Evidence map›Paper›PMID 34352385›Full record

ArticleNeurobiology of disease2021

A novel role for the ADHD risk gene latrophilin-3 in learning and memory in Lphn3 knockout rats.

Samantha L Regan, Emily M Pitzer, Jillian R Hufgard, Chiho Sugimoto, Michael T Williams, Charles V Vorhees

Open access · goldAbstract read
In one paragraph

Article in Neurobiology of disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

18 citing papers in PubMed, 25 citations in OpenAlex.

  1. Adhesion G protein-coupled receptors.Pharmacological reviews · 2026
    Review
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  13. Novel non-stimulants rescue hyperactive phenotype in an adgrl3.1 mutant zebrafish model of ADHD.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Article
  14. Article
  15. Article
  16. Review of rodent models of attention deficit hyperactivity disorder.Neuroscience and biobehavioral reviews · 2022
    Review
  17. Article
  18. 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

6 authors at 2 institutions in 1 country.

Samantha L ReganDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA. Electronic address: slregan@med.umich.edu.
Emily M PitzerDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA. Electronic address: Pitzer.emily@epa.gov.
Jillian R HufgardDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA.
Chiho SugimotoDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA.
Michael T WilliamsDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA. Electronic address: michael.williams@cchmc.org.
Charles V VorheesDepartment of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA; Division of Neurology, Cincinnati Children's Research Foundation, Cincinnati, OH, 45229, USA. Electronic address: charles.vorhees@cchmc.org.
University of Cincinnati Medical Center · USCincinnati Children's Hospital Medical Center · US

Funding

TRAINING PROGRAM IN TERATOLOGYT32ES007051 · NIEHS · CINCINNATI CHILDRENS HOSP MED CTR · PI VORHEES, CHARLES V · 1985 to 2018
$4.1M
Integrative Pharmacological Sciences Training Program (IPSTP)T32GM142521 · NIGMS · MICHIGAN STATE UNIVERSITY · PI ANNE M. DORRANCE, Gina Marie Leinninger · 2021 to 2026
$2.4M
Gene-pesticide interactions and ADHDR01ES032270 · NIEHS · CINCINNATI CHILDRENS HOSP MED CTR · PI VORHEES, CHARLES V, WILLIAMS, MICHAEL T · 2020 to 2024
$2.2M
Latrophilin-3 and ADHD: A new potential mechanismR21MH101609 · NIMH · CINCINNATI CHILDRENS HOSP MED CTR · PI VORHEES, CHARLES V · 2013 to 2014
$421k
NIEHS NIH HHS R01 ES032270NIEHS NIH HHS T32 ES007051NIGMS NIH HHS T32 GM142521NIMH NIH HHS R21 MH101609
6 · The paper itself

Abstract

Latrophilins (LPHNs) are adhesion G protein-coupled receptors with three isoforms but only LPHN3 is brain specific (caudate, prefrontal cortex, dentate, amygdala, and cerebellum). Variants of LPHN3 are associated with ADHD. Null mutations of Lphn3 in rat, mouse, zebrafish, and Drosophila result in hyperactivity, but its role in learning and memory (L&M) is largely unknown. Using our Lphn3 knockout (KO) rats we examined the cognitive abilities, long-term potentiation (LTP) in CA1, NMDA receptor expression, and neurohistology from heterozygous breeding pairs. KO rats were impaired in egocentric L&M in the Cincinnati water maze, spatial L&M and cognitive flexibility in the Morris water maze (MWM), with no effects on conditioned freezing, novel object recognition, or temporal order recognition. KO-associated locomotor hyperactivity had no effect on swim speed. KO rats had reduced early-LTP but not late-LTP and had reduced hippocampal NMDA-NR1 expression. In a second experiment, KO rats responded to a light prepulse prior to an acoustic startle pulse, reflecting visual signal detection. In a third experiment, KO rats given extra MWM pretraining and hidden platform overtraining showed no evidence of reaching WT rats' levels of learning. Nissl histology revealed no structural abnormalities in KO rats. LPHN3 has a selective effect on egocentric and allocentric L&M without effects on conditioned freezing or recognition memory.

Indexed as

Attention Deficit Disorder with HyperactivityAnimalsCognitionGene Knockout TechniquesHippocampusLong-Term PotentiationMaze LearningRatsRats, Sprague-DawleyReceptors, G-Protein-CoupledReceptors, N-Methyl-D-AspartateReceptors, PeptideRecognition, PsychologyReflex, StartleSpatial Memorylphn3 protein, ratReceptors, G-Protein-CoupledReceptors, N-Methyl-D-AspartateReceptors, PeptideAdgrl-3CognitionEgocentric learningLong-term potentiationLphn3Lphn3 knockout ratNovel object recognitionSpatial learning and memory

Identifiers

PMID34352385
PMCPMC8440465
OpenAlexW3191891295

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.