Effects of lead exposure on protein kinase C and calmodulin expression in hippocampus of baby-rats / 中华劳动卫生职业病杂志
Chinese Journal of Industrial Hygiene and Occupational Diseases
; (12): 465-467, 2008.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-315665
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To observe the effect of chronic lead contaminant on protein expression of protein kinase (PKC) and calmodulin (CaM) in hippocampus of baby-rats.</p><p><b>METHODS</b>The Wistar pregnant rats were randomly divided into 3 groups fed with distilled water and lead-contained water (0.2% and 1.0% lead acetate) respectively. The lead exposure period ranged from the 0 day of pregnancy to the offspring weaned. Then the baby-rats were fed with lead water the same as their mothers. Pups were killed at postnatal day 8 and 50 respectively. Atomic absorption spectrometry was used to determine lead content of rats' brain. Western-blotting was used to observe protein expression of PKC and CaM in hippocampus of baby-rats.</p><p><b>RESULTS</b>The brain lead content of test groups was much higher than that of the control group in the same growth period (P < 0.01). The content of brain lead in rats of postnatal day 50 was significantly higher than that of rats of postnatal day 8 (P < 0.01). Compared with control group, PKC and CaM protein expressions of chronic lead exposure baby-rats in the hippocampus were down trend (P < 0.05).</p><p><b>CONCLUSION</b>The decrease of PKC and CaM protein expression level in hippocampus might be one of the molecular mechanisms of lead induced impairment of learning and memory.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Prenatal Exposure Delayed Effects
/
Protein Kinase C
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Calmodulin
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Rats, Wistar
/
Toxicity
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Hippocampus
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Lead
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Metabolism
Limits:
Animals
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Pregnancy
Language:
Chinese
Journal:
Chinese Journal of Industrial Hygiene and Occupational Diseases
Year:
2008
Document type:
Article