Evidence map›Paper›PMID 20388940›Full record

ArticleJournal of lipid research2010

Extracellular-derived calcium does not initiate in vivo neurotransmission involving docosahexaenoic acid.

Epolia Ramadan, Angelo O Rosa, Lisa Chang, Mei Chen, Stanley I Rapoport, Mireille Basselin

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.1field-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

20 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Article
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  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Translational studies on regulation of brain docosahexaenoic acid (DHA) metabolism in vivo.Prostaglandins, leukotrienes, and essential fatty acids · 2013
    Review
  11. Article
  12. Article
  13. Chronic lithium feeding reduces upregulated brain arachidonic acid metabolism in HIV-1 transgenic rat.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2012
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
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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

6 authors at 2 institutions in 1 country.

Epolia RamadanBrain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA. ramadanir@mail.nih.gov
Angelo O Rosa
Lisa Chang
Mei Chen
Stanley I Rapoport
Mireille Basselin
National Institute on Aging · USNational Institutes of Health · US

Funding

Imaging Brain Signal Transduction via Arachidonic and Docosahexaenoic AcidsZIAAG000134 · NIA · NATIONAL INSTITUTE ON AGING · PI RAPOPORT, STANLEY I. · 2009 to 2015
$3.3M
Intramural NIH HHS
6 · The paper itself

Abstract

In vitro studies show that docosahexaenoic acid (DHA) can be released from membrane phospholipid by Ca(2+)-independent phospholipase A(2) (iPLA(2)), Ca(2+)-independent plasmalogen PLA(2) or secretory PLA(2 (sPLA2)), but not by Ca(2+)-dependent cytosolic PLA(2) (cPLA2), which selectively releases arachidonic acid (AA). Since glutamatergic NMDA (N-methyl-D-aspartate) receptor activation allows extracellular Ca(2+) into cells, we hypothesized that brain DHA signaling would not be altered in rats given NMDA, to the extent that in vivo signaling was mediated by Ca(2+)-independent mechanisms. Isotonic saline, a subconvulsive dose of NMDA (25 mg/kg), MK-801, or MK-801 followed by NMDA was administered i.p. to unanesthetized rats. Radiolabeled DHA or AA was infused intravenously and their brain incorporation coefficients k*, measures of signaling, were imaged with quantitative autoradiography. NMDA or MK-801 compared with saline did not alter k* for DHA in any of 81 brain regions examined, whereas NMDA produced widespread and significant increments in k* for AA. In conclusion, in vivo brain DHA but not AA signaling via NMDA receptors is independent of extracellular Ca(2+) and of cPLA(2). DHA signaling may be mediated by iPLA(2), plasmalogen PLA(2), or other enzymes insensitive to low concentrations of Ca(2+). Greater AA than DHA release during glutamate-induced excitotoxicity could cause brain cell damage.

Indexed as

Synaptic TransmissionAnimalsArachidonic AcidArteriesAutoradiographyBrainCalciumDizocilpine MaleateDocosahexaenoic AcidsExtracellular SpaceMaleMolecular ImagingN-MethylaspartateRatsRats, Inbred F344Arachidonic AcidCalciumDizocilpine MaleateDocosahexaenoic AcidsN-Methylaspartate

Identifiers

PMID20388940
PMCPMC2903827
OpenAlexW2122523434

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.