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Social isolation stress-resilient rats reveal energy shift from glycolysis to oxidative phosphorylation in hippocampal nonsynaptic mitochondria

Overview of attention for article published in Life Sciences, May 2020
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Title
Social isolation stress-resilient rats reveal energy shift from glycolysis to oxidative phosphorylation in hippocampal nonsynaptic mitochondria
Published in
Life Sciences, May 2020
DOI 10.1016/j.lfs.2020.117790
Pubmed ID
Authors

Dragana Filipović, Ivana Perić, Victor Costina, Andrijana Stanisavljević, Peter Gass, Peter Findeisen

Abstract

To examine the differences in the hippocampal proteome profiles of resilience or susceptibility to chronic social isolation (CSIS), animal model of depression, and to identify biomarkers that can distinguish the two. Comparative subproteomic approach was used to identify changes in hippocampal cytosol and nonsynaptic mitochondria (NSM) of CSIS-resilient compared to CSIS-sensitive or control rats. The resilient and sensitive phenotypes of CSIS rats were distinguished based on their sucrose preference values. Selected proteins were validated by Western blot or immunofluorescence. Predominantly down-regulated processes such as cytosolic cytoskeleton organization, the calcium signaling pathway, ubiquitin proteasome degradation, redox system, malate/aspartate shuttling and glutamate metabolism in CSIS-resilient compared to CSIS-sensitive rats were found. Decreased protein expression of glycolytic enzymes with simultaneous increased expression of Aco2 involved in tricarboxylic acid cycle and expression of several subunits composing oxidative phosphorylation involved enzymes (Uqcrc2, Atp5f1a, Atp5f1b) were found, indicating shift in energy production from glycolysis to oxidative phosphorylation in NSM. The four-fold higher level of mitochondrial glyceraldehyde-3-phosphate dehydrogenase of resilient rats indicated its transfer from the cytosol to the NSM. An increased level of transketolase along with the reduced pyruvate kinase level suggested an activated pentose phosphate pathway in CSIS-resilient relative to control rats. Cytosolic up-regulated CSIS proteins were implicated in antioxidative and proteasomal systems, while down-regulated NSM protein was involved in oxidative phosphorylation. The identified altered activated pathways and potential biomarkers enhance understanding of molecular mechanisms underlying resilience or susceptibility to CSIS, crucial in developing new therapeutic strategies.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 24 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 24 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 5 21%
Student > Master 3 13%
Student > Postgraduate 2 8%
Student > Doctoral Student 2 8%
Professor > Associate Professor 2 8%
Other 2 8%
Unknown 8 33%
Readers by discipline Count As %
Neuroscience 5 21%
Biochemistry, Genetics and Molecular Biology 2 8%
Nursing and Health Professions 2 8%
Medicine and Dentistry 2 8%
Agricultural and Biological Sciences 2 8%
Other 3 13%
Unknown 8 33%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. 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 19 May 2020.
All research outputs
#17,297,846
of 25,387,668 outputs
Outputs from Life Sciences
#5,122
of 7,634 outputs
Outputs of similar age
#273,579
of 424,107 outputs
Outputs of similar age from Life Sciences
#79
of 178 outputs
Altmetric has tracked 25,387,668 research outputs across all sources so far. This one is in the 21st percentile – i.e., 21% of other outputs scored the same or lower than it.
So far Altmetric has tracked 7,634 research outputs from this source. They receive a mean Attention Score of 4.7. This one is in the 25th percentile – i.e., 25% of its peers scored the same or lower than it.
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We're also able to compare this research output to 178 others from the same source and published within six weeks on either side of this one. This one is in the 46th percentile – i.e., 46% of its contemporaries scored the same or lower than it.