1
|
Sebastião F, Vaz DC, Pires CL, Cruz PF, Moreno MJ, Brito RMM, Cotrim L, Oliveira N, Costa A, Fonseca A, Rodrigues M, Ispolnov K, Bernardino R, Vieira J. Nutrient-efficient catfish-based aquaponics for producing lamb's lettuce at two light intensities. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6541-6552. [PMID: 38520251 DOI: 10.1002/jsfa.13478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 03/13/2024] [Accepted: 03/23/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Aquaponic systems are sustainable processes of managing water and nutrients for food production. An innovate nutrient-efficient catfish-based (Clarias gariepinus) aquaponics system was implemented for producing two cultivars of two leafy vegetables largely consumed worldwide: lamb's lettuce (Valerianella locusta var. Favor and Valerianella locusta var. de Hollande) and arugula (Eruca vesicaria var. sativa and Eruca sativa). Different growing treatments (4 × 2 factorial design) were applied to plants of each cultivar, grown at two light intensities (120 and 400 μmol m-2 s-1). During growth, several morphological characteristics (root length, plant height, leaf number, foliage diameter and biggest leaf length) were measured. At harvest, plants were weighed and examined qualitatively in terms of greenness and health status. Additionally, leaf extracts were obtained and used to determine total phenolic contents, antioxidant capacities, and levels of cytotoxicity to Caco-2 intestinal model cells. RESULTS After a 5-week growth period, both lamb's lettuce cultivars presented high levels of greenness and health status, at both light intensities, particularly the var. de Hollande that also showed higher average performance in terms of plant morphology. In turn, arugula cultivars showed lower levels of greenness and health status, especially the cultivar E. vesicaria var. sativa submitted to direct sunlight during growth. In addition, plant specimens submitted to higher levels of light intensity showed higher contents in antioxidants/polyphenols. Cultivars with a higher content in antioxidants/polyphenols led to higher Caco-2 cell viability. CONCLUSION For successful industrial implementation of the aquaponics technology, different and optimized acclimatizing conditions must be applied to different plant species and cultivars. © 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Fernando Sebastião
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Daniela C Vaz
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- Coimbra Chemistry Center, Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, Coimbra, Portugal
- School of Health Sciences, Polytechnic of Leiria, Leiria, Portugal
| | - Cristiana L Pires
- Coimbra Chemistry Center, Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Pedro F Cruz
- Coimbra Chemistry Center, Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Maria João Moreno
- Coimbra Chemistry Center, Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Rui M M Brito
- Coimbra Chemistry Center, Institute of Molecular Sciences, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Luis Cotrim
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Nelson Oliveira
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Ana Costa
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
| | - André Fonseca
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Maria Rodrigues
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Kirill Ispolnov
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| | - Raul Bernardino
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Tourism and Marine Technology, Polytechnic of Leiria, Peniche, Portugal
| | - Judite Vieira
- LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials, Polytechnic of Leiria, Leiria, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
- School of Technology and Management, Polytechnic of Leiria, Leiria, Portugal
| |
Collapse
|
2
|
du Toit L, Sundqvist ML, Redondo-Rio A, Brookes Z, Casas-Agustench P, Hickson M, Benavente A, Montagut G, Weitzberg E, Gabaldón T, Lundberg JO, Bescos R. The effect of dietary nitrate on the oral microbiome and salivary biomarkers in individuals with high blood pressure. J Nutr 2024:S0022-3166(24)00382-1. [PMID: 39019159 DOI: 10.1016/j.tjnut.2024.07.002] [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: 04/03/2024] [Revised: 06/03/2024] [Accepted: 07/02/2024] [Indexed: 07/19/2024] Open
Abstract
BACKGROUND Green leafy vegetables (GLV) contain inorganic nitrate, an anion with potential prebiotic effects on the oral microbiome. However, it remains unclear whether GLV and pharmacological supplementation (potassium nitrate: PN) with a nitrate salt induce similar effects on the oral microbiome. OBJECTIVES This study aimed to compare the effect of GLV with PN supplementation on the oral microbiome composition and salivary biomarkers in individuals with high blood pressure (BP). METHODS Seventy individuals were randomly allocated to three different groups to follow a 5-week dietary intervention. Group 1 consumed 300 mg/day of nitrate in form of GLV. Group 2 consumed pills with 300 mg/day of PN and low-nitrate vegetables. Group 3 consumed pills with potassium chloride (placebo: PLAC) and low-nitrate vegetables. The oral microbiome composition and salivary biomarkers of oral health were analyzed before and after the dietary intervention. RESULTS The GLV and PN groups showed similar microbial changes, probably nitrate-dependent, including an increase in the abundance of Neisseria, Capnocytophaga, Campylobacter species, and a decrease in Veillonella, Megasphaera, Actinomyces and Eubacterium species after the treatment. Increased abundance of Rothia species, and reduced abundance of Streptococcus, Prevotella, Actinomyces and Mogibacterium species were observed in the GLV group, which could be nitrate-independent. GLV and PN treatments increased salivary pH, but only GLV treatment showed an increase in the salivary buffering capacity and a reduction of lactate. CONCLUSION The combination of nitrate-dependent and nitrate-independent microbial changes in the GLV group have a stronger effect to potentially improve oral health biomarkers compared to PN.
Collapse
Affiliation(s)
- Lisa du Toit
- School of Health Professions, Faculty of Health, University of Plymouth Plymouth, UK
| | - Michaela L Sundqvist
- Swedish School of Sport and Health Sciences, Department of Physiology, Nutrition and Biomechanics Stockholm, Sweden
| | - Alvaro Redondo-Rio
- Institute for Research in Biomedicine (IRB Barcelona) Barcelona, Spain; Barcelona Supercomputing Centre (BSC-CNS). Barcelona, Spain
| | - Zoe Brookes
- Peninsula Dental School, Faculty of Health, University of Plymouth Plymouth, UK
| | | | - Mary Hickson
- School of Health Professions, Faculty of Health, University of Plymouth Plymouth, UK
| | - Alicia Benavente
- Institute for Research in Biomedicine (IRB Barcelona) Barcelona, Spain; Barcelona Supercomputing Centre (BSC-CNS). Barcelona, Spain
| | - Gemma Montagut
- Institute for Research in Biomedicine (IRB Barcelona) Barcelona, Spain; Barcelona Supercomputing Centre (BSC-CNS). Barcelona, Spain
| | - Eddie Weitzberg
- Pharmacology and Physiology Department, Karolinska Institute Stockholm, Sweden
| | - Toni Gabaldón
- Institute for Research in Biomedicine (IRB Barcelona) Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICREA) Barcelona, Spain; CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III Barcelona, Spain; Barcelona Supercomputing Centre (BSC-CNS). Barcelona, Spain
| | - Jon O Lundberg
- Pharmacology and Physiology Department, Karolinska Institute Stockholm, Sweden
| | - Raul Bescos
- School of Health Professions, Faculty of Health, University of Plymouth Plymouth, UK.
| |
Collapse
|
3
|
Nieman DC, Sakaguchi CA, Williams JC, Mulani FA, Shivprasad Suresh P, Omar AM, Zhang Q. Beet supplementation mitigates post-exercise inflammation. Front Nutr 2024; 11:1408804. [PMID: 38873567 PMCID: PMC11169660 DOI: 10.3389/fnut.2024.1408804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 05/16/2024] [Indexed: 06/15/2024] Open
Abstract
Objectives This study investigated the efficacy of a mixed beet-based supplement (BEET) versus placebo (PL) in countering inflammation during recovery from 2.25 h of intensive cycling in 20 male and female cyclists. A multi-omics approach was used that included untargeted proteomics and a targeted oxylipin panel. Methods A randomized, placebo-controlled, double-blind, crossover design was used with two 2-week supplementation periods and a 2-week washout period. Supplementation periods were followed by a 2.25 h cycling bout at close to 70%VO2max. The BEET supplement provided 212 mg of nitrates per day, 200 mg caffeine from green tea extract, 44 mg vitamin C from Camu Camu berry, B-vitamins from quinoa sprouts (40% Daily Value for thiamin, riboflavin, niacin, and vitamin B6), and 2.5 g of a mushroom blend containing Cordyceps sinensis and Inonotus obliquus. Six blood samples were collected before and after supplementation (overnight fasted state), immediately post-exercise, and at 1.5 h-, 3 h-, and 24 h-post-exercise. Results The 2.25 h cycling bout increased plasma levels of 41 of 67 oxylipins detected. BEET supplementation significantly increased plasma nitrate (NO3 -) and nitrite (NO2 -) (sum, NO3 - + NO2 -) concentrations (interaction effect, p < 0.001) and two anti-inflammatory oxylipins [18-hydroxyeicosapentaenoic acid (18-HEPE) and 4-hydroxy-docosahexanoic acid (4-HDoHE)]. The untargeted proteomics analysis identified 616 proteins (458 across all times points), and 2-way ANOVA revealed a cluster of 45 proteins that were decreased and a cluster of 21 that were increased in the BEET versus PL trials. Functional enrichment supported significant BEET-related reductions in inflammation-related proteins including several proteins related to complement activation, the acute phase response, and immune cell adhesion, migration, and differentiation. Discussion Intake of a BEET-based supplement during a 2-week period was linked to higher plasma levels of NO3 - + NO2 -, elevated post-exercise levels of two anti-inflammatory oxylipins, and a significant decrease in a cluster of proteins involved in complement activation and inflammation. These data support that 2-weeks intake of nitrate from a mixed beet-based supplement moderated protein biomarkers of exercise-induced inflammation in athletes.
Collapse
Affiliation(s)
- David C. Nieman
- Human Performance Laboratory, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, United States
| | - Camila A. Sakaguchi
- Human Performance Laboratory, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, United States
| | - James C. Williams
- Human Performance Laboratory, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, United States
| | - Fayaj A. Mulani
- UNCG Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, United States
| | - Patil Shivprasad Suresh
- UNCG Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, United States
| | - Ashraf M. Omar
- UNCG Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, United States
| | - Qibin Zhang
- UNCG Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, United States
| |
Collapse
|
4
|
Goh CE, Bohn B, Genkinger JM, Molinsky R, Roy S, Paster BJ, Chen CY, Yuzefpolskaya M, Colombo PC, Rosenbaum M, Knight R, Desvarieux M, Papapanou PN, Jacobs DR, Demmer RT. Dietary nitrate intake and net nitrite-generating capacity of the oral microbiome interact to enhance cardiometabolic health: Results from the Oral Infections Glucose Intolerance and Insulin Resistance Study (ORIGINS). MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.04.10.24305636. [PMID: 38645157 PMCID: PMC11030477 DOI: 10.1101/2024.04.10.24305636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Background We investigated the association between dietary nitrate intake and early clinical cardiometabolic risk biomarkers, and explored whether the oral microbiome modifies the association between dietary nitrate intake and cardiometabolic biomarkers. Methods Cross-sectional data from 668 (mean [SD] age 31 [9] years, 73% women) participants was analyzed. Dietary nitrate intakes and alternative healthy eating index (AHEI) scores were calculated from food frequency questionnaire responses and a validated US food database. Subgingival 16S rRNA microbial genes (Illumina, MiSeq) were sequenced, and PICRUSt2 estimated metagenomic content. The Microbiome Induced Nitric oxide Enrichment Score (MINES) was calculated as a microbial gene abundance ratio representing enhanced net capacity for NO generation. Cardiometabolic risk biomarkers included systolic and diastolic blood pressure, HbA1c, glucose, insulin, and insulin resistance (HOMA-IR), and were regressed on nitrate intake tertiles in adjusted multivariable linear models. Results Mean nitrate intake was 190[171] mg/day. Higher nitrate intake was associated with lower insulin, and HOMA-IR but particularly among participants with low abundance of oral nitrite enriching bacteria. For example, among participants with a low MINES, mean insulin[95%CI] levels in high vs. low dietary nitrate consumers were 5.8[5.3,6.5] vs. 6.8[6.2,7.5] (p=0.004) while respective insulin levels were 6.0[5.4,6.6] vs. 5.9[5.3,6.5] (p=0.76) among partcipants with high MINES (interaction p=0.02). Conclusion Higher dietary nitrate intake was only associated with lower insulin and insulin resistance among individuals with reduced capacity for oral microbe-induced nitrite enrichment. These findings have implications for future precision medicine-oriented approaches that might consider assessing the oral microbiome prior to enrollment into dietary interventions or making dietary recommendations.
