1
|
Hu W, Seah V, Huang V, Kim JE. Effect of Antioxidant Supplementation on Macular Pigment Optical Density and Visual Functions: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials. Adv Nutr 2024; 15:100216. [PMID: 38582248 PMCID: PMC11052915 DOI: 10.1016/j.advnut.2024.100216] [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: 06/21/2023] [Revised: 03/14/2024] [Accepted: 03/29/2024] [Indexed: 04/08/2024] Open
Abstract
Antioxidants are bioactive molecules that function to scavenge free radicals and balance oxidative stress. Although all antioxidants can act as reactive oxygen species scavengers, their efficacy on eye health may vary. Moreover, the comparative effectiveness and potential additive effect between groups of antioxidants, hitherto, have not been systematically studied. A systematic review and network meta-analysis were conducted to investigate the comparative or additive effect of dietary antioxidant supplements on eye health. Four databases (PubMed, Embase, CINAHL, and Cochrane) were searched, and relevant randomized controlled trials were identified. Out of 60 articles selected for systematic review, 38 were included in the network meta-analysis, categorized into 8 distinct antioxidant-supplemented groups and placebo. All groups significantly increased macular pigment optical density and contrast sensitivity at low spatial frequency, whereas only the antioxidant mixture + lutein (L) + fatty acid combination exhibited significant improvements in visual acuity (hazard ratio = -0.15; 95% confidence interval: -0.28, -0.02) and L + zeaxanthin combination for photostress recovery time (hazard ratio = -5.75; 95% confidence interval: -8.80, -1.70). Especially, the L + zeaxanthin + fatty acid combination was ranked best for macular pigment optical density (surface under the cumulative ranking: 99.3%) and second best for contrast sensitivity at low spatial frequency (67.7%). However, these findings should be interpreted with caution due to low quality of evidence, primarily influenced by indirectness and potential publication bias. Overall, antioxidant supplementation was estimated to improve eye health parameters, whereas different combinations of antioxidants may also have varying effects on improving visual health from multiple perspectives. This study was registered at PROSPERO as CRD42022369250.
Collapse
Affiliation(s)
- Weili Hu
- Department of Food Science and Technology, National University of Singapore, Singapore
| | - Vernice Seah
- Department of Food Science and Technology, National University of Singapore, Singapore
| | - Vanessa Huang
- Department of Food Science and Technology, National University of Singapore, Singapore
| | - Jung Eun Kim
- Department of Food Science and Technology, National University of Singapore, Singapore.
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Characterization and Bioactive Potential of Carotenoid Lutein from Gordonia rubripertncta GH-1 Isolated from Traditional Pixian Douban. Foods 2022; 11:foods11223649. [PMID: 36429243 PMCID: PMC9689138 DOI: 10.3390/foods11223649] [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: 09/27/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
The characterization and bioactive properties of carotenoid produced by Gordonia rubripertincta GH-1 originating from Pixian Douban (PXDB), the Chinese traditional condiment, was investigated. The produced and purified yellow pigment was characterized by ultraviolet-visible spectroscopy (UV-Vis), Fourier transformed infrared (FTIR), nuclear magnetic resonance (NMR), and high-resolution mass spectrometry (HRMS), and was identified as carotenoid lutein. Additionally, the bioactive activity of lutein from G. rubripertincta GH-1 was evaluated by measuring the free radical scavenging capacity in vitro and feeding zebrafish lutein through aqueous solution. The results showed that the carotenoid lutein had strong antioxidant capacity and a protective effect on zebrafish eye cells, which could inhibit the apoptosis of eye cells in a concentration dependent manner. The results suggested that carotenoid lutein from G. rubripertincta GH-1 could be utilized as a potential source of natural antioxidants or functional additives for food/pharmaceutical industries.
