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Related Experiment Videos

Alkaptonuria caused by compound heterozygote mutations.

N H Elçioğlu1, A F Aytuğ, C R Müller

  • 1Department of Pediatric Genetics, Marmara University Hospital, Istanbul, Turkey. nelcioglu@gmx.de

Genetic Counseling (Geneva, Switzerland)
|July 23, 2003
PubMed
Summary

Alkaptonuria, a rare metabolic disorder, involves pigment deposition due to a homogentisic acid oxidase enzyme deficiency. This case highlights a unique adult-onset presentation and novel mutations in the Turkish population.

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Area of Science:

  • Biochemistry
  • Genetics
  • Metabolic Disorders

Background:

  • Alkaptonuria is a rare autosomal recessive metabolic disorder.
  • It results from a deficiency in the homogentisic acid oxidase enzyme, crucial for tyrosine and phenylalanine catabolism.
  • This deficiency leads to the deposition of ochronotic pigment in connective tissues.

Observation:

  • Presents a case of compound heterozygote alkaptonuria.
  • The patient exhibited adult-onset manifestations without prior infantile or childhood signs.
  • This presentation is unusual for alkaptonuria.

Findings:

  • Identifies specific mutations causing alkaptonuria in a patient.
  • These mutations are reported for the first time in the Turkish population.

Related Experiment Videos

  • Characterizes the genetic basis of alkaptonuria in this cohort.

    • Implications:

    • Expands the known spectrum of alkaptonuria mutations.
    • Provides insights into genotype-phenotype correlations in metabolic disorders.
    • Contributes to the understanding of rare diseases in specific ethnic groups.