Collapse
Affiliation(s)
- Charlene E Goh
- Faculty of Dentistry, National University of Singapore, Singapore
| | - Bruno Bohn
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Jeanine M Genkinger
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, USA
| | - Rebecca Molinsky
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Sumith Roy
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Bruce J Paster
- The Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Ching-Yuan Chen
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, New York, NY, USA
| | - Melana Yuzefpolskaya
- Division of Cardiology, Department of Medicine, New York Presbyterian Hospital, Columbia University, New York, NY, USA
| | - Paolo C Colombo
- Division of Cardiology, Department of Medicine, New York Presbyterian Hospital, Columbia University, New York, NY, USA
| | - Michael Rosenbaum
- Division of Molecular Genetics, Departments of Pediatrics and Medicine, Columbia University, New York, NY, USA
| | - Rob Knight
- Department of Computer Science & Engineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, USA
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
| | - Moïse Desvarieux
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
- INSERM UMR 1153, Centre de Recherche Epidemiologie et Statistique Paris Sorbonne Cité (CRESS), METHODS Core, Paris, France
| | - Panos N Papapanou
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, New York, NY, USA
| | - David R Jacobs
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Ryan T Demmer
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
- Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, College of Medicine and Science
| |
Collapse
|
5
|
Jeddi S, Yousefzadeh N, Zarkesh M, Kashfi K, Ghasemi A. Effect of long-term inorganic nitrate administration on myocardial ischemia-reperfusion injury in ovariectomized rats. Front Pharmacol 2024; 15:1369379. [PMID: 38601460 PMCID: PMC11004245 DOI: 10.3389/fphar.2024.1369379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/15/2024] [Indexed: 04/12/2024] Open
Abstract
Introduction: Menopause is associated with reduced nitric oxide (NO) bioavailability and lower tolerance against myocardial ischemia-reperfusion (IR) injury. This study investigated whether long-term nitrate administration provides resistance against myocardial IR injury in ovariectomized (OVX) rats. Method: After ovariectomy, female rats were assigned to the OVX and the OVX + nitrate groups (n = 14/group); the latter group consumed nitrate (100 mg/L) for 9 months. At month 9, each group was divided into two subgroups (n = 7/subgroup), of which one subgroup was exposed to myocardial IR (IR+ hearts) and the other was not exposed (IR- hearts). The hearts of rats were isolated, and NO metabolite (NOx), oxidative stress indices, and mRNA expressions of endothelial (eNOS), inducible (iNOS), and neuronal (nNOS) NO synthases, as well as markers of apoptosis, were measured in the IR- and IR+ hearts. In the IR+ hearts, cardiac function indices (CFI) and the infarct size were also measured. Results: Nitrate increased catalase activity (97%) and eNOS expression (2.94-fold) in the IR- hearts. In the IR+ hearts, nitrate reduced left ventricular (LV) end-diastolic pressure (11.6%) and infarct size (26.2%) and increased recovery of LV developed pressure (44.0%) and peak rate of positive (28.9%) and negative (15.4%) changes in LV pressure. In addition, in the IR+ hearts, nitrate increased eNOS and B-cell lymphoma-2 (Bcl-2) as well as decreased iNOS, Bcl-2 associated X protein (Bax), caspase-3, caspase-8, caspase-9, and tumor necrosis factor-α (TNF-α) expression. Nitrate increased total antioxidant capacity (TAC) and catalase (CAT) activity and decreased malondialdehyde (MDA) levels at month nine in serum and IR+ hearts. Conclusion: The favorable effects of nitrate against IR injury were associated with higher eNOS and Bcl-2 expression, CAT activity, TAC, and lower iNOS, Bax, caspase-3, caspase-8, caspase-9 and TNF-α expression, and MDA in the heart tissue. Nitrate preconditioning alleviated IR-induced myocardial injury in OVX rats; this effect was associated with eNOS upregulation before IR and the blunting of OVX-induced eNOS downregulation, iNOS upregulation, apoptosis, and oxidative stress in heart tissue after IR.
Collapse
Affiliation(s)
- Sajad Jeddi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasibeh Yousefzadeh
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Zarkesh
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular, and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, NY, United States
| | - Asghar Ghasemi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
Darabi Z, Siervo M, Webb RJ, McMahon N, Ghayour-Mobarhan M, Khayyatzadeh SS, Mazidi M. Dietary nitrate intake and association with markers of cardiometabolic risk in Iranian female adolescents. Eur J Clin Nutr 2024; 78:264-269. [PMID: 38212504 DOI: 10.1038/s41430-023-01378-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 10/31/2023] [Accepted: 11/27/2023] [Indexed: 01/13/2024]
Abstract
Dietary nitrates are thought to confer several cardiometabolic health benefits, including improvements in blood pressure and the plasma lipid profile. However, existing data from Iran is conflicting and there is a dearth of literature focusing on non-adult populations. A total of 988 adolescent girls were recruited from schools in different areas of Mashhad and Sabzevar, Iran. Dietary nitrate intake was assessed using a food frequency questionnaire and participants were categorized into quartiles based on this. Differences in participant characteristics between quartiles were assessed using one-way ANOVA and associations between total nitrate intake, nitrate intake from vegetables and cardiometabolic risk markers (blood lipid profile, fasting blood glucose, systolic and diastolic blood pressure) were assessed using linear regression. Nitrate intake from vegetables was positively correlated with triglycerides, even after adjusting for several variables (β = 0.086, 95% CI = 0.002-0.097; P = 0.043). Total nitrate intake was also significantly positively associated with serum triglycerides (β = 0.097, 95% CI = 0.010-0.084; P = 0.012); however, this relationship disappeared after adjusting for several variables. Significant interaction effects were observed between total nitrate intake, nitrate intake from vegetables, and vitamin C upon triglycerides (P < 0.01). No significant relationships were found between total nitrate intake, nitrate intake from vegetables, and other cardiometabolic risk markers. Our findings suggest there may be neutral or possibly detrimental cardiovascular effects of dietary nitrate and/or vitamin C intake which are not in agreement with contemporary literature and warrant further investigation.
Collapse
Affiliation(s)
- Zahra Darabi
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Research Center for Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mario Siervo
- School of Life Sciences, Division of Physiology, Pharmacology and Neuroscience, University of Nottingham, Queen's Medical Centre, Nottingham, UK
- Curtin Dementia Centre of Excellence, EnAble Institute, Curtin University, Kent Street, Bentley, WA, 6102, Australia
| | - Richard J Webb
- School of Health and Sport Sciences, Hope Park Campus, Liverpool Hope University, Taggart Avenue, Liverpool, L16 9JD, UK
| | - Nicholas McMahon
- School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, QLD, Australia
| | - Majid Ghayour-Mobarhan
- International UNESCO Center for Health Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sayyed Saeid Khayyatzadeh
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
- Research Center for Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Mohsen Mazidi
- Department of Twin Research, King's College London, London, UK
- Medical Research Council Population Health Research Unit, University of Oxford, Oxford, UK
- Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, UK
| |
Collapse
|
7
|
Zoughaib WS, Fry MJ, Singhal A, Coggan AR. Beetroot juice supplementation and exercise performance: is there more to the story than just nitrate? Front Nutr 2024; 11:1347242. [PMID: 38445207 PMCID: PMC10912565 DOI: 10.3389/fnut.2024.1347242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/31/2024] [Indexed: 03/07/2024] Open
Abstract
This mini-review summarizes the comparative effects of different sources of dietary nitrate (NO3-), beetroot juice (BRJ) and nitrate salts (NIT), on physiological function and exercise capacity. Our objectives were to determine whether BRJ is superior to NIT in enhancing exercise-related outcomes, and to explore the potential contribution of other putatively beneficial compounds in BRJ beyond NO3-. We conducted a comparative analysis of recent studies focused on the impact of BRJ versus NIT on submaximal oxygen consumption (VO2), endurance performance, adaptations to training, and recovery from muscle-damaging exercise. While both NO3- sources provide benefits, there is some evidence that BRJ may offer additional advantages, specifically in reducing VO2 during high-intensity exercise, magnifying performance improvements with training, and improving recovery post-exercise. These reported differences could be due to the hypothesized antioxidant and/or anti-inflammatory properties of BRJ resulting from the rich spectrum of phytonutrients it contains. However, significant limitations to published studies directly comparing BRJ and NIT make it quite challenging to draw any firm conclusions. We provide recommendations to help guide further research into the important question of whether there is more to the story of BRJ than just NO3-.
Collapse
Affiliation(s)
- William S. Zoughaib
- Department of Kinesiology, School of Health & Human Sciences, Indiana University Indianapolis, Indianapolis, IN, United States
| | - Madison J. Fry
- Department of Kinesiology, School of Health & Human Sciences, Indiana University Indianapolis, Indianapolis, IN, United States
| | - Ahaan Singhal
- School of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Andrew R. Coggan
- Department of Kinesiology, School of Health & Human Sciences, Indiana University Indianapolis, Indianapolis, IN, United States
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, United States
| |
Collapse
|
8
|
Cato LE, McKay AKA, L’Heureux JE, Vanhatalo A, Jones AM, Askew CD, Slater GJ, Burke LM. Low Carbohydrate, High Fat Diet Alters the Oral Microbiome without Negating the Nitrite Response to Beetroot Juice Supplementation. Nutrients 2023; 15:5123. [PMID: 38140382 PMCID: PMC10745889 DOI: 10.3390/nu15245123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/01/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
A low carbohydrate, high fat (LCHF) diet in athletes increases fat oxidation but impairs sports performance, potentially due to impaired exercise economy. Dietary nitrate supplementation can improve exercise economy via an increase in nitric oxide production, which is initiated by the reduction of nitrate to nitrite within the oral cavity. This reaction is dependent on the presence of nitrate-reducing oral bacteria, which can potentially be altered by dietary changes, including a LCHF diet. This study explored the effect of a LCHF diet on the oral microbiome and subsequent changes to plasma nitrite concentration following nitrate supplementation. Following five days of LCHF or high carbohydrate (HCHO) control dietary intervention, highly trained male race walkers consumed 140 mL beetroot juice containing 8.4 mmol nitrate; they then provided (a) blood samples for plasma nitrate and nitrite analysis and (b) saliva samples for 16S rRNA sequencing of the oral microbiome. The LCHF diet (n = 13) reduced oral bacterial diversity and changed the relative abundance of the genera Neisseria (+10%), Fusobacteria (+3%), Prevotella (-9%), and Veillonella (-4%), with no significant changes observed following the HCHO diet (n = 11). Following beetroot juice ingestion, plasma nitrite concentrations were higher for the LCHF diet compared to the HCHO diet (p = 0.04). However, the absence of an interaction with the trial (pre-post) (p = 0.71) suggests that this difference was not due to the dietary intervention. In summary, we found an increase in plasma nitrate and nitrite concentrations in response to nitrate supplementation independent of diet. This suggests the oral microbiome is adaptive to dietary changes and can maintain a nitrate reduction capacity despite a decrease in bacterial diversity following the LCHF diet.
Collapse
Affiliation(s)
- Louise E. Cato
- School of Health, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia; (C.D.A.); (G.J.S.)
| | - Alannah K. A. McKay
- Mary MacKillop Institute of Health Research, Australian Catholic University, Melbourne, VIC 3000, Australia; (A.K.A.M.); (L.M.B.)
| | - Joanna E. L’Heureux
- University of Exeter Medical School, University of Exeter, Exeter EX1 2LU, UK; (J.E.L.); (A.V.); (A.M.J.)
| | - Anni Vanhatalo
- University of Exeter Medical School, University of Exeter, Exeter EX1 2LU, UK; (J.E.L.); (A.V.); (A.M.J.)
| | - Andrew M. Jones
- University of Exeter Medical School, University of Exeter, Exeter EX1 2LU, UK; (J.E.L.); (A.V.); (A.M.J.)
| | - Christopher D. Askew
- School of Health, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia; (C.D.A.); (G.J.S.)
| | - Gary J. Slater
- School of Health, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia; (C.D.A.); (G.J.S.)
| | - Louise M. Burke
- Mary MacKillop Institute of Health Research, Australian Catholic University, Melbourne, VIC 3000, Australia; (A.K.A.M.); (L.M.B.)
| |
Collapse
|
9
|
Cottrell EC. Should the non-canonical pathway of nitric oxide generation be targeted in hypertensive pregnancies? Br J Pharmacol 2023. [PMID: 37921362 DOI: 10.1111/bph.16276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 11/04/2023] Open
Abstract
Hypertension in pregnancy is prevalent, affecting around 10% of pregnancies worldwide, and significantly increases the risk of adverse outcomes for both mothers and their babies. Current treatment strategies for pregnant women with hypertension are limited, and new approaches for the management of hypertension in pregnancy are urgently needed. Substantial evidence from non-pregnant subjects has demonstrated the potential for dietary nitrate supplementation to increase nitric oxide (NO) bioavailability and lower blood pressure, following bioactivation via the non-canonical NO pathway. Emerging data suggest this approach may also be of benefit in pregnant women, although studies are limited. This review aims to summarise the current evidence from preclinical and clinical studies of nitrate supplementation in pregnancy, drawing on data from non-pregnant populations where appropriate and highlighting key gaps in knowledge that remain to be addressed in future trials.
