Evidence map›Paper›PMID 21767533›Full record

ArticleExperimental eye research2011

Retinal flavoprotein fluorescence correlates with mitochondrial stress, apoptosis, and chemokine expression.

Matthew G Field, Dongli Yang, Zong-Mei Bian, Howard R Petty, Victor M Elner

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.1field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 34 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Matthew G FieldDepartment of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA.
Dongli Yang
Zong-Mei Bian
Howard R Petty
Victor M Elner
University of Michigan–Ann Arbor · US

Funding

VIVARIUM MODULEP30EY007003 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI David Antonetti · 1987 to 2026
$17.6M
RPE-Mphi Binding: Ca++_&O2-_Dependent AMD ResponsesR01EY009441 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ELNER, VICTOR M · 1992 to 2008
$3.2M
Novel Immunofluorescence Methods for Retinal ResearchR21EY019986 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PETTY, HOWARD R · 2010 to 2010
$213k
E75 IN THE DEVELOPING DROSOPHILA EYEF31EY007003 · NEI · YALE UNIVERSITY · PI SHILTON, ALYCIA N · 1999 to 2001
$14k
NEI NIH HHS EY007003NEI NIH HHS EY019986NEI NIH HHS EY09441NEI NIH HHS F31 EY007003NEI NIH HHS P30 EY007003NEI NIH HHS R01 EY009441NEI NIH HHS R21 EY019986
6 · The paper itself

Abstract

Oxidative stress and mitochondrial dysfunction occur before apoptosis in many retinal diseases. Under these conditions, a larger fraction of flavoproteins become oxidized and, when excited by blue-light, emit green flavoprotein fluorescence (FPF). In this study, we evaluated the utility of FPF as an early indicator of mitochondrial stress, pre-apoptotic cellular instability, and apoptosis of human retinal pigment epithelial (HRPE) cells subjected to hydrogen peroxide (H(2)O(2)) or monocytes (unstimulated or interferon-γ-stimulated) in vitro and of freshly-isolated pieces of human and rat neural retina subjected to H(2)O(2)ex vivo. Increased FPF of HRPE cells exposed to H(2)O(2) correlated with reduced mitochondrial membrane potential (ΔΨm) and increased apoptosis in a time- and dose-dependent manner. HRPE cells co-cultured with monocytes had increased FPF that correlated in a time-dependent manner with reduced ΔΨm, increased apoptosis, and early expression of pro-inflammatory chemokines, interleukin-8 (IL8) and monocyte chemotactic factor-1 (MCP1), which are known to be induced by oxidative stress. Increased FPF, reduced ΔΨm, and upregulation of IL8 and MCP1 occurred as early as 1-2 h after exposure to stressors, while apoptosis did not occur in HRPE cells until later time points. The antioxidant, N-acetyl-cysteine (NAC), inhibited increased FPF and apoptosis of HRPE cells subjected to H(2)O(2). Increased FPF of human and rat neural retina also correlated with increased apoptosis. This study suggests that FPF is a useful measure of mitochondrial function in retinal cells and tissues and can detect early mitochondrial dysfunction that may precede apoptosis.

Indexed as

ApoptosisAnimalsChemokine CCL2ChemokinesCoculture TechniquesDose-Response Relationship, DrugEnzyme-Linked Immunosorbent AssayFlavoproteinsFluorescenceHumansHydrogen PeroxideInterferon-gammaInterleukin-8Membrane Potential, MitochondrialMitochondrial DiseasesMonocytesCCL2 protein, humanChemokine CCL2ChemokinesFlavoproteinsHydrogen PeroxideInterferon-gammaInterleukin-8

Identifiers

PMID21767533
PMCPMC3206137
OpenAlexW2042222431

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.