Methylprednisolone selectively affects dystrophin expression in human muscle cultures.

Abstract:

:Glucocorticoid therapy slows the progression of Duchenne muscular dystrophy. In muscle cultures, the addition of the glucocorticoid methylprednisolone increases myogenesis in most normal mixed and clonal cultures. Conversely, in some normal clonal and most dystrophic cultures, methylprednisolone inhibits fusion. However, in fusion-arrested normal and Becker muscular dystrophy cultures, dystrophin is expressed independently of fusion and of myosin heavy chain expression, and in some cases, expression is apparently enhanced by methylprednisolone. We suggest that dystrophin is a muscle-specific protein that does not require fusion for expression, and the methylprednisolone-induced enhancement of dystrophin expression may account for some of the clinical benefits of glucocorticoids in vivo.

journal_name

Neurology

journal_title

Neurology

authors

Hardiman O,Sklar RM,Brown RH Jr

doi

10.1212/wnl.43.2.342

subject

Has Abstract

pub_date

1993-02-01 00:00:00

pages

342-5

issue

2

eissn

0028-3878

issn

1526-632X

journal_volume

43

pub_type

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