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Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo
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Optic nerve atrophy in adrenoleukodystrophy detectable by optic coherence tomography.

Brian T Grainger1, Taras L Papchenko, Helen V Danesh-Meyer

  • 1Department of Ophthalmology, Faculty of Medical and Health Sciences, Private Bag 92019, University of Auckland, Auckland Mail Centre, Auckland 1142, New Zealand.

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
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Adrenoleukodystrophies (ALDs) cause very long-chain fatty acid buildup. Ocular coherence tomography reveals retinal nerve fiber layer thinning and ganglion cell loss in adult-onset AMN, explaining visual dysfunction.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Metabolic Disorders

Background:

  • Adrenoleukodystrophies (ALDs) are metabolic disorders characterized by very long-chain fatty acid accumulation.
  • Common ALD phenotypes include childhood cerebral ALD and adult-onset adrenomyeloneuropathy (AMN).
  • Visual impairment in adult ALD involves optic nerve demyelination, but retinal changes were primarily described in neonatal forms.

Observation:

  • This study investigated visual dysfunction in a patient with adult-onset AMN.
  • Ocular coherence tomography (OCT) was used to examine the retinal structure.
  • The patient presented with visual impairment characteristic of the AMN phenotype.

Findings:

  • OCT imaging revealed significant thinning of the retinal nerve fiber layer (RNFL).
  • Evidence of ganglion cell loss was also observed in the patient's retina.
  • These degenerative changes in the retina correlate with the visual dysfunction observed in AMN.

Implications:

  • The findings suggest that retinal neurodegeneration is a key feature of visual impairment in adult-onset AMN.
  • OCT may serve as a valuable diagnostic tool for assessing visual system involvement in ALD.
  • Understanding these retinal changes can lead to improved monitoring and potential therapeutic strategies for ALD patients.