Evidence map›Paper›PMID 22496810›Full record

ArticlePloS one2012

Investigation of mitochondrial dysfunction by sequential microplate-based respiration measurements from intact and permeabilized neurons.

Pascaline Clerc, Brian M Polster

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

37 citing papers in PubMed, 59 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

2 authors at 1 institution in 1 country.

Pascaline ClercDepartment of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, United States of America.
Brian M Polster
University of Maryland, Baltimore · US

Funding

SPECTRIN-DEPENDENT MEMBRANE DOMAINS IN THE DEVELOPING CNSP01HD016596 · NICHD · UNIVERSITY OF MARYLAND BALTIMORE · PI MCKENNA, MARY C · 1985 to 2013
$12.8M
Proteolytic Fragments and Mitochondrial Dysfunction in TBIR01NS064978 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI POLSTER, BRIAN M · 2009 to 2012
$1.0M
NICHD NIH HHS P01 HD016596NICHD NIH HHS P01HD016596NINDS NIH HHS R01 NS064978NINDS NIH HHS R01NS064978
6 · The paper itself

Abstract

Mitochondrial dysfunction is a component of many neurodegenerative conditions. Measurement of oxygen consumption from intact neurons enables evaluation of mitochondrial bioenergetics under conditions that are more physiologically realistic compared to isolated mitochondria. However, mechanistic analysis of mitochondrial function in cells is complicated by changing energy demands and lack of substrate control. Here we describe a technique for sequentially measuring respiration from intact and saponin-permeabilized cortical neurons on single microplates. This technique allows control of substrates to individual electron transport chain complexes following permeabilization, as well as side-by-side comparisons to intact cells. To illustrate the utility of the technique, we demonstrate that inhibition of respiration by the drug KB-R7943 in intact neurons is relieved by delivery of the complex II substrate succinate, but not by complex I substrates, via acute saponin permeabilization. In contrast, methyl succinate, a putative cell permeable complex II substrate, failed to rescue respiration in intact neurons and was a poor complex II substrate in permeabilized cells. Sequential measurements of intact and permeabilized cell respiration should be particularly useful for evaluating indirect mitochondrial toxicity due to drugs or cellular signaling events which cannot be readily studied using isolated mitochondria.

Indexed as

Energy MetabolismAnimalsAnti-Arrhythmia AgentsCell Membrane PermeabilityCell RespirationElectron TransportElectron Transport Complex IEmbryo, MammalianMicrotechnologyMitochondriaNeuronsOxidation-ReductionOxygen ConsumptionRatsSaponinsSignal Transduction2-(2-(4-(4-nitrobenzyloxy)phenyl)ethyl)isothiourea methanesulfonateAnti-Arrhythmia AgentsElectron Transport Complex ISaponinsSuccinic AcidThiourea

Identifiers

PMID22496810
PMCPMC3319583
OpenAlexW2054018067

What OpenQuestion holds

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LicenceCC BY
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.