Collapse
Affiliation(s)
- Elizabeth C Cottrell
- Maternal and Fetal Health Research Centre, Division of Developmental Biology & Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| |
Collapse
|
10
|
Alharbi M, Stephan BC, Shannon OM, Siervo M. Does dietary nitrate boost the effects of caloric restriction on brain health? Potential physiological mechanisms and implications for future research. Nutr Metab (Lond) 2023; 20:45. [PMID: 37880786 PMCID: PMC10599060 DOI: 10.1186/s12986-023-00766-9] [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: 05/26/2023] [Accepted: 10/07/2023] [Indexed: 10/27/2023] Open
Abstract
Dementia is a highly prevalent and costly disease characterised by deterioration of cognitive and physical capacity due to changes in brain function and structure. Given the absence of effective treatment options for dementia, dietary and other lifestyle approaches have been advocated as potential strategies to reduce the burden of this condition. Maintaining an optimal nutritional status is vital for the preservation of brain function and structure. Several studies have recognised the significant role of nutritional factors to protect and enhance metabolic, cerebrovascular, and neurocognitive functions. Caloric restriction (CR) positively impacts on brain function via a modulation of mitochondrial efficiency, endothelial function, neuro-inflammatory, antioxidant and autophagy responses. Dietary nitrate, which serves as a substrate for the ubiquitous gasotransmitter nitric oxide (NO), has been identified as a promising nutritional intervention that could have an important role in improving vascular and metabolic brain regulation by affecting oxidative metabolism, ROS production, and endothelial and neuronal integrity. Only one study has recently tested the combined effects of both interventions and showed preliminary, positive outcomes cognitive function. This paper explores the potential synergistic effects of a nutritional strategy based on the co-administration of CR and a high-nitrate diet as a potential and more effective (than either intervention alone) strategy to protect brain health and reduce dementia risk.
Collapse
Affiliation(s)
- Mushari Alharbi
- School of Life Sciences, The University of Nottingham Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah, 22252, Saudi Arabia
| | - Blossom Cm Stephan
- Curtin Dementia Centre of Excellence, EnAble Institute, Curtin University, Kent Street, Bentley, WA, 6102, Australia
| | - Oliver M Shannon
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Mario Siervo
- Curtin Dementia Centre of Excellence, EnAble Institute, Curtin University, Kent Street, Bentley, WA, 6102, Australia.
| |
Collapse
|
11
|
Homem RV, Arisseto-Bragotto AP, Rodrigues E, Cladera-Olivera F. Theoretical estimation of nitrates and nitrites intake from food additives by the Brazilian population. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:1147-1163. [PMID: 37549245 DOI: 10.1080/19440049.2023.2240439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 08/09/2023]
Abstract
Sodium and potassium nitrates and nitrites are preservatives widely used in meat products and some cheese. They are important toxicologically but there is a lack of data on the exposure of the Brazilian population to these additives. This study aimed to verify the frequency of the use of nitrates and nitrites in processed foods in Brazil and to estimate their theoretical intake by the Brazilian population. A database was built of supermarket products containing nitrates, nitrites, and antioxidants. The Theoretical Maximum Daily Intake (TMDI) and TMDI balanced by the prevalence of food consumption (TMDI BPFC) were determined using consumption data from the Household Budget Surveys (2008/2009 and 2017/2018). The TMDI for nitrates and nitrites was lower than the Acceptable Daily Intake (ADI) for all population groups. Considering the prevalence of food consumption (consumers only), the TMDI BPFC values were lower than the ADI for nitrates (between 0.4 and 0.9 times the ADI) but very high values were obtained for nitrites (between 10 and 24 times the ADI). Our results suggest that the Brazilian population, especially some population groups, may be consuming unsafe amounts of nitrite. As a consequence, their health may be at risk.
Collapse
Affiliation(s)
- Raísa Vieira Homem
- Department of Food Science, Federal University of Rio Grande do Sul - Institute of Food Science and Technology, Porto Alegre, RS, Brazil
| | - Adriana Pavesi Arisseto-Bragotto
- Department of Food Science and Nutrition, Faculty of Food Engineering, FEA UNICAMP Rua Monteiro Lobato, State University of Campinas, Campinas, SP, Brazil
| | - Eliseu Rodrigues
- Department of Food Science, Federal University of Rio Grande do Sul - Institute of Food Science and Technology, Porto Alegre, RS, Brazil
| | - Florencia Cladera-Olivera
- Department of Food Science, Federal University of Rio Grande do Sul - Institute of Food Science and Technology, Porto Alegre, RS, Brazil
| |
Collapse
|
12
|
Yassaghi Y, Jeddi S, Yousefzadeh N, Kashfi K, Ghasemi A. Long-term inorganic nitrate administration protects against myocardial ischemia-reperfusion injury in female rats. BMC Cardiovasc Disord 2023; 23:411. [PMID: 37605135 PMCID: PMC10441752 DOI: 10.1186/s12872-023-03425-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 08/01/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND The favorable effects of nitrate against myocardial ischemia-reperfusion injury (MIRI) have primarily focused on male rats and in short term. Here we determine the impact of long-term nitrate intervention on baseline cardiac function and the resistance to MIRI in female rats. METHODS Female Wistar rats were randomly divided into untreated and nitrate-treated (100 mg/L sodium nitrate in drinking water for 9 months) groups (n = 14/group). At intervention end, levels of serum progesterone, nitric oxide metabolites (NOx), heart NOx concentration, and mRNA expressions of NO synthase isoforms (NOS), i.e., endothelial (eNOS), neuronal (nNOS), and inducible (iNOS), were measured. Isolated hearts were exposed to ischemia, and cardiac function indices (CFI) recorded. When the ischemia-reperfusion (IR) period ended, infarct size, NO metabolites, eNOS, nNOS, and iNOS expression were measured. RESULTS Nitrate-treated rats had higher serum progesterone (29.8%, P = 0.013), NOx (31.6%, P = 0.035), and higher heart NOx (60.2%, P = 0.067), nitrite (131%, P = 0.018), and eNOS expression (200%, P = 0.005). Nitrate had no significant effects on baseline CFI but it increased recovery of left ventricular developed pressure (LVDP, 19%, P = 0.020), peak rate of positive (+ dp/dt, 16%, P = 0.006) and negative (-dp/dt, 14%, P = 0.014) changes in left ventricular pressure and decreased left ventricular end-diastolic pressure (LVEDP, 17%, P < 0.001) and infarct size (34%, P < 0.001). After the IR, the two groups had significantly different heart nitrite, nitrate, NOx, and eNOS and iNOS mRNA expressions. CONCLUSIONS Long-term nitrate intervention increased the resistance to MIRI in female rats; this was associated with increased heart eNOS expression and circulating progesterone before ischemia and blunting ischemia-induced increased iNOS and decreased eNOS after MIRI.
Collapse
Affiliation(s)
- Younes Yassaghi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 24, Parvaneh Street, Yaman Street, P.O. Box: 19395-4763, Velenjak, Tehran, Iran
| | - Sajad Jeddi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 24, Parvaneh Street, Yaman Street, P.O. Box: 19395-4763, Velenjak, Tehran, Iran
| | - Nasibeh Yousefzadeh
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 24, Parvaneh Street, Yaman Street, P.O. Box: 19395-4763, Velenjak, Tehran, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular, and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, USA
| | - Asghar Ghasemi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 24, Parvaneh Street, Yaman Street, P.O. Box: 19395-4763, Velenjak, Tehran, Iran.
| |
Collapse
|
13
|
Yousefzadeh N, Jeddi S, Zarkesh M, Norouzirad R, Kashfi K, Ghasemi A. Protective effects of long-term nitrate administration against ovariectomy-induced kidney dysfunction in rats. Pharmacol Rep 2023:10.1007/s43440-023-00499-9. [PMID: 37258800 DOI: 10.1007/s43440-023-00499-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Menopause is associated with higher risks of chronic kidney disease. We determined the effect of nitrate on ovariectomy-induced kidney dysfunction METHODS: Control, ovariectomized (OVX), control + nitrate, and OVX + nitrate female Wistar rats (n = 10/group); sodium nitrate (100 mg/L) administered in drinking water for 9 months. Glomerular filtration rate (GFR) and albumin excretion rate (AER) were calculated from serum and urine parameters. At month 9, serum and kidney levels of nitric oxide (NO) metabolites (NOx), oxidative stress indices, and mRNA expression of endothelial NO synthase (eNOS) were measured; with histological analyses of the kidney. RESULTS Compared to controls, OVX rats had lower GFR (31%, p = 0.0079), higher glomerular tuft volume (30%, p = 0.0402), and Bowman's capsule space (39%, p = 0.0224). OVX rats had lower serum NOx (33%, p = 0.0061) and kidney eNOS mRNA expression (34%, p = 0.0368). Nitrate administration to: (i) control rats increased serum NOx (59%, p < 0.0001), with no effect on other parameters; (ii) OVX rats increased serum (85%, p < 0.0001) and kidney (106%, p = 0.0008) NOx values, and restored kidney eNOS expression to normal value. Nitrate administration to OVX rats increased GFR (36%, p = 0.0361) and restored glomerular tuft volume and Bowman's capsule space to normal values. In OVX rats, it also increased serum catalase (CAT) activity, serum and kidney total antioxidant capacity (TAC), and decreased serum malondialdehyde (MDA). CONCLUSIONS Low-dose long-term nitrate administration protects against ovariectomy-induced kidney dysfunction in rats. This effect is associated with reducing ovariectomy-induced oxidative stress and restoring eNOS-derived NO deficiency in systemic circulation and the kidney.
Collapse
Affiliation(s)
- Nasibeh Yousefzadeh
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Jeddi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Zarkesh
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Norouzirad
- Department of Biochemistry, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular, and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, Newyork, NY, USA
| | - Asghar Ghasemi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
14
|
Bondonno CP, Zhong L, Bondonno NP, Sim M, Blekkenhorst LC, Liu A, Rajendra A, Pokharel P, Erichsen DW, Neubauer O, Croft KD, Hodgson JM. Nitrate: The Dr. Jekyll and Mr. Hyde of human health? Trends Food Sci Technol 2023. [DOI: 10.1016/j.tifs.2023.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
|
15
|
Li W, Wu H, Xu X, Zhang Y. Environmental exposure to perchlorate, nitrate, and thiocyanate in relation to chronic kidney disease in the general US population, NHANES 2005-2016. Chin Med J (Engl) 2023:00029330-990000000-00571. [PMID: 37154820 DOI: 10.1097/cm9.0000000000002586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Few studies have explored the impact of perchlorate, nitrate, and thiocyanate (PNT) on kidney function. This study aimed to evaluate the association of urinary levels of PNT with renal function as well as the prevalence of chronic kidney disease (CKD) among the general population in the United States. METHODS This analysis included data from 13,373 adults (≥20 years) from the National Health and Nutrition Examination Survey 2005 to 2016. We used multivariable linear and logistic regression, to explore the associations of urinary PNT with kidney function. Restricted cubic splines were used to assess the potentially non-linear relationships between PNT exposure and outcomes. RESULTS After traditional creatinine adjustment, perchlorate (P-traditional) was positively associated with estimated glomerular filtration rate (eGFR) (adjusted β: 2.75; 95% confidence interval [CI]: 2.25 to 3.26; P < 0.001), and negatively associated with urinary albumin-to-creatinine ratio (ACR) (adjusted β: -0.05; 95% CI: -0.07 to -0.02; P = 0.001) in adjusted models. After both traditional and covariate-adjusted creatinine adjustment, urinary nitrate and thiocyanate were positively associated with eGFR (all P values <0.05), and negatively associated with ACR (all P values <0.05); higher nitrate or thiocyanate was associated with a lower risk of CKD (all P values <0.001). Moreover, there were L-shaped non-linear associations between nitrate, thiocyanate, and outcomes. In the adjusted models, for quartiles of PNT, statistically significant dose-response associations were observed in most relationships. Most results were consistent in the stratified and sensitivity analyses. CONCLUSIONS Exposures to PNT might be associated with kidney function, indicating a potential beneficial effect of environmental PNT exposure (especially nitrate and thiocyanate) on the human kidney.
