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Extremely high concentration of folates in premature newborns
Insights
Extremely high red blood cell (RBC) folate levels were observed in two premature newborns. Blood transfusions significantly impacted these folate concentrations, highlighting potential metabolic disruptions in neonates.
Area of Science:
- Neonatal Medicine
- Biochemistry
- Hematology
Background:
- Folates are essential water-soluble vitamins crucial for rapid cell growth and metabolic processes.
- Red blood cell (RBC) folate concentration is the most reliable indicator of long-term folate status.
- Optimal RBC folate levels in the neonatal period remain undefined.
Observation:
- This study reports on two premature newborns exhibiting exceptionally high RBC folate concentrations.
- Measurements were taken on the first day of life and again after six weeks.
- The cases highlight the variability and potential for extremely elevated folate levels in this population.
Findings:
- One newborn showed a markedly high RBC folate level (5516.67 ng/ml) after RBC transfusions.
- In the second case, RBC folate levels doubled within 24 hours post-transfusion compared to birth levels.
- These findings suggest blood transfusions can significantly influence RBC folate concentrations in premature infants.
Implications:
- The normal range for RBC folate in newborns is variable, and the upper limit for folic acid intake is unknown.
- In premature neonates, high folate levels may disrupt metabolic balance and slow degradation.
- Further research is needed to elucidate the mechanisms influencing RBC folate levels, particularly the impact of blood transfusions.
Objectives:
Extremely high concentration of folates in premature newborns: case reports.
Background:
Folates are a group of water soluble compounds, which are important for metabolic processes in human body. These are important during periods of rapid cell growth. The most accurate indicator of long-term folate level status in the body is the determination of red blood cell (RBC) folate concentrations. The optimal level of RBC folate is not known in neonatal period. Authors discuss the reasons for extremely high level of RBC folate concentrations.
Methods:
In our work we present the cases of two premature newborns with extremely high level of RBC folate concentrations, which were analyzed immunochemically on the first day of life and after six weeks of life.
Results:
In both cases we measured RBC folate concentrations on the 1st day of life. After 6 weeks we found extremely high RBC folate concentration level (5516.67 ng/ml) in the first case after RBC transfusions. In second case after two months of life the RBC folate concentration level was doubled (2335.1 ng/ml) until 24 hours after RBC transfusion compared to levels after birth.
Conclusion:
The normal range of RBC folate values vary in newborns. The upper limit of daily dose of folic acid in pregnancy and neonatal period is not known. On the other hand it is an easily excreted water-soluble vitamin but in premature newborn it can lead to the disruption of metabolic balance and slow its degradation. Some factors can have an impact on RBC folate concentration. Blood transfusion can be one of the main influences on RBC folate concentration. To clarify these mechanisms further studies are required (Ref. 29).
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