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Kumar P, Banik SP, Ohia SE, Moriyama H, Chakraborty S, Wang CK, Song YS, Goel A, Bagchi M, Bagchi D. Current Insights on the Photoprotective Mechanism of the Macular Carotenoids, Lutein and Zeaxanthin: Safety, Efficacy and Bio-Delivery. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024; 43:505-518. [PMID: 38393321 DOI: 10.1080/27697061.2024.2319090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/11/2024] [Indexed: 02/25/2024]
Abstract
Ocular health has emerged as one of the major issues of global health concern with a decline in quality of life in an aging population, in particular and rise in the number of associated morbidities and mortalities. One of the chief reasons for vision impairment is oxidative damage inflicted to photoreceptors in rods and cone cells by blue light as well as UV radiation. The scenario has been aggravated by unprecedented rise in screen-time during the COVID and post-COVID era. Lutein and Zeaxanthin are oxygenated carotenoids with proven roles in augmentation of ocular health largely by virtue of their antioxidant properties and protective effects against photobleaching of retinal pigments, age-linked macular degeneration, cataract, and retinitis pigmentosa. These molecules are characterized by their characteristic yellow-orange colored pigmentation and are found in significant amounts in vegetables such as corn, spinach, broccoli, carrots as well as fish and eggs. Unique structural signatures including tetraterpenoid skeleton with extensive conjugation and the presence of hydroxyl groups at the end rings have made these molecules evolutionarily adapted to localize in the membrane of the photoreceptor cells and prevent their free radical induced peroxidation. Apart from the benefits imparted to ocular health, lutein and zeaxanthin are also known to improve cognitive function, cardiovascular physiology, and arrest the development of malignancy. Although abundant in many natural sources, bioavailability of these compounds is low owing to their long aliphatic backbones. Under the circumstances, there has been a concerted effort to develop vegetable oil-based carriers such as lipid nano-emulsions for therapeutic administration of carotenoids. This review presents a comprehensive update of the therapeutic potential of the carotenoids along with the challenges in achieving an optimized delivery tool for maximizing their effectiveness inside the body.
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Affiliation(s)
- Pawan Kumar
- R&D Department, Chemical Resources (CHERESO), Panchkula, India
| | - Samudra P Banik
- Department of Microbiology, Maulana Azad College, Kolkata, India
| | - Sunny E Ohia
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Texas Southern University, Houston, TX, USA
| | - Hiroyoshi Moriyama
- Department of Scientific Affairs, The Japanese Institute for Health Food Standards, Tokyo, Japan
| | - Sanjoy Chakraborty
- Department of Biological Sciences, New York City College of Technology/CUNY, Brooklyn, NY, USA
| | - Chin-Kun Wang
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan
| | - Yong Sang Song
- Department of Obstetrics and Gynaecology, Seoul National University Hospital, Seoul, South Korea
| | - Apurva Goel
- Regulation Department, Chemical Resources (CHERESO), Panchkula, India
| | | | - Debasis Bagchi
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Texas Southern University, Houston, TX, USA
- Department of Biology, College of Arts and Sciences, and Department of Psychology, Gordon F. Derner School of Psychology, Adelphi University, Garden City, NY, USA
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Kulczyński B, Sidor A, Brzozowska A, Gramza-Michałowska A. The role of carotenoids in bone health-A narrative review. Nutrition 2024; 119:112306. [PMID: 38211461 DOI: 10.1016/j.nut.2023.112306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/12/2023] [Accepted: 11/21/2023] [Indexed: 01/13/2024]
Abstract
Osteoporosis constitutes a serious challenge for public health. Dietary patterns belong to important, modifiable risk factors of this disease. Therefore, what and in what quantities we consume on a daily basis are extremely relevant. It is commonly known that bone health is positively affected by vitamins (e.g., vitamin D and vitamin K) as well as mineral components (e.g., calcium and magnesium). However, the human diet consists of many other groups of compounds that exhibit a potential antiosteoporotic and supporting bone-building effect. These dietary components include carotenoids. This paper presents a broad review of studies on the influence of particular carotenoids (β-carotene, lutein, zeaxanthin, β-cryptoxanthin, and lycopene) on bones. The paper discusses up-to-date in vitro experiments and research on animal models and presents how the results translate into clinical effect in humans.
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Affiliation(s)
- Bartosz Kulczyński
- Department of Gastronomy Science and Functional Foods, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Andrzej Sidor
- Department of Gastronomy Science and Functional Foods, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Anna Brzozowska
- Department of Gastronomy Science and Functional Foods, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Anna Gramza-Michałowska
- Department of Gastronomy Science and Functional Foods, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland.
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Fitzpatrick NK, Capra S, Shore A, Briskey D, Jackman S, Bowtell J, Chachay V. Newly developed dietary assessment tools for lutein and zeaxanthin are correlated with 24-hour diet recalls, but are not a valid measure of intake in Australian and United Kingdom adults. Nutr Res 2024; 122:68-79. [PMID: 38185062 DOI: 10.1016/j.nutres.2023.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/09/2024]
Abstract
Habitual dietary intake measurement of carotenoids lutein and zeaxanthin (L/Z) has often been omitted or attempted with tools of unknown validity in past research. It was hypothesized that the dietary assessment tool, the L/Z screener, developed as part of this study, would be valid with agreement within 0.25 mg/day when compared against multiple 24-hour diet recalls in healthy Australian and United Kingdom adults. Two screeners with 91 food items were developed, 1 with a recall timeframe of a month and the other a week. Over 4 weeks, 56 Australian and 47 United Kingdom participants completed 4 weekly screeners, 2 monthly screeners, and eight 24-hour diet recalls. Validity was assessed through Bland-Altman plot analysis. L/Z intake measured by all tools was significantly correlated, with correlation coefficients from 0.58 to 0.83. Despite these correlations, the screeners were not valid, with poor Bland-Altman plot agreement when compared with the diet recalls. The Australian weekly screener performed best, demonstrating a mean difference of 0.51 mg/day and 95% limits of agreement between -1.46 mg/day and 2.49 mg/day of L/Z intake. Baby spinach, broccoli, and pumpkin provided the greatest proportion of L/Z intake. The low validity may be explained by high rates of misestimation or missed capture of moderate to high L/Z containing foods such as baby spinach. Prior research reliant on correlational statistics for L/Z tool validity should be interpreted with caution, and future screener development should prioritize accurate capture of high contribution foods.
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Affiliation(s)
- Naomi Kathleen Fitzpatrick
- School of Human Movement and Nutrition Sciences, The University of Queensland, Saint Lucia, Queensland, 4067, Australia.
| | - Sandra Capra
- School of Human Movement and Nutrition Sciences, The University of Queensland, Saint Lucia, Queensland, 4067, Australia
| | - Angela Shore
- NIHR Exeter Clinical Research Facility, University of Exeter, Royal Devon & Exeter Hospital, Exeter, EX2 5DW, United Kingdom
| | - David Briskey
- School of Human Movement and Nutrition Sciences, The University of Queensland, Saint Lucia, Queensland, 4067, Australia
| | - Sarah Jackman
- Sport and Health Sciences, St Luke's Campus, Exeter, EX1 2LU, United Kingdom
| | - Joanna Bowtell
- Sport and Health Sciences, St Luke's Campus, Exeter, EX1 2LU, United Kingdom
| | - Veronique Chachay
- School of Human Movement and Nutrition Sciences, The University of Queensland, Saint Lucia, Queensland, 4067, Australia
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Kai JY, Zhou M, Li DL, Zhu KY, Wu Q, Zhang XF, Pan CW. Smoking, dietary factors and major age-related eye disorders: an umbrella review of systematic reviews and meta-analyses. Br J Ophthalmol 2023; 108:51-57. [PMID: 36575624 DOI: 10.1136/bjo-2022-322325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND There is accumulating evidence of the associations between age-related eye diseases (AREDs) and smoking or dietary factors. We aimed to provide an umbrella review of the published literature pertaining to smoking or dietary intake as risk factors for major AREDs including cataract, glaucoma, age-related macular degeneration (AMD) and diabetic retinopathy. METHODS We searched for pertinent systematic reviews or meta-analyses in PubMed and Web of Science until 16 April 2022. We reperformed the meta-analysis of each association using random effects models. The heterogeneity and 95% prediction interval were calculated. The presence of small-study effect or excess significance bias was also assessed. RESULTS In total, 64 associations from 25 meta-analyses and 41 associations from 10 qualitative systematic reviews were evaluated. There was convincing (class I) evidence for only one association, namely current smoking and cataract. Two factors had highly suggestive (class II) evidence, namely ever smoking associated with cataract and fish consumption associated with AMD. We also found suggestive (class III) evidence for associations between the dietary intake of omega-3 polyunsaturated fatty acid, lutein, zeaxanthin, vitamin C and the risk of cataract. CONCLUSIONS Smoking as a risk factor for cataract was the most robust association we identified. We also identified several dietary elements associated with AREDs. Large prospective studies are warranted to further examine the associations discussed in this review. PROSPERO REGISTRATION NUMBER CRD42022339082.
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Affiliation(s)
- Jia-Yan Kai
- School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Miao Zhou
- Department of Ophthalmology, Peking University People's Hospital, Beijing, China
- Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China
| | - Dan-Lin Li
- School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Ke-Yao Zhu
- Pasteurien College of Soochow University, Suzhou, China
| | - Qian Wu
- School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Xiao-Feng Zhang
- Department of Ophthalmology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
| | - Chen-Wei Pan
- School of Public Health, Medical College of Soochow University, Suzhou, China
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Willms JO, Mitchell K, Shashtri M, Sundin O, Liu X, Panthagani P, Tran P, Navarro S, Sniegowski C, Shaik AA, Chaudhury T, Reid TW, Bergeson SE. Minocycline and Diacetyl Minocycline Eye Drops Reduce Ocular Neovascularization in Mice. Transl Vis Sci Technol 2023; 12:10. [PMID: 38064336 PMCID: PMC10709801 DOI: 10.1167/tvst.12.12.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 09/24/2023] [Indexed: 12/18/2023] Open
Abstract
Purpose To evaluate the efficacy of minocycline and a novel, modified minocycline analogue that lacks antimicrobial action, diacetyl minocycline (DAM), on choroidal neovascularization (CNV) in mice of both sexes. Methods CNV was induced via laser injury in female and male C57BL/6J mice. Minocycline, DAM, or saline was administered via topical eye drops twice a day for 2 weeks starting the day after laser injury. CNV volume was measured using immunohistochemistry labeling and confocal microscopy. Results Minocycline reduced lesion volume by 79% (P ≤ 0.0004) in female and male mice. DAM reduced lesion volume by 73% (P ≤ 0.001) in female and male mice. There was no significant difference in lesion volume between minocycline and DAM treatment groups or between female and male mice. Conclusions Both minocycline and DAM eye drops significantly reduced laser-induced CNV lesion volume in female and male mice. While oral tetracyclines have been shown to mitigate pathologic neovascularization in both preclinical studies and clinical trials, the present data are the first to suggest that tetracycline derivatives may be effective to reduce pathologic CNV when administered via topical eye drops. However, the action is unrelated to antimicrobial action. Targeted delivery of these medications via eye drops may reduce the potential for systemic side effects. Translational Relevance Topical administration of minocycline and/or DAM via eye drops may represent a novel therapeutic strategy for disorders involving pathologic CNV.
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Affiliation(s)
- Joshua O. Willms
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kelly Mitchell
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | | | - Olof Sundin
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Xiaobo Liu
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Praneetha Panthagani
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Phat Tran
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Stephany Navarro
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Colton Sniegowski
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Abdul A. Shaik
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Tristin Chaudhury
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Ted W. Reid
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Susan E. Bergeson
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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Rodriguez-Amaya DB, Esquivel P, Meléndez-Martínez AJ. Comprehensive Update on Carotenoid Colorants from Plants and Microalgae: Challenges and Advances from Research Laboratories to Industry. Foods 2023; 12:4080. [PMID: 38002140 PMCID: PMC10670565 DOI: 10.3390/foods12224080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/03/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
The substitution of synthetic food dyes with natural colorants continues to be assiduously pursued. The current list of natural carotenoid colorants consists of plant-derived annatto (bixin and norbixin), paprika (capsanthin and capsorubin), saffron (crocin), tomato and gac fruit lycopene, marigold lutein, and red palm oil (α- and β-carotene), along with microalgal Dunaliella β-carotene and Haematococcus astaxanthin and fungal Blakeslea trispora β-carotene and lycopene. Potential microalgal sources are being sought, especially in relation to lutein, for which commercial plant sources are lacking. Research efforts, manifested in numerous reviews and research papers published in the last decade, have been directed to green extraction, microencapsulation/nanoencapsulation, and valorization of processing by-products. Extraction is shifting from conventional extraction with organic solvents to supercritical CO2 extraction and different types of assisted extraction. Initially intended for the stabilization of the highly degradable carotenoids, additional benefits of encapsulation have been demonstrated, especially the improvement of carotenoid solubility and bioavailability. Instead of searching for new higher plant sources, enormous effort has been directed to the utilization of by-products of the fruit and vegetable processing industry, with the application of biorefinery and circular economy concepts. Amidst enormous research activities, however, the gap between research and industrial implementation remains wide.
