Defective axonal transport in a transgenic mouse model of amyotrophic lateral sclerosis. Export

@article{citeulike:5017042, abstract = {Amyotrophic lateral sclerosis (ALS) is a degenerative disease of motor neurons, characterized by depositions of neurofilaments in the perikarya and proximal axons. The pathogenesis of ALS remains poorly understood, but two lines of evidence suggest that neurofilament accumulation may play a causal role. First, transgenic mice that overexpress neurofilament proteins show motor neuron degeneration and, second, variant alleles of the neurofilament heavy-subunit gene (NF-H) have been found in some human ALS patients. To investigate how disorganized neurofilaments might cause neurodegeneration, we examined axonal transport of newly synthesized proteins in mice that overexpress the human NF-H gene. We observed dramatic defects of axonal transport, not only of neurofilament proteins but also of other proteins, including tubulin and actin. Ultrastructural analysis revealed a paucity of cytoskeletal elements, smooth endoplasmic reticulum and especially mitochondria in the degenerating axons. We therefore propose that the neurofilament accumulations observed in these mice cause axonal degeneration by impeding the transport of components required for axonal maintenance, and that a similar mechanism may account for the pathogenesis of ALS in human patients.}, author = {Collard, J. F. and C\^{o}t\'{e}, F. and Julien, J. P.}, citeulike-article-id = {5017042}, citeulike-linkout-0 = {http://dx.doi.org/10.1038/375061a0}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/7536898}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=7536898}, day = {4}, doi = {10.1038/375061a0}, issn = {0028-0836}, journal = {Nature}, keywords = {als, axonaltransport, mnd, neurofilament}, month = {May}, number = {6526}, pages = {61--64}, posted-at = {2009-06-30 01:33:17}, priority = {2}, title = {Defective axonal transport in a transgenic mouse model of amyotrophic lateral sclerosis.}, url = {http://dx.doi.org/10.1038/375061a0}, volume = {375}, year = {1995} }

TY - JOUR ID - citeulike:5017042 L3 - citeulike-article-id:5017042 N2 - Amyotrophic lateral sclerosis (ALS) is a degenerative disease of motor neurons, characterized by depositions of neurofilaments in the perikarya and proximal axons. The pathogenesis of ALS remains poorly understood, but two lines of evidence suggest that neurofilament accumulation may play a causal role. First, transgenic mice that overexpress neurofilament proteins show motor neuron degeneration and, second, variant alleles of the neurofilament heavy-subunit gene (NF-H) have been found in some human ALS patients. To investigate how disorganized neurofilaments might cause neurodegeneration, we examined axonal transport of newly synthesized proteins in mice that overexpress the human NF-H gene. We observed dramatic defects of axonal transport, not only of neurofilament proteins but also of other proteins, including tubulin and actin. Ultrastructural analysis revealed a paucity of cytoskeletal elements, smooth endoplasmic reticulum and especially mitochondria in the degenerating axons. We therefore propose that the neurofilament accumulations observed in these mice cause axonal degeneration by impeding the transport of components required for axonal maintenance, and that a similar mechanism may account for the pathogenesis of ALS in human patients. IS - 6526 JF - Nature SN - 0028-0836 EP - 64 TI - Defective axonal transport in a transgenic mouse model of amyotrophic lateral sclerosis. VL - 375 SP - 61 KW - als KW - axonaltransport KW - mnd KW - neurofilament AU - Collard, JF AU - Côté, F AU - Julien, JP PY - 1995/05/04/ UR - http://dx.doi.org/10.1038/375061a0 ER -