Collapse
Affiliation(s)
- Wei Li
- Department of Plastic and Burns Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Hong Wu
- Department of Liver Surgery and Liver Transplantation, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu, Sichuan 610041, China
| | - Xuewen Xu
- Department of Plastic and Burns Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yange Zhang
- Department of Plastic and Burns Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| |
Collapse
|
16
|
McMahon NF, Brooker PG, Kadach S, Pavey TG, Leveritt MD. Estimating nitrate intake in the Australian diet: Design and validation of a food frequency questionnaire. J Hum Nutr Diet 2023; 36:169-180. [PMID: 35692098 PMCID: PMC10084179 DOI: 10.1111/jhn.13048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/07/2022] [Indexed: 01/19/2023]
Abstract
BACKGROUND Dietary nitrates may play a role in mediating several key physiological processes impacting health and/or exercise performance. However, current methods for assessing dietary nitrate (NO3 - ) consumption are inadequate. The present study aimed to examine the dietary nitrate intake in a sample of 50 healthy adults, as well as test the validity of a purposefully developed food frequency questionnaire (FFQ). METHODS Dietary nitrate intake was estimated over a week using (i) three 24-h dietary recalls; (ii) a short-term (7-day) FFQ; and (iii) a biomarker (urinary nitrate), in conjunction with a nitrate reference database. RESULTS Daily dietary nitrate intake estimates were 130.94 mg (average of three 24-h recalls) and 180.62 mg (FFQ). The mean urinary NO3 - excretion was 1974.79 µmol day-1 (or 917.9 µmol L-1 ). Despite the difference between the two dietary assessment methods, there was a moderate positive correlation (r = 0.736, ρ < 0.001) between the two tools. There was also a positive correlation between urinary NO3 - and 24-h recall data (r = 0.632, ρ < 0.001), as well as between urinary NO3 - and FFQ (r = 0.579, ρ < 0.001). CONCLUSIONS The ability to accurately estimate nitrate intakes depends on having suitable reference methods to estimate the concentrations of nitrate in the food supply, coupled with valid and reliable dietary assessment tools. Based on the findings from the present study, at an individual level, dietary recalls or records may be more accurate in estimating intakes of NO3 - . However, given the lower cost and time needed for administration relative to recalls, the FFQ has merit for estimating NO3 - intakes in health interventions, dietary surveys and surveillance programs.
Collapse
Affiliation(s)
- Nicholas F. McMahon
- School of Human Movement and Nutrition SciencesUniversity of QueenslandSt LuciaQLDAustralia
| | - Paige G. Brooker
- School of Human Movement and Nutrition SciencesUniversity of QueenslandSt LuciaQLDAustralia
| | - Stefan Kadach
- School of Sport and Health Sciences, College of Life and Environmental Sciences, St Luke's CampusUniversity of ExeterExeterUK
| | - Toby G. Pavey
- School of Exercise and Nutrition SciencesQueensland University of TechnologyKelvin GroveQLDAustralia
| | - Michael D. Leveritt
- School of Human Movement and Nutrition SciencesUniversity of QueenslandSt LuciaQLDAustralia
| |
Collapse
|
17
|
Srour B, Chazelas E, Druesne-Pecollo N, Esseddik Y, de Edelenyi FS, Agaësse C, De Sa A, Lutchia R, Debras C, Sellem L, Huybrechts I, Julia C, Kesse-Guyot E, Allès B, Galan P, Hercberg S, Pierre F, Deschasaux-Tanguy M, Touvier M. Dietary exposure to nitrites and nitrates in association with type 2 diabetes risk: Results from the NutriNet-Santé population-based cohort study. PLoS Med 2023; 20:e1004149. [PMID: 36649248 PMCID: PMC9844911 DOI: 10.1371/journal.pmed.1004149] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/24/2022] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Nitrites and nitrates occur naturally in water and soil and are commonly ingested from drinking water and dietary sources. They are also used as food additives, mainly in processed meats, to increase shelf life and to avoid bacterial growth. Experimental studies suggested both benefits and harmful effects of nitrites and nitrates exposure on type 2 diabetes (T2D) onset, but epidemiological and clinical data are lacking. We aimed to study these associations in a large population-based prospective cohort study, distinguishing foods and water-originated nitrites/nitrates from those from food additives. METHODS AND FINDINGS Overall, 104,168 adults from the French NutriNet-Santé cohort study (2009 to 2021, 79.1% female, mean age [SD] = 42.7 [14.5]) were included. Associations between self-reported exposure to nitrites and nitrates (evaluated using repeated 24-h dietary records, linked to a comprehensive food composition database and accounting for commercial names/brands details of industrial products) and risk of T2D were assessed using cause-specific multivariable Cox proportional hazard models adjusted for known risk factors (sociodemographic, anthropometric, lifestyle, medical history, and nutritional factors). During a median follow-up duration of 7.3 years (interquartile range: [3.2; 10.1] years), 969 incident T2D cases were ascertained. Total nitrites and foods and water-originated nitrites were both positively associated with a higher T2D risk (HRtertile 3 vs.1 = 1.27 (95% CI 1.04 to 1.54), Ptrend = 0.009 and 1.26 (95% CI 1.03 to 1.54), Ptrend = 0.02, respectively). Participants with higher exposure to additives-originated nitrites (i.e., above the sex-specific median) and specifically those having higher exposure to sodium nitrite (e250) had a higher T2D risk compared with those who were not exposed to additives-originated nitrites (HR higher consumers vs. non-consumers = 1.53 (95% CI 1.24 to 1.88), Ptrend < 0.001 and 1.54 (95% CI 1.26 to 1.90), Ptrend < 0.001, respectively). There was no evidence for an association between total, foods and water-originated, or additives-originated nitrates and T2D risk (all Ptrend = 0.7). No causal link can be established from this observational study. Main limitations include possible exposure measurement errors and the lack of validation versus specific nitrites/nitrates biomarkers; potential selection bias linked to the healthier behaviors of the cohort's participants compared to the general population; potential residual confounding linked to the observational design, as well as a self-reported, yet cross-checked, case ascertainment. CONCLUSIONS The findings of this large prospective cohort did not support any potential benefits for dietary nitrites and nitrates. They suggested that a higher exposure to both foods and water-originated and additives-originated nitrites was associated with higher T2D risk in the NutriNet-Santé cohort. This study provides a new piece of evidence in the context of current debates about updating regulations to limit the use of nitrites as food additives. The results need to be replicated in other populations. TRIAL REGISTRATION ClinicalTrials.gov NCT03335644 (https://clinicaltrials.gov/ct2/show/NCT03335644).
Collapse
Affiliation(s)
- Bernard Srour
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Eloi Chazelas
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Nathalie Druesne-Pecollo
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Younes Esseddik
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Fabien Szabo de Edelenyi
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Cédric Agaësse
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Alexandre De Sa
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Rebecca Lutchia
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Charlotte Debras
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Laury Sellem
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Inge Huybrechts
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
- International Agency for Research on Cancer, World Health Organization, Lyon, France
| | - Chantal Julia
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Public Health Department, Avicenne Hospital, AP-HP, Bobigny, France
| | - Emmanuelle Kesse-Guyot
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Benjamin Allès
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
| | - Pilar Galan
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Serge Hercberg
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
- Public Health Department, Avicenne Hospital, AP-HP, Bobigny, France
| | - Fabrice Pierre
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Mélanie Deschasaux-Tanguy
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| | - Mathilde Touvier
- Sorbonne Paris Nord University, Inserm U1153, Inrae U1125, Cnam, Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris-Cité (CRESS), Bobigny, France
- Nutrition And Cancer Research Network (NACRe Network), Jouy-en-Josas, France
| |
Collapse
|
18
|
Etemadi A, Buller ID, Hashemian M, Roshandel G, Poustchi H, Espinosa MM, Blount BC, Pfeiffer CM, Keshavarzi B, Flory AR, Nasseri-Moghaddam S, Dawsey SM, Freedman ND, Abnet CC, Malekzadeh R, Ward MH. Urinary nitrate and sodium in a high-risk area for upper gastrointestinal cancers: Golestan Cohort Study ☆. ENVIRONMENTAL RESEARCH 2022; 214:113906. [PMID: 35863453 PMCID: PMC9420831 DOI: 10.1016/j.envres.2022.113906] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The epidemiological evidence regarding the carcinogenicity of nitrate and sodium in drinking water is limited, partly because measuring the exposure at the individual level is complex. Most studies have used nitrate in water supplies as a proxy for individual exposure, but dietary intakes and other factors may contribute to the exposure. The present study investigates the factors associated with urinary nitrate and sodium in a high-risk area for esophageal and gastric cancers. METHODS For this cross-sectional study, we used data and samples collected in 2004-2008 during the enrollment phase of the Golestan Cohort Study from a random sample of 349 participants (300 individuals from 24 rural villages and 49 from the city of Gonbad), stratified by average water nitrate in their district, the source of drinking water, and the usual dietary intake of nitrate and sodium. Nitrate, sodium, and creatinine were measured in a spot urine sample collected at the time of interview. We used the provincial cancer registry data to calculate the cumulative incidence rates of esophageal and gastric cancers for each location through June 1, 2020, and used weighted partial Pearson correlation to compare the incidence rates with median urinary nitrate and sodium in each village or the city. RESULTS Among 349 participants (mean age±SD: 50.7 ± 8.6 years), about half (n = 170) used groundwater for drinking, and the use of groundwater was significantly more common in high-elevation locations (75.8%). The geometric mean of the creatinine-corrected urinary nitrate concentration was 68.3 mg/g cr (95%CI: 64.6,72.3), and the corresponding geometric mean for urinary sodium was 150.0 mmoL/g cr (95%CI: 139.6,161.1). After adjusting for confounders, urinary nitrate was associated with being a woman, drinking groundwater, and living in high-elevation locations, but not with estimated dietary intake. Urinary sodium concentration was significantly associated with monthly precipitation at the time of sampling but not with elevation or drinking water source. There were significant positive correlations between both median urinary nitrate and sodium in each location and esophageal cancer incidence rates adjusted for sex and age (r = 0.65 and r = 0.58, respectively, p < 0.01), but not with gastric cancer incidence. CONCLUSION In a rural population at high risk for esophageal and gastric cancers, nitrate excretion was associated with living at a higher elevation and using groundwater for drinking. The associations between nitrate and sodium excretion with esophageal cancer incidence warrant future investigation.
Collapse
Affiliation(s)
- Arash Etemadi
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA; Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Ian D Buller
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA; Cancer Prevention Fellowship Program, Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maryam Hashemian
- Departments of Biology, School of Art and Sciences, Utica College, Utica, NY, USA
| | - Gholamreza Roshandel
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Hossein Poustchi
- Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maria Morel Espinosa
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Benjamin C Blount
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Christine M Pfeiffer
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Behnam Keshavarzi
- Department of Earth Sciences, College of Science, Shiraz University, Shiraz, Iran
| | | | - Siavosh Nasseri-Moghaddam
- Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sanford M Dawsey
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Neal D Freedman
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Christian C Abnet
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Reza Malekzadeh
- Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mary H Ward
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
19
|
Siervo M, Babateen A, Alharbi M, Stephan B, Shannon O. Dietary nitrate and brain health. Too much ado about nothing or a solution for dementia prevention? Br J Nutr 2022; 128:1130-1136. [PMID: 36688430 DOI: 10.1017/s0007114522002434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Dementia is a significant public health priority with approximately 55 million cases worldwide, and this number is predicted to quadruple by 2050. Adherence to a healthy diet and achieving optimal nutritional status are vital strategies to improve brain health. The importance of this area of research has been consolidated into the new term ‘nutritional psychiatry’. Dietary nitrate, closely associated with the intake of fruits and vegetables, is a compound that is increased in dietary patterns such as the Mediterranean and MIND diets and has protective effects on cognition and brain health. Nitrate is characterised by a complex metabolism and is the precursor of the nitrate–nitrite–nitric oxide (NO) pathway contributing to systemic NO generation. A higher intake of dietary nitrate has been linked to protective effects on vascular outcomes including blood pressure and endothelial function. However, the current evidence supporting the protective effects of dietary nitrate on brain health is less convincing. This article aims to provide a critical appraisal of the current evidence for dietary nitrate supplementation for improving brain health and provide suggestions for future research.
