, 2) Brazil and cashew nuts group (BN-Group): Energy-restricted diet containing daily 45 g of nuts (15 g of Brazil nuts + 30g of cashew nuts), n= 21. At the beginning and final intervention, anthropometry, body composition, and blood pressure were measured. Fasting blood sampling was obtained to evaluate lipid profile, glucose homeostasis, and endothelial function markers. After 8-week, plasma selenium concentration increased in BN-group (∆ = + 31.5 ± 7.8 μg/L; p= 0.001). Brazil and cashew nuts intake reduced total body fat (-1.3 ± 0.4 %) parallel to improvement of lean mass percentage in BN-group compared to the control. Besides, the soluble adhesion molecule VCAM-1 decreased (24.03 ± 15.7 pg/mL vs. -22.2 ± 10.3 pg/mL; p= 0.019) after Brazil and cashew nuts intake compared to the control. However, lipid and glucose profile markers, apolipoproteins, and blood pressure remained unchanged after the intervention. Thus, the addition of Brazil and cashew nuts to an energy-restricted diet can be a healthy strategy to improve body composition, selenium status, and endothelial inflammation in cardiometabolic risk women.
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Affiliation(s)
- Ana Paula Silva Caldas
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | | | - Ana Paula Dionísio
- Embrapa Agroindústria Tropical, Sara Mesquita Street, 2270, 60511-110, Fortaleza, Ceará, Brazil
| | | | - Josefina Bressan
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
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Almeida PPD, Thomasi BBDM, Costa NDS, Valdetaro L, Pereira AD, Gomes ALT, Stockler-Pinto MB. Brazil Nut ( Bertholletia excelsa H.B.K) Retards Gastric Emptying and Modulates Enteric Glial Cells in a Dose-Dependent Manner. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2022; 41:157-165. [PMID: 33301378 DOI: 10.1080/07315724.2020.1852981] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/04/2020] [Accepted: 11/15/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND The role of food and nutrients in the regulation of enteric glial cell functions is unclear. Some foods influence enteric neurophysiology and can affect glial cell functions that include regulation of the intestinal barrier, gastric emptying, and colonic transit. Brazil nuts are the most abundant natural source of selenium, unsaturated fatty acids, fibers, and polyphenols. OBJECTIVE The study investigated the effects of a Brazil nut-enriched diet on enteric glial cells and gastrointestinal transit. METHODS Two-month-old male Wistar rats were randomized to a standard diet (control group, CG), standard diet containing 5% (wt/wt) Brazil nut (BN5), and standard diet containing 10% (wt/wt) Brazil nut (BN10) (n = 9 per group). After eight weeks, the animals underwent constipation and gastric emptying tests to assess motility. Evaluations of colonic immunofluorescence staining for glial fibrillary acidic protein (GFAP) and myenteric ganglia area were performed. RESULTS The BN5 group showed increased weight gain while the BN10 group did not (p < 0.0001). The BN10 group showed higher gastric residue amounts compared to the other groups (p = 0.0008). The colon exhibited an increase in GFAP immunoreactivity in the BN5 group compared to that in the other groups (p = 0.0016), and the BN10 group presented minor immunoreactivity compared to the CG (p = 0.04). The BN10 group presented a minor ganglia area compared to the CG (p = 0.0155). CONCLUSION The Brazil nut-enriched diet modified the gastric residual, colonic GFAP immunoreactivity, and myenteric ganglia area after eight weeks in healthy male Wistar rats.
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Affiliation(s)
| | | | - Nathalia da Silva Costa
- Postgraduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Luisa Valdetaro
- Postgraduate Program in Neurosciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Aline D'Avila Pereira
- Postgraduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Ana Lúcia Tavares Gomes
- Postgraduate Program in Neurosciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
| | - Milena Barcza Stockler-Pinto
- Postgraduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
- Postgraduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil
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da Cruz BO, Cardozo LFMD, Coutinho-Wolino KS, Mesquita CT, Leal VO, Mafra D, Stockler-Pinto MB. Brazil Nut Supplementation Does Not Regulate PPARβ/δ Signaling Pathway in Peripheral Blood Mononuclear Cells from Coronary Artery Disease Patients. J Am Coll Nutr 2021; 41:780-787. [PMID: 34516363 DOI: 10.1080/07315724.2021.1963882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Peroxisome proliferator-activated receptor (PPAR)β/δ activation is a potential target for modulation of inflammation in cardiovascular disease. PPARβ/δ activation depends on the presence of a ligand, which may be pharmacological or natural, such as bioactive compounds and nutrients. Due to its composition, rich in selenium and unsaturated fatty acids, Brazil nuts have been related to reduced oxidative stress and inflammation in chronic non-communicable diseases and could regulate PPARβ/δ. This study aimed to evaluate the effects of Brazil nut supplementation on PPARβ/δ mRNA expression in patients with Coronary Artery Disease (CAD). METHODS A secondary analysis of a randomized controlled clinical trial was performed with 36 CAD patients. Patients were randomly assigned to either the Supplementation group or the control group and followed up for three months. The Supplementation group consumed 1 Brazil nut/day; the control group did not receive any intervention. At the baseline and after three months, analysis of gene expression and biochemical parameters linked to inflammatory biomarkers and oxidative stress was carried out. RESULTS In the supplementation group, no significant change was observed in PPARβ/δ (0.9 ± 0.5 vs 1.2 ± 0.6; p = 0.178) and NF-κB (1.6 ± 1.5 vs 0.8 ± 0.30, p = 0.554) mRNA expression. There were no significant changes in both groups concerning all the other biochemical parameters. CONCLUSION One Brazil nut per day for three months was not able to increase the PPARβ/δ expression in CAD patients.
