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Abstract
Spontaneous discharges recorded on the EMG appeared in experimental mice given repeated
doses of IDPN according to a time schedule. Spontaneous discharges showing a polyphasic
pattern and duration of over 10 ms were considered to be fasciculations. One group
of mice, treated with IDPN for 4 weeks became active with an increase in muscle volume
2 months after initiation of experiment; spontaneous discharges were recorded in this
group at 3–4 weeks after first IDPN injection and disappeared at 4 months. Histologically,
neurogenic muscle atrophy, in terms of group atrophy of muscles, was seen in muscles
of mice exhibiting spontaneous discharge patterns. Peripheral nerves showed marked
atrophy with degeneration. Dissociation of neurofilaments and other organelles was
observed. Axonal swellings, filled with numerous maloriented neurofilaments, were
confirmed in the lumbar cord.
IDPN given repeatedly to mice at a certain dose causes degeneration of the peripheral
nerves and results in neurogenic muscle atrophy.
Keywords
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Article info
Publication history
Accepted:
September 15,
1986
Received in revised form:
September 15,
1986
Received:
July 16,
1986
Identification
Copyright
© 1987 Published by Elsevier Inc.