Collapse
Affiliation(s)
- Mario Siervo
- School of Life Sciences, The University of Nottingham, Medical School, Nottingham, UK
| | - Abrar Babateen
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
- Faculty of Applied Medical Sciences, Clinical Nutrition Department, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mushari Alharbi
- School of Life Sciences, The University of Nottingham, Medical School, Nottingham, UK
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Blossom Stephan
- Institute of Mental Health, The University of Nottingham Medical School, Nottingham, UK
| | - Oliver Shannon
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| |
Collapse
|
20
|
McMahon NF, Brooker PG, Pavey TG, Leveritt MD. Nitrate, nitrite and nitrosamines in the global food supply. Crit Rev Food Sci Nutr 2022; 64:2673-2694. [PMID: 36168920 DOI: 10.1080/10408398.2022.2124949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Inorganic nitrate provided by either nitrate salts or food supplements may improve cardiometabolic health. However, current methods to assess dietary nitrate, nitrite and nitrosamine consumption are inadequate. The purpose of this study was to develop a reference database to estimate the levels of nitrate, nitrite and nitrosamines in the global food supply. A systematic literature search was undertaken; of the 5,747 articles screened, 448 met the inclusion criteria. The final database included data for 1,980 food and beverages from 65 different countries. There were 5,105 unique records for nitrate, 2,707 for nitrite, and 954 for nitrosamine. For ease of use, data were sorted into 12 categories; regarding nitrate and nitrite concentrations in food and beverages, 'vegetables and herbs' were most reported in the literature (n = 3,268 and n = 1,200, respectively). For nitrosamines, 'protein foods of animal origin' were most reported (n = 398 records). This database will allow researchers and practitioners to confidently estimate dietary intake of nitrate, nitrite and nitrosamines. When paired with health data, our database can be used to investigate associations between nitrate intake and health outcomes, and/or exercise performance and could support the development of key dietary nitrate intake guidelines.
Collapse
Affiliation(s)
- Nicholas F McMahon
- School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, Queensland, Australia
| | - Paige G Brooker
- School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, Queensland, Australia
| | - Toby G Pavey
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Michael D Leveritt
- School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, Queensland, Australia
| |
Collapse
|
21
|
Yousefzadeh N, Jeddi S, Afzali H, Kashfi K, Ghasemi A. Chronic nitrate administration increases the expression the genes involved in the browning of white adipose tissue in female rats. Cell Biochem Funct 2022; 40:750-759. [PMID: 36098488 DOI: 10.1002/cbf.3741] [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: 06/06/2022] [Revised: 08/06/2022] [Accepted: 08/19/2022] [Indexed: 11/08/2022]
Abstract
Nitrate, a nitric oxide (NO) donor, has antiobesity effect in female rats. This study hypothesized that the antiobesity effect of nitrate in female rats is due to the browning of white adipose tissue (WAT). Female Wistar rats (aged 8 months) were divided into two groups (n = 10/group): the control group received tap water and the nitrate group received water containing 100 mg/L of sodium nitrate for 9 months. At months 0, 3, 6, and 9, obesity indices were measured. At month 9, gonadal adipose tissue was used to measure messenger RNA (mRNA) and protein levels of peroxisome proliferator-activated receptor-γ (PPAR-γ), PPAR-γ coactivator 1-α (PGC1-α), uncoupling protein 1 (UCP1), and adipocyte density and area. After the 9-month intervention, nitrate-treated rats had lower body weight, body mass index, thoracic circumference, and abdominal circumference by 6.4% (p = .012), 9.1% (p = .029), 6.0% (p = .056), and 5.7% (p = .098), respectively. In addition, nitrate-treated rats had higher PPAR-γ (mRNA: 1.78-fold, p = .016 and protein: 19%, p = .076), PGC1-α (mRNA: 1.69-fold, p = .012 and protein: 68%, p = .001), and UCP1 (mRNA: 2.50-fold, p = .001 and protein: 81%, p = .001) in gonadal adipose tissue. Nitrate also reduced adipocyte area by 35% (p = .054) and increased adipocyte density by 31% (p = .086). In conclusion, antiobesity effect of nitrate in female rats is associated with increased browning of gonadal adipose tissue as indicated by higher expression of PPAR-γ, PGC1-α, and UCP1 and reduced adipocyte area and increased adipocyte density.
Collapse
Affiliation(s)
- Nasibeh Yousefzadeh
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Jeddi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamideh Afzali
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular, and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, New York, USA
| | - Asghar Ghasemi
- Endocrine Physiology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
22
|
Enhancement of Nitric Oxide Bioavailability by Modulation of Cutaneous Nitric Oxide Stores. Biomedicines 2022; 10:biomedicines10092124. [PMID: 36140225 PMCID: PMC9496039 DOI: 10.3390/biomedicines10092124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022] Open
Abstract
The generation of nitric oxide (NO) in the skin plays a critical role in wound healing and the response to several stimuli, such as UV exposure, heat, infection, and inflammation. Furthermore, in the human body, NO is involved in vascular homeostasis and the regulation of blood pressure. Physiologically, a family of enzymes termed nitric oxide synthases (NOS) generates NO. In addition, there are many methods of non-enzymatic/NOS-independent NO generation, e.g., the reduction of NO derivates (NODs) such as nitrite, nitrate, and nitrosylated proteins under certain conditions. The skin is the largest and heaviest human organ and contains a comparatively high concentration of these NODs; therefore, it represents a promising target for many therapeutic strategies for NO-dependent pathological conditions. In this review, we give an overview of how the cutaneous NOD stores can be targeted and modulated, leading to a further accumulation of NO-related compounds and/or the local and systemic release of bioactive NO, and eventually, NO-related physiological effects with a potential therapeutical use for diseases such as hypertension, disturbed microcirculation, impaired wound healing, and skin infections.
Collapse
|
23
|
A food composition database for assessing nitrate intake from plant-based foods. Food Chem 2022; 394:133411. [DOI: 10.1016/j.foodchem.2022.133411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/31/2022] [Accepted: 06/04/2022] [Indexed: 11/23/2022]
|
24
|
Wang Y, Chen W, Zhou J, Wang Y, Wang H, Wang Y. Nitrate Metabolism and Ischemic Cerebrovascular Disease: A Narrative Review. Front Neurol 2022; 13:735181. [PMID: 35309590 PMCID: PMC8927699 DOI: 10.3389/fneur.2022.735181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 01/04/2022] [Indexed: 11/23/2022] Open
Abstract
Inorganic and organic nitrates are present in vivo and in vitro. Inorganic nitrate is considered a pool of nitric oxide (NO), but it can be converted into nitrite and NO through various mechanisms. It plays an important role in the regulation of complex physiological and biochemical reactions, such as anti-inflammatory processes and the inhibition of platelet aggregation, which are closely related to the pathology and treatment of cerebrovascular disease. Ischemic cerebrovascular disease is characterized by high incidence, recurrence, and disability rates. Nitrate, nitrite, and NO were recently found to be involved in cerebrovascular disease. In this review, we describe the relationship between cerebrovascular disease and nitrate metabolism to provide a basis for further advances in laboratory and clinical medicine.
Collapse
Affiliation(s)
- Yicong Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
| | - Weiqi Chen
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
| | - Jian Zhou
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- School of Stomatology, Capital Medical University, Beijing, China
| | - Yongjun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Hao Wang
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- Department of Stomatology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Hao Wang
| | - Yilong Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- Yilong Wang
| |
Collapse
|
25
|
Bath PM, Skinner CJC, Bath CS, Woodhouse LJ, Korovesi AAK, Long H, Havard D, Coleman CM, England TJ, Leyland V, Lim WS, Montgomery AA, Royal S, Avery A, Webb AJ, Gordon AL. Dietary nitrate supplementation for preventing and reducing the severity of winter infections, including COVID-19, in care homes (BEET-Winter): a randomised placebo-controlled feasibility trial. Eur Geriatr Med 2022; 13:1343-1355. [PMID: 36385690 PMCID: PMC9668238 DOI: 10.1007/s41999-022-00714-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022]
Abstract
PURPOSE Infections cause considerable care home morbidity and mortality. Nitric oxide (NO) has broad-spectrum anti-viral, bacterial and yeast activity in vitro. We assessed the feasibility of supplementing dietary nitrate (NO substrate) intake in care home residents. METHODS We performed a cluster-randomised placebo-controlled trial in UK residential and nursing care home residents and compared nitrate containing (400 mg) versus free (0 mg daily) beetroot juice given for 60 days. Outcomes comprised feasibility of recruitment, adherence, salivary and urinary nitrate, and ordinal infection/clinical events. RESULTS Of 30 targeted care homes in late 2020, 16 expressed interest and only 6 participated. 49 residents were recruited (median 8 [interquartile range 7-12] per home), mean (standard deviation) age 82 (8) years, with proxy consent 41 (84%), advance directive for hospital non-admission 8 (16%) and ≥ 1 doses of COVID-19 vaccine 37 (82%). Background dietary nitrate was < 30% of acceptable daily intake. 34 (76%) residents received > 50% of juice. Residents randomised to nitrate vs placebo had higher urinary nitrate levels, median 50 [18-175] v 18 [10-50] mg/L, difference 25 [0-90]. Data paucity precluded clinical between-group comparisons; the outcome distribution was as follows: no infection 32 (67%), uncomplicated infection 0, infection requiring healthcare support 11 (23%), all-cause hospitalisation 5 (10%), all-cause mortality 0. Urinary tract infections were most common. CONCLUSIONS Recruiting UK care homes during the COVID-19 pandemic was partially successful. Supplemented dietary nitrate was tolerated and elevated urinary nitrate. Together, infections, hospitalisations and deaths occurred in 33% of residents over 60 days. A larger trial is now required. TRIAL REGISTRATION ISRCTN51124684. Application date 7/12/2020; assignment date 13/1/2021.
Collapse
Affiliation(s)
- Philip M. Bath
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK ,Stroke, Nottingham University Hospitals NHS Trust, Nottingham, NG7 2UH Nottinghamshire UK
| | - Cameron J. C. Skinner
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK
| | - Charlotte S. Bath
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK
| | - Lisa J. Woodhouse
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK
| | | | - Hongjiang Long
- School of Biosciences, University of Nottingham, Sutton Bonington, LE12 5RD UK
| | - Diane Havard
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK
| | - Christopher M. Coleman
- Division of Infection, Immunity and Microbes, School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH UK
| | - Timothy J. England
- Stroke Trials Unit, Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, South Block D Floor, Nottingham, NG7 2UH UK ,Department of Stroke, University Hospitals of Derby and Burton, Derby, DE22 3NE UK
| | | | - Wei Shen Lim
- Respiratory Medicine, Nottingham University Hospitals NHS Trust, Nottingham, NG5 1PB UK
| | - Alan A. Montgomery
- Nottingham Clinical Trials Unit, School of Medicine, University of Nottingham, Nottingham, NG7 2RD UK
| | - Simon Royal
- University of Nottingham Health Service, Cripps Health Centre, University Park, Nottingham, NG7 2QW UK
| | - Amanda Avery
- School of Biosciences, University of Nottingham, Sutton Bonington, LE12 5RD UK
| | - Andrew J. Webb
- Clinical Pharmacology, School of Cardiovascular Medicine and Sciences, Kings College London and British Heart Foundation Centre of Research Excellence, St Thomas’ Hospital, London, SE1 7EH UK
| | - Adam L. Gordon
- Injury, Recovery and Inflammation Sciences, School of Medicine, University of Nottingham, Derby, DE22 3NE Derbyshire UK ,NIHR Applied Research Collaboration-East Midlands (ARC-EM), Nottingham, UK
| | | |
Collapse
|
26
|
Kotopoulou S, Zampelas A, Magriplis E. Dietary nitrate and nitrite and human health: a narrative review by intake source. Nutr Rev 2021; 80:762-773. [PMID: 34919725 DOI: 10.1093/nutrit/nuab113] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Nitrate and nitrite are plant nutrients that, although ubiquitous in plant foods, are highly controversial substances in human nutrition because they are also used as additives in processed foods and may be found as contaminants in drinking water. The aim for this narrative review is to provide a thorough insight into the current literature on the relationship between dietary nitrate and nitrite and the health risks and benefits by source of intake. The results highlight beneficial effects of nitrate and nitrite consumption from plant origin on cardiovascular disease and, to date, no positive correlation has been reported with cancer. On the contrary, high intake of these compounds from processed animal-based foods is related to an increased risk of gastro-intestinal cancer. Nitrate in drinking water also raises some concern, because it appears to be related to adverse health effects. The up-to-date debate on the role of nitrate and nitrite in human nutrition seems to be justified and more research is required to verify safe consumption.
