Resumo

NEGRIN, Judith et al. Trans, trans muconic acid and hepatic, renal and hematological profile in workers exposed to benzene. Salud de los Trabajadores [online]. 2014, vol.22, n.2, pp.121-128. ISSN 1315-0138.

Benzene is a hydrocarbon frequently used in the chemical industry and considered to have high toxicological risk. For this reason, biological monitoring of exposed workers is an important preventive measure. The purpose of this study was to evaluate urinary trans, trans-muconic acid levels (t,t- MA) as a biological indicator of benzene exposure and associated hepatic, renal and hematological profiles in workers at a gas station in San Felipe, Yaracuy State, using a cross-sectional study design. Forty-one benzene exposed (E) workers and 31 non-exposed workers (NE) voluntarily participated. Measurement of urinary t,t-MA was performed post-shift, and analyzed by high efficiency liquid chromatography technique (HPLC). Routine blood samples were obtained to determine the hematological and biochemical parameters. Results showed t,t-MA levels were significantly higher in E versus NE workers (3.00 vs. 0.23 mg/g creatinine) and a positive significant correlation with exposure time was observed in E workers (r=0,565; p<0,001). Transaminases, alkaline phosphatase and bilirubin) were within the reference range in E); gamma glutamyl transferase and creatinine levels, however, were significantly higher than in NE. Hematological profiles were all within the reference range, with no statistically significant differences between E and NE. In conclusion increasing values of t, t-MA in exposed workers correlated with exposure time, but no liver, blood and kidney impairment was observed.

Palavras-chave : chemical industry; benzene; occupational exposure.

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