Syringaresinol Alleviates Early Diabetic Retinopathy by Downregulating HIF‐1α/VEGF via Activating Nrf2 Antioxidant Pathway

Scope Early diabetic retinopathy (DR) is characterized by chronic inflammation, excessive oxidative stress, and retinal microvascular damage. Syringaresinol (SYR), as a natural polyphenolic compound, has been proved to inhibit many disease progression due to its antiinflammatory and antioxidant prop...

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Veröffentlicht in:Molecular nutrition & food research 2024-02, Vol.68 (4), p.e2200771-n/a
Hauptverfasser: Liu, Chang, Cheng, Tianwei, Wang, Yufei, Li, Guangru, Wang, Yachen, Tian, Wencong, Feng, Lifeng, Zhang, Shengzheng, Xu, Yang, Gao, Yang, Li, Jing, Liu, Jie, Cui, Jianlin, Yan, Jie, Cao, Lei, Pan, Zhongjie, Qi, Zhi, Yang, Liang
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container_issue 4
container_start_page e2200771
container_title Molecular nutrition & food research
container_volume 68
creator Liu, Chang
Cheng, Tianwei
Wang, Yufei
Li, Guangru
Wang, Yachen
Tian, Wencong
Feng, Lifeng
Zhang, Shengzheng
Xu, Yang
Gao, Yang
Li, Jing
Liu, Jie
Cui, Jianlin
Yan, Jie
Cao, Lei
Pan, Zhongjie
Qi, Zhi
Yang, Liang
description Scope Early diabetic retinopathy (DR) is characterized by chronic inflammation, excessive oxidative stress, and retinal microvascular damage. Syringaresinol (SYR), as a natural polyphenolic compound, has been proved to inhibit many disease progression due to its antiinflammatory and antioxidant properties. The present study focuses on exploring the effect of SYR on hyperglycemia‐induced early DR as well as the underlying mechanisms. Methods and results Wild‐type (WT) and nuclear factor erythroid 2‐related factor 2 (Nrf2)‐knockout C57BL/6 mice of type 1 diabetes and high glucose (HG)‐induced RF/6A cells are used as in vivo and in vitro models, respectively. This study finds that SYR protects the retinal structure and function in diabetic mice and reduces the permeability and apoptosis of HG‐treated RF/6A cells. Meanwhile, SYR distinctly mitigates inflammation and oxidative stress in vivo and vitro. The retinal microvascular damages are suppressed by SYR via downregulating hypoxia‐inducible factor‐1α (HIF‐1α)/vascular endothelial growth factor (VEGF) pathway. Whereas, SYR‐provided protective effects are diminished in Nrf2‐knockout mice, indicating that SYR improves DR progression by activating Nrf2. Similarly, SYR cannot exert protective effects against HG‐induced oxidative stress and endothelial injury in small interfering RNA (siRNA)‐Nrf2‐transfected RF/6A cells. Conclusion In summary, SYR suppresses oxidative stress via activating Nrf2 antioxidant pathway, which ameliorates retinal microvascular damage by downregulating HIF‐1α/VEGF, thereby alleviating early DR progression. Schematic diagram of the protective effect of syringaresinol (SYR) against retinal microvascular damage of DR in a manner dependent on Nrf2 antioxidant pathway activation. SYR suppresses oxidative stress via activating Nrf2/HO‐1/SOD2 pathway, which ameliorates retinal vascular damage by downregulating HIF‐1α/VEGF pathway, ultimately alleviating DR progression. In addition, SYR controls gliosis and inhibits neuronal apoptosis induced by hyperglycemia.
