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Fratta Pasini AM, Cominacini L. Potential Benefits of Antioxidant Phytochemicals on Endogenous Antioxidants Defences in Chronic Diseases. Antioxidants (Basel) 2023; 12:antiox12040890. [PMID: 37107265 PMCID: PMC10135316 DOI: 10.3390/antiox12040890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
Chronic diseases and cancer are worldwide health problems which result in death and disability for millions of people [...]
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Affiliation(s)
- Anna Maria Fratta Pasini
- Department of Medicine, Section of Internal Medicine D, University of Verona, 37134 Verona, Italy
| | - Luciano Cominacini
- Department of Medicine, Section of Internal Medicine D, University of Verona, 37134 Verona, Italy
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2
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Yu EYW, Ren Z, Mehrkanoon S, Stehouwer CDA, van Greevenbroek MMJ, Eussen SJPM, Zeegers MP, Wesselius A. Plasma metabolomic profiling of dietary patterns associated with glucose metabolism status: The Maastricht Study. BMC Med 2022; 20:450. [PMID: 36414942 PMCID: PMC9682653 DOI: 10.1186/s12916-022-02653-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 11/07/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Glucose metabolism has been reported to be affected by dietary patterns, while the underlying mechanisms involved remain unclear. This study aimed to investigate the potential mediation role of circulating metabolites in relation to dietary patterns for prediabetes and type 2 diabetes. METHODS Data was derived from The Maastricht Study that comprised of 3441 participants (mean age of 60 years) with 28% type 2 diabetes patients by design. Dietary patterns were assessed using a validated food frequency questionnaire (FFQ), and the glucose metabolism status (GMS) was defined according to WHO guidelines. Both cross-sectional and prospective analyses were performed for the circulating metabolome to investigate their associations and mediations with responses to dietary patterns and GMS. RESULTS Among 226 eligible metabolite measures obtained from targeted metabolomics, 14 were identified to be associated and mediated with three dietary patterns (i.e. Mediterranean Diet (MED), Dietary Approaches to Stop Hypertension Diet (DASH), and Dutch Healthy Diet (DHD)) and overall GMS. Of these, the mediation effects of 5 metabolite measures were consistent for all three dietary patterns and GMS. Based on a 7-year follow-up, a decreased risk for apolipoprotein A1 (APOA1) and docosahexaenoic acid (DHA) (RR 0.60, 95% CI 0.55, 0.65; RR 0.89, 95% CI 0.83, 0.97, respectively) but an increased risk for ratio of ω-6 to ω-3 fatty acids (RR 1.29, 95% CI 1.05, 1.43) of type 2 diabetes were observed from prediabetes, while APOA1 showed a decreased risk of type 2 diabetes from normal glucose metabolism (NGM; RR 0.82, 95% CI 0.75, 0.89). CONCLUSIONS In summary, this study suggests that adherence to a healthy dietary pattern (i.e. MED, DASH, or DHD) could affect the GMS through circulating metabolites, which provides novel insights into understanding the biological mechanisms of diet on glucose metabolism and leads to facilitating prevention strategy for type 2 diabetes.
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Affiliation(s)
- Evan Yi-Wen Yu
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, Department of Epidemiology & Biostatistics, School of Public Health, Southeast University, Nanjing, 210009, China. .,Department of Epidemiology, CAPHRI Care and Public Health Research Institute, Maastricht University, Universiteitssingel 40 (Room C5.570), Maastricht, 6229ER, The Netherlands.
| | - Zhewen Ren
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, Maastricht University, Universiteitssingel 40 (Room C5.570), Maastricht, 6229ER, The Netherlands
| | - Siamak Mehrkanoon
- Department of Data Science and Knowledge Engineering, Maastricht University, Maastricht, 6229ER, The Netherlands
| | - Coen D A Stehouwer
- CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, 6229ER, The Netherlands.,Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, 6229HX, The Netherlands
| | - Marleen M J van Greevenbroek
- CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, 6229ER, The Netherlands.,Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, 6229HX, The Netherlands
| | - Simone J P M Eussen
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, Maastricht University, Universiteitssingel 40 (Room C5.570), Maastricht, 6229ER, The Netherlands.,CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, 6229ER, The Netherlands
| | - Maurice P Zeegers
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, Maastricht University, Universiteitssingel 40 (Room C5.570), Maastricht, 6229ER, The Netherlands.,School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.564), Maastricht, 6229ER, The Netherlands
| | - Anke Wesselius
- Department of Epidemiology, CAPHRI Care and Public Health Research Institute, Maastricht University, Universiteitssingel 40 (Room C5.570), Maastricht, 6229ER, The Netherlands. .,School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.564), Maastricht, 6229ER, The Netherlands.
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3
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From Foods to Chemotherapeutics: The Antioxidant Potential of Dietary Phytochemicals. Processes (Basel) 2022. [DOI: 10.3390/pr10061222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Food plants have been recognized for their medicinal properties for millennia, a concept supported by epidemiological studies indicating long-term health benefits for people consuming greater amounts of fruits and vegetables. As our technology and instrumentation advance, researchers have the ability to identify promising phytochemicals, and examine their potential benefits, or detriments, to human health. While results from trials investigating single chemical supplementation have sometimes produced negative health results, studies investigating the synergistic action of phytochemicals—either within our diet or as an adjuvant to radiation or chemotherapy—appear promising. Utilizing phytochemicals as synergistic agents may lower the chemotherapeutic doses needed to incur physiological results, while also using chemicals with fewer toxic effects. This review investigates a variety of plant-produced chemicals humans typically ingest, their impacts on overall health patterns, molecular mechanisms associated with their health impacts, and the potential of their synergistic use for therapeutic purposes.
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Chen X, Deng Z, Zheng L, Zhang B, Luo T, Li H. Interaction between Flavonoids and Carotenoids on Ameliorating Oxidative Stress and Cellular Uptake in Different Cells. Foods 2021; 10:foods10123096. [PMID: 34945647 PMCID: PMC8701200 DOI: 10.3390/foods10123096] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/27/2021] [Accepted: 12/07/2021] [Indexed: 02/07/2023] Open
Abstract
Flavonoids (quercetin, luteolin) and carotenoids (lycopene, lutein) were combined at different molecular ratios in a total concentration of 8 μM to investigate their antioxidant interactions. Cellular uptake of carotenoids, the expression of carotenoid transporters, the ROS scavenging ability, and antioxidant enzymes activities were compared in HUVEC, Caco-2, and L-02 cells. Combinations with flavonoids in the majority showed stronger antioxidant activity. Lycopene combined with quercetin at ratio 1:5 showed stronger ROS scavenging activities, increased 18, 12, and 12 Cellular antioxidant activity (CAA) units in HUVEC, Caco-2, and L-02 cells, respectively, and promoted SOD and CAT activities than individual component. The cell uptake of carotenoids was enhanced by flavonoids in antioxidant synergistic groups, while dampened by flavonoids in antagonistic groups in HUVEC cells. The synergistic group (lycopene:quercetin = 1:5) increased lycopene uptake by 271%, while antagonistic group (lutein:quercetin = 5:1) decreased lutein uptake by 17%. Flavonoids modulated the effects of carotenoids on the expression of active transporters scavenger receptor class B type I (SR-BI) or Niemann-Pick C1-like 1 (NPC1L1). The synergistic group (lycopene:quercetin = 1:5) increased the expression of SR-BI compared to individual lycopene treatment in HUVEC and Caco-2 cells. Thus, a diet rich in both flavonoids and lycopene possesses a great antioxidant activity, especially if a higher amount of flavonoids is included.
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Affiliation(s)
- Xuan Chen
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
| | - Zeyuan Deng
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
- Institute for Advanced Study, University of Nanchang, Nanchang 330031, China
| | - Liufeng Zheng
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
| | - Bing Zhang
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
| | - Ting Luo
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
| | - Hongyan Li
- State Key Laboratory of Food Science and Technology, University of Nanchang, Nanchang 330047, China; (X.C.); (Z.D.); (L.Z.); (B.Z.); (T.L.)
