Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy
Background/Aims: Blue light-emitting diode light (BLL)-induced phototoxicity plays an important role in ocular diseases and causes retinal degeneration and apoptosis in human retinal pigment epithelial (RPE) cells. Cistanche tubulosa extract (CTE) is a traditional Chinese medicine with many benefici...
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| Format: | Article |
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Cell Physiol Biochem Press GmbH & Co KG
2018-11-01
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| Series: | Cellular Physiology and Biochemistry |
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| Online Access: | https://www.karger.com/Article/FullText/495162 |
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| author | Man-Ru Wu Cheng-Hui Lin Jau-Der Ho George Hsiao Yu-Wen Cheng |
| author_facet | Man-Ru Wu Cheng-Hui Lin Jau-Der Ho George Hsiao Yu-Wen Cheng |
| author_sort | Man-Ru Wu |
| collection | DOAJ |
| description | Background/Aims: Blue light-emitting diode light (BLL)-induced phototoxicity plays an important role in ocular diseases and causes retinal degeneration and apoptosis in human retinal pigment epithelial (RPE) cells. Cistanche tubulosa extract (CTE) is a traditional Chinese medicine with many beneficial protective properties; however, few studies have examined the ocular protective roles of CTE. In this study, we investigated the mechanisms underlying the effects of CTE on BLL-induced apoptosis in vitro and in vivo. Methods: RPE cells were applied in the current in vitro study and cell viability was determined by an 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Apoptosis-related protein expression was determined by western blot analysis and immunofluorescence staining. Brown Norway rats were used to examine exposure to commercially available BLL in vivo. Hematoxylin and eosin staining, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), and western blot assays were used to examine retinal morphological deformation. Results: CTE significantly inhibited hydrogen peroxide-, tert-butyl hydroperoxide-, sodium azide-, and BLL-induced RPE damage. Further, CTE reduced the expression of apoptotic markers such as cleaved caspase-3 and TUNEL staining after BLL exposure by inactivating apoptotic pathways, as shown via immunofluorescent staining. In addition, CTE inhibited the BLL-induced phosphorylation of c-Jun N-terminal kinase, extra signal-related kinases 1/2, and p38 in RPE cells. In vivo, the oral administration of CTE rescued 60-day periodic BLL exposure-induced decrements in retinal thickness and reduced the number of TUNEL-positive cells in the brown Norway rat model. Conclusion: CTE is a potential prophylactic agent against BLL-induced phototoxicity. |
| first_indexed | 2024-04-13T15:13:55Z |
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| id | doaj.art-f2ed9b776321419d9e146c5a5882a0e2 |
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| issn | 1015-8987 1421-9778 |
| language | English |
| last_indexed | 2024-04-13T15:13:55Z |
| publishDate | 2018-11-01 |
| publisher | Cell Physiol Biochem Press GmbH & Co KG |
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| series | Cellular Physiology and Biochemistry |
| spelling | doaj.art-f2ed9b776321419d9e146c5a5882a0e22022-12-22T02:41:56ZengCell Physiol Biochem Press GmbH & Co KGCellular Physiology and Biochemistry1015-89871421-97782018-11-01511637910.1159/000495162495162Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative RetinopathyMan-Ru WuCheng-Hui LinJau-Der HoGeorge HsiaoYu-Wen ChengBackground/Aims: Blue light-emitting diode light (BLL)-induced phototoxicity plays an important role in ocular diseases and causes retinal degeneration and apoptosis in human retinal pigment epithelial (RPE) cells. Cistanche tubulosa extract (CTE) is a traditional Chinese medicine with many beneficial protective properties; however, few studies have examined the ocular protective roles of CTE. In this study, we investigated the mechanisms underlying the effects of CTE on BLL-induced apoptosis in vitro and in vivo. Methods: RPE cells were applied in the current in vitro study and cell viability was determined by an 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Apoptosis-related protein expression was determined by western blot analysis and immunofluorescence staining. Brown Norway rats were used to examine exposure to commercially available BLL in vivo. Hematoxylin and eosin staining, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), and western blot assays were used to examine retinal morphological deformation. Results: CTE significantly inhibited hydrogen peroxide-, tert-butyl hydroperoxide-, sodium azide-, and BLL-induced RPE damage. Further, CTE reduced the expression of apoptotic markers such as cleaved caspase-3 and TUNEL staining after BLL exposure by inactivating apoptotic pathways, as shown via immunofluorescent staining. In addition, CTE inhibited the BLL-induced phosphorylation of c-Jun N-terminal kinase, extra signal-related kinases 1/2, and p38 in RPE cells. In vivo, the oral administration of CTE rescued 60-day periodic BLL exposure-induced decrements in retinal thickness and reduced the number of TUNEL-positive cells in the brown Norway rat model. Conclusion: CTE is a potential prophylactic agent against BLL-induced phototoxicity.https://www.karger.com/Article/FullText/495162Cistanche tubulosa extractBlue lightApoptosisRetinal pigment epithelial cells |
| spellingShingle | Man-Ru Wu Cheng-Hui Lin Jau-Der Ho George Hsiao Yu-Wen Cheng Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy Cellular Physiology and Biochemistry Cistanche tubulosa extract Blue light Apoptosis Retinal pigment epithelial cells |
| title | Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy |
| title_full | Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy |
| title_fullStr | Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy |
| title_full_unstemmed | Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy |
| title_short | Novel Protective Effects of Cistanche Tubulosa Extract Against Low-Luminance Blue Light-Induced Degenerative Retinopathy |
| title_sort | novel protective effects of cistanche tubulosa extract against low luminance blue light induced degenerative retinopathy |
| topic | Cistanche tubulosa extract Blue light Apoptosis Retinal pigment epithelial cells |
| url | https://www.karger.com/Article/FullText/495162 |
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