DYSTROPHIN IS LOCALIZED TO THE PLASMA-MEMBRANE OF HUMAN SKELETAL-MUSCLE FIBERS BY ELECTRON-MICROSCOPIC CYTOCHEMICAL STUDY

被引:64
|
作者
CARPENTER, S [1 ]
KARPATI, G [1 ]
ZUBRZYCKAGAARN, E [1 ]
BULMAN, DE [1 ]
RAY, PN [1 ]
WORTON, RG [1 ]
机构
[1] HOSP SICK CHILDREN,DEPT GENET,TORONTO M5G 1X8,ONTARIO,CANADA
关键词
dystrophin; electron‐microscopic immunocytochemistry; human skeletal muscle; immunoperoxidase; plasmalemma;
D O I
10.1002/mus.880130503
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Electron‐microscopic immunoperoxidase technique revealed plasmalemmal localization of dystrophin in microscopically normal human skeletal muscle fibers obtained from nine routine diagnostic muscle biopsies. There was no evidence of periodicity of the immunoreactive product nor was there any evidence of immunostaining in any organelle besides the plasma membrane. Dystrophin appears to be a cytoskeletal protein associated with the plasmalemma. Its function is presumed to be the maintenance of the mechanical stability of the surface membrane so that it can withstand the normal contraction‐induced stresses without disruption. Copyright © 1990 John Wiley & Sons, Inc.
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页码:376 / 380
页数:5
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