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Adiponectin Mediates Dietary Omega-3 Long-Chain Polyunsaturated Fatty Acid Protection Against Choroidal Neovascularization in Mice

Journal article
Authors Z. J. Fu
R. Lieg
Z. X. Wang
Y. Gong
C. H. Liu
Y. Sun
B. Cakir
S. B. Burnim
S. S. Meng
Chatarina Löfqvist
J. P. SanGiovanni
Ann Hellström
L. E. H. Smith
Published in Investigative Ophthalmology & Visual Science
Volume 58
Issue 10
Pages 3862-3870
ISSN 0146-0404
Publication year 2017
Published at Institute of Neuroscience and Physiology
Institute of Neuroscience and Physiology, Department of Clinical Neuroscience
Pages 3862-3870
Language en
Keywords age-related macular degeneration, omega-3 long-chain polyunsaturated fatty acids, adiponectin neovascularization, anti-vegf agents, macular degeneration, matrix metalloproteinases, expression, risk, angiogenesis, retinopathy, adipor1, retina, cells, Ophthalmology
Subject categories Clinical Medicine


PURPOSE. Neovascular age-related macular degeneration (AMD) is a major cause of legal blindness in the elderly. Diets with omega3-long-chain-polyunsaturated-fatty-acid (omega 3-LCPUFA) correlate with a decreased risk of AMD. Dietary omega 3-LCPUFA versus omega 6-LCPUFA inhibits mouse ocular neovascularization, but the underlying mechanism needs further exploration. The aim of this study was to investigate if adiponectin (APN) mediated x omega 3-LCPUFA suppression of neovessels in AMD. METHODS. The mouse laser-induced choroidal neovascularization (CNV) model was used to mimic some of the inflammatory aspect of AMD. CNV was compared between wild-type (WT) and Apn(-/-) mice fed either otherwise matched diets with 2% x3 or 2% omega 6-LCPUFAs. Vldlr(-/-) mice were used to mimic some of the metabolic aspects of AMD. Choroid assay ex vivo and human retinal microvascular endothelial cell (HRMEC) proliferation assay in vitro was used to investigate the APN pathway in angiogenesis. Western blot for p-AMPK alpha/AMPK alpha and qPCR for Apn, Mmps, and IL-10 were used to define mechanism. RESULTS. omega 3-LCPUFA intake suppressed laser-induced CNV in WT mice; suppression was abolished with APN deficiency. omega 3-LCPUFA, mediated by APN, decreased mouse Mmps expression. APN deficiency decreased AMPK alpha phosphorylation in vivo and exacerbated choroid-sprouting ex vivo. APN pathway activation inhibited HRMEC proliferation and decreased Mmps. In Vldlr(-/-) mice, omega 3-LCPUFA increased retinal AdipoR1 and inhibited NV. omega 3-LCPUFA decreased IL-10 but did not affect Mmps in Vldlr(-/-) retinas. CONCLUSIONS. APN in part mediated omega 3-LCPUFA inhibition of neovascularization in two mouse models of AMD. Modulating the APN pathway in conjunction with a omega 3-LCPUFA-enriched-diet may augment the beneficial effects of omega 3-LCPUFA in AMD patients.

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