The activity of urinary NAG in 51 male and 26 female workers exposed to chromium were studied.Workers exposed to chromium showed that,although the urinary protein and urinary β 2 MG were still within normal range,the activity of nuinary NAG was significantly higher than that in the control.With the aggravation of the kidney injury,the activity of NAG tended to be obviously increased,There were significant correlations among the activity of NAG and the contents of protein or β 2 MG in urine.The resutlts suggested that urinary NAG might be an e...
