Evidence map›Paper›PMID 25536363›Full record

ArticlePloS one2014

Role of synaptic structural plasticity in impairments of spatial learning and memory induced by developmental lead exposure in Wistar rats.

Yongmei Xiao, Hongjun Fu, Xiaojie Han, Xiaoxia Hu, Huaiyu Gu, Yilin Chen, Qing Wei, Qiansheng Hu

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.8field-weighted citation impact, top 34% 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

20 citing papers in PubMed, 51 citations in OpenAlex.

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  18. Long-term Administration of Salicylate-induced Changes in BDNF Expression and CREB Phosphorylation in the Auditory Cortex of Rats.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2018
    Article
  19. Article
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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

8 authors at 2 institutions in 2 countries.

Yongmei XiaoDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Hongjun FuThe Jackson Laboratory, 600 Main Street, Bar Harbor, Maine 04609, United States of America.
Xiaojie HanDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Xiaoxia HuDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Huaiyu GuSchool of Medicine, Sun Yat-Sen University, Guangzhou 510080, China.
Yilin ChenDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Qing WeiDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Qiansheng HuDepartment of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
Sun Yat-sen University · CNJackson Laboratory · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lead (Pb) is found to impair cognitive function. Synaptic structural plasticity is considered to be the physiological basis of synaptic functional plasticity and has been recently found to play important roles in learning and memory. To study the effect of Pb on spatial learning and memory at different developmental stages, and its relationship with alterations of synaptic structural plasticity, postnatal rats were randomly divided into three groups: Control; Pre-weaning Pb (Parents were exposed to 2 mM PbCl2 3 weeks before mating until weaning of pups); Post-weaning Pb (Weaned pups were exposed to 2 mM PbCl2 for 9 weeks). The spatial learning and memory of rats was measured by Morris water maze (MWM) on PND 85-90. Rat pups in Pre-weaning Pb and Post-weaning Pb groups performed significantly worse than those in Control group (p<0.05). However, there was no significant difference in the performance of MWM between the two Pb-exposure groups. Before MWM (PND 84), the number of neurons and synapses significantly decreased in Pre-weaning Pb group, but not in Post-weaning Pb group. After MWM (PND 91), the number of synapses in Pre-weaning Pb group increased significantly, but it was still less than that of Control group (p<0.05); the number of synapses in Post-weaning Pb group was also less than that of Control group (p<0.05), although the number of synapses has no differences between Post-weaning Pb and Control groups before MWM. In both Pre-weaning Pb and Post-weaning Pb groups, synaptic structural parameters such as thickness of postsynaptic density (PSD), length of synaptic active zone and synaptic curvature increased significantly while width of synaptic cleft decreased significantly compared to Control group (p<0.05). Our data demonstrated that both early and late developmental Pb exposure impaired spatial learning and memory as well as synaptic structural plasticity in Wistar rats.

Indexed as

AnimalsAnimals, NewbornCA1 Region, HippocampalCell CountFemaleGrowth and DevelopmentLeadMaze LearningMemoryNeuronal PlasticityNeuronsRats, WistarReaction TimeSpatial LearningSynapsesWeaningLead

Identifiers

PMID25536363
PMCPMC4275220
OpenAlexW2021834212

What OpenQuestion holds

Textmetadata
LicenceCC0
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.