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Affiliation(s)
- Delia B. Rodriguez-Amaya
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas 13083-862, SP, Brazil
| | - Patricia Esquivel
- Centro Nacional de Ciencia y Tecnología (CITA), Universidad de Costa Rica, San José 11501, Costa Rica;
- Escuela de Tecnología de Alimentos, Universidad de Costa Rica, San José 11501, Costa Rica
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Merle B. [Nutrition and age-related macular degeneration]. J Fr Ophtalmol 2023; 46:949-955. [PMID: 37758543 DOI: 10.1016/j.jfo.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023]
Abstract
Age-related macular degeneration (AMD) is the leading cause of vision loss in France and in other industrialized countries. AMD affects around 20 % of the population over the age of 80 years. This complex and multifactorial disease involves both genetic susceptibility and environmental factors. Smoking and nutrition are well-known modifiable risk factors for AMD. Numerous studies provide convincing arguments in favor of micronutrients to encourage dietary advice and the prescription of nutritional supplements containing antioxidant vitamins, lutein and omega-3 fatty acids. Attention to modifiable risk factors is of utmost importance to reduce progression to advanced AMD and associated medical and societal burdens.
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Affiliation(s)
- B Merle
- University of Bordeaux, Inserm, BPH, U1219, 33000 Bordeaux, France.
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Šimić D, Galić V, Jambrović A, Ledenčan T, Kljak K, Buhiniček I, Šarčević H. Genetic Variability in Carotenoid Contents in a Panel of Genebank Accessions of Temperate Maize from Southeast Europe. PLANTS (BASEL, SWITZERLAND) 2023; 12:3453. [PMID: 37836193 PMCID: PMC10575074 DOI: 10.3390/plants12193453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Carotenoids are an abundant group of lipid-soluble antioxidants in maize kernels. Maize is a key target crop for carotenoid biofortification focused on using conventional plant breeding in native germplasm of temperate areas traced back partially to traditional cultivars (landraces). In this study, the objectives were to determine the variability of lutein (LUT), zeaxanthin (ZEA), α-cryptoxanthin (αCX), β-cryptoxanthin (βCX), α-carotene (αC), and β-carotene (βC) contents in the grain of 88 accessions of temperate maize from the Croatian genebank, and to evaluate the relationships among the contents of different carotenoids as well as the relationships between kernel color and hardness and carotenoid content. Highly significant variability among the 88 accessions was detected for all carotenoids. On average, the most abundant carotenoid was LUT with 13.2 μg g-1 followed by ZEA with 6.8 μg g-1 dry matter. A Principal Component Analysis revealed a clear distinction between α- (LUT, αCX, and αC) and β-branch (ZEA; βCX, and βC) carotenoids. β-branch carotenoids were positively correlated with kernel color, and weakly positively associated with kernel hardness. Our results suggest that some genebank accessions with a certain percentage of native germplasm may be a good source of carotenoid biofortification in Southeast Europe. However, due to the lack of association between LUT and ZEA, the breeding process could be cumbersome.
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Affiliation(s)
- Domagoj Šimić
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (V.G.); (A.J.); (T.L.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
| | - Vlatko Galić
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (V.G.); (A.J.); (T.L.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
| | - Antun Jambrović
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (V.G.); (A.J.); (T.L.)
- Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
| | - Tatjana Ledenčan
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (V.G.); (A.J.); (T.L.)
| | - Kristina Kljak
- Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
| | - Ivica Buhiniček
- Bc Institute for Breeding and Production of Field Crops, Rugvica, Dugoselska 7, 10370 Dugo Selo, Croatia;
| | - Hrvoje Šarčević
- Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
- Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia;
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Amitrano C, Paglialunga G, Battistelli A, De Micco V, Del Bianco M, Liuzzi G, Moscatello S, Paradiso R, Proietti S, Rouphael Y, De Pascale S. Defining growth requirements of microgreens in space cultivation via biomass production, morpho-anatomical and nutritional traits analysis. FRONTIERS IN PLANT SCIENCE 2023; 14:1190945. [PMID: 37538067 PMCID: PMC10394706 DOI: 10.3389/fpls.2023.1190945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/29/2023] [Indexed: 08/05/2023]
Abstract
During long-term manned missions to the Moon or Mars, the integration of astronauts' diet with fresh food rich in functional compounds, like microgreens, could strengthen their physiological defenses against the oxidative stress induced by the exposure to space factors. Therefore, the development of targeted cultivation practices for microgreens in space is mandatory, since the cultivation in small, closed facilities may alter plant anatomy, physiology, and resource utilization with species-specific responses. Here, the combined effect of two vapor pressure deficit levels (VPD: 0.14 and 1.71 kPa) and two light intensities (150 and 300 µmol photons m-2 s-1 PPFD) on two species for microgreen production (Brassica oleracea var. capitata f. sabauda 'Vertus' and Raphanus raphanistrum subsp. sativus 'Saxa'), was tested on biomass production per square meter, morpho-anatomical development, nutritional and nutraceutical properties. Microgreens were grown in fully controlled conditions under air temperature of 18/24°C, on coconut fiber mats, RGB light spectrum and 12 h photoperiod, till they reached the stage of first true leaves. At this stage microgreens were samples, for growth and morpho-anatomical analyses, and to investigate the biochemical composition in terms of ascorbic acid, phenols, anthocyanin, carotenoids, carbohydrates, as well as of anti-nutritional compounds, such as nitrate, sulfate, and phosphate. Major differences in growth were mostly driven by the species with 'Saxa' always presenting the highest fresh and dry weight as well as the highest elongation; however light intensity and VPDs influenced the anatomical development of microgreens, and the accumulation of ascorbic acid, carbohydrates, nitrate, and phosphate. Both 'Saxa' and 'Vertus' at low VPD (LV) and 150 PPFD increased the tissue thickness and synthetized high β-carotene and photosynthetic pigments. Moreover, 'Vertus' LV 150, produced the highest content of ascorbate, fundamental for nutritional properties in space environment. The differences among the treatments and their interaction suggested a relevant difference in resource use efficiency. In the light of the above, microgreens can be considered suitable for cultivation in limited-volume growth modules directly onboard, provided that all the environmental factors are combined and modulated according to the species requirements to enhance their growth and biomass production, and to achieve specific nutritional traits.
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Affiliation(s)
- Chiara Amitrano
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
| | - Gabriele Paglialunga
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, Terni, Italy
| | - Alberto Battistelli
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, Terni, Italy
| | - Veronica De Micco
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
| | | | - Greta Liuzzi
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
| | - Stefano Moscatello
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, Terni, Italy
| | - Roberta Paradiso
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
| | - Simona Proietti
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, Terni, Italy
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
| | - Stefania De Pascale
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
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Ford NA, Spagnuolo P, Kraft J, Bauer E. Nutritional Composition of Hass Avocado Pulp. Foods 2023; 12:2516. [PMID: 37444254 DOI: 10.3390/foods12132516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Avocados (Persea americana) are a unique fruit that can provide health benefits when included in a healthy diet. As health care moves towards precision health and targeted therapies or preventative medicine, it is critical to understand foods and their dietary components. The nutritional composition and plant physiology of the Hass avocado is strikingly different from other fruits. This paper reviews the nutrient and bioactive composition of the edible portion of the Hass avocado (pulp) reported in the literature and from commercial lab analyses of the current market supply of fresh Hass avocados. These results provide comprehensive data on what nutrients and bioactives are in avocado and the quantity of these nutrients. We discuss the reasons for nutrient composition variations and review some potential health benefits of bioactive compounds found in Hass avocados.
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Affiliation(s)
- Nikki A Ford
- Avocado Nutrition Center, 25212 Marguerite Pkwy Ste. 250, Mission Viejo, CA 92692, USA
| | - Paul Spagnuolo
- Department of Food Science, University of Guelph, 50 Stone Rd., Guelph, ON N1G2W1, Canada
| | - Jana Kraft
- Department of Animal and Veterinary Sciences, The University of Vermont, 570 Main Street, Burlington, VT 05405, USA
| | - Ella Bauer
- Avocado Nutrition Center, 25212 Marguerite Pkwy Ste. 250, Mission Viejo, CA 92692, USA
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Li X, Holt RR, Keen CL, Morse LS, Zivkovic AM, Yiu G, Hackman RM. Potential roles of dietary zeaxanthin and lutein in macular health and function. Nutr Rev 2023; 81:670-683. [PMID: 36094616 DOI: 10.1093/nutrit/nuac076] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Lutein, zeaxanthin, and meso-zeaxanthin are three xanthophyll carotenoid pigments that selectively concentrate in the center of the retina. Humans cannot synthesize lutein and zeaxanthin, so these compounds must be obtained from the diet or supplements, with meso-zeaxanthin being converted from lutein in the macula. Xanthophylls are major components of macular pigments that protect the retina through the provision of oxidant defense and filtering of blue light. The accumulation of these three xanthophylls in the central macula can be quantified with non-invasive methods, such as macular pigment optical density (MPOD). MPOD serves as a useful tool for assessing risk for, and progression of, age-related macular degeneration, the third leading cause of blindness worldwide. Dietary surveys suggest that the dietary intakes of lutein and zeaxanthin are decreasing. In addition to low dietary intake, pregnancy and lactation may compromise the lutein and zeaxanthin status of both the mother and infant. Lutein is found in modest amounts in some orange- and yellow-colored vegetables, yellow corn products, and in egg yolks, but rich sources of zeaxanthin are not commonly consumed. Goji berries contain the highest known levels of zeaxanthin of any food, and regular intake of these bright red berries may help protect against the development of age-related macular degeneration through an increase in MPOD. The purpose of this review is to summarize the protective function of macular xanthophylls in the eye, speculate on the compounds' role in maternal and infant health, suggest the establishment of recommended dietary values for lutein and zeaxanthin, and introduce goji berries as a rich food source of zeaxanthin.
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Affiliation(s)
- Xiang Li
- are with the Department of Nutrition, UC Davis, Davis, California, USA
| | - Roberta R Holt
- are with the Department of Nutrition, UC Davis, Davis, California, USA
| | - Carl L Keen
- are with the Department of Nutrition, UC Davis, Davis, California, USA
- is with the Department of Internal Medicine, UC Davis, Sacramento, California, USA
| | - Lawrence S Morse
- are with the Department of Ophthalmology and Vision Science, UC Davis Medical Center, Sacramento, California, USA
| | - Angela M Zivkovic
- re with the Department of Nutrition, UC Davis, Davis, California, USA
| | - Glenn Yiu
- are with the Department of Ophthalmology and Vision Science, UC Davis Medical Center, Sacramento, California, USA
| | - Robert M Hackman
- are with the Department of Nutrition, UC Davis, Davis, California, USA
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Blue Light Exposure: Ocular Hazards and Prevention-A Narrative Review. Ophthalmol Ther 2023; 12:755-788. [PMID: 36808601 PMCID: PMC9938358 DOI: 10.1007/s40123-023-00675-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/01/2023] [Indexed: 02/21/2023] Open
Abstract
INTRODUCTION Exposure to blue light has seriously increased in our environment since the arrival of light emitting diodes (LEDs) and, in recent years, the proliferation of digital devices rich in blue light. This raises some questions about its potential deleterious effects on eye health. The aim of this narrative review is to provide an update on the ocular effects of blue light and to discuss the efficiency of methods of protection and prevention against potential blue light-induced ocular injury. METHODS The search of relevant English articles was conducted in PubMed, Medline, and Google Scholar databases until December 2022. RESULTS Blue light exposure provokes photochemical reactions in most eye tissues, in particular the cornea, the lens, and the retina. In vitro and in vivo studies have shown that certain exposures to blue light (depending on the wavelength or intensity) can cause temporary or permanent damage to some structures of the eye, especially the retina. However, currently, there is no evidence that screen use and LEDs in normal use are deleterious to the human retina. Regarding protection, there is currently no evidence of a beneficial effect of blue blocking lenses for the prevention of eye diseases, in particular age-related macular degeneration (AMD). In humans, macular pigments (composed of lutein and zeaxanthin) represent a natural protection by filtering blue light, and can be increased through increased intake from foods or food supplements. These nutrients are associated with lower risk for AMD and cataract. Antioxidants such as vitamins C, E, or zinc might also contribute to the prevention of photochemical ocular damage by preventing oxidative stress. CONCLUSION Currently, there is no evidence that LEDs in normal use at domestic intensity levels or in screen devices are retinotoxic to the human eye. However, the potential toxicity of long-term cumulative exposure and the dose-response effect are currently unknown.