Collapse
Affiliation(s)
- Sotiria Kotopoulou
- S. Kotopoulou, A. Zampelas, and E. Magriplis are with the Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece. S. Kotopoulou and A. Zampelas are with the Hellenic Food Authority, Athens, Greece
| | - Antonis Zampelas
- S. Kotopoulou, A. Zampelas, and E. Magriplis are with the Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece. S. Kotopoulou and A. Zampelas are with the Hellenic Food Authority, Athens, Greece
| | - Emmanuella Magriplis
- S. Kotopoulou, A. Zampelas, and E. Magriplis are with the Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece. S. Kotopoulou and A. Zampelas are with the Hellenic Food Authority, Athens, Greece
| |
Collapse
|
27
|
Zhong L, Liu AH, Blekkenhorst LC, Bondonno NP, Sim M, Woodman RJ, Croft KD, Lewis JR, Hodgson JM, Bondonno CP. Development of a Food Composition Database for Assessing Nitrate and Nitrite Intake from Animal-based Foods. Mol Nutr Food Res 2021; 66:e2100272. [PMID: 34792849 PMCID: PMC9540118 DOI: 10.1002/mnfr.202100272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 10/04/2021] [Indexed: 01/28/2023]
Abstract
Scope Nitrate and nitrite are approved food additives in some animal‐based food products. However, nitrate and nitrite in foods are strictly regulated due to health concerns over methaemoglobinaemia and the potential formation of carcinogenic nitrosamines. In contrast, plants (like leafy vegetables) naturally accumulate nitrate ions; a growing body of research reveals beneficial metabolic effects of nitrate via its endogenous conversion to nitric oxide. To refine the association of dietary nitrate and nitrite intake with health outcomes, reliable measures of nitrate and nitrite intake from dietary food records are required. While a vegetable nitrate content database has been developed, there is a need for a comprehensive up‐to‐date nitrate and nitrite content database of animal‐based foods. Methods and Results A systematic literature search (1980–September 2020) on the nitrate and nitrite content of animal‐based foods is carried out. Nitrate and nitrite concentration data and other relevant information are extracted and compiled into a database. The database contains 1921 entries for nitrate and 2077 for nitrite, extracted from 193 publications. The highest median nitrate content is observed in chorizo (median [IQR]; 101.61 [60.05–105.93] mg kg‐1). Canned fish products have the highest median nitrite level (median [IQR]; 20.32 [6.16–30.16] mg kg‐1). By subgroup, the median nitrate value in industrial processed meat products (e.g., uncured burger, patties and sausages), whole milk powder and in particular red meat are higher than cured meat products. Processed meat products from high‐income regions have lower median nitrate and nitrite content than those of middle‐income regions. Conclusion This database can now be used to investigate the associations between nitrate and nitrite dietary intake and health outcomes in clinical trials and observational studies.
Collapse
Affiliation(s)
- Liezhou Zhong
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Alex H Liu
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia
| | - Lauren C Blekkenhorst
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia
| | - Nicola P Bondonno
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,The Danish Cancer Society Research Centre, Copenhagen, Denmark
| | - Marc Sim
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia.,Royal Perth Hospital Research Foundation, Perth, Western Australia, Australia
| | - Richard J Woodman
- Flinders Centre for Epidemiology and Biostatistics, Flinders University, Adelaide, SA, Australia
| | - Kevin D Croft
- School of Biomedical Sciences, Royal Perth Hospital Unit, University of Western Australia, Perth, Western Australia, Australia
| | - Joshua R Lewis
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia.,Centre for Kidney Research, Children's Hospital at Westmead, School of Public Health, Sydney Medical School, the University of Sydney, New South Wales, Australia
| | - Jonathan M Hodgson
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia
| | - Catherine P Bondonno
- Institute for Nutrition Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia.,Discipline of Internal Medicine, Medical School, The University of Western Australia, Perth, Western Australia, Australia.,The Danish Cancer Society Research Centre, Copenhagen, Denmark
| |
Collapse
|
28
|
McGrattan AM, Stephan BCM, Shannon OM, Mazidi M, Gilchrist M, Smallwood M, Winyard P, McMahon N, Blekkenhorst LC, Mohan D, Bandinelli S, Robinson L, Ferrucci L, Siervo M. Independent and interactive associations of dietary nitrate and salt intake with blood pressure and cognitive function: a cross-sectional analysis in the InCHIANTI study. Int J Food Sci Nutr 2021; 73:491-502. [PMID: 34783276 DOI: 10.1080/09637486.2021.1993157] [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: 01/14/2023]
Abstract
Blood pressure (BP) control is a key target for interventions to reduce cognitive decline. This cross-sectional study explored associations between objective (24-hour urine excretion) and subjective (food frequency questionnaire [FFQ]) measures of dietary sodium and nitrate intakes with cognitive function and resting BP in the InCHIANTI cohort. Baseline data from 989 participants aged >50 years were included. In fully adjusted models, participants with concurrent high nitrate and low sodium (Odds Ratio (OR)=0.49, 95%CI 0.32-0.76, p = 0.001) and high nitrate and high sodium (OR = 0.49, 95%CI 0.32-0.77, p = 0.002) 24-hour urinary concentrations had lower odds of high BP than participants with low nitrate and high sodium concentrations. We found no significant associations between sodium and nitrate intakes (24-hour urinary concentrations and FFQ) and poor cognitive performance. Urinary nitrate excretion was associated with lower BP and results appeared to be independent of sodium intake. Further analyses in longitudinal studies are required to substantiate these findings.
Collapse
Affiliation(s)
- Andrea M McGrattan
- School of Biomedical, Nutritional and Sport Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | | | - Oliver M Shannon
- Faculty of Medical Sciences, Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Mohsen Mazidi
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK.,Nuffield Department of Population Health, Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), University of Oxford, Oxford, UK
| | - Mark Gilchrist
- Institute of Biomedical and Clinical Sciences, University of Exeter and NIHR Exeter Clinical Research Facility, Exeter, Devon, UK
| | | | - Paul Winyard
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - Nicholas McMahon
- School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, QLD, Australia
| | - Lauren C Blekkenhorst
- School of Medical and Health Sciences, Institute for Nutrition Research, Edith Cowan University, Perth, WA, Australia.,Medical School, The University of Western Australia, Perth, WA, Australia
| | - Devi Mohan
- Global Public Health, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Stefania Bandinelli
- Laboratory of Clinical Epidemiology, InCHIANTI Study Group, LHTC Local Health Tuscany Center, Florence, Italy
| | - Louise Robinson
- Faculty of Medical Sciences, Population Health Sciences Institute, Newcastle University, Newcastle up-on Tyne, UK
| | - Luigi Ferrucci
- Biomedical Research Centre, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Mario Siervo
- School of Life Sciences, University of Nottingham, Nottingham, UK
| |
Collapse
|
29
|
Liu Y, Croft KD, Caparros-Martin J, O'Gara F, Mori TA, Ward NC. Beneficial effects of inorganic nitrate in non-alcoholic fatty liver disease. Arch Biochem Biophys 2021; 711:109032. [PMID: 34520731 DOI: 10.1016/j.abb.2021.109032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 12/12/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is considered the hepatic representation of the metabolic disorders. Inorganic nitrate/nitrite can be converted to nitric oxide, regulate glucose metabolism, lower lipid levels, and reduce inflammation, thus raising the hypothesis that inorganic nitrate/nitrite could be beneficial for improving NAFLD. This study assessed the therapeutic effects of chronic dietary nitrate on NAFLD in a mouse model. 60 ApoE-/- mice were fed a high-fat diet (HFD) for 12 weeks to allow for the development of atherosclerosis with associated NAFLD. The mice were then randomly assigned to different groups (20/group) for a further 12 weeks: (i) HFD + NaCl (1 mmol/kg/day), (ii) HFD + NaNO3 (1 mmol/kg/day), and (iii) HFD + NaNO3 (10 mmol/kg/day). A fourth group of ApoE-/- mice consumed a normal chow diet for the duration of the study. At the end of the treatment, caecum contents, serum, and liver were collected. Consumption of the HFD resulted in significantly greater lipid accumulation in the liver compared to mice on the normal chow diet. Mice whose HFD was supplemented with dietary nitrate for the second half of the study, showed an attenuation in hepatic lipid accumulation. This was also associated with an increase in hepatic AMPK activity compared to mice on the HFD. In addition, a significant difference in bile acid profile was detected between mice on the HFD and those receiving the high dose nitrate supplemented HFD. In conclusion, dietary nitrate attenuates the progression of liver steatosis in ApoE-/- mice fed a HFD.
Collapse
Affiliation(s)
- Yang Liu
- School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Kevin D Croft
- School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Jose Caparros-Martin
- Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA, Australia
| | - Fergal O'Gara
- Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA, Australia; BIOMERIT Research Centre, School of Microbiology, University College Cork, T12 YN60, Cork, Ireland
| | - Trevor A Mori
- Medical School, University of Western Australia, Perth, WA, Australia
| | - Natalie C Ward
- Medical School, University of Western Australia, Perth, WA, Australia; Dobney Hypertension Centre, Medical School, University of Western Australia, Perth, WA, Australia.
| |
Collapse
|
30
|
Yousefzadeh N, Jeddi S, Shokri M, Afzali H, Norouzirad R, Kashfi K, Ghasemi A. Long Term Sodium Nitrate Administration Positively Impacts Metabolic and Obesity Indices in Ovariectomized Rats. Arch Med Res 2021; 53:147-156. [PMID: 34696904 DOI: 10.1016/j.arcmed.2021.09.007] [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: 04/06/2021] [Revised: 09/07/2021] [Accepted: 09/30/2021] [Indexed: 11/02/2022]
Abstract
BACKGROUND In postmenopausal women, nitric oxide (NO) deficiency is associated with obesity and type 2 diabetes (T2D). This study aims at determining the long-term effects of low-dose nitrate administration on metabolic and obesity indices in ovariectomized (OVX) rats. METHODS OVX rat model was induced using the two dorsolateral skin incision method. Two months after ovariectomy, rats were divided into three groups (n = 10/group): Control, OVX, and OVX+nitrate, and the latter received sodium nitrate at a dose of 100 mg/L in their drinking water for nine months. Fasting serum glucose and lipid profile were measured every month. A glucose tolerance test was performed at months 1, 3, and 9 (the end of the study). Obesity indices were calculated, and histological analyses were performed on the gonadal adipose tissues at month 9. RESULTS OVX rats had impaired fasting glucose, glucose intolerance, and dyslipidemia with higher obesity indices at month 9. Nitrate improved glucose and lipid metabolism in OVX rats and decreased body weight (6.9%), body mass index (12.5%), Lee index (5.4%), adiposity index (23.9%), abdominal circumference (10.5%), and thoracic circumference (17.1%). Also, nitrate decreased adipocyte area by 49% and increased adipocyte density by 193% in gonadal adipose tissue. CONCLUSION Long-term low-dose nitrate administration improves glucose and lipid metabolism in OVX rats in association with decreasing OVX-induced adiposity, increasing adipocyte density, and decreasing adipocyte area. These findings provide support for a potential therapeutic role of nitrate in postmenopausal women with some features of metabolic syndrome.
Collapse
Affiliation(s)
- Nasibeh Yousefzadeh
- Endocrine Physiology Research Center, Research institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Jeddi
- Endocrine Physiology Research Center, Research institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Shokri
- Endocrine Physiology Research Center, Research institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamideh Afzali
- Endocrine Physiology Research Center, Research institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Norouzirad
- School of Allied Medical Sciences, Dezful University of Medical Sciences, Dezful, Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, NY, USA
| | - Asghar Ghasemi
- Endocrine Physiology Research Center, Research institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
31
|
Akan S, Tuna Gunes N, Erkan M. Red beetroot: Health benefits, production techniques, and quality maintaining for food industry. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Selen Akan
- Faculty of Agriculture Department of Horticulture Ankara University Ankara Turkey
| | - Nurdan Tuna Gunes
- Faculty of Agriculture Department of Horticulture Ankara University Ankara Turkey
| | - Mustafa Erkan
- Faculty of Agriculture Department of Horticulture Akdeniz University Antalya Turkey
| |
Collapse
|
32
|
Shannon OM, Easton C, Shepherd AI, Siervo M, Bailey SJ, Clifford T. Dietary nitrate and population health: a narrative review of the translational potential of existing laboratory studies. BMC Sports Sci Med Rehabil 2021; 13:65. [PMID: 34099037 PMCID: PMC8186051 DOI: 10.1186/s13102-021-00292-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/26/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Dietary inorganic nitrate (NO3-) is a polyatomic ion, which is present in large quantities in green leafy vegetables and beetroot, and has attracted considerable attention in recent years as a potential health-promoting dietary compound. Numerous small, well-controlled laboratory studies have reported beneficial health effects of inorganic NO3- consumption on blood pressure, endothelial function, cerebrovascular blood flow, cognitive function, and exercise performance. Translating the findings from small laboratory studies into 'real-world' applications requires careful consideration. MAIN BODY This article provides a brief overview of the existing empirical evidence basis for the purported health-promoting effects of dietary NO3- consumption. Key areas for future research are then proposed to evaluate whether promising findings observed in small animal and human laboratory studies can effectively translate into clinically relevant improvements in population health. These proposals include: 1) conducting large-scale, longer duration trials with hard clinical endpoints (e.g. cardiovascular disease incidence); 2) exploring the feasibility and acceptability of different strategies to facilitate a prolonged increase in dietary NO3- intake; 3) exploitation of existing cohort studies to explore associations between NO3- intake and health outcomes, a research approach allowing larger samples sizes and longer duration follow up than is feasible in randomised controlled trials; 4) identifying factors which might account for individual differences in the response to inorganic NO3- (e.g. sex, genetics, habitual diet) and could assist with targeted/personalised nutritional interventions; 5) exploring the influence of oral health and medication on the therapeutic potential of NO3- supplementation; and 6) examining potential risk of adverse events with long term high- NO3- diets. CONCLUSION The salutary effects of dietary NO3- are well established in small, well-controlled laboratory studies. Much less is known about the feasibility and efficacy of long-term dietary NO3- enrichment for promoting health, and the factors which might explain the variable responsiveness to dietary NO3- supplementation between individuals. Future research focussing on the translation of laboratory data will provide valuable insight into the potential applications of dietary NO3- supplementation to improve population health.