doi_str_mv 10.1002/mnfr.202200771
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Syringaresinol (SYR), as a natural polyphenolic compound, has been proved to inhibit many disease progression due to its antiinflammatory and antioxidant properties. The present study focuses on exploring the effect of SYR on hyperglycemia‐induced early DR as well as the underlying mechanisms. Methods and results Wild‐type (WT) and nuclear factor erythroid 2‐related factor 2 (Nrf2)‐knockout C57BL/6 mice of type 1 diabetes and high glucose (HG)‐induced RF/6A cells are used as in vivo and in vitro models, respectively. This study finds that SYR protects the retinal structure and function in diabetic mice and reduces the permeability and apoptosis of HG‐treated RF/6A cells. Meanwhile, SYR distinctly mitigates inflammation and oxidative stress in vivo and vitro. The retinal microvascular damages are suppressed by SYR via downregulating hypoxia‐inducible factor‐1α (HIF‐1α)/vascular endothelial growth factor (VEGF) pathway. Whereas, SYR‐provided protective effects are diminished in Nrf2‐knockout mice, indicating that SYR improves DR progression by activating Nrf2. Similarly, SYR cannot exert protective effects against HG‐induced oxidative stress and endothelial injury in small interfering RNA (siRNA)‐Nrf2‐transfected RF/6A cells. Conclusion In summary, SYR suppresses oxidative stress via activating Nrf2 antioxidant pathway, which ameliorates retinal microvascular damage by downregulating HIF‐1α/VEGF, thereby alleviating early DR progression. Schematic diagram of the protective effect of syringaresinol (SYR) against retinal microvascular damage of DR in a manner dependent on Nrf2 antioxidant pathway activation. SYR suppresses oxidative stress via activating Nrf2/HO‐1/SOD2 pathway, which ameliorates retinal vascular damage by downregulating HIF‐1α/VEGF pathway, ultimately alleviating DR progression. In addition, SYR controls gliosis and inhibits neuronal apoptosis induced by hyperglycemia.</description><identifier>ISSN: 1613-4125</identifier><identifier>EISSN: 1613-4133</identifier><identifier>DOI: 10.1002/mnfr.202200771</identifier><identifier>PMID: 38356045</identifier><language>eng</language><publisher>Germany: Wiley Subscription Services, Inc</publisher><subject>Antioxidants ; Apoptosis ; Damage ; Diabetes ; diabetes mellitus ; Diabetes mellitus (insulin dependent) ; Diabetic retinopathy ; Growth factors ; Hyperglycemia ; Hypoxia ; In vivo methods and tests ; Inflammation ; Microvasculature ; NRF2 protein ; Oxidative stress ; Permeability ; Retina ; retinal microvascular damage ; Retinopathy ; siRNA ; Structure-function relationships ; SYR ; Vascular endothelial growth factor</subject><ispartof>Molecular nutrition &amp; food research, 2024-02, Vol.68 (4), p.e2200771-n/a</ispartof><rights>2024 Wiley‐VCH GmbH</rights><rights>2024 Wiley-VCH GmbH.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3688-3fe3c2ec0acad35b6e85bf1a1b037fe15a1e34cea76b900b06a3243a429117fd3</citedby><cites>FETCH-LOGICAL-c3688-3fe3c2ec0acad35b6e85bf1a1b037fe15a1e34cea76b900b06a3243a429117fd3</cites><orcidid>0000-0002-1032-8603</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmnfr.202200771$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmnfr.202200771$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38356045$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Chang</creatorcontrib><creatorcontrib>Cheng, Tianwei</creatorcontrib><creatorcontrib>Wang, Yufei</creatorcontrib><creatorcontrib>Li, Guangru</creatorcontrib><creatorcontrib>Wang, Yachen</creatorcontrib><creatorcontrib>Tian, Wencong</creatorcontrib><creatorcontrib>Feng, Lifeng</creatorcontrib><creatorcontrib>Zhang, Shengzheng</creatorcontrib><creatorcontrib>Xu, Yang</creatorcontrib><creatorcontrib>Gao, Yang</creatorcontrib><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Liu, Jie</creatorcontrib><creatorcontrib>Cui, Jianlin</creatorcontrib><creatorcontrib>Yan, Jie</creatorcontrib><creatorcontrib>Cao, Lei</creatorcontrib><creatorcontrib>Pan, Zhongjie</creatorcontrib><creatorcontrib>Qi, Zhi</creatorcontrib><creatorcontrib>Yang, Liang</creatorcontrib><title>Syringaresinol