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MORAND-LAFFARGUE L, HIRSCHBERG J, HALIMI C, DESMARCHELIER C, BOREL P. The zeaxanthin present in a tomato line rich in this carotenoid is as bioavailable as that present in the food sources richest in this xanthophyll. Food Res Int 2023; 168:112751. [PMID: 37120204 DOI: 10.1016/j.foodres.2023.112751] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/07/2023] [Accepted: 03/21/2023] [Indexed: 04/03/2023]
Abstract
It is strongly suspected that, like lutein, zeaxanthin (ZEA) plays a biological role in the human eye. Many studies also suggest that it could reduce the risk of age-related macular degeneration and improve cognition. Unfortunately, it is only present in a very limited number of foods. This is why a new tomato line, named "Xantomato", whose fruits can synthesize this compound, was generated. However, whether ZEA in Xantomato is bioavailable enough for Xantomato to qualify as a nutritionally relevant ZEA source is not known. The objective was to compare the bioaccessibility and intestinal cell uptake efficiency of ZEA from Xantomato to that present in the richest sources of this compound. Bioaccessibility was assessed using in vitro digestions and uptake efficiency using Caco-2 cells. Xantomato ZEA bioaccessibility was not statistically different from that of common fruits and vegetables rich in this compound. Xantomato ZEA uptake efficiency (7.8%) was lower (P < 0.05) than that of orange pepper (10.6%) but not different from that of corn (6.9%). Therefore, the results of the in vitro digestion/Caco-2 cell model suggest that Xantomato ZEA could be as bioavailable as that found in common food sources of this compound.
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Fukushima Y, Taguchi C, Kishimoto Y, Kondo K. Japanese carotenoid database with α- and β-carotene, β-cryptoxanthin, lutein, zeaxanthin, lycopene, and fucoxanthin and intake in adult women. INT J VITAM NUTR RES 2023; 93:42-53. [PMID: 33957770 DOI: 10.1024/0300-9831/a000707] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Carotenoid intake is associated with low mortality and cancer risks; data on non-provitamin carotenoid intake is limited especially in Asians. We aimed to estimate carotenoid intake in Japanese adult women. Carotenoid content database comprises 196 food items, including 39 fruits, 87 vegetables and mushrooms, and 11 seaweeds, and was established using data from the literature and analyses of foods available in Japan. We surveyed the intake of these foods in Japanese women aged 21-56 years (n=109). Total intake of 7 carotenoids (mean±SD [range]) was 7,450±3,840 (1,160-21,300) μg/day; α-carotene, β-carotene, β-cryptoxanthin, lutein, zeaxanthin, lycopene, and fucoxanthin represented 4.3%, 23%, 3.4%, 15%, 2.0%, 39%, and 13% of total intake, respectively. Lutein intake was 1,132±686 (294-3,490) μg/day; its best sources were spinach, cucumber, chicken egg, green onion, and Chinese chives, representing 51% of total intake. Lutein can be obtained from a variety of sources. Thus, lutein intake levels did not vary widely among individuals and very few individuals consumed insufficient levels of lutein. Intake of zeaxanthin, lycopene, and fucoxanthin was 149±93 (2-479), 2,890±2,970 (0-17,100), and 980±1,230 (0-5,660) μg/day, respectively. Their intake required rich sources including chicken egg for zeaxanthin (52%); tomato products for lycopene (98%), and wakame seaweed for fucoxanthin (76%). The carotenoid content database including all food items consumed in Japan will be helpful for further investigations on carotenoid intake and its health benefits.
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Affiliation(s)
| | - Chie Taguchi
- National Institute of Health Sciences, Kanagawa, Japan
| | - Yoshimi Kishimoto
- Department of Food Science and Human Nutrition, Faculty of Agriculture, Setsunan University, Osaka, Japan
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15
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Murphy CH, Duggan E, Davis J, O'Halloran AM, Knight SP, Kenny RA, McCarthy SN, Romero-Ortuno R. Plasma lutein and zeaxanthin concentrations associated with musculoskeletal health and incident frailty in The Irish Longitudinal Study on Ageing (TILDA). Exp Gerontol 2023; 171:112013. [PMID: 36336250 DOI: 10.1016/j.exger.2022.112013] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/20/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Lutein and zeaxanthin are diet-derived carotenoids that are proposed to help mitigate frailty risk and age-related declines in musculoskeletal health via their anti-oxidant and anti-inflammatory properties. Therefore, this study aimed to investigate the association between lutein and zeaxanthin status and indices of musculoskeletal health and incident frailty among community-dwelling adults aged ≥50 years in the Irish Longitudinal Study on Ageing (TILDA). METHODS Cross-sectional analyses (n = 4513) of plasma lutein and zeaxanthin concentrations and grip strength, usual gait speed, timed up-and-go (TUG), probable sarcopenia (defined as grip strength <27 kg in men, <16 kg in women), and bone mass (assessed using calcaneal broadband ultrasound stiffness index) were performed at Wave 1 (2009-2011; baseline). In the longitudinal analyses (n = 1425-3100), changes in usual gait speed (at Wave 3, 2014-2015), grip strength (Wave 4, 2016) and TUG (at Wave 5, 2018), incident probable sarcopenia (at Wave 4) and incident frailty (Fried's phenotype, Frailty Index, FRAIL Scale, Clinical Frailty Scale-classification tree, at Wave 5) were determined. Data were analysed using linear and ordinal logistic regression, adjusted for confounders. RESULTS Cross-sectionally, plasma lutein and zeaxanthin concentrations were positively associated with usual gait speed (B [95 % CI] per 100-nmol/L higher concentration: Lutein 0.59 [0.18, 1.00], Zeaxanthin 1.46 [0.37, 2.55] cm/s) and inversely associated with TUG time (Lutein -0.07 [-0.11, -0.03], Zeaxanthin -0.14 [-0.25, -0.04] s; all p < 0.01), but not with grip strength or probable sarcopenia (p > 0.05). Plasma lutein concentration was positively associated with bone stiffness index (0.54 [0.15, 0.93], p < 0.01). Longitudinally, among participants who were non-frail at Wave 1, higher plasma lutein and zeaxanthin concentrations were associated lower odds of progressing to a higher frailty category (e.g. prefrailty or frailty) by Wave 5 (ORs 0.57-0.89, p < 0.05) based on the Fried's phenotype, FRAIL Scale and the Clinical Frailty Scale, and in the case of zeaxanthin, Frailty Index. Neither plasma lutein nor zeaxanthin concentrations were associated with changes in musculoskeletal indices or incident probable sarcopenia (p > 0.05). CONCLUSION Higher plasma lutein and zeaxanthin concentrations at baseline were associated with a reduced likelihood of incident frailty after ~8 years of follow up. Baseline plasma lutein and zeaxanthin concentrations were also positively associated with several indices of musculoskeletal health cross-sectionally but were not predictive of longitudinal changes in these outcomes over 4-8 years.
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Affiliation(s)
- Caoileann H Murphy
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Teagasc Food Research Centre, Ashtown, Dublin, Ireland.
| | - Eoin Duggan
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - James Davis
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Aisling M O'Halloran
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Silvin P Knight
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Rose Anne Kenny
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | | | - Roman Romero-Ortuno
- The Irish Longitudinal Study of Ageing, Trinity College Dublin, Dublin, Ireland; Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, Dublin, Ireland
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Alsaqr A, Alharbi M, Aldossary N, Alruwished A, Alharbi M, Alghaib K, Alabdulkarim A, Alhamdan S, Almutleb E, Abusharha A. Assessment of macular pigment optical density in Arab population and its relationship to people's anthropometric data: a cross-sectional study. Ther Adv Ophthalmol 2023; 15:25158414231189099. [PMID: 37599800 PMCID: PMC10436989 DOI: 10.1177/25158414231189099] [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: 01/26/2023] [Accepted: 06/27/2023] [Indexed: 08/22/2023] Open
Abstract
Background Anthropometry facilitates the evaluation of risks associated with reduced macular pigment optical density (MPOD). Objectives To investigate the predictors and anthropometric indices associated with MPOD in healthy adult in Arab population. Design This is a cross-sectional study. Methods The MPOD was measured at 0.5° from fovea using a heterochromatic flicker photometer. Healthy participants aged between 20 and 40 years were recruited. The study evaluated the following data of the participants: height, weight, body mass index, body fat percentage, basal metabolic rate, visceral fat level, muscle mass, bone mineral content, and percentage of protein and body water. The correlation between MPOD with anthropometrics and demographic data was evaluated using Spearman's correlation test. The differences among genders were investigated using the Mann-Whitney U test. The smoking effect on MPOD was analyzed using the Friedman test. Results In all, 143 participants were recruited. The median ± interquartile range was calculated for age (23 ± 4 years), visual acuity (0.00 ± 0.00 logMAR), and MPOD (0.41 ± 0.18). The average MPOD was higher in males than in females but it was not statistically significant (p > 0.05); on the other hand, they were statistically significantly different in most of the anthropometric data. A significant relationship was found between MPOD and percentage of body fat, protein, and body water (r = 0.30, p < 0.05). The observed median MPOD value was higher in this study than that found in previous studies in white populations, but lower than that found in studies investigating Asian populations. Conclusion One of the most important risk factors of age-related macular degeneration is associated with a relative absence of macular pigment. This study brought into focus percentage of protein and body water for further studies as well as the well-established links with body fat and obesity. Unknown predictors of MPOD remain uncovered. The study also provided first report on normative values of MPOD for Arab population and confirmed the differences from other ethnicities.
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Affiliation(s)
- Ali Alsaqr
- Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
| | - Manal Alharbi
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Noura Aldossary
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz Alruwished
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Alharbi
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Khalid Alghaib
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Abeer Alabdulkarim
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Shatha Alhamdan
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Esam Almutleb
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Abusharha
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Dietary vitamins, carotenoids and their sources in relation to age-related macular degeneration risk in China: a population-based case-control study. Br J Nutr 2022; 129:1804-1811. [PMID: 35894297 DOI: 10.1017/s0007114522002161] [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: 11/07/2022]
Abstract
Mechanistic studies have suggested that antioxidants have beneficial effects on age-related macular degeneration (AMD). This study aimed to investigate the association between the types and sources of dietary vitamin and carotenoid intakes and AMD risk in China. A matched case-control study of 260 AMD cases and 260 matched controls was performed. The participants were interviewed for dietary information and potential confounders, and comprehensive ophthalmic examinations were performed. Conditional logistic models were used to estimate the odds ratio (OR) and 95 % confidence interval (CI) of specific vitamins and carotenoids and their main sources. When comparing the extreme quartiles, the ORs (95 % CI) were 0·30 (0·10, 0·88) for lutein and 0·28 (0·11, 0·74) for β-cryptoxanthin. The associations for other dietary vitamin and carotenoid intakes were generally weaker and non-significant. Higher intakes of spinach and egg, which are important sources of lutein, were associated with a reduced odds of AMD. ORs (95% CIs) comparing extreme categories were 0·42 (0·20, 0·88) for spinach and 0·52 (95% CI: 0·27, 0·98) for egg. Participants who were in the highest category of both egg intake and spinach intake had a much greater reduced odds of having AMD (OR: 0·23; 95% CI: 0·08, 0·71) than those in the lowest category of egg intake and spinach intake. In conclusion, a higher intake of lutein and lutein-rich foods was associated with a significantly decreased odds of AMD. These findings provide further evidence of the benefits of lutein and lutein-rich foods in the prevention of AMD.
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B Vitamins and Incidence of Advanced Age-Related Macular Degeneration: The Alienor Study. Nutrients 2022; 14:nu14142821. [PMID: 35889778 PMCID: PMC9318446 DOI: 10.3390/nu14142821] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 02/03/2023] Open
Abstract
B vitamins may protect against age-related macular degeneration (AMD). We evaluated the associations of dietary intake and serum vitamins with the incidence of advanced AMD in the Alienor study. The Alienor study is a prospective population-based cohort of 963 residents of Bordeaux, France, who were 73 years or older at baseline (2006-2008). Examinations were performed every two years over an eight-year period. The incidence of AMD is based on retinal fundus photographs and spectral-domain optical coherence tomography examinations. Among the 861 included participants, 93 developed incident AMD during a median follow-up time of 9.8 years. Participants with normal serum folate (≥10 nmol/L) significantly had a 51% reduced risk for AMD in the fully adjusted Cox model (HR, 0.49 [95% CI, 0.25-0.95], p = 0.036). Participants with a higher dietary intake of B5 and B6 vitamins had a lower risk for developing AMD of up to 28% (HR, 0.72 for 1-SD increase [0.53-0.99], p = 0.049; HR, 0.90 [0.81-0.99], p = 0.049, respectively). This cohort study of older adults suggests a strong association between a normal serum folate status, a high dietary intake of B5 and B6 and a lower risk for developing advanced AMD. Adopting a healthy diet rich in B vitamins may help to reduce vision loss due to AMD.
