Ácido trans, trans mucónico y perfil hepático, hematológico y renal en trabajadores expuestos a benceno

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.El benceno es un hidrocarburo frecuentemente utilizado en la industria química, considerado de alto riesgo toxicológico, por lo que el monitoreo biológico de los trabajadores expuestos es una importante medida para la prevención de la intoxicación ocupacional. El objetivo fue evaluar los niveles de ácido trans, trans-mucónico (t,t-MA) en orina como indicador biológico de exposición a benceno y el perfil hepático, hematológico y renal en trabajadores de gasolineras de San Felipe, estado Yaracuy. Se realizó un estudio de diseño no experimental, tipo descriptivo, correlacional, transversal y de campo; participaron 41 trabajadores expuestos (E) al benceno y 31 trabajadores no expuestos (NE). La determinación del biomarcador se realizó mediante la técnica de cromatografía líquida de alta eficiencia en orina tomada al final de la jornada laboral, y los parámetros hematológicos y bioquímicos en muestras de sangre completa y suero. Los resultados mostraron valores de t,t-MA significativamente mayores en E comparados con los (NE) (3,00 vs. 0,23 mg/g creatinina), correlación significativa entre los valores de t,t-MA de los E con el tiempo de exposición (r = 0,565; p