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Affiliation(s)
- Beatriz Oliveira da Cruz
- Graduate Program in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Clinical Research Unit, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil
| | - Ludmila Ferreira Medeiros de Cardozo
- Graduate Program in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Clinical Research Unit, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil
| | - Karen Salve Coutinho-Wolino
- Clinical Research Unit, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil.,Graduate Program in Nutrition Sciences, Universidade Federal Fluminense, Niterói, Brazil
| | - Claudio Tinoco Mesquita
- Graduate Program in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Hospital Universitário Antonio Pedro - EBSERH-UFF, Niterói, Brazil
| | - Viviane Oliveira Leal
- Hospital Universitário Pedro Ernesto, Universidade Estadual do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Denise Mafra
- Graduate Program in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Clinical Research Unit, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil.,Graduate Program in Nutrition Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Graduate Program in Medical Sciences, Universidade Federal Fluminense, Niterói, Brazil
| | - Milena Barcza Stockler-Pinto
- Graduate Program in Cardiovascular Sciences, Universidade Federal Fluminense, Niterói, Brazil.,Clinical Research Unit, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil.,Graduate Program in Nutrition Sciences, Universidade Federal Fluminense, Niterói, Brazil
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Barroso CF, Pires LV, Santos LB, Henriques GS, Pessoa PP, de Araújo GN, de Araújo COD, Oliveira CMC, Maia CSC. Selenium Nutritional Status and Glutathione Peroxidase Activity and Its Relationship with Hemodialysis Time in Individuals Living in a Brazilian Region with Selenium-Rich Soil. Biol Trace Elem Res 2021; 199:2535-2542. [PMID: 32959338 DOI: 10.1007/s12011-020-02388-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 09/10/2020] [Indexed: 01/25/2023]
Abstract
Suboptimal selenium status may impair the antioxidant defense system in patients undergoing hemodialysis, compromising the selenoenzyme glutathione peroxidase activity. To evaluate the association between the duration of hemodialysis, nutritional selenium status, glutathione peroxidase activity (GPx), and thiobarbituric acid reactive substance (TBARS) levels in patients with chronic renal failure undergoing hemodialysis in a region of selenium-rich soils (Ceará, Northeast Brazil). The case-control study of 75 individuals aged 18 to 88 years was allocated between two groups: hemodialysis (n = 41) and control (n = 34). Plasma and erythrocytes selenium levels were determined by inductively coupled plasma optical emission spectrometry. The GPx activity and TBARS levels were also evaluated. In addition, the hemodialysis group was stratified according to the duration of treatment (≤ 59 months and ≥ 60 months). The Mann-Whitney test, Student's t test, and Pearson's or Spearman's correlation were applied according to the data distribution. Moreover, a quantile regression was performed. The significance level (p) was < 0.05. The hemodialysis group had lower selenium levels in their plasma and erythrocytes than the control group (p < 0.001). However, there was no difference in the GPx activity between the groups. Furthermore, an association between the hemodialysis group and selenium levels in plasma (coefficient - 16,343, p < 0.001) and erythrocytes (coefficient - 7839, p = 0.003) was observed by quantile regression, independent of age, sex, and body-mass index. In individuals who had undergone treatment for 60 months or more, GPx activity was lower (p = 0.026) and TBARS levels higher (p = 0.011) than in those who had undergone treatment for less than 60 months. The status of selenium was reduced in the hemodialysis group compared to the control group. The lower GPx activity and higher levels of TBARS in individuals who had undergone treatment for 60 months or more correlated with greater oxidative stress.