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Reynolds B, McGarvey B, Todd J. Agronomics of high density tobacco (Nicotiana tabacum) production for protein and chemicals in Canada. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Superior Bioavailability of a Novel Lutein and Zeaxanthin Formulation in Healthy Human Subjects. Ophthalmol Ther 2022; 11:1463-1477. [PMID: 35585428 PMCID: PMC9253220 DOI: 10.1007/s40123-022-00522-x] [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: 04/07/2022] [Accepted: 04/29/2022] [Indexed: 12/03/2022] Open
Abstract
Introduction Lutein (L) and zeaxanthin (Z) are carotenoids that are found in the macula of the human eye and are known to improve visual functions. However, poor bioavailability of supplemental L and Z poses a challenge to achieving significant benefits after consumption. We developed a novel patented formulation of L and Z (Ocusorb®) and demonstrated the improved bioavailability in a pharmacokinetic clinical study. Methods Ninety adult human volunteers were recruited in this randomized, double-blind, parallel, comparative bioavailability study. Volunteers were randomly assigned to receive single dose of 10 mg lutein and 2 mg zeaxanthin from test (LZO) or reference (LZC) formulations after breakfast. Blood samples were collected pre-dose at − 48, − 24, and 0 h and at 2, 4, 6, 8, 10, 12, 16, 20, 24, 48, and 72 h post-dose. Serum concentrations of L and Z were quantified by using a validated HPLC method. The LZO and LZC formulations were compared for L and Z on the basis of Cmax, AUC0–72, and AUC0–t. Results All 90 subjects completed the study. The LZO group demonstrated significantly higher levels of L and Z in serum at several time points as compared to LZC group. The LZO group showed significantly higher bioavailability for lutein (2.5 times higher Cmax, 2.9 times higher AUC0–72, and 3.2 times higher AUC0–t) and zeaxanthin (1.8 times higher Cmax, 2.2 times higher AUC0–72, and AUC0–t) as compared to the LZC group. No safety issues were reported. Conclusion The study results show superior bioavailability of lutein and zeaxanthin from our novel LZO formulation as compared to LZC. The enhanced bioavailability from the LZO formulation can be advantageous for individuals looking to quickly improve their L and Z status and enhance their vision performance. Trial Registration http://ctri.nic.in/. Identifier: CTRI/2019/11/022082.
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Iddir M, Vahid F, Merten D, Larondelle Y, Bohn T. Influence of Proteins on the Absorption of Lipophilic Vitamins, Carotenoids and Curcumin - A Review. Mol Nutr Food Res 2022; 66:e2200076. [PMID: 35506751 DOI: 10.1002/mnfr.202200076] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/26/2022] [Indexed: 12/13/2022]
Abstract
While proteins have been widely used to encapsulate, protect, and regulate the release of bioactive food compounds, little is known about the influence of co-consumed proteins on the absorption of lipophilic constituents following digestion, such as vitamins (A, D, E, K), carotenoids, and curcumin. Their bioavailability is often low and very variable, depending on the food matrix and host factors. Some proteins can act as emulsifiers during digestion. Their liberated peptides have amphiphilic properties that can facilitate the absorption of microconstituents, by improving their transition from lipid droplets into mixed micelles. Contrarily, the less well digested proteins could negatively impinge on enzymatic accessibility to the lipid droplets, slowing down their processing into mixed micelles and entrapping apolar food compounds. Interactions with mixed micelles and proteins are also plausible, as shown earlier for drugs. This review focuses on the ability of proteins to act as effective emulsifiers of lipophilic vitamins, carotenoids, and curcumin during digestion. The functional properties of proteins, their chemical interactions with enzymes and food constituents during gastro-intestinal digestion, potentials and limitations for their use as emulsifiers are emphasized and data from human, animal, and in vitro trials are summarized.
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Affiliation(s)
- Mohammed Iddir
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Science and Technology, 1 A-B, rue Thomas Edison, Strassen, L-1445, Luxembourg.,Louvain Institute of Biomolecular Science and Technology, UCLouvain, Louvain-la-Neuve, 1348, Belgium
| | - Farhad Vahid
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Science and Technology, 1 A-B, rue Thomas Edison, Strassen, L-1445, Luxembourg
| | - Diane Merten
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Science and Technology, 1 A-B, rue Thomas Edison, Strassen, L-1445, Luxembourg
| | - Yvan Larondelle
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Louvain-la-Neuve, 1348, Belgium
| | - Torsten Bohn
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Science and Technology, 1 A-B, rue Thomas Edison, Strassen, L-1445, Luxembourg
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Sasaki M, Miyagawa N, Harada S, Tsubota K, Takebayashi T, Nishiwaki Y, Kawasaki R. Dietary Patterns and Their Associations with Intermediate Age-Related Macular Degeneration in a Japanese Population. J Clin Med 2022; 11:jcm11061617. [PMID: 35329943 PMCID: PMC8955354 DOI: 10.3390/jcm11061617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 11/22/2022] Open
Abstract
This population-based cross-sectional study investigated the influence of dietary patterns on age-related macular degeneration (AMD) in a Japanese population. The Tsuruoka Metabolomics Cohort Study enrolled a general population aged 35–74 years from among participants in annual health check-up programs in Tsuruoka City, Japan. Eating habits were assessed using a food frequency questionnaire. Principal component analysis was used to identify dietary patterns among food items. The association between quartiles of scores for each dietary pattern and intermediate AMD was assessed using multivariate logistic regression models. Of 3433 participants, 415 had intermediate AMD. We identified four principal components comprising the Vegetable-rich pattern, Varied staple food pattern, Animal-rich pattern, and Seafood-rich pattern. After adjusting for potential confounders, higher Varied staple food diet scores were associated with a lower prevalence of intermediate AMD (fourth vs. first quartile) (OR, 0.63; 95% confidence interval [CI], 0.46–0.86). A significant trend of decreasing ORs for intermediate AMD associated with increasing Varied staple food diet scores was noted (p for trend = 0.002). There was no significant association between the other dietary patterns and intermediate AMD. In a Japanese population, individuals with a dietary pattern score high in the Varied staple food pattern had a lower prevalence of intermediate AMD.
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Affiliation(s)
- Mariko Sasaki
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan;
- Department of Ophthalmology, Tachikawa Hospital, Tokyo 190-8531, Japan
- National Institute of Sensory Organs, National Tokyo Medical Center, Tokyo 152-8902, Japan
- Correspondence:
| | - Naoko Miyagawa
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo 160-8582, Japan; (N.M.); (S.H.); (T.T.)
| | - Sei Harada
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo 160-8582, Japan; (N.M.); (S.H.); (T.T.)
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan;
| | - Toru Takebayashi
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo 160-8582, Japan; (N.M.); (S.H.); (T.T.)
| | - Yuji Nishiwaki
- Department of Environmental and Occupational Health, Toho University, Tokyo 143-8540, Japan;
| | - Ryo Kawasaki
- Department of Vision Informatics (Topcon), Osaka University Graduate School of Medicine, Osaka 565-0871, Japan;
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Cassani L, Marcovich NE, Gomez-Zavaglia A. Valorization of fruit and vegetables agro-wastes for the sustainable production of carotenoid-based colorants with enhanced bioavailability. Food Res Int 2022; 152:110924. [DOI: 10.1016/j.foodres.2021.110924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 12/11/2021] [Accepted: 12/20/2021] [Indexed: 12/21/2022]
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24
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Guo P, Zhang B, Zhao J, Wang C, Wang Z, Liu A, Du G. Medicine-Food Herbs against Alzheimer’s Disease: A Review of Their Traditional Functional Features, Substance Basis, Clinical Practices and Mechanisms of Action. Molecules 2022; 27:molecules27030901. [PMID: 35164167 PMCID: PMC8839204 DOI: 10.3390/molecules27030901] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/29/2021] [Accepted: 01/17/2022] [Indexed: 02/05/2023] Open
Abstract
Alzheimer’s disease (AD) is a progressive, neurodegenerative disorder that currently has reached epidemic proportions among elderly populations around the world. In China, available traditional Chinese medicines (TCMs) that organically combine functional foods with medicinal values are named “Medicine Food Homology (MFH)”. In this review, we focused on MFH varieties for their traditional functional features, substance bases, clinical uses, and mechanisms of action (MOAs) for AD prevention and treatment. We consider the antiAD active constituents from MFH species, their effects on in vitro/in vivo AD models, and their drug targets and signal pathways by summing up the literature via a systematic electronic search (SciFinder, PubMed, and Web of Science). In this paper, several MFH plant sources are discussed in detail from in vitro/in vivo models and methods, to MOAs. We found that most of the MFH varieties exert neuroprotective effects and ameliorate cognitive impairments by inhibiting neuropathological signs (Aβ-induced toxicity, amyloid precursor protein, and phosphorylated Tau immunoreactivity), including anti-inflammation, antioxidative stress, antiautophagy, and antiapoptosis, etc. Indeed, some MFH substances and their related phytochemicals have a broad spectrum of activities, so they are superior to simple single-target drugs in treating chronic diseases. This review can provide significant guidance for people’s healthy lifestyles and drug development for AD prevention and treatment.
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Affiliation(s)
- Pengfei Guo
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Baoyue Zhang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jun Zhao
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Chao Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zhe Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ailin Liu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- Correspondence: (A.L.); (G.D.)
| | - Guanhua Du
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (P.G.); (B.Z.); (J.Z.); (C.W.); (Z.W.)
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- Correspondence: (A.L.); (G.D.)
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Li SS, Wang HH, Zhang D. Efficacy of different nutrients in age-related macular degeneration: A systematic review and network meta-analysis. Semin Ophthalmol 2022; 37:515-523. [PMID: 34995151 DOI: 10.1080/08820538.2021.2022165] [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] [Indexed: 10/19/2022]
Abstract
AIM Age-related macular degeneration (AMD) has become a predominant global health concern. The visual function of individuals with AMD seems to improve with dietary antioxidants. We assessed the efficacy of different antioxidants (carotenoids, zinc, vitamin E, and multivitamin) on visual function and the incidence of developing late AMD. METHODS We searched PubMed, EMBASE, and Cochrane Central Register of Controlled Trials for related published studies. We considered randomized controlled trials (RCTs) comparing different nutrients. The main outcomes measurements included changes in visual acuity (VA), and the rate of developing late AMD. The network meta-analysis was registered on PROSPERO (CRD42020171288). RESULTS We identified 13 studies, including 85321 individuals randomly assigned to different nutrients or placebo groups. In the network meta-analysis, we found that there was more risk of progression to late AMD in the multivitamin group than carotenoids and vitamin E groups (RR 0.45, 95% CI 0.32 to 0.65; RR 0.56, 95% CI 0.40 to 0.79; RR 0.42, 95% CI 0.26 to 0.67). The nutrients of zinc and carotenoids (Lutein/Zeaxanthin) ranked first and second and showed better improvement in VA. The efficacy of carotenoids (β-carotene) ranked first for delaying the progress of AMD among all of the four treatments. CONCLUSION Taking multivitamin supplementation may not prevent the development of late AMD. The nutrient of zinc and carotenoids (lutein/zeaxanthin) supplementation were associated with better improvement in VA. Carotenoids (β-carotene) were the most likely to prevent the progression of late AMD.
