Evidence map›Paper›PMID 33627175›Full record

ArticleMolecular brain2021

Simvastatin impairs hippocampal synaptic plasticity and cognitive function in mice.

Yujun Guo, Guichang Zou, Keke Qi, Jin Jin, Lei Yao, Yang Pan, Wei Xiong

Open access · goldAbstract read
In one paragraph

Article in Molecular brain, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

21 citing papers in PubMed, 35 citations in OpenAlex.

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  14. Cranial irradiation induces cognitive decline associated with altered dendritic spine morphology in the young rat hippocampus.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2022
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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

7 authors at 3 institutions in 1 country.

Yujun Guo *Department of Neurosurgery, Institute On Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences At the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Guichang Zou *Department of Neurosurgery, Institute On Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences At the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Keke QiNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China.
Jin JinDepartment of Neurosurgery, Institute On Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences At the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Lei YaoDepartment of Neurosurgery, Institute On Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences At the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Yang PanNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China.
Wei XiongDepartment of Neurosurgery, Institute On Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences At the Microscale, University of Science and Technology of China, Hefei, 230026, China. wxiong@ustc.edu.cn.
University of Science and Technology of China · CNNational Synchrotron Radiation Laboratory · CNCapital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lipophilic statins which are blood brain barrier (BBB) permeable are speculated to affect the cholesterol synthesis and neural functions in the central nervous system. However, whether these statins can affect cholesterol levels and synaptic plasticity in hippocampus and the in vivo consequence remain unclear. Here, we report that long-term subcutaneous treatments of simvastatin significantly impair mouse hippocampal synaptic plasticity, reflected by the attenuated long-term potentiation of field excitatory postsynaptic potentials. The simvastatin administration causes a deficiency in recognition and spatial memory but fails to affect motor ability and anxiety behaviors in the mice. Mass spectrometry imaging indicates a significant decrease in cholesterol intensity in hippocampus of the mice receiving chronic simvastatin treatments. Such effects of simvastatin are transient because drug discontinuation can restore the hippocampal cholesterol level and synaptic plasticity and the memory function. These findings may provide further clues to elucidate the mechanisms of neurological side effects, especially the brain cognitive function impairment, caused by long-term usage of BBB-permeable statins.

Indexed as

AnimalsBehavior, AnimalCholesterolCognitionHippocampusLong-Term PotentiationMaleMiceMice, Inbred C57BLNeuronal PlasticityRecognition, PsychologySimvastatinSpatial MemoryCholesterolSimvastatinCholesterolCognitionHippocampusMass spectrometry imagingSimvastatin

Identifiers

PMID33627175
PMCPMC7905661
OpenAlexW3114184451

What OpenQuestion holds

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LicenceCC BY
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.