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. 2023 Jun;55(6):789-798.
doi: 10.1007/s00726-023-03269-2. Epub 2023 Jun 13.

Age-associated polyamines in peripheral blood cells and plasma in 20 to 70 years of age subjects

Manuel Sánchez #  1   2   3 , Lorena Suárez #  4   5   6 , Gabriela Banda  4 , Eva Barreiro-Alonso  5   6   7 , Ignacio Rodríguez-Uña  8 , José Manuel Rubín  6   9 , Begoña Cantabrana  4   5   6
Affiliations

Age-associated polyamines in peripheral blood cells and plasma in 20 to 70 years of age subjects

Manuel Sánchez et al. Amino Acids. 2023 Jun.

Abstract

Dietary polyamines have been associated with slowing ageing processes and various pathologies, raising the importance of establishing reference values at different ages throughout life. This study aimed to analyse age-dependent variations in polyamine content using peripheral blood cells and plasma in a healthy and homogeneous population. Peripheral blood of 193 volunteers of both sexes (20-70 years), selected by convenience, was processed to separate cells and plasma. A pre-column derivatization method was used to determine the amines by HPLC (nmol or pmol/mg protein or nmol/ml) to analyse their association with the age (continuous or ordinal in decades) of the subjects. Putrescine and spermine weakly declined significantly in mononuclear cells with age. In erythrocytes and plasma, putrescine showed an evident decrease in the 60-70-year-old group compared to the rest. The ratios between polyamines, mainly in erythrocytes, decreased in the 60-70 years age group and increased the ratio of putrescine in mononuclear cells/erythrocytes. The ratio of putrescine in mononuclear cells/erythrocytes was higher in the 60-70-year-old age group than in the rest. In a sample of subjects (20-29 vs. 60-70 years), whole blood polyamines were not significantly different when differences existed in erythrocytes. Polyamine homeostasis in blood cells and plasma changed with age. Putrescine declined in mononuclear cells and decreased in erythrocytes and plasma in the decade of the 60 s. Further studies should establish an age-dependent phenotype and whether polyamines' supplementation could restore the decreased values and be associated with long-term overall biological benefits.

Keywords: Age; Human peripheral blood; Polyamines; Putrescine; Spermidine; Spermine.

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Conflict of interest statement

The authors have no conflicts of interest to declare.

Figures

Fig. 1
Fig. 1
Polyamines content in samples of cells and plasma of peripheral blood. Linear plots and fittings (dotted lines) of the values (nmol/mg of protein) of putrescine (a), spermidine (b) and spermine (c) vs. the participants’ age and box-and-whisker plots regarding the age by decades in the mononuclear cells, erythrocytes, and plasma; *P < 0.05 and **P < 0.01 by comparison with the group of 60–70 years of age; $p ≤ 0.05 and $$p ≤ 0.01 by comparison with the group of 20–29 years, using Kruskal–Wallis test
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