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February 12, 2013; 80 (7) In Focus

Spotlight on the February 12 Issue

Robert A. Gross
First published February 11, 2013, DOI: https://doi.org/10.1212/WNL.0b013e318283bb2d
Robert A. Gross
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Spotlight on the February 12 Issue
Robert A. Gross
Neurology Feb 2013, 80 (7) 605; DOI: 10.1212/WNL.0b013e318283bb2d

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Whole-brain magnetic resonance spectroscopic imaging measures are related to disability in ALS

Embedded Image

Magnetic resonance spectroscopic imaging has demonstrated cerebral N-acetylaspartate decreases as a potential biomarker of neuronal loss, but most studies have examined only a small region of interest. The Metabolite Imaging and Data Analysis System permitted whole-brain study and linked NAA decreases within the corticospinal tract to disability in ALS.

See p. 610

From editorialists Brodtmann & Kiernan: “…these recent neuroimaging findings outline a model of ALS as a ‘systems degeneration,’ bringing us one step closer to an understanding of how ALS disease spread may occur.”

See p. 606

ALS dysphagia pathophysiology: Differential botulinum toxin responseEmbedded Image

The improvement after botulinum toxin type A observed in patients with isolated upper esophageal sphincter dysfunction suggests a different ALS pathophysiology of dysphagia that responds better to this treatment. Botulinum toxin type A may be an alternative to treatment with percutaneous endoscopic gastrostomy (PEG) and may prolong PEG-free time.

See p. 616

Prognostic factors of motor impairment, disability, and quality of life in newly diagnosed PDEmbedded Image

The authors assessed disease progression in 129 patients with newly diagnosed PD. The presence of levodopa-nonresponsive motor symptoms and cognitive dysfunction at the time of diagnosis were the main determinants of disability, showing the importance of extra-nigrostriatal pathology in PD.

See p. 627

Functional disturbance of the locomotor network in progressive supranuclear palsy

[18F]-FDG-PET scans were performed in 12 patients with progressive supranuclear palsy (PSP) and 12 controls during walking and at rest. Gait impairment in PSP was associated with dysfunction of the indirect, modulatory prefrontal–subthalamic–pedunculopontine loop of locomotor control; activity in the direct, stereotyped locomotor loop to the spinal cord with rhythmic cerebellar drive was increased.

See p. 634

A randomized controlled trial of intranasal ketamine in migraine with prolonged auraEmbedded ImageEmbedded Image

This study investigated the effect of 25 mg intranasal ketamine on migraine with prolonged aura in 30 migraineurs using 2 mg intranasal midazolam as an active control, with data from 3 episodes recorded. Intranasal ketamine was effective in reducing aura severity in patients with migraine with prolonged aura.

See p. 642

Cerebral atrophy in mild cognitive impairment and Alzheimer disease: Rates and acceleration

The authors quantified the cerebral atrophy rates and acceleration rates using 0-, 6-, 12-, 18-, 24- and 36-month MRI scans in subjects with mild cognitive impairment, subjects with mild Alzheimer disease (AD), and healthy controls. The small acceleration rates suggested a long period of transition to the pathologic losses seen in clinical AD.

See p. 648

CONTEMPORARY ISSUES

Teleneurology applications: Report of the Telemedicine Work Group of the American Academy of NeurologyEmbedded Image

This article discusses teleneurology from the patient and provider perspectives; also discussed are the experience from the military, barriers to growth of teleneurology, and the importance of support from the American Academy of Neurology. Teleneurology provides opportunities for neurologists and patients to improve care and enhance neurologic practice.

See p. 670

Footnotes

  • NB: “A keratoma horn following deep brain stimulation,” see p. 688. To check out other NeuroImages, point your browser to www.neurology.org.

  • © 2013 American Academy of Neurology

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  • Article
    • Whole-brain magnetic resonance spectroscopic imaging measures are related to disability in ALS
    • ALS dysphagia pathophysiology: Differential botulinum toxin response
    • Prognostic factors of motor impairment, disability, and quality of life in newly diagnosed PD
    • Functional disturbance of the locomotor network in progressive supranuclear palsy
    • A randomized controlled trial of intranasal ketamine in migraine with prolonged aura
    • Cerebral atrophy in mild cognitive impairment and Alzheimer disease: Rates and acceleration
    • CONTEMPORARY ISSUES
    • Footnotes
  • Info & Disclosures
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