Abstract：
:We studied the morphology of rabbit psoas muscle fixed at increasing intervals of time in a chemical skinning solution (Wood et al., 1975), or after skinning and storage for times up to 1 week. The storage solution, in which the chemically skinned muscled fibers were kept at -20 degrees C, had the same ionic composition as the skinning solution but was made with 50% (v/v) glycerol. Progressive structural changes occurred in fibers exposed to skinning solution. The structural changes were essentially complete after 24-48 hr in skinning solution and no further changes were detected in fibers stored for periods up to 1 week. Structural changes were: (i) holes or gaps in the plasma membrane; (ii) swelling of mitochondria and disorganization of their internal structure; (iii) slight swelling of the sarcoplasmic reticulum; (iv) disappearance of sarcoplasmic reticulum (SR) feet from triadic gaps. Other changes included loss of glycogen between fibrils and extraction of myoplasm, or the change of its staining properties. All architectural elements of the SR, except "feet", remained during skinning and storage, and the SR remained able to accumulate calcium. The morphology of the myofilaments during chemical skinning and during storage did not differ from control fibers. We conclude that chemical skinning alters the gross structure of the plasma membrane and mitochondria, but produces minimal changes in the sarcoplasmic reticulum and contractile proteins.
journal_name
Tissue Celljournal_title
Tissue & cellauthors
Eastwood AB,Wood DS,Bock KL,Sorenson MMdoi
10.1016/0040-8166(79)90062-4subject
Has Abstractpub_date
1979-01-01 00:00:00pages
553-66issue
3eissn
0040-8166issn
1532-3072pii
0040-8166(79)90062-4journal_volume
11pub_type
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