Evidence map›Paper›PMID 19370341›Full record

ArticlePsychopharmacology2009

Long-term effects of neonatal MK-801 treatment on prepulse inhibition in young adult rats.

Takashi Uehara, Tomiki Sumiyoshi, Tomonori Seo, Hiroko Itoh, Tadasu Matsuoka, Michio Suzuki, Masayoshi Kurachi

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Article in Psychopharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

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  16. Animal models of schizophrenia.British journal of pharmacology · 2011
    Review
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

7 authors.

Takashi UeharaDepartment of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, 2630 Sugitani, Toyama, Japan. uehara@med.u-toyama.ac.jp
Tomiki Sumiyoshi
Tomonori Seo
Hiroko Itoh
Tadasu Matsuoka
Michio Suzuki
Masayoshi Kurachi

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleBlockade of N-methyl-D-asparate (NMDA) receptors has been shown to produce some of the abnormal behaviors related to symptoms of schizophrenia in rodents and human. Neonatal treatment of rats with non-competitive NMDA antagonists has been shown to induce behavioral abnormality in a later period.

objectivesThe aim of this study was to determine whether brief disruption of NMDA receptor function during a critical stage of development is sufficient to produce sensorimotor-gating deficits in the late adolescence or early adulthood in the rat.

methodsMale pups received the NMDA receptor blocker MK-801 (0.13 or 0.20 mg/kg), or an equal volume of saline on postnatal day (PD) 7 through 10. The animals were tested twice for prepulse inhibition (PPI) and locomotor activity in pre- (PD 35-38) and post- (PD 56-59) puberty.

resultsNeonatal exposure to both doses MK-801 disrupted PPI in the adolescence and early adulthood. Low-dose MK-801 elicited long-term effects on startle amplitudes, whereas high-dose MK-801 did not. Neither dose of MK-801 showed a significant effect on spontaneous locomotor activity, whereas the high dose attenuated rearing.

conclusionsThe results of this study suggest neonatal exposure to MK-801 disrupted sensorimotor gating in the adolescence and early adulthood stages. These findings indicate that rats transiently exposed to NMDA blockers in neonatal periods are useful for the study of the pathophysiology and treatment of schizophrenia.

Indexed as

Age FactorsAnimalsAnimals, NewbornDisease Models, AnimalDizocilpine MaleateDose-Response Relationship, DrugExcitatory Amino Acid AntagonistsHumansMaleMotor ActivityRatsRats, WistarReceptors, N-Methyl-D-AspartateReflex, StartleSchizophreniaSensory GatingDizocilpine MaleateExcitatory Amino Acid AntagonistsReceptors, N-Methyl-D-Aspartate

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What OpenQuestion holds

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Registered trials

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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.