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Affiliation(s)
- Shan-Shan Li
- Department of Ophthalmology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Hui-Hui Wang
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Dawei Zhang
- Department of Ophthalmology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
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26
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Goji Berry Intake Increases Macular Pigment Optical Density in Healthy Adults: A Randomized Pilot Trial. Nutrients 2021; 13:nu13124409. [PMID: 34959963 PMCID: PMC8708314 DOI: 10.3390/nu13124409] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/10/2021] [Accepted: 12/07/2021] [Indexed: 12/28/2022] Open
Abstract
Age-related macular degeneration (AMD) is the third leading cause of blindness worldwide. Macular pigment optical density (MPOD), a biomarker for AMD, is a non-invasive measure to assess risk. The macula xanthophyll pigments lutein (L) and zeaxanthin (Z) protect against blue light and provide oxidant defense, which can be indexed by MPOD. This study examined the effects of Z-rich goji berry intake on MPOD and skin carotenoids in healthy individuals. A randomized, unmasked, parallel-arm study was conducted with 27 participants, aged 45–65, who consumed either 28 g of goji berries or a supplement containing 6 mg L and 4 mg Z (LZ), five times weekly for 90 days. After 90 days, MPOD was significantly increased in the goji berry group at 0.25 and 1.75 retinal eccentricities (p = 0.029 and p = 0.044, respectively), while no changes were noted in the LZ group. Skin carotenoids were significantly increased in the goji berry group at day 45 (p = 0.025) and day 90 (p = 0.006), but not in the LZ group. Regular intake of goji berries in a healthy middle-aged population increases MPOD may help prevent or delay the development of AMD.
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Takemura M, Kubo A, Watanabe A, Sakuno H, Minobe Y, Sahara T, Murata M, Araki M, Harada H, Terada Y, Yaoi K, Ohdan K, Misawa N. Pathway engineering for high-yield production of lutein in Escherichia coli. Synth Biol (Oxf) 2021; 6:ysab012. [PMID: 34712837 PMCID: PMC8546607 DOI: 10.1093/synbio/ysab012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/06/2021] [Accepted: 05/15/2021] [Indexed: 11/15/2022] Open
Abstract
Lutein is an industrially important carotenoid pigment, which is essential for photoprotection and photosynthesis in plants. Lutein is crucial for maintaining human health due to its protective ability from ocular diseases. However, its pathway engineering research has scarcely been performed for microbial production using heterologous hosts, such as Escherichia coli, since the engineering of multiple genes is required. These genes, which include tricky key carotenoid biosynthesis genes typically derived from plants, encode two sorts of cyclases (lycopene ε- and β-cyclase) and cytochrome P450 CYP97C. In this study, upstream genes effective for the increase in carotenoid amounts, such as isopentenyl diphosphate isomerase (IDI) gene, were integrated into the E. coli JM101 (DE3) genome. The most efficient set of the key genes (MpLCYe, MpLCYb and MpCYP97C) was selected from among the corresponding genes derived from various plant (or bacterial) species using E. coli that had accumulated carotenoid substrates. Furthermore, to optimize the production of lutein in E. coli, we introduced several sorts of plasmids that contained some of the multiple genes into the genome-inserted strain and compared lutein productivity. Finally, we achieved 11 mg/l as lutein yield using a mini jar. Here, the high-yield production of lutein was successfully performed using E. coli through approaches of pathway engineering. The findings obtained here should be a base reference for substantial lutein production with microorganisms in the future.
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Affiliation(s)
- Miho Takemura
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Akiko Kubo
- Applied Research Laboratory, Ezaki Glico Co., Ltd., Osaka, Japan
| | - Asuka Watanabe
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Hanayo Sakuno
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Yuka Minobe
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Takehiko Sahara
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | | | | | - Hisashi Harada
- Faculty of Engineering, Tottori University, Tottori, Japan
| | - Yoshinobu Terada
- Mechanism-Based Research Laboratory, Ezaki Glico Co., Ltd., Osaka, Japan
| | - Katsuro Yaoi
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Kohji Ohdan
- Applied Research Laboratory, Ezaki Glico Co., Ltd., Osaka, Japan
| | - Norihiko Misawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
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Dziedziak J, Kasarełło K, Cudnoch-Jędrzejewska A. Dietary Antioxidants in Age-Related Macular Degeneration and Glaucoma. Antioxidants (Basel) 2021; 10:antiox10111743. [PMID: 34829613 PMCID: PMC8614766 DOI: 10.3390/antiox10111743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 12/15/2022] Open
Abstract
Age-related macular degeneration (AMD) and glaucoma are ophthalmic neurodegenerative diseases responsible for irreversible vision loss in the world population. Only a few therapies can be used to slow down the progression of these diseases and there are no available treatment strategies for reversing the degeneration of the neural retina. In AMD, the pathological process causes the malfunction and damage of the retinal pigmented epithelium and photoreceptors in the macula. In glaucoma, damage of the retinal ganglion cells and their axons is observed and treatment strategies are limited to intraocular pressure lowering. Therefore, other prophylactic and/or therapeutic methods are needed. Oxidative stress is involved in the neurodegenerative process accompanying both AMD and glaucoma; therefore, the use of antioxidant agents would clearly be beneficial, which is supported by the decreased prevalence and progression of AMD in patients adherent to a diet naturally rich in antioxidants. Dietary antioxidants are easily available and their use is based on the natural route of administration. Many preclinical studies both in vitro and using animal models of retinal degeneration showed the efficacy of dietary antioxidants, which was further proved in clinical trials. Resveratrol is beneficial both in AMD and glaucoma animal models, but confirmed only among AMD patients. For AMD, carotenoids and omega-3 fatty acids were also proved to be sufficient in preventing neurodegeneration. For glaucoma, coenzyme Q10 and alpha-lipoic acid showed efficacy for decreasing retinal ganglion cell loss and inhibiting the accompanying destructive processes. Interestingly, the benefits of vitamins, especially vitamin E was not confirmed, neither in preclinical nor in clinical studies.
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Yamaguchi Y, Zampino M, Tanaka T, Bandinelli S, Moaddel R, Fantoni G, Candia J, Ferrucci L, Semba RD. The Plasma Proteome Fingerprint Associated with Circulating Carotenoids and Retinol in Older Adults. J Nutr 2021; 152:40-48. [PMID: 34550359 PMCID: PMC8754576 DOI: 10.1093/jn/nxab340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/23/2021] [Accepted: 09/16/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Although diets rich in carotenoids are associated with reduced risks of cardiovascular disease, age-related macular degeneration, disability, and other adverse aging outcomes, the underlying biological mechanisms are not fully elucidated. OBJECTIVES To characterize the plasma proteome fingerprint associated with circulating carotenoid and retinol concentrations in older adults. METHODS In 728 adults ≥65 y participating in the Invecchiare in Chianti (InCHIANTI) Study, plasma α-carotene, β-carotene, β-cryptoxanthin, lutein, zeaxanthin, and lycopene were measured using HPLC. The SOMAscan assay was used to measure 1301 plasma proteins. Multivariable linear regression models were used to examine the relationship of individual carotenoids and retinol with plasma proteins. A false discovery rate approach was used to deal with multiple comparisons using a q-value < 0.05. RESULTS Plasma β-carotene, β-cryptoxanthin, lutein, zeaxanthin, and lycopene were associated with 85, 39, 4, 2, and 5 plasma proteins, respectively, in multivariable linear regression models adjusting for potential confounders (q < 0.05). No proteins were associated with α-carotene or retinol. Two or more carotenoids were positively associated with ferritin, 6-phosphogluconate dehydrogenase (decarboxylating), hepcidin, thrombospondin-2, and choline/ethanolamine kinase. The proteins associated with circulating carotenoids were related to energy metabolism, sirtuin signaling, inflammation and oxidative stress, iron metabolism, proteostasis, innate immunity, and longevity. CONCLUSIONS The plasma proteomic fingerprint associated with elevated circulating carotenoids in older adults provides insight into the mechanisms underlying the protective role of carotenoids on health.
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Affiliation(s)
| | - Marta Zampino
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Toshiko Tanaka
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | | | - Ruin Moaddel
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Giovanna Fantoni
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Julián Candia
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Luigi Ferrucci
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Richard D Semba
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Center for a Livable Future, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Lem DW, Davey PG, Gierhart DL, Rosen RB. A Systematic Review of Carotenoids in the Management of Age-Related Macular Degeneration. Antioxidants (Basel) 2021; 10:1255. [PMID: 34439503 PMCID: PMC8389280 DOI: 10.3390/antiox10081255] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 01/14/2023] Open
Abstract
Age-related macular degeneration (AMD) remains a leading cause of modifiable vision loss in older adults. Chronic oxidative injury and compromised antioxidant defenses represent essential drivers in the development of retinal neurodegeneration. Overwhelming free radical species formation results in mitochondrial dysfunction, as well as cellular and metabolic imbalance, which becomes exacerbated with increasing age. Thus, the depletion of systemic antioxidant capacity further proliferates oxidative stress in AMD-affected eyes, resulting in loss of photoreceptors, neuroinflammation, and ultimately atrophy within the retinal tissue. The aim of this systematic review is to examine the neuroprotective potential of the xanthophyll carotenoids lutein, zeaxanthin, and meso-zeaxanthin on retinal neurodegeneration for the purpose of adjunctive nutraceutical strategy in the management of AMD. A comprehensive literature review was performed to retrieve 55 eligible publications, using four database searches from PubMed, Embase, Cochrane Library, and the Web of Science. Epidemiology studies indicated an enhanced risk reduction against late AMD with greater dietary consumption of carotenoids, meanwhile greater concentrations in macular pigment demonstrated significant improvements in visual function among AMD patients. Collectively, evidence strongly suggests that carotenoid vitamin therapies offer remarkable synergic protection in the neurosensory retina, with the potential to serve as adjunctive nutraceutical therapy in the management of established AMD, albeit these benefits may vary among different stages of disease.
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Affiliation(s)
- Drake W. Lem
- College of Optometry, Western University of Health Sciences, Pomona, CA 91766, USA;
| | | | | | - Richard B. Rosen
- Department of Ophthalmology, New York Eye and Ear Infirmary of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
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Plasma Lutein, a Nutritional Biomarker for Development of Advanced Age-Related Macular Degeneration: The Alienor Study. Nutrients 2021; 13:nu13062047. [PMID: 34203817 PMCID: PMC8232705 DOI: 10.3390/nu13062047] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/01/2021] [Accepted: 06/08/2021] [Indexed: 11/17/2022] Open
Abstract
Lutein and zeaxanthin may lower the risk of age-related macular degeneration (AMD). We evaluated the associations of plasma lutein and zeaxanthin with the incidence of advanced AMD in the Alienor study (Antioxydants Lipides Essentiels Nutrition et Maladies Oculaires). Alienor study is a prospective population-based cohort of 963 residents of Bordeaux, France, who were 73 years or older at baseline (2006-2008). The present study included 609 participants with complete ophthalmologic and plasma carotenoids data. Examinations were performed every two years over an eight-year period (2006 to 2017). Plasma lutein and zeaxanthin were determined at baseline from fasting blood samples using high-performance liquid chromatography. Cox proportional hazard models were used to assess associations between plasma lutein, zeaxanthin, and their (total cholesterol (TC) + triglycerides (TG)) ratios with AMD. Among the 609 included participants, 54 developed advanced incident AMD during a median follow-up time of 7.6 years (range 0.7 to 10.4). Participants with higher plasma lutein had a reduced risk for incident advanced AMD in the fully adjusted model (HR = 0.63 per 1-SD increase (95% CI, 0.41-0.97), p = 0.03). A similar association was observed using the lutein/(TC + TG) ratio (HR = 0.59 (95% CI, 0.39-0.90), p = 0.01). No associations were evidenced for other carotenoids. Higher plasma lutein was associated with a 37% reduced risk of incident advanced AMD.
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McBurney MI, Blumberg JB, Costello RB, Eggersdorfer M, Erdman JW, Harris WS, Johnson EJ, Hazels Mitmesser S, Post RC, Rai D, Schurgers LJ. Beyond Nutrient Deficiency-Opportunities to Improve Nutritional Status and Promote Health Modernizing DRIs and Supplementation Recommendations. Nutrients 2021; 13:1844. [PMID: 34071268 PMCID: PMC8229216 DOI: 10.3390/nu13061844] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/13/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022] Open
Abstract
The US Dietary Guidelines for Americans (DGA) provide dietary recommendations to meet nutrient needs, promote health, and prevent disease. Despite 40 years of DGA, the prevalence of under-consumed nutrients continues in the US and globally, although dietary supplement use can help to fill shortfalls. Nutrient recommendations are based on Dietary Reference Intakes (DRIs) to meet the nutrient requirements for nearly all (97 to 98 percent) healthy individuals in a particular life stage and gender group and many need to be updated using current evidence. There is an opportunity to modernize vitamin and mineral intake recommendations based on biomarker or surrogate endpoint levels needed to 'prevent deficiency' with DRIs based on ranges of biomarker or surrogate endpoints levels that support normal cell/organ/tissue function in healthy individuals, and to establish DRIs for bioactive compounds. We recommend vitamin K and Mg DRIs be updated and DRIs be established for lutein and eicosapentaenoic and docosahexaenoic acid (EPA + DHA). With increasing interest in personalized (or precision) nutrition, we propose greater research investment in validating biomarkers and metabolic health measures and the development and use of inexpensive diagnostic devices. Data generated from such approaches will help elucidate optimal nutrient status, provide objective evaluations of an individual's nutritional status, and serve to provide personalized nutrition guidance.
