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Microarray analyses reveal novel targets of exercise-induced stress resistance in the dorsal raphe nucleus

Overview of attention for article published in Frontiers in Behavioral Neuroscience, January 2013
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Title
Microarray analyses reveal novel targets of exercise-induced stress resistance in the dorsal raphe nucleus
Published in
Frontiers in Behavioral Neuroscience, January 2013
DOI 10.3389/fnbeh.2013.00037
Pubmed ID
Authors

Alice B. Loughridge, Benjamin N. Greenwood, Heidi E. W. Day, Matthew B. McQueen, Monika Fleshner

Abstract

Serotonin (5-HT) is implicated in the development of stress-related mood disorders in humans. Physical activity reduces the risk of developing stress-related mood disorders, such as depression and anxiety. In rats, 6 weeks of wheel running protects against stress-induced behaviors thought to resemble symptoms of human anxiety and depression. The mechanisms by which exercise confers protection against stress-induced behaviors, however, remain unknown. One way by which exercise could generate stress resistance is by producing plastic changes in gene expression in the dorsal raphe nucleus (DRN). The DRN has a high concentration of 5-HT neurons and is implicated in stress-related mood disorders. The goal of the current experiment was to identify changes in the expression of genes that could be novel targets of exercise-induced stress resistance in the DRN. Adult, male F344 rats were allowed voluntary access to running wheels for 6 weeks; exposed to inescapable stress or no stress; and sacrificed immediately and 2 h after stressor termination. Laser capture micro dissection selectively sampled the DRN. mRNA expression was measured using the whole genome Affymetrix microarray. Comprehensive data analyses of gene expression included differential gene expression, log fold change (LFC) contrast analyses with False Discovery Rate correction, KEGG and Wiki Web Gestalt pathway enrichment analyses, and Weighted Gene Correlational Network Analysis (WGCNA). Our results suggest that physically active rats exposed to stress modulate expression of twice the number of genes, and display a more rapid and strongly coordinated response, than sedentary rats. Bioinformatics analyses revealed several potential targets of stress resistance including genes that are related to immune processes, tryptophan metabolism, and circadian/diurnal rhythms.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 65 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 5%
Canada 1 2%
Unknown 61 94%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 12 18%
Student > Bachelor 10 15%
Researcher 7 11%
Student > Doctoral Student 6 9%
Professor 4 6%
Other 15 23%
Unknown 11 17%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 20%
Psychology 9 14%
Medicine and Dentistry 8 12%
Neuroscience 7 11%
Biochemistry, Genetics and Molecular Biology 6 9%
Other 8 12%
Unknown 14 22%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. 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 17 November 2014.
All research outputs
#14,753,163
of 22,710,079 outputs
Outputs from Frontiers in Behavioral Neuroscience
#2,030
of 3,147 outputs
Outputs of similar age
#175,292
of 280,734 outputs
Outputs of similar age from Frontiers in Behavioral Neuroscience
#85
of 165 outputs
Altmetric has tracked 22,710,079 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,147 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 11.3. This one is in the 30th percentile – i.e., 30% of its peers scored the same or lower than it.
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 280,734 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 35th percentile – i.e., 35% of its contemporaries scored the same or lower than it.
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