Collapse
|
4
|
Yamane Y, Mochiji M, Ichioka S, Takayanagi Y, Ishida A, Obana A, Tanito M. Effects of water chestnut ( Tarpa bispinosa Roxb.) extract/lutein on fingertip-measured advanced glycation endproduct/carotenoid levels. Free Radic Res 2022; 56:282-289. [PMID: 35687659 DOI: 10.1080/10715762.2022.2085098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
This pilot study tested the effects of the supplements containing water chestnut extract and carotenoids on antiglycation and carotenoid levels. Twenty Japanese subjects (mean age, 67 ± 7 years; 13 men) ingested 200 mg of Tarpa bispinosa Roxb. extract (containing >50 mg of polyphenols), 20 mg of lutein, and 3 mg of zeaxanthin daily for 3 months. Advanced glycation end product (AGEs) levels were estimated by fingertip skin autofluorescence using the AGEs Sensor; carotenoid levels were estimated by pressure-mediated reflection spectroscopy of the fingertips using the Veggie Meter. Compared to baseline, the mean AGEs score decreased significantly (0.55 ± 0.04 arbitrary units (AU) vs. 0.52 ± 0.07 AU, p = 0.03); the mean carotenoid score increased significantly (256 ± 68 optical density (OD) vs. 302 ± 109 OD, p = 0.02) at 3 months. Blood pressure, body weight, visual acuity, refractive error, and intraocular pressure were equivalent between baseline and 3 months. Compared to baseline, 13 (65%) patients had decreased AGEs scores, and 14 (70%) had increased carotenoid scores at 3 months; 9 (45%) subjects had both decreased AGEs scores and increased carotenoid scores, and two (10%) subjects had an inverse response. Co-administration of water chestnut extract and lutein for 3 months decreased the AGEs and increased the carotenoids estimated in the fingertip skin of humans.
Collapse
Affiliation(s)
- Yukari Yamane
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Mihoko Mochiji
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Sho Ichioka
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Yuji Takayanagi
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Akiko Ishida
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Akira Obana
- Department of Ophthalmology, Seirei Hamamatsu General Hospital, Hamamatsu, Japan
| | - Masaki Tanito
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| |
Collapse
|
5
|
Mrowicka M, Mrowicki J, Kucharska E, Majsterek I. Lutein and Zeaxanthin and Their Roles in Age-Related Macular Degeneration-Neurodegenerative Disease. Nutrients 2022; 14:nu14040827. [PMID: 35215476 PMCID: PMC8874683 DOI: 10.3390/nu14040827] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/03/2022] [Accepted: 02/06/2022] [Indexed: 12/11/2022] Open
Abstract
Lutein and zeaxanthin belong to the xanthophyll family of carotenoids, which are pigments produced by plants. Structurally, they are very similar, differing only slightly in the arrangement of atoms. Key sources of these carotenoids include kale, savoy cabbage, spinach, broccoli, peas, parsley, corn, and egg yolks. The recommended daily intake of lutein is approximately 10.0 mg and that of zeaxanthin is 2 mg. Lutein intake in adults varies, with average intakes being 1–2 mg/day. Due to the lack of synthesis of consumption of these compounds in humans, these substances are extremely important for the proper functioning of certain organs of the body (eye, skin, heart, intestines). Eating a lot of dark leafy vegetables and some fruits can help to prevent our bodies from developing diseases. The protective effects of carotenoids are mainly related to their defense against oxidative stress and their ability to scavenge free radicals. Lutein and zeaxanthin are the only dietary carotenoids that accumulate in the retina, specifically the macula, and are called macular pigments. These carotenoids are concentrated by the action of specific binding proteins such as StARD3, which binds lutein, and GSTP1, which binds zeaxanthin and its dietary metabolite, mesozeaxanthin. It has been shown that supportive therapy with lutein and zeaxanthin can have a beneficial effect in delaying the progression of eye diseases such as age-related macular degeneration (AMD) and cataracts. This article presents the current state of knowledge on the role of lutein and zeaxanthin, especially from human studies targeting their metabolism and bioavailability, with recommendations to consume xanthophyll-rich foods.
Collapse
Affiliation(s)
- Małgorzata Mrowicka
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 90-419 Lodz, Poland; (M.M.); (J.M.)
| | - Jerzy Mrowicki
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 90-419 Lodz, Poland; (M.M.); (J.M.)
| | - Ewa Kucharska
- Department of Gerontology, Geriatrics and Social Work, Jesuit University Ignatianum, 31-501 Krakow, Poland;
| | - Ireneusz Majsterek
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 90-419 Lodz, Poland; (M.M.); (J.M.)
- Correspondence:
| |
Collapse
|
6
|
Lem DW, Davey PG, Gierhart DL, Rosen RB. A Systematic Review of Carotenoids in the Management of Age-Related Macular Degeneration. Antioxidants (Basel) 2021; 10:1255. [PMID: 34439503 PMCID: PMC8389280 DOI: 10.3390/antiox10081255] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 01/14/2023] Open
Abstract
Age-related macular degeneration (AMD) remains a leading cause of modifiable vision loss in older adults. Chronic oxidative injury and compromised antioxidant defenses represent essential drivers in the development of retinal neurodegeneration. Overwhelming free radical species formation results in mitochondrial dysfunction, as well as cellular and metabolic imbalance, which becomes exacerbated with increasing age. Thus, the depletion of systemic antioxidant capacity further proliferates oxidative stress in AMD-affected eyes, resulting in loss of photoreceptors, neuroinflammation, and ultimately atrophy within the retinal tissue. The aim of this systematic review is to examine the neuroprotective potential of the xanthophyll carotenoids lutein, zeaxanthin, and meso-zeaxanthin on retinal neurodegeneration for the purpose of adjunctive nutraceutical strategy in the management of AMD. A comprehensive literature review was performed to retrieve 55 eligible publications, using four database searches from PubMed, Embase, Cochrane Library, and the Web of Science. Epidemiology studies indicated an enhanced risk reduction against late AMD with greater dietary consumption of carotenoids, meanwhile greater concentrations in macular pigment demonstrated significant improvements in visual function among AMD patients. Collectively, evidence strongly suggests that carotenoid vitamin therapies offer remarkable synergic protection in the neurosensory retina, with the potential to serve as adjunctive nutraceutical therapy in the management of established AMD, albeit these benefits may vary among different stages of disease.
Collapse
Affiliation(s)
- Drake W. Lem
- College of Optometry, Western University of Health Sciences, Pomona, CA 91766, USA;
| | | | | | - Richard B. Rosen
- Department of Ophthalmology, New York Eye and Ear Infirmary of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| |
Collapse
|
7
|
Mitra S, Rauf A, Tareq AM, Jahan S, Emran TB, Shahriar TG, Dhama K, Alhumaydhi FA, Aljohani ASM, Rebezov M, Uddin MS, Jeandet P, Shah ZA, Shariati MA, Rengasamy KR. Potential health benefits of carotenoid lutein: An updated review. Food Chem Toxicol 2021; 154:112328. [PMID: 34111488 DOI: 10.1016/j.fct.2021.112328] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/30/2021] [Accepted: 06/04/2021] [Indexed: 12/15/2022]
Abstract
Carotenoids in food substances are believed to have health benefits by lowering the risk of diseases. Lutein, a carotenoid compound, is one of the essential nutrients available in green leafy vegetables (kale, broccoli, spinach, lettuce, and peas), along with other foods, such as eggs. As nutrition plays a pivotal role in maintaining human health, lutein, as a nutritional substance, confers promising benefits against numerous health issues, including neurological disorders, eye diseases, skin irritation, etc. This review describes the in-depth health beneficial effects of lutein. As yet, a minimal amount of literature has been undertaken to consider all its promising bioactivities. The step-by-step biosynthesis of lutein has also been taken into account in this review. Besides, this review demonstrates the drug interactions of lutein with β-carotene, as well as safety concerns and dosage. The potential benefits of lutein have been assessed against neurological disorders, eye diseases, cardiac complications, microbial infections, skin irritation, bone decay, etc. Additionally, recent studies ascertained the significance of lutein nanoformulations in the amelioration of eye disorders, which are also considered in this review. Moreover, a possible approach for the use of lutein in bioactive functional foods will be discussed.
Collapse
Affiliation(s)
- Saikat Mitra
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Swabi, Anbar, 23430, Khyber Pakhtunkhwa (KP), Pakistan.
| | - Abu Montakim Tareq
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, 4318, Bangladesh
| | - Shamima Jahan
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, 4318, Bangladesh
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, 4381, Bangladesh
| | | | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122, Uttar Pradesh, India
| | - Fahad A Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Maksim Rebezov
- V M Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, 26 Talalikhina St., Moscow, 109316, Russian Federation; Prokhorov General Physics Institute of the Russian Academy of Science, 38 Vavilova str., Moscow, 119991, Russian Federation
| | - Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh
| | - Philippe Jeandet
- University of Reims Champagne-Ardenne, Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, PO Box 1039, 51687, Reims Cedex 2, France
| | - Zafar Ali Shah
- Department of Chemistry, University of Swabi, Swabi, Anbar, 23430, Khyber Pakhtunkhwa (KP), Pakistan
| | - Mohammad Ali Shariati
- K.G. Razumovsky Moscow State University of Technologies and Management (the First Cossack University (MSUTM), Russian Federation
| | - Kannan Rr Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Private Bag X1106, Polokwane, Sovenga, 0727, South Africa.
| |
Collapse
|