Evidence map›Paper›PMID 28720388›Full record

ArticleNeurotoxicology2017

Strain specific effects of low level lead exposure on associative learning and memory in rats.

Megha Verma, J S Schneider

Open access · greenAbstract read
In one paragraph

Article in Neurotoxicology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.3field-weighted citation impact, top 22% 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

7 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

2 authors at 1 institution in 1 country.

Megha VermaDepartment of Pathology, Anatomy Cell Biology, Thomas Jefferson University, Philadelphia, PA, 19107, United States. Electronic address: megha.verma@jefferson.edu.
J S SchneiderDepartment of Pathology, Anatomy Cell Biology, Thomas Jefferson University, Philadelphia, PA, 19107, United States.
Thomas Jefferson University · US

Funding

Environment and Gene Effects on Brain and BehaviorR01ES015295 · NIEHS · THOMAS JEFFERSON UNIVERSITY · PI SCHNEIDER, JAY S · 2008 to 2017
$5.1M
NIEHS NIH HHS R01 ES015295
6 · The paper itself

Abstract

Exposure to lead (Pb) remains a significant public health concern. Lead exposure in early life impairs the normal development of numerous cognitive and neurobehavioral processes. Previous work has shown that the effects of developmental Pb exposure on gene expression patterns in the brain are modulated by various factors including the developmental timing of the exposure, level of exposure, sex, and genetic background. Using gene microarray profiling, we previously reported a significant strain-specific effect of Pb exposure on the hippocampal transcriptome, with the greatest number of differentially expressed transcripts in Long Evans (LE) rats and the fewest in Sprague Dawley (SD) rats. The present study examined the extent to which this differential effect of Pb on hippocampal gene expression might influence behavior. Animals (males and females) were tested in a trace fear conditioning paradigm to evaluate effects of Pb exposures (perinatal (PERI; gestation to postnatal day 21) or early postnatal (EPN; postnatal day 1 to day 21)) on associative learning and memory. All animals (Pb-exposed and non-Pb-exposed controls) showed normal acquisition of the conditioned stimulus (tone)-unconditioned stimulus (footshock) association. Long Evans rats showed a significant deficit in short- and long-term recall, influenced by sex and the timing of Pb exposure (PERI or EPN). In contrast, Pb exposure had no significant effect on memory consolidation or recall in any SD rats. These results further demonstrate the important influence of genetic background to the functional outcomes from developmental Pb exposure.

Indexed as

HippocampusPrenatal Exposure Delayed EffectsAge FactorsAnimalsAnimals, NewbornBody WeightConditioning, ClassicalFearFemaleGene Expression Regulation, DevelopmentalLeadMalePregnancyRatsRats, Long-EvansRats, Sprague-DawleyLeadDevelopmental lead exposureStrain differencesTrace fear conditioning

Identifiers

PMID28720388
PMCPMC5623628
OpenAlexW2735285629

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.