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Propionic acidaemia presenting with pancytopaenia in infancy.

L Sweetman, W L Nyhan, J Cravens

    Journal of Inherited Metabolic Disease
    |January 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

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    Propionic acidaemia, a metabolic disorder, caused pancytopaenia in an infant by inhibiting bone marrow cell maturation. This condition involves defective propionyl-CoA carboxylase activity and abnormal organic acid levels.

    Area of Science:

    • Biochemistry
    • Genetics
    • Pediatrics

    Background:

    • Propionic acidaemia is an inherited metabolic disorder.
    • It is caused by a deficiency in the enzyme propionyl-CoA carboxylase.

    Observation:

    • A 2-month-old infant presented with vomiting, lethargy, and pancytopaenia.
    • Defective propionyl-CoA carboxylase activity was identified in cultured fibroblasts.
    • Elevated levels of various organic acids were detected in body fluids.

    Findings:

    • The infant was diagnosed with propionic acidaemia (McKusick 23200).
    • Accumulation of specific organic acids including glycine, 3-hydroxypropionate, and methylcitrate was observed.
    • A correlation between organic acidaemia and impaired bone marrow cell maturation was suggested.

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    Implications:

    • This case highlights the severe hematological consequences of propionic acidaemia in infants.
    • Understanding the biochemical pathway is crucial for diagnosing and managing this rare metabolic disorder.
    • Further research into the mechanism of bone marrow suppression in organic acidaemias is warranted.