title: Age-related changes of cyclic nucleotide levels in rat brain regions.
abstract: Cyclic AMP and cyclic GMP levels were measured in seven brain areas of rats 4-30 months old. In several brain areas cyclic nucleotides were higher in 4-month-old rats than in rats 12 months old or older. On the other hand, in the hypothalamus cyclic GMP levels were decreased only in 30-month-old rats, a pattern of onset similar to that of senile deterioration.
mesh_terms: D000375:Aging; D000818:Animals; D001921:Brain / Q000378:metabolism*; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D008297:Male; D051381:Rats
chemical_list: D000242:Cyclic AMP; D006152:Cyclic GMP