Alleviates Early Diabetic Retinopathy by Downregulating HIF‐1α/VEGF via Activating Nrf2 Antioxidant Pathway</title><title>Molecular nutrition &amp; food research</title><addtitle>Mol Nutr Food Res</addtitle><description>Scope Early diabetic retinopathy (DR) is characterized by chronic inflammation, excessive oxidative stress, and retinal microvascular damage. Syringaresinol (SYR), as a natural polyphenolic compound, has been proved to inhibit many disease progression due to its antiinflammatory and antioxidant properties. The present study focuses on exploring the effect of SYR on hyperglycemia‐induced early DR as well as the underlying mechanisms. Methods and results Wild‐type (WT) and nuclear factor erythroid 2‐related factor 2 (Nrf2)‐knockout C57BL/6 mice of type 1 diabetes and high glucose (HG)‐induced RF/6A cells are used as in vivo and in vitro models, respectively. This study finds that SYR protects the retinal structure and function in diabetic mice and reduces the permeability and apoptosis of HG‐treated RF/6A cells. Meanwhile, SYR distinctly mitigates inflammation and oxidative stress in vivo and vitro. The retinal microvascular damages are suppressed by SYR via downregulating hypoxia‐inducible factor‐1α (HIF‐1α)/vascular endothelial growth factor (VEGF) pathway. Whereas, SYR‐provided protective effects are diminished in Nrf2‐knockout mice, indicating that SYR improves DR progression by activating Nrf2. Similarly, SYR cannot exert protective effects against HG‐induced oxidative stress and endothelial injury in small interfering RNA (siRNA)‐Nrf2‐transfected RF/6A cells. Conclusion In summary, SYR suppresses oxidative stress via activating Nrf2 antioxidant pathway, which ameliorates retinal microvascular damage by downregulating HIF‐1α/VEGF, thereby alleviating early DR progression. Schematic diagram of the protective effect of syringaresinol (SYR) against retinal microvascular damage of DR in a manner dependent on Nrf2 antioxidant pathway activation. SYR suppresses oxidative stress via activating Nrf2/HO‐1/SOD2 pathway, which ameliorates retinal vascular damage by downregulating HIF‐1α/VEGF pathway, ultimately alleviating DR progression. In addition, SYR controls gliosis and inhibits neuronal apoptosis induced by hyperglycemia.</description><subject>Antioxidants</subject><subject>Apoptosis</subject><subject>Damage</subject><subject>Diabetes</subject><subject>diabetes mellitus</subject><subject>Diabetes mellitus (insulin dependent)</subject><subject>Diabetic retinopathy</subject><subject>Growth factors</subject><subject>Hyperglycemia</subject><subject>Hypoxia</subject><subject>In vivo methods and tests</subject><subject>Inflammation</subject><subject>Microvasculature</subject><subject>NRF2 protein</subject><subject>Oxidative stress</subject><subject>Permeability</subject><subject>Retina</subject><subject>retinal microvascular damage</subject><subject>Retinopathy</subject><subject>siRNA</subject><subject>Structure-function relationships</subject><subject>SYR</subject><subject>Vascular endothelial growth