Collapse
Affiliation(s)
- Oliver M Shannon
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Chris Easton
- Institute for Clinical Exercise and Health Science, University of the West of Scotland, Blantyre, Scotland, UK
| | - Anthony I Shepherd
- School of Sport, Health & Exercise Science, University of Portsmouth, Portsmouth, UK
| | - Mario Siervo
- School of Life Sciences, The University of Nottingham Medical School, Queen's Medical Centre, Nottingham, UK
| | - Stephen J Bailey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Tom Clifford
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.
| |
Collapse
|
33
|
Yasaminshirazi K, Hartung J, Fleck M, Graeff-Hönninger S. Impact of Cold Storage on Bioactive Compounds and Their Stability of 36 Organically Grown Beetroot Genotypes. Foods 2021; 10:foods10061281. [PMID: 34199724 PMCID: PMC8230214 DOI: 10.3390/foods10061281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/29/2021] [Accepted: 06/02/2021] [Indexed: 12/26/2022] Open
Abstract
In order to exploit the functional properties of fresh beetroot all year round, maintaining the health-benefiting compounds is the key factor. Thirty-six beetroot genotypes were evaluated regarding their content of total dry matter, total phenolic compounds, betalain, nitrate, and total soluble sugars directly after harvest and after cold storage periods of one and four months. Samples were collected from two field experiments, which were conducted under organic conditions in Southwestern Germany in 2017 and 2018. The outcome of this study revealed a significant influence of genotype (p < 0.05) on all measured compounds. Furthermore, significant impacts were shown for storage period on total dry matter content, nitrate, and total phenolic compounds. The medians of nitrate content based on the genotypes studied within the experiment ranged between 4179 ± 1267-20,489 ± 2988 mg kg-1 DW (dry weight), and that for the total phenolic compounds varied between 201.45 ± 13.13 mg GAE 100 g-1 DW and 612.39 ± 40.58 mg GAE 100 g-1 DW (milligrams of gallic acid equivalents per 100 g of dry weight). According to the significant influence of the interactions of storage period and genotype on total soluble sugars and betalain, the decrease or increase in the content of the assessed compounds during the cold storage noted to be genotype-specific. Therefore, to benefit beetroots with retained quality for an extended time after harvest, selection of the suitable genotype based on the intended final use is recommended.
Collapse
Affiliation(s)
- Khadijeh Yasaminshirazi
- Group of Cropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, Fruwirthstr. 23, 70599 Stuttgart, Germany;
- Correspondence: ; Tel.: +49-711-459-24186
| | - Jens Hartung
- Department of Biostatistics, Institute of Crop Science, University of Hohenheim, Fruwirthstr. 23, 70599 Stuttgart, Germany;
| | - Michael Fleck
- Kultursaat e.V., Kronstraβe 24, 61209 Echzell, Germany;
| | - Simone Graeff-Hönninger
- Group of Cropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, Fruwirthstr. 23, 70599 Stuttgart, Germany;
| |
Collapse
|
34
|
Pereira LCR, Shannon OM, Mazidi M, Babateen AM, Ashor AW, Stephan BCM, Siervo M. Relationship between urinary nitrate concentrations and cognitive function in older adults: findings from the NHANES survey. Int J Food Sci Nutr 2021; 72:805-815. [PMID: 33397165 DOI: 10.1080/09637486.2020.1868411] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This study evaluated the association of urinary nitrate concentrations with cognition in older subjects enrolled in the NHANES study. We also explored whether associations between urinary nitrate and cognition were modified by cardiovascular risk, vitamin D status and vitamin C intake. Two NHANES cycles were merged (2011-2012 and 2013-2014) and a total of 1,015 adults aged 60-80 (69.4 ± 0.3) years were included. Cognition was assessed using the Word List Learning, Word List Recall, Animal Fluency and the Digit Symbol Substitution tests. Urinary nitrate was analysed using electrospray tandem mass spectrometry. Urinary nitrate concentrations were not associated with cognitive performance on any of the cognitive tests. Associations were also not significant in subjects at greater risk for cognitive impairment (i.e. high cardiovascular risk and non-optimal vitamin D status). Longitudinal analyses are needed to explore the associations of urinary nitrate concentrations with dietary nitrate intake and cognitive function.
Collapse
Affiliation(s)
| | - Oliver Michael Shannon
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle on Tyne, UK
| | - Mohsen Mazidi
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Abrar Mohammed Babateen
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle on Tyne, UK.,Faculty of Applied Medical Sciences, Clinical Nutrition Department, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ammar Waham Ashor
- Department of Internal Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | | | - Mario Siervo
- School of Life Sciences, The University of Nottingham Medical School, Queen's Medical Centre, Nottingham, UK
| |
Collapse
|
35
|
dos S. Baião D, da Silva DVT, Paschoalin VMF. Beetroot, a Remarkable Vegetable: Its Nitrate and Phytochemical Contents Can be Adjusted in Novel Formulations to Benefit Health and Support Cardiovascular Disease Therapies. Antioxidants (Basel) 2020; 9:antiox9100960. [PMID: 33049969 PMCID: PMC7600128 DOI: 10.3390/antiox9100960] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 02/06/2023] Open
Abstract
The cardioprotective effects of dietary nitrate from beetroot in healthy and hypertensive individuals are undeniable and irrefutable. Nitrate and nitrate-derived nitrite are precursors for nitric oxide synthesis exhibiting an effect on cardiomyocytes and myocardial ischemia/reperfusion, improving endothelial function, reducing arterial stiffness and stimulating smooth muscle relaxation, decreasing systolic and diastolic blood pressures. Beetroot phytochemicals like betanin, saponins, polyphenols, and organic acids can resist simulated gastrointestinal digestion, raising the hypothesis that the cardioprotective effects of beetroots result from the combination of nitrate/nitrite and bioactive compounds that limit the generation of reactive oxygen species and modulate gene expression. Nitrate and phytochemical concentrations can be adjusted in beet formulations to fulfill requirements for acute or long-term supplementations, enhancing patient adherence to beet intervention. Based on in vitro, in vivo, and clinical trials, beet nitrate and its bioactive phytochemicals are promising as a novel supportive therapy to ameliorate cardiovascular diseases.
Collapse
|
36
|
McGrattan A, Mohan D, Chua PW, Mat Hussin A, Soh YC, Alawad M, Bin Kassim Z, Bin Mohd Ghazali AN, Stephan B, Allotey P, Reidpath DD, Robinson L, Siervo M. Feasibility and acceptability of a dietary intervention study to reduce salt intake and increase high-nitrate vegetable consumption among middle-aged and older Malaysian adults with elevated blood pressure: a study protocol. BMJ Open 2020; 10:e035453. [PMID: 32859661 PMCID: PMC7454174 DOI: 10.1136/bmjopen-2019-035453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Global population ageing is one of the key factors linked to the projected rise of dementia incidence. Hence, there is a clear need to identify strategies to overcome this expected health burden and have a meaningful impact on populations' health worldwide. Current evidence supports the role of modifiable dietary and lifestyle risk factors in reducing the risk of dementia. In South-East Asia, changes in eating and lifestyle patterns under the influence of westernised habits have resulted in significant increases in the prevalence of metabolic, cardiovascular and neurodegenerative non-communicable diseases (NCDs). Low vegetable consumption and high sodium intake have been identified as key contributors to the increased prevalence of NCDs in these countries. Therefore, nutritional and lifestyle strategies targeting these dietary risk factors are warranted. The overall objective of this randomised feasibility trial is to demonstrate the acceptability of a dietary intervention to increase the consumption of high-nitrate green leafy vegetables and reduce salt intake over 6 months among Malaysian adults with raised blood pressure. METHODS AND ANALYSIS Primary outcomes focus on feasibility measures of recruitment, retention, implementation and acceptability of the intervention. Secondary outcomes will include blood pressure, cognitive function, body composition and physical function (including muscle strength and gait speed). Adherence to the dietary intervention will be assessed through collection of biological samples, 24-hour recall and Food Frequency Questionnaire. A subgroup of participants will also complete postintervention focus groups to further explore the feasibility considerations of executing a larger trial, the ability of these individuals to make dietary changes and the barriers and facilitators associated with implementing these changes. ETHICS AND DISSEMINATION Ethical approval has been obtained from Monash University Human Research Ethics Committee and Medical Research and Ethics Committee of Malaysia. Results of the study will be disseminated via peer-reviewed publications and presentations at national and international conferences.ISRCTN47562685; Pre-results.
Collapse
Affiliation(s)
- Andrea McGrattan
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Devi Mohan
- Global Public Health. Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
- South East Asia Community Observatory (SEACO), Monash University Malaysia, Segamat, Johor, Malaysia
| | - Pei Wei Chua
- Global Public Health. Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
- South East Asia Community Observatory (SEACO), Monash University Malaysia, Segamat, Johor, Malaysia
| | - Azizah Mat Hussin
- Kampus Cawangan Institute of Medical Science Technology, Universiti Kuala Lumpur, Kuala Lumpur, Wilayah Persekutuan, Malaysia
| | - Yee Chang Soh
- Global Public Health. Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
- South East Asia Community Observatory (SEACO), Monash University Malaysia, Segamat, Johor, Malaysia
| | - Mawada Alawad
- Global Public Health. Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
- South East Asia Community Observatory (SEACO), Monash University Malaysia, Segamat, Johor, Malaysia
| | - Zaid Bin Kassim
- District Health Office, Pejabat Kesihatan Daerah (PKD) Segamat, Segamat, Johor, Malaysia
| | | | - Blossom Stephan
- School of Medicine, University of Nottingham, Nottingham, UK
| | - Pascale Allotey
- Global Public Health. Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
| | - Daniel D Reidpath
- South East Asia Community Observatory (SEACO), Monash University Malaysia, Segamat, Johor, Malaysia
- International Centre for Diarrhoeal Disease Research, ICDDR,B, Dhaka, Bangladesh
| | - Louise Robinson
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Mario Siervo
- School of Life Sciences, University of Nottingham, Nottingham, UK
| |
Collapse
|
37
|
Lin YJ, Cheng CJ, Chen JW, Lin Z. Incorporating Exogenous and Endogenous Exposures into Dietary Risk Assessment of Nitrates and Nitrites in Vegetables: A Probabilistic Integrated Toxicokinetic Modeling Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1079-1090. [PMID: 31885263 DOI: 10.1021/acs.jafc.9b06720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study aimed to estimate the dietary risk of nitrates and nitrites in vegetables based on internal dose in a probabilistic manner by integrating exogenous exposure based on measured concentrations in vegetables with endogenous exposure using a toxicokinetic (TK) model. We optimized and validated a previous TK model and incorporated Monte Carlo simulations to account for variability across different age populations for predicting internal dose. High levels of nitrates were detected in leafy vegetables (from 545 ± 274 to 1641 ± 873 mg/kg). Nitrite contents of vegetables were generally low (from 1.26 ± 1.40 to 8.20 ± 14.1 mg/kg). The dietary risk was found to be different based on internal versus external dose, suggesting that it is critical to include endogenous nitrite formation into risk assessment. Nitrate and nitrite exposure from vegetables is unlikely to result in appreciable risks for most populations but may be a potential risk for preschoolers.
