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Related Experiment Videos

Zonisamide in West syndrome.

Y Suzuki1

  • 1Collaborate Clinical Research Group for Pediatric Neurology, Osaka University Medical School, Osaka, Japan. yasuzuki@mch.pref.osaka.jp

Brain & Development
|November 10, 2001
PubMed
Summary

Zonisamide (ZNS) shows a 20-38% response rate for West syndrome initial treatment, with rapid effects within 1-2 weeks. This antiepileptic drug appears effective and well-tolerated in pediatric patients.

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Area of Science:

  • Pediatric Neurology
  • Pharmacology

Background:

  • West syndrome is a severe form of epilepsy in infants.
  • Zonisamide (ZNS) is an antiepileptic drug increasingly used in Japan.
  • Limited data exists on ZNS as an initial treatment for West syndrome.

Purpose of the Study:

  • To evaluate the efficacy and tolerability of Zonisamide (ZNS) as an initial treatment for West syndrome.
  • To determine the response rate and onset of action of ZNS in pediatric patients with West syndrome.

Main Methods:

  • Retrospective analysis of pediatric patients with West syndrome treated with ZNS.
  • Dosage administered: 4-8 mg/kg/day.
  • Response assessment based on clinical improvement within 1-2 weeks.

Main Results:

  • Overall response rate to ZNS ranged from 20% to 38%.
  • Cryptogenic West syndrome patients demonstrated a better response compared to symptomatic patients.
  • Rapid onset of action observed, with most responders showing improvement within 1-2 weeks.
  • No serious adverse events were reported during the study period.

Conclusions:

  • Zonisamide (ZNS) is a potentially effective and well-tolerated option for the initial management of selected West syndrome cases.
  • The rapid response observed suggests ZNS could be a valuable therapeutic choice for early intervention in West syndrome.

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