Evidence map›Paper›PMID 17955552›Full record

ArticleGlia2008

Microglia induce neurotoxicity via intraneuronal Zn(2+) release and a K(+) current surge.

Megan E Knoch, Karen A Hartnett, Hirokazu Hara, Karl Kandler, Elias Aizenman

Open access · greenAbstract read
In one paragraph

Article in Glia, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.2field-weighted citation impact, top 9% 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

33 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Voltage-Gated Potassium Channels as Regulators of Cell Death.Frontiers in cell and developmental biology · 2020
    Review
  10. Article
  11. Article
  12. Microglial priming in Alzheimer's disease.Annals of translational medicine · 2018
    Review
  13. Disruption of KNeuroscience · 2017
    Article
  14. Targeting a Potassium Channel/Syntaxin Interaction Ameliorates Cell Death in Ischemic Stroke.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Review
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 2 institutions in 2 countries.

Megan E KnochDepartment of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA.
Karen A Hartnett
Hirokazu Hara
Karl Kandler
Elias Aizenman
University of Pittsburgh · USGifu Pharmaceutical University · JP

Funding

Development of Neuronal Circuits In The Auditory SystemsR01DC004199 · NIDCD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KANDLER, KARL · 1999 to 2020
$8.5M
Liberation of Intracellular Zinc and Neuronal Cell DeathR01NS043277 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AIZENMAN, ELIAS · 2002 to 2022
$8.2M
Liberation of Intracellular Zinc and Neuronal Cell DeathR56NS043277 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AIZENMAN, ELIAS · 2007 to 2007
$371k
NIDCD NIH HHS DC004199NIDCD NIH HHS R01 DC004199NINDS NIH HHS NS043277NINDS NIH HHS R01 NS043277NINDS NIH HHS R56 NS043277
6 · The paper itself

Abstract

Microglial cells are critical components of the injurious cascade in a large number of neurodegenerative diseases. However, the precise molecular mechanisms by which microglia mediate neuronal cell death have not been fully delineated. We report here that reactive species released from activated microglia induce the liberation of Zn(2+) from intracellular stores in cultured cortical neurons, with a subsequent enhancement in neuronal voltage-gated K(+) currents, two events that have been intimately linked to apoptosis. Both the intraneuronal Zn(2+) release and the K(+) current surge could be prevented by the NADPH oxidase inhibitor apocynin, the free radical scavenging mixture of superoxide dismutase and catalase, as well as by 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrinato iron(III) chloride. The enhancement of K(+) currents was prevented by neuronal overexpression of metallothionein III or by expression of a dominant negative (DN) vector for the upstream mitogen-activated protein kinase apoptosis signal regulating kinase-1 (ASK-1). Importantly, neurons overexpressing metallothionein-III or transfected with DN vectors for ASK-1 or Kv2.1-encoded K(+) channels were resistant to microglial-induced toxicity. These results establish a direct link between microglial-generated oxygen and nitrogen reactive products and neuronal cell death mediated by intracellular Zn(2+) release and a surge in K(+) currents.

Indexed as

AnimalsCell DeathCerebral CortexCoculture TechniquesElectrophysiologyFemaleImmunohistochemistryIon Channel GatingIon ChannelsLuciferasesMAP Kinase Kinase Kinase 5MicrogliaNeurodegenerative DiseasesNeuronsPotassium ChannelsPregnancyIon ChannelsKcnb1 protein, ratLuciferasesMAP Kinase Kinase Kinase 5Potassium ChannelsShab Potassium ChannelsZinc

Identifiers

PMID17955552
PMCPMC2561170
OpenAlexW2036447879

What OpenQuestion holds

Textmetadata
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.