- Correspondence: ; Tel.: +86-791-88314447-8226; Fax: +86-791-88304402
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Shahidi F, Pinaffi-Langley ACC, Fuentes J, Speisky H, de Camargo AC. Vitamin E as an essential micronutrient for human health: Common, novel, and unexplored dietary sources. Free Radic Biol Med 2021; 176:312-321. [PMID: 34610363 DOI: 10.1016/j.freeradbiomed.2021.09.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 01/18/2023]
Abstract
Vitamin E comprises a group of vitamers that includes tocopherols and tocotrienols. They occur in four homologues according to the number and position of methyl groups attached to the chromanol ring. Vitamin E, a liposoluble antioxidant, may participate as an adjuvant in the prevention and treatment of cardiovascular, neurological, and aging-related diseases. Furthermore, vitamin E has applications in the food industry as a natural additive. In this contribution, the most recent information on the dietary sources of vitamin E, including common, novel, and unexplored sources, is presented. Common edible oils, such as those of corn, olive, palm, rice bran, and peanut, represent the most prominent sources of vitamin E. However, specialty and underutilized oils such as those obtained from tree nuts, fruit seeds, and by-products, emerge as novel sources of this important micronutrient. Complementary studies should examine the tocotrienol content of vitamin E dietary sources to better understand the different biological functions of these vitamers.
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Affiliation(s)
- Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, A1B3X9 Canada.
| | | | - Jocelyn Fuentes
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago, Chile; School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Hernán Speisky
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago, Chile
| | - Adriano Costa de Camargo
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago, Chile.
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6
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Thompson HJ, Levitt JO, McGinley JN, Chandler P, Guenther PM, Huybrechts I, Playdon MC. Measuring Dietary Botanical Diversity as a Proxy for Phytochemical Exposure. Nutrients 2021; 13:1295. [PMID: 33919845 PMCID: PMC8070776 DOI: 10.3390/nu13041295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/31/2021] [Accepted: 04/08/2021] [Indexed: 01/04/2023] Open
Abstract
The study of natural plant molecules and their medicinal properties, pharmacognosy, provides a taxonomy for botanical families that represent diverse chemical groupings with potentially distinct functions in relation to human health. Yet, this reservoir of knowledge has not been systematically applied to elucidating the role of patterns of plant food consumption on gut microbial ecology and function. All chemical classes of dietary phytochemicals can affect the composition of the microbes that colonize the gut and their function. In turn, the gut microbiome affects the host via multiple mechanisms including gut barrier function, immune function, satiety and taste regulation and the activity of biological signaling pathways that influence health and disease. Herein, we report the development of a botanical diversity index (BDI) to evaluate plant food consumption as a novel metric for identifying and quantifying phytochemicals to which an individual is exposed. A rationale is advanced for using the BDI to investigate how plant food diversity impacts gut microbial ecology and functionality.
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Affiliation(s)
- Henry J. Thompson
- Cancer Prevention Laboratory, Colorado State University, Fort Collins, CO 80523, USA;
| | - Jack O. Levitt
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA; (J.O.L.); (P.M.G.)
- Cancer Control and Population Sciences Program, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA
| | - John N. McGinley
- Cancer Prevention Laboratory, Colorado State University, Fort Collins, CO 80523, USA;
| | - Paulette Chandler
- Department of Medicine, Harvard Medical School & Brigham and Women’s Hospital, Boston, MA 02115, USA;
| | - Patricia M. Guenther
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA; (J.O.L.); (P.M.G.)
| | - Inge Huybrechts
- Nutritional Epidemiology Group, International Agency for Research on Cancer, World Health Organization, CEDEX 08, 69372 Lyon, France;
| | - Mary C. Playdon
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA; (J.O.L.); (P.M.G.)
- Cancer Control and Population Sciences Program, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA
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Chen X, Li H, Zhang B, Deng Z. The synergistic and antagonistic antioxidant interactions of dietary phytochemical combinations. Crit Rev Food Sci Nutr 2021; 62:5658-5677. [PMID: 33612011 DOI: 10.1080/10408398.2021.1888693] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The frequent intake of whole foods and dietary food variety is recommended due to their health benefits, such as prevention of multiple chronic diseases, including cancer, Alzheimer's disease, cardiovascular diseases, and type 2 diabetes mellitus. Often, consuming whole fruits or vegetables showed the enhanced effects than consuming the individual dietary supplement from natural products, which is widely explained by the interactive effects of co-existing phytochemicals in whole foods. Although research relevant to interactive effects among the bioactive compounds mounted up, the mechanism of interaction is still not clear. Especially, biological influence factors such as bioavailability are often neglected. The present review summarizes the progress on the synergistic and antagonistic effects of dietary phytochemicals, the evaluating models for antioxidant interactions, and the possible interaction mechanisms both in vitro and in vivo, and with an emphasis on biological-related molecular mechanisms of phytochemicals. The research on the interaction mechanism is of value for guiding how to take advantage of synergistic effects and avoid antagonistic effects in daily diets or phytochemical-based treatments for preventing chronic diseases.
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Affiliation(s)
- Xuan Chen
- State Key Laboratory of Food Science and Technology, University of Nanchang, Jiangxi, China Nanchang
| | - Hongyan Li
- State Key Laboratory of Food Science and Technology, University of Nanchang, Jiangxi, China Nanchang
| | - Bing Zhang
- State Key Laboratory of Food Science and Technology, University of Nanchang, Jiangxi, China Nanchang
| | - Zeyuan Deng
- State Key Laboratory of Food Science and Technology, University of Nanchang, Jiangxi, China Nanchang.,Institute for Advanced Study, University of Nanchang, Nanchang, Jiangxi, China
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Bohn T. Carotenoids and Markers of Oxidative Stress in Human Observational Studies and Intervention Trials: Implications for Chronic Diseases. Antioxidants (Basel) 2019; 8:E179. [PMID: 31213029 PMCID: PMC6616644 DOI: 10.3390/antiox8060179] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 01/08/2023] Open
Abstract
Carotenoids include C30, C40 and C50 terpenoid-based molecules, many of which constitute coloured pigments. However, >1100 of these are known to occur in nature and only about a dozen are known to play a role in our daily diet. Carotenoids have received much attention due to their proposed health benefits, including reducing the incidence of chronic diseases, such as cardiovascular disease and diabetes. Many of these diseases are characterized by chronic inflammation co-occurring with oxidative stress, characterized by, for example, enhanced plasma F2-isoprostane concentrations, malondialdehyde, and 8-hydroxyguanosine. Though carotenoids can act as direct antioxidants, quenching, for example, singlet oxygen and peroxide radicals, an important biological function appears to rest also in the activation of the body's own antioxidant defence system, related to superoxide-dismutase, catalase, and glutathione-peroxidase expression, likely due to the interaction with transcription factors, such as nuclear-factor erythroid 2-related factor 2 (Nrf-2). Though mostly based on small-scale and observational studies which do not allow for drawing conclusions regarding causality, several supplementation trials with isolated carotenoids or food items suggest positive health effects. However, negative effects have also been reported, especially regarding beta-carotene for smokers. This review is aimed at summarizing the results from human observational studies/intervention trials targeting carotenoids in relation to chronic diseases characterized by oxidative stress and markers thereof.
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Affiliation(s)
- Torsten Bohn
- Department of Population Health, Luxembourg Institute of Health, L-1445 Strassen, Luxembourg.
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9
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A Review of the Science of Colorful, Plant-Based Food and Practical Strategies for "Eating the Rainbow". J Nutr Metab 2019; 2019:2125070. [PMID: 33414957 PMCID: PMC7770496 DOI: 10.1155/2019/2125070] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 03/27/2019] [Accepted: 04/17/2019] [Indexed: 01/10/2023] Open
Abstract
Over the past decades, thousands of published studies have amassed supporting recommendations to consume fruits and vegetables for physiological and psychological health. Newer research has emerged to suggest that these plant-based foods contain a plethora of not only vitamins and minerals, but perhaps, most importantly, phytonutrients. These phytonutrients have known pleiotropic effects on cellular structure and function, ultimately resulting in the modulation of protein kinases and subsequent epigenetic modification in a manner that leads to improved outcomes. Even though eating fruits and vegetables is a well-known feature of a healthy dietary pattern, population intakes continue to be below federal recommendations. To encourage consumers to include fruits and vegetables into their diet, an “eat by color” approach is proposed in this review. Although each individual food may have numerous effects based on its constituents, the goal of this simplified approach was to identify general patterns of benefits based on the preponderance of scientific data and known mechanisms of food-based constituents. It is suggested that such a consumer-oriented categorization of these plant-based foods may lead to greater recognition of their importance in the daily diet throughout the lifespan. Other adjunctive strategies to heighten awareness of fruits and vegetables are discussed.
