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The effect of glucocorticoids on the accumulation of utrophin by cultured normal and dystrophic human skeletal muscle satellite cells

Pasquini, F., Guerin, C., Blake, Derek J, Davies, K., Karpati, G. and Holland, P. 1995. The effect of glucocorticoids on the accumulation of utrophin by cultured normal and dystrophic human skeletal muscle satellite cells. Neuromuscular Disorders 5 (2) , pp. 105-114. 10.1016/0960-8966(94)00042-8

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Abstract

Human muscle cultures undergo a long-term loss of myotubes and a decline in dystrophin content, which can be prevented by glucocorticoid treatment of the cultures. We confirmed these findings and extended them to show that the utrophin content of control and dexamethasone-treated normal myotube cultures is not significantly different. In contrast to normal cultures, the utrophin content of long-term dexamethasone-treated DMD myotube cultures was significantly greater than that of the corresponding untreated cultures. Utrophin mRNA transcript levels normalized to total poly (A) were unaffected by dexamethasone treatment of either normal or DMD myotube cultures, suggesting the effect of dexamethasone on utrophin accumulation by DMD cultures is mediated post-transcriptionally. A combination of an increase in myotube numbers and lack of competition with dystrophin for membrane-binding sites in DMD myotubes may explain the distinct effects of dexamethasone on utrophin levels in normal and DMD cultures.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Subjects: R Medicine > R Medicine (General)
Publisher: Elsevier
ISSN: 0960-8966
Last Modified: 04 Jun 2017 08:39
URI: http://orca-mwe.cf.ac.uk/id/eprint/82287

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