Advertisement

 

 

Vascular and cardiac autonomic function and PM2.5 constituents among the elderly: A longitudinal study.

Vascular and cardiac autonomic function and PM2.5 constituents among the elderly: A longitudinal study.
Author Information (click to view)

Lim YH, Bae HJ, Yi SM, Park E, Lee BE, Hong YC,


Lim YH, Bae HJ, Yi SM, Park E, Lee BE, Hong YC, (click to view)

Lim YH, Bae HJ, Yi SM, Park E, Lee BE, Hong YC,

Advertisement
Share on FacebookTweet about this on TwitterShare on LinkedIn

The Science of the total environment 2017 07 13607-608() 847-854 pii S0048-9697(17)31780-1
Abstract
BACKGROUND
Although epidemiologic studies have shown an association between the total mass of particulate matter <2.5μm in aerodynamic diameter (PM2.5) and cardiovascular disease, few studies have examined PM2.5 constituents associated with vascular and cardiac autonomic dysfunction. METHODS
In this longitudinal study, we investigated the relationship between PM2.5 constituents and blood pressure (BP), and markers of the autonomic nervous system. In 466 elderly subjects residing in communities in Seoul, Korea, we examined 16 constituents, seven sources, and total mass concentrations of PM2.5. We measured the BP, heart rate (HR), and indices of heart rate variability (HRV), such as the standard deviation of normal-to-normal intervals (SDNN), square root of the mean squared differences of successive NN intervals (rMSSD), and two frequency-domain variables (low frequency [LF] and high frequency [HF]). We used linear mixed effects models to assess the association of PM2.5 constituents and sources with cardiovascular markers.

RESULTS
BP, HR, and rMSSD were associated with concentration of total mass of PM2.5. For each increase of the interquartile range in PM2.5 constituents, systolic and diastolic BP, and HR increased by 2.1-3.3mmHg, 1.2-2.3mmHg, and 1.2-1.9bpm, respectively, while the rMSSD, LF, and HF decreased by 8.1-9.3%, 16.6%, and 20.4%, respectively. Particularly, elemental carbon, sulfate, ammonium, lead, and strontium in the PM2.5 constituents and emissions from oil combustion and incineration were associated with increased BP, HR, and decreased HRV.

CONCLUSIONS
Our results suggest an association between specific PM2.5 constituents and vascular and cardiac autonomic functions. These findings may provide supportive evidence for developing a pollution reduction plan to prevent cardiovascular diseases.

Submit a Comment

Your email address will not be published. Required fields are marked *

20 − seven =

[ HIDE/SHOW ]