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Improved Preventive Effects of Combined Bioactive Compounds Present in Different Blueberry Varieties as Compared to Single Phytochemicals. Nutrients 2018; 11:nu11010061. [PMID: 30597948 PMCID: PMC6356906 DOI: 10.3390/nu11010061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/18/2018] [Accepted: 12/24/2018] [Indexed: 11/17/2022] Open
Abstract
Blueberries contain many different phytochemicals which might be responsible for their disease preventive properties. In a previously conducted human dietary intervention study, we showed that a 4-week intervention with blueberry–apple juice protected the participants against oxidative stress and modulated expression of genes involved in different genetic pathways contributing to the antioxidant response. The present study investigates the effect of different blueberry varieties (Elliot, Draper, Bluecrop, and Aurora, and the blueberry–apple juice from our previous human dietary intervention study), and four different single compounds (vitamin C, peonidin, cyanidin, and quercetin) on antioxidant capacity and gene expression changes in colonic cells in vitro, and compares the outcome with the earlier in vivo findings. The results demonstrate that all blueberry varieties as well as the blueberry–apple juice were more effective in reducing oxidative stress as compared to the single compounds (e.g., DNA strand break reduction: EC50: Elliot 8.3 mg/mL, Aurora and Draper 11.9 mg/mL, blueberry–apple juice 12.3 mg/mL, and Bluecrop 12.7 mg/mL; single compounds). In addition, the gene expression profiles (consisting of 18 selected genes from the in vivo study) induced by the blueberry varieties were more similar to the profile of the human intervention study (range 44–78%). The blueberry variety Elliot showed the strongest and most similar effects, almost 80% of gene expression modulations were similar compared to the in vivo results. From the single compounds (range 17–44%), quercetin induced the most comparable gene expression changes, i.e., 44%. This approach could be useful in agriculture for identifying crop varieties containing combinations of phytochemicals which show optimal preventive capacities.
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Fardet A, Rock E. Perspective: Reductionist Nutrition Research Has Meaning Only within the Framework of Holistic and Ethical Thinking. Adv Nutr 2018; 9:655-670. [PMID: 30204836 PMCID: PMC6247347 DOI: 10.1093/advances/nmy044] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Today, it seems that nutrition is in a state of great confusion, especially for the general public. For decades, some nutrients (e.g., cholesterol, saturated fats, sugars, gluten, salt) and food groups (e.g., dairy, cereals, meats) have been regularly denigrated. In this position paper, we hypothesize that such a state of confusion is mainly the result of the reductionist paradigm applied to nutrition research for more than a century, and by being pushed to its extreme, this perspective has led to accusations about some nutrients and foods. However, the real issue is about foods taken as a whole and therefore about their degree of processing, which affects both the food matrix and composition. Indeed, we eat whole foods, not nutrients. Therefore, the objectives of this article are to emphasize the need for more holistic approaches in nutrition to preserve our health, animal welfare, and planet. We propose to first redefine the food health potential on a holistic basis and then to show that reductionism and holism are interconnected approaches that should coexist. Then, we try to explain how extreme reductionism has been disconnected from reality and ethical considerations and has ultimately led to environmental degradation and loss of biodiversity, notably through very specific crops, and to an increased prevalence of chronic diseases. Furthermore, to address the confusion of the general public and to simplify nutritional messages, we propose 3 holistic golden rules based on scientific evidence to protect human health, animal welfare, and the environment (climate and biodiversity). Finally, we try to show how these 3 rules can be easily applied worldwide while respecting the environment, cultural traditions, and heritage.
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Affiliation(s)
- Anthony Fardet
- Université Clermont Auvergne, INRA, UNH, Unité de Nutrition Humaine, CRNH Auvergne, Clermont-Ferrand, France
| | - Edmond Rock
- Université Clermont Auvergne, INRA, UNH, Unité de Nutrition Humaine, CRNH Auvergne, Clermont-Ferrand, France
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12
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Vegetable Diversity, Injurious Falls, and Fracture Risk in Older Women: A Prospective Cohort Study. Nutrients 2018; 10:nu10081081. [PMID: 30104494 PMCID: PMC6115713 DOI: 10.3390/nu10081081] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/03/2018] [Accepted: 08/08/2018] [Indexed: 01/21/2023] Open
Abstract
The importance of vegetable diversity for the risk of falling and fractures is unclear. Our objective was to examine the relationship between vegetable diversity with injurious falling and fractures leading to hospitalization in a prospective cohort of older Australian women (n = 1429, ≥70 years). Vegetable diversity was quantified by assessing the number of different vegetables consumed daily. Vegetable intake (75 g servings/day) was estimated using a validated food frequency questionnaire at baseline (1998). Over 14.5 years, injurious falls (events = 568, 39.7%), and fractures (events = 404, 28.3%) were captured using linked health records. In multivariable-adjusted Cox regression models, women with greater vegetable diversity (per increase in one different vegetable/day) had lower relative hazards for falls (8%; p = 0.02) and fractures (9%; p = 0.03). A significant interaction between daily vegetable diversity (number/day) and total vegetable intake (75 g servings/day) was observed for falls (pinteraction = 0.03) and fractures (pinteraction < 0.001). The largest benefit of higher vegetable diversity were observed in the one third of women with the lowest vegetable intake (<2.2 servings/day; falls HR 0.83 95% CI (0.71⁻0.98); fractures HR 0.74 95% CI (0.62⁻0.89)). Increasing vegetable diversity especially in older women with low vegetable intake may be an effective way to reduce injurious fall and fracture risk.
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13
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Grundy MML, Fardet A, Tosh SM, Rich GT, Wilde PJ. Processing of oat: the impact on oat's cholesterol lowering effect. Food Funct 2018; 9:1328-1343. [PMID: 29431835 PMCID: PMC5885279 DOI: 10.1039/c7fo02006f] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 12/31/2022]
Abstract
Epidemiological and interventional studies have clearly demonstrated the beneficial impact of consuming oat and oat-based products on serum cholesterol and other markers of cardiovascular disease. The cholesterol-lowering effect of oat is thought to be associated with the β-glucan it contains. However, not all food products containing β-glucan seem to lead to the same health outcome. Overall, highly processed β-glucan sources (where the oat tissue is highly disrupted) appear to be less effective at reducing serum cholesterol, but the reasons are not well understood. Therefore, the mechanisms involved still need further clarification. The purpose of this paper is to review current evidence of the cholesterol-lowering effect of oat in the context of the structure and complexity of the oat matrix. The possibility of a synergistic action and interaction between the oat constituents promoting hypocholesterolaemia is also discussed. A review of the literature suggested that for a similar dose of β-glucan, (1) liquid oat-based foods seem to give more consistent, but moderate reductions in cholesterol than semi-solid or solid foods where the results are more variable; (2) the quantity of β-glucan and the molecular weight at expected consumption levels (∼3 g day-1) play a role in cholesterol reduction; and (3) unrefined β-glucan-rich oat-based foods (where some of the plant tissue remains intact) often appear more efficient at lowering cholesterol than purified β-glucan added as an ingredient.
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Affiliation(s)
- Myriam M-L Grundy
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
| | - Anthony Fardet
- INRA, JRU 1019, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand & Université de Clermont, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Susan M Tosh
- University of Ottawa, Université, Salle 118, Ottawa, ON K1N 6N5 Canada.
| | - Gillian T Rich
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
| | - Peter J Wilde
- Food and Health Programme, Quadram Institute Bioscience, Norwich Research Park, NR4 7UA, UK.
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van Breda SGJ, de Kok TMCM. Smart Combinations of Bioactive Compounds in Fruits and Vegetables May Guide New Strategies for Personalized Prevention of Chronic Diseases. Mol Nutr Food Res 2017; 62. [PMID: 29108107 DOI: 10.1002/mnfr.201700597] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/19/2017] [Indexed: 12/24/2022]
Abstract
There is ample scientific evidence suggesting that the health benefits of eating the right amounts of a variety of vegetables and fruit are the consequence of the combined action of different phytochemicals. The present review provides an update of the scientific literature on additive and synergistic effects of mixtures of phytochemicals. Most research has been carried out in in vitro systems in which synergistic or additive effects have been established on the level of cell proliferation, apoptosis, antioxidant capacity, and tumor incidence, accompanied by changes in gene and protein expression in relevant pathways underlying molecular mechanisms of disease prevention. The number of human dietary intervention studies investigating complex mixtures of phytochemicals is relatively small, but showing promising results. These studies have demonstrated that combining transcriptomic data with phenotypic markers provide insight into the relevant cellular processes which contribute to the antioxidant response of complex mixtures of phytochemicals. Future studies should be designed as short-term studies testing different combinations of vegetables and fruit, in which markers for disease outcome as well as molecular ('omics)-markers and genetic variability between subjects are included. This will create new opportunities for food innovation and the development of more personalized strategies for prevention of chronic diseases.
