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Related Experiment Videos

Dilantin digital defects

R B Johnson, L A Goldsmith

    Journal of the American Academy of Dermatology
    |August 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Prenatal exposure to diphenylhydantoin (phenytoin) can cause fetal hydantoin syndrome (FHS). This case report details unusual fingernail hyperpigmentation in an FHS patient, suggesting a novel effect on collagen metabolism.

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    Area of Science:

    • Teratology
    • Developmental Biology
    • Pharmacology

    Background:

    • Diphenylhydantoin (phenytoin) is a commonly prescribed anticonvulsant medication.
    • Phenytoin is associated with numerous adverse effects, including dermatological manifestations.
    • Prenatal exposure to hydantoins can lead to fetal hydantoin syndrome (FHS), characterized by structural, developmental, and behavioral abnormalities.

    Observation:

    • A patient presenting with the characteristic dysmorphic features of FHS exhibited an unusual finding.
    • The patient displayed significant hyperpigmentation of several fingernails.
    • This specific nail finding has not been previously documented in the literature for FHS patients.

    Findings:

    • The case highlights an uncharacteristic manifestation of fetal hydantoin syndrome (FHS).

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  • The observed fingernail hyperpigmentation may represent a novel aspect of the syndrome's phenotypic spectrum.
  • A proposed mechanism links phenytoin's teratogenic effects to alterations in fetal collagen metabolism.

    • Implications:

    • This finding expands the known clinical spectrum of fetal hydantoin syndrome.
    • Understanding the mechanism may inform future research into hydantoin-induced developmental toxicity.
    • Further investigation into the effects of anticonvulsants on fetal development, particularly collagen synthesis, is warranted.