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Holthaus TA, Keye SA, Verma S, Cannavale CN, Burd NA, Holscher HD, Khan NA. Dietary patterns and carotenoid intake: Comparisons of MIND, Mediterranean, DASH, and Healthy Eating Index. Nutr Res 2024; 126:58-66. [PMID: 38615632 DOI: 10.1016/j.nutres.2024.03.008] [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: 01/08/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 04/16/2024]
Abstract
The Mediterranean-Dietary Approaches to Stop Hypertension (DASH) Intervention for Neurodegenerative Delay (MIND) dietary pattern is associated with reduced cognitive decline and dementia risk. However, the nutrient features that distinguish the MIND from other patterns are unknown. We investigated the relationship between accordance to the MIND pattern and carotenoid intake (phytonutrients hypothesized to confer neuroprotection) relative to the Mediterranean, DASH, and Healthy Eating Index (HEI-2020). We hypothesized that MIND diet accordance would be a stronger predictor of carotenoid intake relative to other diet indices. A total of 396 adults (aged 19-82 years) completed the Dietary History Questionnaire to assess carotenoid intake and adherence to each diet index. Stepwise regressions with adjustment for covariates followed by the Meng's Z-test were used to compare correlation strength between each diet pattern and carotenoid. All diet patterns were positively associated with lutein and zeaxanthin, β-carotene, α-carotene, and β-cryptoxanthin (all βs ≥0.38, Ps <.01). Effect size comparisons revealed that MIND accordance predicted a greater proportion of variance in lutein and zeaxanthin (all Zs ≥ 3.3, Ps < .001) and β-carotene (all Zs ≥ 2.6, Ps < .01) relative to the Mediterranean, DASH, and HEI-2020. MIND accordance explained a greater proportion of variance in α-carotene (Z = 3.8, P < .001) and β-cryptoxanthin (Z = 3.6, P < .001) relative to the HEI-2020. MIND diet accordance was disproportionately related to carotenoid intake, indicating the MIND index places greater emphasis on carotenoid-rich foods, particularly those containing lutein, zeaxanthin, and β-carotene, relative to other diet indices. Future research is needed to define the role of these carotenoids in nutritional interventions for cognitive health.
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Affiliation(s)
- Tori A Holthaus
- Division of Nutritional Sciences, University of Illinois, Louise Freer Hall, Urbana, IL 61801, USA
| | - Shelby A Keye
- Kinesiology and Community Health, University of Illinois, Louise Freer Hall, Urbana, IL 61801, USA
| | - Shreya Verma
- Kinesiology and Community Health, University of Illinois, Louise Freer Hall, Urbana, IL 61801, USA
| | - Corinne N Cannavale
- Kinesiology and Community Health, University of Illinois, Louise Freer Hall, Urbana, IL 61801, USA
| | - Nicholas A Burd
- Division of Nutritional Sciences; Kinesiology and Community Health, University of Illinois, Louise Freer Hall, Urbana, IL 61801, USA
| | - Hannah D Holscher
- Division of Nutritional Sciences; Department of Food Science and Human Nutrition, University of Illinois, Urbana, IL 61801, USA
| | - Naiman A Khan
- Neuroscience Program, Beckman Institute of Advanced Science and Technology, Division of Nutritional Sciences, Kinesiology and Community Health, University of Illinois, Urbana, IL, USA.
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Parekh R, Hammond BR, Chandradhara D. Lutein and Zeaxanthin Supplementation Improves Dynamic Visual and Cognitive Performance in Children: A Randomized, Double-Blind, Parallel, Placebo-Controlled Study. Adv Ther 2024; 41:1496-1511. [PMID: 38363462 PMCID: PMC10960892 DOI: 10.1007/s12325-024-02785-1] [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: 12/06/2023] [Accepted: 01/12/2024] [Indexed: 02/17/2024]
Abstract
INTRODUCTION Supplementation with dietary neuro-pigments lutein (L) and zeaxanthin (Z) has been shown to improve many aspects of visual and cognitive function in adults. In this study, we tested whether a similar intervention could improve such outcomes in preadolescent children. METHODS Sixty children (age range 5-12 years) were randomized in a 2:1 ratio in this double-blind, placebo-controlled clinical trial. Subjects were supplemented with gummies containing either a combination of 10 mg lutein and 2 mg zeaxanthin (LZ) or placebo for 180 days. Macular pigment optical density (MPOD) was the primary endpoint. The secondary endpoints included serum levels of L and Z, and brain-derived neurotrophic factor (BDNF), critical flicker fusion (CFF), eye strain and fatigue using visual analogue scales (VAS), Children's Sleep Habits Questionnaire-Abbreviated (CSHQ-A), and Creyos Health cognitive domains like attention, focus/concentration, episodic memory and learning, visuospatial working memory, and visuospatial processing speed. Safety was assessed throughout the study on the basis of physical examination, vital signs, clinical laboratory tests, and monitoring of adverse events. RESULTS The LZ group showed significant increases in MPOD at all visits post-supplementation, with significant increases as early as day 42 compared to placebo. The LZ group showed significant increases in serum lutein levels, reduced eye strain and fatigue, and improved cognitive performance (focus, episodic memory and learning, visuospatial working memory) at days 90 and 180 compared to placebo. Further, the LZ group showed significant increases in processing speed (CFF), attention, visuospatial processing, and serum Z and BDNF levels on day 180 compared to placebo. No safety concerns were observed. CONCLUSIONS Supplementing LZ resulted in increased MPOD levels, along with increased serum levels of L, Z, and BDNF. These changes were associated with improved visual and cognitive performances and reduction in eye strain and eye fatigue in the children receiving LZ gummies. The investigational product was safe and well tolerated. TRIAL REGISTRATION http://ctri.nic.in/ Identifier CTRI/2022/05/042364.
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Affiliation(s)
- Rajesh Parekh
- Sanjeevani Netralaya, Infantry Road (Bhagwan Mahaweer Road), Opp. The Hindu, Near Income Tax Office, Bengaluru, 560001, India
| | - Billy R Hammond
- Department of Psychology, UGA Psychology Department, University of Georgia, 125 Baldwin Street, Athens, GA, 30602, USA
| | - Divya Chandradhara
- Bioagile Therapeutics Pvt. Ltd., #2/5, Dahlia Building, 3rd Floor, 80 Feet Road, RMV 2nd Stage, Bengaluru, 560094, India.
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Hu W, Shankar P, Yao Y, Su X, Kim JE. Effect of xanthophyll-rich food and supplement intake on visual outcomes in healthy adults and those with eye disease: a systematic review, meta-analysis, and meta-regression of randomized controlled trials. Nutr Rev 2023; 82:34-46. [PMID: 37094947 DOI: 10.1093/nutrit/nuad037] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
CONTEXT Xanthophyll intake is known to improve eye health; however, its benefits on visual outcomes have not been systematically studied, particularly in a population with eye diseases. OBJECTIVE A systematic review, meta-analysis, and meta-regression were conducted to investigate the effect of xanthophyll intake on visual outcomes, and further subgroup analysis was performed on the basis of eye disease status. DATA SOURCES The PubMed, Scopus, Embase, CINAHL, Cochrane, and Web of Science databases were searched, and relevant randomized controlled trials were identified. DATA EXTRACTION For systematic review, meta-analysis, and meta-regression, 43, 25, and 21 articles were selected, respectively. DATA ANALYSIS Xanthophyll intake enhanced macular pigment optical density (MPOD) for both heterochromatic flicker photometry (weighted mean difference [WMD], 0.05; 95% confidence interval [CI], 0.03-0.07) and autofluorescence imaging (WMD, 0.08; 95%CI, 0.05-0.11) measurements and decreased photostress recovery time (WMD, -2.35; 95%CI, -4.49 to -0.20). While enhancement in visual acuity logarithm of the minimum angle of resolution was observed in response to the xanthophyll-rich food and supplement intake only for patients with eye disease (WMD, -0.04; 95%CI, -0.07 to -0.01). Meta-regression showed a positive correlation between change in MPOD (heterochromatic flicker photometry) and the corresponding change in serum lutein levels (regression coefficient = 0.068; P = 0.00). CONCLUSION Intake of xanthophyll-rich food or supplements can improve eye health. Additional improvement in visual acuity was observed in patients with eye disease. A positive association between MPOD and serum lutein level, while absent with dietary xanthophyll intake, suggests the importance of bioavailability when examining the effect of xanthophyll on eye health. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42021295337.
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Affiliation(s)
- Weili Hu
- are with the Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Pavitra Shankar
- are with the Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Yuanhang Yao
- are with the Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Xinyi Su
- is with the Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jung Eun Kim
- are with the Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
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Beathard KM, Georghiades N, Goulart JB, Riviere AJ, Sullivan C, Mascarro M, Riechman SE. The impact of nutrition on visual cognitive performance in the nutrition, vision, and cognition in sport study. Front Nutr 2023; 10:1208890. [PMID: 37426184 PMCID: PMC10327434 DOI: 10.3389/fnut.2023.1208890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/06/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction The purpose of this study was to examine the influence of nutritional intake on visual perceptual-cognitive performance (VCP) in young healthy adults. Methods Ninety-eight healthy men (n = 38) and women (n = 60) aged 18-33 years participated and maintained their usual dietary intake throughout the study. VCP was measured using the NeuroTracker™ CORE (NT) 3-Dimensional (3-D) software program (15 training sessions) over a 15-day period. Food logs and extensive lifestyle measures including body composition, cardiovascular health, sleep and exercise patterns, and general readiness to perform were collected. Mean intake from 10 food logs collected over the 15 days were analyzed using Nutribase software. Statistical analyses were performed in SPSS using repeated measures ANOVA including significant covariates when appropriate. Results Males consumed significantly more calories, macronutrients, cholesterol, choline, and zinc and performed significantly better on VCP than the females. Participants who consumed more than 40% of kcals from carbohydrates (p = 0.038), less than 24% of kcals from protein (p = 0.009), more than 2,000 μg/day lutein/zeaxanthin or more than 1.8 mg/ day vitamin B2 performed significantly better on VCP than those who consumed less than those amounts, respectively. Discussion VCP is an important dimension of cognitive function and in the present study is influenced by higher carbohydrate, lutein/ zeaxanthin, and vitamin B2 dietary intake while high protein consumption and the female sex negatively impacted VCP.
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Affiliation(s)
- Karen M. Beathard
- Department of Nutrition, Texas A&M University, College Station, TX, United States
| | - Nicos Georghiades
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States
| | - Jenna B. Goulart
- Department of Nutrition, Texas A&M University, College Station, TX, United States
| | - Aaron J. Riviere
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States
| | - Caroline Sullivan
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States
| | - Melanie Mascarro
- Department of Nutrition, Texas A&M University, College Station, TX, United States
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States
| | - Steven E. Riechman
- Department of Nutrition, Texas A&M University, College Station, TX, United States
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States
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Bhat I, Jose NM, Mamatha BS. Oxidative stability of lutein on exposure to varied extrinsic factors. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:987-995. [PMID: 36908359 PMCID: PMC9998772 DOI: 10.1007/s13197-022-05430-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/04/2022] [Accepted: 03/15/2022] [Indexed: 10/25/2022]
Abstract
Pre-processing treatments performed on lutein sources can cause it to degrade, generating superfluous metabolites and lowering lutein's bioactivity. However, evidences suggesting extent of reduction in functional stability of lutein on exposure to such treatment conditions are nil. This study is first of its kind, where we attempted to gain clarity on the extent of degradation caused by the changes in temperature (40-100 °C), pH (2-8) and duration of such treatments. Increase (3.9 folds) in lutein loss within an hour at 40 °C occurred when pH was lowered from 8 to 2. Increase (1.7 folds) in lutein loss at neutral pH and 40 °C occurred when duration of exposure was increased from 1 to 4 h. Besides, lutein loss significantly increased on rising the temperature by every 10 °C. The functional stability of lutein in relation to its degradation was also studied by monitoring its radical scavenging activity. While lutein is highly unstable, lutein structure and its respective bioactivity can be significantly (p < 0.05) retained (< 12.44% and > 54.87% respectively) by maintaining the operating conditions at higher pH (7-8) and lower temperatures (40-50 °C) for a short period of time (< 1 h). Supplementary Information The online version contains supplementary material available at 10.1007/s13197-022-05430-3.
