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Toni L. Williamson

Researcher at University of California, San Diego

Publications -  7
Citations -  1277

Toni L. Williamson is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Neurofilament & Motor neuron. The author has an hindex of 6, co-authored 7 publications receiving 1241 citations. Previous affiliations of Toni L. Williamson include Ludwig Institute for Cancer Research.

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Slowing of axonal transport is a very early event in the toxicity of ALS–linked SOD1 mutants to motor neurons

TL;DR: Reduced transport of selective cargoes of slow transport, especially tubulin, arises months before neurodegeneration in two SOD1 mutations linked to familial ALS, verifying the hypothesis that damage to the cargoe or machinery ofslow transport is an early feature of toxicity mediated by mutant SOD 1.
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Absence of neurofilaments reduces the selective vulnerability of motor neurons and slows disease caused by a familial amyotrophic lateral sclerosis-linked superoxide dismutase 1 mutant.

TL;DR: By deleting NF-L, the major neurofilament subunit required for filament assembly, onset and progression of disease caused by familial ALS-linked SOD1 mutant G85R are significantly slowed, while selectivity of mutant-mediated toxicity for motor neurons is reduced.
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Neurofilament subunit NF-H modulates axonal diameter by selectively slowing neurofilament transport.

TL;DR: Mice constructed that express wild-type mouse NF-H up to 4.5 times the normal level are constructed to examine the mechanism through which neurofilaments regulate the caliber of myelinated axons and to test how aberrant accumulations of neurofilament cause motor neuron disease.
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Neurofilament-dependent radial growth of motor axons and axonal organization of neurofilaments does not require the neurofilament heavy subunit (NF-H) or its phosphorylation.

TL;DR: Since postnatal growth of motor axon caliber continues largely unabated in the absence ofNF-H, neither interactions mediated by NF-H nor the extensive phosphorylation of it within myelinated axonal segments are essential features of this growth.
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Toxicity of ALS-linked SOD1 mutants.

TL;DR: A potential mechanism through which dominantly inherited mutation in superoxide dismutase 1 (SOD1), an abundant, ubiquitously expressed antioxidant protein, triggers the selective death of motor neurons in amyotrophic lateral sclerosis (ALS).