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Effects of the intrahippocampal injection of anti-Lgi1 antibody on cognitive function and seizure susceptibility in mice

2023· article· en· W4390654083 on OpenAlexaff
Eri Kikuchi, Saki Shimizu, Yuto Ishizaki, Akihiro Shimotake, Kiyohide Usami, Masao Matsuhashi, Ryōsuke Takahashi, Akio Ikeda, Yukihiro Ohno

Bibliographic record

VenueProceedings for Annual Meeting of The Japanese Pharmacological Society · 2023
Typearticle
Languageen
FieldMedicine
TopicAutoimmune Neurological Disorders and Treatments
Canadian institutionsCentre for Movement Disorders
Fundersnot available
KeywordsPentylenetetrazolEpilepsyHippocampusHippocampal formationMedicineAntibodyImmunohistochemistryAutoantibodyEpileptic seizureCerebral cortexPathologyImmunologyAnesthesiaNeuroscienceEndocrinologyPsychologyPsychiatry

Abstract

fetched live from OpenAlex

Anti-LGI1 (Leucine-rich, glioma-inactivated 1) antibody is an autoantibody detected from some patients with autoimmune epilepsy or limbic encephalitis with clinical features of focal seizures and cognitive impairment. In addition, previous study reported that Lgi1-knock out mice exhibited increased susceptibility to seizure induction. In this study, we evaluated the effects of intrahippocampal anti-Lgi1 antibody on cognitive function and seizure susceptibility in mice. C57BL/6J mice were intrahippocampally microinjected with anti-Lgi1 antibody (Abcam). A week later, the novel object recognition test and the seizure susceptibility test against pentylenetetrazol (PTZ, 35 mg/kg, i.p.) were performed. Areas of brain excitation were also evaluated by immunohistochemical analysis of c-Fos expression. While no cognitive impairment was observed, the intrahippocampal injection of anti-Lgi1 antibody showed a tendency to increase the seizure susceptibility to PTZ, as compared to control mice. In addition, analysis of c-Fos expression using mice without seizure showed significant increase in c-Fos expression in cerebral cortex and hippocampal CA3 area of the antibody-injected mice compared to control mice. Anti-Lgi1 antibody may promote the seizure occurrence by enhancing neural activity in cerebral cortex and hippocampus.

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.

How this classification was reachedexpand

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)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.564
Threshold uncertainty score0.346

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
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 head0.015
GPT teacher head0.302
Teacher spread0.287 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2023
Admission routes1
Has abstractyes

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Same venueProceedings for Annual Meeting of The Japanese Pharmacological SocietySame topicAutoimmune Neurological Disorders and TreatmentsFrench-language works237,207