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American Journal of Clinical Nutrition, Vol 52, 746-751, Copyright © 1990 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Urinary excretion of polyamines: importance of circadian rhythm, age, sex, menstrual cycle, weight, and creatinine excretion

MJ Poyhonen, UM Uusitalo, A Kari, JA Takala, LA Alakuijala and TO Eloranta
Department of Anesthesiology, Kuopio University Central Hospital, Finland.

The urinary excretion of putrescine, spermidine, spermine, and N1- and N8-acetylspermidines was measured in 95 volunteers. The 24-h excretion, split in four consecutive periods, was analyzed for circadian rhythm in eight volunteers. Circadian rhythm was observed in total polyamine and in N1- and N8-acetylspermidine excretions. The excretion rates of these polyamines were highest in the morning. The normal values for 24-h urinary excretion of polyamines were determined in 87 volunteers. Men excreted significantly more spermidine (P less than 0.001), N8- acetylspermidine (P less than 0.05), and spermine (P less than 0.001) than did women; putrescine excretion was higher in women (P less than 0.001). This variation was only partially explained by differences between sexes in body or muscle mass because most differences remained significant even after normalization for creatinine excretion and body weight. No correlation between the polyamine excretions and age or menstrual cycle was found.


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