Effect of chronic primidone treatment on folate-dependent one-carbon metabolism in the rat |
| |
| Authors: | G F Carl M W Gill R A Schatz |
| |
| Affiliation: | 1. Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan;2. Department of Dermatology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan;3. Department of Dermatology, Kyoto City Hospital, Kyoto, Japan;4. Department of Respiratory Medicine, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan |
| |
| Abstract: | ![]()
Rats were treated chronically with primidone (100 mg/kg/12 hr, p.o.) for up to 8 weeks. The effects of this treatment on one-carbon metabolism were determined in brain and liver. Serine hydroxymethyltransferase activity increased in both brain (44%) and liver (50%). Methylenetetrahydrofolate reductase activity increased in liver (26%) with a significant correlation to the length of treatment, but in brain it was unchanged. Methyltetrahydrofolate:homocysteine methyltransferase activity increased in brain (43%) with a significant correlation to length of treatment, but in liver no effect was observed. Methionine adenosyltransferase activity in brain was significantly lower than control at only one point after 8 weeks of chronic treatment. S-Adenosylmethionine concentration in liver increased gradually (23%) during treatment. S-Adenosylhomocysteine concentrations decreased in brain (33%) and increased in liver (23%) with chronic primidone treatment. These data support the hypothesis that chronic primidone treatment leads to folate depletion through interference with folate metabolism. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
