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Hereditary deficiency of vitamin K-dependent coagulation factors with skeletal abnormalities
1Department of Paediatrics, Hadassah University Hospital, Mt. Scopus, Jerusalem, Israel.
Insights
A newborn experienced severe bleeding due to a vitamin K deficiency. Vitamin K treatment corrected clotting factors but did not improve associated bone abnormalities, suggesting a complex genetic interaction.
Area of Science:
- Biochemistry
- Pediatrics
- Genetics
Background:
- Hereditary vitamin K deficiency can cause severe bleeding disorders in infants.
- Skeletal abnormalities, including epiphyseal stippling and phalangeal shortening, can occur in conjunction with coagulation factor deficiencies.
Observation:
- A female infant presented with intracranial hemorrhage and was diagnosed with a deficiency in vitamin K-dependent coagulation factors.
- Mild stippling of the left femoral epiphysis and distal phalangeal shortening were noted in the infant.
Findings:
- Treatment with high-dose vitamin K normalized the levels of vitamin K-dependent clotting factors.
- Vitamin K therapy had no discernible effect on the infant's skeletal abnormalities.
Implications:
- This case highlights the distinct genetic or developmental pathways influencing coagulation and skeletal development.
- Further research is needed to elucidate the relationship between vitamin K metabolism, peroxisomal function, and skeletal anomalies.
Abstract:
We describe a female infant who presented with severe intracranial bleeding and was found to have a hereditary deficiency of vitamin K-dependent coagulation factors. She also had mild stippling of the left femoral epiphysis and shortness of the distal phalanges of the fingers. We studied the possible relationship between these abnormalities and a peroxisomal defect and followed their responses to treatment with vitamin K. The level of vitamin K-dependent clotting factors returned to near-normal following treatment with pharmacological doses of vitamin K, but there was no effect on the skeletal abnormalities.