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Affiliation(s)
- Christielle Félix Barroso
- Nutrition and Health Post-Graduation Program, State University of Ceará (UECE), Av. Dr. Silas Munguba, 1700, CCS Directory Square, Itaperi Campus, Fortaleza, CE, 60740-000, Brazil
| | - Liliane Viana Pires
- Nutrition Sciences Post-Graduation Program, Department of Nutrition, Federal University of Sergipe, São Cristovão, Sergipe, Brazil
| | - Larissa Bezerra Santos
- Micronutrients and Chronic Diseases Research Group, Stare University of Ceará, Fortaleza, Brazil
| | | | - Priscila Pereira Pessoa
- Nutrition and Health Post-Graduation Program, State University of Ceará (UECE), Av. Dr. Silas Munguba, 1700, CCS Directory Square, Itaperi Campus, Fortaleza, CE, 60740-000, Brazil
| | | | - Camilla Oliveira Duarte de Araújo
- Nutrition and Health Post-Graduation Program, State University of Ceará (UECE), Av. Dr. Silas Munguba, 1700, CCS Directory Square, Itaperi Campus, Fortaleza, CE, 60740-000, Brazil
| | - Cláudia Maria Costa Oliveira
- HUWC Renal Transplant Unit - Federal University of Ceará and Fortaleza General Hospital, Fortaleza, Ceará, Brazil
| | - Carla Soraya Costa Maia
- Nutrition and Health Post-Graduation Program, State University of Ceará (UECE), Av. Dr. Silas Munguba, 1700, CCS Directory Square, Itaperi Campus, Fortaleza, CE, 60740-000, Brazil.
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Radomska D, Czarnomysy R, Radomski D, Bielawska A, Bielawski K. Selenium as a Bioactive Micronutrient in the Human Diet and Its Cancer Chemopreventive Activity. Nutrients 2021; 13:1649. [PMID: 34068374 PMCID: PMC8153312 DOI: 10.3390/nu13051649] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 12/15/2022] Open
Abstract
This review answers the question of why selenium is such an important trace element in the human diet. Daily dietary intake of selenium and its content in various food products is discussed in this paper, as well as the effects of its deficiency and excess in the body. Moreover, the biological activity of selenium, which it performs mainly through selenoproteins, is discussed. These specific proteins are responsible for thyroid hormone management, fertility, the aging process, and immunity, but their key role is to maintain a redox balance in cells. Furthermore, taking into account world news and the current SARS-CoV-2 virus pandemic, the impact of selenium on the course of COVID-19 is also discussed. Another worldwide problem is the number of new cancer cases and cancer-related mortality. Thus, the last part of the article discusses the impact of selenium on cancer risk based on clinical trials (including NPC and SELECT), systematic reviews, and meta-analyses. Additionally, this review discusses the possible mechanisms of selenium action that prevent cancer development.
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Affiliation(s)
- Dominika Radomska
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (D.R.); (D.R.); (K.B.)
| | - Robert Czarnomysy
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (D.R.); (D.R.); (K.B.)
| | - Dominik Radomski
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (D.R.); (D.R.); (K.B.)
| | - Anna Bielawska
- Department of Biotechnology, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland;
| | - Krzysztof Bielawski
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (D.R.); (D.R.); (K.B.)
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Cardozo LFMDF, Mafra D, Tavares da Silva AC, Ermida Barbosa J, Oliveira da Cruz B, Tinoco Mesquita C, Barcza Stockler‐Pinto M. Effects of a Brazil nut‐enriched diet on oxidative stress and inflammation markers in coronary artery disease patients: A small and preliminary randomised clinical trial. NUTR BULL 2021. [DOI: 10.1111/nbu.12495] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Denise Mafra
- Post Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF Niterói Brazil
- Post Graduate Program in Nutrition Sciences Fluminense Federal University (UFF Niterói Brazil
- Post Graduate Program in Medical Sciences Fluminense Federal University (UFF Niterói Brazil
- Clinical Research Unit Antônio Pedro Hospital Fluminense Federal University Niterói Brazil
| | | | - Jaqueline Ermida Barbosa
- Post Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF Niterói Brazil
| | - Beatriz Oliveira da Cruz
- Post Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF Niterói Brazil
| | - Cláudio Tinoco Mesquita
- Post Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF Niterói Brazil
| | - Milena Barcza Stockler‐Pinto
- Post Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF Niterói Brazil
- Post Graduate Program in Nutrition Sciences Fluminense Federal University (UFF Niterói Brazil
- Clinical Research Unit Antônio Pedro Hospital Fluminense Federal University Niterói Brazil
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11
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Hou L, Rashid M, Chhabra M, Chandrasekhar B, Amirthalingam P, Ray S, Li Z. The effect of Bertholletia excelsa on body weight, cholestrol, and c-reactive protein: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med 2020; 57:102636. [PMID: 33271300 DOI: 10.1016/j.ctim.2020.102636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND & OBJECTIVE(S) Bertholletia excelsa is a rich herbal source of anti-oxidants and phenols. The goal of this study is to evaluation the effect of bertholletia excelsa nut on body weight, C-reactive protein (CRP) and lipid profile. METHODS A literature search was conducted in PubMed, Scopus and Web of sciences databases by two reviewers up to October 2019. Random effect model used to combine results. RESULTS Six studies included in analysis with 71 participants. The population was public population. Pooled results showed Bertholletia excelsa have reduction effect on triglyceride weighted mean difference (WMD: -8.23 mg/dl, 95 % CI -15.09, -1.38, I² = 0%), Cholesterol (WMD: -14.31 mg/dl, 95 % CI -23.38, -5.24, I² = 47 %), Low-density lipoprotein (LDL) (WMD: -9.27 mg/dl, 95 % CI -13.48, -5.06, I² = 0%). CONCLUSION This study provided an evidence that Bertholletia excelsa nuts have reduction effect on triglyceride, cholesterol, and LDL levels.