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Affiliation(s)
- Ishani Bhat
- Nitte University Center for Science Education and Research (NUCSER), Nitte (Deemed to Be University), Paneer Campus, Deralakatte, Mangaluru, Karnataka 575018 India
| | - Nimmy Mol Jose
- Nitte University Center for Science Education and Research (NUCSER), Nitte (Deemed to Be University), Paneer Campus, Deralakatte, Mangaluru, Karnataka 575018 India
| | - Bangera Sheshappa Mamatha
- Nitte University Center for Science Education and Research (NUCSER), Nitte (Deemed to Be University), Paneer Campus, Deralakatte, Mangaluru, Karnataka 575018 India
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Dorey CK, Gierhart D, Fitch KA, Crandell I, Craft NE. Low Xanthophylls, Retinol, Lycopene, and Tocopherols in Grey and White Matter of Brains with Alzheimer's Disease. J Alzheimers Dis 2023; 94:1-17. [PMID: 35988225 PMCID: PMC10357197 DOI: 10.3233/jad-220460] [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] [Accepted: 07/14/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Oxidative stress contributes to pathogenesis and progression of Alzheimer's disease (AD). Higher levels of the dietary antioxidants- carotenoids and tocopherols- are associated with better cognitive functions and lower risk for AD, and lower levels of multiple carotenoids are found in serum and plasma of patients with AD. Although brains donated by individuals with mild cognitive impairment had significantly lower levels of lutein and beta-carotene, previous investigators found no significant difference in carotenoid levels of brains with AD and cognitively normal brains. OBJECTIVE This study tested the hypothesis that micronutrients are significantly lower in donor brains with AD than in healthy elderly brains. METHODS Samples of donor brains with confirmed AD or verified health were dissected into grey and white matter, extracted with organic solvents and analyzed by HPLC. RESULTS AD brains had significantly lower levels of lutein, zeaxanthin, anhydrolutein, retinol, lycopene, and alpha-tocopherol, and significantly increased levels of XMiAD, an unidentified xanthophyll metabolite. No meso-zeaxanthin was detected. The overlapping protective roles of xanthophylls, carotenes, α- and γ-tocopherol are discussed. CONCLUSION Brains with AD had substantially lower concentrations of some, but not all, xanthophylls, carotenes, and tocopherols, and several-fold higher concentrations of an unidentified xanthophyll metabolite increased in AD (XMiAD).
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Affiliation(s)
| | | | - Karlotta A. Fitch
- Alzheimer’s Disease Research Center, Massachusetts General Hospital Boston, MA, USA
| | - Ian Crandell
- Center for Biostatistics and Health Data Science, Virginia Tech, Roanoke, VA, USA
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Akuffo KO, Wooten BR, Ofori-Asare W, Osei Duah Junior I, Kumah DB, Awuni M, Obiri-Yeboah SR, Horthman SE, Addo EK, Acquah EA, Boateng BS, Johnson EJ. Macular Pigment, Cognition, and Visual Function in Younger Healthy Adults in Ghana. J Alzheimers Dis 2023; 94:405-413. [PMID: 37355904 DOI: 10.3233/jad-230233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2023]
Abstract
BACKGROUND Macular pigment optical density (MPOD) remains an indispensable biomarker to measure fruit and vegetable intake, with a biologically plausible correlation to vision and cognition. However, evidence in the sub-Saharan regions, including Ghana, is lacking. OBJECTIVE This study explored dietary carotenoid intake on MPOD and its influence on cognitive and visual function in a healthy Ghanaian sample. METHODS The MPOD of 301 healthy subjects (aged 21.1±1.9 years) was evaluated using the customized Macular DensitometerTM. A battery of cognitive tests and standard vision assessments were employed to assess cognition and visual function, respectively. Dietary lutein and zeaxanthin (L and Z) were estimated based on a twenty-four-hour repeated dietary recall. RESULTS The mean MPOD at 0.5° and 1.0° eccentricities were 0.37±0.16 and 0.34±0.15 optical density units, respectively. Dietary intake of L (4.06±10.54 mg/day) was considerably higher than Z (0.33±2.25 mg/day), with cumulative L+Z estimated at 4.39±11.58 mg/day. MPOD was not significantly influenced by demographic, dietary, and visual measures (p≥0.05). However, after statistical adjustment, we found a small but statistically significant positive relationship between F-A-S phonemic verbal fluency (Unstandardized co-efficient (β) = 0.002, p = 0.016) and the never consumed alcohol category (β= 0.062, p = 0.02) with MPOD. CONCLUSION The findings in this population showed significant positive relationships between measures of cognition and no alcohol intake, with MPOD. These findings necessitate dietary education to augment carotenoid intake and limit alcohol intake for better cognitive functioning.
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Affiliation(s)
- Kwadwo Owusu Akuffo
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Billy R Wooten
- Department of Psychology, Brown University, Providence, RI, USA
| | - Wendy Ofori-Asare
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Isaiah Osei Duah Junior
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Purdue University Biological Sciences, West Lafayette, IN, USA
| | - David Ben Kumah
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Moses Awuni
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Stephannie Rhoda Obiri-Yeboah
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Stacy Ewurama Horthman
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Emmanuel Kofi Addo
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Department of Ophthalmology and Visual Sciences, Moran Eye Centre, University of Utah, Salt Lake City, UT, USA
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
| | - Eldrick Adu Acquah
- Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Elizabeth J Johnson
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
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Jiao Y, Chen HD, Han H, Chang Y. Development and Utilization of Corn Processing by-Products: A Review. Foods 2022; 11:3709. [PMID: 36429301 PMCID: PMC9717738 DOI: 10.3390/foods11223709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 10/03/2023] Open
Abstract
As an important food crop, corn has an important impact on people's lives. The processing of corn produces many by-products, such as corn gluten meal, corn husk, and corn steep liquor, which are rich in protein, oil, carbohydrates, and other nutrients, all of which are inexpensive. Their accumulation in large quantities during the production process not only results in a burden on the environment but also the loss of potentially valuable food materials that can be processed. In fact, the by-products of corn processing have been partially used in functional foods, nutrients, feed, and other industries. There is no doubt that the secondary utilization of these by-products can not only solve the problem of waste pollution caused by them, but also produce high value-added products and improve the economic benefits of corn. This paper describes in detail the processing and higher-value utilization of the five main by-products: corn gluten meal, corn husks, corn steep liquor, corn germ, and fuel ethanol by-product. The utilization status of corn processing by-products was discussed roundly, and the development trend of corn processing by-products in China and other countries was analyzed, which provided the reference for the development of the corn deep processing industry.
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Affiliation(s)
| | | | | | - Ying Chang
- College of Food and Bioengineering, Qiqihar University, Qiqihar 161006, China
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Cannavale CN, Keye SA, Rosok L, Martell S, Holthaus TA, Reeser G, Raine LB, Mullen SP, Cohen NJ, Hillman CH, Hammond BR, Renzi-Hammond L, Khan NA. Enhancing children's cognitive function and achievement through carotenoid consumption: The Integrated Childhood Ocular Nutrition Study (iCONS) protocol. Contemp Clin Trials 2022; 122:106964. [PMID: 36252934 PMCID: PMC10150405 DOI: 10.1016/j.cct.2022.106964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/05/2022] [Accepted: 10/11/2022] [Indexed: 01/27/2023]
Abstract
Lutein and zeaxanthin (L + Z) are carotenoids that accumulate in neural tissue and potentially confer benefits to cognition. Whereas cross-sectional studies have revealed positive associations between macular carotenoids (MC) and cognition, no studies have investigated whether L + Z supplementation impacts MC and cognition in childhood. Accordingly, the Integrated Childhood Ocular Nutrition Study aims to investigate the impact of L + Z supplementation over 9-months on academic abilities, attentional control, memory, and MC among preadolescent children. Children 8-10 years (N = 288) will enroll in a 9-month double-blind, placebo-controlled, randomized trial. The study is registered and approved as a clinical trial on the U.S. National Library of Medicine http://ClinicalTrials.gov registry (NCT05177679). Participants will be randomized into an active (10 mg lutein+2 mg zeaxanthin) or waitlist placebo-controlled group. Primary outcomes include hippocampal-dependent memory, attentional inhibition, and academic achievement using a spatial reconstruction task, an Eriksen flanker task, and the Kaufman Test of Academic and Educational Achievement 3rd edition, respectively. Secondary outcomes include event-related brain potentials of attentional resource allocation and information processing speed (i.e., P3/P300 amplitude and latency) recorded during the flanker task. Macular pigment optical density (MPOD) will be assessed using heterochromatic flicker photometry. Cognitive assessments will be completed prior to and after completion of the supplementation period. MPOD will be quantified prior to, at the mid-point of (4-5 months), and after (9 months) the supplementation period. It is hypothesized that L + Z supplementation will improve cognition and academic achievement. Further, benefits for cognition and achievement are anticipated to be mediated by increases in MC among treatment group participants.
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Affiliation(s)
- Corinne N Cannavale
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Shelby A Keye
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Laura Rosok
- Neuroscience Program, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Shelby Martell
- Neuroscience Program, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Tori A Holthaus
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Ginger Reeser
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Lauren B Raine
- Department of Physical Therapy, Movement, and Rehabilitation Sciences, Northeastern University, Boston, MA, United States of America
| | - Sean P Mullen
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Beckman Institute for the Advancement of Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Illinois Informatics Institute, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Center for Social and Behavioral Science, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Neal J Cohen
- Neuroscience Program, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Department of Psychology, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Interdisciplinary Health Sciences Institute, University of Illinois Urbana-Champaign, Urbana, IL, United States of America
| | - Charles H Hillman
- Department of Psychology, Northeastern University, Boston, MA, United States of America; Department of Physical Therapy, Movement, and Rehabilitation Sciences, Northeastern University, Boston, MA, United States of America
| | - Billy R Hammond
- Department of Psychology, University of Georgia, Athens, GA, United States of America
| | - Lisa Renzi-Hammond
- Department of Psychology, University of Georgia, Athens, GA, United States of America; College of Public Health, University of Georgia, Athens, GA, United States of America
| | - Naiman A Khan
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Neuroscience Program, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, United States of America; Beckman Institute for the Advancement of Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States of America.
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Association between egg consumption and cognitive function among Chinese adults: long-term effect and interaction effect of iron intake. Br J Nutr 2022; 128:1180-1189. [PMID: 34736543 DOI: 10.1017/s0007114521004402] [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] [Indexed: 02/02/2023]
Abstract
The association between egg consumption and cognitive function is inclusive. We aimed to assess the association between egg consumption and cognitive function in Chinese adults and tested the interaction between egg consumption and Fe intake. The data used were from a nationwide sample (n 4852, age ≥ 55 years) from the China Health and Nutrition Survey between 1991 and 2006. Assessment of cognitive function was conducted in 1997, 2000, 2004 and 2006. Dietary egg intake was obtained by 24-h dietary recalls of 3 consecutive days during home visits between 1991 and 2006. Multivariable mixed linear regression and logistic regression were used. Egg intake was positively associated with global cognitive function. In fully adjusted models, across the quartiles of egg intake the regression coefficients were 0, 0·11 (95 % CI -0·28, 0·51), 0·79 (95 % CI 0·36, 1·22) and 0·92 (95 % CI 0·43, 1·41), respectively. There was a significant interaction between egg intake and Fe intake. The association between high egg intake and cognitive function was stronger among those with low Fe intake than those with high Fe intake. In addition, there was a significant interaction between egg consumption and sex, with the association mainly observed in women but not men. Furthermore, compared with non-consumers, those with higher egg consumption (Q4) had the OR of 0·93 (95 % CI 0·74, 1·19), 0·84 (95 % CI 0·69, 1·02) for self-reported poor memory and self-reported memory decline, respectively. Higher egg intake is associated with better cognition in Chinese adults among those with low Fe intake.
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Synthesis, Pharmacokinetic Characterization and Antioxidant Capacity of Carotenoid Succinates and Their Melatonin Conjugates. Molecules 2022; 27:molecules27154822. [PMID: 35956776 PMCID: PMC9369794 DOI: 10.3390/molecules27154822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 12/24/2022] Open
Abstract
Carotenoid succinates were synthesized from hydroxy carotenoids and were coupled to a commercially available derivative of melatonin via amide bond for producing more powerful anti-oxidants and yet new hybrid lipophilic bifunctional molecules with additional therapeutic effects. The coupling reactions produced conjugates in acceptable to good yields. Succinylation increased the water solubility of the carotenoids, while the conjugation with melatonin resulted in more lipophilic derivatives. The conjugates showed self-assembly in aqueous medium and yielded relatively stable colloidal solutions in phosphate-buffered saline. Antioxidant behavior was measured with ABTS and the FRAP methods for the carotenoids, the carotenoid succinates, and the conjugates with melatonin. A strong dependence on the quality of the solvent was observed. TEAC values of the new derivatives in phosphate-buffered saline were found to be comparable to or higher than those of parent carotenoids, however, synergism was observed only in FRAP assays.
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12
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Effect of macular pigment carotenoids on cognitive functions: A systematic review. Physiol Behav 2022; 254:113891. [PMID: 35752349 DOI: 10.1016/j.physbeh.2022.113891] [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: 03/15/2022] [Revised: 06/18/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022]
Abstract
Lutein and zeaxanthin-xanthophyll carotenoids with antioxidant and anti-inflammatory characteristics-are present in the retina and the brain. High concentrations of these carotenoids have been positively related to cognitive performance. Therefore, this systematic review analyses the relationship between macular pigment density and cognitive functions. Most relevant databases were scoured for studies on healthy people relating cognitive functions to macular pigment optical density (MPOD). There were no age, sex, or race limitations. PROSPERO registration: CRD42021254833. Nineteen studies were included, seven randomized controlled trials (RCT) and eleven observational studies. The general aim of the studies was to examine the association between carotenoids (lutein, meso‑zeaxanthin and zeaxanthin) and cognitive function. Most observational studies correlates MPOD levels with cognitive function or brain activity. Besides, RCTs compared the cognitive function and/or brain activity after increasing lutein and zeaxanthin intake though dietary supplementation or avocado consumption. Dietary lutein and zeaxanthin intake increased MPOD in six of the seven clinical trials and significantly improved most of the cognitive functions studied. A wide variety of test and methodologies for measuring cognitive functions were observed. Memory, processing speed, attention and reasoning were the cognitive function significantly related to MPOD levels in adults. Brain activity also was related to MPOD, but the results were inconsistent. Only four of the eleven observational studies were based on young people and all studies showed a significant relationship between MPOD and cognitive functions. This systematic review showed a direct relationship among cognitive functions, macular pigment and the intake of lutein and zeaxanthin.
