Associations of lead biomarkers with renal function in Korean lead workers

V. M. Weaver, B. K. Lee, K. D. Ahn, G. S. Lee, A. C. Todd, W. F. Stewart, J. Wen, D. J. Simon, P. J. Parsons, B. S. Schwartz

Research output: Contribution to journalArticle

Abstract

Aims: To compare associations of lead biomarkers with renal function in current and former lead workers. Methods: Cross sectional analysis of first year results from a longitudinal study of 803 lead workers and 135 controls in South Korea. Clinical renal function was assessed by blood urea nitrogen (BUN), serum creatinine, and measured and calculated creatinine clearance. Urinary N-acetyl-β-D-glucosaminidase (NAG) and retinol-binding protein were also measured. Results: Mean (SD) tibia lead, blood lead, and DMSA chelatable lead levels in lead workers were 37.2 (40.4) μg/g bone mineral, 32.0 (15.0) μg/dl, and 767.8 (862.1) μg/g creatinine, respectively. Higher lead measures were associated with worse renal function in 16/42 models. When influential outliers were removed, higher lead measures remained associated with worse renal function in nine models. An additional five associations were in the opposite direction. Effect modification by age was observed. In 3/16 models, associations between higher lead measures and worse clinical renal function in participants in the oldest age tertile were significantly different from associations in those in the youngest age tertile which were in the opposite direction. Mean urinary cadmium (CdU) was 1.1 μg/g creatinine (n = 191). Higher CdU levels were associated with higher NAG. Conclusions: These data suggest that lead has an adverse effect on renal function in the moderate dose range, particularly in older workers. Associations between higher lead measures and lower BUN and serum creatinine and higher creatinine clearances may represent lead induced hyperfiltration. Environmental cadmium may also have an adverse renal impact, at least on NAG.

Original languageEnglish (US)
Pages (from-to)551-562
Number of pages12
JournalOccupational and Environmental Medicine
Volume60
Issue number8
DOIs
StatePublished - Aug 1 2003

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Fingerprint Dive into the research topics of 'Associations of lead biomarkers with renal function in Korean lead workers'. Together they form a unique fingerprint.

  • Cite this

    Weaver, V. M., Lee, B. K., Ahn, K. D., Lee, G. S., Todd, A. C., Stewart, W. F., Wen, J., Simon, D. J., Parsons, P. J., & Schwartz, B. S. (2003). Associations of lead biomarkers with renal function in Korean lead workers. Occupational and Environmental Medicine, 60(8), 551-562. https://doi.org/10.1136/oem.60.8.551