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Oxygen delivery, consumption, and conversion to reactive oxygen species in experimental models of diabetic retinopathy.

Abstract：

:Retinal tissue receives its supply of oxygen from two sources - the retinal and choroidal circulations. Decreases in retinal blood flow occur in the early stages of diabetes, with the eventual development of hypoxia thought to contribute to pathological neovascularization. Oxygen consumption in the retina has been found to decrease in diabetes, possibly due to either a reduction in neuronal metabolism or to cell death. Diabetes also enhances the rate of conversion of oxygen to superoxide in the retina, with experimental evidence suggesting that mitochondrial superoxide not only drives the overall production of reactive oxygen species, but also initiates several pathways leading to retinopathy, including the increased activity of the polyol and hexosamine pathways, increased production of advanced glycation end products and expression of their receptors, and activation of protein kinase C.

journal_name

Redox Biol

journal_title

Redox biology

authors

Eshaq RS,Wright WS,Harris NR

doi

10.1016/j.redox.2014.04.006

subject

Has Abstract

pub_date

2014-04-18 00:00:00

pages

661-6

issn

2213-2317

pii

S2213-2317(14)00059-7

journal_volume

2

pub_type

杂志文章,评审

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