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Pattern of blood polyamines in healthy subjects from infancy to the adult age
Insights
Blood polyamine levels, including spermidine and spermine, are higher during human growth. These levels peak early in infancy and decrease with age, suggesting a role in cellular proliferation.
Area of Science:
- Biochemistry
- Human Physiology
- Developmental Biology
Background:
- Polyamines are essential for cell growth and proliferation.
- Understanding polyamine dynamics is crucial for developmental studies.
Purpose of the Study:
- To investigate blood polyamine levels in healthy individuals across different life stages.
- To characterize the developmental trajectory of polyamine concentrations from birth to adulthood.
Main Methods:
- Blood samples were collected from 161 healthy subjects.
- Polyamine concentrations (spermidine, spermine) were measured.
- Levels were analyzed across age groups, from newborns to adults.
Main Results:
- Blood spermidine concentrations were consistently higher during growth compared to adulthood.
- A distinct pattern was observed in early life: an initial increase peaking at 24 hours, followed by a gradual decrease.
- Polyamine levels stabilized by 10 days of life and showed a further decline in adulthood.
Conclusions:
- Elevated polyamine levels during human growth suggest a significant role in cellular proliferation.
- The observed developmental pattern of polyamines may be linked to growth and maturation processes.
- These findings contribute to understanding the physiological significance of polyamines in human development.
Abstract:
Blood polyamine levels have been determined in 161 healthy subjects from newborn to adult age. During the growth period spermidine concentrations are always higher than in adulthood. In the first days of life a typical pattern for spermidine and spermine appeared with an early increase in the first hours after birth and a maximum at 24 h; afterwards the levels of both amines gradually and progressively decreased. The levels reached by 10 days of life were maintained until adulthood, at which time a further decrease was evident. The high levels of polyamines during the period of body growth may suggest that also in humans these substances play a role in the process of cellular proliferation.