Abstract:
:Excessive accumulation of neurofilaments in the cell bodies and proximal axons of motor neurons is a major pathological hallmark during the early stages of many human motor neuron diseases. To test directly the consequence of overexpression of the major neurofilament subunit NF-L, we produced transgenic mice that accumulate NF-L to approximately 4-fold the normal level in the sciatic nerve. In young animals, the motor neurons of the ventral horn of the spinal cord have massive accumulations of neurofilaments, swollen perikarya, and eccentrically localized nuclei. NF-L accumulation is accompanied by an increased frequency of axonal degeneration, proximal axon swelling, and severe skeletal muscle atrophy. These data indicate that extensive accumulation of neurofilaments in motor neurons can trigger the neurodegenerative process.
journal_name
Celljournal_title
Cellauthors
Xu Z,Cork LC,Griffin JW,Cleveland DWdoi
10.1016/0092-8674(93)90157-lsubject
Has Abstractpub_date
1993-04-09 00:00:00pages
23-33issue
1eissn
0092-8674issn
1097-4172pii
0092-8674(93)90157-Ljournal_volume
73pub_type
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