Document Detail


Effects of B2-deficiency on lipoperoxide and its scavenging system in the rat lens.
MedLine Citation:
PMID:  6421765     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The level of NADPH-cytochrome c reductase, glutathione reductase and hepatic B2 was significantly decreased in rats fed a B2-deficient diet. The synthesis of ester forms of B2 was decreased more in the lenses of rats fed this diet for 8 weeks than in those fed this diet for 4 weeks. The glutathione reductase activity in the lens decreased as the duration of a B2-deficient diet increased; this may be ascribable to a decrease in the formation in the lenticular riboflavin ester as a coenzyme. The level of lipid peroxides increased in the serum and lenses of rats on the B2-deficient diet, however, compared to the controls, the changes in the activities of superoxide dismutase and glutathione S-transferase were not significant. Lenticular glutathione peroxidase activity was decreased significantly in rats fed the B2-deficient diet for 8 weeks. We suggest that B2 deficiency brings about metabolic disorders in the redox system to maintain lens transparency, that lipoperoxide is accumulated, and that the efficiency of the scavenging system and the activities of glutathione peroxidase and reductase are decreased.
Authors:
H Hirano; S Hamajima; S Horiuchi; Y Niitsu; S Ono
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition     Volume:  53     ISSN:  0300-9831     ISO Abbreviation:  Int J Vitam Nutr Res     Publication Date:  1983  
Date Detail:
Created Date:  1984-04-26     Completed Date:  1984-04-26     Revised Date:  2007-02-21    
Medline Journal Info:
Nlm Unique ID:  1273304     Medline TA:  Int J Vitam Nutr Res     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  377-82     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Glutathione Reductase / metabolism
Lens, Crystalline / enzymology,  metabolism*
Lipid Peroxides / blood,  metabolism*
Liver / metabolism
Male
NADPH-Ferrihemoprotein Reductase / metabolism
Oxidation-Reduction
Rats
Rats, Inbred Strains
Riboflavin / metabolism
Riboflavin Deficiency / metabolism*
Chemical
Reg. No./Substance:
0/Lipid Peroxides; 83-88-5/Riboflavin; EC 1.6.2.4/NADPH-Ferrihemoprotein Reductase; EC 1.8.1.7/Glutathione Reductase

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


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