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Effects of riboflavin in children with complex II deficiency

Marianna Bugiani1, Eleonora Lamantea, Federica Invernizzi

  • 1Department of Child Neurology, Istituto Nazionale Neurologico C. Besta, Milano, Italy. mbugiani@istituto-besta.it

Brain & Development
|June 2, 2006
PubMed

Insights

Riboflavin treatment shows promise for children with complex II deficiency, a rare mitochondrial disease. Supplementation stabilized or improved neurological conditions and reduced lactate levels in patients, suggesting a potential therapeutic approach.

Area of Science:

  • Biochemistry
  • Pediatric Neurology
  • Mitochondrial Medicine

Background:

  • Isolated complex II deficiency is a rare, progressive mitochondrial disease in children.
  • Current treatments are lacking, leading to severe motor and mental deterioration.
  • Mitochondrial dysfunction impacts cellular energy production and overall health.

Purpose of the Study:

  • To investigate the efficacy of riboflavin as a treatment for isolated complex II deficiency.
  • To assess the impact of riboflavin on neurological status and metabolic markers in affected children.
  • To evaluate the effect of riboflavin on complex II activity in patient-derived cells.

Main Methods:

  • Case series of three children with complex II deficiency treated with oral riboflavin.
  • Longitudinal follow-up for a mean of 4.5 years, monitoring neurological and growth parameters.
  • Biochemical analysis of plasma lactate levels and in vitro study of riboflavin's effect on fibroblast complex II activity.

Main Results:

  • Two patients with leukoencephalopathy showed stable or improved neurological conditions.
  • The third patient experienced decreased plasma lactate levels and no neurological decline.
  • Riboflavin increased complex II activity in cultured patient fibroblasts, but not in controls.

Conclusions:

  • Riboflavin supplementation may be a beneficial treatment for isolated complex II deficiency.
  • Early intervention with riboflavin could potentially halt or reverse disease progression.
  • Further research is warranted to confirm riboflavin's therapeutic role in this condition.

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