Abstract
The cerebral ODC/polyamine system is disturbed by brain injury. The main modifications are important increases in ODC activity and putrescine concentration, with minor variations in spermidine and spermine concentrations. A great diversity of stimuli such as cerebral ischemia or overstimulation of the central nervous system by chemical or non-chemical agents can induce polyamine disturbances. Both the contribution of polyamines to the brain damage and their involvement in the repair mechanisms triggered after brain insults have been proposed.
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