Related Experiment Video
Updated: Aug 9, 2026

12:35
Clinical Testing and Spinal Cord Removal in a Mouse Model for Amyotrophic Lateral Sclerosis (ALS)
Published on: March 17, 2012
Genetics of amyotrophic lateral sclerosis
1Dept. Neurology, University Hospital Gasthuisberg, University of Leuven, Herestraat 49 3000 Leuven, Belgium. wim.robberecht@uz.kuleuven.ac.be
Journal of Neurology
|February 24, 2001
Summary
Genetic mutations in SOD1 and NFH are linked to amyotrophic lateral sclerosis (ALS). Identifying genetic causes for familial and sporadic ALS is crucial for understanding disease pathogenesis.
Area of Science:
- Neuroscience
- Genetics
- Molecular Biology
Background:
- The genetic underpinnings of amyotrophic lateral sclerosis (ALS) are identified in a small percentage of patients.
- Mutations in SOD1 (superoxide dismutase 1) account for 20% of familial ALS cases.
- Rare mutations in NFH (neurofilament heavy subunit) are also observed in ALS.
Purpose of the Study:
- To explore the known and potential genetic causes of amyotrophic lateral sclerosis (ALS).
- To highlight the significance of genetic factors in both familial and sporadic forms of ALS.
- To emphasize the advancements in molecular genetics enabling gene identification.
Main Methods:
- Review of existing genetic studies on ALS.
- Analysis of mutation data for SOD1 and NFH genes.
- Discussion of progress in molecular genetics for identifying disease-related genes.
Main Results:
- SOD1 mutations are found in 20% of familial ALS patients.
- NFH gene mutations are identified in rare ALS cases.
- Other genetic loci are linked to familial ALS, but causative genes are yet to be identified.
Conclusions:
- Genetic factors play a significant role in the pathogenesis of both familial and sporadic ALS.
- Continued progress in molecular genetics is key to discovering the genetic basis of ALS.
- Identifying these genetic components is essential for future therapeutic strategies.
Related Concept Videos
Cross-bridge Cycle
As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
Alzheimer Disease l: Introduction
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Parkinson Disease l: Introduction
Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of which...
Parkinson Disease ll: Pathophysiology
Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
Myasthenia Gravis ll: Pathophysiology
The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...