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Affiliation(s)
- Michael I. McBurney
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1H 0B5, Canada
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA; (J.B.B.); (E.J.J.)
| | - Jeffrey B. Blumberg
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA; (J.B.B.); (E.J.J.)
| | | | - Manfred Eggersdorfer
- Department of Internal Medicine, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - John W. Erdman
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, IL 61801, USA;
| | - William S. Harris
- Department of Internal Medicine, University of South Dakota, Sioux Falls, SD 57105, USA;
- The Fatty Acid Research Institute, Sioux Falls, SD 57106, USA
| | - Elizabeth J. Johnson
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA; (J.B.B.); (E.J.J.)
| | | | - Robert C. Post
- FoodTrition Solutions, LLC, Hackettstown, NJ 07840, USA;
| | - Deshanie Rai
- Global Regulatory and Scientific Affairs, Omniactive Health Technologies, Morristown, NJ 07960, USA;
| | - Leon J. Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), University of Maastricht, 6200 MD Maastricht, The Netherlands;
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Carazo A, Macáková K, Matoušová K, Krčmová LK, Protti M, Mladěnka P. Vitamin A Update: Forms, Sources, Kinetics, Detection, Function, Deficiency, Therapeutic Use and Toxicity. Nutrients 2021; 13:1703. [PMID: 34069881 PMCID: PMC8157347 DOI: 10.3390/nu13051703] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/07/2021] [Accepted: 05/13/2021] [Indexed: 12/12/2022] Open
Abstract
Vitamin A is a group of vital micronutrients widely present in the human diet. Animal-based products are a rich source of the retinyl ester form of the vitamin, while vegetables and fruits contain carotenoids, most of which are provitamin A. Vitamin A plays a key role in the correct functioning of multiple physiological functions. The human organism can metabolize natural forms of vitamin A and provitamin A into biologically active forms (retinol, retinal, retinoic acid), which interact with multiple molecular targets, including nuclear receptors, opsin in the retina and, according to the latest research, also some enzymes. In this review, we aim to provide a complex view on the present knowledge about vitamin A ranging from its sources through its physiological functions to consequences of its deficiency and metabolic fate up to possible pharmacological administration and potential toxicity. Current analytical methods used for its detection in real samples are included as well.
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Affiliation(s)
- Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic;
| | - Kateřina Macáková
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic;
| | - Kateřina Matoušová
- Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic; (K.M.); (L.K.K.)
| | - Lenka Kujovská Krčmová
- Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic; (K.M.); (L.K.K.)
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Michele Protti
- The Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum–University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy;
| | - Přemysl Mladěnka
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic;
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The effects of lutein and zeaxanthin on resting state functional connectivity in older Caucasian adults: a randomized controlled trial. Brain Imaging Behav 2021; 14:668-681. [PMID: 30680611 DOI: 10.1007/s11682-018-00034-y] [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: 10/27/2022]
Abstract
The carotenoids lutein (L) and zeaxanthin (Z) accumulate in retinal regions of the eye and have long been shown to benefit visual health. A growing literature suggests cognitive benefits as well, particularly in older adults. The present randomized controlled trial sought to investigate the effects of L and Z on brain function using resting state functional magnetic resonance imaging (fMRI). It was hypothesized that L and Z supplementation would (1) improve intra-network integrity of default mode network (DMN) and (2) reduce inter-network connectivity between DMN and other resting state networks. 48 community-dwelling older adults (mean age = 72 years) were randomly assigned to receive a daily L (10 mg) and Z (2 mg) supplement or a placebo for 1 year. Resting state fMRI data were acquired at baseline and post-intervention. A dictionary learning and sparse coding computational framework, based on machine learning principles, was used to investigate intervention-related changes in functional connectivity. DMN integrity was evaluated by calculating spatial overlap rate with a well-established DMN template provided in the neuroscience literature. Inter-network connectivity was evaluated via time series correlations between DMN and nine other resting state networks. Contrary to expectation, results indicated that L and Z significantly increased rather than decreased inter-network connectivity (Cohen's d = 0.89). A significant intra-network effect on DMN integrity was not observed. Rather than restoring what has been described in the available literature as a "youth-like" pattern of intrinsic brain activity, L and Z may facilitate the aging brain's capacity for compensation by enhancing integration between networks that tend to be functionally segregated earlier in the lifespan.
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Papanikolaou Y, Fulgoni VL. Increasing Egg Consumption at Breakfast Is Associated with Increased Usual Nutrient Intakes: A Modeling Analysis Using NHANES and the USDA Child and Adult Care Food Program School Breakfast Guidelines. Nutrients 2021; 13:nu13041379. [PMID: 33923966 PMCID: PMC8073301 DOI: 10.3390/nu13041379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/11/2021] [Accepted: 04/15/2021] [Indexed: 01/05/2023] Open
Abstract
The objective of the current modeling analysis was three-fold: (1) to examine usual nutrient intakes in children when eggs are added into dietary patterns that typically do not contain eggs; (2) to examine usual nutrient intakes with the addition of eggs in the Child and Adult Care Food Program (CACFP) school breakfast; and (3) to examine nutrient adequacy when eggs are included in routine breakfast patterns and with the addition of eggs to the CACFP school breakfast program. Dietary recall data from the National Health and Nutrition Examination Survey 2011–2016 (children aged 1–18 years-old; n = 9254; CACFP n = 159) were used in the analysis. The usual intakes of pantothenic acid, riboflavin, selenium, and vitamin D increased ≥10 percent (relative to the baseline values) with the addition of one egg at breakfast. The usual intakes of protein and vitamin A at breakfast were also increased by more than 10 percent compared to the baseline values with the addition of two eggs. Similar outcomes were observed with the addition of eggs to the CACFP school breakfast. The percent of children above the adequate intake for total choline increased to 43.6 and 57.8% with one and two eggs, respectively, compared to 22.6% at the baseline. The addition of eggs at breakfast can contribute to nutrient intakes and overall dietary adequacy and play a role in public health initiatives aimed at increasing the intake of under-consumed nutrients and nutrients of concern.
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Affiliation(s)
- Yanni Papanikolaou
- Nutritional Strategies, Nutrition Research & Regulatory Affairs, 59 Marriott Place, Paris, ON N3L 0A3, Canada
- Correspondence: ; Tel.: +1-519-504-9252
| | - Victor L. Fulgoni
- Nutrition Impact, Nutrition Research, 9725 D Drive North, Battle Creek, MI 49014, USA;
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Zhang J, Jia G, Wanbin Z, Minghao J, Wei Y, Hao J, Liu X, Gan Z, Sun A. Nanoencapsulation of zeaxanthin extracted from Lycium barbarum L. by complex coacervation with gelatin and CMC. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106280] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Papanikolaou Y, Fulgoni VL. Modeling the Removal and Addition of Eggs in the Current US Diet is Linked to Choline and Lutein + Zeaxanthin Usual Intakes in Childhood. Curr Dev Nutr 2021; 5:nzaa181. [PMID: 33575524 PMCID: PMC7864766 DOI: 10.1093/cdn/nzaa181] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/15/2020] [Accepted: 12/10/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Limited data are available examining nutritional implications for removing/adding eggs in childhood dietary patterns. Additionally, usual intake data are lacking for choline and lutein + zeaxanthin in childhood. OBJECTIVES To determine usual intakes of choline and lutein + zeaxanthin in egg consumers and model the removal and addition of eggs within dietary patterns on choline and lutein + zeaxanthin intakes. METHODS Data from the NHANES, 2011-2014, were analyzed in egg consumers (infants, n = 130; children/adolescents, n = 980) of various age groups during childhood. Additionally, a modeling analysis was conducted to examine choline and lutein + zeaxanthin intake following the removal and addition of eggs to the current American diet of children. RESULTS Overall, modeling removal of eggs from the diet in all age groups examined showed decreases in choline intakes, resulting in significantly fewer subjects above the recommended Adequate Intake (AI) for choline. In contrast, the addition of 1 egg per week to the current American eating pattern resulted in nearly 10% more infants 6-23 months of age being above the AI for choline intake. The addition of 7 eggs per week to the current dietary pattern of infants would nearly achieve 100% of infants meeting the AI for choline. In children 2-8 years old, modeling an additional 7 eggs per week to the current dietary pattern resulted in approximately 94% of children being above the AI for choline, while the addition of 7 eggs per week increases the percentages above the AI to 23.0% and 52.4% in children aged 9-18 and 2-18 years, respectively. In children aged 2-8 and 2-18 years old, the addition of 7 eggs per week also showed meaningful increases in lutein + zeaxanthin usual intakes relative to the current dietary pattern (i.e., lutein + zeaxanthin increased from nearly 775 mcg/day to approximately 916 mcg/day and 780 mcg/day to approximately 931 mcg/day, respectively). CONCLUSIONS The current data support egg consumption as part of healthy dietary patterns to help meet established choline recommendations, while concurrently increasing lutein and zeaxanthin intakes in childhood.
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Affiliation(s)
- Yanni Papanikolaou
- Nutritional Strategies, Nutrition Research and Regulatory Affairs, Paris, Ontario, Canada
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Lopez C, Mériadec C, David-Briand E, Dupont A, Bizien T, Artzner F, Riaublanc A, Anton M. Loading of lutein in egg-sphingomyelin vesicles as lipid carriers: Thermotropic phase behaviour, structure of sphingosome membranes and lutein crystals. Food Res Int 2020; 138:109770. [PMID: 33292950 DOI: 10.1016/j.foodres.2020.109770] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/30/2020] [Accepted: 09/30/2020] [Indexed: 10/23/2022]
Abstract
Lutein is a xanthophyll carotenoid provided exclusively by the diet, that has protective functions and beneficial effects on human health. Supplementation in lutein is necessary to reach the recommended daily dietary intake. However, the introduction of lutein into foods and beverages is a real challenge since this lipophilic nutrient has a poor aqueous solubility and a low bioavailability. In this study, we investigated the capacity of egg-sphingomyelin (ESM) vesicles called sphingosomes to solubilise lutein into the bilayers. The thermal and structural properties of ESM bilayers were examined in presence of various amounts of lutein by differential scanning calorimetry (DSC) and temperature-controlled X-ray diffraction (XRD), the structures of sphingosomes and lutein crystals were observed by microscopic techniques. ESM bilayers were in the fluid Lα phase above the phase transition temperature Tm = 39.6 °C and in the lamellar ripple Pβ' phase below Tm where ESM sphingosomes exhibited ondulations and were facetted. Lutein molecules were successfully incorporated into the ESM bilayers where they induced a structural disorganisation. For ESM/lutein 90/10 %mol (91.8/8.2 %wt; 89 mg lutein / g ESM), lutein partitioning occured with the formation of lutein crystals in the aqueous phase together with lutein-loaded ESM vesicles. This study highlighted the capacity of new lipid carriers such as egg-sphingosomes to solubilise lutein and opens perspectives for the formulation of effective lutein-fortified functionnal foods and beverages providing health benefits.
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Affiliation(s)
- Christelle Lopez
- INRAE, BIA, 44316 Nantes, France; INRAE, STLO, 35000 Rennes, France.
| | | | | | - Aurélien Dupont
- Univ Rennes, CNRS, Inserm, BIOSIT - UMS 3480, US_S 018, 35000 Rennes, France
| | - Thomas Bizien
- Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin BP48, 91192 Gif-sur-Yvette, France
| | - Franck Artzner
- IPR, UMR 6251, CNRS, University of Rennes 1, 35042 Rennes, France
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Kulczyński B, Suliburska J, Rybarczyk M, Gramza-Michałowska A. The effect of osmotic dehydration conditions on the calcium content in plant matrice. Food Chem 2020; 343:128519. [PMID: 33160774 DOI: 10.1016/j.foodchem.2020.128519] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023]
Abstract
Osmotic dehydration is used as a pre-treatment before drying. This process can also be used as a method of modulation of the sensory values of plant components and fortifying them with selected components. The aim of this study was to examine the effect of osmotic dehydration as a method of pumpkin flesh 'Melon Yellow' (Cucurbita maxima) fortification with calcium. The studies showed for the first time that by selecting the appropriate process conditions it is possible to significantly increase the level of calcium in plant matrice. The highest calcium content was found in the pumpkin pulp dehydrated in 50% xylitol and inulin solutions with a calcium carbonate (5%), where the process was conducted for 120 min at 30 °C (1,380.4 and 1,328.4 mg Ca/100 g). Therefore, study has shown an innovative application of the osmotic dehydration process for the design of food with health-promoting properties, including for those at risk of osteoporosis.
