Glucose Metabolic Disorders Enhance Vascular Dysfunction Triggered by Particulate Air Pollution: a Panel Study
Wu Chen1, Yiqun Han1,2, Yanwen Wang1,3
1BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering, Center for Environment and Health (W.C., Y.H., Y.W., X.C., X.Q., Y.X., T.Z.), Peking University, Beijing, China.
Hypertension (Dallas, Tex. : 1979)
|February 23, 2022
Summary
Short-term exposure to air pollution (particulate matter) worsens vascular dysfunction, especially in individuals with prediabetes or high blood sugar. Glucose metabolic status significantly impacts these cardiovascular effects.
Area of Science:
- Environmental Health
- Cardiovascular Physiology
- Metabolic Disorders
Background:
- Particulate matter (PM) exposure is linked to adverse cardiovascular outcomes.
- The impact of ambient PM on vascular function in prediabetic individuals remains unclear.
Purpose of the Study:
- To investigate the association between short-term ambient PM exposure and vascular function in individuals with and without prediabetes.
- To examine how glucose metabolic status modifies these associations.
Main Methods:
- A panel study of 112 Beijing residents measured multiple vascular function indices.
- Associations between vascular indices and exposure to PM (PM2.5, ultrafine particles, etc.) were analyzed using linear mixed-effects models.
- The modifying role of glucose metabolic status was assessed.
Main Results:
- Increased vascular dysfunction (e.g., elevated pulse pressures, reduced viability ratio) was significantly associated with PM exposure in all participants.
- PM exposure led to greater vascular dysfunction in individuals with high fasting blood glucose levels compared to those with lower levels.
Conclusions:
- Glucose metabolic disorders may exacerbate PM-induced vascular dysfunction.
- Short-term PM exposure poses a significant risk to vascular health, particularly in vulnerable populations with impaired glucose metabolism.
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