Abstract：
OBJECTIVES:: To investigate the exposure to terephthalic acid (TPA), and to evaluate it's effects on organ function including the potential risk factors for uroliths and bladder tumor to TPA. METHODS:: Exposure-response modeling was carried out in a cohort of 141 TPA exposure workers and three subgroups were classified according to their urine TPA concentration. The control group consisted of 77 workers with no exposure to TPA dust. The inhalatory exposure of the application workers was estimated from biological monitoring data. Urine and blood samples were collected from all workers before and after work shift to monitor variables of liver, kidney, and lung. Haematological variables and serum biochemistry were valued, pulmonary functions were tested, and ion changes in both serum and urine were measured. RESULTS:: Increased urinary excretion of TPA (0-5mmol/molCr after the shift) reflected occupational workers TPA exposure. We also observed the exposure-response relations for the intensity of TPA exposure and the urine variables. Increased serum aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) but within normal range is not increased. The slightly increased serum angiotensin-converting enzyme activity (SACE) was considered to be related to particulate of airborne TPA dust inhalation. No difference between referents and workers exposed to TPA was found for haematological variables. CONCLUSIONS:: No clinical organ dysfunctions were found in this investigation working with TPA. However, special precautions are still necessarily taken to avoid excessive or prolonged contact.
journal_name
Environ Toxicol Pharmacoljournal_title
Environmental toxicology and pharmacologyauthors
Dai G,Cui L,Song L,Gong N,Chen J,Zhao R,Wang S,Chang HC,Wang Xdoi
10.1016/j.etap.2005.01.007subject
Has Abstractpub_date
2005-07-01 00:00:00pages
209-14issue
1eissn
1382-6689issn
1872-7077pii
S1382-6689(05)00015-3journal_volume
20pub_type
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