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Affiliation(s)
- Simone G J van Breda
- Department of Toxicogenomics, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Theo M C M de Kok
- Department of Toxicogenomics, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
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Jones AD. Critical review of the emerging research evidence on agricultural biodiversity, diet diversity, and nutritional status in low- and middle-income countries. Nutr Rev 2017; 75:769-782. [PMID: 29028270 PMCID: PMC5914317 DOI: 10.1093/nutrit/nux040] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The declining diversity of agricultural production and food supplies worldwide may have important implications for global diets. The primary objective of this review is to assess the nature and magnitude of the associations of agricultural biodiversity with diet quality and anthropometric outcomes in low- and middle-income countries. A comprehensive review of 5 databases using a priori exclusion criteria and application of a systematic, qualitative analysis to the findings of identified studies revealed that agricultural biodiversity has a small but consistent association with more diverse household- and individual-level diets, although the magnitude of this association varies with the extent of existing diversification of farms. Greater on-farm crop species richness is also associated with small, positive increments in young child linear stature. Agricultural diversification may contribute to diversified diets through both subsistence- and income-generating pathways and may be an important strategy for improving diets and nutrition outcomes in low- and middle-income countries. Six research priorities for future studies of the influence of agricultural biodiversity on nutrition outcomes are identified based on gaps in the research literature.
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Affiliation(s)
- Andrew D Jones
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan, USA
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Babish JG, Dahlberg CJ, Ou JJ, Keller WJ, Gao W, Kaadige MR, Brabazon H, Lamb J, Soudah HC, Kou X, Zhang Z, Pacioretty LM, Tripp ML. Synergistic in vitro antioxidant activity and observational clinical trial of F105, a phytochemical formulation including Citrus bergamia, in subjects with moderate cardiometabolic risk factors. Can J Physiol Pharmacol 2016; 94:1257-1266. [PMID: 27463949 DOI: 10.1139/cjpp-2016-0062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We examined the clinical safety and efficacy of F105 in 11 subjects with moderate dyslipidemia. F105 is a combination of bergamot fruit extract (Citrus bergamia, BFE) and 9 phytoextracts selected for their ability to improve the antioxidant and anti-inflammatory activity of BFE. In vitro F105 exhibited a synergistic inhibition of oxygen radical absorbing capacity, peroxynitrite formation, and myeloperoxidase activity. Following 12 weeks of F105 daily, no treatment-related adverse events or changes in body mass were seen. Statistically significant changes were noted in total cholesterol (-7.3%), LDL-cholesterol (-10%), non-HDL cholesterol (-7.1%), cholesterol/HDL (-26%), and apolipoprotein B (-2.8%). A post hoc analysis of 8 subjects with HbA1c > 5.4 and HOMA-IR score > 2 or elevated triglycerides revealed additional statistically significant changes in addition to those previously observed in all subjects including triglycerides (-27%), oxLDL (-19%), LDL/HDL (-25%), triglycerides/HDL (-27%), oxLDL/HDL (-25%), and PAI-1 (-37%). A follow-up case report of a 70-year-old female patient, nonresponsive to statin therapy and placed on F105 daily, demonstrated improved cardiometabolic variables over 12 weeks similar to the subgroup. In summary, F105 was clinically well-tolerated and effective for ameliorating dyslipidemia in subjects with moderate cardiometabolic risk factors, particularly in the individuals with HbA1c > 5.4%.
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Affiliation(s)
- John G Babish
- a Bionexus, Ltd., 53 Brown Road, Suite B, Ithaca, NY 14850, USA
| | - Clinton J Dahlberg
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Joseph J Ou
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - William J Keller
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Wei Gao
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Mohan R Kaadige
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Holly Brabazon
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Joseph Lamb
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
| | - Hani C Soudah
- d Premier Medical Specialists, Stella Maris Obesity Medicine, Tenet Healthcare System, 2315 Dougherty Ferry Rd., Suite 109, St. Louis, MO 63122, USA.,e Washington University School of Medicine, St. Louis, 660 S Euclid Ave, St. Louis, MO 63110, USA
| | - Xiaolan Kou
- c Nature's Sunshine Products, 1655 North Main St., Spanish Fork, UT 84660, USA
| | - Zhe Zhang
- c Nature's Sunshine Products, 1655 North Main St., Spanish Fork, UT 84660, USA
| | | | - Matthew L Tripp
- b Hughes Center for Research and Innovation, Nature's Sunshine Products, 2500 Executive Parkway, Lehi, UT 84043, USA
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Review of nut phytochemicals, fat-soluble bioactives, antioxidant components and health effects. Br J Nutr 2015; 113 Suppl 2:S68-78. [PMID: 26148924 DOI: 10.1017/s0007114514003729] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The levels of phytochemicals (total phenols, proanthocyanidins, gallic acid + gallotannins, ellagic acid + ellagitannins, flavonoids, phenolic acids, stilbenes and phytates), fat-soluble bioactives (lipid, tocols, phytosterols, sphingolipids, carotenoids, chlorophylls and alkyl phenols) as well as natural antioxidants (nutrient and non-nutrient) present in commonly consumed twelve nuts (almond, Brazil nut, cashew, chestnut, hazelnut, heartnut, macadamia, peanut, pecan, pine nut, pistachio and walnut) are compared and reported. Recent studies adding new evidence for the health benefits of nuts are also discussed. Research findings from over 112 references, many of which have been published within last 10 years, have been compiled and reported.
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Comparative validity of vitamin C and carotenoids as indicators of fruit and vegetable intake: a systematic review and meta-analysis of randomised controlled trials. Br J Nutr 2015; 114:1331-40. [DOI: 10.1017/s0007114515003165] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractCirculating vitamin C and carotenoids are used as biomarkers of fruit and vegetable intake in research, but their comparative validity has never been meta-analysed. PubMed, EMBASE, CENTRAL, CINAHL and Web of Science were systematically searched up to December 2013 for randomised trials of different amounts of fruit and vegetable provision on changes in blood concentrations of carotenoids or vitamin C. Reporting followed PRISMA guidelines. Evidence quality was assessed using the GRADE system. Random effects meta-analysis combined estimates and meta-regression tested for sub-group differences. In all, nineteen fruit and vegetable trials (n1382) measured at least one biomarker, of which nine (n667) included five common carotenoids and vitamin C. Evidence quality was low and between-trial heterogeneity (I2) ranged from 74 % for vitamin C to 94 % forα-carotene. Groups provided with more fruit and vegetables had increased blood concentrations of vitamin C,α-carotene,β-carotene,β-cryptoxanthin and lutein but not lycopene. However, no clear dose–response effect was observed. Vitamin C showed the largest between-group difference in standardised mean change from the pre-intervention to the post-intervention period (smd0·94; 95 % CI 0·66, 1·22), followed by lutein (smd0·70; 95 % CI 0·37, 1·03) andα-carotene (smd0·63; 95 % CI 0·25, 1·01), but all CI were overlapping, suggesting that none of the biomarkers responded more than the others. Therefore, until further evidence identifies a particular biomarker to be superior, group-level compliance to fruit and vegetable interventions can be indicated equally well by vitamin C or a range of carotenoids. High heterogeneity and a lack of dose–response suggest that individual-level biomarker responses to fruit and vegetables are highly variable.
