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Elevated umbilical cord blood leukocyte cyclic adenosine monophosphate-phosphodiesterase activity in children with
Insights
Elevated cyclic adenosine monophosphate-phosphodiesterase (cAMP-PDE) activity in newborn blood may predict atopic disease development. This finding suggests a potential biomarker for early identification of infants at risk for allergies.
Area of Science:
- Immunology
- Biochemistry
- Pediatrics
Background:
- Atopic diseases, such as eczema and asthma, represent a significant health burden.
- Early identification of infants at risk for atopic diseases is crucial for timely intervention.
- Cyclic adenosine monophosphate-phosphodiesterase (cAMP-PDE) is an enzyme involved in cellular signaling pathways.
Purpose of the Study:
- To investigate the association between cord blood cyclic adenosine monophosphate-phosphodiesterase (cAMP-PDE) activity and the risk of developing atopic diseases.
- To determine if elevated cAMP-PDE activity in newborns can serve as a predictive marker for atopic conditions.
Main Methods:
- Measurement of cAMP-PDE activity in umbilical cord blood mononuclear leukocytes from newborns.
- Comparison of cAMP-PDE activity between infants with one or two atopic parents and those with nonatopic parents.
- Follow-up evaluation of infants to assess the development of atopic features.
Main Results:
- Significantly elevated cAMP-PDE activity was observed in cord blood leukocytes of infants with one or two atopic parents compared to those with nonatopic parents.
- Elevated cAMP-PDE activity was noted even when only the father had a history of atopy, ruling out transplacental enzyme transfer.
- Follow-up indicated that infants with higher newborn cAMP-PDE activity had an increased likelihood of developing dermatitis and other atopic features.
Conclusions:
- Newborn umbilical cord blood mononuclear leukocyte cAMP-PDE activity is significantly higher in infants with a parental history of atopy.
- Elevated cord blood cAMP-PDE activity may be a predictive marker for the development of atopic diseases in infants.
- Further long-term studies are warranted to confirm the predictive value of this biomarker.
Abstract:
We found cyclic adenosine monophosphate-phosphodiesterase (cAMP-PDE) activity to be significantly elevated in the umbilical cord blood mononuclear leukocytes of forty-two children with one atopic parent (3.2 +/- 0.3) and in eighteen children with two atopic parents (4.2 +/- 0.7) as compared to twenty-two children with two nonatopic parents (1.9 +/- 0.2) (p less than 0.005). Among those newborns with one atopic parent, mean PDE activities were significantly elevated in cord blood cells regardless of whether only the father was atopic, thus eliminating the possibility of transplacental enzyme passage. Follow-up evaluations of twenty-four children, age 6 months or older, suggest that infants with elevated PDE activity at birth have an increased likelihood of developing dermatitis and/or "atopic features." Further long-term studies will determine the predictive value of newborn mononuclear leukocyte PDE activity.