Phloroglucinol protects retinal pigment epithelium and photoreceptor against all-trans -retinal-induced toxicity and inhibits A2E formation

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Phloroglucinol protects retinal pigment epithelium and photoreceptor against all‐trans‐retinal–induced toxicity and inhibits A2E formation

Among retinal macular diseases, the juvenile recessive Stargardt disease and the age-related degenerative disease arise from carbonyl and oxidative stresses (COS). Both stresses originate from an accumulation of all-trans-retinal (atRAL) and are involved in bisretinoid formation by condensation of atRAL with phosphatidylethanolamine (carbonyl stress) in the photoreceptor and its transformation ...

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The lipofuscin component A2E selectively inhibits phagolysosomal degradation of photoreceptor phospholipid by the retinal pigment epithelium.

Daily phagocytosis of spent photoreceptor outer segments is a critical maintenance function performed by the retinal pigment epithelium (RPE) to preserve vision. Aging RPE accumulates lipofuscin, which includes N-retinylidene-N-retinylethanolamine (A2E) as the major autofluorescent component. We studied the effect of physiological levels of A2E in RPE cultures on their ability to phagocytose ou...

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Involvement of endoplasmic reticulum stress in all-trans-retinal-induced retinal pigment epithelium degeneration.

Excess accumulation of endogenous all-trans-retinal (atRAL) contributes to degeneration of the retinal pigment epithelium (RPE) and photoreceptor cells, and plays a role in the etiologies of age-related macular degeneration (AMD) and Stargardt's disease. In this study, we reveal that human RPE cells tolerate exposure of up to 5 µM atRAL without deleterious effects, but higher concentrations are...

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Morphological changes in injured retinal pigment epithelium and photoreceptor cells after transplantation of stem cells into subretinal space

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ژورنال

عنوان ژورنال: Journal of Cellular and Molecular Medicine

سال: 2016

ISSN: 1582-1838

DOI: 10.1111/jcmm.12857