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Inhaled ambient-level traffic-derived particulates decrease cardiac vagal influence and baroreflexes and increase arrhythmia in a rat model of metabolic syndrome

Overview of attention for article published in Particle and Fibre Toxicology, May 2017
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Title
Inhaled ambient-level traffic-derived particulates decrease cardiac vagal influence and baroreflexes and increase arrhythmia in a rat model of metabolic syndrome
Published in
Particle and Fibre Toxicology, May 2017
DOI 10.1186/s12989-017-0196-2
Pubmed ID
Authors

Alex P. Carll, Samir M. Crespo, Mauricio S. Filho, Douglas H. Zati, Brent A. Coull, Edgar A. Diaz, Rodrigo D. Raimundo, Thomas N. G. Jaeger, Ana Laura Ricci-Vitor, Vasileios Papapostolou, Joy E. Lawrence, David M. Garner, Brigham S. Perry, Jack R. Harkema, John J. Godleski

Abstract

Epidemiological studies have linked exposures to ambient fine particulate matter (PM2.5) and traffic with autonomic nervous system imbalance (ANS) and cardiac pathophysiology, especially in individuals with preexisting disease. It is unclear whether metabolic syndrome (MetS) increases susceptibility to the effects of PM2.5. We hypothesized that exposure to traffic-derived primary and secondary organic aerosols (P + SOA) at ambient levels would cause autonomic and cardiovascular dysfunction in rats exhibiting features of MetS. Male Sprague Dawley (SD) rats were fed a high-fructose diet (HFrD) to induce MetS, and exposed to P + SOA (20.4 ± 0.9 μg/m(3)) for 12 days with time-matched comparison to filtered-air (FA) exposed MetS rats; normal diet (ND) SD rats were separately exposed to FA or P + SOA (56.3 ± 1.2 μg/m(3)). In MetS rats, P + SOA exposure decreased HRV, QTc, PR, and expiratory time overall (mean effect across the entirety of exposure), increased breathing rate overall, decreased baroreflex sensitivity (BRS) on three exposure days, and increased spontaneous atrioventricular (AV) block Mobitz Type II arrhythmia on exposure day 4 relative to FA-exposed animals receiving the same diet. Among ND rats, P + SOA decreased HRV only on day 1 and did not significantly alter BRS despite overall hypertensive responses relative to FA. Correlations between HRV, ECG, BRS, and breathing parameters suggested a role for autonomic imbalance in the pathophysiologic effects of P + SOA among MetS rats. Autonomic cardiovascular responses to P + SOA at ambient PM2.5 levels were pronounced among MetS rats and indicated blunted vagal influence over cardiovascular physiology. Results support epidemiologic findings that MetS increases susceptibility to the adverse cardiac effects of ambient-level PM2.5, potentially through ANS imbalance.

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The data shown below were collected from the profiles of 3 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 65 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 65 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 11 17%
Student > Bachelor 6 9%
Professor 4 6%
Student > Doctoral Student 4 6%
Other 3 5%
Other 12 18%
Unknown 25 38%
Readers by discipline Count As %
Medicine and Dentistry 9 14%
Nursing and Health Professions 5 8%
Pharmacology, Toxicology and Pharmaceutical Science 4 6%
Environmental Science 4 6%
Agricultural and Biological Sciences 3 5%
Other 12 18%
Unknown 28 43%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 3. 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 14 January 2018.
All research outputs
#13,319,356
of 22,974,684 outputs
Outputs from Particle and Fibre Toxicology
#290
of 561 outputs
Outputs of similar age
#155,322
of 313,676 outputs
Outputs of similar age from Particle and Fibre Toxicology
#5
of 12 outputs
Altmetric has tracked 22,974,684 research outputs across all sources so far. This one is in the 41st percentile – i.e., 41% of other outputs scored the same or lower than it.
So far Altmetric has tracked 561 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.3. This one is in the 46th percentile – i.e., 46% 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 313,676 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 49th percentile – i.e., 49% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 12 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 58% of its contemporaries.