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Shi Y, Fan C, Li K, Yuan M, Shi T, Qian S, Wu H. Fish oil fat emulsion alleviates traumatic brain injury in mice by regulation of microglia polarization. Neurosci Lett 2023; 804:137217. [PMID: 36997019 DOI: 10.1016/j.neulet.2023.137217] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/22/2023] [Accepted: 03/27/2023] [Indexed: 03/30/2023]
Abstract
Microglia activation, a hallmark of brain neuroinflammation, contributes to the secondary damage following traumatic brain injury (TBI). To explore the potential roles of different fat emulsions-long chain triglyceride (LCT) / medium chain triglyceride (MCT) and fish oil (FO) fat emulsion in neuroprotection and neuroinflammation in TBI, in this study, we first generated the controlled cortical impact (CCI) model of TBI mice. Then either LCT/MCT or FO fat emulsion treated mice were studied by Nissl staining to assess the lesion volume. Sham and TBI mice treated with 0.9% saline were used as controls. The fatty acid composition in different TBI mouse brains was further evaluated by gas chromatography. Immunofluorescent staining and quantitative RT-PCR both demonstrated the suppression of pro-inflammatory microglia and upregulated anti-inflammatory microglia in FO fat emulsion treated TBI brain or primary microglia induced by lipopolysaccharide (LPS) in vitro. Furthermore, motor and cognitive behavioral tests showed FO fat emulsion could partially improve the motor function in TBI mice. Together, our results indicate that FO fat emulsion significantly alleviates the TBI injury and neuroinflammation probably by regulating microglia polarization.
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Affiliation(s)
- Yuan Shi
- Department of Neurobiology, Beijing Institute of Basic Medical Sciences, 100850 Beijing, China
| | - Chaonan Fan
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 100045 Beijing, China
| | - Kechun Li
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 100045 Beijing, China
| | - Mengqi Yuan
- Department of Neurobiology, Beijing Institute of Basic Medical Sciences, 100850 Beijing, China
| | - Taoxing Shi
- Department of Neurobiology, Beijing Institute of Basic Medical Sciences, 100850 Beijing, China
| | - Suyun Qian
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 100045 Beijing, China.
| | - Haitao Wu
- Department of Neurobiology, Beijing Institute of Basic Medical Sciences, 100850 Beijing, China; Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, 226019 Nantong, China.
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Paik B, Tong L. Polymorphisms in Lymphotoxin-Alpha as the "Missing Link" in Prognosticating Favourable Response to Omega-3 Supplementation for Dry Eye Disease: A Narrative Review. Int J Mol Sci 2023; 24:ijms24044236. [PMID: 36835647 PMCID: PMC9965360 DOI: 10.3390/ijms24044236] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/08/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Elements of inflammation are found in almost all chronic ocular surface disease, such as dry eye disease. The chronicity of such inflammatory disease speaks to the dysregulation of innate and adaptive immunity. There has been a rising interest in omega-3 fatty acids to attenuate inflammation. While many cell-based (in vitro) studies verify the anti-inflammatory effects of omega-3, different human trials report discordant outcomes after supplementation. This may be due to underlying inter-individual differences in inflammatory cytokine metabolism (such as tumor necrosis factor alpha (TNF-α)), in which genetic differences might play a role, such as polymorphisms in the lymphotoxin alpha (LT-α) gene. Inherent TNF-α production affects omega-3 response and is also associated with LT-α genotype. Therefore, LT-α genotype might predict omega-3 response. Using the NIH dbSNP, we analyzed the relative frequency of LT-α polymorphisms among various ethnicities, each weighted by the genotype's probability of positive response. While the probability of response for unknown LT-α genotypes are 50%, there is greater distinction in response rates between various genotypes. Hence, there is value in genetic testing to prognosticate an individual's response to omega-3.