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Affiliation(s)
- Lili Hou
- Department of Clinical Nutrition, Taizhou People's Hospital, Taizhou, Jiangsu, 225300, China
| | - Muhammed Rashid
- Department of Pharmacy Practice, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, BG Nagar, 571448, Karnataka, India
| | - Manik Chhabra
- Department of Pharmacy Practice, Indo-Soviet Friendship College of Pharmacy, Moga, 142001, Punjab, India
| | - Boya Chandrasekhar
- Creative Educational Society's College of Pharmacy, Andra Pradesh, India
| | | | - Sujoy Ray
- Department of Psychiatry, St. John's Medical College and Hospital, Bangalore, India
| | - Zhenzuo Li
- Department of Endocrinology, The Fourth people's Hospital of Jinan City, No.50 Normal Road, Tianqiao District, Jinan, Shandong Province, 250031, China.
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12
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Schincaglia RM, Cuppari L, Neri HFS, Cintra DE, Sant'Ana MR, Mota JF. Effects of baru almond oil (Dipteryx alata Vog.) supplementation on body composition, inflammation, oxidative stress, lipid profile, and plasma fatty acids of hemodialysis patients: A randomized, double-blind, placebo-controlled clinical trial. Complement Ther Med 2020; 52:102479. [PMID: 32951729 DOI: 10.1016/j.ctim.2020.102479] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/06/2020] [Accepted: 06/08/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The consumption of nuts and edible seeds is associated with the improvement of the metabolic profile and reduction of cardiovascular diseases. However, the effects of its subproducts, such as oil, are still poorly studied. This study aimed to evaluate the effect of the baru almond oil supplementation on inflammation, oxidative stress, body composition, lipid profile, and plasma fatty acids of hemodialysis patients. METHODS In a randomized, double-blind, 12-week placebo-controlled clinical study, hemodialysis patients were supplemented with 5 g of baru oil (BG, n = 17) or 5 g of mineral oil (placebo, BP, n = 12). Body composition, renal function, ultra-sensitive C-reactive protein (us-CRP), oxidative stress, plasma fatty acids, and lipid profile were analysed before and after the intervention. RESULTS Patients were aged 50.5 ± 2.2 years and the average time of dialyses was 52,1 ± 42,6 months. The BG decreased us-CRP concentration compared to PG (-1.2 ± 0.2 vs. + 0.8 ± 0.2 mg / L,d = 0.88; p = 0.01). Baru almond oil supplementation was not effective in improving body composition, lipid profile, and oxidative stress. CONCLUSION Baru almond oil supplementation decreased us-CRP concentration in patients with chronic kidney disease under hemodialysis treatment.
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Affiliation(s)
- Raquel M Schincaglia
- Laboratório de investigação em nutrição clínica e exercício (Labince), Faculdade de Nutrição, Universidade Federal de Goiás (UFG), Goiânia, GO, 74605-080, Brazil
| | - Lilian Cuppari
- Departamento de Nefrologia, Universidade Federal de São Paulo e Fundação Oswaldo Ramos, São Paulo, SP, 04021-001, Brazil
| | - Hiasmin F S Neri
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biológica, Departamento de Farmacologia, Universidade Federal de Goiás (UFG), Goiânia, GO, 74690-090, Brazil
| | - Dennys E Cintra
- Laboratório de Genômica Nutricional (LabGeN), Faculdade de Ciências Aplicadas, Universidade Estadual de Campinas (UNICAMP), Limeira, SP, 13484-350, Brazil
| | - Marcella R Sant'Ana
- Laboratório de Genômica Nutricional (LabGeN), Faculdade de Ciências Aplicadas, Universidade Estadual de Campinas (UNICAMP), Limeira, SP, 13484-350, Brazil
| | - João F Mota
- Laboratório de investigação em nutrição clínica e exercício (Labince), Faculdade de Nutrição, Universidade Federal de Goiás (UFG), Goiânia, GO, 74605-080, Brazil.
