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Modulation of High‐Voltage–Activated Calcium Channels in Dentate Granule Cells by Topiramate

2000· article· en· W2141637053 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueEpilepsia · 2000
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicIon channel regulation and function
Canadian institutionsToronto General HospitalHolland Bloorview Kids Rehabilitation HospitalToronto Western HospitalToronto Rehabilitation InstituteUniversity of Toronto
Fundersnot available
KeywordsDentate gyrusChemistryPatch clampVoltage-dependent calcium channelCalciumBiophysicsGranule (geology)TopiramateElectrophysiologyNeuroscienceHippocampal formationBiologyBiochemistryReceptor

Abstract

fetched live from OpenAlex

PURPOSE: In this study, we assessed the effects of topiramate (TPM) on high-voltage-activated calcium channel (HVACC) currents in vitro. METHODS: HVACC currents were recorded from rat dentate gyrus granule cells by using whole-cell patch-clamp techniques. The biophysical properties of HVACCs were used to separate voltage-activated Ca2+ currents into different subtypes. Three concentrations of TPM were tested: 1, 10, and 50 microM. RESULTS: TPM inhibited L-type currents and was more effective at 10 microM than at 50 microM, suggesting that there may be an optimal concentration at which TPM decreases L-type currents. Non-L-type currents were transiently increased by TPM at a high concentration (50 microM). CONCLUSIONS: Because the location of L-type calcium channels on soma and proximal dendrites gives these channels a crucial role in controlling dendritic excitability and in providing calcium for intracellular effectors, the decrease in the L-type HVA Ca2+ currents may be an important anticonvulsant mechanism of TPM.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.444

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.234
Teacher spread0.225 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it