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Abstract
We examined muscle biopsies from patients with Duchenne muscular dystrophy (DMD: 39
patients) and Becker muscular dystrophy (BMD: 11 patients), female DMD-carriers (4
patients), and control subjects (26 persons) for the expression of dystrophin and
utrophin. Control subjects showed all fibers to be dystrophin-positive, while utrophin
staining was negative or weak. On the other hand, muscles from DMD patients showed
the inverse staining patterns: dystrophin was negative and utrophin staining strong.
Thus, there was a reciprocal pattern of expression between dystrophin and utrophin.
This reciprocal relationship was confirmed to some extent at the single-fiber level
in female carriers of DMD showing a mosaic immunostaining of dystrophin. We consider
that utrophin may have a function similar to that of dystrophin, and compensate to
some extent for dystrophin deficiency in DMD.
Keywords
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Article info
Publication history
Accepted:
April 15,
1993
Received in revised form:
March 29,
1993
Received:
December 11,
1992
Identification
Copyright
© 1993 Published by Elsevier Inc.