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Affiliation(s)
- Benjamin Paik
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Louis Tong
- Department of Cornea and External Eye Disease, Singapore National Eye Center, Singapore 168751, Singapore
- Ocular Surface Research Group, Singapore Eye Research Institute, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore 169857, Singapore
- Correspondence: ; Tel.: +65-6227-7255
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Chang WL, Azlan A, Noor SM, Ismail IZ, Loh SP. Short-Term Intake of Yellowstripe Scad versus Salmon Did Not Induce Similar Effects on Lipid Profile and Inflammatory Markers among Healthy Overweight Adults despite Their Comparable EPA+DHA Content. Nutrients 2021; 13:3524. [PMID: 34684525 PMCID: PMC8539692 DOI: 10.3390/nu13103524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 11/25/2022] Open
Abstract
Yellowstripe scad (YSS) have comparable eicosapentaenoic acid and docosahexaenoic acid (EPA+DHA) content to salmon. We aimed to compare the effects of YSS and salmon on lipid profile and inflammatory markers. A randomized crossover trial with two diet periods was conducted among healthy overweight (with BMI 23.0-27.4 kg/m2) Malaysian adults aged 21-55 years. Steamed whole YSS fish (≈385 g whole fish/day) or salmon fillets (≈246 g fillet/day) were given for eight weeks (3 days per week), retaining approximately 1000 mg EPA+DHA per day. Diets were switched after an 8-week washout period. Fasting blood samples were collected before and after each diet period. A total of 49 subjects participated in the intervention (35% male and 65% female; mean age 29 (7) years). YSS did not induce any significant changes in outcome measures. However, the consumption of salmon as compared with YSS was associated with reduction in triglycerides (between-group difference: -0.09 mmol/1, p = 0.01), VLDL-cholesterol (between-group difference: -0.04 mmol/1, p = 0.01), atherogenic index of plasma (between-group difference: -0.05 mmol/1, p = 0.006), and IL-6 (between-group difference: -0.01 pg/mL, p = 0.03). Despite their comparable EPA+DHA content, short-term consumption of salmon but not YSS induced significant changes in lipid profile and inflammatory markers. Larger clinical trials are needed to confirm the findings.
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Affiliation(s)
- Wei Lin Chang
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (W.L.C.); (A.A.)
| | - Azrina Azlan
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (W.L.C.); (A.A.)
| | - Sabariah Md Noor
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Irmi Zarina Ismail
- Department of Family Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Su Peng Loh
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (W.L.C.); (A.A.)
- Department of Nutrition, Faculty of Public Health, Universitas Airlangga, Jl. Mulyorejo Kampus C, Surabaya 60115, Indonesia
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Non-drug interventions in glaucoma: Putative roles for lifestyle, diet and nutritional supplements. Surv Ophthalmol 2021; 67:675-696. [PMID: 34563531 DOI: 10.1016/j.survophthal.2021.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 09/15/2021] [Accepted: 09/20/2021] [Indexed: 02/06/2023]
Abstract
Glaucoma is a major ocular neurodegenerative disease characterized by progressive retinal ganglion cells degeneration and sight loss. Current treatment options have been limited to reducing intraocular pressure (IOP), known as the leading risk factor for this disease; however, glaucoma can develop even with low or normal IOP and progress despite controlling IOP values. Lifestyle, dietary habits, and supplementation may influence some of the risk factors and pathophysiological mechanisms underlying glaucoma development and progression; thus, the role of this complementary and alternative medicine in glaucoma has received great interest from both patients and ophthalmologists. We provide a summary of the current evidence concerning the relationship between lifestyle, dietary habits, and effects of supplements on the incidence and progression of glaucoma and their targets and associated mechanisms. The data suggest the existence of a therapeutic potential that needs to be further explored with both preclinical and rigorous clinical studies.
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Zhu Y, Peng Y, Wen J, Quek SY. A Comparison of Microfluidic-Jet Spray Drying, Two-Fluid Nozzle Spray Drying, and Freeze-Drying for Co-Encapsulating β-Carotene, Lutein, Zeaxanthin, and Fish Oil. Foods 2021; 10:foods10071522. [PMID: 34359390 PMCID: PMC8303781 DOI: 10.3390/foods10071522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/08/2021] [Accepted: 06/17/2021] [Indexed: 11/16/2022] Open
Abstract
Various microencapsulation techniques can result in significant differences in the properties of dried microcapsules. Microencapsulation is an effective approach to improve fish oil properties, including oxidisability and unpleasant flavour. In this study, β-carotene, lutein, zeaxanthin, and fish oil were co-encapsulated by microfluidic-jet spray drying (MFJSD), two-fluid nozzle spray drying (SD), and freeze-drying (FD), respectively. The aim of the current study is to understand the effect of different drying techniques on microcapsule properties. Whey protein isolate (WPI) and octenylsuccinic anhydride (OSA) modified starch were used as wall matrices in this study for encapsulating carotenoids and fish oil due to their strong emulsifying properties. Results showed the MFJSD microcapsules presented uniform particle size and regular morphological characteristics, while the SD and FD microcapsules presented a large distribution of particle size and irregular morphological characteristics. Compared to the SD and FD microcapsules, the MFJSD microcapsules possessed higher microencapsulation efficiency (94.0–95.1%), higher tapped density (0.373–0.652 g/cm3), and higher flowability (the Carr index of 16.0–30.0%). After a 4-week storage, the SD microcapsules showed the lower retention of carotenoids, as well as ω-3 LC-PUFAs than the FD and MFJSD microcapsules. After in vitro digestion trial, the differences in the digestion behaviours of the microcapsules mainly resulted from the different wall materials, but independent of drying methods. This study has provided an alternative way of delivering visual-beneficial compounds via a novel drying method, which is fundamentally essential in both areas of microencapsulation application and functional food development.
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Affiliation(s)
- Yongchao Zhu
- Food Science, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand; (Y.Z.); (Y.P.)
| | - Yaoyao Peng
- Food Science, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand; (Y.Z.); (Y.P.)
| | - Jingyuan Wen
- School of Pharmacy, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand;
| | - Siew Young Quek
- Food Science, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand; (Y.Z.); (Y.P.)
- Riddet Institute, Massey University, Palmerston North 4442, New Zealand
- Correspondence:
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Ayee MAA, Bunker BC, De Groot JL. Membrane modulatory effects of omega-3 fatty acids: Analysis of molecular level interactions. CURRENT TOPICS IN MEMBRANES 2020; 86:57-81. [PMID: 33837698 DOI: 10.1016/bs.ctm.2020.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bioactive omega-3 polyunsaturated fatty acids have been shown to reduce the risk of death in patients with cardiovascular disease and alleviate the symptoms of other inflammatory diseases. However, the mechanisms of action of these effects remain unclear. It has been postulated that omega-3 polyunsaturated fatty acids modify cell membranes by incorporation into the membrane and altering the signaling properties of cellular receptors. In this chapter, we explore the effects of omega-3 polyunsaturated fatty acids on cell membrane structure and function. We present a review of the current evidence for the health benefits of these compounds and explore the molecular mechanisms through which omega-3 polyunsaturated fatty acids interact with membrane lipids and modulate bilayer structure. Using computational models of multicomponent phospholipid bilayers, we assess the consequences of incorporation of these fatty acids on membrane lipid packing, water permeation, and membrane structure.
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Affiliation(s)
- Manuela A A Ayee
- Department of Engineering, Dordt University, Sioux Center, IA, United States.
| | - Brendan C Bunker
- Department of Engineering, Dordt University, Sioux Center, IA, United States
| | - Jordan L De Groot
- Department of Engineering, Dordt University, Sioux Center, IA, United States
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Maisto R, Trotta MC, Petrillo F, Izzo S, Cuomo G, Alfano R, Hermenean A, Barcia JM, Galdiero M, Platania CBM, Bucolo C, D'Amico M. Resolvin D1 Modulates the Intracellular VEGF-Related miRNAs of Retinal Photoreceptors Challenged With High Glucose. Front Pharmacol 2020; 11:235. [PMID: 32210819 PMCID: PMC7069219 DOI: 10.3389/fphar.2020.00235] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/20/2020] [Indexed: 12/19/2022] Open
Abstract
Stimulation of retinal photoreceptors with elevated glucose concentration (30 mM) for 96 h, served as diabetic retinopathy in vitro model to study Resolvin D1 (50 nM) effects on neovascularization. VEGF and anti-angiogenic miR-20a-3p, miR-20a-5p, miR-106a-5p, and miR-20b expression was assessed either in photoreceptors exposed to HG or in exosomes released by those cells. High glucose increased VEGF levels and concurrently decreased anti-angiogenic miRNAs content in photoreceptors and exosomes. RvD1 reverted the effects of glucose damage in photoreceptors and exosomal pro-angiogenic potential, tested with the HUVEC angiogenesis assay. By activating FPR2 receptor, RvD1 modulated both the expression of anti-angiogenic miRNA, which decrease VEGF, and the pro-angiogenic potential of exosomes released by primary retinal cells. HUVEC transfection with miR-20a-3p, miR-20a-5p, miR-106a-5p, and miR-20b antagomirs, followed by exposure to exosomes from photoreceptors, confirmed the VEGF-related miRNAs mechanism and the anti-angiogenic effects of RvD1.
