Related Experiment Videos
Ocular histopathologic studies of neonatal and childhood adrenoleukodystrophy
Insights
Histopathologic studies reveal bileaflet inclusions in the eyes of patients with childhood and neonatal adrenoleukodystrophy, impacting vision and retinal cells. These findings highlight the ocular manifestations of adrenoleukodystrophy.
Area of Science:
- Ophthalmology
- Neurology
- Genetics
Background:
- Childhood adrenoleukodystrophy (CALD) and neonatal adrenoleukodystrophy (NALD) are peroxisomal disorders.
- These conditions are characterized by demyelination and adrenal insufficiency.
- Ocular involvement in CALD and NALD is not well-documented.
Observation:
- Histopathologic examination of eyes from patients with CALD and NALD was performed.
- Key ocular tissues analyzed included the optic nerve, retina, and retinal pigment epithelium.
- Specific cellular components and pathological changes were documented.
Findings:
- Bileaflet inclusions, characteristic of adrenoleukodystrophy, were observed in optic nerve macrophages, retinal neurons, and macrophages.
- Significant loss of the ganglion cell and nerve fiber layers was noted in all patients.
- In NALD cases, changes resembling early retinitis pigmentosa were present, with inclusions in the retinal pigment epithelium and macrophages.
- Anterior subcapsular cataract and cystoid macular edema were observed in one NALD patient.
Implications:
- These findings underscore the significant ocular pathology associated with adrenoleukodystrophy.
- The presence of bileaflet inclusions and retinal changes suggests a direct impact on visual function.
- Further research into the pathogenesis and potential treatments for ocular manifestations of adrenoleukodystrophy is warranted.
Abstract:
Histopathologic studies of the eyes of one patient (a boy who died at 14 years of age) with childhood adrenoleukodystrophy and two patients (girls who died at 24 and 31 months of age) with neonatal adrenoleukodystrophy showed the accumulation of the characteristic bileaflet inclusions in optic nerve macrophages, retinal neurons, and macrophages and loss of ganglion cell and nerve fiber layer. Additionally, in the two cases of neonatal adrenoleukodystrophy, changes resembling early retinitis pigmentosa were found, with accumulation of characteristic inclusions in the retinal pigment epithelium and pigment-laden macrophages. One of the patients with neonatal adrenoleukodystrophy also had an anterior subcapsular cataract and cystoid macular edema.