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DOI10.1007/s12012-016-9360-4
Acrolein Inhalation Alters Myocardial Synchrony and Performance at and Below Exposure Concentrations that Cause Ventilatory Responses
Thompson, Leslie C.; Ledbetter, Allen D.; Haykal-Coates, Najwa; Cascio, Wayne E.; Hazari, Mehdi S.; Farraj, Aimen K.
发表日期2017-04-01
ISSN1530-7905
卷号17期号:2页码:97-108
英文摘要

Acrolein is an irritating aldehyde generated during combustion of organic compounds. Altered autonomic activity has been documented following acrolein inhalation, possibly impacting myocardial synchrony and function. Given the ubiquitous nature of acrolein in the environment, we sought to better define the immediate and delayed functional cardiac effects of acrolein inhalation in vivo. We hypothesized that acrolein inhalation would increase markers of cardiac mechanical dysfunction, i.e., myocardial dyssynchrony and performance index in mice. Male C57Bl/6J mice were exposed to filtered air (FA) or acrolein (0.3 or 3.0 ppm) for 3 h in whole-body plethysmography chambers (n = 6). Echocardiographic analyses were performed 1 day before exposure and at 1 and 24 h post-exposure. Speckle tracking echocardiography revealed that circumferential strain delay (i.e., dyssynchrony) was increased at 1 and 24 h following exposure to 3.0 ppm, but not 0.3 ppm, when compared to pre-exposure and/or FA exposure. Pulsed wave Doppler of transmitral blood flow revealed that acrolein exposure at 0.3 ppm, but not 3.0 ppm, increased the Tei index of myocardial performance (i.e., decreased global heart performance) at 1 and 24 h post-exposure compared to pre-exposure and/or FA exposure. We conclude that short-term inhalation of acrolein can acutely modify cardiac function in vivo and that echocardiographic evaluation of myocardial synchrony and performance following exposure to other inhaled pollutants could provide broader insight into the health effects of air pollution.


英文关键词Acrolein;Echocardiography;Myocardial strain;Myocardial dyssynchrony;Tei index
语种英语
WOS记录号WOS:000396022700001
来源期刊CARDIOVASCULAR TOXICOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/62015
作者单位US EPA, Environm Publ Hlth Div, 109 TW Alexander Dr,Mail Code B105-02, Res Triangle Pk, NC 27711 USA
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GB/T 7714
Thompson, Leslie C.,Ledbetter, Allen D.,Haykal-Coates, Najwa,et al. Acrolein Inhalation Alters Myocardial Synchrony and Performance at and Below Exposure Concentrations that Cause Ventilatory Responses[J]. 美国环保署,2017,17(2):97-108.
APA Thompson, Leslie C.,Ledbetter, Allen D.,Haykal-Coates, Najwa,Cascio, Wayne E.,Hazari, Mehdi S.,&Farraj, Aimen K..(2017).Acrolein Inhalation Alters Myocardial Synchrony and Performance at and Below Exposure Concentrations that Cause Ventilatory Responses.CARDIOVASCULAR TOXICOLOGY,17(2),97-108.
MLA Thompson, Leslie C.,et al."Acrolein Inhalation Alters Myocardial Synchrony and Performance at and Below Exposure Concentrations that Cause Ventilatory Responses".CARDIOVASCULAR TOXICOLOGY 17.2(2017):97-108.
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