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Affiliation(s)
- Rosa Maisto
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Consiglia Trotta
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Francesco Petrillo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Sara Izzo
- Multidisciplinary Department of Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giovanna Cuomo
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Roberto Alfano
- Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anca Hermenean
- Institute of Life Sciences, Vasile Goldis Western University of Arad, Arad, Romania
| | - Jorge Miquel Barcia
- School of Medicine, Catholic University of Valencia "Saint Vicente Martir", Valencia, Spain
| | - Marilena Galdiero
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Chiara Bianca Maria Platania
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Claudio Bucolo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Michele D'Amico
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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Trotta MC, Pieretti G, Petrillo F, Alessio N, Hermenean A, Maisto R, D'Amico M. Resolvin D1 reduces mitochondrial damage to photoreceptors of primary retinal cells exposed to high glucose. J Cell Physiol 2019; 235:4256-4267. [PMID: 31612492 DOI: 10.1002/jcp.29303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/30/2019] [Indexed: 01/04/2023]
Abstract
No study has investigated the interaction of Resolvin D1 (RvD1) with mitochondrial damage of retinal cells caused by diabetes. This study aims to investigate the effects of RvD1 (50 nM) on morphological and biochemical indicators of mitochondrial damage in primary retinal cells exposed to 30 mM d-glucose high glucose (HG). HG-cells exhibited photoreceptor damage characterized by short and small mitochondria with prevalent mitochondrial disruption, fragmentation, and aggregation. The cells had low mitochondrial transporters TIMM44 and TOMM40, Connexin 43, NAD/NADH ratio, and ATP levels, whereas increased cytosolic cytochrome c. Moreover, they expressed high cytosolic metalloproteinase matrix metallopeptidase 9 (MMP-9) and MMP-2 activity. HG-cells treated with RvD1 (50 nM) showed reduced reactive oxygen species levels, improved mitochondrial morphology and function, promoted mitochondrial DNA repair by OGG1, and reduced cell apoptosis and metalloproteinase activity. Therefore, RvD1 induces protection from high glucose-load to the retinal cell and promotes their survival by decreasing cytosolic MMP and mitochondrial damage.
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Affiliation(s)
- Maria Consiglia Trotta
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Gorizio Pieretti
- Multidisciplinary Department of Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Francesco Petrillo
- Department of Ophthalmology, School of Medicine, University of Catania, Catania, Italy
| | - Nicola Alessio
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anca Hermenean
- Department of Life Science, Vasile Goldis Western University of Arad, Arad, Romania
| | - Rosa Maisto
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Michele D'Amico
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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de Gaetano M, McEvoy C, Andrews D, Cacace A, Hunter J, Brennan E, Godson C. Specialized Pro-resolving Lipid Mediators: Modulation of Diabetes-Associated Cardio-, Reno-, and Retino-Vascular Complications. Front Pharmacol 2018; 9:1488. [PMID: 30618774 PMCID: PMC6305798 DOI: 10.3389/fphar.2018.01488] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/05/2018] [Indexed: 12/18/2022] Open
Abstract
Diabetes and its associated chronic complications present a healthcare challenge on a global scale. Despite improvements in the management of chronic complications of the micro-/macro-vasculature, their growing prevalence and incidence highlights the scale of the problem. It is currently estimated that diabetes affects 425 million people globally and it is anticipated that this figure will rise by 2025 to 700 million people. The vascular complications of diabetes including diabetes-associated atherosclerosis and kidney disease present a particular challenge. Diabetes is the leading cause of end stage renal disease, reflecting fibrosis leading to organ failure. Moreover, diabetes associated states of inflammation, neo-vascularization, apoptosis and hypercoagulability contribute to also exacerbate atherosclerosis, from the metabolic syndrome to advanced disease, plaque rupture and coronary thrombosis. Current therapeutic interventions focus on regulating blood glucose, glomerular and peripheral hypertension and can at best slow the progression of diabetes complications. Recently advanced knowledge of the pathogenesis underlying diabetes and associated complications revealed common mechanisms, including the inflammatory response, insulin resistance and hyperglycemia. The major role that inflammation plays in many chronic diseases has led to the development of new strategies aiming to promote the restoration of homeostasis through the "resolution of inflammation." These strategies aim to mimic the spontaneous activities of the 'specialized pro-resolving mediators' (SPMs), including endogenous molecules and their synthetic mimetics. This review aims to discuss the effect of SPMs [with particular attention to lipoxins (LXs) and resolvins (Rvs)] on inflammatory responses in a series of experimental models, as well as evidence from human studies, in the context of cardio- and reno-vascular diabetic complications, with a brief mention to diabetic retinopathy (DR). These data collectively support the hypothesis that endogenously generated SPMs or synthetic mimetics of their activities may represent lead molecules in a new discipline, namely the 'resolution pharmacology,' offering hope for new therapeutic strategies to prevent and treat, specifically, diabetes-associated atherosclerosis, nephropathy and retinopathy.
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Affiliation(s)
- Monica de Gaetano
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Caitriona McEvoy
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
- Renal Transplant Program, University Health Network, Toronto, ON, Canada
| | - Darrell Andrews
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Antonino Cacace
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Jonathan Hunter
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Eoin Brennan
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
| | - Catherine Godson
- UCD Diabetes Complications Research Centre, Conway Institute and UCD School of Medicine, University College Dublin, Dublin, Ireland
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Romeo Villadóniga S, Rodríguez García E, Sagastagoia Epelde O, Álvarez Díaz MD, Domingo Pedrol JC. Effects of Oral Supplementation with Docosahexaenoic Acid (DHA) plus Antioxidants in Pseudoexfoliative Glaucoma: A 6-Month Open-Label Randomized Trial. J Ophthalmol 2018; 2018:8259371. [PMID: 30310698 PMCID: PMC6166377 DOI: 10.1155/2018/8259371] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/06/2018] [Indexed: 12/25/2022] Open
Abstract
PURPOSE To assess the effects of antioxidant oral supplementation based on docosahexaenoic acid (DHA) in pseudoexfoliative (PEX) glaucoma. PATIENTS AND METHODS A prospective 6-month open-label randomized controlled trial was conducted in patients with PEX glaucoma and adequate intraocular pressure (IOP) control. Patients in the DHA group received a high-rich DHA (1 g) nutraceutical formulation. Ophthalmological examination, DHA erythrocyte membrane content (% total fatty acids), plasma total antioxidant capacity (TAC), plasma malondialdehyde (MDA), and plasma IL-6 levels were assessed. RESULTS Forty-seven patients (DHA group 23, controls 24; mean age 70.3 years) were included. In the DHA group, the mean IOP in the right eye decreased from 14.7 [3.3] mmHg at baseline to 12.1 [1.5] mmHg at 6 months (P=0.01). In the left eye, IOP decreased from 15.1 [3.3] mmHg at baseline to 12.2 [2.4] mmHg at 6 months (P=0.007). DHA erythrocyte content increased in the DHA group, with significant differences versus controls at 3 months and 6 months (8.1% [0.9] vs. 4.4% [0.7]; P < 0.0001). At 6 months and in the DHA group only, TAC levels as compared with baseline increased significantly (919.7 [117.9] vs. 856.9 [180.3] µM copper-reducing equivalents; P=0.01), and both MDA (4.4 [0.8] vs. 5.2 [1.1] nmol/mL; P = 0.02) and IL-6 (2.8 [1.3] vs. 4.7 [2.3] pg/mL; P=0.006) levels were lower than in controls. CONCLUSIONS Targeting pathophysiology mechanisms of PEX glaucoma by reducing oxidative stress and inflammation with a high-rich DHA supplement might be an attractive therapeutic approach. Despite the short duration of treatment, decrease in IOP supports the clinical significance of DHA supplementation.
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Affiliation(s)
| | - Elena Rodríguez García
- Service of Ophthalmology, Complejo Hospitalario Universitario de Ferrol, Ferrol, A Coruña, Spain
| | - Olatz Sagastagoia Epelde
- Clinical Analysis Laboratory, Complejo Hospitalario Universitario de Ferrol, Ferrol, A Coruña, Spain
| | - M. Dolores Álvarez Díaz
- Service of Ophthalmology, Complejo Hospitalario Universitario de Ferrol, Ferrol, A Coruña, Spain
| | - Joan Carles Domingo Pedrol
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain
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