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

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AX6-210<br />

Table AX6-8.1 (cont’d). Effects <strong>of</strong> <strong>Lead</strong> on Immune Function in Children<br />

Reference, Study<br />

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

Asia<br />

Sun et al. (2003); Zhao<br />

et al. (2004)<br />

China<br />

NR<br />

Design: cross-sectional<br />

Subjects: children (n = 73) age 3–6 yrs<br />

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

lymphocyte phenotype abundance<br />

Analysis: Nonparametric comparisons <strong>of</strong><br />

outcome measures stratified by blood Pb<br />

Blood Pb (µg/dL) mean<br />

(SD, range) (n = 217):<br />

9.5 (5.6, 2.6–43.7)<br />

Females: significantly higher (p < 0.05) IgE levels in high blood Pb<br />

category (∃10 µg/dL, n = 16) compared to low category (

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