Adenine nucleotide system in adult and old rat liver during immobilization stress

: Adenine nucleotide and inorganic phosphate concentrations were studied in livers of adult (10-12 month) and old (22-25 month) Wistar male rats during immobilization stress. Study revealed that level of liver energy provision supply of old rats was lower than in adults. Stress caused reduction of adenine nucleotide concentration in the liver of both adult and old animals.