Corticosteroid treatment and functional improvement in Duchenne muscular dystrophy: long-term effect

Birol Balaban1, Dennis J Matthews, Gerald H Clayton

  • 1Department of Physical Medicine and Rehabilitation, Gulhane Military Medical Academy, Etlik-Ankara, Turkey.

Insights

Prednisone and deflazacort significantly improve function and slow disease progression in boys with Duchenne muscular dystrophy. These steroids offer similar benefits for ambulation, pulmonary function, and scoliosis, but carry risks of side effects.

Area of Science:

  • Pediatric Neurology
  • Pharmacology
  • Genetics

Background:

  • Duchenne muscular dystrophy (DMD) is a progressive genetic disorder.
  • Current treatments aim to manage symptoms and slow disease progression.
  • Corticosteroids like prednisone and deflazacort are commonly used, but their long-term comparative effects require further investigation.

Purpose of the Study:

  • To compare the long-term effects of prednisone and deflazacort on functional status in children with DMD.
  • To evaluate the impact of these corticosteroids on motor function, pulmonary capacity, and need for scoliosis surgery.

Main Methods:

  • Retrospective review of 49 boys with DMD (aged 12-15 years) over 7 years.
  • Groups included prednisone treatment (n=18), deflazacort treatment (n=12), and no drug treatment (n=19).
  • Comparison of limb motor function, pulmonary function, scoliosis surgery rates, and side effects.

Main Results:

  • Steroid-treated groups showed significantly better functional status and test performance compared to the untreated group (P < 0.05).
  • No significant difference in efficacy was observed between prednisone and deflazacort (P > 0.05).
  • Treated boys had significantly less scoliosis surgery and better pulmonary function; side effects included cataracts, hypertension, and weight gain.

Conclusions:

  • Prednisone and deflazacort significantly slow DMD progression, prolonging ambulation and upper limb function.
  • Both corticosteroids demonstrate similar potency in improving pulmonary function and delaying spinal interventions.
  • Therapeutic profiles are comparable, but potential serious side effects must be monitored.
Abstract

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