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Loss of FMRP Impaired Hippocampal Long-Term Plasticity and Spatial Learning in Rats

Overview of attention for article published in Frontiers in Molecular Neuroscience, August 2017
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  • Above-average Attention Score compared to outputs of the same age (63rd percentile)
  • Good Attention Score compared to outputs of the same age and source (74th percentile)

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Title
Loss of FMRP Impaired Hippocampal Long-Term Plasticity and Spatial Learning in Rats
Published in
Frontiers in Molecular Neuroscience, August 2017
DOI 10.3389/fnmol.2017.00269
Pubmed ID
Authors

Yonglu Tian, Chaojuan Yang, Shujiang Shang, Yijun Cai, Xiaofei Deng, Jian Zhang, Feng Shao, Desheng Zhu, Yunbo Liu, Guiquan Chen, Jing Liang, Qiang Sun, Zilong Qiu, Chen Zhang

Abstract

Fragile X syndrome (FXS) is a neurodevelopmental disorder caused by mutations in the FMR1 gene that inactivate expression of the gene product, the fragile X mental retardation 1 protein (FMRP). In this study, we used clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) technology to generate Fmr1 knockout (KO) rats by disruption of the fourth exon of the Fmr1 gene. Western blotting analysis confirmed that the FMRP was absent from the brains of the Fmr1 KO rats (Fmr1(exon4-KO) ). Electrophysiological analysis revealed that the theta-burst stimulation (TBS)-induced long-term potentiation (LTP) and the low-frequency stimulus (LFS)-induced long-term depression (LTD) were decreased in the hippocampal Schaffer collateral pathway of the Fmr1(exon4-KO) rats. Short-term plasticity, measured as the paired-pulse ratio, remained normal in the KO rats. The synaptic strength mediated by the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) was also impaired. Consistent with previous reports, the Fmr1(exon4-KO) rats demonstrated an enhanced 3,5-dihydroxyphenylglycine (DHPG)-induced LTD in the present study, and this enhancement is insensitive to protein translation. In addition, the Fmr1(exon4-KO) rats showed deficits in the probe trial in the Morris water maze test. These results demonstrate that deletion of the Fmr1 gene in rats specifically impairs long-term synaptic plasticity and hippocampus-dependent learning in a manner resembling the key symptoms of FXS. Furthermore, the Fmr1(exon4-KO) rats displayed impaired social interaction and macroorchidism, the results consistent with those observed in patients with FXS. Thus, Fmr1(exon4-KO) rats constitute a novel rat model of FXS that complements existing mouse models.

X Demographics

X Demographics

The data shown below were collected from the profiles of 6 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 111 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 111 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 21 19%
Student > Bachelor 20 18%
Student > Master 12 11%
Researcher 8 7%
Student > Doctoral Student 7 6%
Other 12 11%
Unknown 31 28%
Readers by discipline Count As %
Neuroscience 30 27%
Biochemistry, Genetics and Molecular Biology 16 14%
Agricultural and Biological Sciences 11 10%
Psychology 5 5%
Nursing and Health Professions 3 3%
Other 13 12%
Unknown 33 30%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 June 2021.
All research outputs
#7,893,471
of 25,262,379 outputs
Outputs from Frontiers in Molecular Neuroscience
#1,116
of 3,318 outputs
Outputs of similar age
#114,668
of 322,395 outputs
Outputs of similar age from Frontiers in Molecular Neuroscience
#26
of 102 outputs
Altmetric has tracked 25,262,379 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 3,318 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.2. This one has gotten more attention than average, scoring higher than 65% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 322,395 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 63% of its contemporaries.
We're also able to compare this research output to 102 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 74% of its contemporaries.