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CCR5 limits cortical viral loads during West Nile virus infection of the central nervous system

Overview of attention for article published in Journal of Neuroinflammation, December 2015
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  • Above-average Attention Score compared to outputs of the same age (57th percentile)
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22 Mendeley
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Title
CCR5 limits cortical viral loads during West Nile virus infection of the central nervous system
Published in
Journal of Neuroinflammation, December 2015
DOI 10.1186/s12974-015-0447-9
Pubmed ID
Authors

Douglas M. Durrant, Brian P. Daniels, TracyJo Pasieka, Denise Dorsey, Robyn S. Klein

Abstract

Cell-mediated immunity is critical for clearance of central nervous system (CNS) infection with the encephalitic flavivirus, West Nile virus (WNV). Prior studies from our laboratory have shown that WNV-infected neurons express chemoattractants that mediate recruitment of antiviral leukocytes into the CNS. Although the chemokine receptor, CCR5, has been shown to play an important role in CNS host defense during WNV infection, regional effects of its activity within the infected brain have not been defined. We used CCR5-deficient mice and an established murine model of WNV encephalitis to determine whether CCR5 activity impacts on WNV levels within the CNS in a region-specific fashion. Statistical comparisons between groups were made with one- or two-way analysis of variance; Bonferroni's post hoc test was subsequently used to compare individual means. Survival was analyzed by the log-rank test. Analyses were conducted using Prism software (GraphPad Prism). All data were expressed as means ± SEM. Differences were considered significant if P ≤ 0.05. As previously shown, lack of CCR5 activity led to increased symptomatic disease and mortality in mice after subcutaneous infection with WNV. Evaluation of viral burden in the footpad, draining lymph nodes, spleen, olfactory bulb, and cerebellum derived from WNV-infected wild-type, and CCR5(-/-) mice showed no differences between the genotypes. In contrast, WNV-infected, CCR5(-/-) mice exhibited significantly increased viral burden in cortical tissues, including the hippocampus, at day 8 post-infection. CNS regional studies of chemokine expression via luminex analysis revealed significantly increased expression of CCR5 ligands, CCL4 and CCL5, within the cortices of WNV-infected, CCR5(-/-) mice compared with those of similarly infected WT animals. Cortical elevations in viral loads and CCR5 ligands in WNV-infected, CCR5(-/-) mice, however, were associated with decreased numbers of infiltrating mononuclear cells and increased permeability of the blood-brain barrier. These data indicate that regional differences in chemokine expression occur in response to WNV infection of the CNS, and that cortical neurons require CCR5 activity to limit viral burden in this brain region.

Twitter Demographics

The data shown below were collected from the profiles of 3 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 22 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 6 27%
Student > Master 3 14%
Researcher 3 14%
Student > Bachelor 3 14%
Other 2 9%
Other 5 23%
Readers by discipline Count As %
Agricultural and Biological Sciences 5 23%
Medicine and Dentistry 4 18%
Unspecified 3 14%
Nursing and Health Professions 2 9%
Biochemistry, Genetics and Molecular Biology 2 9%
Other 6 27%

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 28 March 2019.
All research outputs
#7,634,119
of 13,549,568 outputs
Outputs from Journal of Neuroinflammation
#682
of 1,576 outputs
Outputs of similar age
#130,996
of 317,522 outputs
Outputs of similar age from Journal of Neuroinflammation
#77
of 146 outputs
Altmetric has tracked 13,549,568 research outputs across all sources so far. This one is in the 42nd percentile – i.e., 42% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,576 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.1. This one has gotten more attention than average, scoring higher than 54% 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 317,522 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 57% of its contemporaries.
We're also able to compare this research output to 146 others from the same source and published within six weeks on either side of this one. This one is in the 44th percentile – i.e., 44% of its contemporaries scored the same or lower than it.