Evidence map›Paper›PMID 19623608›Full record

ArticleHippocampus2010

Medial temporal lobe functioning and structure in the spontaneously hypertensive rat: comparison with Wistar-Kyoto normotensive and Wistar-Kyoto hypertensive strains.

Audrey M Wells, Amy C Janes, Xiaoxu Liu, Christian F Deschepper, Marc J Kaufman, Kathleen M Kantak

Open access · greenAbstract readComparative Study
In one paragraph

Article in Hippocampus, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 30% 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

11 citing papers in PubMed, 23 citations in OpenAlex.

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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 4 institutions in 2 countries.

Audrey M WellsDepartment of Psychology, Program in Neuroscience and CELEST Science of Learning Center, Boston University, Boston, Massachusetts 02215, USA.
Amy C Janes
Xiaoxu Liu
Christian F Deschepper
Marc J Kaufman
Kathleen M Kantak
Imaging Center · USBoston University · USHarvard University · USMontreal Clinical Research Institute · CA

Funding

ULTRA HIGH FIELD 9.4T ANIMAL MAGNETIC RESONANCE SCANNER: SUBSTANCE ABUSES10RR019356 · NCRR · MC LEAN HOSPITAL (BELMONT, MA) · PI KAUFMAN, MARC J · 2004 to 2004
$500k
Chronic drug exposures;serial MRI studiesK02DA017324 · NIDA · MC LEAN HOSPITAL (BELMONT, MA) · PI KAUFMAN, MARC J · 2004 to 2008
$468k
NCRR NIH HHS S10 RR019356NCRR NIH HHS S10RR019356NIDA NIH HHS K02 DA017324NIDA NIH HHS K02DA017324
6 · The paper itself

Abstract

The spontaneously hypertensive rat (SHR) is used as an animal model of attention deficit hyperactivity disorder (ADHD). It displays deficits in frontostriatal functioning, but it is unclear if medial temporal lobe functioning and structure are affected. We used behavioral tasks that evaluate functioning of the amygdala and hippocampus to compare male SHR to male rats from two inbred comparator strains, the normotensive Wistar-Kyoto (WKY) and the hypertensive Wistar-Kyoto (WKHT) rat (n = 8/strain). The three strains showed similar levels of amygdala-related stimulus-reward learning during conditioned cue preference testing. In the ambiguous T-maze task, which dissociates between spatial and habit learning, significantly more WKHT than SHR or WKY used a response (indicative of habit learning) versus a place (indicative of spatial learning) strategy during an early probe test on day 8. During a later probe test on day 24, WKY progressed significantly from using a place strategy to a response strategy. Throughout all probe tests, a place strategy was used predominately by SHR and a response strategy by WKHT. Thus, SHR exhibited deficits in dorsal striatum-related habit learning, whereas WKHT exhibited deficits in hippocampus-related spatial learning. Following behavioral testing, fluid attenuated inversion recovery (FLAIR) magnetic resonance imaging scans were conducted in subgroups of rats from each strain (n = 4/strain). FLAIR imaging detected bilateral hippocampal hyperintensities in three of four WKHT and unilateral hippocampal atrophy in one of four SHR. The association between response strategy use during the initial probe test to forage for food in the ambiguous T-maze task and bilateral hippocampal abnormalities was significant. Collectively, while medial temporal lobe functioning appears to be normal in SHR exhibiting an ADHD-like phenotype, WKHT rats display both hippocampal functioning deficits and signs of bilateral hippocampal cell loss. The latter characteristics might be used to develop a new animal model of age- or disease-related decline in hippocampal functioning.

Indexed as

Disease Models, AnimalRats, Inbred SHRRats, Inbred WKYAnimalsAttention Deficit Disorder with HyperactivityHypertensionLearningMagnetic Resonance ImagingMaleRatsTemporal Lobe

Identifiers

PMID19623608
PMCPMC2878848
OpenAlexW2093911049

What OpenQuestion holds

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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.