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Intrauterine growth: association with acid phosphatase genetic polymorphism
A Amante1, F Gloria-Bottini, E Bottini
1Division of Biometry and Human Development, 2nd University of Rome, School of Medicine, Italy.
Insights
Genetic variations in acid phosphatase (ACP1) influence intrauterine growth, particularly in males. Lower ACP1 enzyme activity is linked to higher birth weight, suggesting a role in fetal development.
Area of Science:
- Biochemistry
- Human Genetics
- Developmental Biology
Background:
- Acid phosphatase (ACP1) is a cytoplasmic enzyme with potential flavin mononucleotide-phosphatase activity.
- ACP1 enzyme activity varies across different phenotypes, influencing cofactor concentrations and metabolic activities.
- Genetic variability in ACP1 may impact fetal development and birth outcomes.
Purpose of the Study:
- To investigate the association between genetic variability of acid phosphatase (ACP1) and intrauterine growth.
- To determine if ACP1 phenotypes correlate with birth weight in a newborn cohort.
- To explore potential sex-specific effects of ACP1 on fetal growth.
Main Methods:
- Analysis of ACP1 phenotypes in a sample of 609 newborns from Rome.
- Statistical assessment of the relationship between ACP1 activity and birth weight.
- Examination of correlations between enzymatic activity, quartile class, and infant sex.
Main Results:
- A significant association was observed between ACP1 and birth weight, primarily in male infants.
- ACP1 phenotypes with lower enzymatic activity (A and BA) exhibited a tendency towards higher intrauterine growth rates.
- A negative linear correlation between ACP1 enzymatic activity and quartile class was significant in males.
Conclusions:
- ACP1 genetic variability plays a role in modulating intrauterine growth, with implications for birth weight.
- Low ACP1 activity in male fetuses may facilitate enhanced metabolic regulation for optimal fetal growth.
- These findings highlight the influence of specific enzyme activity on developmental trajectories.
Abstract:
Acid phosphatase (ACP1) is an enzyme found in the cytoplasm of many tissues and probably functions as a flavin mononucleotide-phosphatase. Therefore the highest concentration of flavin-mononucleotide cofactors is expected in ACP1 phenotypes with the lowest enzymatic activity (A and BA) and the lowest concentration of these cofactors is expected in phenotypes with the highest activity (CB and C). Accordingly, metabolic activities related to flavoenzymes should attain maximal levels in A and BA phenotypes and minimal levels in CB and C phenotypes. In the present study we have analyzed possible effects of ACP1 genetic variability on intrauterine growth in a sample of 609 newborns collected from three consecutive series in Rome. An association between ACP1 and birth weight is observed. The association is present only among male infants. ACP1 phenotypes with low enzymatic activity (A and BA) show a clear tendency to higher rates of intrauterine growth. A linear negative correlation is also observed between enzymatic activity and quartile class. The relation is significant only in male infants. The data suggest that in fetuses with low ACP1 activity, metabolic activity may be regulated at a level allowing a full response to specific genetic stimuli maximizing fetal growth.