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Affiliation(s)
- Bartosz Kulczyński
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland.
| | - Joanna Suliburska
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland.
| | - Monika Rybarczyk
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland.
| | - Anna Gramza-Michałowska
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland.
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Jurić S, Jurić M, Król-Kilińska Ż, Vlahoviček-Kahlina K, Vinceković M, Dragović-Uzelac V, Donsì F. Sources, stability, encapsulation and application of natural pigments in foods. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1837862] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Slaven Jurić
- Faculty of Agriculture, Department of Chemistry, University of Zagreb, Zagreb, Croatia
| | - Marina Jurić
- Faculty of Pharmacy and Biochemistry, Department of Pharmacognosy, University of Zagreb, Zagreb, Croatia
| | - Żaneta Król-Kilińska
- Department of Functional Food Products Development, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | | | - Marko Vinceković
- Faculty of Agriculture, Department of Chemistry, University of Zagreb, Zagreb, Croatia
| | - Verica Dragović-Uzelac
- Faculty of Food Technology and Biotechnology, Department of Food Engineering, University of Zagreb, Zagreb, Croatia
| | - Francesco Donsì
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
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Chew EY. Age-related Macular Degeneration: Nutrition, Genes and Deep Learning-The LXXVI Edward Jackson Memorial Lecture. Am J Ophthalmol 2020; 217:335-347. [PMID: 32574780 PMCID: PMC8324084 DOI: 10.1016/j.ajo.2020.05.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 12/23/2022]
Abstract
PURPOSE To evaluate the importance of nutritional supplements, dietary pattern, and genetic associations in age-related macular degeneration (AMD); and to discuss the technique of artificial intelligence/deep learning to potentially enhance research in detecting and classifying AMD. DESIGN Retrospective literature review. METHODS To review the studies of both prospective and retrospective (post hoc) analyses of nutrition, genetic variants, and deep learning in AMD in both the Age-Related Eye Disease Study (AREDS) and AREDS2. RESULTS In addition to demonstrating the beneficial effects of the AREDS and AREDS2 supplements of antioxidant vitamins and zinc (plus copper) for reducing the risk of progression to late AMD, these 2 studies also confirmed the importance of high adherence to Mediterranean diet in reducing progression of AMD in persons with varying severity of disease. In persons with the protective genetic alleles of complement factor H (CFH), the Mediterranean diet had further beneficial effect. However, despite the genetic association with AMD progression, prediction models found genetic information added little to the high predictive value of baseline severity of AMD for disease progression. The technique of deep learning, an arm of artificial intelligence, using color fundus photographs from AREDS/AREDS2 was superior in some cases and noninferior in others to clinical human grading (retinal specialists) and to the gold standard of the certified reading center graders. CONCLUSIONS Counseling individuals affected with AMD regarding the use of the AREDS2 supplements and the beneficial association of the Mediterranean diet is an important public health message. Although genetic testing is important in research, it is not recommended for prediction of disease or to guide therapies and/or dietary interventions in AMD. Techniques in deep learning hold great promise, but further prospective research is required to validate the use of this technique to provide improvement in accuracy and sensitivity/specificity in clinical research and medical management of patients with AMD.
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Affiliation(s)
- Emily Y Chew
- Clinical Trials Branch, Division of Epidemiology and Clinical Applications, National Eye Institute/National Institutes of Health, Bethesda, Maryland, USA.
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Agrón E, Mares J, Clemons TE, Swaroop A, Chew EY, Keenan TDL. Dietary Nutrient Intake and Progression to Late Age-Related Macular Degeneration in the Age-Related Eye Disease Studies 1 and 2. Ophthalmology 2020; 128:425-442. [PMID: 32858063 DOI: 10.1016/j.ophtha.2020.08.018] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 02/03/2023] Open
Abstract
PURPOSE To analyze associations between the dietary intake of multiple nutrients and risk of progression to late age-related macular degeneration (AMD), its subtypes, and large drusen. DESIGN Post hoc analysis of 2 controlled clinical trial cohorts: Age-Related Eye Disease Study (AREDS) and AREDS2. PARTICIPANTS Eyes with no late AMD at baseline among AREDS participants (n = 4504) and AREDS2 participants (n = 3738) totaled 14 135 eyes. Mean age was 71.0 years (standard deviation, 6.7 years), and 56.5% of patients were women. METHODS Fundus photographs were collected at annual study visits and graded centrally for late AMD. Dietary intake of multiple nutrients was calculated from food frequency questionnaires. MAIN OUTCOME MEASURES Progression to late AMD, geographic atrophy (GA), neovascular AMD, and (separate analyses) large drusen. RESULTS Over median follow-up of 10.2 years, of the 14 135 eyes, 32.7% progressed to late AMD. For 9 nutrients, intake quintiles 4 or 5 (vs. 1) were associated significantly (P ≤ 0.0005) with decreased risk of late AMD: vitamin A, vitamin B6, vitamin C, folate, β-carotene, lutein and zeaxanthin, magnesium, copper, and alcohol. For 3 nutrients, quintiles 4 or 5 were associated significantly with increased risk: saturated fatty acid, monounsaturated fatty acid, and oleic acid. Similar results were observed for GA. Regarding neovascular AMD, 9 nutrients were associated nominally with decreased risk-vitamin A, vitamin B6, β-carotene, lutein and zeaxanthin, magnesium, copper, docosahexaenoic acid, omega-3 fatty acid, and alcohol-and 3 nutrients were associated with increased risk-saturated fatty acid, monounsaturated fatty acid, and oleic acid. In separate analyses (n = 5399 eyes of 3164 AREDS participants), 12 nutrients were associated nominally with decreased risk of large drusen. CONCLUSIONS Higher dietary intake of multiple nutrients, including minerals, vitamins, and carotenoids, is associated with decreased risk of progression to late AMD. These associations are stronger for GA than for neovascular AMD. The same nutrients also tend to show protective associations against large drusen development. Strong genetic interactions exist for some nutrient-genotype combinations, particularly omega-3 fatty acids and CFH. These data may justify further research into underlying mechanisms and randomized trials of supplementation.
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Affiliation(s)
- Elvira Agrón
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Julie Mares
- Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin
| | | | - Anand Swaroop
- Neurobiology-Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Emily Y Chew
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland.
| | - Tiarnan D L Keenan
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland.
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Oxidative Stress and Vascular Dysfunction in the Retina: Therapeutic Strategies. Antioxidants (Basel) 2020; 9:antiox9080761. [PMID: 32824523 PMCID: PMC7465265 DOI: 10.3390/antiox9080761] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/11/2020] [Accepted: 08/14/2020] [Indexed: 12/14/2022] Open
Abstract
Many retinal diseases, such as diabetic retinopathy, glaucoma, and age-related macular (AMD) degeneration, are associated with elevated reactive oxygen species (ROS) levels. ROS are important intracellular signaling molecules that regulate numerous physiological actions, including vascular reactivity and neuron function. However, excessive ROS formation has been linked to vascular endothelial dysfunction, neuron degeneration, and inflammation in the retina. ROS can directly modify cellular molecules and impair their function. Moreover, ROS can stimulate the production of inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) causing inflammation and cell death. However, there are various compounds with direct or indirect antioxidant activity that have been used to reduce ROS accumulation in animal models and humans. In this review, we report on the physiological and pathophysiological role of ROS in the retina with a special focus on the vascular system. Moreover, we present therapeutic approaches for individual retinal diseases targeting retinal signaling pathways involving ROS.
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Eggs Are Cost-Efficient in Delivering Several Shortfall Nutrients in the American Diet: A Cost-Analysis in Children and Adults. Nutrients 2020; 12:nu12082406. [PMID: 32796704 PMCID: PMC7469040 DOI: 10.3390/nu12082406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/25/2020] [Accepted: 08/04/2020] [Indexed: 01/18/2023] Open
Abstract
The purpose of the current study was to examine the cost of eggs in relation to nutrient delivery in children and adults. The present analysis used dietary intake data from the National Health and Nutrition Examination Survey 2013–2016 (egg consumers: 2–18 years-old, N = 956; 19+ years-old, N = 2424). Inflation adjusted food cost and the cost of nutrients were obtained from the Center for Nutrition Promotion and Policy food cost database. Cost and nutrient profiles for What We Eat in America food categories were compared to whole eggs. Of the 15 main food groups examined, whole eggs ranked third for lowest cost per 100 g (excluding beverages), such that eggs cost 0.35 USD per 100 g, with dairy and grains representing the first and second most cost-efficient foods, at 0.23 USD and 0.27 USD per 100 g, respectively. In children and adults, eggs represented a cost-efficient food for protein delivery, such that eggs provided nearly 2.7% and 3.7% of all protein in the diet, respectively, at a cost of about 0.03 USD per g of protein. Eggs contributed 3.8% and 6.0% of all vitamin A in the diet of children and adults, at a cost of approximately 0.002 USD and 0.003 USD per RAE mcg of vitamin A, respectively. In children 2–18 years-old, nearly 12% of all choline in the diet is delivered from eggs, at a cost of approximately 0.002 USD per mg of choline. Similarly, in adults 19-years-old+, eggs provide nearly 15% of all dietary choline in the diet, at a cost of approximately 0.002 USD per mg of choline. Eggs provide nearly 5% and 9.5% of all vitamin D in the diet of children and adults, at a cost of approximately 0.21 USD and 0.22 USD per mcg of vitamin D, respectively. Overall, eggs ranked as the most cost-efficient food for delivering protein, choline, and vitamin A, second for vitamin E, and third for vitamin D in children. In adults, eggs ranked as the most cost-efficient food for delivering protein and choline, second for vitamin A, and third for vitamin D and vitamin E. In summary, eggs represent an economical food choice for the delivery of protein and several shortfall nutrients (choline, vitamin A, and vitamin D) in the American diet.
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Battaglia Parodi M, Brunoro A, Tomasso L, Scuderi G. Benefits of micronutrient supplementation for reducing the risk of wet age-related macular disease and diabetic retinopathy. Eur J Ophthalmol 2020; 30:780-794. [DOI: 10.1177/1120672120920537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Age-related macular disease and diabetic retinopathy are chronic degenerative diseases characterised by progressive visual impairment. In Europe, age-related macular disease accounts for over 15% of blindness in adults over 50 years of age, and although the burden of diabetic retinopathy in terms of vision impairment is lower, vision loss associated with diabetic retinopathy is increasing with the rising prevalence of diabetes mellitus and the ageing of the population. Late-stage age-related macular disease can be subdivided into dry (non-neovascular) or wet (neovascular or exudative) forms. The large Age-Related Eye Disease Study 2 showed that supplementation with antioxidant nutrients reduces choroids neovascularisation and reduces the risk of progression of neovascular age-related macular disease. Antioxidant micronutrient supplements have also shown promising results in preventing the pathogenesis of retinopathy in animal models of diabetes. Age-related macular disease and diabetic retinopathy are understood to share some common pathophysiological characteristics, suggesting that micronutrients have an important role in ocular health in both conditions. This article will review the current evidence for the utility of micronutrients in preventing the development and progression of neovascular age-related macular disease and diabetic retinopathy.
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Affiliation(s)
| | | | | | - Gianluca Scuderi
- Ophthalmology Unit, Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), St. Andrea Hospital, Sapienza University of Rome, Rome, Italy
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Ikonne EU, Ikpeazu VO, Ugbogu EA. The potential health benefits of dietary natural plant products in age related eye diseases. Heliyon 2020; 6:e04408. [PMID: 32685729 PMCID: PMC7355812 DOI: 10.1016/j.heliyon.2020.e04408] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/21/2020] [Accepted: 07/03/2020] [Indexed: 12/11/2022] Open
Abstract
In the past decade, there has been a tremendous increase in the number of cases of age-related eye diseases such as age-related macular degeneration (AMD), cataract, diabetic retinopathy and glaucoma. These diseases are the leading causes of visual impairment and blindness all over the world and are associated with many pathological risk factors such as aging, pollution, high levels of glucose (hyperglycaemia), high metabolic rates, and light exposure. These risk factors lead to the generation of uncontrollable reactive oxygen species (ROS), which causes oxidative stress. Oxidative stress plays a crucial role in the pathogenesis of age-related eye diseases through the activation of nuclear factor kappa B (NF-κB), vascular endothelial growth factor (VEGF), and lipid peroxidation, which leads to the production of inflammatory cytokines, angiogenesis, protein and DNA damages, apoptosis that causes macular degeneration (AMD), cataract, diabetic retinopathy and glaucoma. This review provides updated information on the beneficial effects of dietary natural plant products (DPNPs) against age-related eye diseases. In this review, supplementation of DPNPs demonstrated preventive and therapeutic effects on people at risk of or with age-related eye diseases due to their capacity to scavenge free radicals, ameliorate inflammatory molecules, neutralize the oxidation reaction that occurs in photoreceptor cells, decrease vascular endothelial growth factor and the blood-retinal barrier and increase the antioxidant defence system. However, further experiments and clinical trials are required to establish the daily doses of DPNPs that will safely and effectively prevent age-related eye diseases.
