Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice.

Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice. Research Abstract Details 

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Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice. Abstract Text:

Jin Xu,Ling-Jun Lian,Chen Wu,Xiao-Feng Wang,Wen-Yu Fu,Li-Hong Xu,

Oxidative stress is considered as a possible molecular mechanism involved in lead toxicity. This study was carried out to investigate whether lead acetate could induce oxidative stress in mice, and the following damages as well. Lead acetate was given orally to mice for 4 weeks at doses of 0, 10, 50, 100mg/kg body weight every other day, respectively. Production of reactive oxygen species (ROS) and malondialdehyde (MDA) were measured as indicators of oxidative stress. DNA damage in peripheral blood lymphocytes was determined by comet assay. Ultrastructure alteration was detected using transmission electron microscopy. The alterations of p53, Bax, and Bcl-2 expression were determined by western blotting. The results showed that lead acetate significantly increased the levels of ROS and MDA in mice. Meanwhile, severe DNA damage and ultrastructure alterations were obviously observed. In addition, p53 and Bax expressions increased and the imbalance of Bax/Bcl-2 occurred. Therefore, it strongly suggests that lead may induce oxidative stress and change the expressions of apoptosis-related proteins in mouse liver.

Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice. Publishing Authors By Initials

J Xu,LJ Lian,C Wu,XF Wang,WY Fu,LH Xu,

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Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Food and chemical toxicology : an international jo

VOLUME: 46

Page Numbers: 1488-94

Journal Abbreviation: Food Chem. Toxicol.

ISSN: 0278-6915

DAY: 23

MONTH: 12

YEAR: 2007

Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Lead induces oxidative stress, DNA damage and alteration of p53, Bax and Bcl-2 expressions in mice.

AFFILIATION: Department of Biochemistry and Genetics, School of Medicine, Zhejiang University, 388 Yu-hang-tang Road, Hangzhou 310058, Zhejiang, PR China.

Country: England

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MEDLINETA: Food Chem Toxicol

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