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Krenek AM, Mathews A, Guo J, Courville AB, Pepine CJ, Chung ST, Aggarwal M. Recipe for Heart Health: A Randomized Crossover Trial on Cardiometabolic Effects of Extra Virgin Olive Oil Within a Whole-Food Plant-Based Vegan Diet. J Am Heart Assoc 2024; 13:e035034. [PMID: 39045758 DOI: 10.1161/jaha.124.035034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/24/2024] [Indexed: 07/25/2024]
Abstract
BACKGROUND Whole-food, plant-based vegan diets, low in oils, and Mediterranean diets, rich in extra virgin olive oil (EVOO), reduce cardiovascular disease risk factors. Optimal quantity of dietary fat, particularly EVOO, is unclear. METHODS AND RESULTS In a randomized crossover trial with weekly cooking classes, adults with ≥5% cardiovascular disease risk followed a high (4 tablespoons/day) to low (<1 teaspoon/day) or low to high EVOO whole-food, plant-based diet for 4 weeks each, separated by a 1-week washout. The primary outcome was difference in low-density lipoprotein cholesterol (LDL-C) from baseline. Secondary measures were changes in additional cardiometabolic markers. Linear mixed models assessed changes from baseline between phases, with age, sex, and body weight change as covariates. In 40 participants, fat intake comprised 48% and 32% of energy during high and low EVOO phases, respectively. Both diets resulted in comparable reductions in LDL-C, total cholesterol, apolipoprotein B, high-density lipoprotein cholesterol, glucose, and high-sensitivity C-reactive protein (all P<0.05). With diet-sequence interactions for LDL-C, differences were detected between diets by diet order (mean±SEM high to low: Δ-12.7[5.9] mg/dL, P=0.04 versus low to high: Δ+15.8[6.8] mg/dL, P=0.02). Similarly, low to high order led to increased glucose, total cholesterol, and high-density lipoprotein cholesterol (all P<0.05). Over period 1, LDL-C reductions were -25.5(5.1) post-low versus -16.7(4.2) mg/dL post-high EVOO, P=0.162, which diminished over period 2. CONCLUSIONS Both plant-based diet patterns improved cardiometabolic risk profiles compared with baseline diets, with more pronounced decreases in LDL-C after the low EVOO diet. Addition of EVOO after following a low intake pattern may impede further lipid reductions. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT04828447.
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Affiliation(s)
- Andrea M Krenek
- Food Science and Human Nutrition Department University of Florida Gainesville FL USA
- National Institute of Diabetes and Digestive and Kidney Diseases National Institutes of Health Bethesda MD USA
| | - Anne Mathews
- Food Science and Human Nutrition Department University of Florida Gainesville FL USA
| | - Juen Guo
- National Institute of Diabetes and Digestive and Kidney Diseases National Institutes of Health Bethesda MD USA
| | - Amber B Courville
- National Institute of Diabetes and Digestive and Kidney Diseases National Institutes of Health Bethesda MD USA
| | - Carl J Pepine
- Division of Cardiology University of Florida Gainesville FL USA
| | - Stephanie T Chung
- National Institute of Diabetes and Digestive and Kidney Diseases National Institutes of Health Bethesda MD USA
| | - Monica Aggarwal
- Division of Cardiology University of Florida Gainesville FL USA
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Fraga SRO, Zago L, Curioni CC. Olive Oil Consumption, Risk Factors, and Diseases: An Umbrella Review. Nutr Rev 2024:nuae091. [PMID: 39001794 DOI: 10.1093/nutrit/nuae091] [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] [Indexed: 07/15/2024] Open
Abstract
CONTEXT Olive oil is a vegetable oil that provides health benefits, including a reduction in free radicals and total cholesterol and prevention of chronic diseases. The escalating incidence of chronic diseases presents a substantial challenge to public health, prompting numerous studies to assess these health-related effects. Despite several systematic reviews and meta-analyses summarizing the association between olive oil consumption and specific health outcomes, there is no summary of the accumulated evidence from these reviews. OBJECTIVE This umbrella review summarizes the evidence on olive oil consumption or intervention in adults and its association with multiple risk factors and diseases. DATA SOURCES We retrieved systematic reviews of randomized trials or observational studies on oral interventions or the consumption of olive oil. The systematic search encompassed databases including MEDLINE, Embase, Scopus, Web of Science, LILACS, and CENTRAL from inception to February 6, 2023. DATA EXTRACTION Two independent reviewers conducted data extraction and assessed methodological quality using the Joanna Briggs Institute tool. DATA ANALYSIS Overall, 17 systematic reviews of randomized trials and observational studies, covering outcomes such as cardiovascular diseases, cancer, type 2 diabetes, glucose metabolism, inflammatory and oxidative markers, and all-cause mortality, were included. The evidence suggests a beneficial association between olive oil consumption and cardiovascular diseases, cancer, type 2 diabetes, and all-cause mortality. However, the evidence was less definitive for inflammatory markers, oxidative stress, glucose metabolism, and blood lipid outcomes. Several meta-analyses revealed high heterogeneity and wide confidence intervals, along with a limited number of randomized clinical trials. CONCLUSION Given the high heterogeneity and low quality of evidence, further studies involving randomized trials are imperative. Prioritizing an in-depth analysis of specific olive oil components and using a control group with distinct characteristics and different effects is strongly recommended. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42022357290.
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Affiliation(s)
- Shyrlei R O Fraga
- Postgraduate Program in Food, Nutrition, and Health, Nutrition Institute, State University of Rio de Janeiro, Rio de Janeiro, RJ 20550-170, Brazil
| | - Lilia Zago
- Department of Basic and Experimental Nutrition, Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ 20550-170, Brazil
| | - Cintia C Curioni
- Department of Social Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ 20550-170, Brazil
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3
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Macaluso M, Mercanti N, Pieracci Y, Mangia R, Verdini PG, Zinnai A. Unconventional Extraction and Storage Strategies in Order to Enhance the Shelf Life of Virgin Olive Oil. Foods 2024; 13:2088. [PMID: 38998593 PMCID: PMC11241700 DOI: 10.3390/foods13132088] [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: 05/21/2024] [Revised: 06/19/2024] [Accepted: 06/28/2024] [Indexed: 07/14/2024] Open
Abstract
Virgin olive oil (VOO) is a globally esteemed product renowned for its chemical composition, nutritional value, and health benefits. Consumers seeking natural, nutritious, and healthy foods increasingly favor VOO. The optimization of the extraction system ensures the production of high-quality VOO with abundant antioxidant compounds that naturally protect it from degradation. Proper storage is crucial in maintaining the quality of VOO, prompting the exploration of novel extraction and preservation techniques. Factors such as light, temperature, and oxygen greatly influence the degradation process, resulting in reduced levels of natural antioxidants like polyphenols. Undesirable by-products and non-aromatic compounds may be formed, making the oil unacceptable over time. On the basis of all this consideration, this study aimed to evaluate the synergic use of two different gases (CO2 and argon) during the malaxation phase to limit radical development and delay lipid autoxidation. Additionally, unconventional preservation systems, namely argon headspace, shellac, and bottle in bag, were assessed over a period of 150 days. The results evidenced that the use of CO2 and argon during the malaxation process resulted in an improvement in the oil quality compared to the one obtained with the traditional system. However, in traditional oils, the alternative packaging systems determined interesting outcomes as they were able to positively affect different parameters, while the packaging effect was more mitigated in the test oils.
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Affiliation(s)
- Monica Macaluso
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy; (M.M.); (N.M.); (R.M.); (A.Z.)
| | - Nicola Mercanti
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy; (M.M.); (N.M.); (R.M.); (A.Z.)
| | - Ylenia Pieracci
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy; (M.M.); (N.M.); (R.M.); (A.Z.)
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Roberto Mangia
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy; (M.M.); (N.M.); (R.M.); (A.Z.)
| | - Piero Giorgio Verdini
- European Organization for Nuclear Research, Espl. des Particules 1, 1211 Meyrin, Switzerland;
| | - Angela Zinnai
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy; (M.M.); (N.M.); (R.M.); (A.Z.)
- Interdepartmental Research Centre “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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4
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Gonçalves M, Vale N, Silva P. Neuroprotective Effects of Olive Oil: A Comprehensive Review of Antioxidant Properties. Antioxidants (Basel) 2024; 13:762. [PMID: 39061831 PMCID: PMC11274152 DOI: 10.3390/antiox13070762] [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: 05/26/2024] [Revised: 06/15/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024] Open
Abstract
Neurodegenerative diseases are a significant challenge to global healthcare, and oxidative stress plays a crucial role in their development. This paper presents a comprehensive analysis of the neuroprotective potential of olive oil, with a primary focus on its antioxidant properties. The chemical composition of olive oil, including key antioxidants, such as oleuropein, hydroxytyrosol, and oleocanthal, is systematically examined. The mechanisms by which these compounds provide neuroprotection, including counteracting oxidative damage and modulating neuroprotective pathways, are explored. The neuroprotective efficacy of olive oil is evaluated by synthesizing findings from various sources, including in vitro studies, animal models, and clinical trials. The integration of olive oil into dietary patterns, particularly its role in the Mediterranean diet, and its broader implications in neurodegenerative disease prevention are also discussed. The challenges in translating preclinical findings to clinical applications are acknowledged and future research directions are proposed to better understand the potential of olive oil in mitigating the risk of neurodegenerative conditions. This review highlights olive oil not only as a dietary component, but also as a promising candidate in preventive neurology, advocating for further investigation in the context of neurodegenerative diseases.
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Affiliation(s)
- Marta Gonçalves
- Laboratory of Histology and Embryology, Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (U.Porto), Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal;
| | - Nuno Vale
- PerMed Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal;
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
| | - Paula Silva
- Laboratory of Histology and Embryology, Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (U.Porto), Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal;
- iNOVA Media Lab, ICNOVA-NOVA Institute of Communication, NOVA School of Social Sciences and Humanities, Universidade NOVA de Lisboa, 1069-061 Lisbon, Portugal
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5
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Rosqvist F, Niinistö S. Fats and oils - a scoping review for Nordic Nutrition Recommendations 2023. Food Nutr Res 2024; 68:10487. [PMID: 38370114 PMCID: PMC10870979 DOI: 10.29219/fnr.v68.10487] [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: 03/08/2022] [Revised: 06/10/2022] [Accepted: 01/03/2024] [Indexed: 02/20/2024] Open
Abstract
This scoping review for the Nordic Nutrition Recommendations 2023 summarizes the available evidence on fats and oils from a food level perspective. A literature search for systematic reviews (SRs) and meta-analyses was conducted in PubMed. There are few SRs and meta-analyses available that investigate the association between fats and oils (food level) and health outcomes; the majority report associations at the nutrient level (fatty acid classes). All identified SRs and meta-analyses were of low methodological quality, thus the findings and conclusions presented within this scoping review should be interpreted cautiously. Based on this limited evidence, the following results were indicated: the intake of olive oil may be associated with reduced risk of cardiovascular disease (CVD), type 2 diabetes (T2D), and total mortality in prospective cohort studies. The intake of butter was not associated with the risk of CVD but may be related to slightly lower risk of T2D and higher risk of total mortality in prospective cohort studies. For cancer, the evidence is sparse and primarily based on case-control studies. The intake of olive oil may be associated with reduced risk of cancer, whereas the intake of butter may be associated with increased risk of certain cancer types. Butter increases LDL-cholesterol when compared to virtually all other fats and oils. Palm oil may increase LDL-cholesterol when compared to oils rich in MUFA or PUFA but may not have any effect on glucose or insulin. Coconut oil may increase LDL-cholesterol when compared to other plant oils but may decrease LDL-cholesterol when compared to animal fats rich in SFA. Canola/rapeseed oil may decrease LDL-cholesterol compared to olive oil, sunflower oil and sources of SFA and may also reduce body weight compared to other oils. Olive oil may decrease some inflammation markers but may not have a differential effect on LDL-cholesterol compared to other fats and oils. The effect on risk markers likely differs depending on the type/version of oil, for example, due to the presence of polyphenols, phytosterols and other minor components. Taken together, based on the available evidence, oils rich in unsaturated fat (e.g. olive oil, canola oil) are to be preferred over oils and fats rich in saturated fat (e.g. butter, tropical oils).
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Affiliation(s)
- Fredrik Rosqvist
- Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Uppsala, Sweden
| | - Sari Niinistö
- Finnish Institute for Health and Welfare, Helsinki, Finland
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García-Gavilán JF, Babio N, Toledo E, Semnani-Azad Z, Razquin C, Dennis C, Deik A, Corella D, Estruch R, Ros E, Fitó M, Arós F, Fiol M, Lapetra J, Lamuela-Raventos R, Clish C, Ruiz-Canela M, Martínez-González MÁ, Hu F, Salas-Salvadó J, Guasch-Ferré M. Olive oil consumption, plasma metabolites, and risk of type 2 diabetes and cardiovascular disease. Cardiovasc Diabetol 2023; 22:340. [PMID: 38093289 PMCID: PMC10720204 DOI: 10.1186/s12933-023-02066-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/14/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Olive oil consumption has been inversely associated with the risk of type 2 diabetes (T2D) and cardiovascular disease (CVD). However, the impact of olive oil consumption on plasma metabolites remains poorly understood. This study aims to identify plasma metabolites related to total and specific types of olive oil consumption, and to assess the prospective associations of the identified multi-metabolite profiles with the risk of T2D and CVD. METHODS The discovery population included 1837 participants at high cardiovascular risk from the PREvención con DIeta MEDiterránea (PREDIMED) trial with available metabolomics data at baseline. Olive oil consumption was determined through food-frequency questionnaires (FFQ) and adjusted for total energy. A total of 1522 participants also had available metabolomics data at year 1 and were used as the internal validation sample. Plasma metabolomics analyses were performed using LC-MS. Cross-sectional associations between 385 known candidate metabolites and olive oil consumption were assessed using elastic net regression analysis. A 10-cross-validation (CV) procedure was used, and Pearson correlation coefficients were assessed between metabolite-weighted models and FFQ-derived olive oil consumption in each pair of training-validation data sets within the discovery sample. We further estimated the prospective associations of the identified plasma multi-metabolite profile with incident T2D and CVD using multivariable Cox regression models. RESULTS We identified a metabolomic signature for the consumption of total olive oil (with 74 metabolites), VOO (with 78 metabolites), and COO (with 17 metabolites), including several lipids, acylcarnitines, and amino acids. 10-CV Pearson correlation coefficients between total olive oil consumption derived from FFQs and the multi-metabolite profile were 0.40 (95% CI 0.37, 0.44) and 0.27 (95% CI 0.22, 0.31) for the discovery and validation sample, respectively. We identified several overlapping and distinct metabolites according to the type of olive oil consumed. The baseline metabolite profiles of total and extra virgin olive oil were inversely associated with CVD incidence (HR per 1SD: 0.79; 95% CI 0.67, 0.92 for total olive oil and 0.70; 0.59, 0.83 for extra virgin olive oil) after adjustment for confounders. However, no significant associations were observed between these metabolite profiles and T2D incidence. CONCLUSIONS This study reveals a panel of plasma metabolites linked to the consumption of total and specific types of olive oil. The metabolite profiles of total olive oil consumption and extra virgin olive oil were associated with a decreased risk of incident CVD in a high cardiovascular-risk Mediterranean population, though no associations were observed with T2D incidence. TRIAL REGISTRATION The PREDIMED trial was registered at ISRCTN ( http://www.isrctn.com/ , ISRCTN35739639).
