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Related Experiment Videos

Ocular involvement in histidinaemia.

S P Dhir1, M W Shisku, A Krewi

  • 1Department of Ophthalmology, Al-Fateh University, Tripoli, Libya.

Ophthalmic Paediatrics and Genetics
|November 1, 1987
PubMed
Summary

This study reports two siblings with histidinaemia, a metabolic disorder. Diagnosis was confirmed via amino acid analysis of urine, identifying the cause of their visual and neuromuscular symptoms.

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Area of Science:

  • Medical Genetics
  • Biochemistry
  • Neurology

Background:

  • Histidinaemia is an inborn error of histidine metabolism.
  • Genetic disorders can manifest with complex neurological and visual symptoms.

Observation:

  • Two siblings presented with reduced visual acuity.
  • Neuromuscular symptoms included nystagmus, head nodding, and dysarthria.
  • Ocular findings revealed hypopigmentation of the maculae.

Findings:

  • Amino acid analysis of urine confirmed histidinaemia in both patients.
  • This metabolic disorder is linked to the observed clinical presentation.

Implications:

  • Early diagnosis of histidinaemia is crucial for managing associated symptoms.
  • Understanding the metabolic basis of neurological and visual impairment is vital.
  • Further research into histidine metabolism disorders can improve patient outcomes.

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