HISTOCHEMISTRY OF MYELIN–XV. CHANGES IN THE MYELIN PROTEINS OF THE PERIPHERAL NERVE UNDERGOING WALLERIAN DEGENERATION–ELECTROPHORETIC AND MICRODENSITOMETRIC OBSERVATIONS

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Abstract
The chronological order of changes in rat peripheral nerve proteins during Wallerian degeneration has been investigated by microdensitometric and electrophoretic techniques. Both methods revealed an early loss of myelin proteins. The histochemical microdensitometric study showed a very substantial early loss of stainable protein basic groups and a somewhat slower progressive loss of the major protein component of peripheral nerve myelin (the J band). The electrophoretic study showed an early loss of both the J band protein and the slower‐moving basic protein band. The histochemical study also suggested that some cerebroside may be lost in the early stage of Wallerian degeneration. It is concluded that degradation of myelin proteins is an initial event in the process of myelin breakdown.

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