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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Adam Brown, Robert H. Seijffers, Rhona Woolf, Clifford J. Zhang, Jiangwen Selig, Martin Tamrazian, Eric Hynynen, Meri Babaniyi, Olusegun Matthews, Jonathan C. |
| Description | Author Affiliation: Seijffers R ( F. M. Kirby Neurobiology Center and Department of Neurology, Children's Hospital, Boston, MA 02115.); |
| Abstract | ALS is a fatal neurodegenerative disease characterized by a progressive loss of motor neurons and atrophy of distal axon terminals in muscle, resulting in loss of motor function. Motor end plates denervated by axonal retraction of dying motor neurons are partially reinnervated by remaining viable motor neurons; however, this axonal sprouting is insufficient to compensate for motor neuron loss. Activating transcription factor 3 (ATF3) promotes neuronal survival and axonal growth. Here, we reveal that forced expression of ATF3 in motor neurons of transgenic SOD1(G93A) ALS mice delays neuromuscular junction denervation by inducing axonal sprouting and enhancing motor neuron viability. Maintenance of neuromuscular junction innervation during the course of the disease in ATF3/SOD1(G93A) mice is associated with a substantial delay in muscle atrophy and improved motor performance. Although disease onset and mortality are delayed, disease duration is not affected. This study shows that adaptive axonal growth-promoting mechanisms can substantially improve motor function in ALS and importantly, that augmenting viability of the motor neuron soma and maintaining functional neuromuscular junction connections are both essential elements in therapy for motor neuron disease in the SOD1(G93A) mice. Accordingly, effective protection of optimal motor neuron function requires restitution of multiple dysregulated cellular pathways. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 4 |
| Volume Number | 111 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2014-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Activating Transcription Factor 3 Metabolism Amyotrophic Lateral Sclerosis Physiopathology Motor Neurons Pathology Muscle, Skeletal Animals Cell Survival Disease Models, Animal Mice Superoxide Dismutase Genetics Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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