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An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy

In retinopathy of prematurity (ROP), the abnormal retinal neovascularization is often accompanied by retinal neuronal dysfunction. Here, a rat model of oxygen‐induced retinopathy (OIR), which mimics the ROP disease, was used to investigate changes in the expression of key mediators of autophagy and...

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Autores principales: Pesce, Noemi Anna, Canovai, Alessio, Plastino, Flavia, Lardner, Emma, Kvanta, Anders, Cammalleri, Maurizio, André, Helder, Dal Monte, Massimo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8581343/
https://www.ncbi.nlm.nih.gov/pubmed/34623024
http://dx.doi.org/10.1111/jcmm.16977
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author Pesce, Noemi Anna
Canovai, Alessio
Plastino, Flavia
Lardner, Emma
Kvanta, Anders
Cammalleri, Maurizio
André, Helder
Dal Monte, Massimo
author_facet Pesce, Noemi Anna
Canovai, Alessio
Plastino, Flavia
Lardner, Emma
Kvanta, Anders
Cammalleri, Maurizio
André, Helder
Dal Monte, Massimo
author_sort Pesce, Noemi Anna
collection PubMed
description In retinopathy of prematurity (ROP), the abnormal retinal neovascularization is often accompanied by retinal neuronal dysfunction. Here, a rat model of oxygen‐induced retinopathy (OIR), which mimics the ROP disease, was used to investigate changes in the expression of key mediators of autophagy and markers of cell death in the rat retina. In addition, rats were treated from birth to postnatal day 14 and 18 with 3‐methyladenine (3‐MA), an inhibitor of autophagy. Immunoblot and immunofluorescence analysis demonstrated that autophagic mechanisms are dysregulated in the retina of OIR rats and indicated a possible correlation between autophagy and necroptosis, but not apoptosis. We found that 3‐MA acts predominantly by reducing autophagic and necroptotic markers in the OIR retinas, having no effects on apoptotic markers. However, 3‐MA does not ameliorate retinal function, which results compromised in this model. Taken together, these results revealed the crucial role of autophagy in retinal cells of OIR rats. Thus, inhibiting autophagy may be viewed as a putative strategy to counteract ROP.
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spelling pubmed-85813432021-11-17 An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy Pesce, Noemi Anna Canovai, Alessio Plastino, Flavia Lardner, Emma Kvanta, Anders Cammalleri, Maurizio André, Helder Dal Monte, Massimo J Cell Mol Med Original Articles In retinopathy of prematurity (ROP), the abnormal retinal neovascularization is often accompanied by retinal neuronal dysfunction. Here, a rat model of oxygen‐induced retinopathy (OIR), which mimics the ROP disease, was used to investigate changes in the expression of key mediators of autophagy and markers of cell death in the rat retina. In addition, rats were treated from birth to postnatal day 14 and 18 with 3‐methyladenine (3‐MA), an inhibitor of autophagy. Immunoblot and immunofluorescence analysis demonstrated that autophagic mechanisms are dysregulated in the retina of OIR rats and indicated a possible correlation between autophagy and necroptosis, but not apoptosis. We found that 3‐MA acts predominantly by reducing autophagic and necroptotic markers in the OIR retinas, having no effects on apoptotic markers. However, 3‐MA does not ameliorate retinal function, which results compromised in this model. Taken together, these results revealed the crucial role of autophagy in retinal cells of OIR rats. Thus, inhibiting autophagy may be viewed as a putative strategy to counteract ROP. John Wiley and Sons Inc. 2021-10-08 2021-11 /pmc/articles/PMC8581343/ /pubmed/34623024 http://dx.doi.org/10.1111/jcmm.16977 Text en © 2021 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Pesce, Noemi Anna
Canovai, Alessio
Plastino, Flavia
Lardner, Emma
Kvanta, Anders
Cammalleri, Maurizio
André, Helder
Dal Monte, Massimo
An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title_full An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title_fullStr An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title_full_unstemmed An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title_short An imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
title_sort imbalance in autophagy contributes to retinal damage in a rat model of oxygen‐induced retinopathy
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8581343/
https://www.ncbi.nlm.nih.gov/pubmed/34623024
http://dx.doi.org/10.1111/jcmm.16977
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