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Affiliation(s)
| | - Victor Okezie Ikpeazu
- Department of Biochemistry, Abia State University, P.M.B 2000, Uturu, Abia State, Nigeria
| | - Eziuche Amadike Ugbogu
- Department of Biochemistry, Abia State University, P.M.B 2000, Uturu, Abia State, Nigeria
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Huang CP, Lin YW, Huang YC, Tsai FJ. Mitochondrial Dysfunction as a Novel Target for Neuroprotective Nutraceuticals in Ocular Diseases. Nutrients 2020; 12:nu12071950. [PMID: 32629966 PMCID: PMC7400242 DOI: 10.3390/nu12071950] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022] Open
Abstract
The eyes require a rich oxygen and nutrient supply; hence, the high-energy demand of the visual system makes it sensitive to oxidative stress. Excessive free radicals result in mitochondrial dysfunction and lead to retinal neurodegeneration, as an early stage of retinal metabolic disorders. Retinal cells are vulnerable because of their coordinated interaction and intricate neural networks. Nutraceuticals are believed to target multiple pathways and have shown neuroprotective benefits by scavenging free radicals and promoting mitochondrial gene expression. Furthermore, encouraging results demonstrate that nutraceuticals improve the organization of retinal cells and visual functions. This review discusses the mitochondrial impairments of retinal cells and the mechanisms underlying the neuroprotective effects of nutraceuticals. However, some unsolved problems still exist between laboratory study and clinical therapy. Poor bioavailability and bioaccessibility strongly limit their development. A new delivery system and improved formulation may offer promise for health care applications.
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Affiliation(s)
- Chun-Ping Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Yi-Wen Lin
- Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Yu-Chuen Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Correspondence: (Y.-C.H.); (F.-J.T.)
| | - Fuu-Jen Tsai
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Children’s Hospital of China Medical University, Taichung 404, Taiwan
- Department of Medical Genetics, China Medical University Hospital, Taichung 404, Taiwan
- Correspondence: (Y.-C.H.); (F.-J.T.)
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Jones M, Whitton C, Tan AG, Holliday EG, Oldmeadow C, Flood VM, Sim X, Chai JF, Hamzah H, Klein R, Teo YY, Mitchell P, Wong TY, Tai ES, Van Dam RM, Attia J, Wang JJ. Exploring Factors Underlying Ethnic Difference in Age-related Macular Degeneration Prevalence. Ophthalmic Epidemiol 2020; 27:399-408. [PMID: 32511069 DOI: 10.1080/09286586.2020.1762229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AIMS To assess contributions of dietary and genetic factors to ethnic differences in AMD prevalence. DESIGN Population-based analytical study. METHODS In the Blue Mountains Eye Study, Australia (European ancestry n = 2826) and Multi-Ethnic Cohort Study, Singapore (Asian ancestry, n = 1900), AMD was assessed from retinal photographs. Patterns of dietary composition and scores of the Alternative Healthy Eating Index were computed using food frequency questionnaire data. Genetic susceptibility to AMD was determined using either single nucleotide polymorphisms (SNPs) of the complement factor H and age-related maculopathy susceptibility 2 genes, or combined odds-weighted genetic risk scores of 24 AMD-associated SNPs. Associations of AMD with ethnicity, diet, and genetics were assessed using logistic regression. Six potential mediators covering genetic, diet and lifestyle factors were assessed for their contributions to AMD risk difference between the two samples using mediation analyses. RESULTS Age-standardized prevalence of any (early or late) AMD was higher in the European (16%) compared to Asian samples (9%, p < .01). Mean AMD-related genetic risk scores were also higher in European (33.3 ± 4.4) than Asian (Chinese) samples (31.7 ± 3.7, p < .001). In a model simultaneously adjusting for age, ethnicity, genetic susceptibility and Alternative Healthy Eating Index scores, only age and genetic susceptibility were significantly associated with AMD. Genetic risk scores contributed 19% of AMD risk difference between the two samples while intake of polyunsaturated fatty acids contributed 7.2%. CONCLUSION Genetic susceptibility to AMD was higher in European compared to Chinese samples and explained more of the AMD risk difference between the two samples than the dietary factors investigated.
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Affiliation(s)
- Mark Jones
- , Hunter Medical Research Institute , Newcastle, NSW, Australia
| | - Clare Whitton
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore
| | - Ava G Tan
- Centre for Vision Research, Department of Ophthalmology, Westmead Institute for Medical Research, University of Sydney , Westmead, NSW, Australia
| | - Elizabeth G Holliday
- Centre for Clinical Epidemiology and Biostatistics, and School of Medicine and Public Health, University of Newcastle , Newcastle, NSW, Australia
| | - Christopher Oldmeadow
- , Hunter Medical Research Institute , Newcastle, NSW, Australia.,Centre for Clinical Epidemiology and Biostatistics, and School of Medicine and Public Health, University of Newcastle , Newcastle, NSW, Australia
| | - Victoria M Flood
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney , Sydney, NSW, Australia.,Westmead Hospital, Western Sydney Local Health District , Sydney, NSW, Australia
| | - Xueling Sim
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore
| | - Jin-Fang Chai
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore
| | - Haslina Hamzah
- Ocular Reading Centre, Singapore National Eye Centre , Singapore
| | - Ronald Klein
- Department of Ophthalmology & Visual Sciences, University of Wisconsin Medical School , Madison, Wisconsin, USA
| | - Yik-Ying Teo
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore
| | - Paul Mitchell
- Centre for Vision Research, Department of Ophthalmology, Westmead Institute for Medical Research, University of Sydney , Westmead, NSW, Australia
| | - Tien Y Wong
- Singapore Eye Research Institute, Singapore National Eye Center , Singapore.,Ophthalmology and Visual Science Academic Clinical Program, Duke-NUS Medical School , Singapore
| | - E Shyong Tai
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore , Singapore.,Cardiovascular and Metabolic Disease Signature Research Program, Duke-NUS Medical School , Singapore
| | - Rob M Van Dam
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System , Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore , Singapore.,Department of Nutrition, Harvard T.H. Chan School of Public Health , Boston, Massachusetts, USA
| | - John Attia
- , Hunter Medical Research Institute , Newcastle, NSW, Australia.,Centre for Clinical Epidemiology and Biostatistics, and School of Medicine and Public Health, University of Newcastle , Newcastle, NSW, Australia
| | - Jie Jin Wang
- Centre for Vision Research, Department of Ophthalmology, Westmead Institute for Medical Research, University of Sydney , Westmead, NSW, Australia.,Health Services and Systems Research, Duke-NUS Medical School , Singapore
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Schüler L, Greque de Morais E, Trovão M, Machado A, Carvalho B, Carneiro M, Maia I, Soares M, Duarte P, Barros A, Pereira H, Silva J, Varela J. Isolation and Characterization of Novel Chlorella Vulgaris Mutants With Low Chlorophyll and Improved Protein Contents for Food Applications. Front Bioeng Biotechnol 2020; 8:469. [PMID: 32509750 PMCID: PMC7248561 DOI: 10.3389/fbioe.2020.00469] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022] Open
Abstract
Microalgae are widely used as food supplements due to their high protein content, essential fatty acids and amino acids as well as carotenoids. The addition of microalgal biomass to food products (e.g., baked confectioneries) is a common strategy to attract novel consumers. However, organoleptic factors such as color, taste and smell can be decisive for the acceptability of foods supplemented with microalgae. The aim of this work was to develop chlorophyll-deficient mutants of Chlorella vulgaris by chemically induced random mutagenesis to obtain biomass with different pigmentations for nutritional applications. Using this strategy, two C. vulgaris mutants with yellow (MT01) and white (MT02) color were successfully isolated, scaled up and characterized. The changes in color of MT01 and MT02 mutant strains were due to an 80 and 99% decrease in their chlorophyll contents, respectively, as compared to the original wild type (WT) strain. Under heterotrophic growth, MT01 showed a growth performance similar to that of the WT, reaching a concentration of 5.84 and 6.06 g L−1, respectively, whereas MT02 displayed slightly lower growth (4.59 g L−1). When grown under a light intensity of 100 μmol m−2 s−1, the pigment content in MT01 increased without compromising growth, while MT02 was not able to grow under this light intensity, a strong indication that it became light-sensitive. The yellow color of MT01 in the dark was mainly due to the presence of the xanthophyll lutein. On the other hand, phytoene was the only carotenoid detected in MT02, which is known to be colorless. Concomitantly, MT02 contained the highest protein content, reaching 48.7% of DW, a 60% increase as compared to the WT. MT01 exhibited a 30% increase when compared to that of the WT, reaching a protein content of 39.5% of DW. Taken together, the results strongly suggest that the partial abrogation of pigment biosynthesis is a factor that might promote higher protein contents in this species. Moreover, because of their higher protein and lower chlorophyll contents, the MT01 and MT02 strains are likely candidates to be feedstocks for the development of novel, innovative food supplements and foods.
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Affiliation(s)
- Lisa Schüler
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | - Etiele Greque de Morais
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | | | | | | | - Mariana Carneiro
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering of the University of Porto, Porto, Portugal
| | - Inês Maia
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | - Maria Soares
- Allmicroalgae Natural Products S.A., Pataias, Portugal
| | - Paulo Duarte
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | - Ana Barros
- Allmicroalgae Natural Products S.A., Pataias, Portugal
| | - Hugo Pereira
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | - Joana Silva
- Allmicroalgae Natural Products S.A., Pataias, Portugal
| | - João Varela
- Marine Biotechnology Group, Centre of Marine Sciences, University of Algarve, Faro, Portugal
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Tisdale AK, Agrón E, Sunshine SB, Clemons TE, Ferris FL, Chew EY. Association of Dietary and Supplementary Calcium Intake With Age-Related Macular Degeneration: Age-Related Eye Disease Study Report 39. JAMA Ophthalmol 2020; 137:543-550. [PMID: 30896764 DOI: 10.1001/jamaophthalmol.2019.0292] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Importance Previous studies of the role of dietary and supplementary calcium in age-related macular degeneration (AMD) have produced mixed results, suggesting that supplementation and decreased dietary intake are both harmful. Objective To evaluate the association of baseline dietary and supplementary calcium intake with progression of AMD. Design, Setting, and Participants This study involved secondary analyses of participants enrolled in the Age-Related Eye Disease Study (AREDS). The AREDS study (1992-2001) enrolled patients from academic and community-based retinal practices in the United States. Men and women with varying severity of AMD were included. Data analysis for this article occurred from September 2015 to December 2018. Exposures Baseline self-reported dietary or supplementary calcium intake. Main Outcomes and Measures Development of late AMD, geographic atrophy (central or noncentral), or neovascular AMD detected on centrally graded baseline and annual fundus photographs. Results A total of 4751 participants were included (mean [SD] age, 69.4 [5.1] years); 4543 (95.6%) were white, and 2655 (55.9%) were female. Compared with those who were in the lowest quintile, the participants in the highest quintile of dietary calcium intake had a lower risk of developing late AMD (hazard ratio [HR], 0.73 [95% CI, 0.59-0.90]), central geographic atrophy (HR, 0.64 [95% CI, 0.48-0.86]), and any geographic atrophy (HR, 0.80 [95% CI, 0.64-1.00]). The participants in the highest tertile of supplementary calcium intake had a lower risk of developing neovascular AMD (HR, 0.70 [95% CI, 0.50-0.97]) compared with those who did not take calcium supplements. When stratified by sex, women in the highest quintile of dietary calcium intake had a lower risk of developing late AMD (HR, 0.73 [95% CI, 0.56-0.97]) compared with those in the lowest quintile. Women in the highest tertile of calcium supplementation had a lower risk of progression to neovascular AMD (HR, 0.67 [95% CI, 0.48-0.94]) compared with those who did not take calcium supplements. Similar findings were found in men for dietary calcium. Too few men took calcium supplements to allow for analyses. Conclusions and Relevance In this secondary analysis, higher levels of dietary and supplementary calcium intake were associated with lower incidence of progression to late AMD in AREDS participants. The results may be owing to uncontrolled confounding or chance and should be considered hypothesis development requiring additional study.
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Affiliation(s)
- Alanna K Tisdale
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Elvira Agrón
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Sarah B Sunshine
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | | | - Frederick L Ferris
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
| | - Emily Y Chew
- Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland
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