Evidence map›Paper›PMID 21515375›Full record

ArticleNeurobiology of disease2011

The L-type channel antagonist isradipine is neuroprotective in a mouse model of Parkinson's disease.

E Ilijic, J N Guzman, D J Surmeier

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of disease, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 145 papers.

0numbers the graph read from it
0cells of the map it votes in
145citing papers in PubMed
8.6field-weighted citation impact, top 2% 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

145 citing papers in PubMed, 254 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Review
  4. Article
  5. Nanoscale CabioRxiv : the preprint server for biology · 2026
    Article
  6. Selective CaStem cell reports · 2026
    Article
  7. Article
  8. Article
  9. Neuroprotection in Parkinson Disease.Neurology and therapy · 2025
    Review
  10. Article
  11. Disease-modifying, multidimensional efficacy of putaminal CaMolecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. The Leucine-Rich Repeat Kinase 2 Variant LRRK2International journal of molecular sciences · 2025
    Article
  17. Review
  18. Calcium Ions in the Physiology and Pathology of the Central Nervous System.International journal of molecular sciences · 2024
    Review
  19. Article
  20. Article

85 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

E IlijicDepartment of Physiology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
J N Guzman
D J Surmeier
Northwestern University · US

Funding

SYNAPTIC CONTROLOF PALLIDAL ACTIVITYP50NS047085 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SURMEIER, DALTON JAMES · 2003 to 2018
$19.2M
Udall Parkinson's Disease Center at Emory University: Circuitry to TherapyP50NS071669 · NINDS · EMORY UNIVERSITY · PI WICHMANN, THOMAS · 2010 to 2015
$6.8M
NINDS NIH HHS NS047085NINDS NIH HHS P50 NS047085NINDS NIH HHS P50 NS071669
6 · The paper itself

Abstract

The motor symptoms of Parkinson's disease (PD) are due to the progressive loss of dopamine (DA) neurons in substantia nigra pars compacta (SNc). Nothing is known to slow the progression of the disease, making the identification of potential neuroprotective agents of great clinical importance. Previous studies using the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) model of PD have shown that antagonism of L-type Ca2+ channels protects SNc DA neurons. However, this was not true in a 6-hydroxydopamine (6-OHDA) model. One potential explanation for this discrepancy is that protection in the 6-OHDA model requires greater antagonism of Cav1.3 L-type Ca2+ channels thought to underlie vulnerability and this was not achievable with the low affinity dihydropyridine (DHP) antagonist used. To test this hypothesis, the DHP with the highest affinity for Cav1.3L-type channels-isradipine-was systemically administered and then the DA toxin 6-OHDA injected intrastriatally. Twenty-five days later, neuroprotection and plasma concentration of isradipine were determined. This analysis revealed that isradipine produced a dose-dependent sparing of DA fibers and cell bodies at concentrations achievable in humans, suggesting that isradipine is a potentially viable neuroprotective agent for PD.

Indexed as

AnimalsCalcium Channel BlockersCalcium Channels, L-TypeDihydropyridinesDisease Models, AnimalIsradipineMaleMiceMice, Inbred C57BLNeuroprotective AgentsParkinsonian DisordersCacna1d protein, mouseCalcium Channel BlockersCalcium Channels, L-TypeDihydropyridinesIsradipineNeuroprotective Agents

Identifiers

PMID21515375
PMCPMC3235730
OpenAlexW2010680034

What OpenQuestion holds

Textmetadata
LicenceTDM
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.