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Recyclation and Transformation of Homocysteine as a Part of Detoxication Processes in the Cell
Přistoupilová, K. ; Přistoupil, T. ; Šenholdová, Z. ; Navrátil, Tomáš ; Heyrovský, Michael
The presented metabolic pathways explain how the transformation of homocysteine affects the detoxication processes in the human cell. On the one hand homocysteine is recycled to methionine; on the other hand it is transformed to cysteine. Both pathways are connected by B12 vitamin. Their relation to the thiodiglycolic acid (TDGA), which represents a part of the detoxication processes, is demonstrated on the scheme. The changes in TDGA concentration in urine were found to depend on the changes in redox equilibria (of vitamin B12, folic acid, homocysteine). Key Words: Thiodiglycolic acid, TDGA, vitamin B12, folic acid, metabolic pathways, homocysteine, detoxication.
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