Evidence map›Paper›PMID 18616558›Full record

ArticleEpilepsia2009

Prolonged infusion of inhibitors of calcineurin or L-type calcium channels does not block mossy fiber sprouting in a model of temporal lobe epilepsy.

Elizabeth A Ingram, Izumi Toyoda, Xiling Wen, Paul S Buckmaster

Abstract read
In one paragraph

Article in Epilepsia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
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

4 authors.

Elizabeth A IngramDepartment of Comparative Medicine, Stanford University, Stanford, California, USA.
Izumi Toyoda
Xiling Wen
Paul S Buckmaster

Funding

Transgenic Mouse and Biobank CoreP01CA095616 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI DEPINHO, RONALD ANTHONY · 2003 to 2012
$20.3M
UC Davis/NIH NeuroMab FacilityU24NS050606 · NINDS · UNIVERSITY OF CALIFORNIA DAVIS · PI TRIMMER, JAMES S · 2005 to 2014
$15.6M
Ictogenesis in a model of temporal lobe epilepsyR01NS040276 · NINDS · STANFORD UNIVERSITY · PI BUCKMASTER, PAUL S. · 2000 to 2019
$5.8M
Research Opportunities in Comparative MedicineT35OD010989 · OD · STANFORD UNIVERSITY · PI BUCKMASTER, PAUL S. · 2012 to 2022
$565k
RESEARCH OPPORTUNITIES IN COMPARATIVE MEDICINET35RR017188 · NCRR · STANFORD UNIVERSITY · PI BUCKMASTER, PAUL S. · 2002 to 2011
$379k
NCI NIH HHS P01 CA095616NCRR NIH HHS T35 RR017188NIH HHS T35 OD010989NINDS NIH HHS R01 NS040276NINDS NIH HHS U24 NS050606NINDS NIH HHS U24NS050606
6 · The paper itself

Abstract

purposeIt would be useful to selectively block granule cell axon (mossy fiber) sprouting to test its functional role in temporal lobe epileptogenesis. Targeting axonal growth cones may be an effective strategy to block mossy fiber sprouting. L-type calcium channels and calcineurin, a calcium-activated phosphatase, are critical for normal growth cone function. Previous studies have provided encouraging evidence that blocking L-type calcium channels or inhibiting calcineurin during epileptogenic treatments suppresses mossy fiber sprouting.

methodsRats were treated systemically with pilocarpine to induce status epilepticus, which lasted at least 2 h. Then, osmotic pumps and cannulae were implanted to infuse calcineurin inhibitors (FK506 or cyclosporin A) or an L-type calcium channel blocker (nicardipine) into the dorsal dentate gyrus. After 28 days of continuous infusion, extent of mossy fiber sprouting was evaluated with Timm staining and stereological methods.

resultsPercentages of volumes of the granule cell layer plus molecular layer that were Timm-positive were similar in infused and noninfused hippocampi.

conclusionsThese findings suggest inhibiting calcineurin or L-type calcium channels does not block mossy fiber sprouting in the pilocarpine-treated rat model of temporal lobe epilepsy.

Indexed as

Calcineurin InhibitorsAnimalsBlotting, WesternCalcium Channel BlockersCalcium Channels, L-TypeCyclosporineEpilepsy, Temporal LobeImmunosuppressive AgentsMaleMossy Fibers, HippocampalMuscarinic AgonistsNicardipinePilocarpineRatsRats, Sprague-DawleyTacrolimusCalcineurin InhibitorsCalcium Channel BlockersCalcium Channels, L-TypeCyclosporineImmunosuppressive AgentsMuscarinic AgonistsNicardipinePilocarpineTacrolimus

Identifiers

PMID18616558
PMCPMC3007596

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Registered trials

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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.