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Affiliation(s)
- Jesús F García-Gavilán
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Alimentaciò, Nutrició Desenvolupament i Salut Mental ANUT-DSM, Reus, Spain.
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain.
| | - Nancy Babio
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Alimentaciò, Nutrició Desenvolupament i Salut Mental ANUT-DSM, Reus, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Estefanía Toledo
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IdiSNA, Pamplona, Spain
| | - Zhila Semnani-Azad
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Cristina Razquin
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IdiSNA, Pamplona, Spain
| | | | - Amy Deik
- The Broad Institute of Harvard and MIT, Boston, MA, USA
| | - Dolores Corella
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Ramón Estruch
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Internal Medicine, Institut d'Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clinic, University of Barcelona, Barcelona, Spain
- Institut de Nutrició I Seguretat Alimentària (INSA-UB), Universitat de Barcelona, Barcelona, Spain
| | - Emilio Ros
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Lipid Clinic, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Montserrat Fitó
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Cardiovascular and Nutrition Research Group, Institut de Recerca Hospital del Mar, Barcelona, Spain
| | - Fernando Arós
- Bioaraba Health Research Institute, Osakidetza Basque Health Service, Araba University Hospital, University of the Basque Country UPV/EHU, 01009, Vitoria-Gasteiz, Spain
| | - Miquel Fiol
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Plataforma de Ensayos Clínicos, Instituto de Investigación Sanitaria Illes Balears (IdISBa), Hospital Universitario Son Espases, 07120, Palma, Spain
| | - José Lapetra
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Family Medicine, Research Unit, Distrito Sanitario Atención Primaria Sevilla, Seville, Spain
| | - Rosa Lamuela-Raventos
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Institut de Nutrició I Seguretat Alimentària (INSA-UB), Universitat de Barcelona, Barcelona, Spain
- Polyphenol Research Group, Departament de Nutrició, Ciències de L'Alimentació I Gastronomia, Universitat de Barcelon (UB), Av. de Joan XXII, 27-31, 08028, Barcelona, Spain
| | - Clary Clish
- The Broad Institute of Harvard and MIT, Boston, MA, USA
| | - Miguel Ruiz-Canela
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IdiSNA, Pamplona, Spain
| | - Miguel Ángel Martínez-González
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IdiSNA, Pamplona, Spain
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Frank Hu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Jordi Salas-Salvadó
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Alimentaciò, Nutrició Desenvolupament i Salut Mental ANUT-DSM, Reus, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Marta Guasch-Ferré
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
- Department of Public Health, Section of Epidemiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Øster Farimagsgade 5, 1014, Copenhagen, Denmark.
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Tarabanis C, Long C, Scolaro B, Heffron SP. Reviewing the cardiovascular and other health effects of olive oil: Limitations and future directions of current supplement formulations. Nutr Metab Cardiovasc Dis 2023; 33:2326-2333. [PMID: 37788953 DOI: 10.1016/j.numecd.2023.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 10/05/2023]
Abstract
AIMS We reviewed the literature to date for high-level evidence on the cardiovascular and other health effects of olive oil with a focus on the amount, frequency of use and type of olive oil consumed in prior studies. A total of twelve prospective cohort studies with sample sizes of at least 4000 individuals and one meta-analysis were identified. DATA SYNTHESIS The majority of cohorts followed individuals aged ≥55 years old, free of cardiovascular disease (CVD) at baseline but at high risk, over periods of 4-10 years and with daily consumption amounts of 10-35 g/day. With the exception of the PREDIMED cohort that employed extra virgin olive oil, most remaining studies did not differentiate between different types of olive oil. Taken together, the data suggests an association between greater olive oil consumption and a lower CVD incidence/mortality and stroke risk. We use this information to evaluate the use of commercially available, capsule-based olive oil dietary supplements and suggest future directions. Notably, achieving minimum total daily doses described in the aforementioned studies would be challenging with current market formulations of olive oil supplements dosed at 1-1.25 g/capsule. CONCLUSIONS Outside of mechanistic studies, little progress has been made in determining the olive oil component(s) underlying the observed health effects given the lack of compositional reporting and consistency across large scale human studies. We propose the use of supplements of varying composition, such as varying total phenolic content, in pragmatic trial designs focused on low-cost methodologies to address this question.
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Affiliation(s)
- Constantine Tarabanis
- Leon H. Charney Division of Cardiology, New York University Langone Health, New York University Grossman School of Medicine, New York, NY, USA.
| | - Clarine Long
- Leon H. Charney Division of Cardiology, New York University Langone Health, New York University Grossman School of Medicine, New York, NY, USA
| | - Bianca Scolaro
- Louisiana State University College of Science, Baton Rouge, LA, USA
| | - Sean P Heffron
- Leon H. Charney Division of Cardiology, New York University Langone Health, New York University Grossman School of Medicine, New York, NY, USA; Center for the Prevention of Cardiovascular Disease, New York University Langone Health, New York University Grossman School of Medicine, New York, NY, USA
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8
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Wang Y, Xia R, Pericic TP, Bekkering GE, Hou L, Bala MM, Gao Y, Wu M, Gloss D, Siemieniuk RA, Fei Y, Rochwerg B, Guyatt G, Brignardello-Petersen R. How do network meta-analyses address intransitivity when assessing certainty of evidence: a systematic survey. BMJ Open 2023; 13:e075212. [PMID: 38035750 PMCID: PMC10689416 DOI: 10.1136/bmjopen-2023-075212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
OBJECTIVES To describe how systematic reviews with network meta-analyses (NMAs) that used the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) NMA approach addressed intransitivity when assessing certainty of evidence. DESIGN Systematic survey. DATA SOURCES Medline, Embase and Cochrane Database of Systematic Reviews from September 2014 to October 2022. ELIGIBILITY CRITERIA Systematic reviews of randomised controlled trials with aggregate data NMAs that used the GRADE NMA approach for assessing certainty of evidence. DATA EXTRACTION AND SYNTHESIS We documented how reviewers described methods for addressing intransitivity when assessing certainty of evidence, how often they rated down for intransitivity and their explanations for rating down. RESULTS Of the 268 eligible systematic reviews, 44.8% (120/268) mentioned intransitivity when describing methods for assessing the certainty of evidence. Of these, 28.3% (34/120) considered effect modifiers and from this subset, 67.6% (23/34) specified the effect modifiers; however, no systematic review noted how they chose the effect modifiers. 15.0% (18/120) mentioned looking for differences between the direct comparisons that inform the indirect estimate. No review specified a threshold for difference in effect modifiers between the direct comparisons that would lead to rating down for intransitivity. Reviewers noted rating down indirect evidence for intransitivity in 33.1% of systematic reviews, and noted intransitivity for network estimates in 23.0% of reviews. Authors provided an explanation for rating down for intransitivity in 59.6% (31/52) of the cases in which they rated down. Of the 31 in which they provided an explanation, 74.2% (23/31) noted they detected differences in effect modifiers and 67.7% (21/31) specified in what effect modifiers they detected differences. CONCLUSIONS A third of systematic reviews with NMAs using the GRADE approach rated down for intransitivity. Limitations in reporting of methods to address intransitivity proved considerable. Whether the problem is that reviewers neglected to address rating down for transitivity at all, or whether they did consider but not report, is not clear. At minimum systematic reviews with NMAs need to improve their reporting practices regarding intransitivity; it may well be that they need to improve their practice in transitivity assessment. How to best address intransitivity may remain unclear for many reviewers thus additional GRADE guidance providing practical instructions for addressing intransitivity may be desirable.
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Affiliation(s)
- Ying Wang
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Ruyu Xia
- Centre for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | | | | | - Liangying Hou
- Evidence Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, People's Republic of China
| | - Malgorzata M Bala
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College, Cracow, Poland
| | - Ya Gao
- Evidence Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, People's Republic of China
| | - Michael Wu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - David Gloss
- Charleston Area Medical Center, Charleston, West Virginia, USA
| | - Reed Alexander Siemieniuk
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Yutong Fei
- Centre for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Bram Rochwerg
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Gordon Guyatt
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
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9
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Almanza-Aguilera E, Cano A, Gil-Lespinard M, Burguera N, Zamora-Ros R, Agudo A, Farràs M. Mediterranean diet and olive oil, microbiota, and obesity-related cancers. From mechanisms to prevention. Semin Cancer Biol 2023; 95:103-119. [PMID: 37543179 DOI: 10.1016/j.semcancer.2023.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 07/02/2023] [Accepted: 08/01/2023] [Indexed: 08/07/2023]
Abstract
Olive oil (OO) is the main source of added fat in the Mediterranean diet (MD). It is a mix of bioactive compounds, including monounsaturated fatty acids, phytosterols, simple phenols, secoiridoids, flavonoids, and terpenoids. There is a growing body of evidence that MD and OO improve obesity-related factors. In addition, obesity has been associated with an increased risk for several cancers: endometrial, oesophageal adenocarcinoma, renal, pancreatic, hepatocellular, gastric cardia, meningioma, multiple myeloma, colorectal, postmenopausal breast, ovarian, gallbladder, and thyroid cancer. However, the epidemiological evidence linking MD and OO with these obesity-related cancers, and their potential mechanisms of action, especially those involving the gut microbiota, are not clearly described or understood. The goals of this review are 1) to update the current epidemiological knowledge on the associations between MD and OO consumption and obesity-related cancers, 2) to identify the gut microbiota mechanisms involved in obesity-related cancers, and 3) to report the effects of MD and OO on these mechanisms.
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Affiliation(s)
- Enrique Almanza-Aguilera
- Unit of Nutrition and Cancer, Epidemiology Research Program, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain
| | - Ainara Cano
- Food Research, AZTI, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160, Derio, Spain
| | - Mercedes Gil-Lespinard
- Unit of Nutrition and Cancer, Epidemiology Research Program, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain
| | - Nerea Burguera
- Food Research, AZTI, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160, Derio, Spain
| | - Raul Zamora-Ros
- Unit of Nutrition and Cancer, Epidemiology Research Program, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain; Department of Nutrition, Food Sciences, and Gastronomy, Food Innovation Network (XIA), Institute for Research on Nutrition and Food Safety (INSA), Faculty of Pharmacy and Food Sciences University of Barcelona, Barcelona, Spain.
| | - Antonio Agudo
- Unit of Nutrition and Cancer, Epidemiology Research Program, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain
| | - Marta Farràs
- Unit of Nutrition and Cancer, Epidemiology Research Program, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet de Llobregat, Spain.
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Isaakidis A, Maghariki JE, Carvalho-Barros S, Gomes AM, Correia M. Is There More to Olive Oil than Healthy Lipids? Nutrients 2023; 15:3625. [PMID: 37630815 PMCID: PMC10459315 DOI: 10.3390/nu15163625] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/21/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
The Mediterranean diet is a healthy dietary pattern whose main characteristic is olive oil consumption. The potential health benefits of olive oil have been extensively investigated and the present review provides the more recent clinical evidence supporting the positive impact of olive oil intake on human health. PubMed (n = 227) and Scopus (n = 308) databases were searched for published clinical studies in English over the past six years (October 2016 to December 2022), following key word searches of "olive oil" and "health". Major findings associated olive oil with antioxidant and anti-inflammatory effects, improvement in endothelial function and lipid profile, prevention of obesity, diabetes, cardiovascular and neurodegenerative diseases, and modulation of the gut microbiota. These benefits are attributed to the nutritional composition of olive oil, which has a high content of monounsaturated fatty acids (MUFA) (oleic acid in particular) and minor compounds such as polyphenols (oleuropein and hydroxytyrosol). Although additional research continues to be required, the more recently generated evidence supports the potential of olive oil to contribute beneficially to health and to the prevention and management of a variety of non-communicable diseases, as a consequence of the synergism between its components' complexity.
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Affiliation(s)
- Akritas Isaakidis
- Centro de Biotecnologia e Química Fina (CBQF)-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (J.E.M.); (M.C.)
