Gypenosides protect retinal pigment epithelium cells from oxidative stress

Reem Hasaballah Alhasani, Lincoln Biswas, Ali Mohammad Tohari, Xinzhi Zhou, James Reilly, Jian-Feng He, Xinhua Shu

Research output: Contribution to journalArticle

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Abstract

Oxidative stress plays a critical role in the pathogenesis of retinal degeneration. Gypenosides are the major functional components isolated from Gynostemma pentaphyllum. They have been shown to protect against oxidative stress and inflammation and have also demonstrated a protective effect on experimental optic neuritis. In order to determine the protective properties of gypenosides against oxidative stress in human retinal pigment epithelium (RPE) cells, ARPE-19¿cells were treated with H2O2 or H2O2 plus gypenosides for 24¿h. ARPE-19¿cells co-treated with gypenosides had significantly increased cell viability and decreased cell death rate when compared to cells treated with H2O2 alone. The level of GSH, the activities of SOD and catalase, and the expression of NRF2 and antioxidant genes were notably decreased, while there were marked increases in ROS, MDA and pro-inflammatory cytokines in ARPE-19¿cells exposed to H2O2; co-treatment with gypenosides significantly counteract these changes. Our study suggests that gypenosides protect RPE cells from oxidative damage and offer therapeutic potential for the treatment of retinal degeneration.
Original languageEnglish
Pages (from-to)76–85
JournalFood and Chemical Toxicology
Volume112
Early online date21 Dec 2017
DOIs
Publication statusPublished - Feb 2018

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Oxidative stress
Retinal Pigments
Retinal Pigment Epithelium
Oxidative Stress
oxidative stress
epithelium
pigments
Gynostemma pentaphyllum
Retinal Degeneration
cells
optics
cell viability
protective effect
cell death
Gynostemma
catalase
superoxide dismutase
cytokines
pathogenesis
inflammation

Keywords

  • ARPE-19; cell death; Gypenosides; inflammation; oxidative stress

Cite this

Alhasani, Reem Hasaballah ; Biswas, Lincoln ; Tohari, Ali Mohammad ; Zhou, Xinzhi ; Reilly, James ; He, Jian-Feng ; Shu, Xinhua. / Gypenosides protect retinal pigment epithelium cells from oxidative stress. In: Food and Chemical Toxicology. 2018 ; Vol. 112. pp. 76–85.
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abstract = "Oxidative stress plays a critical role in the pathogenesis of retinal degeneration. Gypenosides are the major functional components isolated from Gynostemma pentaphyllum. They have been shown to protect against oxidative stress and inflammation and have also demonstrated a protective effect on experimental optic neuritis. In order to determine the protective properties of gypenosides against oxidative stress in human retinal pigment epithelium (RPE) cells, ARPE-19¿cells were treated with H2O2 or H2O2 plus gypenosides for 24¿h. ARPE-19¿cells co-treated with gypenosides had significantly increased cell viability and decreased cell death rate when compared to cells treated with H2O2 alone. The level of GSH, the activities of SOD and catalase, and the expression of NRF2 and antioxidant genes were notably decreased, while there were marked increases in ROS, MDA and pro-inflammatory cytokines in ARPE-19¿cells exposed to H2O2; co-treatment with gypenosides significantly counteract these changes. Our study suggests that gypenosides protect RPE cells from oxidative damage and offer therapeutic potential for the treatment of retinal degeneration.",
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Gypenosides protect retinal pigment epithelium cells from oxidative stress. / Alhasani, Reem Hasaballah; Biswas, Lincoln; Tohari, Ali Mohammad; Zhou, Xinzhi; Reilly, James; He, Jian-Feng; Shu, Xinhua.

In: Food and Chemical Toxicology, Vol. 112, 02.2018, p. 76–85.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Gypenosides protect retinal pigment epithelium cells from oxidative stress

AU - Alhasani, Reem Hasaballah

AU - Biswas, Lincoln

AU - Tohari, Ali Mohammad

AU - Zhou, Xinzhi

AU - Reilly, James

AU - He, Jian-Feng

AU - Shu, Xinhua

N1 - Acceptance in SAN AAM: 12m embargo

PY - 2018/2

Y1 - 2018/2

N2 - Oxidative stress plays a critical role in the pathogenesis of retinal degeneration. Gypenosides are the major functional components isolated from Gynostemma pentaphyllum. They have been shown to protect against oxidative stress and inflammation and have also demonstrated a protective effect on experimental optic neuritis. In order to determine the protective properties of gypenosides against oxidative stress in human retinal pigment epithelium (RPE) cells, ARPE-19¿cells were treated with H2O2 or H2O2 plus gypenosides for 24¿h. ARPE-19¿cells co-treated with gypenosides had significantly increased cell viability and decreased cell death rate when compared to cells treated with H2O2 alone. The level of GSH, the activities of SOD and catalase, and the expression of NRF2 and antioxidant genes were notably decreased, while there were marked increases in ROS, MDA and pro-inflammatory cytokines in ARPE-19¿cells exposed to H2O2; co-treatment with gypenosides significantly counteract these changes. Our study suggests that gypenosides protect RPE cells from oxidative damage and offer therapeutic potential for the treatment of retinal degeneration.

AB - Oxidative stress plays a critical role in the pathogenesis of retinal degeneration. Gypenosides are the major functional components isolated from Gynostemma pentaphyllum. They have been shown to protect against oxidative stress and inflammation and have also demonstrated a protective effect on experimental optic neuritis. In order to determine the protective properties of gypenosides against oxidative stress in human retinal pigment epithelium (RPE) cells, ARPE-19¿cells were treated with H2O2 or H2O2 plus gypenosides for 24¿h. ARPE-19¿cells co-treated with gypenosides had significantly increased cell viability and decreased cell death rate when compared to cells treated with H2O2 alone. The level of GSH, the activities of SOD and catalase, and the expression of NRF2 and antioxidant genes were notably decreased, while there were marked increases in ROS, MDA and pro-inflammatory cytokines in ARPE-19¿cells exposed to H2O2; co-treatment with gypenosides significantly counteract these changes. Our study suggests that gypenosides protect RPE cells from oxidative damage and offer therapeutic potential for the treatment of retinal degeneration.

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