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13
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Bacci MR, Cabral LS, L. da Veiga G, da C.A. Alves B, Murad N, Fonseca FL. The Impact of Inflammatory Profile on Selenium Levels in Hemodialysis Patients. Antiinflamm Antiallergy Agents Med Chem 2020; 19:42-49. [PMID: 30666918 PMCID: PMC7460750 DOI: 10.2174/1871523018666190121165902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/06/2019] [Accepted: 01/14/2019] [Indexed: 11/22/2022]
Abstract
Introduction: Hemodialysis stands out as an eligible treatment for patients with chronic kidney disease. The subsequent inflammatory process resulting from this disease and hemodialysis per se is exacerbated in this therapy. Selenium (Se) is an essential trace element that can participate in the inhibition of pro-oxidant and pro-inflammatory processes and could be considered a measurement that indicates the progression of chronic kidney disease and inflammation. Objectives: The present study investigated selenemia in hemodialysis patients of the ABC region of São Paulo and aimed to establish the correlation between an inflammatory marker and selenemia in this conditions disease. Methods: This is an observational cross-sectional study of the Faculdade de Medicina do ABC in patients submitted to hemodialysis three times a week for at least six months. The eligible group composed of 21 patients, who filled out forms and underwent biochemical tests (colorimetric enzyme methods, flow cytometer, turbidimetric method and mass spectrometry). Results: The study population showed, women (70%), men (30%) with a mean age of 47 ± 17 years, Caucasians (36%) and non-Caucasian (64%), hypertensive (68%), smokers (53%) and non-smokers (64%). There was a hegemonic prevalence of systolic arterial hypertension (SAH) 68.1% in relation to diabetes mellitus (DM) (50%). Pre and post hemodialysis (HD) selenemia showed statistical significance, which did not occur with C-reactive protein. There was a predominance of females in our sample; the pre- and post-HD selenemia were within the normal range of the reference values; there was a statistically significant correlation between pre and post-HD selenemia; there was no correlation with statistical significance between values of pre and post-HD C-reactive protein. Conclusion: Our data showed that there was no direct relationship between pre- and post-HD inflammation and pre- and post-HD selenemia.
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Affiliation(s)
- Marcelo R. Bacci
- Clinical Analysis Department, Faculdade de Medicina ABC, FMABC Santo Andre, Brazil
| | - Lívia S.S. Cabral
- Clinical Analysis Department, Faculdade de Medicina ABC, FMABC Santo Andre, Brazil
| | - Glaucia L. da Veiga
- Clinical Analysis Department, Faculdade de Medicina ABC, FMABC Santo Andre, Brazil
| | | | - Neif Murad
- Clinical Analysis Department, Faculdade de Medicina ABC, FMABC Santo Andre, Brazil
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14
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de Souza RGM, Gomes AC, Navarro AM, Cunha LCD, Silva MAC, Junior FB, Mota JF. Baru Almonds Increase the Activity of Glutathione Peroxidase in Overweight and Obese Women: A Randomized, Placebo-Controlled Trial. Nutrients 2019; 11:E1750. [PMID: 31366053 PMCID: PMC6723341 DOI: 10.3390/nu11081750] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/20/2019] [Accepted: 07/26/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Obesity-induced inflammation is frequently associated with higher oxidative stress. In vitro and experimental studies have considered baru almonds (Dipteryx alata Vog) as a legume seed with high antioxidant capacity. The aim of this study was to evaluate whether baru almonds are capable of improving the inflammatory and antioxidant status in overweight and obese women. METHODS In a parallel-arm, randomized placebo-controlled trial, 46 overweight and obese women (age: 40 ± 11 years; body mass index: 33.3 ± 4.3) were randomly assigned to receive advice to follow a normocaloric and isoenergetic diet with placebo (PLA, n = 22) or similar advice plus 20 g baru almonds (BARU, n = 24) for 8 wk. Malondialdehyde (MDA), adiponectin, tumor necrosis factor-α, interleukin-6, interleukin-10, antioxidant enzymes activities (catalase-CAT; glutathione peroxidase-GPx; superoxide dismutase-SOD), and minerals were analyzed in plasma samples. RESULTS At baseline, groups were similar regarding the body composition, oxidative, and inflammatory parameters. The BARU group increased the activity of GPx (+0.08 U/mg, 95%CI + 0.05 to +0.12 vs. -0.07, 95%CI -0.12 to -0.03, p < 0.01) and plasma copper concentration (p = 0.037) when compared to the PLA group. No differences were observed between groups in CAT and SOD activity or MDA and cytokines concentrations. CONCLUSIONS Baru almond supplementation increased the GPx activity in overweight and obese women.