- Department of Nutritional Sciences and Dietetics, International Hellenic University of Thessaloniki, Sindos, 57400 Thessaloniki, Greece
| | - Jane El Maghariki
- Centro de Biotecnologia e Química Fina (CBQF)-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (J.E.M.); (M.C.)
| | - Sérgio Carvalho-Barros
- Centro de Biotecnologia e Química Fina (CBQF)-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (J.E.M.); (M.C.)
| | - Ana Maria Gomes
- Centro de Biotecnologia e Química Fina (CBQF)-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (J.E.M.); (M.C.)
| | - Marta Correia
- Centro de Biotecnologia e Química Fina (CBQF)-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal (J.E.M.); (M.C.)
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11
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Correia M, Moreira I, El Maghariki J, Manuel T, Alves P, Barros R, Gomes A. The Metabolic and Analytical Changes of Healthy Volunteers upon Intake of Portuguese Extra Virgin Olive Oil: A Comparison Study between Pre- and Post-Intervention. Nutrients 2023; 15:3351. [PMID: 37571288 PMCID: PMC10421349 DOI: 10.3390/nu15153351] [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: 06/30/2023] [Revised: 07/17/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
(1) Background: Extra virgin olive oil (EVOO) is studied mostly for its health benefits in preventing non-communicable chronic diseases, particularly within a Mediterranean dietary pattern. However, few studies have addressed the effect of EVOO in healthy individuals, prior to an established disease. This study aims to evaluate the impact of Northern Portuguese polyphenol-rich EVOO (NPPR-EVOO) consumption on various important clinical parameters in healthy adult volunteers. (2) Methods: This quasi-experimental intervention study assessed the impact of NPPR-EVOO for a period of 100 days. Serum total cholesterol, HbA1c, HDL-c, LDL-c, and CRP, and anthropometric measures-waist and hip perimeters, hand grip strength, and body fat-were assessed and food logs were analyzed. (3) Results: Serum HbA1c (5.12 ± 0.32%; 4.93 ± 0.24, p = 0.000) and LDL-c (96.50 ± 28.57 mg/dL; 87.41 ± 31.38 mg/dL, p = 0.017) significantly decreased following NPPR-EVOO. Also, daily energy significantly increased, but no changes in other dietary parameters, or anthropometry, were seen. Adherence to the Mediterranean diet did not explain the differences found in individuals regarding serum lipid profile and HbA1c, reinforcing the role of EVOO's effect. (4) Conclusions: NPPR-EVOO lowered the serum levels of LDL cholesterol and HbA1c, providing clues on the effect of EVOO-putative health benefits. These results pave the way for a deeper exploration of EVOO as a functional food.
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Affiliation(s)
- Marta Correia
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (I.M.); (J.E.M.); (A.G.)
| | - Inês Moreira
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (I.M.); (J.E.M.); (A.G.)
| | - Jane El Maghariki
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (I.M.); (J.E.M.); (A.G.)
| | - Tânia Manuel
- Centro de Investigação Interdisciplinar em Saúde—Instituto de Ciências da Saúde, Universidade Católica Portuguesa, 4169-005 Porto, Portugal
| | - Paulo Alves
- Centro de Investigação Interdisciplinar em Saúde—Instituto de Ciências da Saúde, Universidade Católica Portuguesa, 4169-005 Porto, Portugal
| | - Rui Barros
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (I.M.); (J.E.M.); (A.G.)
| | - Ana Gomes
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal; (I.M.); (J.E.M.); (A.G.)
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García-González A, Quintero-Flórez A, Ruiz-Méndez MV, Perona JS. Virgin Olive Oil Ranks First in a New Nutritional Quality Score Due to Its Compositional Profile. Nutrients 2023; 15:2127. [PMID: 37432257 DOI: 10.3390/nu15092127] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 04/21/2023] [Accepted: 04/26/2023] [Indexed: 07/12/2023] Open
Abstract
Dietary oils play a crucial role in maintaining a healthy diet. However, with the increasing number of oils available, it became a challenging task for food producers and consumers to select the best oil for their needs. In this work, an easy-to-understand nutrition quality score was created, using a model that included beneficial lipid compounds criteria according to the dietary recommendations published by international food and health organizations. The algorithm assigned points for each component of the model considering their content in each particular oil. The points were added up and the fats and oils were classified by the corresponding percentile. As a result, among the 32 edible oils that were evaluated, virgin olive oil ranked first with a score of 100. All plant oils, except for margarine and coconut oil, ranked above the 50th percentile. Receiver-operator curves and regression models showed that saturated fatty acids may be able to predict the score, and thus, the nutritional quality of the oils. In conclusion, the proposed nutritional quality score would promote healthy and nutritious food options for consumers and would provide food producers with a valuable tool to select high-quality oils for their products, ensuring that they meet the nutritional requirements.
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Affiliation(s)
- Aída García-González
- Department of Molecular Biology and Biochemical Engineering, University of Pablo de Olavide, 41013 Seville, Spain
- Department of Food and Health, Instituto de la Grasa-CSIC, 41013 Seville, Spain
| | - Angelica Quintero-Flórez
- Department of Preventive Medicine and Public Health, University of Seville, 41009 Seville, Spain
| | | | - Javier S Perona
- Department of Food and Health, Instituto de la Grasa-CSIC, 41013 Seville, Spain
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13
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Liamin M, Lara MP, Michelet O, Rouault M, Quintela JC, Le Bloch J. Olive juice dry extract containing hydroxytyrosol, as a nontoxic and safe substance: Results from pre-clinical studies and review of toxicological studies. Toxicol Rep 2023; 10:245-260. [PMID: 36852231 PMCID: PMC9958074 DOI: 10.1016/j.toxrep.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/31/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023] Open
Abstract
Products derived from olives, such as the raw fruit and oils, are widely consumed due to their taste, and purported nutritional/health benefits. Phenolic compounds, especially hydroxytyrosol (HT), have been proposed as one of the key substances involved in these effects. An olive juice extract, standardized to contain 20% HT ("OE20HT"), was produced to investigate its health benefits. The aim of this study was to demonstrate the genotoxic safety of this ingredient based on in vitro Ames assay and in vitro micronucleus assay. Results indicated that OE20HT was not mutagenic at concentrations of up to 5000 µg/plate, with or without metabolic activation, and was neither aneugenic nor clastogenic after 3-hour exposure at concentrations of up to 60 µg/mL with or without metabolic activation, or after 24-hour exposure at concentrations of up to 40 µg/mL. To further substantiate the safety of OE20HT following ingestion without conducting additional animal studies, a comprehensive literature review was conducted. No safety concerns were identified based on acute or sub-chronic studies in animals, including reproductive and developmental studies. These results were supported by clinical studies demonstrating the absence of adverse effects after oral supplementation with olive extracts or HT. Based on in vitro data and the literature review, the OE20HT extract is therefore considered as safe for human consumption at doses up to 2.5 mg/kg body weight/day.
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Key Words
- 2AA, 2-aminoanthracene
- 9AA, 9-aminoacridine
- CBI, Centre for the Promotion of Imports from developing countries
- CP, cyclophosphamide monohydrate
- EFSA, European Food Safety Authority
- Food product
- Genotoxicity
- HT, hydroxytyrosol
- Hydroxytyrosol
- MF, mutation factor
- MMC, mitomycin C
- MMS, methyl-methanesulfonate
- Mutagenicity
- NDP, 4-nitro-1,2-phenylene-diamine
- NOAEL, no observed adverse effect level
- OE20HT, olive juice dry extract titrated 20% hydroxytyrosol
- OECD, Organization for Economic Co-operation and Development
- Olive fruit extract
- PD, population doubling
- RICC, relative increase in cell count
- RPD, relative population doubling
- SAZ, sodium azide
- Safety
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Affiliation(s)
- Marie Liamin
- Nutraveris, A Food Chain ID Company, 6 rue de la gare, 22000 Saint-Brieuc, France,Corresponding author.
| | - Maria Pilar Lara
- NATAC Biotech S.L., C/ Electrónica 7, 28923 Alcorcón, Madrid, Spain
| | - Olivier Michelet
- Nutraveris, A Food Chain ID Company, 6 rue de la gare, 22000 Saint-Brieuc, France
| | - Marie Rouault
- Nutraveris, A Food Chain ID Company, 6 rue de la gare, 22000 Saint-Brieuc, France
| | | | - Jérôme Le Bloch
- Nutraveris, A Food Chain ID Company, 6 rue de la gare, 22000 Saint-Brieuc, France
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Only virgin type of olive oil consumption reduces the risk of mortality. Results from a Mediterranean population-based cohort. Eur J Clin Nutr 2023; 77:226-234. [PMID: 36241725 PMCID: PMC9908537 DOI: 10.1038/s41430-022-01221-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Evidence on the association between virgin olive oil (OO) and mortality is limited since no attempt has previously been made to discern about main OO varieties. OBJECTIVE We examined the association between OO consumption (differentiating by common and virgin varieties) and total as well as cause-specific long-term mortality METHODS: 12,161 individuals, representative of the Spanish population ≥18 years old, were recruited between 2008 and 2010 and followed up through 2019. Habitual food consumption was collected at baseline with a validated computerized dietary history. The association between tertiles of OO main varieties and all-cause, cardiovascular and cancer mortality were analyzed using Cox models. RESULTS After a mean follow-up of 10.7 years (129,272 person-years), 143 cardiovascular deaths, and 146 cancer deaths occurred. The hazard ratio (HR) (95% confidence interval) for all-cause mortality in the highest tertile of common and virgin OO consumption were 0.96 (0.75-1.23; P-trend 0.891) and 0.66 (0.49-0.90; P-trend 0.040). The HR for all-cause mortality per a 10 g/day increase in virgin OO was 0.91 (0.83-1.00). Virgin OO consumption was also inversely associated with cardiovascular mortality, with a HR of 0.43 (0.20-0.91; P-trend 0.017), but common OO was not, with a HR of 0.88 (0.49-1.60; P-trend 0.242). No variety of OO was associated with cancer mortality. CONCLUSION Daily moderate consumption of virgin OO (1 and 1/2 tablespoons) was associated with a one-third lower risk of all-cause as well as half the risk of cardiovascular mortality. These effects were not seen for common OO. These findings may be useful to reappraise dietary guidelines.
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15
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Olive Oil in the Mediterranean Diet and Its Biochemical and Molecular Effects on Cardiovascular Health through an Analysis of Genetics and Epigenetics. Int J Mol Sci 2022; 23:ijms232416002. [PMID: 36555645 PMCID: PMC9782563 DOI: 10.3390/ijms232416002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/27/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Human nutrition is a relatively new science based on biochemistry and the effects of food constituents. Ancient medicine considered many foods as remedies for physical performance or the treatment of diseases and, since ancient times, especially Greek, Asian and pre-Christian cultures similarly thought that they had beneficial effects on health, while others believed some foods were capable of causing illness. Hippocrates described the food as a form of medicine and stated that a balanced diet could help individuals stay healthy. Understanding molecular nutrition, the interaction between nutrients and DNA, and obtaining specific biomarkers could help formulate a diet in which food is not only a food but also a drug. Therefore, this study aims to analyze the role of the Mediterranean diet and olive oil on cardiovascular risk and to identify their influence from the genetic and epigenetic point of view to understand their possible protective effects.
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Martínez-González MA, Sayón-Orea C, Bullón-Vela V, Bes-Rastrollo M, Rodríguez-Artalejo F, Yusta-Boyo MJ, García-Solano M. Effect of olive oil consumption on cardiovascular disease, cancer, type 2 diabetes, and all-cause mortality: A systematic review and meta-analysis. Clin Nutr 2022; 41:2659-2682. [PMID: 36343558 DOI: 10.1016/j.clnu.2022.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/10/2022] [Accepted: 10/07/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND Some large prospective studies on olive oil consumption and risk of chronic disease suggested protective effects. OBJECTIVE We conducted an outcome-wide systematic review and meta-analysis of prospective cohort studies and randomized controlled trials (RCT) assessing the association between olive oil consumption and the primary risk of 4 different outcomes: cardiovascular disease (CVD), cancer, type 2 diabetes (T2D) or all-cause mortality through January 2022. METHODS Thirty-six studies were included in the systematic review and twenty-seven studies (24 prospective cohorts and 3 different reports from one RCT) were assessed in 4 quantitative random-effects meta-analyses. They included a total of 806,203 participants with 49,223 CVD events; 1,285,064 participants with 58,892 incident cases of cancer; 680,239 participants with 13,389 incident cases of T2D; and 733,420 participants with 174,081 deaths. Olive oil consumption was most frequently measured with validated food frequency questionnaires. Studies follow-up ranged between 3.7 and 28 years. RESULTS A 16% reduced risk of CVD (relative risk [RR]: 0.84; 95% confidence interval [CI]: 0.76 to 0.94), standardized for every additional olive oil consumption of 25 g/d was found. No significant association with cancer risk was observed (RR: 0.94; 95% CI: 0.86 to 1.03, per 25 g/d). Olive oil consumption was associated with a 22% lower relative risk of T2D (RR: 0.78; 95% CI: 0.69 to 0.87, per 25 g/d) without evidence of heterogeneity. Similarly, it was inversely associated with all-cause mortality (RR: 0.89; 95% CI: 0.85 to 0.93, per 25 g/d). Only the results for T2D were homogeneous. Specific sources of heterogeneity for the other 3 outcomes were not always apparent. CONCLUSIONS Prospective studies supported a beneficial association of olive oil consumption with CVD, T2D and all-cause mortality, but they did not show any association with cancer risk.
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Affiliation(s)
- Miguel A Martínez-González
- Department of Preventive Medicine and Public Health, University of Navarra-IDISNA, 31008 Pamplona, Spain.
| | - Carmen Sayón-Orea
- Department of Preventive Medicine and Public Health, University of Navarra-IDISNA, 31008 Pamplona, Spain.
| | - Vanessa Bullón-Vela
- Department of Preventive Medicine and Public Health, University of Navarra-IDISNA, 31008 Pamplona, Spain.
| | - Maira Bes-Rastrollo
- Department of Preventive Medicine and Public Health, University of Navarra-IDISNA, 31008 Pamplona, Spain.
| | - Fernando Rodríguez-Artalejo
- Department of Preventive Medicine and Public Health, School of Medicine. Universidad Autónoma de Madrid-IdiPaz, CIBERESP and IMDEA-Food (CEI UAM+CSIC), Madrid, Spain.
| | - María José Yusta-Boyo
- Spanish Agency for Food Safety & Nutrition (AESAN), Ministry of Consumer Affairs, Madrid, Spain.
| | - Marta García-Solano
- Spanish Agency for Food Safety & Nutrition (AESAN), Ministry of Consumer Affairs, Madrid, Spain.
