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Hypothalamic digoxin-mediated model for subacute sclerosing panencephalitis.

Ravi Kumar Kurup1, Parameswara Achutha Kurup

  • 1Dept. of Neurology, Medical College, Trivandrum, Kerala, India.

Journal of Neurovirology
|August 6, 2002
PubMed
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Subacute sclerosing panencephalitis (SSPE) involves an upregulated isoprenoid pathway and increased digoxin synthesis, particularly in individuals with right hemispheric dominance. This suggests hypothalamic digoxin plays a role in SSPE pathogenesis.

Area of Science:

  • Biochemistry
  • Neuroscience
  • Metabolic Pathways

Background:

  • Subacute sclerosing panencephalitis (SSPE) is a rare, progressive neurological disorder.
  • The role of the isoprenoid pathway and endogenous digoxin in SSPE pathogenesis is not fully understood.
  • Hemispheric dominance may influence metabolic patterns.

Purpose of the Study:

  • To investigate the isoprenoid pathway, including endogenous digoxin, in patients with SSPE.
  • To compare these findings with patients exhibiting right, left, or bihemispheric dominance.
  • To elucidate the potential pathogenetic role of hypothalamic digoxin in SSPE.

Main Methods:

  • Assessed plasma levels of HMG CoA reductase, digoxin, dolichol, ubiquinone, and magnesium.
  • Analyzed tryptophan/tyrosine catabolic patterns, free-radical metabolism, and glycoconjugate metabolism.

Related Experiment Videos

  • Examined membrane composition and Na(+)-K(+) ATPase activity in red blood cells (RBCs).

    • Main Results:

    • The isoprenoid pathway was upregulated with increased digoxin synthesis in SSPE and right hemispheric dominance groups.
    • Patients with SSPE and right hemispheric dominance showed increased tryptophan catabolites, elevated dolichol and glycoconjugate levels, reduced lysosomal stability, low ubiquinone, increased free radicals, and altered membrane composition.
    • Left hemispheric dominance exhibited reverse metabolic patterns.

    Conclusions:

    • The upregulated isoprenoid pathway and hypothalamic digoxin are implicated in the pathogenesis of SSPE.
    • SSPE appears to occur in individuals with right hemispheric chemical dominance.
    • A pathogenetic model for SSPE involving hypothalamic digoxin is proposed.