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Affiliation(s)
- Rávila Graziany Machado de Souza
- Clinical and Sports Nutrition Research Laboratory (LABINCE), Faculty of Nutrition, Federal University of Goias-UFG, Goiânia, 74605-080 GO, Brazil
| | - Aline Corado Gomes
- Clinical and Sports Nutrition Research Laboratory (LABINCE), Faculty of Nutrition, Federal University of Goias-UFG, Goiânia, 74605-080 GO, Brazil
| | - Anderson Marliere Navarro
- Department of Health Sciences; Faculty of Medicine, University of São Paulo-USP, Ribeirão Preto, 14049-900 SP, Brazil
| | - Luiz Carlos da Cunha
- Nucleus of Toxic-pharmacological Studies and Research (NEPET), Federal University of Goiás-UFG, Goiânia, 74605-220 GO, Brazil
| | - Marina Alves Coelho Silva
- Nucleus of Toxic-pharmacological Studies and Research (NEPET), Federal University of Goiás-UFG, Goiânia, 74605-220 GO, Brazil
| | - Fernando Barbosa Junior
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo-FCRP/USP, Ribeirão Preto, 14040-903 SP, Brazil
| | - João Felipe Mota
- Clinical and Sports Nutrition Research Laboratory (LABINCE), Faculty of Nutrition, Federal University of Goias-UFG, Goiânia, 74605-080 GO, Brazil.
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15
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Duarte GBS, Reis BZ, Rogero MM, Vargas-Mendez E, Júnior FB, Cercato C, Cozzolino SMF. Consumption of Brazil nuts with high selenium levels increased inflammation biomarkers in obese women: A randomized controlled trial. Nutrition 2019; 63-64:162-168. [PMID: 31026738 DOI: 10.1016/j.nut.2019.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/18/2019] [Accepted: 02/14/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Increased inflammatory response is an important factor in the pathophysiology of obesity. The mineral selenium (Se), of which one of the main food sources is the Brazil nut, has important antioxidant and anti-inflammatory functions through the action of selenoproteins. Thus, the evaluation of the influence of this micronutrient in this context is of great relevance. The aim of this study was to evaluate the effects of Brazil nut intake with high Se concentrations on inflammatory biomarkers and its relation to Se status in obese women. METHODS A randomized controlled clinical trial was carried out with 55 women recruited at Clinical Hospital in São Paulo, Brazil. Patients were randomly assigned to either the Brazil nut group (BN) or the control group (CO) and followed up for 2 mo. The BN group consumed 1 unit/d of Brazil nuts (∼ 1261 μg/Se); the CO group did not receive any intervention. At baseline and after 2 mo, analysis of biochemical parameters related to Se status, oxidative stress, and inflammatory biomarkers were performed. RESULTS At baseline, both groups did not present Se deficiency. In the BN group, a significant increase (P < 0.05) in all Se biomarkers and in gene expression of several proinflammatory parameters (interleukin-6, tumor necrosis factor-α, and Toll-like receptors 2 and 4) were observed after the intervention period. No changes were observed for the CO group. CONCLUSION Although there were no changes in plasma inflammatory biomarkers levels, a significant increase in gene expression may be an indication of a proinflammatory stimulus in obesity, induced by the consumption of Brazil nuts with high Se levels.
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Affiliation(s)
- Graziela Biude Silva Duarte
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Science, University of São Paulo, São Paulo, Brazil.
| | - Bruna Zavarize Reis
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Science, University of São Paulo, São Paulo, Brazil
| | - Marcelo Macedo Rogero
- Department of Nutrition, School of Public Health, University of São Paulo, São Paulo, Brazil; Food Research Center (FoRC), CEPID-FAPESP, Research Innovation and Dissemination Centers São Paulo Research Foundation, São Paulo, Brazil
| | - Ernesto Vargas-Mendez
- Department of Biochemistry, School of Medicine, University of Costa Rica, Costa Rica
| | - Fernando Barbosa Júnior
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Cintia Cercato
- Division of Endocrinology and Metabolism, Clinical Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil
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16
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Cardoso BR, Duarte GBS, Reis BZ, Cozzolino SMF. Brazil nuts: Nutritional composition, health benefits and safety aspects. Food Res Int 2017; 100:9-18. [PMID: 28888463 DOI: 10.1016/j.foodres.2017.08.036] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 08/11/2017] [Accepted: 08/13/2017] [Indexed: 12/15/2022]
Abstract
Brazil nuts are among the richest selenium food sources, and studies have considered this Amazonian nut as an alternative for selenium supplementation. Besides selenium, Brazil nuts present relevant content of other micronutrients such as magnesium, copper, and zinc. The nutritional composition of nuts, also characterized by adequate fatty acid profile and high content of protein and bioactive compounds, has many health benefits. In the present review, we examine the nutritional composition of Brazil nuts, comparing it with other nuts, and describe the relevance of possible contaminants and metal toxicants observed in this nut for human health. Furthermore, we report different trials available in the literature, which demonstrate positive outcomes such as modulation of the lipid serum profile, enhancement of the antioxidant system and improvement of anti-inflammatory response. These effects have been assessed under different conditions, such as cognitive impairment, dyslipidemia, cancer, and renal failure.