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17
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The effects of olive oil consumption on blood lipids: a systematic review and dose-response meta-analysis of randomised controlled trials. Br J Nutr 2022:1-9. [PMID: 36408701 DOI: 10.1017/s0007114522003683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We performed a systematic review and dose-response meta-analysis of randomised trials on the effects of olive oil consumption on blood lipids in adults. A systematic search was performed in PubMed, Scopus and Web of Science databases until May 2021. Randomised controlled trials (RCT) evaluating the effect of olive oil intake on serum total cholesterol (TC), TAG, LDL-cholesterol and HDL-cholesterol in adults were included. The mean difference (MD) and 95 % CI were calculated for each 10 g/d increment in olive oil intake using a random-effects model. A total of thirty-four RCT with 1730 participants were included. Each 10 g/d increase in olive oil consumption had minimal effects on blood lipids including TC (MD: 0·79 mg/dl; 95 % CI (-0·08, 1·66); I2 = 57 %; n 31, GRADE = low certainty), LDL-cholesterol (MD: 0·04 mg/dl, 95 % CI (-1·01, 0·94); I2 = 80 %; n 31, GRADE = very low certainty), HDL-cholesterol (MD: 0·22 mg/dl; 95 % CI (-0·01, 0·45); I2 = 38 %; n 33, GRADE = low certainty) and TAG (MD: 0·39 mg/dl; 95 % CI (-0·33, 1·11); I2 = 7 %; n 32, GRADE = low certainty). Levels of TC increased slightly with the increase in olive oil consumption up to 30 g/d (MD30 g/d: 2·76 mg/dl, 95 % CI (0·01, 5·51)) and then appeared to plateau with a slight downward curve. A trivial non-linear dose-dependent increment was seen for HDL-cholesterol, with the greatest increment at 20 g/d (MD20 g/d: 1·03 mg/dl, 95 % CI (-1·23, 3·29)). Based on existing evidence, olive oil consumption had trivial effects on levels of serum lipids in adults. More large-scale randomized trials are needed to present more reliable results.
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18
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Xia M, Zhong Y, Peng Y, Qian C. Olive oil consumption and risk of cardiovascular disease and all-cause mortality: A meta-analysis of prospective cohort studies. Front Nutr 2022; 9:1041203. [PMID: 36330142 PMCID: PMC9623257 DOI: 10.3389/fnut.2022.1041203] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 09/29/2022] [Indexed: 12/02/2022] Open
Abstract
Background Epidemiological studies have shown the preventive effects of olive oil consumption against cardiovascular events and all-cause deaths, but the results remain inconsistent. Herein, we performed a meta-analysis to elucidate this association. Materials and methods A systematical literature search was conducted in online databases (PubMed and Scopus) through July 31, 2022. Prospective cohort studies providing the risk of total cardiovascular disease (CVD) or all-cause mortality for olive oil consumption were included. Relative risks (RRs) and 95% confidence intervals (CIs) were aggregated using random-effect model. Results This meta-analysis included 13 studies comprising a total of 13 prospective cohorts. Compared with lower consumption, higher consumption of olive oil conferred a significantly reduced risk in CVD (RR: 0.85, 95% CI: 0.77–0.93, p < 0.001) and all-cause mortality (RR: 0.83, 95% CI: 0.77–0.90, p < 0.001). This beneficial effect was not modified by the potential confounders such as study country, sample size, follow-up duration, gender, and type of olive oil consumed. In dose-response meta-analysis, the summary RR of per 5-g/days increase in olive oil intake was 0.96 (95% CI: 0.93–0.99, p = 0.005) for CVD and 0.96 (95% CI: 0.95–0.96, p < 0.001) for all-cause mortality. Non-linear associations of olive oil intake with CVD and all-cause mortality were also identified (both p for non-linearity < 0.001), with little additional or no risk reduction observed beyond the consumption of approximately 20 g/days. Conclusion Olive oil consumption is inversely related to the risk of CVD and all-cause mortality. Such benefits seem to be obtained with an intake of olive oil up to 20 g/days, which deserves further exploration in future studies.
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Nicol K, Mansoorian B, Latosinska A, Koutroulaki A, Mullen B, Combet E. No evidence of differential impact of sunflower and rapeseed oil on biomarkers of coronary artery disease or chronic kidney disease in healthy adults with overweight and obesity: result from a randomised control trial. Eur J Nutr 2022; 61:3119-3133. [PMID: 35381848 PMCID: PMC9363295 DOI: 10.1007/s00394-022-02810-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 11/03/2021] [Indexed: 11/28/2022]
Abstract
Purpose The perceived benefits and risks associated with seed oil intake remain controversial, with a limited number of studies investigating the impact of intake on a range of compounds used as cardiometabolic markers. This study aimed to explore the proteomic and cardiometabolic effects of commonly consumed seed oils in the UK, with different fatty acid profiles. Methods In a parallel randomised control design, healthy adults (n = 84), aged 25–72 with overweight or obesity were randomised to one of three groups: control (habitual diet, CON); 20 mL rapeseed oil per day (RO), or 20 mL sunflower oil per day (SO). Blood, spot urine and anthropometric measures were obtained at 0, 6 and 12 weeks. Proteomic biomarkers analysis was conducted for coronary arterial disease (CAD) and chronic kidney disease (CKD) using capillary electrophoresis coupled to mass spectrometry (CE-MS). Blood lipids, fasting blood glucose, glycative/oxidative stress and inflammatory markers were also analysed. Results No differences in change between time points were observed between groups for CAD or CKD peptide fingerprint scores. No change was detected within groups for CAD or CKD scores. No detectable differences were observed between groups at week 6 or 12 for the secondary outcomes, except median 8-isoprostane, ~ 50% higher in the SO group after 12-weeks compared to RO and CON groups (p = 0.03). Conclusion The replacement of habitual fat with either RO or SO for 12 weeks does not lead to an improvement or worsening in cardiovascular health markers in people with overweight or obesity. Trial registration Trial registration clinicaltrials.gov NCT04867629, retrospectively registered 30/04/2021. Supplementary Information The online version contains supplementary material available at 10.1007/s00394-022-02810-5.
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Affiliation(s)
- Katie Nicol
- Human Nutrition, School of Medicine Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, New Lister Building, Glasgow Royal Infirmary, Alexandra Parade, Glasgow, G31 2ER, UK
| | - Bahareh Mansoorian
- Human Nutrition, School of Medicine Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, New Lister Building, Glasgow Royal Infirmary, Alexandra Parade, Glasgow, G31 2ER, UK
| | | | - Aimilia Koutroulaki
- Human Nutrition, School of Medicine Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, New Lister Building, Glasgow Royal Infirmary, Alexandra Parade, Glasgow, G31 2ER, UK
| | - Bill Mullen
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Emilie Combet
- Human Nutrition, School of Medicine Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, New Lister Building, Glasgow Royal Infirmary, Alexandra Parade, Glasgow, G31 2ER, UK.
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20
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Jiménez-Sánchez A, Martínez-Ortega AJ, Remón-Ruiz PJ, Piñar-Gutiérrez A, Pereira-Cunill JL, García-Luna PP. Therapeutic Properties and Use of Extra Virgin Olive Oil in Clinical Nutrition: A Narrative Review and Literature Update. Nutrients 2022; 14:nu14071440. [PMID: 35406067 PMCID: PMC9003415 DOI: 10.3390/nu14071440] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 02/06/2023] Open
Abstract
Extra virgin olive oil (EVOO) is a cornerstone of the Mediterranean diet (MedD). In this narrative review, we synthesize and illustrate the various characteristics and clinical applications of EVOO and its components—such as oleic acid, hydroxytyrosol, and oleuropein—in the field of clinical nutrition and dietetics. The evidence is split into diet therapy, oleic acid-based enteral nutrition formulations and oral supplementation formulations, oleic acid-based parenteral nutrition, and nutraceutical supplementation of minor components of EVOO. EVOO has diverse beneficial health properties, and current evidence supports the use of whole EVOO in diet therapy and the supplementation of its minor components to improve cardiovascular health, lipoprotein metabolism, and diabetes mellitus in clinical nutrition. Nevertheless, more intervention studies in humans are needed to chisel specific recommendations for its therapeutic use through different formulations in other specific diseases and clinical populations.
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Affiliation(s)
- Andrés Jiménez-Sánchez
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (P.J.R.-R.); (A.P.-G.); (J.L.P.-C.)
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
- Correspondence: (A.J.-S.); (P.P.G.-L.)
| | - Antonio Jesús Martínez-Ortega
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Torrecárdenas, C. Hermandad de Donantes de Sangre, s/n, 04009 Almería, Spain
| | - Pablo Jesús Remón-Ruiz
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (P.J.R.-R.); (A.P.-G.); (J.L.P.-C.)
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
| | - Ana Piñar-Gutiérrez
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (P.J.R.-R.); (A.P.-G.); (J.L.P.-C.)
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
| | - José Luis Pereira-Cunill
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (P.J.R.-R.); (A.P.-G.); (J.L.P.-C.)
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
| | - Pedro Pablo García-Luna
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (P.J.R.-R.); (A.P.-G.); (J.L.P.-C.)
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Avda. Manuel Siurot s/n, 41013 Seville, Spain;
- Correspondence: (A.J.-S.); (P.P.G.-L.)
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21
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Serreli G, Le Sayec M, Diotallevi C, Teissier A, Deiana M, Corona G. Conjugated Metabolites of Hydroxytyrosol and Tyrosol Contribute to the Maintenance of Nitric Oxide Balance in Human Aortic Endothelial Cells at Physiologically Relevant Concentrations. Molecules 2021; 26:molecules26247480. [PMID: 34946563 PMCID: PMC8707355 DOI: 10.3390/molecules26247480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 12/17/2022] Open
Abstract
Nitric oxide (NO) is an important signaling molecule involved in many pathophysiological processes. NO mediates vasodilation and blood flow in the arteries, and its action contributes to maintaining vascular homeostasis by inhibiting vascular smooth muscle contraction and growth, platelet aggregation, and leukocyte adhesion to the endothelium. Dietary antioxidants and their metabolites have been found to be directly and/or indirectly involved in the modulation of the intracellular signals that lead to the production of NO. The purpose of this study was to investigate the contribution of conjugated metabolites of hydroxytyrosol (HT) and tyrosol (TYR) to the release of NO at the vascular level, and the related mechanism of action, in comparison to their parental forms. Experiments were performed in human aortic endothelial cells (HAEC) to evaluate the superoxide production, the release of NO and production of cyclic guanosine monophosphate (cGMP), the activation of serine/threonine-protein kinase 1 (Akt1), and the activation state of endothelial nitric oxide synthase (eNOS). It was observed that the tested phenolic compounds enhanced NO and cGMP concentration, inhibiting its depletion caused by superoxide overproduction. Moreover, some of them enhanced the activation of Akt (TYR, HT metabolites) and eNOS (HT, HVA, TYR-S, HT-3S). Overall, the obtained data showed that these compounds promote NO production and availability, suggesting that HT and TYR conjugated metabolites may contribute to the effects of parental extra virgin olive oil (EVOO) phenolics in the prevention of cardiovascular diseases.
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Affiliation(s)
- Gabriele Serreli
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK;
- Department of Biomedical Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy;
| | - Melanie Le Sayec
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK;
| | - Camilla Diotallevi
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK;
| | - Alice Teissier
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK;
| | - Monica Deiana
- Department of Biomedical Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy;
| | - Giulia Corona
- School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK;
- Correspondence: ; Tel.: +44-(0)20-8392-3622
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22
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Di Lorenzo L, Vimercati L, Pipoli A, Manghisi NM, Lampignano L, Caputi A, De Maria L, Zupo R, De Pergola G. Interplay Between Adherence to the Mediterranean Diet and Lipid Profile: A Comparative Survey Between Day-Time Healthcare and Non-healthcare Female Workers. Front Public Health 2021; 9:649760. [PMID: 34805058 PMCID: PMC8599123 DOI: 10.3389/fpubh.2021.649760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 10/13/2021] [Indexed: 11/28/2022] Open
Abstract
Introduction: Occupational physicians, as an aspect of the periodic health surveillance of workers prescribed by law, must develop preventive programs against adverse health-related occurrences (Legislative Decree 81/2008, art.25) to reduce major risk factors for non-communicable/chronic diseases. Eating habits play an important role in defining risk trajectories in the workplace. Methods: We randomly and cross-sectionally evaluated 147 females, of which 59 were healthcare workers (HCWs) and 88 were non-HCWs. The assessment included a dietary screening for adherence to the Mediterranean diet (MD) and a clinical baseline collection of major fluid biomarkers and anthropometric indicators for cardiovascular and metabolic risk. Results: The HCW group exhibited greater adherence to the MD than the non-HCW group. Nevertheless, they showed higher serum levels of triglycerides and total cholesterol. Menopause and type of work significantly and unfavorably affected triglyceride serum levels among HCWs. Conclusion: Greater preventive efforts are needed in the context of periodic health surveillance by occupational physicians. Disseminating additional information on a healthier lifestyle, particularly among female workers of perimenopausal age, is a key issue.
