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Related Experiment Video

Updated: Nov 11, 2025

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons
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[Neuronal Intranuclear Inclusion Disease(NIID)].

Aki Sato1

  • 1Department of Neurology, Niigata City General Hospital.

No Shinkei Geka. Neurological Surgery
|March 25, 2021
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This summary is machine-generated.

Neuronal intranuclear inclusion disease (NIID) is a progressive neurodegenerative disorder. Diagnosis is aided by skin biopsy, with symptoms including dementia and muscle weakness, and characteristic MRI findings.

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Area of Science:

  • Neurology
  • Neurodegenerative Diseases
  • Pathology

Background:

  • Neuronal intranuclear inclusion disease (NIID) is a progressive neurodegenerative condition.
  • It is characterized by eosinophilic hyaline intranuclear inclusions in neuronal and somatic cells.
  • The incidence of NIID has increased since skin biopsy became a diagnostic tool in 2011.

Purpose of the Study:

  • To summarize the key features of Neuronal intranuclear inclusion disease (NIID).
  • To highlight diagnostic advancements and clinical manifestations.
  • To describe characteristic neuroimaging findings.

Main Methods:

  • Review of clinical data and diagnostic criteria for NIID.
  • Analysis of histopathological findings (intranuclear inclusions).
  • Correlation of clinical symptoms with Magnetic Resonance Imaging (MRI) findings.

Main Results:

  • NIID presents with progressive dementia, muscle weakness, and sensory/autonomic disturbances.
  • Skin biopsy is a key diagnostic tool, enabling increased incidence detection.
  • MRI reveals persistent, worsening hyperintense lesions in the subcortical white matter, particularly U-fibers.

Conclusions:

  • NIID is a significant neurodegenerative disorder with characteristic clinical and radiological features.
  • Early diagnosis is facilitated by skin biopsy.
  • The progressive nature of NIID necessitates ongoing monitoring and research into effective treatments.