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Affiliation(s)
- Bárbara R Cardoso
- Nutrition and Minerals Laboratory, Dept. of Food and Experimental Nutrition, University of São Paulo, São Paulo, Brazil; The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia.
| | - Graziela B Silva Duarte
- Nutrition and Minerals Laboratory, Dept. of Food and Experimental Nutrition, University of São Paulo, São Paulo, Brazil
| | - Bruna Z Reis
- Nutrition and Minerals Laboratory, Dept. of Food and Experimental Nutrition, University of São Paulo, São Paulo, Brazil
| | - Silvia M F Cozzolino
- Nutrition and Minerals Laboratory, Dept. of Food and Experimental Nutrition, University of São Paulo, São Paulo, Brazil
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17
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Han J, Liang H, Yi J, Tan W, He S, Wu X, Shi X, Ma J, Guo X. Selenium deficiency induced damages and altered expressions of metalloproteinases and their inhibitors (MMP1/3, TIMP1/3) in the kidneys of growing rats. J Trace Elem Med Biol 2016; 34:1-9. [PMID: 26854238 DOI: 10.1016/j.jtemb.2015.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/01/2015] [Accepted: 11/14/2015] [Indexed: 11/26/2022]
Abstract
Selenium is an essential trace element for the maintenance of structures and functions of kidney. To evaluate the effects of low selenium on the kidneys of growing rats, newborn rats were fed with selenium deficient and normal diets respectively for 109 days. As a result, rats fed with low selenium diets resulted in a decline in the body weight and the concentration of selenium in the kidney, especially the male rats from the low selenium groups. Moreover, the ultrastructure of glomerulus and tubules were damaged in low selenium group: the glomeruli were observed with hyperplasia of mesangial cells, fusion of podocyte foot processes and thickening of basement membrane; and the tubules were observed with vacuolar degenerated epithelial cells, increased edema fluid or protein solution between cells, microvilli edema, increased cell gaps and decreased cell links. Furthermore, the pathological changes in selenium deficient group included the increase of fibers around renal hilum aorta and in the renal collecting duct, and shed of cells in the proximal convoluted tubules. In addition, up-regulated expressions of matrix metalloproteinases (MMP1/3) and down-regulated expressions of their inhibitors (TIMP1/3) at the mRNA and protein levels were also appeared to be relevant to low selenium. The results suggested that low selenium in diet may cause low selenium concentration in the kidney of growing rat and lead to damages of the ultrastructure and extracellular matrix (ECM) of kidney.
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Affiliation(s)
- Jing Han
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Hua Liang
- Department of Pathology, The first Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Jianhua Yi
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Wuhong Tan
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Shulan He
- Department of Epidemiology and Biostatistics, School of Public Health, Ningxia Medical University, Yinchuan 750004, PR China.
| | - Xiaofang Wu
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Xiaowei Shi
- Department of Preventive Health Care, The first Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Jing Ma
- Institute for Endemic Disease Prevention and Control, Xining, Qinghai 811602, PR China.
| | - Xiong Guo
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
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18
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Mafra D. Can Outcomes be Improved in Dialysis Patients by Optimizing Trace Mineral, Micronutrient, and Antioxidant Status?: The Role of Trace Elements. Semin Dial 2015; 29:48-50. [PMID: 26384706 DOI: 10.1111/sdi.12444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Denise Mafra
- Postgraduate Program of Cardiovascular Sciences and Postgraduate Program of Medical Sciences, Federal Fluminense University (UFF), Niterói/Rio de Janeiro, Brazil
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19
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Souza RGM, Gomes AC, Naves MMV, Mota JF. Nuts and legume seeds for cardiovascular risk reduction: scientific evidence and mechanisms of action. Nutr Rev 2015; 73:335-47. [DOI: 10.1093/nutrit/nuu008] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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20
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Stockler-Pinto MB, Malm O, Moraes C, Farage NE, Silva WS, Cozzolino SMF, Mafra D. A follow-up study of the chronic kidney disease patients treated with Brazil nut: focus on inflammation and oxidative stress. Biol Trace Elem Res 2015; 163:67-72. [PMID: 25395121 DOI: 10.1007/s12011-014-0167-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/28/2014] [Indexed: 10/24/2022]
Abstract
Brazil nut is the richest known food source of selenium. The supplementation with Brazil nut during 3 months was effective in reducing oxidative stress and inflammation in hemodialysis (HD) patients. However, there are no available data on the antioxidant effect after that supplementation. The objective of this work was to determine if the beneficial effects of one Brazil nut supplementation per day during 3 months for the HD patients could be sustained after 12 months. Twenty-nine HD patients (58.6 % men, 51.0 ± 3.3 years) from RenalCor Clinic, Rio de Janeiro, Brazil, were followed up 12 months after the supplementation study had finished. The plasma levels of antioxidant substances as selenium, glutathione peroxidase (GPx), 8-isoprostane, 8-hydroxy-2-deoxyguanosine (8-OHdG) and cytokines (tumour necrosis factor alpha (TNF-α) and interleukin-6 (IL-6)) were determined before, after 3 months of supplementation and after 12 months. After 3-months supplementation, cytokines, 8-OHdG and 8-isoprostane plasma levels have decreased and the activity of GPx and selenium plasma levels have increased significantly. Additionally, after 12 months, the values of 8-isoprostane, 8-OHdG and cytokines increased and the activity of GPx and selenium plasma levels decreased significantly. The levels of oxidative stress and inflammation biomarkers after 12 months increased compared to the basal levels. Consequently, it is necessary to motivate patients to adopt different dietary intake patterns.