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13
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Wang H, Wang G, Billings R, Li D, Haase SR, Wheeler PF, Vance DE, Li W. Can Diet Supplements of Macular Pigment of Lutein, Zeaxanthin, and Meso-zeaxanthin Affect Cognition? J Alzheimers Dis 2022; 87:1079-1087. [DOI: 10.3233/jad-215736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Lutein (L), zeaxanthin (Z), and meso-zeaxanthin (MZ) are collectively called macular pigment. MZ can be converted from L in the macula. In the recent decade, many studies have been performed to investigate the effects for taking carotenoids, especially L and Z or L, Z, and MZ, as diet supplements on human health. Objective: We examined if diet supplements of L + Z or L + Z + MZ have effects on cognitive function in adults. Methods: A systemic literature search was performed in March 2021 with the following keywords: lutein, zeaxanthin, meso-zeaxanthin, cognition, cognitive, and macular pigment. The searched databases included Medline EBSCOhost, Scopus, Elsevier, Cochrane Library, ProQuest, and ClinicalTrials.gov. Findings from eight clinical trials were presented as the strongest evidence on the studied topic. Results: Most studies have found that macular pigments (L + Z) in blood or macula are positively correlated with cognitive performance. As an index of the amount of macular pigments in the brain, macular pigment optical density is related to cognitive performance in adults. In addition, there is an inverse relationship between a higher amount of macular pigment in the blood and lower risk of mild cognitive impairments or Alzheimer’s disease. Based on the findings from the clinical trials, diet supplements of L + Z or L + Z + MZ are associated with improved cognition in adults. Conclusion: The diet supplements of L + Z or L + Z+MZ are associated with better cognitive functioning, which may be via their beneficial effects on the vision.
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Affiliation(s)
- Hongwei Wang
- Department of Physiology, Henan Chinese Medicine University, Zhengzhou, China
| | - Ge Wang
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rebecca Billings
- UAB Libraries, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Daniel Li
- University of California at Los Angeles, Los Angeles, CA, USA
| | - Shakaye R. Haase
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Pariya F. Wheeler
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David E. Vance
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Wei Li
- School of Health Professions, University of Alabama at Birmingham, Birmingham, AL, USA
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14
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Lopresti AL, Smith SJ, Drummond PD. The Effects of Lutein and Zeaxanthin Supplementation on Cognitive Function in Adults With Self-Reported Mild Cognitive Complaints: A Randomized, Double-Blind, Placebo-Controlled Study. Front Nutr 2022; 9:843512. [PMID: 35252311 PMCID: PMC8891800 DOI: 10.3389/fnut.2022.843512] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Abstract
Background Lutein and zeaxanthin are fat-soluble, dietary carotenoids with high concentrations in human brain tissue. There have been a number studies confirming an association between lutein and zeaxanthin and cognitive function. Purpose Examine the effects of lutein and zeaxanthin supplementation on cognitive function in adults with self-reported cognitive complaints. Study Design Two-arm, parallel-group, 6-month, randomized, double-blind, placebo-controlled trial. Methods Ninety volunteers aged 40–75 years received either 10 mg of lutein and 2 mg of zeaxanthin, once daily or a placebo. Outcome measures included computer-based cognitive tasks, the Cognitive Failures Questionnaire, Behavior Rating Inventory of Executive Function, Profile of Mood States, and the Patient-Reported Outcomes Measurement Information System-29. Results Compared to the placebo, lutein and zeaxanthin supplementation was associated with greater improvements in visual episodic memory (p = 0.005) and visual learning (p = 0.001). However, there were no other statistically-significant differences in performance on the other assessed cognitive tests or self-report questionnaires. Lutein and zeaxanthin supplementation was well-tolerated with no reports of significant adverse effects. Conclusion The results from this trial suggest that 6-months of supplementation with lutein and zeaxanthin may improve visual memory and learning in community-dwelling adults with self-reported cognitive complaints. However, it had no other effect on other computer-based measures of cognitive performance or self-report measures of cognition, memory, mood, or physical function.
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Affiliation(s)
- Adrian L. Lopresti
- Clinical Research Australia, Perth, WA, Australia
- Healthy Ageing Research Centre and Discipline of Psychology, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
- *Correspondence: Adrian L. Lopresti
| | - Stephen J. Smith
- Clinical Research Australia, Perth, WA, Australia
- Healthy Ageing Research Centre and Discipline of Psychology, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Peter D. Drummond
- Healthy Ageing Research Centre and Discipline of Psychology, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
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15
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do Nascimento-Silva NRR, Bastos RP, da Silva FA. Jambolan (Syzygium cumini (L.) Skeels)):A review on its nutrients, bioactive compounds and health benefits. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Morton SU, Leyshon BJ, Tamilia E, Vyas R, Sisitsky M, Ladha I, Lasekan JB, Kuchan MJ, Grant PE, Ou Y. A Role for Data Science in Precision Nutrition and Early Brain Development. Front Psychiatry 2022; 13:892259. [PMID: 35815018 PMCID: PMC9259898 DOI: 10.3389/fpsyt.2022.892259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/17/2022] [Indexed: 11/13/2022] Open
Abstract
Multimodal brain magnetic resonance imaging (MRI) can provide biomarkers of early influences on neurodevelopment such as nutrition, environmental and genetic factors. As the exposure to early influences can be separated from neurodevelopmental outcomes by many months or years, MRI markers can serve as an important intermediate outcome in multivariate analyses of neurodevelopmental determinants. Key to the success of such work are recent advances in data science as well as the growth of relevant data resources. Multimodal MRI assessment of neurodevelopment can be supplemented with other biomarkers of neurodevelopment such as electroencephalograms, magnetoencephalogram, and non-imaging biomarkers. This review focuses on how maternal nutrition impacts infant brain development, with three purposes: (1) to summarize the current knowledge about how nutrition in stages of pregnancy and breastfeeding impact infant brain development; (2) to discuss multimodal MRI and other measures of early neurodevelopment; and (3) to discuss potential opportunities for data science and artificial intelligence to advance precision nutrition. We hope this review can facilitate the collaborative march toward precision nutrition during pregnancy and the first year of life.
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Affiliation(s)
- Sarah U Morton
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States
| | | | - Eleonora Tamilia
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States
| | - Rutvi Vyas
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States
| | - Michaela Sisitsky
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States
| | - Imran Ladha
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States
| | | | | | - P Ellen Grant
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States.,Department of Radiology, Boston Children's Hospital, Boston, MA, United States
| | - Yangming Ou
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, United States.,Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States.,Department of Radiology, Boston Children's Hospital, Boston, MA, United States
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17
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Al-Hassan A, Vyas R, Zhang Y, Sisitsky M, Gagoski B, Litt JS, Larsen RJ, Kuchan MJ, Lasekan JB, Sutton BP, Grant PE, Ou Y, Morton SU. Assessment of Maternal Macular Pigment Optical Density (MPOD) as a Potential Marker for Dietary Carotenoid Intake during Lactation in Humans. Nutrients 2021; 14:nu14010182. [PMID: 35011057 PMCID: PMC8746783 DOI: 10.3390/nu14010182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/21/2021] [Accepted: 12/28/2021] [Indexed: 12/13/2022] Open
Abstract
Pregnancy and lactation can change the maternal nutrient reserve. Non-invasive, quantitative markers of maternal nutrient intake could enable personalized dietary recommendations that improve health outcomes in mothers and infants. Macular pigment optical density (MPOD) is a candidate marker, as MPOD values generally reflect carotenoid intake. We evaluated the association of MPOD with dietary and breastmilk carotenoids in postpartum women. MPOD measurements and dietary intake of five carotenoids were obtained from 80 mothers in the first three months postpartum. Breastmilk samples from a subset of mothers were analyzed to determine their nutrient composition. The association between MPOD and dietary or breastmilk carotenoids was quantitatively assessed to better understand the availability and mobilization of carotenoids. Our results showed that dietary α-carotene was positively correlated with MPOD. Of the breastmilk carotenoids, 13-cis-lutein and trans-lutein were correlated with MPOD when controlled for the total lutein in breastmilk. Other carotenoids in breastmilk were not associated with MPOD. Maternal MPOD is positively correlated with dietary intake of α-carotene in the early postpartum period, as well as with the breastmilk content of lutein. MPOD may serve as a potential marker for the intake of carotenoids, especially α-carotene, in mothers in the early postpartum period.
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Affiliation(s)
- Ateka Al-Hassan
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (A.A.-H.); (R.V.); (P.E.G.)
| | - Rutvi Vyas
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (A.A.-H.); (R.V.); (P.E.G.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
| | - Yue Zhang
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
| | - Michaela Sisitsky
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
| | - Borjan Gagoski
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Jonathan S. Litt
- Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA;
| | - Ryan J. Larsen
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (R.J.L.); (B.P.S.)
| | - Matthew J. Kuchan
- Nutrition and Brain Health, Clinical Research, Abbott Nutrition, Columbus, OH 43219, USA; (M.J.K.); (J.B.L.)
| | - John B. Lasekan
- Nutrition and Brain Health, Clinical Research, Abbott Nutrition, Columbus, OH 43219, USA; (M.J.K.); (J.B.L.)
| | - Brad P. Sutton
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (R.J.L.); (B.P.S.)
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Patricia Ellen Grant
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (A.A.-H.); (R.V.); (P.E.G.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Yangming Ou
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (A.A.-H.); (R.V.); (P.E.G.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
- Correspondence: (Y.O.); (S.U.M.)
| | - Sarah U. Morton
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (A.A.-H.); (R.V.); (P.E.G.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA; (Y.Z.); (M.S.); (B.G.)
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
- Correspondence: (Y.O.); (S.U.M.)
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18
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El-Baz FK, Abdel Jaleel GA, Hussein RA, Saleh DO. Dunalialla salina microalgea and its isolated zeaxanthin mitigate age-related dementia in rats: Modulation of neurotransmission and amyloid-β protein. Toxicol Rep 2021; 8:1899-1908. [PMID: 34926168 PMCID: PMC8648797 DOI: 10.1016/j.toxrep.2021.11.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/30/2021] [Accepted: 11/27/2021] [Indexed: 12/24/2022] Open
Abstract
D. salina as well as its isolated zeaxanthin showed marked recovery of the D-gal-induced effect on the escape latency time. D. salina exerted an amelioration in the brain Aβ contents and an increase in the brain 5-HT, NE and DOP levels. These effects were confirmed by histopathological increase in number of viable neurons in both cerebral cortex and hippocampus.
Age-related deterioration of sensorimotor and cognitive abilities suggests that the brain undergoes regressive alterations with aging that compromise its function. Thus, the present study was designed to assess the efficacy of Dunaliella salina in counteracting D-galactose (D-gal)-induced dementia brain aging and its modulatory role in attenuating amyloid β (Aβ) protein and neurotransmitters. Aging associated dementia was generated by injection of D-gal (200 mg/kg; i.p) of rats for 8 weeks. D. salina biomass (250 mg/kg), polar (30 mg/kg), its carotenoid (30 mg/kg) fractions as well as the isolated zeaxanthin (250 μg/kg) were given orally simultaneously with D-gal for additional two weeks. Twenty-four hours after the last treatment dose; behavioral, biochemical and histopathological assessment were performed. Results showed that oral treatment of motor deficit rats with D. salina biomass and its isolated polar and carotenoid fractions showed amelioration in the motor coordination assessed by the rotarod test and in the memory and learning capabilities evaluated by Morris water maze test. D. salina also showed a reduction in brain levels of inflammatory indicators viz. interlekin-1β and inducible nitric oxide synthetase as well as brain contents of Aβ protein and myelin base protein. Likewise, oral treatment with D. salina biomass and its isolated polar and carotenoid fractions exhibited an increase in the rats’ brain neurotransmitters and their metabolites. Furthermore, histopathological investigations have confirmed all of these results. Our findings suggest that D. salina overcomes brain aging and thereby repairs age-related dementia, both for its modulating function in attenuating the Aβ protein and neurotransmitters.
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Affiliation(s)
- Farouk K El-Baz
- Plant Biochemistry Department, National Research Centre (NRC), 33 El Buhouth St. (Former El Tahrir St.), Dokki, Giza, P.O.12622, Egypt
| | - Gehad A Abdel Jaleel
- Pharmacology Department, National Research Centre (NRC), 33 El Buhouth St. (Former El Tahrir St.), Dokki, Egypt
| | - Rehab A Hussein
- Pharmacognosy Department, National Research Centre (NRC), 33 El Buhouth St. (Former El Tahrir St.), Dokki, Giza P.O.12622, Egypt
| | - Dalia O Saleh
- Pharmacology Department, National Research Centre (NRC), 33 El Buhouth St. (Former El Tahrir St.), Dokki, Egypt
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19
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Jędrejko KJ, Lazur J, Muszyńska B. Cordyceps militaris: An Overview of Its Chemical Constituents in Relation to Biological Activity. Foods 2021; 10:2634. [PMID: 34828915 PMCID: PMC8622900 DOI: 10.3390/foods10112634] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 01/04/2023] Open
Abstract
Cordyceps spp. mushrooms have a long tradition of use as a natural raw material in Asian ethnomedicine because of their adaptogenic, tonic effects and their ability to reduce fatigue and stimulate the immune system in humans. This review aims to present the chemical composition and medicinal properties of Cordyceps militaris fruiting bodies and mycelium, as well as mycelium from in vitro cultures. The analytical results of the composition of C. militaris grown in culture media show the bioactive components such as cordycepin, polysaccharides, γ-aminobutyric acid (GABA), ergothioneine and others described in the review. To summarize, based on the presence of several bioactive compounds that contribute to biological activity, C. militaris mushrooms definitely deserve to be considered as functional foods and also have great potential for medicinal use. Recent scientific reports indicate the potential of cordycepin in antiviral activity, particularly against COVID-19.
