A Study on the Activity of Erythrocyte Pryrimidine 5'-Nucleotidase in Workers Exposed to Lead.
- Author:
Soung Hoon CHANG
1
;
Yong Tae YUM
Author Information
1. Department of Preventive Medicine, College of Medicine, Kon-Kuk University, Korea.
- Publication Type:Original Article
- Keywords:
Lead exposure;
Pyrimidine 5'-nucleotidase;
Lead biological indices
- MeSH:
5'-Nucleotidase*;
Chromatography, Liquid;
Erythrocytes*
- From:Korean Journal of Occupational and Environmental Medicine
1994;6(1):85-97
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
In this study, we measured the activity of the erythrocyte pyrimidine 5'-nucleotidase(P5N) for 83 workers exposed to lead in their workplace, and analyzed the correlation of the activity with other biological exposure indices of lead. The measurement was performed by using a high performance liquid chromatography (HPLC) with a reverse phased ODS column. The results are as follows; 1. The correlation of the erythrocyte P5N activity with the concentration of blood lead(PbB) was shown to be statistically significant (r=-0.71, p=0.0001). 2. For a group of subjects whose PbB was less than 10microgram/dl, the erythrocyte P5N activity was 14.9+/-1.5 micromole uridine/h/g Hb. 3. For medical surveillance, this study suggests the erythrocyte P5N activity of 12 micromole uridine/h/g Hb is equivalent to 40 microgram/dl of PbB. 4. The correlation coefficients of the erythrocyte P5N activity with other biological exposure indices of lead such as PbB, ZPP, ALA-U, PBU, CP-U, ALAD, and log ALAD were -0.71, -0.64, -0.57, -0.51, -0.50, 0.46 and 0.64, respectively. 5. The correlation coefficients of the PbB with other biological exposure indices of lead for ALAD, P5N, ZPP, PBU, CP-U, and ALA-U were -0.76, -0.71, 0.68, 0.59, 0.42, and 0.41, respectively. The erythrocyte P5N activity can be used as a reliable biological exposure index of lead.