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Affiliation(s)
- Luigi Di Lorenzo
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Luigi Vimercati
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Antonella Pipoli
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Nicola Mariano Manghisi
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Luisa Lampignano
- Population Health Unit, Salus in Apulia Study, National Institute of Gastroenterology “Saverio de Bellis” Research Hospital, Bari, Italy
| | - Antonio Caputi
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Luigi De Maria
- Interdisciplinary Department of Medicine (DIM), Section of Occupational Medicine B. Ramazzini, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Roberta Zupo
- Population Health Unit, Salus in Apulia Study, National Institute of Gastroenterology “Saverio de Bellis” Research Hospital, Bari, Italy
| | - Giovanni De Pergola
- Population Health Unit, Salus in Apulia Study, National Institute of Gastroenterology “Saverio de Bellis” Research Hospital, Bari, Italy
- Department of Biomedical Science and Human Oncology, School of Medicine, University of Bari, Bari, Italy
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23
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Extra virgin olive oil high in polyphenols improves antioxidant status in adults: a double-blind, randomized, controlled, cross-over study (OLIVAUS). Eur J Nutr 2021; 61:1073-1086. [PMID: 34716791 DOI: 10.1007/s00394-021-02712-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 10/13/2021] [Indexed: 12/13/2022]
Abstract
PURPOSE Olive oil polyphenols have been associated with cardiovascular health benefits. This study examined the antioxidant and anti-inflammatory effect of extra-virgin high polyphenol olive oil (HPOO) vs. low polyphenol olive oil (LPOO) in healthy Australian adults. METHODS In a double-blind cross-over trial, 50 participants (aged 38.5 ± 13.9 years, 66% females) were randomized to consume 60 mL/day of HPOO (320 mg/kg polyphenols) or LPOO (86 mg/kg polyphenols) for three weeks. Following a 2-week wash-out period, participants crossed-over to the alternate treatment. Plasma oxidized low-density lipoprotein (ox-LDL), total antioxidant capacity (TAC), high-sensitivity C-reactive protein (hs-CRP) and anthropometrics were measured at baseline and follow-up. RESULTS Fourty-three participants completed the study. Although there were no significant differences between treatments in the total sample, plasma ox-LDL decreased by 6.5 mU/mL (95%CI - 12.4 to - 0.5) and TAC increased by 0.03 mM (95% CI 0.006-0.05) only in the HPOO arm. Stratified analyses were also performed by cardiovascular disease risk status defined by abdominal obesity (WC > 94 cm in males, > 80 cm in females) or inflammation (hs-CRP > 1 mg/L). In the subgroup with abdominal obesity, ox-LDL decreased by 13.5 mU/mL (95% CI - 23.5 to - 3.6) and TAC increased by 0.04 mM (95% CI 0.006-0.07) only after HPOO consumption. In the subgroup with inflammation, hs-CRP decreased by 1.9 mg/L (95% CI - 3.7 to -0.1) only in the HPOO arm. CONCLUSIONS Although there were no significant differences between treatments, the changes observed after HPOO consumption demonstrate the antioxidant and anti-inflammatory effect of this oil, which is more pronounced in adults with high cardiometabolic risk (Clinical Trial Registration: ACTRN12618000706279).
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24
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Otrante A, Trigui A, Walha R, Berrougui H, Fulop T, Khalil A. Extra Virgin Olive Oil Prevents the Age-Related Shifts of the Distribution of HDL Subclasses and Improves Their Functionality. Nutrients 2021; 13:2235. [PMID: 34209930 PMCID: PMC8308442 DOI: 10.3390/nu13072235] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 12/30/2022] Open
Abstract
High-density lipoproteins (HDL) maintain cholesterol homeostasis through the role they play in regulating reverse cholesterol transport (RCT), a process by which excess cholesterol is transported back to the liver for elimination. However, RCT can be altered in the presence of cardiovascular risk factors, such as aging, which contributes to the increase in the incidence of cardiovascular diseases (CVD). The present study was aimed at investigating the effect of extra virgin olive oil (EVOO) intake on the cholesterol efflux capacity (CEC) of HDL, and to elucidate on the mechanisms by which EVOO intake improves the anti-atherogenic activity of HDL. A total of 84 healthy women and men were enrolled and were distributed, according to age, into two groups: 27 young (31.81 ± 6.79 years) and 57 elderly (70.72 ± 5.6 years) subjects. The subjects in both groups were given 25 mL/d of extra virgin olive oil (EVOO) for 12 weeks. CEC was measured using J774 macrophages radiolabeled with tritiated cholesterol ((3H) cholesterol). HDL subclass distributions were analyzed using the Quantimetrix Lipoprint® system. The HDL from the elderly subjects exhibited a lower level of CEC, at 11.12% (p < 0.0001), than the HDL from the young subjects. The CEC of the elderly subjects returned to normal levels following 12 weeks of EVOO intake. An analysis of the distribution of HDL subclasses showed that HDL from the elderly subjects were composed of lower levels of large HDL (L-HDL) (p < 0.03) and higher levels of small HDL (S-HDL) (p < 0.002) compared to HDL from the young subjects. A multiple linear regression analysis revealed a positive correlation between CEC and L-HDL levels (r = 0.35 and p < 0.001) as well as an inverse correlation between CEC and S-HDL levels (r = -0.27 and p < 0.01). This correlation remained significant even when several variables, including age, sex, and BMI as well as low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and glucose levels (β = 0.28, p < 0.002, and β = 0.24, p = 0.01) were accounted for. Consuming EVOO for 12 weeks modulated the age-related difference in the distribution of HDL subclasses by reducing the level of S-HDL and increasing the level of intermediate-HDL/large-HDL (I-HDL/L-HDL) in the elderly subjects. The age-related alteration of the CEC of HDL was due, in part, to an alteration in the distribution of HDL subclasses. A diet enriched in EVOO improved the functionality of HDL through an increase in I-HDL/L-HDL and a decrease in S-HDL.
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Affiliation(s)
- Alyann Otrante
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
| | - Amal Trigui
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
| | - Roua Walha
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
| | - Hicham Berrougui
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
- Department of Biology, Polydisciplinary Faculty, University Sultan Moulay Slimane, 23000 Beni Mellal, Morocco
| | - Tamas Fulop
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
| | - Abdelouahed Khalil
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, QC J1H 4N4, Canada; (A.O.); (A.T.); (R.W.); (H.B.); (T.F.)
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25
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Deflaoui L, Setyaningsih W, Palma M, Mekhoukhe A, Tamendjari A. Phenolic compounds in olive oil by solid phase extraction – Ultra performance liquid chromatography – Photodiode array detection for varietal characterization. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103102] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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26
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Schwingshackl L, Zähringer J, Beyerbach J, Werner SS, Heseker H, Koletzko B, Meerpohl JJ. Total Dietary Fat Intake, Fat Quality, and Health Outcomes: A Scoping Review of Systematic Reviews of Prospective Studies. ANNALS OF NUTRITION AND METABOLISM 2021; 77:4-15. [PMID: 33789278 DOI: 10.1159/000515058] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/03/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION We conducted a scoping review of systematic reviews (SRs) on dietary fat intake and health outcomes in human adults within the context of a position paper by the "International Union of Nutritional Sciences Task force on Dietary Fat Quality" tasked to summarize the available evidence and provide dietary recommendations. METHODS We systematically searched several databases for relevant SRs of randomized controlled trials (RCTs) and/or prospective cohort studies published between 2015 and 2019 assessing the association between dietary fat and health outcomes. RESULTS Fifty-nine SRs were included. The findings from SRs of prospective cohort studies, which frequently compare the highest versus lowest intake categories, found mainly no association of total fat, monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), and saturated fatty acid (SFA) with risk of chronic diseases. SRs of RCTs applying substitution analyses indicate that SFA replacement with PUFA and/or MUFA improves blood lipids and glycemic control, with the effect of PUFA being more pronounced. A higher intake of total trans-fatty acid (TFA), but not ruminant TFA, was probably associated with an increased risk of mortality and cardiovascular disease based on existing SRs. CONCLUSION Overall, the available published evidence deems it reasonable to recommend replacement of SFA with MUFA and PUFA and avoidance of consumption of industrial TFA.
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Affiliation(s)
- Lukas Schwingshackl
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jasmin Zähringer
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jessica Beyerbach
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sarah S Werner
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Helmut Heseker
- Department of Sports and Health, Paderborn University, Paderborn, Germany
| | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine, Department Paediatrics, Dr. von Hauner Children's Hospital, University of Munich Medical Center, LMU - Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Joerg J Meerpohl
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Cochrane Germany, Cochrane Germany Foundation, Freiburg, Germany
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27
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Teasdale SB, Marshall S, Abbott K, Cassettari T, Duve E, Fayet-Moore F. How should we judge edible oils and fats? An umbrella review of the health effects of nutrient and bioactive components found in edible oils and fats. Crit Rev Food Sci Nutr 2021; 62:5167-5182. [PMID: 33706623 DOI: 10.1080/10408398.2021.1882382] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dietary guidelines for many Western countries base their edible oil and fat recommendations solely on saturated fatty acid content. This study aims to demonstrate which nutritional and bioactive components make up commonly consumed edible oils and fats; and explore the health effects and strength of evidence for key nutritional and bioactive components of edible oils. An umbrella review was conducted in several stages. Food composition databases of Australia and the United States of America, and studies were examined to profile nutrient and bioactive content of edible oils and fats. PUBMED and Cochrane databases were searched for umbrella reviews, systematic literature reviews of randomized controlled trials or cohort studies, individual randomized controlled trials, and individual cohort studies to examine the effect of the nutrient or bioactive on high-burden chronic diseases (cardiovascular disease, type 2 diabetes mellitus, obesity, cancer, mental illness, cognitive impairment). Substantial systematic literature review evidence was identified for fatty acid categories, tocopherols, biophenols, and phytosterols. Insufficient evidence was identified for squalene. The evidence supports high mono- and polyunsaturated fatty acid compositions, total biophenol content, phytosterols, and possibly high α-tocopherol content as having beneficial effects on high-burden health comes. Future dietary guidelines should use a more sophisticated approach to judge edible oils beyond saturated fatty acid content.
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Affiliation(s)
- Scott B Teasdale
- Department of Science, Nutrition Research Australia, Sydney, Australia.,School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Skye Marshall
- Department of Science, Nutrition Research Australia, Sydney, Australia.,Bond University Nutrition & Dietetics Research Group, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia
| | - Kylie Abbott
- Department of Science, Nutrition Research Australia, Sydney, Australia
| | - Tim Cassettari
- Department of Science, Nutrition Research Australia, Sydney, Australia.,Department of Translational Science, Nutrition Research Australia, Sydney, Australia
| | - Emily Duve
- Department of Science, Nutrition Research Australia, Sydney, Australia.,Department of Translational Science, Nutrition Research Australia, Sydney, Australia
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28
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Menzel A, Samouda H, Dohet F, Loap S, Ellulu MS, Bohn T. Common and Novel Markers for Measuring Inflammation and Oxidative Stress Ex Vivo in Research and Clinical Practice-Which to Use Regarding Disease Outcomes? Antioxidants (Basel) 2021; 10:antiox10030414. [PMID: 33803155 PMCID: PMC8001241 DOI: 10.3390/antiox10030414] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 02/06/2023] Open
Abstract
Many chronic conditions such as cancer, chronic obstructive pulmonary disease, type-2 diabetes, obesity, peripheral/coronary artery disease and auto-immune diseases are associated with low-grade inflammation. Closely related to inflammation is oxidative stress (OS), which can be either causal or secondary to inflammation. While a low level of OS is physiological, chronically increased OS is deleterious. Therefore, valid biomarkers of these signalling pathways may enable detection and following progression of OS/inflammation as well as to evaluate treatment efficacy. Such biomarkers should be stable and obtainable through non-invasive methods and their determination should be affordable and easy. The most frequently used inflammatory markers include acute-phase proteins, essentially CRP, serum amyloid A, fibrinogen and procalcitonin, and cytokines, predominantly TNFα, interleukins 1β, 6, 8, 10 and 12 and their receptors and IFNγ. Some cytokines appear to be disease-specific. Conversely, OS-being ubiquitous-and its biomarkers appear less disease or tissue-specific. These include lipid peroxidation products, e.g., F2-isoprostanes and malondialdehyde, DNA breakdown products (e.g., 8-OH-dG), protein adducts (e.g., carbonylated proteins), or antioxidant status. More novel markers include also -omics related ones, as well as non-invasive, questionnaire-based measures, such as the dietary inflammatory-index (DII), but their link to biological responses may be variable. Nevertheless, many of these markers have been clearly related to a number of diseases. However, their use in clinical practice is often limited, due to lacking analytical or clinical validation, or technical challenges. In this review, we strive to highlight frequently employed and useful markers of inflammation-related OS, including novel promising markers.