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Affiliation(s)
| | | | - Bożena Muszyńska
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Str., 30–688 Kraków, Poland; (K.J.J.); (J.L.)
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20
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Dietary Lutein and Cognitive Function in Adults: A Meta-Analysis of Randomized Controlled Trials. Molecules 2021; 26:molecules26195794. [PMID: 34641336 PMCID: PMC8510423 DOI: 10.3390/molecules26195794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 09/03/2021] [Accepted: 09/21/2021] [Indexed: 11/17/2022] Open
Abstract
Emerging literature suggests that dietary lutein may have important functions in cognitive health, but there is not enough data to substantiate its effects in human cognition. The current study was intended to determine the overall effect of lutein on the main domains of cognition in the adult population based on available placebo randomized-controlled trials. Literature searches were conducted in PubMed, AGRICOLA, Scopus, MEDLINE, and EMBASE on 14 November 2020. The effect of lutein on complex attention, executive function and memory domains of cognition were assessed by using an inverse-variance meta-analysis of standardized mean differences (SMD) (Hedge’s g method). Dietary lutein was associated with slight improvements in cognitive performance in complex attention (SMD 0.02, 95% CI −0.27 to 0.31), executive function (SMD 0.13, 95% CI −0.26 to 0.51) and memory (SMD 0.03, 95% CI −0.26 to 0.32), but its effect was not significant. Change-from-baseline analysis revealed that lutein consumption could have a role in maintaining cognitive performance in memory and executive function. Although dietary lutein did not significantly improve cognitive performance, the evidence across multiple studies suggests that lutein may nonetheless prevent cognitive decline, especially executive function. More intervention studies are needed to validate the role of lutein in preventing cognitive decline and in promoting brain health.
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21
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Gazzolo D, Picone S, Gaiero A, Bellettato M, Montrone G, Riccobene F, Lista G, Pellegrini G. Early Pediatric Benefit of Lutein for Maturing Eyes and Brain-An Overview. Nutrients 2021; 13:3239. [PMID: 34579116 PMCID: PMC8468336 DOI: 10.3390/nu13093239] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 01/15/2023] Open
Abstract
Lutein is a dietary carotenoid preferentially accumulated in the eye and the brain in early life and throughout the life span. Lutein accumulation in areas of high metabolism and oxidative stress such as the eye and the brain suggest a unique role of this ingredient during the development and maturation of these organs of common embryological origin. Lutein is naturally provided to the developing baby via the cord blood, breast milk and then infant diet. The presence of this carotenoid depends on fruit and vegetable intakes and its bioavailability is higher in breastmilk. This paper aims to review the anatomical development of the eye and the brain, explore the presence and selective deposition of lutein in these organs during pregnancy and infancy and, based on its functional characteristics, present the latest available research on the beneficial role of lutein in the pediatric population. The potential effects of lutein in ameliorating conditions associated with increase oxidative stress such as in prematurity will be also addressed. Since consumption of lutein rich foods falls short of government guidelines and in most region of the world infant formulas lack this bioactive, dietary recommendations for pregnant and breastfeeding women and their child can help to bridge the gap.
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Affiliation(s)
- Diego Gazzolo
- Neonatal Intensive Care Unit, Department of Pediatrics, University G. d’Annunzio, 65100 Chieti, Italy
- Department of Pediatrics, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Simonetta Picone
- Neonatal Intensive Care Unit, Policlinico Casilino, 00169 Rome, Italy;
| | - Alberto Gaiero
- Pediatric and Neonatology Unit, asl2 Ospedale San Paolo Savona, 17100 Savona, Italy;
| | - Massimo Bellettato
- Department of Women and Child’s Health, San Bortolo Hospital, 36100 Vicenza, Italy;
| | - Gerardo Montrone
- S.S.V.D “NIDO E STEN” Ospedali Riuniti Foggia, 71122 Foggia, Italy;
| | | | - Gianluca Lista
- Neonatal Intensive Care Unit, Department of Pediatrics, Ospedale dei Bambini V. Buzzi, ASST-FBF-Sacco, 20154 Milan, Italy;
| | - Guido Pellegrini
- Department of Pediatrics and Neonatology, Presidio Ospedaliero “Città di Sesto San Giovanni, Sesto san Giovanni, 20099 Milan, Italy;
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22
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Macular Pigment Reflectometry: Developing Clinical Protocols, Comparison with Heterochromatic Flicker Photometry and Individual Carotenoid Levels. Nutrients 2021; 13:nu13082553. [PMID: 34444721 PMCID: PMC8399813 DOI: 10.3390/nu13082553] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/26/2022] Open
Abstract
The study was designed to: (1) Analyze and create protocols of obtaining measurements using the Macular Pigment Reflectometry (MPR). (2) To assess the agreement of MPOD measurements obtained using the heterochromatic flicker photometry (MPS II) and MPR. (3) To obtain the lutein and zeaxanthin optical density obtained using the MPR in the central one-degree of the macula. The measurements were performed using the MPR and heterochromatic flicker photometry. The MPR measurements were performed twice without pupillary dilation and twice following pupillary dilation. The MPR measurements were performed for a 40-s period and the spectrometer signal was parsed at different time points: 10–20, 10–30, 10–40, 20–30, 20–40, and 30–40 s. The MPR analyzes the high-resolution spectrometer signal and calculates MPOD, lutein optical density and zeaxanthin optical density automatically. The MPR-MPOD data was compared with MPPS II-MPOD results. The MPR-MPOD values are highly correlated and in good agreement with the MPS II-MPOD. Of the various parsing of the data, the data 10–30 interval was the best at obtaining the MPOD, lutein, and zeaxanthin values (8–12% coefficient of repeatability). The lutein to zeaxanthin ratio in the central one-degree of the macula was 1:2.40. Dilation was not needed to obtain the MPOD values but provided better repeatability of lutein and zeaxanthin optical density. MPR generates MPOD measurements that is in good agreement with MPS II. The device can produce lutein and zeaxanthin optical density which is not available from other clinical devices.
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Wilson LM, Tharmarajah S, Jia Y, Semba RD, Schaumberg DA, Robinson KA. The Effect of Lutein/Zeaxanthin Intake on Human Macular Pigment Optical Density: A Systematic Review and Meta-Analysis. Adv Nutr 2021; 12:2244-2254. [PMID: 34157098 PMCID: PMC8634499 DOI: 10.1093/advances/nmab071] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/15/2021] [Accepted: 05/11/2021] [Indexed: 01/05/2023] Open
Abstract
Lutein, zeaxanthin, and meso-zeaxanthin are the only carotenoids found in the human macula and may have a role in visual function. These carotenoids are reported to protect the retina, and thus vision, as antioxidants and by acting as a blue light filter. Our objective was to determine a minimum concentration of lutein/zeaxanthin intake that is associated with a statistically significant and/or clinically important change in macular pigment optical density (MPOD) among adults with healthy eyes. We searched Ovid MEDLINE, CENTRAL, and the Commonwealth of Agriculture Bureau for English-language studies through to July 2020. Two reviewers screened results to identify studies that evaluated supplements or dietary sources of lutein/zeaxanthin on MPOD among adults with healthy eyes. One reviewer extracted data and assessed strength of evidence, which was confirmed by a second reviewer. Two independent reviewers assessed the risk of bias. Meta-analyses were stratified by total lutein/zeaxanthin dose. We included 46 studies (N = 3189 participants; mean age = 43 y; 42% male). There was no statistically significant change in MPOD among studies evaluating <5 mg/d of total lutein/zeaxanthin intake which primarily assessed dietary interventions for 3-6 mo (pooled mean difference, 0.02; 95% CI: -0.01 to 0.05). The pooled mean increase in MPOD was 0.04 units (95% CI: 0.02 to 0.07) among studies evaluating 5 to <20 mg/d of lutein/zeaxanthin and was 0.11 units (95% CI: 0.06 to 0.16) among studies evaluating ≥20 mg/d of lutein/zeaxanthin for 3-12 mo. MPOD increased with lutein/zeaxanthin intake, particularly at higher doses, among adults with healthy eyes. The effects of lutein/zeaxanthin intake at doses <5 mg/d or from dietary sources is less clear. Increased lutein/zeaxanthin intake can help with maintaining ocular health. Future research is needed to determine the minimum dose and duration of lutein/zeaxanthin intake that is associated with a clinically important change in MPOD or visual function.
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Affiliation(s)
| | - Saraniya Tharmarajah
- Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Yuanxi Jia
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Richard D Semba
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Debra A Schaumberg
- Department of Ophthalmology & Visual Sciences, University of Utah School of Medicine, Salt Lake City, UT, USA,Evidera, Inc., Bethesda, MD, USA
| | - Karen A Robinson
- Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA,Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
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Genetic factors involved in modulating lutein bioavailability. Nutr Res 2021; 91:36-43. [PMID: 34134039 DOI: 10.1016/j.nutres.2021.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/20/2021] [Accepted: 04/27/2021] [Indexed: 11/24/2022]
Abstract
Lutein exhibits effective antioxidant activity conferring protective action against oxidative stress in age-related macular degeneration and cognitive decline. The inability to synthesize these compounds by the human body and the necessity to combat day-to-day oxidative stress prioritizes daily consumption of lutein. However, the bioavailability of the orally consumed lutein largely depends on its gastrointestinal absorption and subsequent metabolism which is in turn governed by various intrinsic and extrinsic factors. One of the most important yet least studied factors is the genetic make-up of an individual. The proteins that partake in the absorption, transportation, metabolism and excretion of lutein are encoded by the genes that experience inter-individual variability. Reports suggest that the unanimous effect of phenotypes resulting from such inter-individual variability in the genes of interest causes modulation of lutein bioavailability which is discussed in detail in this review article. However, despite the available reports, a community-based approach to a larger population is required to obtain a stronger understanding of the relationship between inter-individual variability among these genes and lutein bioavailability. Such an understanding of nutrigenetics could not only pave a way to decipher mechanisms that modulate lutein bioavailability but also help in setting the dosage requirements of each patient.
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Langhansova L, Pumprova K, Haisel D, Ekrt L, Pavicic A, Zajíčková M, Vanek T, Dvorakova M. European ferns as rich sources of antioxidants in the human diet. Food Chem 2021; 356:129637. [PMID: 33813205 DOI: 10.1016/j.foodchem.2021.129637] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 03/11/2021] [Accepted: 03/13/2021] [Indexed: 12/29/2022]
Abstract
Wild edible plants have become an attractive variation of the human diet, especially in East Asia, North America, and Oceania. However, their potential in nutrition is only rarely considered in Europe. This study aims to reveal the nutritional and antioxidant potential of mature fern leaves from 13 families grown in Europe. We found that most of the examined fern species displayed a high antioxidant capacity, exceeding 0.5 g Trolox equivalent per gram of extract dry weight in ORAC assay and reaching IC50 values lower than 30 µg·mL-1 in DPPH assay (with the value for Trolox 7 µg·mL-1). Most of the species also appeared to be a good source of carotenoids, especially of lutein (205 µg·g-1 DW on average) and β-carotene (161 µg·g-1 DW on average) when compared to the reference leafy vegetables spinach and rocket. A cytotoxicity test using ovine hepatocytes showed a non-toxicity effect of fern leaf extracts.
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Affiliation(s)
- Lenka Langhansova
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic.
| | - Karolina Pumprova
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic; Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Kamycka 129, CZ-16500 Prague, Czech Republic.
| | - Daniel Haisel
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic.
| | - Libor Ekrt
- University of South Bohemia, Faculty of Science, Branisovska 1760, CZ-37005, Ceske Budejovice, Czech Republic.
| | - Antonio Pavicic
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic; Charles University, Faculty of Pharmacy, Akademika Heyrovskeho 1203, CZ-50005 Hradec Kralove, Czech Republic.
| | - Markéta Zajíčková
- Charles University, Faculty of Pharmacy, Akademika Heyrovskeho 1203, CZ-50005 Hradec Kralove, Czech Republic.
| | - Tomas Vanek
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic.
| | - Marcela Dvorakova
- Czech Academy of Sciences, Institute of Experimental Botany, Rozvojova 263, CZ-16502 Prague, Czech Republic.
