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Related Experiment Videos

Familial hyperglycerolemia.

C I Rose, D S Haines

    The Journal of Clinical Investigation
    |January 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    This study identifies a rare genetic disorder causing elevated serum glycerol levels and increased urinary glycerol excretion. The defect lies in glycerol metabolism within leukocytes, suggesting an X-linked recessive inheritance pattern.

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    Area of Science:

    • Biochemistry
    • Human Genetics
    • Metabolic Disorders

    Background:

    • Glycerol is a key metabolic intermediate, but its regulation is not fully understood.
    • Genetic defects in glycerol metabolism can lead to significant health issues.

    Observation:

    • A patient presented with markedly elevated serum free glycerol (75 mg/dl) and high urinary glycerol excretion (13 g/24h), increasing during fasting.
    • In vitro studies using patient leukocytes showed a near-complete absence of glycerol oxidation and phosphorylation.
    • Leukocyte homogenates exhibited negligible glycerokinase activity (EC 2.7.1.30).

    Findings:

    • Identified a novel genetic defect in glycerol metabolism characterized by impaired glycerol oxidation and phosphorylation.
    • Demonstrated negligible glycerokinase enzyme activity in affected individuals' leukocytes.

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  • Observed hyperglycerolemia and excessive urinary glycerol loss as key biochemical markers.

    • Implications:

    • This discovery sheds light on a rare metabolic disorder affecting glycerol homeostasis.
    • The findings suggest an X-linked recessive inheritance pattern for this glycerol metabolism defect.
    • Potential links between glycerol metabolism and diabetes mellitus prevalence in affected families warrant further investigation.