RT Journal Article SR Electronic T1 Urinary kallikrein activity of workers exposed to lead. JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 226 OP 229 DO 10.1136/oem.35.3.226 VO 35 IS 3 A1 P Boscolo A1 G Porcelli A1 G Cecchetti A1 E Salimei A1 A Iannaccone YR 1978 UL http://oem.bmj.com/content/35/3/226.abstract AB Two groups of men of different age ranges and with the same period of lead exposure were selected for study in a recently opened car-battery factory. Two other groups of age-matched men, not exposed to heavy metals in their work, were used as controls. Morning urines were collected from control and exposed groups for determination of urinary kallikrein activity, urinary delta-amino-levulinic acid (ALA) and lead levels. The environmental lead levels and the urinary ALA and lead values indicated that exposure in the factory was not heavy. The older group of lead-exposed workers showed greatly reduced urinary kallikrein activity compared with that of the age-matched controls. In contrast, the younger group did not show any significant alteration in urinary kallikrein excretion.