Central hemodynamics in relation to low-level environmental lead exposure

Yu, Cai-Guo - Wei, Fang-Fei - Zhang, Zhen-Yu - Thijs, Lutgarde - Yang, Wen-Yi - Mujaj, Blerim - Feng, Ying-Mei - Boggia, José - Roels, Harry A. - Struijker-Boudier, Harry A. J. - Nawrot, Tim S. - Verhamme, Peter - Staessen, Jan A.

Resumen:

Purpose: Arterial stiffness predicts cardiovascular complications. The association between arterial stiffness and blood lead (BL) remains poorly documented. We aimed to assess the association of central hemodynamic measurements, including pulse wave velocity (aPWV), with blood lead in a Flemish population.Materials and Methods: In this Flemish population study (mean age, 37.0 years; 48.3% women), 267 participants had their whole BL and 24-h urinary cadmium (UCd) measured by electrothermal atomic absorption spectrometry in 1985-2005. After 9.4 years (median), they underwent applanation tonometry to estimate central pulse pressure (cPP), the augmentation index (AI), pressure amplification (PA), and aPWV. The amplitudes of the forward (Pf) and backward (Pb) pulse waves and reflection index (RI) were derived by a pressure-based wave separation algorithm.Results: BL averaged 2.93 μg/dL (interquartile range, 1.80-4.70) and UCd 4.79 µg (2.91-7.85). Mean values were 45.0 ± 15.2 mm Hg for cPP, 24.4 ± 12.4% for AI, 1.34 ± 0.21 for PA, 7.65 ± 1.74 m/s for aPWV, 32.7 ± 9.9 mm Hg for Pf, 21.8 ± 8.4 mm Hg for Pb, and 66.9 ± 18.4% for RI. The multivariable-adjusted association sizes for a 2-fold higher BL were: +3.03% (95% confidence interval, 1.56, 4.50) for AI; -0.06 (-0.08, -0.04) for PA; 1.02 mm Hg (0.02, 2.02) for Pb; and 3.98% (1.71, 6.24) for RI (p ≤ .045). In 206 participants never on antihypertensive drug treatment, association sizes were +2.59 mm Hg (0.39, 4.79) for cPP and +0.26 m/s (0.03, 0.50) for aPWV. Analyses adjusted for co-exposure to cadmium were consistent.Conclusion: In conclusion, low-level environmental lead exposure possibly contributes to arterial stiffening and wave reflection from peripheral sites.

Detalles Bibliográficos
2020
Arterial stiffness
Central blood pressure measurement
Central hemodynamics
Environmental medicine
Lead
ADOLESCENTE
ADULTO
EXPOSICIÓN A RIESGOS AMBIENTALES
EFECTOS ADVERSOS A LARGO PLAZO
CONTAMINANTES AMBIENTALES
SANGRE
HEMODINÁMICA
PERSONA DE MEDIANA EDAD
PLOMO
INTOXICACIÓN DEL SISTEMA NERVIOSO POR PLOMO EN ADULTOS
FACTORES DE RIESGO
MEDICIÓN DE RIESGO
ENFERMEDADES VASCULARES
TRASTORNOS QUÍMICAMENTE INDUCIDOS
DIAGNÓSTICO
RIGIDEZ VASCULAR
ADULTO JOVEN
Inglés
Universidad de la República
COLIBRI
https://hdl.handle.net/20.500.12008/55807
Acceso abierto
Licencia Creative Commons Atribución (CC - By 4.0)