factor</subject><issn>1613-4125</issn><issn>1613-4133</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkc9OGzEQh60KVCjl2mNliUsvCR57_-UY0QSQgFYUuK5mndnUyPGm9i7pHir1EfoqvAgP0Sepo9AcuHDxWDOfP431Y-wDiCEIIY8XrvZDKaQUIs_hDduHDNQgAaV2tneZ7rF3IdwLoUAm6i3bU4VKM5Gk--zXt94bN0dPwbjG8rG19GCwpcAn6G3PPxusqDWaX8fTNUtsv_e8iv1m5TzNO4uxPedn59O_v__A0-Px3eR0yqOCj3VrHjbTK19LPnataX6aGbqWf42aFfbv2W6NNtDhcz1gt9PJzcnZ4OLL6fnJ-GKgVVYUA1WT0pK0QI0zlVYZFWlVA0IlVF4TpAikEk2YZ9VIiEpkqOJHMZEjgLyeqQP2aeNd-uZHR6EtFyZoshYdNV0o5UjmEqBI0ogevUDvm867uF2klCxyAdmaGm4o7ZsQPNXl0psF-r4EUa6DKdfBlNtg4oOPz9quWtBsi_9PIgLJBlgZS_0ruvLyanqdZHmh_gFQ_pui</recordid><startdate>202402</startdate><enddate>202402</enddate><creator>Liu, Chang</creator><creator>Cheng, Tianwei</creator><creator>Wang, Yufei</creator><creator>Li, Guangru</creator><creator>Wang, Yachen</creator><creator>Tian, Wencong</creator><creator>Feng, Lifeng</creator><creator>Zhang, Shengzheng</creator><creator>Xu, Yang</creator><creator>Gao, Yang</creator><creator>Li, Jing</creator><creator>Liu, Jie</creator><creator>Cui, Jianlin</creator><creator>Yan, Jie</creator><creator>Cao, Lei</creator><creator>Pan, Zhongjie</creator><creator>Qi, Zhi</creator><creator>Yang, Liang</creator><general>Wiley Subscription Services, Inc</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7QP</scope><scope>7T5</scope><scope>7T7</scope><scope>7TK</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-1032-8603</orcidid></search><sort><creationdate>202402</creationdate><title>Syringaresinol Alleviates Early Diabetic Retinopathy by Downregulating HIF‐1α/VEGF via Activating Nrf2 Antioxidant Pathway</title><author>Liu, Chang ; Cheng, Tianwei ; Wang, Yufei ; Li, Guangru ; Wang, Yachen ; Tian, Wencong ; Feng, Lifeng ; Zhang, Shengzheng ; Xu, Yang ; Gao, Yang ; Li, Jing ; Liu, Jie ; Cui, Jianlin ; Yan, Jie ; Cao, Lei ; Pan, Zhongjie ; Qi, Zhi ; Yang, Liang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3688-3fe3c2ec0acad35b6e85bf1a1b037fe15a1e34cea76b900b06a3243a429117fd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Antioxidants</topic><topic>Apoptosis</topic><topic>Damage</topic><topic>Diabetes</topic><topic>diabetes mellitus</topic><topic>Diabetes mellitus (insulin dependent)</topic><topic>Diabetic retinopathy</topic><topic>Growth factors</topic><topic>Hyperglycemia</topic><topic>Hypoxia</topic><topic>In vivo methods and tests</topic><topic>Inflammation</topic><topic>Microvasculature</topic><topic>NRF2 protein</topic><topic>Oxidative stress</topic><topic>Permeability</topic><topic>Retina</topic><topic>retinal microvascular damage</topic><topic>Retinopathy</topic><topic>siRNA</topic><topic>Structure-function relationships</topic><topic>SYR</topic><topic>Vascular endothelial growth factor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Chang</creatorcontrib><creatorcontrib>Cheng, Tianwei</creatorcontrib><creatorcontrib>Wang, Yufei</creatorcontrib><creatorcontrib>Li, Guangru</creatorcontrib><creatorcontrib>Wang, Yachen</creatorcontrib><creatorcontrib>Tian, Wencong</creatorcontrib><creatorcontrib>Feng, Lifeng</creatorcontrib><creatorcontrib>Zhang, Shengzheng</creatorcontrib><creatorcontrib>Xu, Yang</creatorcontrib><creatorcontrib>Gao, Yang</creatorcontrib><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Liu, Jie</creatorcontrib><creatorcontrib>Cui, Jianlin</creatorcontrib><creatorcontrib>Yan, Jie</creatorcontrib><creatorcontrib>Cao, Lei</creatorcontrib><creatorcontrib>Pan, Zhongjie</creatorcontrib><creatorcontrib>Qi, Zhi</creatorcontrib><creatorcontrib>Yang, Liang</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Calcium &amp; Calcified Tissue Abstracts</collection><collection>Immunology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Neurosciences Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Molecular nutrition &amp; food