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Mahmassani HA, Switkowski KM, Scott TM, Johnson EJ, Rifas-Shiman SL, Oken E, Jacques PF. Maternal Intake of Lutein and Zeaxanthin during Pregnancy Is Positively Associated with Offspring Verbal Intelligence and Behavior Regulation in Mid-Childhood in the Project Viva Cohort. J Nutr 2021; 151:615-627. [PMID: 33484136 PMCID: PMC7948203 DOI: 10.1093/jn/nxaa348] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/05/2020] [Accepted: 10/12/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Lutein and zeaxanthin are carotenoids associated with better cognition at older age. To our knowledge, no previous study has evaluated their cognitive implications in the prenatal period, when the brain undergoes its most rapid development. OBJECTIVE The objective of this study was to examine associations of maternal lutein and zeaxanthin (L/Z) intake during pregnancy with child cognition. DESIGN Among 1580 mother-child pairs in Project Viva, a prospective cohort, we assessed maternal intake of L/Z during pregnancy using food frequency questionnaires and offspring cognition by the Visual Recognition Memory paradigm in infancy, the Peabody Picture Vocabulary Test and the Wide Range Assessment of Visual Motor Abilities (WRAVMA) in early childhood, and the Kaufman Brief Intelligence Test (KBIT-II), the WRAVMA drawing subtest, and the Wide Range Assessment of Memory and Learning in mid-childhood. Parents completed the Behavior Rating Inventory of Executive Function (BRIEF) and Strengths and Difficulties Questionnaire. RESULTS Mothers consumed a daily mean (SD) of 2.6 (2.0) mg L/Z in the first and second trimesters of pregnancy. Mean mid-childhood KBIT-II verbal scores were higher with greater maternal L/Z intake [difference of Q4-Q1 means for first trimester: 2.67 (95% CI: 0.13, 5.20) and for second trimester: 3.55 (95% CI: 0.81, 6.28)], indicating better verbal intelligence. Secondary analyses on cognitive subtests showed that mean mid-childhood BRIEF Behavioral Regulation Index scores were lower with greater maternal L/Z intake [difference of Q4-Q1 means for first trimester: -1.63 (95% CI: -3.22, -0.04) and for second trimester: -1.89 (95% CI: -3.58, -0.21)], indicating better behavior regulation ability. CONCLUSIONS Higher maternal L/Z intake during pregnancy was associated with better offspring verbal intelligence and behavior regulation ability in mid-childhood, suggesting a potential benefit during prenatal development. We did not find a benefit of higher maternal L/Z intake on other child cognitive or behavioral outcomes. Project Viva is registered at clinicaltrials.gov as NCT02820402.
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Affiliation(s)
- Hiya A Mahmassani
- Dorothy J and Gerald R Friedman School of Nutrition and Science Policy at Tufts University, Boston, MA, USA
| | - Karen M Switkowski
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Tammy M Scott
- Dorothy J and Gerald R Friedman School of Nutrition and Science Policy at Tufts University, Boston, MA, USA
| | - Elizabeth J Johnson
- Dorothy J and Gerald R Friedman School of Nutrition and Science Policy at Tufts University, Boston, MA, USA
| | - Sheryl L Rifas-Shiman
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Paul F Jacques
- Dorothy J and Gerald R Friedman School of Nutrition and Science Policy at Tufts University, Boston, MA, USA
- Jean Mayer–USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
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Ciudad-Mulero M, Matallana-González MC, Cámara M, Fernández-Ruiz V, Morales P. Antioxidant Phytochemicals in Pulses and their Relation to Human Health: A Review. Curr Pharm Des 2020; 26:1880-1897. [PMID: 32013818 DOI: 10.2174/1381612826666200203130150] [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: 10/14/2019] [Accepted: 12/30/2019] [Indexed: 01/22/2023]
Abstract
Pulses are a staple food cultivated since ancient times, which play an important role in the human diet. From a nutritional point of view, pulses are very interesting foods as they are rich in proteins, carbohydrates and dietary fibre. Dietary antioxidants are a complex mixture of hydrophilic and lipophilic compounds usually present in foods of plant origin, including pulses. In the present study, the phytochemical composition of selected pulses (common beans, fava beans, lentils, chickpeas, peas and lupins) has been reviewed in terms of their content of antioxidant compounds. The content of hydrosoluble antioxidants (organic acids, phenolic compounds), liposoluble antioxidants (tocopherols, carotenoids) and other compounds which exert antioxidant properties, such as dietary fibre and minerals (zinc, selenium), has been studied, reporting that pulses are an interesting source of these compounds, which have important health benefits, including a preventing role in cardiovascular diseases, anticarcinogenic or neuroprotective properties. It is important to take into account that pulses are not usually consumed raw, but they must be processed before consumption in order to improve their nutritional quality and their palatability, therefore, the effect of different technological and heat treatments (germination, cooking, boiling, extrusion) on the antioxidant compounds present in pulses has been also reviewed. In this regard, it has been observed that as a consequence of processing, the content of phytochemicals with antioxidant properties is usually decreased, but processed pulses maintain relevant amounts of these compounds, preserving their beneficial health effect.
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Affiliation(s)
- María Ciudad-Mulero
- Department of Nutrition and Food Science, Faculty of Pharmacy, Complutense University of Madrid, Pza Ramon y Cajal, s/n. E- 28040 Madrid, Spain
| | - Mª Cruz Matallana-González
- Department of Nutrition and Food Science, Faculty of Pharmacy, Complutense University of Madrid, Pza Ramon y Cajal, s/n. E- 28040 Madrid, Spain
| | - Montaña Cámara
- Department of Nutrition and Food Science, Faculty of Pharmacy, Complutense University of Madrid, Pza Ramon y Cajal, s/n. E- 28040 Madrid, Spain
| | - Virginia Fernández-Ruiz
- Department of Nutrition and Food Science, Faculty of Pharmacy, Complutense University of Madrid, Pza Ramon y Cajal, s/n. E- 28040 Madrid, Spain
| | - Patricia Morales
- Department of Nutrition and Food Science, Faculty of Pharmacy, Complutense University of Madrid, Pza Ramon y Cajal, s/n. E- 28040 Madrid, Spain
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Yuan C, Chen H, Wang Y, Schneider JA, Willett WC, Morris MC. Dietary carotenoids related to risk of incident Alzheimer dementia (AD) and brain AD neuropathology: a community-based cohort of older adults. Am J Clin Nutr 2020; 113:200-208. [PMID: 33184623 PMCID: PMC7779228 DOI: 10.1093/ajcn/nqaa303] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/30/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Studies have reported a protective relation to cognitive decline with long-term intake of total and individual dietary carotenoids. However, the underlying mechanisms have not yet been clearly established in humans. OBJECTIVES To evaluate the prospective association between intakes of total and individual carotenoids and risk of incident Alzheimer dementia (AD) and explore the underlying neuropathological basis. METHODS Among 927 participants from the Rush Memory and Aging Project who were free from AD at baseline and were followed up for a mean of 7 y, we estimated HRs for AD using Cox proportional hazards models by intakes of energy-adjusted carotenoids. Brain AD neuropathology was assessed in postmortem brain autopsies among 508 deceased participants. We used linear regression to assess the association of carotenoid intake with AD-related neuropathology. RESULTS Higher intake of total carotenoids was associated with substantially lower hazard of AD after controlling for age, sex, education, ApoE-ε4, participation in cognitively stimulating activities, and physical activity level. Comparing the top and bottom quintiles (median intake: 24.8 compared with 6.7 mg/d) of total carotenoids, the multivariate HR (95% CI) was 0.52 (0.33, 0.81), P-trend < 0.01. A similar association was observed for lutein-zeaxanthin, a weaker linear inverse association was observed for β-carotene, and a marginally significant linear inverse association was found for β-cryptoxanthin. Among the deceased participants, consumers of higher total carotenoids (top compared with bottom tertile, 18.2 compared with 8.2 mg/d) had less global AD pathology (b: -0.10; SE = 0.04; P-trend = 0.01). For individual carotenoids, lutein-zeaxanthin and lycopene were inversely associated with brain global pathology, whereas lutein-zeaxanthin showed additional inverse associations with AD diagnostic score, neuritic plaque severity, and neurofibrillary tangle density and severity. CONCLUSIONS Our findings support a beneficial role of total carotenoid consumption, in particular lutein/zeaxanthin, on AD incidence that may be related to the inhibition of brain β-amyloid deposition and fibril formation.
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Affiliation(s)
| | - Hui Chen
- Department of Big Data and Health Science, Zhejiang University School of Public Health, Hangzhou, Zhejiang, China
| | - Yamin Wang
- Rush Institute for Healthy Aging, Rush University Medical Center, Chicago, IL, USA
| | - Julie A Schneider
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Walter C Willett
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA,Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Martha Clare Morris
- Rush Institute for Healthy Aging, Rush University Medical Center, Chicago, IL, USA
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Davey PG, Henderson T, Lem DW, Weis R, Amonoo-Monney S, Evans DW. Visual Function and Macular Carotenoid Changes in Eyes with Retinal Drusen-An Open Label Randomized Controlled Trial to Compare a Micronized Lipid-Based Carotenoid Liquid Supplementation and AREDS-2 Formula. Nutrients 2020; 12:nu12113271. [PMID: 33114566 PMCID: PMC7693149 DOI: 10.3390/nu12113271] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/22/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023] Open
Abstract
Purpose: To compare the changes in visual and ocular parameters in individuals with retinal drusen who were treated with two commercially available nutritional supplements. Methods: An open-label, single-center, randomized, parallel-treatment with an observational control group design was utilized. The treatment groups included individuals with fine retinal drusen sub-clinical age-related macular degeneration (AMD), while the control group consisted of ocular normal individuals. The treatment groups were randomly assigned to the micronized lipid-based carotenoid supplement, Lumega-Z (LM), or the PreserVision Age-Related Eye Disease Study 2 (AREDS-2) soft gel (PV). Visual performance was evaluated using the techniques of visual acuity, dark adaptation recovery and contrast sensitivity, at baseline, three months, and six months. Additionally, the macular pigment optical density (MPOD) was measured. The control group was not assigned any carotenoid supplement. The right eye and left eye results were analyzed separately. Results: Seventy-nine participants were recruited for this study, of which 68 qualified and 56 participants had useable reliable data. Of the individuals who completed this study, 25 participants belonged to the LM group, 16 belonged to the PV group, and 15 to the control group. The LM group demonstrated statistically significant improvements in contrast sensitivity function (CSF) in both eyes at six months (p < 0.001). The LM group displayed a positive linear trend with treatment time in CSF (p < 0.001), with benefits visible after just three months of supplementation. Although there was a trend showing improvement in CSF in the PV group, the change was not significant after a Bonferroni-corrected p-value of p < 0.00625. Visual acuity, dark adaptation recovery and MPOD did not significantly improve in either treatment groups. Conclusion: The LM group demonstrated greater and faster benefits in visual performance as measured by CSF when compared to the PV group. This trial has been registered at clinicaltrials.gov (NCT03946085).
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Affiliation(s)
- Pinakin Gunvant Davey
- College of Optometry, Western University of Health Sciences, Pomona, CA 91766, USA; (D.W.L.); (S.A.-M.)
- Correspondence: ; Tel.: +1-909-469-8473
| | | | - Drake W. Lem
- College of Optometry, Western University of Health Sciences, Pomona, CA 91766, USA; (D.W.L.); (S.A.-M.)
| | - Rebecca Weis
- Eye Clinic of Austin, Austin, TX 78731, USA; (T.H.); (R.W.)
| | - Stephanie Amonoo-Monney
- College of Optometry, Western University of Health Sciences, Pomona, CA 91766, USA; (D.W.L.); (S.A.-M.)
| | - David W. Evans
- VectorVision/Guardion Health Sciences, San Diego, CA 92128, USA;
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Enhanced physical and cognitive performance in active duty Airmen: evidence from a randomized multimodal physical fitness and nutritional intervention. Sci Rep 2020; 10:17826. [PMID: 33077817 PMCID: PMC7572526 DOI: 10.1038/s41598-020-74140-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 09/15/2020] [Indexed: 11/24/2022] Open
Abstract
Achieving military mission objectives requires high levels of performance from Airmen who operate under extreme physical and cognitive demands. Thus, there is a critical need to establish scientific interventions to enhance physical fitness and cognitive performance—promoting the resilience of Airmen and aiding in mission success. We therefore conducted a comprehensive, 12-week randomized controlled trial in active-duty Air Force Airmen (n = 148) to compare the efficacy of a multimodal intervention comprised of high-intensity interval aerobic fitness and strength training paired with a novel nutritional supplement [comprised of β-hydroxy β-methylbutyrate (HMB), lutein, phospholipids, DHA and selected micronutrients including B12 and folic acid] to high-intensity interval aerobic fitness and strength training paired with a standard of care placebo beverage. The exercise intervention alone improved several dimensions of physical fitness [strength and endurance (+ 8.3%), power (+ 0.85%), mobility and stability (+ 22%), heart rate (− 1.1%) and lean muscle mass (+ 1.4%)] and cognitive function [(episodic memory (+ 9.5%), processing efficiency (+ 7.5%), executive function reaction time (− 4.8%) and fluid intelligence accuracy (+ 19.5%)]. Relative to exercise training alone, the multimodal fitness and nutritional intervention further improved working memory (+ 9.0%), fluid intelligence reaction time (− 7.7%), processing efficiency (+ 1.8%), heart rate (− 2.4%) and lean muscle mass (+ 1.5%). These findings establish the efficacy of a multimodal intervention that incorporates aerobic fitness and strength training with a novel nutritional supplement to enhance military performance objectives and to provide optimal exercise training and nutritional support for the modern warfighter.
