The influence of energy restriction and developmental state on DNA 5-methyldeoxycytidine in rat mammary and liver tissues.
1992
Baik M.G. | Choi C.B. | Slanger W.D. | Park C.S.
Female rats were fed either ad libitum or 30% energy-restricted diets from 5 weeks through 25 weeks of age. Genomic DNA was extracted from mammary tissue and liver at 7, 9, 14 (mid-pregnancy), 16.5 (mid-lactation), and 25 weeks of age. The 5-methyldeoxycytidine content of DNA was determined by high pressure liquid chromatography. As animals aged from 7-25 weeks, 5-methyldeoxycytidine increased in mammary tissue, whereas in liver it decreased. This suggests that 5-methyldeoxycytidine exhibits tissue specific patterns. No changes in 5-methyldeoxycytidine content due to 30% energy restriction were observed in either mammary tissue or liver.
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