alexa Dietary supplementation with S-adenosyl methionine delays the onset of motor neuron pathology in a murine model of amyotrophic lateral sclerosis.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Suchy J, Lee S, Ahmed A, Shea TB

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Abstract The full range of causative factors in Amyotrophic lateral sclerosis (ALS) remains elusive, but oxidative stress is recognized as a contributing factor. Mutations in Cu/Zn superoxide dismutase 1 (SOD-1), associated with familial ALS, promote widespread oxidative damage. Mice-expressing G93A mutant human SOD-1 mice display multiple pathological changes characteristic of ALS and are therefore useful for therapeutic development. Dietary supplementation with S-adenosyl methionine (SAM) has provided multiple neuroprotective effects in mouse models of age-related cognitive pathology. We examined herein whether SAM supplementation could affect the course of motor neuron pathology in mice-expressing mutant human SOD-1. SAM delayed disease onset by 2-3 weeks. SAM also delayed hallmarks of neurodegeneration in these mice and in ALS, including preventing loss of motor neurons, and reducing gliosis, SOD-1 aggregation, protein carbonylation, and induction of antioxidant activity. SAM did not increase survival time. These preliminary findings, using a single concentration of SAM, suggest that SAM supplementation maybe useful as part of a comprehensive therapeutic approach for ALS. This article was published in Neuromolecular Med and referenced in Journal of Addiction Research & Therapy

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