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Fardet A. How can both the health potential and sustainability of cereal products be improved? A French perspective. J Cereal Sci 2014. [DOI: 10.1016/j.jcs.2014.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Al-Dosari MS. Red cabbage (Brassica oleracea L.) mediates redox-sensitive amelioration of dyslipidemia and hepatic injury induced by exogenous cholesterol administration. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2014; 42:189-206. [PMID: 24467544 DOI: 10.1142/s0192415x1450013x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The widely used culinary vegetable, red cabbage (Brassica oleracea L. Var. capitata f. rubra), of the Brassicaceae family contains biologically potent anthocyanins and a myriad of antioxidants. Previous studies have shown that the pharmacological effects of red cabbage in vivo are redox-sensitive. The present study explored whether red cabbage modulates various histopathological and biochemical parameters in rats administered with a cholesterol-rich diet (CRD). To this end, prolonged administration of a lyophilized-aqueous extract of red cabbage (250 and 500 mg/kg body weight) significantly blunted the imbalances in lipids, liver enzymes and renal osmolytes induced by the CRD. The effects of red cabbage were compared to simvastatin (30 mg/kg body weight) treated rats. Estimation of malondialdehyde and non-protein sulfhydryls revealed robust antioxidant properties of red cabbage. Histopathological analysis of livers from rats administered with red cabbage showed marked inhibition in inflammatory and necrotic changes triggered by CRD. Similarly, in vitro studies using a 2',7'-Dichlorofluorescein-based assay showed that red cabbage conferred cytoprotective effects in cultured HepG2 cells. In conclusion, the present study discloses the potential therapeutic effects of red cabbage in dyslipidemia as well as hepatic injury, that is at least, partly mediated by its antioxidant properties.
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Affiliation(s)
- Mohammed S Al-Dosari
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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21
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Socio-economic and behavioural determinants of fruit and vegetable intake in Moroccan women. Public Health Nutr 2014; 18:809-16. [PMID: 25166305 DOI: 10.1017/s1368980014001761] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To estimate daily fruit and vegetable intakes and to investigate socio-economic and behavioural differences in fruit and vegetable consumption among urban Moroccan women. DESIGN A cross-sectional survey. Fruit and vegetable intake was measured with a single 24 h recall. SETTINGS A representative population-based survey conducted in the area of Rabat-Salé. SUBJECTS Women (n 894) of child-bearing age (20-49 years). RESULTS Mean fruit and vegetable intake was 331 g/d (155 g/d for fruit and 176 g/d for vegetables). Only one-third (32.1 %) of women consumed ≥ 400 g/d and half the sample (50.6 %) were considered as low consumers, i.e. <280 g/d. Women of higher economic status ate significantly more fruit (P<0.05) and more fruit and vegetables combined (P<0.05). Women ate significantly less vegetables if they ate out of home more often or skipped at least one main meal (breakfast, lunch or dinner) or ate more processed foods (P<0.05, P<0.01 and P<0.001, respectively). Fruit and vegetable diversity was not associated with any of the factors investigated. CONCLUSIONS In this population, fruit and vegetable intakes are driven by different determinants. Indeed, while vegetable consumption was related only to behavioural determinants, fruit consumption was influenced only by economic status. Therefore, programmes promoting fruit and vegetable intake would be more effective if they account for these specific determinants in their design.
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22
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Fardet A, Rock E. Toward a new philosophy of preventive nutrition: from a reductionist to a holistic paradigm to improve nutritional recommendations. Adv Nutr 2014; 5:430-46. [PMID: 25022992 PMCID: PMC4085191 DOI: 10.3945/an.114.006122] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The reductionist approach has been predominant to date in human nutrition research and has unraveled some of the fundamental mechanisms at the basis of food nutrients (e.g., those that involve deficiency diseases). In Western countries, along with progress in medicine and pharmacology, the reductionist approach helped to increase life expectancy. However, despite 40 y of research in nutrition, epidemics of obesity and diabetes are growing each year worldwide, both in developed and developing countries, leading to a decrease in healthy life years. Yet, interactions between nutrition-health relations cannot be modeled on the basis of a linear cause-effect relation between 1 food compound and 1 physiologic effect but rather from multicausal nonlinear relations. In other words, explaining the whole from the specific by a bottom-up reductionist approach has its limits. A top-down approach becomes necessary to investigate complex issues through a holistic view before addressing any specific question to explain the whole. However, it appears that both approaches are necessary and mutually reinforcing. In this review, Eastern and Western research perspectives are first presented, laying out bases for what could be the consequences of applying a reductionist versus holistic approach to research in nutrition vis-à-vis public health, environmental sustainability, breeding, biodiversity, food science and processing, and physiology for improving nutritional recommendations. Therefore, research that replaces reductionism with a more holistic approach will reveal global and efficient solutions to the problems encountered from the field to the plate. Preventive human nutrition can no longer be considered as "pharmacology" or foods as "drugs."
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Affiliation(s)
- Anthony Fardet
- Department of Human Nutrition, INRA, UMR 1019, UNH, CRNH Auvergne, Clermont-Ferrand, France; and Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, Clermont-Ferrand, France
| | - Edmond Rock
- Department of Human Nutrition, INRA, UMR 1019, UNH, CRNH Auvergne, Clermont-Ferrand, France; and Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, Clermont-Ferrand, France
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23
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Lerman RH, Desai A, Lamb JJ, Chang JL, Darland G, Konda VR. A Phytochemical-rich Multivitamin-multimineral Supplement Is Bioavailable and Reduces Serum Oxidized Low-density Lipoprotein, Myeloperoxidase, and Plasminogen Activator Inhibitor-1 in a Four-week Pilot trial of Healthy Individuals. Glob Adv Health Med 2014; 3:34-9. [PMID: 24808980 PMCID: PMC4010963 DOI: 10.7453/gahmj.2013.098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND A multivitamin-multimineral supplement combined with a diverse blend of bioactive phytochemicals may provide additional antioxidant capacity and anti-inflammatory property for overall health. This convenient feature may be useful for individuals who want to increase their intake of phytochemicals. METHODS We conducted a pilot study in 15 healthy individuals (8 women and 7 men, mean age 41.7±14.9 years, mean body mass index 28.0±5.6) to investigate the effects of this novel formulation on biomarkers associated with oxidative stress and inflammation. After a 2-week diet that limited intake of fruits and vegetables to 2 servings/day, participants continued with the same restricted diet but began consuming 2 tablets of the study product for the subsequent 4 weeks. Fasting blood samples collected at Week 2 and Week 6 were analyzed and compared using paired t-tests for levels of carotenoids, folate, vitamin B12, homocysteine, oxidized low-density lipoprotein cholesterol (oxLDL), high-sensitivity C-reactive protein (hs-CRP), F2-isoprostane, plasminogen activator inhibitor-1 (PAI-1), and myeloperoxidase. Noninvasive peripheral arterial tonometry (EndoPAT) was also measured. RESULTS After 4 weeks of supplementation, plasma levels of carotenoids, folate, and vitamin B12, but not homocysteine, were significantly increased (P<.05). Serum levels of oxLDL, PAI-1 and myeloperoxidase were significantly reduced (P<.05), but F2-isoprostane, hs-CRP, and EndoPAT measures were unchanged compared with baseline. The study product was well tolerated. CONCLUSIONS This nutritional supplement is bioavailable as indicated by the significant increase in plasma carotenoids, vitamin B12, and folate levels and may provide health benefits by significantly reducing serum levels of oxLDL, myeloperoxidase, and PAI-1 in healthy individuals.
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Affiliation(s)
- Robert H Lerman
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington, United States
| | - Anuradha Desai
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington, United States
| | - Joseph J Lamb
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington, United States
| | - Jyh-Lurn Chang
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington, United States
| | - Gary Darland
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington, United States
| | - Veera R Konda
- Functional Medicine Research Center, Research and Development, Metagenics, Inc, Gig Harbor, Washington
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O’Sullivan A, Armstrong P, Schuster GU, Pedersen TL, Allayee H, Stephensen CB, Newman JW. Habitual diets rich in dark-green vegetables are associated with an increased response to ω-3 fatty acid supplementation in Americans of African ancestry. J Nutr 2014; 144:123-31. [PMID: 24259553 PMCID: PMC3901419 DOI: 10.3945/jn.113.181875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Although substantial variation exists in individual responses to omega-3 (ω-3) (n-3) fatty acid supplementation, the causes for differences in response are largely unknown. Here we investigated the associations between the efficacy of ω-3 fatty acid supplementation and a broad range of nutritional and clinical factors collected during a double-blind, placebo-controlled trial in participants of African ancestry, randomly assigned to receive either 2 g eicosapentaenoic acid (EPA) + 1 g docosahexaenoic acid (n = 41) or corn/soybean oil placebo (n = 42) supplements for 6 wk. Food-frequency questionnaires were administered, and changes in erythrocyte lipids, lipoproteins, and monocyte 5-lipoxygenase-dependent metabolism were measured before and after supplementation. Mixed-mode linear regression modeling identified high (n = 28) and low (n = 13) ω-3 fatty acid response groups on the basis of changes in erythrocyte EPA abundance (P < 0.001). Compliance was equivalent (∼88%), whereas decreases in plasma triglycerides and VLDL particle sizes and reductions in stimulated monocyte leukotriene B4 production were larger in the high-response group. Although total diet quality scores were similar, the low-response group showed lower estimated 2005 Healthy Eating Index subscores for dark-green and orange vegetables and legumes (P = 0.01) and a lower intake of vegetables (P = 0.02), particularly dark-green vegetables (P = 0.002). Because the findings reported here are associative in nature, prospective studies are needed to determine if dietary dark-green vegetables or nutrients contained in these foods can enhance the efficacy of ω-3 fatty acid supplements. This trial was registered at clinicaltrials.gov as NCT00536185.
