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Ophthalmic, Systemic and Genetic Features in Wolfram Syndrome.

Ana Maria Cunha1,2, Sérgio Estrela-Silva1,2, João Barbosa-Breda1,3,4

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Summary
This summary is machine-generated.

Optical coherence tomography angiography (OCTA) revealed reduced ocular microvascular density in Wolfram syndrome (WFS) patients. This suggests microvascular impairment contributes to vision loss and neurodegeneration in this rare genetic disorder.

Keywords:
Wolfram syndromeangiographygenetic featuresmicrovascular impairmentoptic atrophyoptical coherence tomography

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Area of Science:

  • Ophthalmology
  • Genetics
  • Neuroscience

Background:

  • Wolfram syndrome (WFS) is a rare, progressive neurodegenerative disorder with severe systemic and ocular manifestations.
  • Ocular complications in WFS often include optic atrophy and vision impairment, but the underlying microvascular changes are not fully understood.

Purpose of the Study:

  • To quantitatively assess ocular microvascular features in patients with Wolfram syndrome using optical coherence tomography angiography (OCTA).
  • To compare microvascular density in WFS patients with that of healthy controls.

Main Methods:

  • A cross-sectional study involving 11 WFS patients and 18 healthy controls.
  • Spectral Domain OCTA scans of the optic nerve head, peripapillary region, and macula were analyzed.
  • Quantitative analysis of whole-image, inside-disc, and peripapillary vessel density (VD), and macular superficial capillary plexus (SCP) VD.

Main Results:

  • WFS patients exhibited significantly lower whole-image VD, inside-disc VD, and peripapillary VD compared to controls (p < .001).
  • Reduced parafoveal SCP VD was observed in WFS patients, particularly in the nasal, inferior, and superior sectors (p < .001).
  • Optic atrophy and diabetes mellitus were the most prevalent systemic findings in WFS patients.

Conclusions:

  • OCTA demonstrates significant microvascular impairment across all examined ocular regions in Wolfram syndrome.
  • Reduced ocular vessel density in WFS patients suggests a potential contribution of microvascular dysfunction to neurodegeneration and retinal structural changes.
  • OCTA is a valuable tool for evaluating microvascular alterations in WFS, aiding in understanding disease pathogenesis.