13.02.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

AX6-80<br />

Table AX6-4.1 (cont’d). Renal Effects <strong>of</strong> <strong>Lead</strong> in the General Population<br />

Reference, Study<br />

Location, and<br />

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

Asia (cont’d)<br />

Satarug et al. (2004)<br />

Bangkok, Thailand<br />

Study date not<br />

provided<br />

Middle East<br />

Mortada et al. (2004)<br />

Egypt<br />

Study date not<br />

provided<br />

96 Thai men.<br />

Subjects subdivided into nonsmokers (n = 53), current<br />

smokers (n = 27), and ex-smokers (n = 16).<br />

Renal outcome measures noted below, also include<br />

BUN and total urinary protein.<br />

Serum creatinine<br />

0.94 mg/dL (nonsmokers)<br />

0.93 mg/dL (smokers)<br />

0.96 mg/dL (ex-smokers)<br />

Urinary NAG<br />

4.4 U/g creatinine (nonsmokers)<br />

4.2 U/g creatinine (smokers)<br />

3.8 U/g creatinine (ex-smokers)<br />

Urinary ∃2-microglobulin<br />

51 µg/g creatinine (nonsmokers)<br />

95 µg/g creatinine (smokers)<br />

98 µg/g creatinine (ex-smokers)<br />

68 Egyptian men (35 smokers, 33).<br />

Renal outcomes included serum creatinine, BUN, and<br />

∃ 2- microglobulin and urinary albumin, NAG, ∃ 2microglobulin,<br />

alkaline phosphatase, and γ-glutamyl<br />

transferase.<br />

Mean “serum” Pb<br />

0.42 µg/dL (nonsmokers)<br />

0.9 µg/dL (smokers)<br />

0.61 µg/dL (ex-smokers)<br />

Mean urinary Pb<br />

1.3 µg/g creatinine<br />

(nonsmokers)<br />

1.4 µg/g creatinine (smokers)<br />

1.4 µg/g creatinine (exsmokers)<br />

Urinary cadmium<br />

also assessed.<br />

Mean blood Pb<br />

14.4 µg/dL (smokers)<br />

10.2 µg/dL (nonsmokers)<br />

Pb also measured in urine,<br />

hair, and nails.<br />

Also measured cadmium, and<br />

mercury.<br />

Urinary Pb correlated with urinary protein (r = 0.49,<br />

p < 0.01) in smokers and at borderline significance<br />

(r = 0.22; p = 0.06) in never smokers. Also correlated<br />

with ∃2-microglobulin in ex-smokers at borderline<br />

significance (r = 0.39; p = 0.06).<br />

Urinary cadmium correlated with urinary NAG in current<br />

and never smokers and at borderline significance<br />

(p = 0.07) in ex-smokers. Also correlated with urinary<br />

protein and ∃2-microglobulin in current smokers and, at<br />

borderline significance, in never smokers.<br />

Limitations = small sample size, Pb dose assessment since<br />

only urine Pb used in renal analyses, limited data analysis.<br />

Blood and hair Pb levels significantly higher in smokers as<br />

compared to nonsmokers.<br />

No significant differences in renal outcome measures by<br />

smoking status. No correlation between exposure indices<br />

and renal outcome measures.<br />

Limitations: small sample size, data analysis – no<br />

adjustment.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!