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Affiliation(s)
- Alain Menzel
- Laboratoires Réunis, 38, Rue Hiehl, L-6131 Junglinster, Luxembourg; (A.M.); (F.D.)
| | - Hanen Samouda
- Nutrition and Health Research Group, Department of Population Health, Luxembourg Institute of Health, 1 A-B, Rue Thomas Edison, L-1445 Strassen, Luxembourg;
| | - Francois Dohet
- Laboratoires Réunis, 38, Rue Hiehl, L-6131 Junglinster, Luxembourg; (A.M.); (F.D.)
| | - Suva Loap
- Clinic Cryo Esthetic, 11 Rue Éblé, 75007 Paris, France;
| | - Mohammed S. Ellulu
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, Al-Azhar University of Gaza (AUG), Gaza City 00970, Palestine;
| | - Torsten Bohn
- Nutrition and Health Research Group, Department of Population Health, Luxembourg Institute of Health, 1 A-B, Rue Thomas Edison, L-1445 Strassen, Luxembourg;
- Correspondence:
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29
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Micek A, Godos J, Del Rio D, Galvano F, Grosso G. Dietary Flavonoids and Cardiovascular Disease: A Comprehensive Dose-Response Meta-Analysis. Mol Nutr Food Res 2021; 65:e2001019. [PMID: 33559970 DOI: 10.1002/mnfr.202001019] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 01/18/2021] [Indexed: 12/13/2022]
Abstract
SCOPE Dietary flavonoids have shown potential in the prevention of noncommunicable diseases. The aim of the present study is to conduct a dose-response meta-analysis on the association between dietary intake of total, subclasses and individual flavonoids and risk of cardiovascular disease (CVD). METHODS AND RESULTS Electronic databases are searched. A total of 39 prospective cohort studies are included, comprising 1 501 645 individuals and a total of 33 637 cases of CVD, 23 664 of coronary heart disease (CHD), and 11 860 of stroke. Increasing dietary intake of total flavonoids is linearly associated with a lower risk of CVD. Among the main classes of flavonoids, increasing intake of anthocyanins and flavan-3-ols is inversely associated with risk of CVD, while flavonols and flavones with CHD. Only increasing flavanones showed a linear inverse association with stroke risk. Catechins showed a favorable effect toward all cardiovascular outcomes. Among individual compounds, intake of quercetin and kaempferol is linearly associated with lower risk of CHD and CVD, respectively. However, higher intake of all the aforementioned compounds is associated, with a various extent, with a lower risk of CVD when considering comparison of extreme categories of consumption. CONCLUSION The results of this study provide evidence of potential cardiovascular benefits of a flavonoid-rich diet.
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Affiliation(s)
- Agnieszka Micek
- Department of Nursing Management and Epidemiology Nursing, Faculty of Health Sciences, Jagiellonian University Medical College, Kraków, Poland
| | - Justyna Godos
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Daniele Del Rio
- School of Advanced Studies on Food and Nutrition, University of Parma, Parma, Italy.,Department of Veterinary Science, University of Parma, Parma, Italy
| | - Fabio Galvano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giuseppe Grosso
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
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30
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Morze J, Schwingshackl L. Letter to the Editor on "Comparing the Effects of Docosahexaenoic and Eicosapentaenoic Acids on Inflammation Markers Using Pairwise and Network Meta-Analyses of Randomized Controlled Trials". Adv Nutr 2021; 12:276-277. [PMID: 33517408 PMCID: PMC7850136 DOI: 10.1093/advances/nmaa128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jakub Morze
- From the Department of Cardiology and Internal Diseases, University of Warmia and Mazury, Olsztyn, Poland,Department of Human Nutrition, University of Warmia and Mazury, Olsztyn, Poland
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31
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Rodríguez-López CE, Hong B, Paetz C, Nakamura Y, Koudounas K, Passeri V, Baldoni L, Alagna F, Calderini O, O'Connor SE. Two bi-functional cytochrome P450 CYP72 enzymes from olive (Olea europaea) catalyze the oxidative C-C bond cleavage in the biosynthesis of secoxy-iridoids - flavor and quality determinants in olive oil. THE NEW PHYTOLOGIST 2021; 229:2288-2301. [PMID: 33124697 DOI: 10.1111/nph.16975] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Olive (Olea europaea) is an important crop in Europe, with high cultural, economic and nutritional significance. Olive oil flavor and quality depend on phenolic secoiridoids, but the biosynthetic pathway of these iridoids remains largely uncharacterized. We discovered two bifunctional cytochrome P450 enzymes, catalyzing the rare oxidative C-C bond cleavage of 7-epi-loganin to produce oleoside methyl ester (OeOMES) and secoxyloganin (OeSXS), both through a ketologanin intermediary. Although these enzymes are homologous to the previously reported Catharanthus roseus secologanin synthase (CrSLS), the substrate and product profiles differ. Biochemical assays provided mechanistic insights into the two-step OeOMES and CrSLS reactions. Model-guided mutations of OeOMES changed the product profile in a predictable manner, revealing insights into the molecular basis for this change in product specificity. Our results suggest that, in contrast to published hypotheses, in planta production of secoxy-iridoids is secologanin-independent. Notably, sequence data of cultivated and wild olives point to a relation between domestication and OeOMES expression. Thus, the discovery of this key biosynthetic gene suggests a link between domestication and secondary metabolism, and could potentially be used as a genetic marker to guide next-generation breeding programs.
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Affiliation(s)
- Carlos E Rodríguez-López
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Benke Hong
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Christian Paetz
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Yoko Nakamura
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | | | - Valentina Passeri
- Institute of Biosciences and Bioresources, CNR, Perugia, 06128, Italy
| | - Luciana Baldoni
- Institute of Biosciences and Bioresources, CNR, Perugia, 06128, Italy
| | | | - Ornella Calderini
- Institute of Biosciences and Bioresources, CNR, Perugia, 06128, Italy
| | - Sarah E O'Connor
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
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32
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Wang Q, Liu R, Chang M, Zhang H, Jin Q, Wang X. Dietary oleic acid supplementation and blood inflammatory markers: a systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2020; 62:2508-2525. [PMID: 33305589 DOI: 10.1080/10408398.2020.1854673] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The aim of this systematic review and meta-analysis was to analyze data from randomized controlled trials (RCTs) assessing the effects of oleic acid (OA) supplementation on blood inflammatory markers in adults. PubMed, EMBASE and Cochrane Library databases were systematically searched from 1950 to 2019, with adults and a minimum intervention duration of 4 weeks. The effect size was estimated, adopting standardized mean difference (SMD) and 95% confidence interval (CI). Of the 719 identified studies, thirty-one RCTs involving 1634 subjects were eligible. The results of this study revealed that increasing OA supplementation significantly reduced C-reactive protein (CRP) (SMD: -0.11, 95% CI: -0.21, -0.01, P = 0.038). However, dietary OA consumption did not significantly affect tumor necrosis factor (TNF) (SMD: -0.05, 95% CI: -0.19, 0.10, P = 0.534), interleukin 6 (IL-6) (SMD: 0.01, 95% CI: -0.10, 0.13, P = 0.849), fibrinogen (SMD: 0.08, 95% CI: -0.16, 0.31, P = 0.520), plasminogen activator inhibitor type 1 (PAI-1) activity (SMD: -0.11, 95% CI: -0.34, 0.12, P = 0.355), soluble intercellular adhesion molecule-1 (sICAM-1) (SMD: -0.06, 95% CI: -0.26, 0.13, P = 0.595) or soluble vascular cell adhesion molecule-1 (sVCAM-1) (SMD: -0.04, 95% CI: -0.27, 0.18, P = 0.701). Overall, the meta-analysis demonstrated that dietary OA supplementation significantly reduced CRP, yet did not affect other inflammatory markers including TNF, IL-6, fibrinogen, PAI-1 activity, sICAM-1or sVCAM-1.
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Affiliation(s)
- Qiong Wang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Ruijie Liu
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Ming Chang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Hui Zhang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Qingzhe Jin
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xingguo Wang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
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Fourati M, Smaoui S, Hlima HB, Elhadef K, Braïek OB, Ennouri K, Mtibaa AC, Mellouli L. Bioactive Compounds and Pharmacological Potential of Pomegranate (Punica granatum) Seeds - A Review. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2020; 75:477-486. [PMID: 33040298 DOI: 10.1007/s11130-020-00863-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
The use of complementary medicine has recently increased in an attempt to find effective alternative therapies that reduce the adverse effects of drugs. Pomegranate (Punica granatum L.) by-products, such as seeds, is a rich source of phytochemicals with a high antioxidant activity, thus possessing health benefits. For the identification and quantification of the pomegranate seeds chemical compounds, particular attention has been drawn to the latest developments in the HPLC coupling with electrospray ionization (ESI) MS/MS detection. In fact, a wide range of phytochemicals including phenolic acid, anthocyanins, flavonoids, hydrolysable tannins and other polyphenols were characterized. Furthermore, an exhaustive review of the scientific literature on pomegranate seeds on biomedicine and pharmacotherapy was carried out. Indeed, both in vitro and in vivo studies have demonstrated how pomegranate seeds possess antioxidant, anti- cardiovascular diseases, anti-osteoporosis, antidiabetic, anti-inflammatory and anticancer activities. The present review describes a recent tendency in research focusing on the chemical and biomedical features of the pomegranate seeds to value them as natural additives or active compounds for first-order diseases.
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Affiliation(s)
- Mariam Fourati
- Laboratory of Microbial, Enzymatic Biotechnology and Biomolecules (LBMEB), Center of Biotechnology of Sfax, University of Sfax-Tunisia, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, Sfax, Tunisia
| | - Slim Smaoui
- Laboratory of Microbial, Enzymatic Biotechnology and Biomolecules (LBMEB), Center of Biotechnology of Sfax, University of Sfax-Tunisia, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, Sfax, Tunisia.
| | - Hajer Ben Hlima
- Laboratoire de Génie Enzymatique et de Microbiologie, Equipe de Biotechnologie des Algues, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, 3038, Sfax, Tunisia
| | - Khaoula Elhadef
- Laboratory of Microbial, Enzymatic Biotechnology and Biomolecules (LBMEB), Center of Biotechnology of Sfax, University of Sfax-Tunisia, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, Sfax, Tunisia
| | - Olfa Ben Braïek
- Laboratory of Transmissible Diseases and Biologically Active Substances (LR99ES27), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Karim Ennouri
- Laboratory of Amelioration and Protection of Olive Genetic Resources, Olive Tree Institute, Sfax University, Sfax, Tunisia
| | - Ahlem Chakchouk Mtibaa
- Laboratory of Microbial, Enzymatic Biotechnology and Biomolecules (LBMEB), Center of Biotechnology of Sfax, University of Sfax-Tunisia, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, Sfax, Tunisia
| | - Lotfi Mellouli
- Laboratory of Microbial, Enzymatic Biotechnology and Biomolecules (LBMEB), Center of Biotechnology of Sfax, University of Sfax-Tunisia, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, Sfax, Tunisia
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Hidalgo-Mora JJ, Cortés-Sierra L, García-Pérez MÁ, Tarín JJ, Cano A. Diet to Reduce the Metabolic Syndrome Associated with Menopause. The Logic for Olive Oil. Nutrients 2020; 12:nu12103184. [PMID: 33081027 PMCID: PMC7603201 DOI: 10.3390/nu12103184] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
The rates of metabolic syndrome are increasing in parallel with the increasing prevalence of obesity, primarily due to its concomitant insulin resistance. This is particularly concerning for women, as the years around menopause are accompanied by an increase in visceral obesity, a strong determinant of insulin resistance. A fall in estrogens and increase in the androgen/estrogen ratio is attributed a determining role in this process, which has been confirmed in other physiological models, such as polycystic ovary syndrome. A healthy lifestyle, with special emphasis on nutrition, has been recommended as a first-line strategy in consensuses and guidelines. A consistent body of evidence has accumulated suggesting that the Mediterranean diet, with olive oil as a vital component, has both health benefits and acceptable adherence. Herein, we provide an updated overview of current knowledge on the benefits of olive oil most relevant to menopause-associated metabolic syndrome, including an analysis of the components with the greatest health impact, their effect on basic mechanisms of disease, and the state of the art regarding their action on the main features of metabolic syndrome.
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Affiliation(s)
- Juan José Hidalgo-Mora
- Service of Obstetrics and Gynecology, Hospital Clínico Universitario—INCLIVA, Av Blasco Ibáñez 17, 46010 Valencia, Spain; (J.J.H.-M.); (L.C.-S.)
| | - Laura Cortés-Sierra
- Service of Obstetrics and Gynecology, Hospital Clínico Universitario—INCLIVA, Av Blasco Ibáñez 17, 46010 Valencia, Spain; (J.J.H.-M.); (L.C.-S.)
| | - Miguel-Ángel García-Pérez
- Department of Genetics, Faculty of Biological Sciences, University of Valencia, Burjassot, and INCLIVA, Av Blasco Ibáñez 17, 46010 Valencia, Spain;
| | - Juan J. Tarín
- Department of Cellular Biology, Functional Biology and Physical Anthropology, Faculty of Biological Sciences, University of Valencia, Burjassot, 46100 Valencia, Spain;
| | - Antonio Cano
- Service of Obstetrics and Gynecology, Hospital Clínico Universitario—INCLIVA, Av Blasco Ibáñez 17, 46010 Valencia, Spain; (J.J.H.-M.); (L.C.-S.)
