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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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Related Experiment Video

Updated: Jan 11, 2026

An In Vitro Model for the Study of Cellular Pathophysiology in Globoid Cell Leukodystrophy
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Cognitive and intellectual functioning in leukodystrophy patients: a systematic review.

Wietske H M Grol1,2,3, Marjo S van der Knaap1,2,4, Nicole I Wolf1,2

  • 1Department of Child Neurology, Emma's Children's Hospital, Amsterdam UMC, Amsterdam, The Netherlands.

Orphanet Journal of Rare Diseases
|November 11, 2025
PubMed
Summary

Leukodystrophies, genetic white matter disorders, cause cognitive decline. This review highlights that while intelligence and processing speed are often affected, specific cognitive profiles remain unclear, necessitating further research for better patient guidance.

Keywords:
Cognitive functioningIntelligenceLeukodystrophiesNeuropsychological tests

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Area of Science:

  • Neuroscience
  • Genetics
  • Neurology

Background:

  • Leukodystrophies are genetic white matter disorders causing progressive neurological deterioration.
  • Cognitive decline, mood changes, and motor dysfunction are common, potentially leading to underestimation of deficits.
  • Lack of understanding hinders timely interventions and patient guidance.

Conclusions:

  • Cognition and intelligence are affected in leukodystrophies, with information processing speed frequently impaired.
  • Specific cognitive and intellectual profiles remain unclear, hindering effective patient guidance.
  • Further well-designed studies are needed to clarify profiles, inform testing guidelines, and develop outcome measures for therapies.