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The effects of inhaled multi-walled carbon nanotubes on blood pressure and cardiac function

Overview of attention for article published in Discover Nano, July 2018
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Title
The effects of inhaled multi-walled carbon nanotubes on blood pressure and cardiac function
Published in
Discover Nano, July 2018
DOI 10.1186/s11671-018-2603-5
Pubmed ID
Authors

Wen Zheng, Walter McKinney, Michael L. Kashon, Daniel Pan, Vincent Castranova, Hong Kan

Abstract

Heart rate variability (HRV) as a marker reflects the activity of the autonomic nervous system. The prognostic significance of HRV for cardiovascular disease has been reported in clinical and epidemiological studies. Our laboratory has reported alterations in rat heart rate variability (HRV) due to increasing activity of both sympathetic and parasympathetic nervous system after pulmonary exposure to multi-walled carbon nanotubes (MWCNTs). This suggests that pulmonary inhalation of engineered nanoparticles (ENs) may lead to functional changes in the cardiovascular system. The present study further investigated the effects of inhaled MWCNTs on the cardiovascular system and evaluated the correlation between the alterations in HRV and changes in cardiovascular function. Male Sprague-Dawley rats were pre-implanted with a telemetry device and exposed by inhalation to MWCNTs for 5 h at a concentration of 5 mg/m3. The electrocardiogram (EKG) and blood pressure were recorded in real time by the telemetry system at pre-exposure, during exposure, and 1 and 7 days post-exposure. In vivo cardiac functional performance in response to dobutamine was determined by a computerized pressure-volume loop system. Inhalation of MWCNTs significantly increased both systolic and diastolic blood pressure and decreased heart rate in awake freely moving rat. Additionally, inhalation of MWCNTs also reduced cardiac stroke work, stroke volume, and output in response to dobutamine in anesthetized rats. Inhalation of MWCNTs altered cardiovascular performance, which was associated with MWCNT exposure-induced alterations in the sympathetic and parasympathetic nervous system. These findings suggest the need to further investigate the cardiovascular effects of inhaled MWCNTs.

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Geographical breakdown

Country Count As %
Unknown 20 100%

Demographic breakdown

Readers by professional status Count As %
Professor 3 15%
Researcher 3 15%
Student > Bachelor 2 10%
Student > Ph. D. Student 1 5%
Unspecified 1 5%
Other 2 10%
Unknown 8 40%
Readers by discipline Count As %
Sports and Recreations 2 10%
Pharmacology, Toxicology and Pharmaceutical Science 1 5%
Nursing and Health Professions 1 5%
Agricultural and Biological Sciences 1 5%
Unspecified 1 5%
Other 4 20%
Unknown 10 50%
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 03 December 2022.
All research outputs
#19,985,639
of 25,424,630 outputs
Outputs from Discover Nano
#673
of 1,150 outputs
Outputs of similar age
#250,722
of 341,372 outputs
Outputs of similar age from Discover Nano
#11
of 14 outputs
Altmetric has tracked 25,424,630 research outputs across all sources so far. This one is in the 18th percentile – i.e., 18% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,150 research outputs from this source. They receive a mean Attention Score of 3.5. This one is in the 39th percentile – i.e., 39% of its peers scored the same or lower than it.
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We're also able to compare this research output to 14 others from the same source and published within six weeks on either side of this one. This one is in the 28th percentile – i.e., 28% of its contemporaries scored the same or lower than it.