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Demmig-Adams B, López-Pozo M, Stewart JJ, Adams WW. Zeaxanthin and Lutein: Photoprotectors, Anti-Inflammatories, and Brain Food. Molecules 2020; 25:molecules25163607. [PMID: 32784397 PMCID: PMC7464891 DOI: 10.3390/molecules25163607] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 12/11/2022] Open
Abstract
This review compares and contrasts the role of carotenoids across the taxa of life—with a focus on the xanthophyll zeaxanthin (and its structural isomer lutein) in plants and humans. Xanthophylls’ multiple protective roles are summarized, with attention to the similarities and differences in the roles of zeaxanthin and lutein in plants versus animals, as well as the role of meso-zeaxanthin in humans. Detail is provided on the unique control of zeaxanthin function in photosynthesis, that results in its limited availability in leafy vegetables and the human diet. The question of an optimal dietary antioxidant supply is evaluated in the context of the dual roles of both oxidants and antioxidants, in all vital functions of living organisms, and the profound impact of individual and environmental context.
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Dietary Intake of Carotenoid-Rich Vegetables Reduces Visceral Adiposity in Obese Japanese men-A Randomized, Double-Blind Trial. Nutrients 2020; 12:nu12082342. [PMID: 32764462 PMCID: PMC7468729 DOI: 10.3390/nu12082342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/25/2020] [Accepted: 08/01/2020] [Indexed: 12/24/2022] Open
Abstract
Metabolic syndrome, whose main diagnostic component is obesity, is a risk factor for lifestyle-related diseases, type 2 diabetes, and cardiovascular disease. Diet is known to affect the prevalence of metabolic syndrome. However, the effect of diet on metabolic syndrome in Japanese subjects has not been thoroughly explored. In the present study, we investigated the effect of carotenoid-rich vegetables, particularly lycopene- and lutein-rich vegetables, on the metabolic syndrome in obese Japanese men. We conducted an 8-week long randomized, double-blinded, controlled clinical trial in which, 28 middle-aged (40 ≤ age < 65) Japanese men with high body mass index (BMI ≥ 25) were randomized into four dietary groups: high lycopene + high lutein (HLyHLu), high lycopene + low lutein (HLyLLu), low lycopene + high lutein (LLyHLu), and low lycopene + low lutein (LLyLLu). Our results showed that daily beverage-intake increased the plasma levels of carotenoids without adverse effects, and the visceral fat level was significantly decreased in all the groups. The waist circumference was significantly decreased only in the HLyLLu group, whereas the CoQ10 oxidation rate was decreased in all the groups. The gene expression profiles of whole blood samples before and after ingestion differed only in the LLyLLu group, indicating the effect of carotenoids on gene expression profile. In conclusion, our results suggest that dietary uptake of carotenoid-rich vegetables increases their concentration in blood and reduces the intra-abdominal visceral fat.
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Anderson JR, Maki KC, Palacios OM, Edirisinghe I, Burton-Freeman B, Spitznagel MB. Varying roles of glucoregulatory function measures in postprandial cognition following milk consumption. Eur J Nutr 2020; 60:1499-1510. [PMID: 32737613 DOI: 10.1007/s00394-020-02343-9] [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] [Received: 10/08/2019] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Past work suggests milk consumption may facilitate cognition in children and college students with higher fasting glucose compared to other beverages (e.g., fruit juice). However, no studies have evaluated this phenomenon in adults, or considered other measures of glucoregulatory function. This open-label study assessed the role of glucoregulatory function in postprandial cognition after milk intake in adults. We hypothesized participants with lower fasting or post-consumption plasma glucose following a glucose excursion challenge (glucose response) would demonstrate better cognition following beverages of higher (juice) versus lower (milk) or no (water) glycemic content. METHODS Forty-four nondiabetic, overnight-fasted adults attended three laboratory visits, ingesting 237 mL of 2% fat milk, apple juice, or water at each visit in a randomized, counterbalanced, crossover design. Participants completed cognitive testing (CNS Vital Signs) at baseline and 30, 90, and 150 min post-ingestion; primary outcomes were CNS Vital Signs composite scores. Fasting and post-consumption plasma glucose levels were assessed, with glucose response indexed as the change in plasma glucose from baseline to 30 min after juice (ΔGlucose). RESULTS Mixed modeling revealed participants with higher fasting glucose demonstrated better complex attention after water versus juice at 30 min, but better performance after juice versus water at 150 min (p = 0.02). Participants with a larger ΔGlucose demonstrated better processing speed (p = 0.01) 30 min after milk versus water; this effect also reversed at 150 min. CONCLUSION Different methods of measuring glucoregulatory function reveal its differing roles in postprandial cognition. Time since ingestion may also determine which beverages best optimize cognition.
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Affiliation(s)
- Jason R Anderson
- Department of Psychological Sciences, Kent State University, 600 Hilltop Drive, Kent, OH, 44240, USA
| | - Kevin C Maki
- Midwest Biomedical Research, Addison, IL, 60640, USA
| | | | - Indika Edirisinghe
- Department of Food Science and Nutrition, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Britt Burton-Freeman
- Department of Food Science and Nutrition, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Mary Beth Spitznagel
- Department of Psychological Sciences, Kent State University, 600 Hilltop Drive, Kent, OH, 44240, USA.
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Lai JS, Cai S, Lee BL, Godfrey KM, Gluckman PD, Shek LP, Yap F, Tan KH, Chong YS, Ong CN, Meaney MJ, Rifkin-Graboi A, Broekman BFP, Chong MFF. Higher maternal plasma β-cryptoxanthin concentration is associated with better cognitive and motor development in offspring at 2 years of age. Eur J Nutr 2020; 60:703-714. [PMID: 32435993 DOI: 10.1007/s00394-020-02277-2] [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: 11/27/2019] [Accepted: 05/11/2020] [Indexed: 01/09/2023]
Abstract
PURPOSE Current literature on the roles of α-, β-carotene and β-cryptoxanthin in neurocognitive function has largely focused on preventing cognitive decline in older people, and less on neuro-development in children. We examined the relations of maternal plasma carotenoids concentrations with offspring cognitive development up to age 4.5 years in the Growing Up in Singapore Towards healthy Outcomes mother-offspring cohort study. METHODS Maternal plasma α-, β-carotene and β-cryptoxanthin concentrations at delivery were determined by ultra-performance liquid chromatography. Children's cognition was assessed at ages 2 (Bayley Scales of Infant and Toddler Development) and 4.5 (Kaufman Brief Intelligence Test) years. Associations were examined in 419 mother-offspring pairs using linear regressions adjusting for key confounders. RESULTS Median and interquartile range of maternal plasma concentrations (mg/L) were: α-carotene 0.052 (0.032, 0.081), β-carotene 0.189 (0.134, 0.286), and β-cryptoxanthin 0.199 (0.123, 0.304). In 2 years old children, higher maternal carotenoids [per standard deviation (SD) log-concentration] were positively associated with neurocognitive functions: β-cryptoxanthin with higher scores in cognitive [β = 0.18, (0.08, 0.28) SD], receptive language [β = 0.17 (0.07, 0.27) SD], fine motor [β = 0.16 (0.05, 0.26) SD], and gross motor [β = 0.16 (0.06, 0.27) SD] scales; β-carotene with higher cognitive score [β = 0.17 (0.05, 0.29) SD]. No significant associations were observed with neurocognitive functions at age 4.5 years. CONCLUSION Our study provides novel data suggesting a potential role of prenatal carotenoids, particularly β-cryptoxanthin, on early offspring cognitive and motor development. Whether the prenatal influences sustain beyond early childhood requires further investigation in longer term studies.
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Affiliation(s)
- Jun S Lai
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore
| | - Shirong Cai
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Bee Lan Lee
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, 12 Science Drive 2, #09-01Q, Singapore, 117549, Singapore
| | - Keith M Godfrey
- MRC Lifecourse Epidemiology Unit, NIHR Southampton Biomedical Research Centre, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Peter D Gluckman
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Liggins Institute, University of Auckland, Grafton, Auckland, New Zealand
| | - Lynette P Shek
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Fabian Yap
- Duke-NUS Medical School, Singapore, Singapore.,Department of Paediatric Endocrinology, KK Women's and Children's Hospital, Singapore, Singapore
| | - Kok Hian Tan
- Department of Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore, Singapore
| | - Yap Seng Chong
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Choon Nam Ong
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, 12 Science Drive 2, #09-01Q, Singapore, 117549, Singapore
| | - Michael J Meaney
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Department of Psychiatry and Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
| | - Anne Rifkin-Graboi
- Department Office of Education Research, National Institute of Education, Singapore, Singapore
| | - Birit F P Broekman
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore.,Department of Psychiatry, OLVG and VU Medical Centre, Amsterdam, The Netherlands
| | - Mary F F Chong
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research, Singapore, Singapore. .,Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, 12 Science Drive 2, #09-01Q, Singapore, 117549, Singapore.
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Nagai N, Asato T, Minami S, Suzuki M, Shinoda H, Kurihara T, Sonobe H, Watanabe K, Uchida A, Ban N, Tsubota K, Ozawa Y. Correlation between Macular Pigment Optical Density and Neural Thickness and Volume of the Retina. Nutrients 2020; 12:nu12040888. [PMID: 32218119 PMCID: PMC7230595 DOI: 10.3390/nu12040888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/20/2020] [Accepted: 03/22/2020] [Indexed: 01/28/2023] Open
Abstract
Macular pigment (MP), which is composed of lutein/zeaxanthin/mezo-zeaxanthin, is concentrated in the central part of the retina, the macula. It protects the macula by absorbing short-wavelength light and suppressing oxidative stress. To evaluate whether MP levels are related to retinal neural protection and resulting health, we analyzed the association between the MP optical density (MPOD), and the macular thickness and volumes. Forty-three eyes of 43 healthy adult volunteers (21 men and 22 women; age: 22–48 (average 31.4 ± 1.1) years) were analyzed. Highly myopic eyes (<-6 diopters) were excluded. MPOD was measured using MPS2®, and the neural retinal thickness and volume were measured using optical coherence tomography. The mean MPOD was 0.589 ± 0.024, and it positively correlated with the central retinal thickness (P = 0.017, R = 0.360) and retinal volume of the fovea (1-mm diameter around the fovea; P = 0.029, R = 0.332), parafovea (1–3-mm diameter; P = 0.002, R = 0.458), and macula (6-mm diameter; P = 0.003, R = 0.447). In the macular area (diameter: 6 mm), MPOD was correlated with the retinal neural volume of the ganglion cell layer (P = 0.037, R = 0.320), inner plexiform layer (P = 0.029, R = 0.333), and outer nuclear layer (P = 0.020, R = 0.353). Thus, MPOD may help in estimating neural health. Further studies should determine the impact of MP levels on neuroprotection.
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Affiliation(s)
- Norihiro Nagai
- Laboratory of Retinal Cell Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (N.N.); (M.S.)
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Teru Asato
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Sakiko Minami
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Misa Suzuki
- Laboratory of Retinal Cell Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (N.N.); (M.S.)
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Hajime Shinoda
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Toshihide Kurihara
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Hideki Sonobe
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Kazuhiro Watanabe
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Atsuro Uchida
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Norimitsu Ban
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
| | - Yoko Ozawa
- Laboratory of Retinal Cell Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (N.N.); (M.S.)
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (T.A.); (S.M.); (H.S.); (T.K.); (H.S.); (K.W.); (A.U.); (N.B.); (K.T.)
- Department of Ophthalmology, St. Luke’s International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan
- Correspondence: or ; Tel.: +81-3-3353-1211
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de Mejia EG, Zhang Q, Penta K, Eroglu A, Lila MA. The Colors of Health: Chemistry, Bioactivity, and Market Demand for Colorful Foods and Natural Food Sources of Colorants. Annu Rev Food Sci Technol 2020; 11:145-182. [PMID: 32126181 DOI: 10.1146/annurev-food-032519-051729] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
There is an increasing consumer demand for natural colors in foods. However, there is a limited number of available natural food sources for use by the food industry because of technical and regulatory limitations. Natural colors are less stable and have less vibrant hues compared to their synthetic color counterparts. Natural pigments also have known health benefits that are seldom leveraged by the food industry. Betalains, carotenoids, phycocyanins, and anthocyanins are major food colorants used in the food industry that have documented biological effects, particularly in the prevention and management of chronic diseases such as diabetes, obesity, and cardiovascular disease. The color industry needs new sources of stable, functional, and safe natural food colorants. New opportunities include sourcing new colors from microbial sources and via the use of genetic biotechnology. In all cases, there is an imperative need for toxicological evaluation to pave the way for their regulatory approval.
