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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX6-215<br />

Table AX6-8.2 (cont’d). Effects <strong>of</strong> <strong>Lead</strong> on Immune Function in Adults<br />

Reference, Study<br />

Location, and Period Study Description Pb Measurement Findings, Interpretation<br />

Latin America (cont’d)<br />

Queiroz et al. (1994a)<br />

Brazil<br />

NR<br />

Queiroz et al. (1994b)<br />

Brazil<br />

NR<br />

Asia<br />

Kuo et al. (2001)<br />

China<br />

NR<br />

Design: cross-sectional cohort<br />

Subjects: adult male battery manufacture<br />

workers (n = 60), mean age 33.9 yr (range<br />

18–56); reference subjects (n = 49) matched<br />

by age and race<br />

Outcome measures: PMN phagocytic/lytic<br />

activity (opsonized yeast)<br />

Analysis: nonparametric comparison <strong>of</strong><br />

outcome measures between worker and<br />

reference groups<br />

Design: cross-sectional cohort<br />

Subjects: adult male battery manufacture<br />

workers (n = 33), mean age 32.4 yr (range<br />

18–56); reference subjects (n = 20) matched<br />

by age and race<br />

Outcome measures: serum IgA, IgG, IgM;<br />

mitogen (PHA)-induced lymphocyte<br />

proliferation<br />

Analysis: parametric comparison <strong>of</strong><br />

outcome measures between worker and<br />

reference groups<br />

Design: cross-sectional cohort<br />

Subjects: adult battery manufacture workers<br />

(n = 64, 21 female) 14 subject aged 50 yr; nonexposed<br />

reference subjects (n = 34, 17 female).<br />

Outcome measures: differential blood cell<br />

counts, lymphocyte phenotype abundance<br />

Analysis: comparison <strong>of</strong> outcome measures<br />

in exposed and reference groups,<br />

multivariate linear regression<br />

Blood Pb (µg/dL) range:<br />

Pb: 14.8–91.4 (>30,<br />

n = 27)<br />

Reference: 30,<br />

n = 27)<br />

Reference:

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