Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice
Age-related macular degeneration (AMD) is a major cause of irreversible loss of vision with 80–90% of patients demonstrating dry type AMD. Dry AMD could possibly be prevented by polyphenol-rich medicinal foods by the inhibition of N-retinylidene-N-retinylethanolamine (A2E)-induced oxidative stress a...
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MDPI AG
2020-04-01
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| author | Dong Hee Kim Yae Rim Choi Jaewon Shim Yun-Sang Choi Yun Tai Kim Mina Kyungmin Kim Min Jung Kim |
| author_facet | Dong Hee Kim Yae Rim Choi Jaewon Shim Yun-Sang Choi Yun Tai Kim Mina Kyungmin Kim Min Jung Kim |
| author_sort | Dong Hee Kim |
| collection | DOAJ |
| description | Age-related macular degeneration (AMD) is a major cause of irreversible loss of vision with 80–90% of patients demonstrating dry type AMD. Dry AMD could possibly be prevented by polyphenol-rich medicinal foods by the inhibition of N-retinylidene-N-retinylethanolamine (A2E)-induced oxidative stress and cell damage. <em>Arctium lappa</em> L. (AL) leaves are medicinal and have antioxidant activity. The purpose of this study was to elucidate the protective effects of the extract of AL leaves (ALE) on dry AMD models, including in vitro A2E-induced damage in ARPE-19 cells, a human retinal pigment epithelial cell line, and in vivo light-induced retinal damage in BALB/c mice. According to the total phenolic contents (TPCs), total flavonoid contents (TFCs) and antioxidant activities, ALE was rich in polyphenols and had antioxidant efficacies on 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), ferric reducing antioxidant power (FRAP), and 2′,7′-dichlorofluorescin diacetate (DCFDA) assays. The effects of ALE on A2E accumulation and A2E-induced cell death were also monitored. Despite continued exposure to A2E (10 μM), ALE attenuated A2E accumulation in APRE-19 cells with levels similar to lutein. A2E-induced cell death at high concentration (25 μM) was also suppressed by ALE by inhibiting the apoptotic signaling pathway. Furthermore, ALE could protect the outer nuclear layer (ONL) in the retina from light-induced AMD in BALB/c mice. In conclusion, ALE could be considered a potentially valuable medicinal food for dry AMD. |
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| series | Molecules |
| spelling | doaj.art-ff776ed2fc4349f1b495c88dc34267a42023-11-19T21:09:15ZengMDPI AGMolecules1420-30492020-04-01257173710.3390/molecules25071737Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and MiceDong Hee Kim0Yae Rim Choi1Jaewon Shim2Yun-Sang Choi3Yun Tai Kim4Mina Kyungmin Kim5Min Jung Kim6Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, KoreaResearch Division of Food Functionality, Korea Food Research Institute, Wanju 55365, KoreaResearch Division of Food Functionality, Korea Food Research Institute, Wanju 55365, KoreaResearch Division of Strategic Food Technology, Korea Food Research Institute, Wanju 55365, KoreaResearch Division of Food Functionality, Korea Food Research Institute, Wanju 55365, KoreaDepartment of Food Science and Human Nutrition, Jeonbuk National University, Jeonju-si 54896, KoreaResearch Division of Food Functionality, Korea Food Research Institute, Wanju 55365, KoreaAge-related macular degeneration (AMD) is a major cause of irreversible loss of vision with 80–90% of patients demonstrating dry type AMD. Dry AMD could possibly be prevented by polyphenol-rich medicinal foods by the inhibition of N-retinylidene-N-retinylethanolamine (A2E)-induced oxidative stress and cell damage. <em>Arctium lappa</em> L. (AL) leaves are medicinal and have antioxidant activity. The purpose of this study was to elucidate the protective effects of the extract of AL leaves (ALE) on dry AMD models, including in vitro A2E-induced damage in ARPE-19 cells, a human retinal pigment epithelial cell line, and in vivo light-induced retinal damage in BALB/c mice. According to the total phenolic contents (TPCs), total flavonoid contents (TFCs) and antioxidant activities, ALE was rich in polyphenols and had antioxidant efficacies on 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), ferric reducing antioxidant power (FRAP), and 2′,7′-dichlorofluorescin diacetate (DCFDA) assays. The effects of ALE on A2E accumulation and A2E-induced cell death were also monitored. Despite continued exposure to A2E (10 μM), ALE attenuated A2E accumulation in APRE-19 cells with levels similar to lutein. A2E-induced cell death at high concentration (25 μM) was also suppressed by ALE by inhibiting the apoptotic signaling pathway. Furthermore, ALE could protect the outer nuclear layer (ONL) in the retina from light-induced AMD in BALB/c mice. In conclusion, ALE could be considered a potentially valuable medicinal food for dry AMD.https://www.mdpi.com/1420-3049/25/7/1737<i>Arctium lappa L.</i> leavesage-related macular degenerationA2E accumulationA2E-induced cell deathapoptosis |
| spellingShingle | Dong Hee Kim Yae Rim Choi Jaewon Shim Yun-Sang Choi Yun Tai Kim Mina Kyungmin Kim Min Jung Kim Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice Molecules <i>Arctium lappa L.</i> leaves age-related macular degeneration A2E accumulation A2E-induced cell death apoptosis |
| title | Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice |
| title_full | Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice |
| title_fullStr | Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice |
| title_full_unstemmed | Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice |
| title_short | Suppressive Effect of <em>Arctium Lappa</em> L. Leaves on Retinal Damage Against A2E-Induced ARPE-19 Cells and Mice |
| title_sort | suppressive effect of em arctium lappa em l leaves on retinal damage against a2e induced arpe 19 cells and mice |
| topic | <i>Arctium lappa L.</i> leaves age-related macular degeneration A2E accumulation A2E-induced cell death apoptosis |
| url | https://www.mdpi.com/1420-3049/25/7/1737 |
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