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Affiliation(s)
- Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Illinois 61801, USA;
| | - Qiaozhi Zhang
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Kayla Penta
- Department of Molecular and Structural Biochemistry and Plants for Human Health Institute, North Carolina Research Campus, North Carolina State University, Kannapolis, North Carolina 28081, USA
| | - Abdulkerim Eroglu
- Department of Molecular and Structural Biochemistry and Plants for Human Health Institute, North Carolina Research Campus, North Carolina State University, Kannapolis, North Carolina 28081, USA
| | - Mary Ann Lila
- Department of Food, Bioprocessing & Nutrition Sciences and Plants for Human Health Institute, North Carolina Research Campus, North Carolina State University, Kannapolis, North Carolina 28081, USA
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Effects of Lutein and Astaxanthin Intake on the Improvement of Cognitive Functions among Healthy Adults: A Systematic Review of Randomized Controlled Trials. Nutrients 2020; 12:nu12030617. [PMID: 32120794 PMCID: PMC7146131 DOI: 10.3390/nu12030617] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 12/31/2022] Open
Abstract
Background: Fruits and vegetables are generally rich in antioxidants such as carotenoids. Consumption of carotenoids is expected to have benefits on cognitive functions in humans. However, previous randomized controlled trials (RCT) using carotenoids have reported inconsistent results. Therefore, this systematic review (SR) aimed to summarize the effect of carotenoid intake on cognitive functions in humans. Method: PubMed, Cochrane Library, Web of Science, and PsychoINFO were searched for research papers on carotenoid intake with the criteria that 1) oral carotenoid intake was evaluated using RCTs, 2) participants were healthy young, middle-aged, or older, and 3) cognitive functions were measured using RCTs. Results: Five studies using lutein and two studies using astaxanthin met the inclusion criteria. Consumption of lutein and its isomer showed consistent results in selective improvement of visual episodic memory in young and middle-aged adults while inhibition was observed in middle-aged and older adults. One of the two included astaxanthin studies reported a significant improvement of verbal episodic memory performance in middle-aged adults. Conclusion: This SR showed that the 10 mg lutein per day for twelve months can lead to improvement of cognitive functions. Due to the small number of studies, it is difficult to conclude whether astaxanthin would have a positive effect on cognitive functions.
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Bhat I, Yathisha UG, Karunasagar I, Mamatha BS. Nutraceutical approach to enhance lutein bioavailability via nanodelivery systems. Nutr Rev 2020; 78:709-724. [DOI: 10.1093/nutrit/nuz096] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Abstract
Lutein, a potent dietary carotenoid, has considerable biological activity and confers protection against age-related macular degeneration. Its bioavailability following consumption, however, depends on its rate of degradation. Nanodelivery systems with improved efficacy and stability are currently being developed to increase the bioavailability of lutein. This review examines nutraceutical approaches used in the development of such nanodelivery systems. It describes the methods of lutein preparation, the characteristics of various delivery systems, and the lutein delivery profile. In order to enhance lutein loading, provide electrostatic stabilization, and achieve the controlled release of lutein, adjuvants such as dextran moieties, whey proteins, medium-chain triglycerides, and chitosan polymers can be used to effectively reduce the particle size (< 70 nm) and improve encapsulation efficiency (to 99.5%). The improved bioavailability of lutein via nanocrystals incorporated into rapidly dissolving films for oral consumption is a new area of exploratory research. This review aims to provide clarity about current research aimed at enhancing the bioavailability of lutein through the development of nanodelivery systems.
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Affiliation(s)
- Ishani Bhat
- Department of Food Safety and Nutrition, Nitte University Center for Science Education and Research, Nitte (Deemed to be University), Mangaluru, Karnataka, India
| | - Undiganalu Gangadharappa Yathisha
- Department of Food Safety and Nutrition, Nitte University Center for Science Education and Research, Nitte (Deemed to be University), Paneer Campus, Deralakatte, Mangaluru, Karnataka, India
| | - Iddya Karunasagar
- Nitte (Deemed to be University), Deralakatte, Mangaluru, Karnataka, India
| | - Bangera Sheshappa Mamatha
- Department of Food Safety and Nutrition, Nitte University Center for Science Education and Research, Nitte (Deemed to be University), Paneer Campus, Deralakatte, Mangaluru, Karnataka, India
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Sea Buckthorn Oil as a Valuable Source of Bioaccessible Xanthophylls. Nutrients 2019; 12:nu12010076. [PMID: 31892138 PMCID: PMC7020026 DOI: 10.3390/nu12010076] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/21/2019] [Accepted: 12/23/2019] [Indexed: 01/28/2023] Open
Abstract
Sea buckthorn oil, derived from the fruits of the shrub, also termed seaberry or sandthorn, is without doubt a strikingly rich source of carotenoids, in particular zeaxanthin and β-carotene. In the present study, sea buckthorn oil and an oil-in-water emulsion were subjected to a simulated gastro-intestinal in vitro digestion, with the main focus on xanthophyll bioaccessibility. Zeaxanthin mono- and di-esters were the predominant carotenoids in sea buckthorn oil, with zeaxanthin dipalmitate as the major compound (38.0%). A typical fatty acid profile was found, with palmitic (49.4%), palmitoleic (28.0%), and oleic (11.7%) acids as the dominant fatty acids. Taking into account the high amount of carotenoid esters present in sea buckthorn oil, the use of cholesterol esterase was included in the in vitro digestion protocol. Total carotenoid bioaccessibility was higher for the oil-in-water emulsion (22.5%) compared to sea buckthorn oil (18.0%) and even higher upon the addition of cholesterol esterase (28.0% and 21.2%, respectively). In the case of sea buckthorn oil, of all the free carotenoids, zeaxanthin had the highest bioaccessibility (61.5%), followed by lutein (48.9%), making sea buckthorn oil a potential attractive source of bioaccessible xanthophylls.
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Mayburd AL, Koivogui M, Baranova A. Pharmacological signatures of the reduced incidence and the progression of cognitive decline in ageing populations suggest the protective role of beneficial polypharmacy. PLoS One 2019; 14:e0224315. [PMID: 31693707 PMCID: PMC6834256 DOI: 10.1371/journal.pone.0224315] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022] Open
Abstract
Preventive treatments for dementia are warranted. Here we show that utilization of certain combinations of prescription medications and supplements correlates with reduced rates of cognitive decline. More than 1,900 FDA-approved agents and supplements were collapsed into 53 mechanism-based groups and traced in electronic medical records (EMRs) for >50,000 patients. These mechanistic groups were aligned with the data presented in more than 300 clinical trials, then regression model was built to fit the signals from EMRs to clinical trial performance. While EMR signals of each single agents correlated with clinical performance relatively weakly, the signals produced by combinations of active compounds were highly correlated with the clinical trial performance (R = 0.93, p = 3.8 x10^-8). Higher ranking pharmacological modalities were traced in patient profiles as their combinations, producing protective complexity estimates reflecting degrees of exposure to beneficial polypharmacy. For each age strata, the higher was the protective complexity score, the lower was the prevalence of dementia, with maximized life-long effects for the highest regression score /diversity compositions. The connection was less strong in individuals already diagnosed with cognitive impairment. Confounder analysis confirmed an independent effect of protective complexity in multivariate context. A sub-cohort with lifelong odds of dementia decreased > 5-folds was identified; this sub-cohort should be studied in further details, including controlled clinical trials. In short, our study systematically explored combinatorial preventive treatment regimens for age-associated multi-morbidity, with an emphasis on neurodegeneration, and provided extensive evidence for their feasibility.
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Affiliation(s)
- Anatoly L. Mayburd
- Neurocombinatorix, Alexandria, Virginia, United States of America
- George Mason University, School of Systems Biology, Colgan Hall, MSN 3E1 George Mason University, Manassas, Virginia, United States of America
| | | | - Ancha Baranova
- George Mason University, School of Systems Biology, Colgan Hall, MSN 3E1 George Mason University, Manassas, Virginia, United States of America
- Research Centre for Medical Genetics, Moscow, Russia
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Stringham NT, Holmes PV, Stringham JM. Effects of macular xanthophyll supplementation on brain-derived neurotrophic factor, pro-inflammatory cytokines, and cognitive performance. Physiol Behav 2019; 211:112650. [PMID: 31425700 DOI: 10.1016/j.physbeh.2019.112650] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE Oxidative and inflammatory processes play a major role in stress-induced neural atrophy. There is a wide body of literature linking oxidative and inflammatory stress with reductions in neurotrophic factors, stress resilience, and cognitive function. Based on their antioxidant and anti-inflammatory capacity, we investigated the effect of the dietary carotenoids lutein and zeaxanthin, along with the zeaxanthin isomer meso-zeaxanthin (collectively the "macular xanthophylls" [MXans]) on systemic brain-derived neurotrophic factor (BDNF) and anti-oxidant capacity (AOC), and the pro-inflammatory cytokines TNF-α, IL-6, and IL-1β. To investigate higher-order effects, we assessed cognitive performance. METHODS 59 young (18-25 yrs.), healthy subjects participated in a 6-month, double-blind, placebo-controlled trial to evaluate the effects of MXan supplementation on the aforementioned serum parameters and cognitive performance. Subjects were randomly assigned to one of three groups: placebo, 13 mg, or 27 mg/day total MXans; all measures were taken at baseline and 6 months. Blood was obtained via fasting blood draw, and MXan concentration in the retina (termed macular pigment optical density [MPOD]) was measured via customized heterochromatic flicker photometry. Serum BDNF and cytokines were assessed via ELISA. Serum antioxidant capacity (AOC) and serum MXan concentrations were quantified via colorimetric microplate assay, and high-performance liquid chromatography, respectively. Cognitive performance was measured via a computer-based assessment tool (CNS Vital Signs). RESULTS BDNF, MPOD, serum MXans, and AOC all increased significantly versus placebo in both treatment groups over the 6-month study period (p < .05 for all). IL-1β decreased significantly versus placebo in both treatment groups (p = .0036 and p = .006, respectively). For cognitive measures, scores for composite memory, verbal memory, sustained attention, psychomotor speed, and processing speed all improved significantly in treatment groups (p < .05 for all) and remained unchanged in the placebo group. Several measures were found to be significantly associated in terms of relational changes over the course of the study. Notably, change in BDNF was related to change in IL-1β (r = -0.47; p < .001) and MPOD (r = 0.44; p = .0086). Additionally, changes in serum MXans were strongly related to AOC (r = 0.79 & 0.61 for lutein and zeaxanthin isomers respectively; p < .001). For cognitive scores, change in BDNF was correlated to change in composite memory (r = 0.32; p = .014) and verbal memory (r = 0.35; p = .007), whereas change in MPOD was correlated with change in both psychomotor speed (r = 0.38; p = .003), and processing speed (r = 0.35; p = .007). Change in serum lutein was found to be significantly correlated to change in verbal memory (r = 0.41; p < .001), composite memory (r = 0.31; p = .009), and sustained attention (r = 0.28; p = .036). Change in serum zeaxanthin isomers was significantly correlated with change in verbal memory (r = 0.33; p = .017). Lastly, change in AOC was significantly associated with verbal memory (r = 0.34; p = .021), composite memory (r = 0.29; p = .03), and sustained attention (r = 0.35; p = .016). No significant relational changes in any cognitive parameter were found for the placebo group. CONCLUSIONS Six months of daily supplementation with at least 13 mg of MXans significantly reduces serum IL-1β, significantly increases serum MXans, BDNF, MPOD, and AOC, and improves several parameters of cognitive performance. Findings suggest that increased systemic antioxidant/anti-inflammatory capacity (and not necessarily deposition of the carotenoids in neural tissues), may explain many of the effects determined in this study. The significant relationship between change in BDNF and IL-1β over the course of the study suggests that regular consumption of MXans interrupts the inflammatory cascade that can lead to reduction of BDNF. Changes in MPOD and BDNF appear to account for enhancement in cognitive parameters that involve speed of processing and complex processing, respectively. ISRCTN Clinical Trial Registration: ISRCTN16156382.
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Affiliation(s)
- Nicole T Stringham
- Interdisciplinary Neuroscience Program-Biomedical and Health Sciences Institute, University of Georgia, Athens, GA 30602, United States of America; Department of Psychology, University of Georgia, Athens, GA 30602, United States of America.
| | - Philip V Holmes
- Interdisciplinary Neuroscience Program-Biomedical and Health Sciences Institute, University of Georgia, Athens, GA 30602, United States of America; Department of Psychology, University of Georgia, Athens, GA 30602, United States of America.
| | - James M Stringham
- Visual Performance Laboratory, Duke Eye Center, Durham, NC 27705, United States of America.
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Dietary Neuroketotherapeutics for Alzheimer's Disease: An Evidence Update and the Potential Role for Diet Quality. Nutrients 2019; 11:nu11081910. [PMID: 31443216 PMCID: PMC6722814 DOI: 10.3390/nu11081910] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/29/2019] [Accepted: 08/13/2019] [Indexed: 12/20/2022] Open
Abstract
Alzheimer’s disease (AD) is a devastating neurodegenerative disease with growing prevalence as the global population ages. Currently available treatments for AD have minimal efficacy and there are no proven treatments for its prodrome, mild cognitive impairment (MCI). AD etiology is not well understood and various hypotheses of disease pathogenesis are currently under investigation. A consistent hallmark in patients with AD is reduced brain glucose utilization; however, evidence suggests that brain ketone metabolism remains unimpaired, thus, there is a great deal of increased interest in the potential value of ketone-inducing therapies for the treatment of AD (neuroketotherapeutics; NKT). The goal of this review was to discuss dietary NKT approaches and mechanisms by which they exert a possible therapeutic benefit, update the evidence available on NKTs in AD and consider a potential role of diet quality in the clinical use of dietary NKTs. Whether NKTs affect AD symptoms through the restoration of bioenergetics, the direct and indirect modulation of antioxidant and inflammation pathways, or both, preliminary positive evidence suggests that further study of dietary NKTs as a disease-modifying treatment in AD is warranted.
