Ultrafine particles, blood pressure and adult hypertension: a population-based survey in Northeast China

Li Zi Lin, Meng Gao, Xiang Xiao, Luke D Knibbs, Lidia Morawska, Shyamali C Dharmage, Joachim Heinrich, Bin Jalaludin, Shao Lin, Yuming Guo, Shu Li Xu, Qi Zhen Wu, Gongbo Chen, Bo Yi Yang, Xiao Wen Zeng, Yunjiang Yu*, Li Wen Hu*, Guang Hui Dong*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The toxicity of ultrafine particles (UFPs) on blood pressure (BP) has not been well studied. We aimed to evaluate the associations of long-term UFP exposure with different components of BP and the risk of prehypertension/hypertension. We included a total of 24 845 Chinese adults (18–74 years old) in a cross-sectional survey (Liaoning province, China). The 4 year (2006–2009) average concentrations of UFP was estimated using a chemical transport model. We measured systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP) and pulse pressure (PP), prehypertension and hypertension. We used a generalized linear mixed model to examine the associations while controlling for important individual covariates. One unit (1 μg m−3) increase in UFP was associated with an increase in SBP of 1.52 mm Hg [95% confidence interval (CI): 0.48–2.55], DBP of 0.55 mm Hg (95% CI: 0.01–1.08) in DBP, MAP of 0.92 mm Hg (95% CI: 0.23–1.61) and PP of 0.62 mm Hg (95% CI: 0.05–1.20). The UFP-BP associations were stronger in women than in men. One unit increase in UFP was associated with an increased risk of hypertension and prehypertension (OR = 1.23, 95% CI: 1.09–1.38; OR = 1.12, 95% CI: 1.04–1.21) compared to normotension group, and these associations were stronger in overweight/obese participants. Our study showed that long-term exposure to UFP was associated with elevated BP and higher odds of hypertension. These findings suggest that strategies to monitor and reduce UFPs, which are not a regulated pollutant, could have beneficial cardiovascular effects.

Original languageEnglish
Article number094041
JournalEnvironmental Research Letters
Volume16
Issue number9
DOIs
Publication statusPublished - Sep 2021

Scopus Subject Areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Public Health, Environmental and Occupational Health

User-Defined Keywords

  • blood pressure
  • hypertension
  • prehypertension
  • public health
  • ultrafine particles

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