Document Detail

Ascorbic acid reduces the frequency of iron induced micronuclei in bone marrow cells of mice.
MedLine Citation:
PMID:  14644358     Owner:  NLM     Status:  MEDLINE    
Iron is a potent oxidant that can lead to the formation of genotoxic lipid peroxides. Ascorbic acid, which enhances dietary iron absorption, has been suggested to enhance the oxidant effects of iron and to directly lead to the formation of lipid peroxides. The combined effects of dietary iron and ascorbic acid on genotoxicity were investigated by measuring the frequency of micronuclei in the bone marrow cells of C3H/He mice. In addition, liver iron concentration was measured in all treated groups. Three weeks old mice were fed diets for 3 weeks containing iron at 100 or 300 mg/kg diet in the form of FeSO(4) that were supplemented either with or without ascorbic acid (15 g/kg diet). The results of the bone marrow micronucleus test revealed that the high iron diet resulted in an increased frequency of micronucleated polychromatic erythrocytes (MnPCEs) as compared to low iron. Ascorbic acid supplementation in the low iron diet did not show any effect on incidence of MnPCEs and protected against the increased frequency of MnPCEs induced by the high iron diet. However, liver iron concentration was significantly increased only in the high iron treated and ascorbic acid supplemented group as compared to all other groups. These results demonstrate that ascorbic acid protects against the clastogenic effects of iron.
Kumpati Premkumar; Christopher L Bowlus
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Mutation research     Volume:  542     ISSN:  0027-5107     ISO Abbreviation:  Mutat. Res.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-03     Completed Date:  2004-01-29     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0400763     Medline TA:  Mutat Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  99-103     Citation Subset:  IM    
Department of Internal Medicine, University of California Davis Medical Center, Research Building 1, Room 1004, 4635 2nd Avenue, Sacramento, CA 95817, USA.
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MeSH Terms
Administration, Oral
Antioxidants / pharmacology*
Ascorbic Acid / pharmacology*
Bone Marrow Cells / drug effects*
Cyclophosphamide / toxicity
Dose-Response Relationship, Drug
Drug Interactions
Ferrous Compounds / pharmacokinetics,  toxicity*
Liver / drug effects,  metabolism
Mice, Inbred C3H
Micronuclei, Chromosome-Defective
Micronucleus Tests
Mutagens / pharmacokinetics,  toxicity*
Reg. No./Substance:
0/Antioxidants; 0/Ferrous Compounds; 0/Mutagens; 50-18-0/Cyclophosphamide; 50-81-7/Ascorbic Acid; 7720-78-7/ferrous sulfate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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