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Wallace TC, Bailey RL, Blumberg JB, Burton-Freeman B, Chen CYO, Crowe-White KM, Drewnowski A, Hooshmand S, Johnson E, Lewis R, Murray R, Shapses SA, Wang DD. Fruits, vegetables, and health: A comprehensive narrative, umbrella review of the science and recommendations for enhanced public policy to improve intake. Crit Rev Food Sci Nutr 2019; 60:2174-2211. [DOI: 10.1080/10408398.2019.1632258] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Taylor C. Wallace
- Department of Nutrition and Food Studies, George Mason University, Fairfax, Virginia, USA
- Think Healthy Group, Inc., Washington, DC, USA
| | - Regan L. Bailey
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA
| | - Jeffrey B. Blumberg
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachusetts, USA
| | - Britt Burton-Freeman
- Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Bedford Park, Illinois, USA
| | - C-y. Oliver Chen
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachusetts, USA
- Biofortis Research, Merieux NutriSciences, Addison, Illinois, USA
| | | | - Adam Drewnowski
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Shirin Hooshmand
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, California, USA
| | - Elizabeth Johnson
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachusetts, USA
| | - Richard Lewis
- Bone and Body Composition Laboratory, College of Family and Consumer Sciences, University of Georgia, Athens, Georgia, USA
| | - Robert Murray
- College of Education and Human Ecology, The Ohio State University, Columbus, Ohio, USA
| | - Sue A. Shapses
- Department of Nutritional Sciences, Rutgers University, New Brunswick, New Jersey, USA
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Stringham JM, Johnson EJ, Hammond BR. Lutein across the Lifespan: From Childhood Cognitive Performance to the Aging Eye and Brain. Curr Dev Nutr 2019; 3:nzz066. [PMID: 31321376 PMCID: PMC6629295 DOI: 10.1093/cdn/nzz066] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/05/2019] [Accepted: 05/30/2019] [Indexed: 12/21/2022] Open
Abstract
Lutein is a non-provitamin A dietary carotenoid found in dark green leafy vegetables, corn, eggs, and avocados. Among the carotenoids, lutein and its isomer, zeaxanthin, are the only 2 that cross the blood-retina barrier to form macular pigment in the retina. Lutein also preferentially accumulates in the human brain across multiple life stages. A variety of scientific evidence supports a role for lutein in visual as well as cognitive function across the lifespan. The purpose of this review is to summarize the latest science on lutein's role in the eye and the brain across different ages.
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Affiliation(s)
| | | | - B Randy Hammond
- Department of Psychology, University of Georgia-Athens, Athens, GA, USA
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Ceravolo SA, Hammond BR, Oliver W, Clementz B, Miller LS, Renzi-Hammond LM. Dietary Carotenoids Lutein and Zeaxanthin Change Brain Activation in Older Adult Participants: A Randomized, Double-Masked, Placebo-Controlled Trial. Mol Nutr Food Res 2019; 63:e1801051. [PMID: 30950580 DOI: 10.1002/mnfr.201801051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 03/06/2019] [Indexed: 12/16/2022]
Abstract
SCOPE Steady-state visual evoked potentials (SSVEP) can be used to test the topological response of cortical neurons. Studies have shown that a lutein (L) preferentially accumulates within cortical tissue. L, zeaxanthin (Z), and their isomers can be measured directly in retina (macular pigment optical density, MPOD), and retinal L+Z correlate highly with L+Z levels in cortical visual processing areas. The purpose of this study was to determine the relation between MPOD and SSVEP signal power, cross-sectionally and after supplementation with L+Z. METHODS AND RESULTS SSVEP to three different driving frequencies of stimulation (5, 10, and 16.6 Hz) were obtained for community-dwelling older adults, at baseline and after 12 months of supplementation with either 12 mg L+Z or placebo. Power was quantified at the driving frequencies. Non-specific activation was quantified within the 10-15 Hz band. MPOD was measured psychophysically. Subjects with low MPOD had reduced power at 16.6 Hz and reduced non-specific activation, compared with subjects with high MPOD. Supplementation significantly improved signal power at 5 and 10 Hz. CONCLUSION Past research suggests that L+Z can improve visual memory, visual processing speeds, etc. One possible mechanism for that improvement may be improving signal-to-noise ratio throughout the vision system.
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Affiliation(s)
- S Anna Ceravolo
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, University of Georgia, Athens, GA, 30602, USA.,Athens Community Council on Aging, Athens, GA, 30601, USA
| | - Billy R Hammond
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, University of Georgia, Athens, GA, 30602, USA.,Human Biofactors Laboratory, Institute of Gerontology, Department of Health Promotion and Behavior, University of Georgia, Athens, GA, USA
| | - William Oliver
- Clinical and Cognitive Neuroscience Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, University of Georgia, Athens, GA, USA
| | - Brett Clementz
- Clinical and Cognitive Neuroscience Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, University of Georgia, Athens, GA, USA
| | - L Stephen Miller
- Neuropsychology and Memory Assessment Laboratory, Clinical Psychology Program, Department of Psychology, University of Georgia, Athens, GA, USA
| | - Lisa M Renzi-Hammond
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, University of Georgia, Athens, GA, 30602, USA.,Human Biofactors Laboratory, Institute of Gerontology, Department of Health Promotion and Behavior, University of Georgia, Athens, GA, USA
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46
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Loskutova E, Shah K, Flitcroft ID, Setti A, Butler JS, Nolan Y, Paudel N, Loughman J. Lutein and zeaxanthin: The possible contribution, mechanisms of action and implications of modern dietary intake for cognitive development in children. HRB Open Res 2019. [DOI: 10.12688/hrbopenres.12903.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background:Studies suggest that lutein and zeaxanthin may be important for cognitive development in children, but a comprehensive evidence synthesis is lacking. The purpose of this evidence synthesis was to analyse the available data regarding the role of lutein and zeaxanthin for cognition in children and propose a theoretical basis for future studies.Methods:The PubMed, Scopus, the ISRCTN registry and Cochrane Library databases were searched for studies that evaluated the relationship between lutein and zeaxanthin and cognitive function in children. Reference list and ancestry searches were performed on relevant articles. A total of 543 articles were identified, of which six cross-sectional studies were included.Results:The literature search revealed that the evidence concerning the effect of lutein and zeaxanthin on cognition in children is sparse. However, there is some preliminary evidence indicating a positive association between lutein and zeaxanthin and cognition in childhood.Conclusions:The cross-sectional nature of the few studies available and the lack of RCT data indicates a need for further investigation before any firm conclusions can be drawn.
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47
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Oliver W, Renzi-Hammond LM, Thorne SA, Clementz B, Miller LS, Hammond BR. Neural Activation During Visual Attention Differs in Individuals with High versus Low Macular Pigment Density. Mol Nutr Food Res 2019; 63:e1801052. [PMID: 30919588 DOI: 10.1002/mnfr.201801052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/25/2019] [Indexed: 11/08/2022]
Abstract
SCOPE The neural efficiency hypothesis for lutein (L) and zeaxanthin (Z) suggests that higher levels of L+Z in the central nervous system (CNS) are predictive of stronger stimulus-specific brain responses. Past research suggests that supplementing L+Z can improve neural processing speed and cognitive function across multiple domains, which supports this hypothesis. The purpose of this study is to determine the extent to which CNS L+Z levels predict brain responses using an attentionally taxing task. METHODS AND RESULTS Macular pigment optical density (MPOD) is measured at baseline in 85 participants ranging in age from 18-92 years. Brain activation is measured using dense array electroencephalography. Stimuli evoking the signal include a grating array of vertical bars, oscillating at four driving frequencies. Significant stimulus-specific interactions are detected between attend condition, location, and age (p < .002) for unattended image locations, and between age and location (p < .008) for attended locations. Although no differences are found across age by MPOD, this measure is found to be predictive of neural power at parafoveal bar locations (R2 .080). CONCLUSION CNS L+Z status is related to differences in brain activation in conditions designed to stress visual attention. These differences are strongest for older subjects.
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Affiliation(s)
- William Oliver
- Clinical and Cognitive Neuroscience Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA
| | - Lisa M Renzi-Hammond
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA.,Human Biofactors Laboratory, Institute of Gerontology, Department of Health Promotion and Behavior, The University of Georgia, Athens, GA, 30602, USA
| | - S Anna Thorne
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA.,Athens Community Council on Aging, Athens, GA, 30602, USA
| | - Brett Clementz
- Clinical and Cognitive Neuroscience Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA
| | - L Stephen Miller
- Neuropsychology and Memory Assessment Laboratory, Clinical Psychology Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA
| | - Billy R Hammond
- Vision Sciences Laboratory, Behavioral and Brain Sciences Program, Department of Psychology, The University of Georgia, Athens, GA, 30602, USA.,Human Biofactors Laboratory, Institute of Gerontology, Department of Health Promotion and Behavior, The University of Georgia, Athens, GA, 30602, USA
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Cannavale CN, Hassevoort KM, Edwards CG, Thompson SV, Burd NA, Holscher HD, Erdman JW, Cohen NJ, Khan NA. Serum Lutein is related to Relational Memory Performance. Nutrients 2019; 11:nu11040768. [PMID: 30986960 PMCID: PMC6521141 DOI: 10.3390/nu11040768] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 12/14/2022] Open
Abstract
Dietary carotenoids, plant pigments with anti-oxidant properties, accumulate in neural tissue and are often found in lower concentrations among individuals with obesity. Given previous evidence of negative associations between excess adiposity and memory, it is possible that greater carotenoid status may confer neuroprotective effects among persons with overweight or obesity. This study aimed to elucidate relationships between carotenoids assessed in diet, serum, and the macula (macular pigment optical density (MPOD)) and relational memory among adults who are overweight or obese. Adults aged 25-45 years (N = 94) completed a spatial reconstruction task. Task performance was evaluated for accuracy of item placement during reconstruction relative to the location of the item during the study phase. Dietary carotenoids were assessed using 7-day diet records. Serum carotenoids were measured using high-performance liquid chromatography. Hierarchical linear regression analyses were used to determine the relationship between carotenoids and task performance. Although initial correlations indicated that dietary lutein, beta-carotene, and serum beta-carotene were positively associated with memory performance, these relationships were not sustained following adjustment for age, sex, and BMI. Serum lutein remained positively associated with accuracy in object binding and inversely related to misplacement error after controlling for covariates. Macular carotenoids were not related to memory performance. Findings from this study indicate that among the carotenoids evaluated, lutein may play an important role in hippocampal function among adults who are overweight or obese.
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Affiliation(s)
- Corinne N Cannavale
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Kelsey M Hassevoort
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Center for Brain Plasticity, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Caitlyn G Edwards
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Sharon V Thompson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Nicholas A Burd
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Hannah D Holscher
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - John W Erdman
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Neal J Cohen
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Center for Brain Plasticity, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
| | - Naiman A Khan
- Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA.
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Falcone PH, Nieman KM, Tribby AC, Vogel RM, Joy JM, Moon JR, Slayton CA, Henigman MM, Lasrado JA, Lewis BJ, Fonseca BA, Herrlinger KA. The attention-enhancing effects of spearmint extract supplementation in healthy men and women: a randomized, double-blind, placebo-controlled, parallel trial. Nutr Res 2019; 64:24-38. [DOI: 10.1016/j.nutres.2018.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 12/20/2022]
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50
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Khan NA, Cannavale C, Iwinski S, Liu R, McLoughlin GM, Steinberg LG, Walk AM. Visceral Adiposity and Diet Quality Are Differentially Associated With Cognitive Abilities and Early Academic Skills Among Preschool-Age Children. Front Pediatr 2019; 7:548. [PMID: 32010649 PMCID: PMC6979276 DOI: 10.3389/fped.2019.00548] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 12/16/2019] [Indexed: 11/13/2022] Open
Abstract
Background: Visceral adipose tissue (VAT) and diet quality influence cognitive health in preadolescents; however, these relationships remain understudied among preschool-age children. Objectives: Investigate the relationship between VAT, diet quality, academic skills, and cognitive abilities among preschool-age children. Methods: Children between 4 and 5 years (N = 57) were enrolled in a cross-sectional study. Woodcock Johnson Early Cognitive and Academic Development Test (ECAD™) was utilized to assess General Intellectual Ability, Early Academic Skills, and Expressive Language. DXA was used to assess VAT. Diet quality was measured using the Healthy Eating Index-2015 (HEI-2015) based on 7-day food records. Results: Greater VAT was associated with poorer Early Academic Skills (r = -0.28, P = 0.03) whereas a diet pattern that included Fatty Acids, Whole Grains, Saturated Fats, Seafood and Plant Proteins, Total Vegetables, and Dairy was positively associated with General Intellectual Ability (r = 0.26, P = 0.04). Conclusions: Higher VAT is negatively related to Early Academic Skills whereas diet quality was positively and selectively related to intellectual abilities among preschool-age children. These findings indicate that the negative impact of abdominal adiposity on academic skills is evident as early as preschool-age while providing preliminary support for the potentially beneficial role of diet quality on cognitive abilities in early childhood.
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Affiliation(s)
- Naiman A Khan
- Department of Kinesiology and Community Health, University of Illinois, Champaign, IL, United States.,Neuroscience Program, University of Illinois, Champaign, IL, United States.,Division of Nutritional Sciences, University of Illinois, Champaign, IL, United States
| | - Corinne Cannavale
- Neuroscience Program, University of Illinois, Champaign, IL, United States
| | - Samantha Iwinski
- Department of Human Development and Family Studies, University of Illinois, Champaign, IL, United States
| | - Ruyu Liu
- Division of Nutritional Sciences, University of Illinois, Champaign, IL, United States
| | | | - Linda G Steinberg
- Department of Kinesiology and Community Health, University of Illinois, Champaign, IL, United States
| | - Anne M Walk
- Department of Psychology, Eastern Illinois University, Charleston, IL, United States
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