- Department of Pediatrics, Obstetrics and Gynecology, University of Valencia, Av Blasco Ibáñez 15, 46010 Valencia, Spain
- Correspondence: ; Tel.: +34-96-983087
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35
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Stevens Y, Winkens B, Jonkers D, Masclee A. The effect of olive leaf extract on cardiovascular health markers: a randomized placebo-controlled clinical trial. Eur J Nutr 2020; 60:2111-2120. [PMID: 33034707 PMCID: PMC8137474 DOI: 10.1007/s00394-020-02397-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/23/2020] [Indexed: 12/31/2022]
Abstract
Purpose Overweight and obesity are associated with many health problems, including cardiovascular disease (CVD). Evidence from previous studies has shown that extracts from olive leaves rich in olive phenolics are able to positively affect CVD risk factors, such as high blood pressure and dyslipidemia. The aim of this study was to investigate the effect of 8-week olive leaf extract (OLE) administration on blood lipid profiles in overweight/obese subjects with mildly elevated cholesterol levels. Methods In this randomized, double-blind, placebo-controlled study, 77 healthy adult overweight/obese subjects (aged 56 ± 10 years and BMI 29.0 ± 2.7 kg/m2) with total cholesterol levels of 5.0–8.0 mmol/L (5.9 ± 0.7 mmol/L) were randomly assigned to receive 500 mg of OLE (n = 39) or placebo (n = 38) for 8 weeks. In total, 74 subjects completed the entire study protocol. At baseline, after 4 weeks, and after 8 weeks of supplementation, blood lipid profiles, oxidized low-density lipoprotein (oxLDL), blood pressure, glucose, and insulin levels were assessed. In addition, liver function parameters were measured at baseline and after 8 weeks. Results OLE supplementation did not significantly affect blood lipid levels after 4 weeks or after 8 weeks compared to placebo (all p > 0.05). For oxLDL, blood pressure, glucose, and insulin levels and liver function parameters, also no statistically significant differences were found between the two intervention groups (all p > 0.05). Conclusions Blood lipid profiles were not significantly affected by 8 weeks OLE supplementation in overweight/obese subjects with mildly elevated cholesterol levels. Trial registered The trial has been registered at ClinicalTrials.gov (NCT02990637). Electronic supplementary material The online version of this article (10.1007/s00394-020-02397-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yala Stevens
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P. O. Box 616, 6200, Maastricht, The Netherlands. .,BioActor BV, Maastricht, The Netherlands.
| | - Bjorn Winkens
- Department of Methodology and Statistics, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
| | - Daisy Jonkers
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P. O. Box 616, 6200, Maastricht, The Netherlands
| | - Adrian Masclee
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, P. O. Box 616, 6200, Maastricht, The Netherlands
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Patti AM, Carruba G, Cicero AFG, Banach M, Nikolic D, Giglio RV, Terranova A, Soresi M, Giannitrapani L, Montalto G, Stoian AP, Banerjee Y, Rizvi AA, Toth PP, Rizzo M. Daily Use of Extra Virgin Olive Oil with High Oleocanthal Concentration Reduced Body Weight, Waist Circumference, Alanine Transaminase, Inflammatory Cytokines and Hepatic Steatosis in Subjects with the Metabolic Syndrome: A 2-Month Intervention Study. Metabolites 2020; 10:E392. [PMID: 33023123 PMCID: PMC7601817 DOI: 10.3390/metabo10100392] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/24/2020] [Accepted: 09/30/2020] [Indexed: 12/31/2022] Open
Abstract
Extra virgin olive oil (EVOO) intake is associated with reduced cardiovascular risk, and its phenolic compound oleocanthal (OC) has anti-oxidant and anti-inflammatory properties. The cardiometabolic effects of EVOO with a high OC concentration have not been fully elucidated. We administered EVOO with a high OC concentration daily to 23 subjects with the metabolic syndrome (MetS) and hepatic steatosis (15 men and 8 women, age: 60 ± 11 years) for 2 months. Anthropometric data, metabolic parameters, hepatic steatosis (by fatty liver index, FLI), abdominal fat distribution (by ultrasound), and pro- and anti-inflammatory cytokines were assessed before and after the intervention. EVOO supplementation was associated with a reduction in body weight, waist circumference, body mass index (BMI), alanine transaminase and FLI, as well as interleukin (IL)-6, IL-17A, tumor necrosis factor-α and IL-1B, while IL-10 increased. Maximum subcutaneous fat thickness (SFT max) also increased, with a concomitant decrease in the ratio of visceral fat layer thickness/SFT max. Correlation analysis revealed positive associations between changes in body weight and BMI and those in SFT max, along with an inverse association between changes in IL-6 and those in SFT max. In conclusion, ingestion of EVOO with a high OC concentration had beneficial effects on metabolic parameters, inflammatory cytokines and abdominal fat distribution in MetS subjects with hepatic steatosis, a category of patients at high cardiometabolic risk.
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Affiliation(s)
- Angelo M. Patti
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Giuseppe Carruba
- Division of Research and Internationalization, ARNAS-Civico Di Cristina e Benfratelli Hospital, 90127 Palermo, Italy;
| | - Arrigo F. G. Cicero
- Medical and Surgical Sciences Department, University of Bologna, 40138 Bologna, Italy;
| | - Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, 90-419 Lodz, Poland;
- Polish Mother’s Memorial Hospital Research Institute (PMMHRI) in Lodz, 93-338 Lodz, Poland
| | - Dragana Nikolic
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Rosaria V. Giglio
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Antonino Terranova
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Maurizio Soresi
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Lydia Giannitrapani
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Giuseppe Montalto
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
| | - Anca Pantea Stoian
- Department of Diabetes, Nutrition and Metabolic Diseases, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Yajnavalka Banerjee
- Mohammed Bin Rashid University of Medicine and Health Sciences, 505055 Dubai, UAE;
| | - Ali A. Rizvi
- Division of Endocrinology, Diabetes and Metabolism, University of South Carolina School of Medicine, Columbia, SC 29203, USA;
- Division of Endocrinology, Metabolism, and Lipids, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Peter P. Toth
- CGH Medical Center, Sterling, IL 61081, USA;
- School of Medicine, University of Illinois, Peoria, IL 60612, USA
- Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Manfredi Rizzo
- Department of Health Promotion Sciences Maternal and Infantile Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90127 Palermo, Italy; (A.M.P.); (R.V.G.); (A.T.); (M.S.); (L.G.); (G.M.); (M.R.)
- Division of Endocrinology, Diabetes and Metabolism, University of South Carolina School of Medicine, Columbia, SC 29203, USA;
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By-Products from Winemaking and Olive Mill Value Chains for the Enrichment of Refined Olive Oil: Technological Challenges and Nutraceutical Features. Foods 2020; 9:foods9101390. [PMID: 33019655 PMCID: PMC7601883 DOI: 10.3390/foods9101390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 12/17/2022] Open
Abstract
A growing body of literature is available about the valorization of food by-products to produce functional foods that combine the basic nutritional impact with the improvement of the health status of consumers. In this context, this study had two main objectives: (i) An innovative multistep extraction process for the production of a refined olive oil enriched with phenolic compounds (PE-ROO) extracted from olive pomace, olive leaves, or grape marc was presented and discussed. (ii) The most promising PE-ROOs were selected and utilized in in vitro and in vivo trials in order to determine their effectiveness in the management of high fat diet-induced-metabolic syndrome and oxidative stress in rats. The best results were obtained when olive leaves were used as source of phenols, regardless of the chemical composition of the solvent utilized for the extraction. Furthermore, while ethanol/hexane mixture was confirmed as a good solvent for the extraction of phenols compounds soluble in oil, the mix ROO/ethanol also showed a good extracting power from olive leaves. Besides, the ROO enriched with phenols extracted from olive leaves revealed an interesting beneficial effect to counteract high fat diet-induced-metabolic disorder and oxidative stress in rats, closely followed by ROO enriched by utilizing grape marc.
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Sarapis K, Thomas CJ, Hoskin J, George ES, Marx W, Mayr HL, Kennedy G, Pipingas A, Willcox JC, Prendergast LA, Itsiopoulos C, Moschonis G. The Effect of High Polyphenol Extra Virgin Olive Oil on Blood Pressure and Arterial Stiffness in Healthy Australian Adults: A Randomized, Controlled, Cross-Over Study. Nutrients 2020; 12:nu12082272. [PMID: 32751219 PMCID: PMC7468912 DOI: 10.3390/nu12082272] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Extra virgin olive oil (EVOO) is suggested to be cardioprotective, partly due to its high phenolic content. We investigated the effect of extra virgin high polyphenol olive oil (HPOO) versus low polyphenol olive oil (LPOO) on blood pressure (BP) and arterial stiffness in healthy Australian adults. In a double-blind, randomized, controlled cross-over trial, 50 participants (age 38.5 ± 13.9 years, 66% female) were randomized to consume 60 mL/day of either HPOO (360 mg/kg polyphenols) or LPOO (86 mg/kg polyphenols) for three weeks. Following a two-week washout period, participants crossed over to consume the alternate oil. Anthropometric data, peripheral BP, central BP and arterial stiffness were measured at baseline and follow up. No significant differences were observed in the changes from baseline to follow up between the two treatments. However, a significant decrease in peripheral and central systolic BP (SBP) by 2.5 mmHg (95% CI: −4.7 to −0.3) and 2.7 mmHg (95% CI: −4.7 to −0.6), respectively, was observed after HPOO consumption. Neither olive oil changed diastolic BP (DBP) or measures of arterial stiffness. The reductions in SBP after HPOO consumption provide evidence for a potentially widely accessible dietary intervention to prevent cardiovascular disease in a multiethnic population. Longer intervention studies and/or higher doses of EVOO polyphenols are warranted to elucidate the potential effect on DBP and arterial stiffness.
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Affiliation(s)
- Katerina Sarapis
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
| | - Colleen J. Thomas
- Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Melbourne 3086, Australia;
| | - Johanna Hoskin
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
| | - Elena S. George
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong 3220, Australia
| | - Wolfgang Marx
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
- Impact (the Institute for Mental and Physical Health and Clinical Translation), Food & Mood Centre, Deakin University, Geelong 3220, Australia
| | - Hannah L. Mayr
- School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (H.L.M.); (C.I.)
- Bond University Nutrition and Dietetics Research Group, Faculty of Health Sciences and Medicine, Bond University, Brisbane 4226, Australia
- Department of Nutrition and Dietetics, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Greg Kennedy
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne 3122, Australia; (G.K.); (A.P.)
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne 3122, Australia; (G.K.); (A.P.)
| | - Jane C. Willcox
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
| | - Luke A. Prendergast
- Department of Mathematics and Statistics, School of Engineering and Mathematical Sciences, La Trobe University, Melbourne 3086, Australia;
| | - Catherine Itsiopoulos
- School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (H.L.M.); (C.I.)
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
| | - George Moschonis
- Department of Dietetics, Nutrition and Sport, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne 3086, Australia; (K.S.); (J.H.); (E.S.G.); (W.M.); (J.C.W.)
- Correspondence: ; Tel.: +61-03-94793482
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Taamalli A, Feriani A, Lozano-Sanchez J, Ghazouani L, El Mufti A, Allagui MS, Segura-Carretero A, Mhamdi R, Arráez-Roman D. Potential Hepatoprotective Activity of Super Critical Carbon Dioxide Olive Leaf Extracts against CCl 4-Induced Liver Damage. Foods 2020; 9:foods9060804. [PMID: 32570798 PMCID: PMC7353501 DOI: 10.3390/foods9060804] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 12/23/2022] Open
Abstract
Virgin olive oil has demonstrated its effective activity against oxidative stress. However, data on the bioactive effect of olive leaves or their major constituents on the liver are scarce. The present research work was conducted to evaluate the hepatoprotective effects of supercritical carbon dioxide (SC-CO2) extracts from fresh and dried olive leaves on hepatotoxicity caused by carbon tetrachloride (CCl4) in rat models. For this purpose, healthy albino rats of 180–250 g weight were used. The assessment of biochemical markers was carried out on blood and liver tissue. Then, a histopathological study was carried out on liver tissue. The obtained results showed that fresh and dried olive leaf extracts ameliorate the perturbed biochemical parameters caused by CCl4 treatment. Furthermore, the results registered for the histopathological study are in accordance with the biochemical parameters and the protective capacity of SC-CO2 extracts against DNA damage, indicating that olive leaf extracts helped to improve liver fibrosis caused by CCl4 treatment.
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Affiliation(s)
- Amani Taamalli
- Department of Chemistry, College of Sciences, University of Hafr Al Batin, P.O. Box 1803, Hafr Al Batin 39524, Saudi Arabia;
- Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B.P.901, Hammam-Lif 2050, Tunisia;
| | - Anouar Feriani
- Research Unit of Macromolecular Biochemistry and Genetics, Faculty of Sciences of Gafsa, Gafsa 2112, Tunisia; (A.F.); (L.G.); (A.E.M.)
| | - Jesús Lozano-Sanchez
- Research and Development Functional Food Centre (CIDAF), Health Science Technological Park, Avenida del Conocimiento 37, Edificio BioRegión, 18016 Granada, Spain; (A.S.-C.); (D.A.-R.)
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
- Correspondence:
| | - Lakhdar Ghazouani
- Research Unit of Macromolecular Biochemistry and Genetics, Faculty of Sciences of Gafsa, Gafsa 2112, Tunisia; (A.F.); (L.G.); (A.E.M.)
| | - Afoua El Mufti
- Research Unit of Macromolecular Biochemistry and Genetics, Faculty of Sciences of Gafsa, Gafsa 2112, Tunisia; (A.F.); (L.G.); (A.E.M.)
| | - Mohamed Salah Allagui
- Laboratory of Animal Ecophysiology, Faculty of Sciences of Sfax, Sfax 3018, Tunisia;
| | - Antonio Segura-Carretero
- Research and Development Functional Food Centre (CIDAF), Health Science Technological Park, Avenida del Conocimiento 37, Edificio BioRegión, 18016 Granada, Spain; (A.S.-C.); (D.A.-R.)
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - Ridha Mhamdi
- Laboratoire de Biotechnologie de l’Olivier, Centre de Biotechnologie de Borj-Cedria, B.P.901, Hammam-Lif 2050, Tunisia;
| | - David Arráez-Roman
- Research and Development Functional Food Centre (CIDAF), Health Science Technological Park, Avenida del Conocimiento 37, Edificio BioRegión, 18016 Granada, Spain; (A.S.-C.); (D.A.-R.)