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Affiliation(s)
| | | | | | | | - Hooman Allayee
- Institute for Genetic Medicine and Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Charles B. Stephensen
- Nutrition, University of California, Davis, Davis, CA,Immunity and Disease Prevention Research Unit, Western Human Nutrition Research Center, Agricultural Research Service, USDA, Davis, CA
| | - John W. Newman
- Nutrition, University of California, Davis, Davis, CA,Obesity and Metabolism Research Unit, and,To whom correspondence should be addressed. E-mail:
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Neville CE, Young IS, Gilchrist SECM, McKinley MC, Gibson A, Edgar JD, Woodside JV. Effect of increased fruit and vegetable consumption on bone turnover in older adults: a randomised controlled trial. Osteoporos Int 2014; 25:223-33. [PMID: 23716039 DOI: 10.1007/s00198-013-2402-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
Abstract
UNLABELLED Evidence suggests that increased fruit and vegetable (FV) intake may be associated with improved bone health, but there is limited evidence from intervention trials to support this. This 16-week study showed that increased FV consumption (five or more portions per day) does not have any effect on the markers of bone health in older adults. INTRODUCTION Observational evidence suggests that increased FV consumption may be associated with improved bone health. However, there is lack of evidence from intervention trials to support this. This study examined the effect of increased FV consumption on bone markers among healthy, free-living older adults. METHODS A randomised controlled trial was undertaken. Eighty-three participants aged 65-85 years, habitually consuming less than or equal to two portions of FV per day, were randomised to continue their normal diet or to consume five or more portions of FV per day for 16 weeks. FV were delivered to all participants each week, free of charge. Compliance was assessed at baseline and at 6, 12 and 16 weeks by diet histories and biomarkers of micronutrient status. Fasting serum bone markers (osteocalcin (OC) and C-terminal telopeptide of type 1 collagen (CTX)) were measured using enzyme-linked immunosorbent assay. RESULTS Eighty-two participants completed the intervention. The five portions per day group showed a significantly greater change in daily FV consumption compared to the two portions per day group (p < 0.001), and this was reflected in significant increases in micronutrient status. No significant differences were evident in change in bone markers between the two portions per day group and the five portions per day group over the 16 weeks (geometric mean of week 16 to baseline ratio (95% confidence interval): OC-0.95 (0.89-1.02) and 1.04 (0.91-1.18), respectively, p = 0.25; CTX-1.06 (0.95-1.19) and 0.98 (0.90-1.06) respectively, p = 0.20). CONCLUSIONS Increased FV consumption had no effect on bone markers in older adults. Larger intervention studies of longer duration are warranted to establish whether long-term FV consumption can benefit bone health.
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Affiliation(s)
- C E Neville
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, BT12 6BJ, UK
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Lee SG, Kim B, Yang Y, Pham TX, Park YK, Manatou J, Koo SI, Chun OK, Lee JY. Berry anthocyanins suppress the expression and secretion of proinflammatory mediators in macrophages by inhibiting nuclear translocation of NF-κB independent of NRF2-mediated mechanism. J Nutr Biochem 2013; 25:404-11. [PMID: 24565673 DOI: 10.1016/j.jnutbio.2013.12.001] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 12/01/2013] [Accepted: 12/05/2013] [Indexed: 11/26/2022]
Abstract
The objectives of this study were to compare the anti-inflammatory effects of anthocyanins from blueberry (BBA), blackberry (BKA), and blackcurrant (BCA) and to determine the relationship between their antioxidant capacity and anti-inflammatory effect in macrophages. Major anthocyanins in BBA, BKA and BCA were malvidin-3-glucoside (16%), cyanidin-3-glucoside (98%) and delphinidin-3-rutinoside (44%), respectively. BKA showed higher total antioxidant capacity than BBA and BCA. RAW 264.7 macrophages were incubated with 0-20 μg/ml of BBA, BKA and BCA, and subsequently activated by lipopolysaccharide (LPS) to measure proinflammatory cytokine production. Interleukin 1β (IL-1β) messenger RNA (mRNA) levels were significantly decreased by all berry anthocyanins at 10 μg/ml or higher. Tumor necrosis factor α (TNFα) mRNA levels and secretion were also significantly decreased in LPS-treated macrophages. The levels of the repression were comparable for all berry anthocyanins. LPS-induced nuclear factor κB (NF-κB) p65 translocation to the nucleus was markedly attenuated by all of the berry anthocyanins. In bone marrow-derived macrophages (BMMs) from nuclear factor E2-related factor 2 wild-type (Nrf2(+/+)) mice, BBA, BKA and BCA significantly decreased cellular reactive oxygen species (ROS) levels with a concomitant decrease in IL-1β mRNA levels upon LPS stimulation. However, in the BMM from Nrf2(-/-) mice, the anthocyanin fractions were able to significantly decrease IL-1β mRNA despite the fact that ROS levels were not significantly affected. In conclusion, BBA, BKA and BCA exert their anti-inflammatory effects in macrophages, at least in part, by inhibiting nuclear translocation of NF-κB independent of the NRF2-mediated pathways.
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Affiliation(s)
- Sang Gil Lee
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Bohkyung Kim
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Yue Yang
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Tho X Pham
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Young-Ki Park
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Jose Manatou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Sung I Koo
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Ock K Chun
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Ji-Young Lee
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA.
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The search for a new paradigm to study micronutrient and phytochemical bioavailability: from reductionism to holism. Med Hypotheses 2013; 82:181-6. [PMID: 24355424 DOI: 10.1016/j.mehy.2013.11.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 11/28/2013] [Indexed: 12/30/2022]
Abstract
The study of micronutrient and phytochemical (MaP, i.e., non-energy nutrients) bioavailability has been mainly studied through a reductionist and pharmacological approach. This has led to associate one health effect to one MaP. However, human interventional studies have given conflicting and disappointing results about MaP supplementation. This is because the health effect is the result of the synergetic action of numerous MaPs supplied by foods and/or diets at nutritional doses. A food is not a drug. Therefore, there is a need for more holistic approach to study MaP bioavailability, then their health effect to achieve general recommendations. This paper aims to hypothesize for such a paradigm shift in this topic and to lay new foundations for research in MaP bioavailability.
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Neville CE, Young IS, Gilchrist SECM, McKinley MC, Gibson A, Edgar JD, Woodside JV. Effect of increased fruit and vegetable consumption on physical function and muscle strength in older adults. AGE (DORDRECHT, NETHERLANDS) 2013; 35:2409-22. [PMID: 23543264 PMCID: PMC3825010 DOI: 10.1007/s11357-013-9530-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 03/18/2013] [Indexed: 06/02/2023]
Abstract
Fruit and vegetable (FV) intake, which is often low in older people, may be associated with improved muscle strength and physical function. However, there is a shortage of intervention trial evidence to support this. The current study examined the effect of increased FV consumption on measures of muscle strength and physical function among healthy, free-living older adults. A randomized controlled intervention study was undertaken. Eighty-three participants aged 65-85 years, habitually consuming ≤ 2 portions of FV/day, were randomised to continue their normal diet (≤ 2 portions/day), or to consume ≥ 5 portions of FV/day for 16 weeks. FV were delivered to all participants each week, free of charge. Compliance was monitored at baseline, 6, 12 and 16 weeks by diet history and by measuring biomarkers of micronutrient status. Grip strength was measured by a hand-held dynamometer, while lower-extremity physical function was assessed by performance-based measures. Eighty-two participants completed the intervention. The 5 portions/day group showed greater change in daily FV consumption compared to the 2 portions/day group (P < 0.001). This was reflected in significant increases in biomarkers of micronutrient status. No significant differences were evident in change in physical function between the two groups. However, there was a trend towards a greater change in grip strength in the 5 portions/day compared to the 2 portions/day group (mean change at 16 weeks ± SD, 2.04 ± 5.16 and 0.11 ± 3.26 kg, respectively, P = 0.06). Increased FV consumption may modestly increase grip strength but has no effect on physical function in healthy older adults.