research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Chang</au><au>Cheng, Tianwei</au><au>Wang, Yufei</au><au>Li, Guangru</au><au>Wang, Yachen</au><au>Tian, Wencong</au><au>Feng, Lifeng</au><au>Zhang, Shengzheng</au><au>Xu, Yang</au><au>Gao, Yang</au><au>Li, Jing</au><au>Liu, Jie</au><au>Cui, Jianlin</au><au>Yan, Jie</au><au>Cao, Lei</au><au>Pan, Zhongjie</au><au>Qi, Zhi</au><au>Yang, Liang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Syringaresinol Alleviates Early Diabetic Retinopathy by Downregulating HIF‐1α/VEGF via Activating Nrf2 Antioxidant Pathway</atitle><jtitle>Molecular nutrition &amp; food research</jtitle><addtitle>Mol Nutr Food Res</addtitle><date>2024-02</date><risdate>2024</risdate><volume>68</volume><issue>4</issue><spage>e2200771</spage><epage>n/a</epage><pages>e2200771-n/a</pages><issn>1613-4125</issn><eissn>1613-4133</eissn><abstract>Scope Early diabetic retinopathy (DR) is characterized by chronic inflammation, excessive oxidative stress, and retinal microvascular damage. Syringaresinol (SYR), as a natural polyphenolic compound, has been proved to inhibit many disease progression due to its antiinflammatory and antioxidant properties. The present study focuses on exploring the effect of SYR on hyperglycemia‐induced early DR as well as the underlying mechanisms. Methods and results Wild‐type (WT) and nuclear factor erythroid 2‐related factor 2 (Nrf2)‐knockout C57BL/6 mice of type 1 diabetes and high glucose (HG)‐induced RF/6A cells are used as in vivo and in vitro models, respectively. This study finds that SYR protects the retinal structure and function in diabetic mice and reduces the permeability and apoptosis of HG‐treated RF/6A cells. Meanwhile, SYR distinctly mitigates inflammation and oxidative stress in vivo and vitro. The retinal microvascular damages are suppressed by SYR via downregulating hypoxia‐inducible factor‐1α (HIF‐1α)/vascular endothelial growth factor (VEGF) pathway. Whereas, SYR‐provided protective effects are diminished in Nrf2‐knockout mice, indicating that SYR improves DR progression by activating Nrf2. Similarly, SYR cannot exert protective effects against HG‐induced oxidative stress and endothelial injury in small interfering RNA (siRNA)‐Nrf2‐transfected RF/6A cells. Conclusion In summary, SYR suppresses oxidative stress via activating Nrf2 antioxidant pathway, which ameliorates retinal microvascular damage by downregulating HIF‐1α/VEGF, thereby alleviating early DR progression. Schematic diagram of the protective effect of syringaresinol (SYR) against retinal microvascular damage of DR in a manner dependent on Nrf2 antioxidant pathway activation. SYR suppresses oxidative stress via activating Nrf2/HO‐1/SOD2 pathway, which ameliorates retinal vascular damage by downregulating HIF‐1α/VEGF pathway, ultimately alleviating DR progression. In addition, SYR controls gliosis and inhibits neuronal apoptosis induced by hyperglycemia.</abstract><cop>Germany</cop><pub>Wiley Subscription Services, Inc</pub><pmid>38356045</pmid><doi>10.1002/mnfr.202200771</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0002-1032-8603</orcidid></addata></record>
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subjects Antioxidants
Apoptosis
Damage
Diabetes
diabetes mellitus
Diabetes mellitus (insulin dependent)
Diabetic retinopathy
Growth factors
Hyperglycemia
Hypoxia
In vivo methods and tests
Inflammation
Microvasculature
NRF2 protein
Oxidative stress
Permeability
Retina
retinal microvascular damage
Retinopathy
siRNA
Structure-function relationships
SYR
Vascular endothelial growth factor
title Syringaresinol Alleviates Early Diabetic Retinopathy by Downregulating HIF‐1α/VEGF via Activating Nrf2 Antioxidant Pathway
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