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Affiliation(s)
- M B Stockler-Pinto
- Carlos Chagas Filho Biophysics Institute, Health Sciences Centre, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil,
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21
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Stockler-Pinto MB, Mafra D, Moraes C, Lobo J, Boaventura GT, Farage NE, Silva WS, Cozzolino SF, Malm O. Brazil nut (Bertholletia excelsa, H.B.K.) improves oxidative stress and inflammation biomarkers in hemodialysis patients. Biol Trace Elem Res 2014; 158:105-12. [PMID: 24504745 DOI: 10.1007/s12011-014-9904-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 01/24/2014] [Indexed: 12/19/2022]
Abstract
Cumulative evidence indicates that oxidative stress and inflammation frequently occurs in patients undergoing maintenance hemodialysis (HD) and as a result of overproduction of reactive oxygen species (ROS) and a decrease of antioxidant defenses such as selenium (Se). Previous studies in our laboratory showed that the supplementation of 1 unit of Brazil nut (the richest known food source of Se) a day during 3 months is effective to improve Se status and increase glutathione peroxidase (GPx) levels in HD patients. The aim of this study was to evaluate the effect of Brazil nut supplementation on oxidative stress and inflammation markers in HD patients. Forty HD patients from Rio de Janeiro, Brazil were studied. All patients received one nut per day for 3 months. The Se plasma levels and GPx, 8-isoprostane, 8-hydroxy-2-deoxyguanosine (8-OHdG), and cytokine (TNF-α and IL-6) levels and lipid profile were determined before and after 3 months of supplementation. The plasma Se and GPx activity increased, while cytokines, 8-OHdG, and 8-isoprostane plasma levels decreased significantly after 3 months supplementation. HDL-c levels increased and LDL-c levels decreased significantly. These data suggest that the consumption of only one Brazil nut per day during 3 months was effective to reduce the inflammation, oxidative stress markers, and the atherogenic risk, thereby increasing the antioxidant defenses in HD patients. Our results indicate that Brazil nut as Se source plays an important role as an anti-inflammatory and antioxidant agent in HD patients.
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Affiliation(s)
- Milena Barcza Stockler-Pinto
- Carlos Chagas Filho Biophysics Institute, Health Sciences Centre, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil,
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22
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A single consumption of high amounts of the Brazil nuts improves lipid profile of healthy volunteers. J Nutr Metab 2013; 2013:653185. [PMID: 23840948 PMCID: PMC3693158 DOI: 10.1155/2013/653185] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 05/15/2013] [Accepted: 05/15/2013] [Indexed: 11/17/2022] Open
Abstract
Background. This study investigates the effects of Brazil nut ingestion on serum lipid profile in healthy volunteers. Methods. Ten healthy subjects were enrolled in the study. Each subject was tested 4 times in a randomized crossover in relation to the ingestion of different serving sizes of the Brazil nut: 0, 5, 20, or 50 g. At each treatment point, peripheral blood was drawn before and at 1, 3, 6, 9, 24, and 48 hours and 5 and 30 days. Blood samples were tested for total cholesterol, high- and low-density lipoprotein cholesterol (HDL-c and LDL-c, resp.), triglycerides, selenium, aspartate and alanine aminotransferases, albumin, total protein, alkaline phosphatase, gamma GT, urea, creatinine, and C-reactive protein. Results. A significant increase of the plasma selenium levels was observed at 6 hours within the groups receiving the nuts. Serum LDL-c was significantly lower, whereas HDL-c was significantly higher 9 hours after the ingestion of 20 or 50 g of nuts. The biochemical parameters of liver and kidney function were not modified by ingestion of nuts. Conclusions. This study shows that the ingestion of a single serving of Brazil nut can acutely improve the serum lipid profile of healthy volunteers.
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23
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Sherman RA. Briefly Noted. Semin Dial 2012. [DOI: 10.1111/j.1525-139x.2012.12019.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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