Association between relatively low blood lead levels and urinary δ-aminolevulinic acid concentrations among male workers at a Japanese battery factory.

ABSTRACT:

Objectives

Whether the known positive association between blood lead (PbB) levels and urinary δ-aminolevulinic acid (ALAU) also exists at relatively low PbB levels (<40 μg/dL) remains unclear. We aimed to investigate this association at lower PbB levels.

Methods

We analyzed data from biannual medical examinations of workers at a Japanese factory from August 2013 to August 2023. We excluded records from female workers and those with missing data, resulting in a dataset consisting of 1396 records from 155 male workers. We employed mixed-effect linear regression models with a random intercept for workers and additional adjustments for age and smoking status.

Results

The median PbB level across all the analyzed records was 8 μg/dL (range: 1-31 μg/dL). Significant positive

SUBMITTER: Hasegawa K 

PROVIDER: S-EPMC11472743 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature