Cited by 74Epilepsy research and treatmentNeuroscience and Neuropharmacology ResearchAutism Spectrum Disorder Research

Increased susceptibility to kainic acid–induced seizures in Engrailed-2 knockout mice

Tripathi, P.P., Sgadò, P., Scali, M., Viaggi, C., Casarosa, S., Simon, H.H., Vaglini, F., Corsini, G.U. +1 more·2009·Neuroscience

Abstract

The En2 gene, coding for the homeobox-containing transcription factor Engrailed-2 (EN2), has been associated to autism spectrum disorder (ASD). Due to neuroanatomical and behavioral abnormalities, which partly resemble those observed in ASD patients, En2 knockout (En2(-/-)) mice have been proposed as a model for ASD. In the mouse embryo, En2 is involved in the specification of midbrain/hindbrain regions, being predominantly expressed in the developing cerebellum and ventral midbrain, and its expression is maintained in these structures until adulthood. Here we show that in the adult mouse brain, En2 mRNA is expressed also in the hippocampus and cerebral cortex. Hippocampal En2 mRNA content decreased after seizures induced by kainic acid (KA). This suggests that En2 might also influence the functioning of forebrain areas during adulthood and in response to seizures. Indeed, a reduced expression of parvalbumin and somatostatin was detected in the hippocampus of En2(-/-) mice as compared to wild-type (WT) mice, indicating an altered GABAergic innervation of limbic circuits in En2(-/-) mice. In keeping with these results, En2(-/-) mice displayed an increased susceptibility to KA-induced seizures. KA (20 mg/kg) determined more severe and prolonged generalized seizures in En2(-/-) mice, when compared to WT animals. Seizures were accompanied by a widespread c-fos and c-jun mRNA induction in the brain of En2(-/-) but not WT mice. Long-term histopathological changes (CA1 cell loss, upregulation of neuropeptide Y) also occurred in the hippocampus of KA-treated En2(-/-) but not WT mice. These findings suggest that En2(-/-) mice might be used as a novel tool to study the link between epilepsy and ASD.

Integrity signals

Registry

Crossref · 10.1016/j.neuroscience.2009.01.007

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Tripathi, P. P., Sgadò, P., Scali, M., Viaggi, C., Casarosa, S., Simon, H. H., Vaglini, F., Corsini, G. U., & Bozzi, Y.
Affiliations
  • Scuola Normale Superiore (IT)
  • University of Pisa (IT)
  • Heidelberg University (DE)
  • Neuroscience Institute (IT)
Venue
Neuroscience
Publisher
Elsevier BV
Published
2009-03
Volume
159
Issue
2
Pages
842-849
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2035900692
Cited by
74
References
48
Citations by year
2025: 3 · 2024: 1 · 2023: 3 · 2022: 2 · 2021: 5 · 2020: 5 · 2019: 4 · 2018: 6 · 2017: 4 · 2016: 7 · 2015: 5 · 2014: 11 · 2013: 4 · 2012: 3
FWCI
2.88
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • Institutional Research Information System (Università degli Studi di Trento) (submittedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
Engrailed-2, autism spectrum disorder, kainic acid-induced seizures, epilepsy, hippocampus, GABAergic interneurons, parvalbumin, somatostatin, c-fos, c-Jun, neuropeptide Y, homeodomain transcription factor, limbic circuits
MeSH terms
Engrailed 2 Protein, Animals, Brain, Disease Susceptibility, Gene Expression Regulation, Kainic Acid, Mice, Inbred C57BL, Nerve Tissue Proteins, Parvalbumins, Reaction Time, RNA, Messenger, Seizures, Somatostatin, Time Factors, Proto-Oncogene Proteins c-jun, Proto-Oncogene Proteins c-fos, Mice, Knockout, Homeodomain Proteins, Excitatory Amino Acid Agonists, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review