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Affiliation(s)
- Charlotte E. Neville
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
| | - Ian S. Young
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
| | - Sarah E. C. M. Gilchrist
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
| | - Michelle C. McKinley
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
| | - Andrew Gibson
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
| | - J. David Edgar
- />Regional Immunology Service, Belfast Health and Social Care Trust, Belfast, BT12 6BN UK
| | - Jayne V. Woodside
- />Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, BT12 6BJ UK
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Loft S, Olsen A, Møller P, Poulsen HE, Tjønneland A. Association between 8-oxo-7,8-dihydro-2'-deoxyguanosine excretion and risk of postmenopausal breast cancer: nested case-control study. Cancer Epidemiol Biomarkers Prev 2013; 22:1289-96. [PMID: 23658396 DOI: 10.1158/1055-9965.epi-13-0229] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Oxidative stress may be important in carcinogenesis and a possible risk factor for breast cancer. The urinary excretion of oxidatively generated biomolecules, such as 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG), represents biomarkers of oxidative stress, reflecting the rate of global damage to DNA in steady state. METHODS In a nested case-control design, we examined associations between urinary excretion of 8-oxodG and risk of breast cancer in a population-based cohort of 24,697 postmenopausal women aged 50 to 64 years with 3 to 7 years follow-up. The accruing cases of breast cancer were matched to controls by age at diagnosis, baseline age, and hormone replacement therapy (HRT). Spot urine samples collected at entry was analyzed for 8-oxodG by high-performance liquid chromatography with electrochemical detection. Incidence rate ratio (IRR; 95% confidence intervals) based on 336 matched pairs with all information was estimated per unit increase in 8-oxodG divided by creatinine for all and estrogen receptor (ER) positive and negative breast cancers. RESULTS There was a borderline significant positive association between 8-oxodG and risk of all breast cancer (IRR: 1.08; 1.00-1.17 per unit increase in nmol/mmol creatinine). This association was significant with respect to the risk of ER-positive cancer (IRR: 1.11; 1.01-1.23) and among women not using HRT (IRR: 1.11; 0.97-1.26) or with low dietary iron intake (IRR: 1.10; 1.06-1.37 per unit increase) for all breast cancer. CONCLUSIONS We observed positive association between 8-oxodG excretion and risk of especially ER-positive breast cancer. IMPACT Our results suggest that oxidative stress with damage to DNA is important for the development of breast cancer.
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Affiliation(s)
- Steffen Loft
- Department of Public Health, Section of Enviromental Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Glutathione S-transferase M1 and T1 gene polymorphisms with consumption of high fruit-juice and vegetable diet affect antioxidant capacity in healthy adults. Nutrition 2013; 29:965-71. [PMID: 23422534 DOI: 10.1016/j.nut.2012.12.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 11/15/2012] [Accepted: 12/20/2012] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To our knowledge, no data have yet shown the combined effects of GSTM1/GSTT1 gene polymorphisms with high consumption of a fruit and vegetable diet on the body's antioxidant capacity. A 2-wk dietary intervention in healthy participants was conducted to test the hypothesis that the antioxidant biomarkers in individuals with different glutathione-S-transferases (GST) genotypes will be different in response to a high fruit-juice and vegetable diet. METHODS In our study, 24 healthy volunteers with different GST genotypes (12 GSTM1+/GSTT1+ and 12 GSTM1-/GSTT1- participants) consumed a controlled diet high in fruit-juice and vegetables for 2 wk. Blood and first-void urine specimens were obtained at baseline, 1-wk, and 2-wk intervals. The antioxidant capacity-related biomarkers in blood and urine were observed and recorded at the scheduled times. RESULTS Erythrocyte GST and glutathione reductase (GR) activities response to a high fruit-juice and vegetable diet are GST genotype-dependent. Two weeks on the high fruit-juice and vegetable diet increased GST and GR activities in the GSTM1+/GSTT1+ group (P < 0.05 compared with baseline or GSTM1-/GSTT1- group), although no effects were observed on GST and GR activities in GSTM1-/GSTT1- participants. Dietary intervention increased total antioxidant capacity and decreased plasma malondialdehyde content in all participants (P < 0.05 compared with baseline), whereas GSTM1+/GSTT1+ participants respond more quickly to a high fruit-juice and vegetable diet than GSTM1-/GSTT1- participants. The diet intervention was effective in enhancing glutathione peroxidase and catalase activities in all participants (P < 0.05 compared with baseline), although there was no influence on erythrocyte superoxide dismutase activity (P > 0.05). CONCLUSION The effects of a diet rich in fruit-juice and vegetables on antioxidant capacity were dependent on GSTM1/GSTT1 genotypes.
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Fardet A, Chardigny JM. Plant-Based Foods as a Source of Lipotropes for Human Nutrition: A Survey of In Vivo Studies. Crit Rev Food Sci Nutr 2013; 53:535-90. [DOI: 10.1080/10408398.2010.549596] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Hedrick VE, Dietrich AM, Estabrooks PA, Savla J, Serrano E, Davy BM. Dietary biomarkers: advances, limitations and future directions. Nutr J 2012; 11:109. [PMID: 23237668 PMCID: PMC3568000 DOI: 10.1186/1475-2891-11-109] [Citation(s) in RCA: 174] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 12/12/2012] [Indexed: 01/24/2023] Open
Abstract
The subjective nature of self-reported dietary intake assessment methods presents numerous challenges to obtaining accurate dietary intake and nutritional status. This limitation can be overcome by the use of dietary biomarkers, which are able to objectively assess dietary consumption (or exposure) without the bias of self-reported dietary intake errors. The need for dietary biomarkers was addressed by the Institute of Medicine, who recognized the lack of nutritional biomarkers as a knowledge gap requiring future research. The purpose of this article is to review existing literature on currently available dietary biomarkers, including novel biomarkers of specific foods and dietary components, and assess the validity, reliability and sensitivity of the markers. This review revealed several biomarkers in need of additional validation research; research is also needed to produce sensitive, specific, cost-effective and noninvasive dietary biomarkers. The emerging field of metabolomics may help to advance the development of food/nutrient biomarkers, yet advances in food metabolome databases are needed. The availability of biomarkers that estimate intake of specific foods and dietary components could greatly enhance nutritional research targeting compliance to national recommendations as well as direct associations with disease outcomes. More research is necessary to refine existing biomarkers by accounting for confounding factors, to establish new indicators of specific food intake, and to develop techniques that are cost-effective, noninvasive, rapid and accurate measures of nutritional status.
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Affiliation(s)
- Valisa E Hedrick
- Department of Human Nutrition, Foods and Exercise, 221 Wallace Hall (0430), Virginia Tech, Blacksburg, Virginia 24061, USA.
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Gooda Sahib N, Saari N, Ismail A, Khatib A, Mahomoodally F, Abdul Hamid A. Plants' metabolites as potential antiobesity agents. ScientificWorldJournal 2012; 2012:436039. [PMID: 22666121 PMCID: PMC3362029 DOI: 10.1100/2012/436039] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 03/04/2012] [Indexed: 12/23/2022] Open
Abstract
Obesity and obesity-related complications are on the increase both in the developed and developing world. Since existing pharmaceuticals fail to come up with long-term solutions to address this issue, there is an ever-pressing need to find and develop new drugs and alternatives. Natural products, particularly medicinal plants, are believed to harbor potential antiobesity agents that can act through various mechanisms either by preventing weight gain or promoting weight loss amongst others. The inhibition of key lipid and carbohydrate hydrolyzing and metabolizing enzymes, disruption of adipogenesis, and modulation of its factors or appetite suppression are some of the plethora of targeted approaches to probe the antiobesity potential of medicinal plants. A new technology such as metabolomics, which deals with the study of the whole metabolome, has been identified to be a promising technique to probe the progression of diseases, elucidate their pathologies, and assess the effects of natural health products on certain pathological conditions. This has been applied to drug research, bone health, and to a limited extent to obesity research. This paper thus endeavors to give an overview of those plants, which have been reported to have antiobesity effects and highlight the potential and relevance of metabolomics in obesity research.
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Affiliation(s)
- Najla Gooda Sahib
- Faculty of Food Science and Technology, Universiti Putra Malaysia, Selangor, 43400 Serdang, Malaysia.
