Evidence map›Paper›PMID 26100537›Full record

ArticleMolecular psychiatry2016

L-type Ca²⁺ channel blockade with antihypertensive medication disrupts VTA synaptic plasticity and drug-associated contextual memory.

M Degoulet, C E Stelly, K-C Ahn, H Morikawa

Open access · bronzeAbstract read
In one paragraph

Article in Molecular psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 12% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
  2. Isradipine augmentation of virtual reality cue exposure therapy for tobacco craving: a triple-blind randomized controlled trial.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Trial
  3. Reinventing amlodipine.The Journal of pharmacology and experimental therapeutics · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
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  11. CaBritish journal of pharmacology · 2023
    Review
  12. CaNeuropharmacology · 2023
    Article
  13. Review
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  15. Article
  16. Review
  17. Article
  18. Article
  19. CaTranslational psychiatry · 2021
    Article
  20. 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 at 2 institutions in 2 countries.

M DegouletDepartment of Neuroscience and Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, Austin, TX, USA.
C E StellyDepartment of Neuroscience and Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, Austin, TX, USA.
K-C AhnDepartment of Neuroscience and Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, Austin, TX, USA.
H MorikawaDepartment of Neuroscience and Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, Austin, TX, USA.
The University of Texas at Austin · USUniversity of British Columbia · CA

Funding

Neurochemical & Behavioral Correlates of ETOH EffectsT32AA007471 · NIAAA · UNIVERSITY OF TEXAS AUSTIN · PI Kimberly Nixon · 1987 to 2026
$9.2M
Calcium Signaling in the Reward Circuit &Drug AddictionR01DA015687 · NIDA · UNIVERSITY OF TEXAS AUSTIN · PI MORIKAWA, HITOSHI · 2003 to 2013
$2.4M
Alcohol Action on Neurons in the Brain Reward CircuitR01AA015521 · NIAAA · UNIVERSITY OF TEXAS AT AUSTIN · PI MORIKAWA, HITOSHI · 2007 to 2017
$2.4M
NIAAA NIH HHS R01 AA015521NIAAA NIH HHS T32 AA007471NIDA NIH HHS R01 DA015687
6 · The paper itself

Abstract

Drug addiction is driven, in part, by powerful and enduring memories of sensory cues associated with drug intake. As such, relapse to drug use during abstinence is frequently triggered by an encounter with drug-associated cues, including the drug itself. L-type Ca(2+) channels (LTCCs) are known to regulate different forms of synaptic plasticity, the major neural substrate for learning and memory, in various brain areas. Long-term potentiation (LTP) of NMDA receptor (NMDAR)-mediated glutamatergic transmission in the ventral tegmental area (VTA) may contribute to the increased motivational valence of drug-associated cues triggering relapse. In this study, using rat brain slices, we found that isradipine, a general LTCC antagonist used as antihypertensive medication, not only blocks the induction of NMDAR LTP but also promotes the reversal of previously induced LTP in the VTA. In behaving rats, isradipine injected into the VTA suppressed the acquisition of cocaine-paired contextual cue memory assessed using a conditioned place preference (CPP) paradigm. Furthermore, administration of isradipine or a CaV1.3 subtype-selective LTCC antagonist (systemic or intra-VTA) before a single extinction or reinstatement session, while having no immediate effect at the time of administration, abolished previously acquired cocaine and alcohol (ethanol) CPP on subsequent days. Notably, CPP thus extinguished cannot be reinstated by drug re-exposure, even after 2 weeks of withdrawal. These results suggest that LTCC blockade during exposure to drug-associated cues may cause unlearning of the increased valence of those cues, presumably via reversal of glutamatergic synaptic plasticity in the VTA.

Indexed as

Analysis of VarianceAnimalsAntihypertensive AgentsCalcium Channel BlockersCocaineConditioning, OperantDrug InteractionsElectric StimulationExcitatory Amino Acid AgentsExtinction, PsychologicalIn Vitro TechniquesIsradipineLong-Term PotentiationMaleMemoryNeurotransmitter AgentsAntihypertensive AgentsCalcium Channel BlockersCocaineExcitatory Amino Acid AgentsIsradipineNeurotransmitter Agents

Identifiers

PMID26100537
PMCPMC4689680
OpenAlexW1485642171

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.