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Updated: May 1, 2026

Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Propionylcarnitine and methionine concentrations in newborns with hypospadias
Andrzej Kowal1, Dariusz Mydlak1, Mariusz Ołtarzewski2
1Department of Pediatric Surgery.
Insights
Increased propionylcarnitine, a marker for vitamin B12 deficiency, was found in newborns with hypospadias. This suggests a link between low vitamin B12 levels and hypospadias risk.
Area of Science:
- Biochemistry
- Pediatrics
- Nutritional Science
Background:
- Maternal diet may influence hypospadias risk.
- Elevated propionylcarnitine (C3) indicates vitamin B12 deficiency.
- Hypospadias is a common congenital anomaly in male newborns.
Purpose of the Study:
- To investigate the association between elevated propionylcarnitine and methionine levels in newborns and hypospadias.
- To explore the potential role of vitamin B12 deficiency in hypospadias etiology.
Main Methods:
- Retrospective study of 41 newborns with hypospadias and 90 controls.
- Tandem mass spectrometry used to measure whole blood propionylcarnitine and methionine concentrations.
Main Results:
- Newborns with hypospadias showed significantly higher mean propionylcarnitine levels (p = 0.026).
- Methionine levels were insignificantly lower in the hypospadias group compared to controls.
Conclusions:
- An association exists between increased propionylcarnitine, indicating vitamin B12 deficiency, and hypospadias.
- This finding suggests a potential link between maternal vitamin B12 status and hypospadias development.
Introduction:
Of interest is if factors like maternal diet can influence the risk of hypospadias-affected pregnancy. Increased propionylcarnitine (C3) is regarded as a biomarker of vitamin B12 deficiency. The retrospective study was undertaken to determine whether increased propionylcarnitine and low methionine in newborns are associated with hypospadias.
Material And Methods:
41 newborns with hypospadias and 90 control newborns without congenital anomalies were investigated. Whole blood propionylcarnitine and methionine concentrations were measured using tandem mass spectrometry.
Results:
The mean concentration of propionylcarnitine was higher in newborns with hypospadias compared with newborns without congenital anomalies (p = 0.026). The mean methionine level in cases was insignificantly lower than in controls.
Conclusion:
There appears to be an association between decreased vitamin B12, as indexed by an increase of propionylcarnitine, and hypospadias in the investigated group of patients.
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