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Baldrick FR, Woodside JV, Elborn JS, Young IS, McKinley MC. Biomarkers of Fruit and Vegetable Intake in Human Intervention Studies: A Systematic Review. Crit Rev Food Sci Nutr 2011; 51:795-815. [DOI: 10.1080/10408398.2010.482217] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Crane TE, Kubota C, West JL, Kroggel MA, Wertheim BC, Thomson CA. Increasing the vegetable intake dose is associated with a rise in plasma carotenoids without modifying oxidative stress or inflammation in overweight or obese postmenopausal women. J Nutr 2011; 141:1827-33. [PMID: 21865569 PMCID: PMC3174856 DOI: 10.3945/jn.111.139659] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The optimal amount of vegetable consumption required to reduce chronic disease risk is widely debated. Intervention trials evaluating biological activity of vegetables at various doses are limited. We conducted a 3-dose, crossover feeding trial to test the hypothesis that vegetable intake is associated in a dose-dependent manner with increased plasma carotenoids and subsequently reduced oxidative stress and inflammation in 49 overweight, postmenopausal women. Participants were assigned in random order to 2 (130 g), 5 (287 g), and 10 (614 g) daily servings of fresh, greenhouse-grown vegetables for 3-wk intervals with a 4-wk washout period between treatments. Plasma total carotenoids significantly increased from 1.63 to 2.07 μmol/L with a dose of 2 vegetable servings, from 1.49 to 2.84 μmol/L with a dose of 5 vegetable servings, and from 1.40 to 4.42 μmol/L with a dose of 10 vegetable servings (pre-post paired ttests, all P < 0.001). The change during each feeding period increased with each dose level (P < 0.001). Urine concentrations of 8-isoprostane F2α, hexanoyl lysine, and serum high sensitivity C-reactive protein were not affected by any administered vegetable dose. In this variable-dose vegetable study, a dose-response for plasma carotenoids was demonstrated without significant change in oxidative stress and inflammation in overweight, postmenopausal women.
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Affiliation(s)
| | | | | | | | | | - Cynthia A. Thomson
- Department of Nutritional Sciences,Arizona Cancer Center, University of Arizona, Tucson, AZ,To whom correspondence should be addressed. E-mail:
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Sedlacek SM, Playdon MC, Wolfe P, McGinley JN, Wisthoff MR, Daeninck EA, Jiang W, Zhu Z, Thompson HJ. Effect of a low fat versus a low carbohydrate weight loss dietary intervention on biomarkers of long term survival in breast cancer patients ('CHOICE'): study protocol. BMC Cancer 2011; 11:287. [PMID: 21733177 PMCID: PMC3150342 DOI: 10.1186/1471-2407-11-287] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Accepted: 07/06/2011] [Indexed: 01/12/2023] Open
Abstract
Background Weight loss in overweight or obese breast cancer patients is associated with an improved prognosis for long term survival. However, it is not clear whether the macronutrient composition of the chosen weight loss dietary plan imparts further prognostic benefit. A study protocol is presented for a dietary intervention to investigate the effects of weight loss dietary patterns that vary markedly in fat and carbohydrate contents on biomarkers of exposure to metabolic processes that may promote tumorigenesis and that are predictive of long term survival. The study will also determine how much weight must be lost for biomarkers to change in a favorable direction. Methods/Design Approximately 370 overweight or obese postmenopausal breast cancer survivors (body mass index: 25.0 to 34.9 kg/m2) will be accrued and assigned to one of two weight loss intervention programs or a non-intervention control group. The dietary intervention is implemented in a free living population to test the two extremes of popular weight loss dietary patterns: a high carbohydrate, low fat diet versus a low carbohydrate, high fat diet. The effects of these dietary patterns on biomarkers for glucose homeostasis, chronic inflammation, cellular oxidation, and steroid sex hormone metabolism will be measured. Participants will attend 3 screening and dietary education visits, and 7 monthly one-on-one dietary counseling and clinical data measurement visits in addition to 5 group visits in the intervention arms. Participants in the control arm will attend two clinical data measurement visits at baseline and 6 months. The primary outcome is high sensitivity C-reactive protein. Secondary outcomes include interleukin-6, tumor necrosis factor-α, insulin-like growth factor-1 (IGF), IGF binding protein-3, 8-isoprostane-F2-alpha, estrone, estradiol, progesterone, sex hormone binding globulin, adiponectin, and leptin. Discussion While clinical data indicate that excess weight for height is associated with poor prognosis for long term survival, little attention is paid to weight control in the clinical management of breast cancer. This study will provide information that can be used to answer important patient questions about the effects of dietary pattern and magnitude of weight loss on long term survival following breast cancer treatment. Clinical Trial Registration CA125243
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Affiliation(s)
- Scot M Sedlacek
- Cancer Prevention Laboratory, Colorado State University, Fort Collins, CO, USA
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Zero effect of multiple dosage of olive leaf supplements on urinary biomarkers of oxidative stress in healthy humans. Nutrition 2009; 25:270-80. [DOI: 10.1016/j.nut.2008.08.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 08/02/2008] [Accepted: 08/25/2008] [Indexed: 11/20/2022]
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Use of conventional and -omics based methods for health claims of dietary antioxidants: a critical overview. Br J Nutr 2009; 99 E Suppl 1:ES3-52. [PMID: 18503734 DOI: 10.1017/s0007114508965752] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This article describes the principles and limitations of methods used to investigate reactive oxygen species (ROS) protective properties of dietary constituents and is aimed at providing a better understanding of the requirements for science based health claims of antioxidant (AO) effects of foods. A number of currently used biochemical measurements aimed of determining the total antioxidant capacity and oxidised lipids and proteins are carried out under unphysiological conditions and are prone to artefact formation. Probably the most reliable approaches are measurements of isoprostanes as a parameter of lipid peroxidation and determination of oxidative DNA damage. Also the design of the experimental models has a strong impact on the reliability of AO studies: the common strategy is the identification of AO by in vitro screening with cell lines. This approach is based on the assumption that protection towards ROS is due to scavenging, but recent findings indicate that activation of transcription factors which regulate genes involved in antioxidant defence plays a key role in the mode of action of AO. These processes are not adequately represented in cell lines. Another shortcoming of in vitro experiments is that AO are metabolised in vivo and that most cell lines are lacking enzymes which catalyse these reactions. Compounds with large molecular configurations (chlorophylls, anthocyans and polyphenolics) are potent AO in vitro, but weak or no effects were observed in animal/human studies with realistic doses as they are poorly absorbed. The development of -omics approaches will improve the scientific basis for health claims. The evaluation of results from microarray and proteomics studies shows that it is not possible to establish a general signature of alterations of transcription and protein patterns by AO. However, it was shown that alterations of gene expression and protein levels caused by experimentally induced oxidative stress and ROS related diseases can be normalised by dietary AO.
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de Olinda TM, Lemos TLG, Machado LL, Rao VS, Santos FA. Quebrachitol-induced gastroprotection against acute gastric lesions: role of prostaglandins, nitric oxide and K+ ATP channels. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2008; 15:327-333. [PMID: 17976970 DOI: 10.1016/j.phymed.2007.09.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Accepted: 09/04/2007] [Indexed: 05/25/2023]
Abstract
The effect of Quebrachitol (2-O-methyl-L-inositol), a bioactive component from Magonia glabrata fruit extract was investigated against gastric damage induced by absolute ethanol (96%, 0.2 ml/animal) and indomethacin (30 mg/kg, p.o.), in mice. Quebrachitol at oral doses of 12.5, 25, and 50mg/kg markedly attenuated the gastric lesions induced by ethanol to the extent of 69%, 64%, and 53% and against indomethacin by 55%, 59%, and 26%, respectively. While pretreatment with TRPV1 antagonist capsazepine (5mg/kg, i.p.) failed to block effectively the gastroprotective effect of quebrachitol (25mg/kg) against ethanol damage, the non-selective cyclooxygenase inhibitor indomethacin (10mg/kg, p.o.), almost abolished it. Furthermore, quebrachitol effect was significantly reduced in mice pretreated with L-NAME, or glibenclamide, the respective inhibitors of nitric oxide synthase and K(+)(ATP) channel activation. Thus we provide the first evidence that quebrachitol reduces the gastric damage induced by ethanol and indomethacin, at least in part, by mechanisms that involve endogenous prostaglandins, nitric oxide release, and or the activation of K(+)(ATP) channels.
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Affiliation(s)
- T M de Olinda
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, P.O. Box 3157, 60430-270 Fortaleza, CE, Brazil
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