Collapse
Affiliation(s)
- Yi-Jun Lin
- Institute of Food Safety and Health Risk Assessment , National Yang-Ming University , Taipei 11221 , Taiwan
- Institute of Computational Comparative Medicine (ICCM), Department of Anatomy and Physiology, College of Veterinary Medicine , Kansas State University , 1800 Denison Avenue, P200 Mosier Hall , Manhattan , Kansas 66506 , United States
| | - Cheng-Jih Cheng
- Institute of Food Safety and Health Risk Assessment , National Yang-Ming University , Taipei 11221 , Taiwan
| | - Jein-Wen Chen
- Super Micro Mass Research & Technology Center , Cheng Shiu University , Kaohsiung 83347 , Taiwan
| | - Zhoumeng Lin
- Institute of Computational Comparative Medicine (ICCM), Department of Anatomy and Physiology, College of Veterinary Medicine , Kansas State University , 1800 Denison Avenue, P200 Mosier Hall , Manhattan , Kansas 66506 , United States
| |
Collapse
|
38
|
Bommireddy N, Palathedath SK. Templated bimetallic copper-silver nanostructures on pencil graphite for amperometric detection of nitrate for aquatic monitoring. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113660] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
39
|
Gholami F, Rahmani L, Amirnezhad F, Cheraghi K. High doses of sodium nitrate prior to exhaustive exercise increases plasma peroxynitrite levels in well-trained subjects: randomized, double-blinded, crossover study. Appl Physiol Nutr Metab 2019; 44:1305-1310. [DOI: 10.1139/apnm-2018-0816] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The aim of this study was to investigate the effect of different doses of pre-workout sodium nitrate supplementation on nitric oxide, peroxynitrite levels, and performance parameters. Ten well-trained male subjects participated in a randomized, double-blinded, crossover study. They ingested 8, 16, and 24 mmol sodium nitrate or placebo (NaCl) dissolved in water at 2.5 h before an incremental exercise test. Respiratory gases (oxygen consumption, carbon dioxide production, respiratory exchange ratio) were measured throughout the exercise trials and 3 blood samples (pre-ingestion, 2.5 h post-ingestion and postexercise) were taken to analyze nitrate/nitrite (NOx) and peroxynitrite levels. Data were analyzed using repeated-measures ANOVA at significance level of P < 0.05. NOx levels significantly increased following sodium nitrate ingestion compared with placebo (placebo: 40.86 ± 10.7 μmol/L, 8 mmol: 203.69 ± 25.1 μmol/L, 16 mmol: 289.41 ± 30.1 μmol/L, and 24 mmol: 300.95 ± 42.4 μmol/L, respectively) (P = 0.0001). However, this did not induce any significant change in oxygen consumption (P = 0.351), blood lactate concentration (P = 0.245), and time-to-exhaustion (P = 0.147). Peroxynitrite levels were similar compared with placebo when participants ingested 8 and 16 mmol of inorganic nitrate but a significant increase was observed after exercise at maximal intensity when participants were supplemented with 24 mmol (mean = 14.60 ± 1.3 μmol/L, P = 0.001). Pre-workout ingestion of high dose of sodium nitrate (24 mmol) induced peroxynitrate formation, a marker of oxidative stress. Caution must be taken regarding administration of higher doses before benefits or adverse effects are established in this population.
Collapse
Affiliation(s)
- Farhad Gholami
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
| | - Leila Rahmani
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
| | - Fatemeh Amirnezhad
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
| | - Khadijeh Cheraghi
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
- Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
| |
Collapse
|
40
|
Shannon OM, Grisotto G, Babateen A, McGrattan A, Brandt K, Mathers JC, Siervo M. Knowledge and beliefs about dietary inorganic nitrate among UK-based nutrition professionals: Development and application of the KINDS online questionnaire. BMJ Open 2019; 9:e030719. [PMID: 31676652 PMCID: PMC6830619 DOI: 10.1136/bmjopen-2019-030719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/29/2019] [Accepted: 09/06/2019] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES To examine knowledge and beliefs about the biological roles of dietary inorganic nitrate in UK-based nutrition professionals, and to explore potential differences by participants' education level. SETTING An online questionnaire was administered to UK-based nutrition professionals, exploring knowledge and/or beliefs across five areas: (1) health and performance effects of nitrate; (2) current and recommended intake values for nitrate; (3) dietary sources of nitrate; (4) methods of evaluating nitrate intake and (5) nitrate metabolism. PARTICIPANTS One hundred and twenty-five nutrition professionals. PRIMARY OUTCOME Knowledge and beliefs about inorganic nitrate. RESULTS Most nutrition professionals taking part in the survey had previously heard of inorganic nitrate (71%) and perceived it to be primarily beneficial (51%). The majority believed that nitrate consumption can improve sports performance (59%) and reduce blood pressure (54%), but were unsure about effects on cognitive function (71%), kidney function (80%) and cancer risk (70%). Knowledge of dietary sources of nitrate and factors affecting its content in food were generally good (41%-79% of participants providing correct answers). However, most participants were unsure of the average population intake (65%) and the acceptable daily intake (64%) of nitrate. Most participants (65%) recognised at least one compound (ie, nitric oxide or nitrosamines) that is derived from dietary nitrate in the body. Knowledge of nitrate, quantified by a 23-point index created by summing correct responses, was greater in individuals with a PhD (p=0.01; median (IQR)=13 (9-17)) and tended to be better in respondents with a masters degree (p=0.054; 13 (8-15)) compared with undergraduate-level qualifications (10 (2-14)). CONCLUSIONS UK-based nutrition professionals demonstrated mixed knowledge about the physiology of dietary nitrate, which was better in participants with higher education. More efficient dissemination of current knowledge about inorganic nitrate and its effects on health to nutrition professionals will support them to make more informed recommendations about consumption of this compound.
Collapse
Affiliation(s)
- Oliver M Shannon
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Giorgia Grisotto
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Abrar Babateen
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Andrea McGrattan
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Kirsten Brandt
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - John C Mathers
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Mario Siervo
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
- School of Life Sciences, The University of Nottingham Medical School, University of Nottingham, Nottingham, UK
| |
Collapse
|
41
|
Ashworth A, Cutler C, Farnham G, Liddle L, Burleigh M, Rodiles A, Sillitti C, Kiernan M, Moore M, Hickson M, Easton C, Bescos R. Dietary intake of inorganic nitrate in vegetarians and omnivores and its impact on blood pressure, resting metabolic rate and the oral microbiome. Free Radic Biol Med 2019; 138:63-72. [PMID: 31082507 DOI: 10.1016/j.freeradbiomed.2019.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/30/2019] [Accepted: 05/07/2019] [Indexed: 12/13/2022]
Abstract
Vegetarian diets are commonly associated with lower blood pressure levels. This has been related to greater consumption of inorganic nitrate, since vegetables are the main source of this anion. Dietary nitrate is reduced to nitrite by commensal bacteria in the mouth, which in turn leads to increased circulatory nitrite availability. Nitrite can form nitric oxide by several pathways promoting a reduction in the vascular tone and lower blood pressure. This study tested whether vegetarians have higher concentrations of nitrite in saliva and plasma, and lower blood pressure and resting metabolic rate (RMR), due to higher intakes of nitrate, compared to omnivores. Following a non-randomized, cross-over and single-blinded design we measured dietary nitrate intake, blood pressure and RMR in young and healthy vegetarians (n = 22) and omnivores (n = 19) with similar characteristics after using placebo or antibacterial mouthwash for a week to inhibit oral bacteria. Additionally, we analyzed salivary and plasma nitrate and nitrite concentrations, as well as the oral nitrate-reduction rate and oral microbiome in both groups. Dietary nitrate intake in vegetarians (97 ± 79 mg/day) was not statistically different (P > 0.05) to omnivores (78 ± 47 mg/day). Salivary and plasma nitrate and nitrite concentrations were similar after placebo mouthwash in both groups (P > 0.05). The oral nitrate-reducing capacity, abundance of oral bacterial species, blood pressure and RMR were also similar between vegetarians and omnivores (P > 0.05). Antibacterial mouthwash significantly decreased abundance of oral nitrate-reducing bacterial species in vegetarians (_16.9%; P < 0.001) and omnivores (_17.4%; P < 0.001), which in turn led to a significant reduction of the oral nitrate-reducing capacity in vegetarians (-78%; P < 0.001) and omnivores (-85%; P < 0.001). However, this did not lead to a significant increase in blood pressure and RMR in either groups (P > 0.05). These findings suggest that vegetarian diets may not alter nitrate and nitrite homeostasis, or the oral microbiome, compared to an omnivore diet. Additionally, inhibition of oral nitrite synthesis for a week with antibacterial mouthwash did not cause a significant raise in blood pressure and RMR in healthy, young individuals independent of diet.
Collapse
Affiliation(s)
- Ann Ashworth
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Craig Cutler
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Garry Farnham
- Peninsula Medical School, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Luke Liddle
- School of Social Sciences, Bishop Grosseteste University, Lincolnshire, LN1 3DY, UK; Institute for Clinical Exercise and Health Science, University of the West of Scotland, South Lanarkshire, G72 0LH, UK
| | - Mia Burleigh
- Institute for Clinical Exercise and Health Science, University of the West of Scotland, South Lanarkshire, G72 0LH, UK
| | - Ana Rodiles
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Carla Sillitti
- CNR-Institute for Agricultural and Forest Systems in the Mediterranean, Catania, 95128, Italy
| | - Michele Kiernan
- Peninsula Medical School, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Melanie Moore
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Mary Hickson
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, UK
| | - Chris Easton
- Institute for Clinical Exercise and Health Science, University of the West of Scotland, South Lanarkshire, G72 0LH, UK
| | - Raul Bescos
- Institute of Health & Community, University of Plymouth, Plymouth, PL4 8AA, UK.
| |
Collapse
|
42
|
Thomas B, Smallwood S, Cutler C, Bescos R. The oral nitrate-reducing capacity correlates with peak power output and peak oxygen uptake in healthy humans. Nitric Oxide 2019; 87:43-51. [PMID: 30853629 DOI: 10.1016/j.niox.2019.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/31/2019] [Accepted: 03/04/2019] [Indexed: 12/14/2022]
Abstract
Interest in inorganic nitrate and nitrite has grown substantially over the past decade as research has revealed the role of these anions in enhancing nitric oxide (NO) availability through an oral pathway. Nitrite synthesis in the mouth seems to be an important mechanism to feed the circulatory system with this anion. This is interesting since greater plasma nitrite concentration has been associated with better fitness levels in humans, but this question has not been investigated in relation to salivary nitrite concentration. Additionally, no previous study has investigated the oral nitrate-reducing capacity in regards to peak oxygen uptake (VO2peak) or peak power output (Wpeak) in humans. Thus, the main goal of this study was to investigate whether salivary nitrite and nitrate concentration and the oral nitrate-reducing capacity were associated with VO2peak and Wpeak in healthy humans. Fifty individuals (22 females and 28 males; 38.8 ± 14.3 years/old; BMI = 22.8 ± 3.9) performed a graded exercise test on a cycle ergometer to assess their VO2peak and Wpeak. Unstimulated salivary samples were taken before and 20 min after exercise to measure nitrate/nitrite, pH and lactate. The oral nitrate-reducing capacity was also assessed in 25 subjects before and after exercise. Oral nitrate-reducing capacity was positively associated with Wpeak (rs = 0.64; P = 0.001) and the VO2peak (rs = 0.54; P = 0.005). Similar correlations were found when these variables were analysed after exercise. In addition, a significant decrease in salivary pH (pre: 7.28 ± 0.361; post-exercise: 7.16 ± 0.33; P = 0.003) accompanied by an increase of salivary lactate (pre: 0.17 ± 0.14 mmol/L; post-exercise: 0.48 ± 0.38; P < 0.001) was found after exercise. However, these changes did not have any impact on salivary nitrate/nitrite concentration and the oral nitrate-reducing capacity after exercise. In conclusion, this is the first evidence showing a link between the oral nitrate-reducing capacity and markers of aerobic fitness levels in healthy humans.
Collapse
Affiliation(s)
- B Thomas
- School of Health Professions, Faculty of Health & Human Sciences, University of Plymouth, UK
| | - S Smallwood
- School of Health Professions, Faculty of Health & Human Sciences, University of Plymouth, UK
| | - C Cutler
- School of Health Professions, Faculty of Health & Human Sciences, University of Plymouth, UK
| | - R Bescos
- School of Health Professions, Faculty of Health & Human Sciences, University of Plymouth, UK; Institute of Health & Community, University of Plymouth, UK.
| |
Collapse
|