|
KMID : 0371019980310030449
|
|
Journal of Preventive Medicine and Public Health
1998 Volume.31 No. 3 p.449 ~ p.459
|
|
|
LIPID PEROXIDATION AND ANTIOXIDANTS IN WORKERS EXPOSED TO LEAD
|
|
Lee Won-Jin
Hwang Cheon-Hyun
Kim Cheoug-Sik
Chang Soung-Hoon
Kim Yang-Ho
Kim Hae-Joon
|
|
|
Abstract
|
|
|
This study was started to find out if plasma malondialdehyde(MDA), α-tocopherol and erythrocyte superoxide dismutase(SOD) activity could be markers of biological activity resulting from exposed to lead in workers. Blood samples were randomly obtained from lead -exposed workers(n=29), CO2 welders(n=60) and office workers(n=60). We used whole blood to analyse blood lead with atomic absorption spectrophotometer. Superoxide dismutase activity in erythrocyte was measured with spetrophotometer. MDA and α-tocopherol in plasma were measured with high performance liquid chromatography.
Lead-exposed workers was significantly high in blood lead concentration(29.37 ㎍/㎗) compared with welders(6.42 ㎍/㎗) and office workers(5.01 ㎍/㎗). The level of plasma MDA was significantly higher in the lead-exposed workers(1.87 μ㏖/g cholesterol) than the welders(1.41 μ㏖/g cholesterol) and office workers(1.41 μ㏖/g cholesterol). Erythrocyte SOD activity in lead-exposed workers(56.80 U/g Hb) was significantly increased than those of welders(37.63 U/g Hb) and office workers(20.47 U/g Hb). The plasma α-tocopherol level of lead-exposed workers(4.93 ㎍/g cholesterol) was statistically different from welders(4.25 ㎍/g cholesterol) and office workers(4.28 ㎍/g cholesterol). Neither age nor smoking was related to SOD or MDA level. Blood lead was significantly correlated with erythrocyte SOD activity(r=0.405), plasma MDA(r=0.296) and α-tocopherol(r=0.207). Plasma MDA was also significantly correlated with SOD (r=0.217). In multiple regression analysis, the change of MDA and SOD activity level related to the blood lead concentration.
These results suggested that the increase of plasma MDA and erythrocyte SOD activity in lead-exposed workers had a close relationship with the oxidative stress induced by lead.
|
|
|
KEYWORD
|
|
|
Blood lead, MDA, SOD, α-tocopherol
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
  
|