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Sökning: onr:22087413 > Exposure to wood sm...

Exposure to wood smoke increases arterial stiffness and decreases heart rate variability in humans [Elektronisk resurs]

Unosson, Jon (författare)
Blomberg, Anders 1961- (författare)
Sandström, Thomas 1957- (författare)
Muala, Ala (författare)
Boman, Christoffer (författare)
Nyström, Robin (författare)
Westerholm, Roger (författare)
Mills, Nicholas L. (författare)
Newby, David E. (författare)
Langrish, Jeremy P. (författare)
Bosson, Jenny 1975- (författare)
Umeå universitet Medicinska fakulteten (utgivare)
Alternativt namn: Umeå universitet. Medicinsk-odontologiska fakulteten
Alternativt namn: Medicinska fakulteten vid Umeå universitet
Umeå universitet Teknisk-naturvetenskapliga fakulteten (utgivare)
Umeå universitet Teknisk-naturvetenskapliga fakulteten (utgivare)
ETPC (medarbetare)
London, England BioMed Central 2013
Engelska.
Ingår i: Particle and Fibre Toxicology. - 1743-8977. ; 10, 20
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  • Background: Emissions from biomass combustion are a major source of indoor and outdoor air pollution, and are estimated to cause millions of premature deaths worldwide annually. Whilst adverse respiratory health effects of biomass exposure are well established, less is known about its effects on the cardiovascular system. In this study we assessed the effect of exposure to wood smoke on heart rate, blood pressure, central arterial stiffness and heart rate variability in otherwise healthy persons. Methods: Fourteen healthy non-smoking subjects participated in a randomized, double-blind crossover study. Subjects were exposed to dilute wood smoke (mean particle concentration of 314 +/- 38 mu g/m(3)) or filtered air for three hours during intermittent exercise. Heart rate, blood pressure, central arterial stiffness and heart rate variability were measured at baseline and for one hour post-exposure. Results: Central arterial stiffness, measured as augmentation index, augmentation pressure and pulse wave velocity, was higher after wood smoke exposure as compared to filtered air (p < 0.01 for all), and heart rate was increased (p < 0.01) although there was no effect on blood pressure. Heart rate variability (SDNN, RMSSD and pNN50; p = 0.003, p < 0.001 and p < 0.001 respectively) was decreased one hour following exposure to wood smoke compared to filtered air. Conclusions: Acute exposure to wood smoke as a model of exposure to biomass combustion is associated with an immediate increase in central arterial stiffness and a simultaneous reduction in heart rate variability. As biomass is used for cooking and heating by a large fraction of the global population and is currently advocated as a sustainable alternative energy source, further studies are required to establish its likely impact on cardiovascular disease. 

Ämnesord

Medical and Health Sciences  (hsv)
Medicin och hälsovetenskap  (hsv)

Indexterm och SAB-rubrik

Biomass
Air pollution
Arterial stiffness
Blood pressure
Heart rate variability
Cardiovascular
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