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Zhang HJ, Liu XB, Chen XM, Kong QH, Liu YS, So KF, Chen JS, Xu Y, Mi XS, Tang SB. Lutein delays photoreceptor degeneration in a mouse model of retinitis pigmentosa. Neural Regen Res 2021; 17:1596-1603. [PMID: 34916446 PMCID: PMC8771084 DOI: 10.4103/1673-5374.330622] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Retinitis pigmentosa is a retinal disease characterized by photoreceptor degeneration. There is currently no effective treatment for retinitis pigmentosa. Although a mixture of lutein and other antioxidant agents has shown promising effects in protecting the retina from degeneration, the role of lutein alone remains unclear. In this study, we administered intragastric lutein to Pde6brd10 model mice, which display degeneration of retinal photoreceptors, on postnatal days 17 (P17) to P25, when rod apoptosis reaches peak. Lutein at the optimal protective dose of 200 mg/kg promoted the survival of photoreceptors compared with vehicle control. Lutein increased rhodopsin expression in rod cells and opsin expression in cone cells, in line with an increased survival rate of photoreceptors. Functionally, lutein improved visual behavior, visual acuity, and retinal electroretinogram responses in Pde6brd10 mice. Mechanistically, lutein reduced the expression of glial fibrillary acidic protein in Müller glial cells. The results of this study confirm the ability of lutein to postpone photoreceptor degeneration by reducing reactive gliosis of Müller cells in the retina and exerting anti-inflammatory effects. This study was approved by the Laboratory Animal Ethics Committee of Jinan University (approval No. LACUC-20181217-02) on December 17, 2018.
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Affiliation(s)
- Hui-Jun Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University; Department of Ophthalmology, Guangzhou Panyu Central Hospital, Guangzhou, Guangdong Province, China
| | - Xiao-Bin Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
| | - Xiong-Min Chen
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
| | - Qi-Hang Kong
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Yu-Sang Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
| | - Kwok-Fai So
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province; Aier Academician Station, Changsha, Hunan Province; Key Laboratory of CNS Regeneration (Jinan University), Ministry of Education, Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Jian-Su Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province; Laboratory of Retinal Cell Biology, Aier Eye Institute; Aier Academician Station, Changsha, Hunan Province, China
| | - Ying Xu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province; Aier Academician Station, Changsha, Hunan Province; Key Laboratory of CNS Regeneration (Jinan University), Ministry of Education, Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Xue-Song Mi
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province; Aier Academician Station, Changsha, Hunan Province, China
| | - Shi-Bo Tang
- Laboratory of Retinal Cell Biology, Aier Eye Institute; Aier Academician Station, Changsha, Hunan Province, China
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