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Identification of lead-binding proteins as carriers and potential molecular targets associated with systolic blood pressure.
- Source :
-
Chemosphere . Nov2023, Vol. 341, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Lead (Pb) exposure is well recognized as a significant environmental factor associated with the high incidence of cardiovascular diseases. However, the carriers and molecular targets of Pb in human blood remain to be understood, especially for a real Pb exposure scenario. In this study, a total of 350 blood samples were collected from the smelting workers and systematically analyzed using metallomics and metalloproteomics approaches. The results showed that the majority of Pb (∼99.4%) could be presented in the blood cells. Pb in the cytoplasm of blood cells accounted for approximately 83.1% of the total blood Pb, with nearly half of Pb being bound to proteins. Pb-binding proteins in the blood of workers were identified as hemoglobin, catalase, haptoglobin, δ-aminolevulinic acid dehydratase, and peroxiredoxin-2. Multiple linear regression analysis demonstrated that higher levels of Pb bound to proteins (Mix-bound Pb and Protein-bound Pb) were positively associated with higher systolic blood pressure (p < 0.05). However, the association between blood lead level, Pb levels in the blood cells and systolic blood pressure was not observed (p > 0.05). This study suggested that Pb bound to proteins could be a suitable biomarker for indicating the potential risk of occupational hypertension. [Display omitted] • 99.4% of Pb was concentrated in blood cells of workers, and primarily (83.1%) existed in cytoplasm, the distribution patterns of Pb in the blood was affected by workplaces. • Pb selectively bound to proteins in blood cells of workers, including hemoglobin, catalase, haptoglobin, δ-aminolevulinic acid dehydratase, and peroxiredoxin-2. • Protein-bound Pb is an earlier and more sensitive indicator than blood lead levels, as it is positively correlated with systolic blood pressure, indicating the risk of hypertension. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00456535
- Volume :
- 341
- Database :
- Academic Search Index
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 172043292
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2023.140138