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Updated: Jul 18, 2026
08:16
Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
Energy intake and amyotrophic lateral sclerosis
Mark P Mattson1, Roy G Cutler, Simonetta Camandola
1Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA. mattsonm@grc.nia.nih.gov
Neuromolecular Medicine
|November 23, 2006
Summary
Caloric restriction may harm motor neurons in amyotrophic lateral sclerosis (ALS), unlike other brain cells. High-energy diets appear beneficial for motor neuron health in ALS.
Area of Science:
- Neuroscience
- Aging Research
- Metabolic Disorders
Background:
- Pioneering researcher Roy Walford, known for caloric restriction studies, died of ALS.
- Caloric restriction's effects on aging and neuronal health are complex and cell-type specific.
- Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease affecting motor neurons.
Purpose of the Study:
- To investigate the differential impact of low-energy diets on motor neurons versus other neuronal populations.
- To explore the potential mechanisms underlying motor neuron vulnerability to caloric restriction in ALS.
- To contrast the neuroprotective effects of caloric restriction in the brain with its potential detrimental effects on motor neurons.
Main Methods:
- Analysis of case information from Roy Walford's ALS progression.
- Review of epidemiological findings related to diet and ALS.
- Examination of controlled studies using mouse models of ALS.
- Investigation of cellular responses to energetic stress, focusing on heat-shock protein-70.
Main Results:
- Low-energy diets may increase motor neuron vulnerability to degeneration in ALS.
- High-energy diets show ameliorative effects on motor neurons in ALS models.
- Unlike other brain neurons, motor neurons may not engage adaptive neuroprotective responses to energetic stress.
- Impaired engagement of protein chaperones like heat-shock protein-70 may contribute to motor neuron vulnerability.
Conclusions:
- Low-energy diets may pose a selective risk to motor neurons in the context of ALS.
- Dietary energy intake significantly influences motor neuron survival and degeneration.
- Understanding cell-specific metabolic responses is crucial for neurodegenerative disease research.
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