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
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40
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Schwingshackl L, Nitschke K, Zähringer J, Bischoff K, Lohner S, Torbahn G, Schlesinger S, Schmucker C, Meerpohl JJ. Impact of Meal Frequency on Anthropometric Outcomes: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials. Adv Nutr 2020; 11:1108-1122. [PMID: 32437566 PMCID: PMC7490164 DOI: 10.1093/advances/nmaa056] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/03/2020] [Accepted: 04/21/2020] [Indexed: 12/23/2022] Open
Abstract
The relation between meal frequency and measures of obesity is inconclusive. Therefore, this systematic review and network meta-analysis (NMA) set out to compare the isocaloric effects of different meal frequencies on anthropometric outcomes and energy intake (EI). A systematic literature search was conducted in 3 electronic databases (Medline, Cochrane Library, Web of Science; search date, 11 March 2019). Randomized controlled trials (RCTs) were included with ≥2 wk intervention duration comparing any 2 of the eligible isocaloric meal frequencies (i.e., 1 to ≥8 meals/d). Random-effects NMA was performed for 4 outcomes [body weight (BW), waist circumference (WC), fat mass (FM), and EI], and surface under the cumulative ranking curve (SUCRA) was estimated using a frequentist approach (P-score: value is between 0 and 1). Twenty-two RCTs with 647 participants were included. Our results suggest that 2 meals/d probably slightly reduces BW compared with 3 meals/d [mean difference (MD): -1.02 kg; 95% CI: -1.70, -0.35 kg) or 6 meals/d (MD: -1.29 kg; 95% CI: -1.74, -0.84 kg; moderate certainty of evidence). We are uncertain whether 1 or 2 meals/d reduces BW compared with ≥8 meals/d (MD1 meal/d vs. ≥8 meals/d: -2.25 kg; 95% CI: -5.13, 0.63 kg; MD2 meals/d vs. ≥8 meals/d: -1.32 kg; 95% CI: -2.19, -0.45 kg) and whether 1 meal/d probably reduces FM compared with 3 meals/d (MD: -1.84 kg; 95% CI: -3.72, 0.05 kg; very low certainty of evidence). Two meals per day compared with 6 meals/d probably reduce WC (MD: -3.77 cm; 95% CI: -4.68, -2.86 cm; moderate certainty of evidence). One meal per day was ranked as the best frequency for reducing BW (P-score: 0.81), followed by 2 meals/d (P-score: 0.74), whereas 2 meals/d performed best for WC (P-score: 0.96). EI was not affected by meal frequency. In conclusion, our findings indicate that there is little robust evidence that reducing meal frequency is beneficial.
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Affiliation(s)
- Lukas Schwingshackl
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Address correspondence to LS (e-mail: )
| | - Kai Nitschke
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jasmin Zähringer
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Karin Bischoff
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Szimonetta Lohner
- Cochrane Hungary, Clinical Center of the University of Pécs, Medical School, University of Pécs, Pécs, Hungary
| | - Gabriel Torbahn
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nürnberg, Germany
| | - Sabrina Schlesinger
- Institute for Biometrics and Epidemiology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christine Schmucker
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Joerg J Meerpohl
- Institute for Evidence in Medicine, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Cochrane Germany, Cochrane Germany Foundation, Freiburg, Germany
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41
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Effect of a Combination of Citrus Flavones and Flavanones and Olive Polyphenols for the Reduction of Cardiovascular Disease Risk: An Exploratory Randomized, Double-Blind, Placebo-Controlled Study in Healthy Subjects. Nutrients 2020; 12:nu12051475. [PMID: 32438719 PMCID: PMC7284884 DOI: 10.3390/nu12051475] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/12/2020] [Accepted: 05/16/2020] [Indexed: 12/12/2022] Open
Abstract
A single-center, randomized, double-blind controlled trial was conducted to assess the efficacy of a food supplement based on a combination of grapefruit, bitter orange, and olive extracts administered for eight weeks (n = 51) versus placebo (n = 45) on reduction of cardiovascular risk in healthy volunteers. Study variables included flow-mediated vasodilation (FMD), blood pressure (BP), lipid profile, thrombotic status, oxidative stress biomarkers, inflammation-related biomarkers, anthropometric variables, quality of life, and physical activity. The per-protocol data set was analyzed. In the active product group, there were statistically significant within-group differences at eight weeks as compared with baseline in FMD, systolic and diastolic BP, total cholesterol, LDL-C, LDL-oxidase, oxidized/reduced glutathione ratio, protein carbonyl, and IL-6. Significant between-group differences in these variables were also found. Significant changes in anthropometric variables and quality of life were not observed in the study groups. Changes in the level of physical activity were not recorded. Treatment with the active product was well tolerated. All these findings, taken together, support a beneficial effect of supplementation with a mixture of grapefruit, bitter orange fruits, and olive leaf extracts on underlying mechanisms that may interact each other to decrease the cardiovascular risk in healthy people.
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42
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Irwin JC, Fenning AS, Vella RK. Olive oil should not be used as a vehicle for administrating bioactive lipids in cardiovascular studies. Nutr Metab Cardiovasc Dis 2020; 30:847-848. [PMID: 32127331 DOI: 10.1016/j.numecd.2020.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/01/2020] [Accepted: 02/12/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Jordon C Irwin
- School of Health, Medical and Applied Sciences, Central Queensland University, Bruce Highway, North Rockhampton, Queensland, 4702, Australia.
| | - Andrew S Fenning
- School of Health, Medical and Applied Sciences, Central Queensland University, Bruce Highway, North Rockhampton, Queensland, 4702, Australia
| | - Rebecca K Vella
- School of Health, Medical and Applied Sciences, Central Queensland University, Bruce Highway, North Rockhampton, Queensland, 4702, Australia
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43
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Franconi F, Campesi I, Romani A. Is Extra Virgin Olive Oil an Ally for Women's and Men's Cardiovascular Health? Cardiovasc Ther 2020; 2020:6719301. [PMID: 32454893 PMCID: PMC7212338 DOI: 10.1155/2020/6719301] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/04/2020] [Indexed: 02/06/2023] Open
Abstract
Noncommunicable diseases are long-lasting and slowly progressive and are the leading causes of death and disability. They include cardiovascular diseases (CVD) and diabetes mellitus (DM) that are rising worldwide, with CVD being the leading cause of death in developed countries. Thus, there is a need to find new preventive and therapeutic approaches. Polyphenols seem to have cardioprotective properties; among them, polyphenols and/or minor polar compounds of extra virgin olive oil (EVOO) are attracting special interest. In consideration of numerous sex differences present in CVD and DM, in this narrative review, we applied "gender glasses." Globally, it emerges that olive oil and its derivatives exert some anti-inflammatory and antioxidant effects, modulate glucose metabolism, and ameliorate endothelial dysfunction. However, as in prescription drugs, also in this case there is an important gender bias because the majority of the preclinical studies are performed on male animals, and the sex of donors of cells is not often known; thus a sex/gender bias characterizes preclinical research. There are numerous clinical studies that seem to suggest the benefits of EVOO and its derivatives in CVD; however, these studies have numerous limitations, presenting also a considerable heterogeneity across the interventions. Among limitations, one of the most relevant in the era of personalized medicine, is the non-attention versus women that are few and, also when they are enrolled, sex analysis is lacking. Therefore, in our opinion, it is time to perform more long, extensive and lessheterogeneous trials enrolling both women and men.
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Affiliation(s)
- Flavia Franconi
- Laboratorio Nazionale sulla Farmacologia e Medicina di Genere, Istituto Nazionale Biostrutture Biosistemi, 07100 Sassari, Italy
| | - Ilaria Campesi
- Laboratorio Nazionale sulla Farmacologia e Medicina di Genere, Istituto Nazionale Biostrutture Biosistemi, 07100 Sassari, Italy
- Dipartimento di Scienze Biomediche, Università Degli Studi di Sassari, 07100 Sassari, Italy
| | - Annalisa Romani
- Laboratorio PHYTOLAB (Pharmaceutical, Cosmetic, Food Supplement Technology and Analysis), DiSIA Università Degli Studi di Firenze, 50019 Florence, Italy
- Laboratorio di Qualità Delle Merci e Affidabilità di Prodotto, Università Degli Studi di Firenze, 59100 Florence, Italy
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44
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Lapuente M, Estruch R, Shahbaz M, Casas R. Relation of Fruits and Vegetables with Major Cardiometabolic Risk Factors, Markers of Oxidation, and Inflammation. Nutrients 2019; 11:E2381. [PMID: 31590420 PMCID: PMC6835769 DOI: 10.3390/nu11102381] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 12/15/2022] Open
Abstract
Noncommunicable diseases (NCDs) are considered to be the leading cause of death worldwide. Inadequate fruit and vegetable intake have been recognized as a risk factor for almost all NCDs (type 2 diabetes mellitus, cancer, and cardiovascular and neurodegenerative diseases). The main aim of this review is to examine the possible protective effect that fruit and vegetable consumption or their bioactive compounds may have on the development of NCDs such as atherosclerosis. The accumulated evidence on the protective effects of adequate consumption of fruits and vegetables in some cases, or the lack of evidence in others, are summarized in the present review. The main conclusion of this review is that well-designed, large-scale, long-term studies are needed to truly understand the role fruit and vegetable consumption or their bioactive compounds have in atherosclerosis.
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Affiliation(s)
- Maria Lapuente
- Department of Internal Medicine, Hospital Clinic, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), University of Barcelona, Villarroel, 170, Barcelona 08036, Spain.
| | - Ramon Estruch
- Department of Internal Medicine, Hospital Clinic, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), University of Barcelona, Villarroel, 170, Barcelona 08036, Spain.
- CIBER 06/03: Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid 28029, Spain.
| | - Mana Shahbaz
- Department of Internal Medicine, Hospital Clinic, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), University of Barcelona, Villarroel, 170, Barcelona 08036, Spain.
| | - Rosa Casas
- Department of Internal Medicine, Hospital Clinic, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), University of Barcelona, Villarroel, 170, Barcelona 08036, Spain.
- CIBER 06/03: Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid 28029, Spain.
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45
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Gaforio JJ, Visioli F, Alarcón-de-la-Lastra C, Castañer O, Delgado-Rodríguez M, Fitó M, Hernández AF, Huertas JR, Martínez-González MA, Menendez JA, Osada JDL, Papadaki A, Parrón T, Pereira JE, Rosillo MA, Sánchez-Quesada C, Schwingshackl L, Toledo E, Tsatsakis AM. Virgin Olive Oil and Health: Summary of the III International Conference on Virgin Olive Oil and Health Consensus Report, JAEN (Spain) 2018. Nutrients 2019; 11:E2039. [PMID: 31480506 PMCID: PMC6770785 DOI: 10.3390/nu11092039] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/21/2019] [Accepted: 08/28/2019] [Indexed: 12/21/2022] Open
Abstract
The Mediterranean diet is considered as the foremost dietary regimen and its adoption is associated with the prevention of degenerative diseases and an extended longevity. The preeminent features of the Mediterranean diet have been agreed upon and the consumption of olive oil stands out as the most peculiar one. Indeed, the use of olive oil as the nearly exclusive dietary fat is what mostly characterizes the Mediterranean area. Plenty of epidemiological studies have correlated that the consumption of olive oil was associated with better overall health. Indeed, extra virgin olive oil contains (poly)phenolic compounds that are being actively investigated for their purported biological and pharma-nutritional properties. On 18 and 19 May 2018, several experts convened in Jaen (Spain) to discuss the most recent research on the benefits of olive oil and its components. We reported a summary of that meeting (reviewing several topics related to olive oil, not limited to health) and concluded that substantial evidence is accruing to support the widespread opinion that extra virgin olive oil should, indeed, be the fat of choice when it comes to human health and sustainable agronomy.
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Affiliation(s)
- José J Gaforio
- Center for Advanced Studies in Olive Grove and Olive Oils, University of Jaen, 23071 Jaén, Spain.
- Department of Health Sciences, Faculty of Experimental Sciences, University of Jaén, 23071 Jaén, Spain.
- Agri-Food Campus of International Excellence (ceiA3), 14071 Córdoba, Spain.
- CIBER Epidemiología y Salud Pública (CIBER-ESP), Instituto de Salud Carlos III, 28029 Madrid, Spain.
| | - Francesco Visioli
- Department of Molecular Medicine, University of Padova, 35121 Padova, Italy
- Laboratory of Functional Foods, Instituto Madrileño de Estudios Avanzados (IMDEA)-Alimentación, CEI UAM + CSIC, 28049 Madrid, Spain
| | | | - Olga Castañer
- Cardiovascular Risk and Nutrition Research Group (CARIN), Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain
- CIBER Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Miguel Delgado-Rodríguez
- Center for Advanced Studies in Olive Grove and Olive Oils, University of Jaen, 23071 Jaén, Spain
- Department of Health Sciences, Faculty of Experimental Sciences, University of Jaén, 23071 Jaén, Spain
- CIBER Epidemiología y Salud Pública (CIBER-ESP), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Monserrat Fitó
- Cardiovascular Risk and Nutrition Research Group (CARIN), Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain
- CIBER Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Antonio F Hernández
- Department of Legal Medicine and Toxicology, University of Granada School of Medicine, 18016 Granada, Spain
| | - Jesús R Huertas
- Institute of Nutrition and Food Technology, Biomedical Research Centre, Department of Physiology, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain
| | - Miguel A Martínez-González
- CIBER Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Preventive Medicine and Public Health-IdiSNA, University of Navarra, 31008 Pamplona, Spain
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA 02115, USA
| | - Javier A Menendez
- ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, 17007 Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), 17190 Girona, Spain
| | - Jesús de la Osada
- CIBER Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Biochemistry, Molecular and Cellular Biology, Veterinary Faculty, University of Zaragoza, 50013 Zaragoza, Spain
| | - Angeliki Papadaki
- Centre for Exercise, Nutrition and Health Sciences, School for Policy Studies, University of Bristol, Bristol BS8 1TZ, UK
| | - Tesifón Parrón
- Departamento de Enfermería, Fisioterapia y Medicina, Universidad de Almería, 04120 Almería, Spain
| | - Jorge E Pereira
- Facultad de Agronomía, Universidad de la República, 12900 Montevideo, Uruguay
| | - María A Rosillo
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, 41012 Sevilla, Spain
| | - Cristina Sánchez-Quesada
- Center for Advanced Studies in Olive Grove and Olive Oils, University of Jaen, 23071 Jaén, Spain
- Department of Health Sciences, Faculty of Experimental Sciences, University of Jaén, 23071 Jaén, Spain
| | - Lukas Schwingshackl
- Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, 79110 Freiburg, Germany
| | - Estefanía Toledo
- CIBER Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Preventive Medicine and Public Health-IdiSNA, University of Navarra, 31008 Pamplona, Spain
| | - Aristidis M Tsatsakis
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
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