Related Experiment Video
Updated: Apr 17, 2026

08:59
Real-Time Fluorescent Measurement of Synaptic Functions in Models of Amyotrophic Lateral Sclerosis
Published on: July 16, 2021
3.3K
Risk factors for amyotrophic lateral sclerosis
Caroline Ingre1, Per M Roos2, Fredrik Piehl1
1Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Clinical Epidemiology
|February 25, 2015
Summary
Amyotrophic lateral sclerosis (ALS), a motor neuron disease, is influenced by both genetic and non-genetic factors. This review examines lifestyle, environmental exposures, and medical conditions as potential non-genetic risk factors for ALS.
Area of Science:
- Neurology
- Epidemiology
- Environmental Health
Background:
- Amyotrophic lateral sclerosis (ALS) is the most common fatal motor neuron disease.
- While genetic factors are known, non-genetic contributors to ALS require further investigation.
- Recent decades suggest a potential increase in ALS incidence.
Purpose of the Study:
- To review major genetic contributors to ALS.
- To focus on and discuss commonly examined non-genetic risk factors for ALS.
- To outline future research directions for non-genetic ALS risk factors.
Main Methods:
- Literature review of genetic studies.
- Review of non-genetic risk factors including lifestyle, occupational, and environmental exposures.
- Discussion of potential links between ALS and other medical conditions.
Main Results:
- Several major genetic contributors to ALS have been identified.
- Lifestyle factors (smoking, diet, exercise, BMI) are examined.
- Occupational/environmental factors (EMF, metals, pesticides, toxins, viruses) are discussed.
- Links to head trauma, metabolic, cancer, and inflammatory diseases are explored.
Conclusions:
- Non-genetic factors play a significant role in ALS etiology.
- Comprehensive examination of lifestyle, environmental, and medical factors is crucial.
- Future research should focus on efficiently investigating these non-genetic risk factors.
More Related Videos
Related Concept Videos
Parkinson's Disease: Overview
2.5K
Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
2.5K
Amyloid Fibrils
13.2K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
13.2K
Amyloid Fibrils
7.0K
7.0K
Cross-bridge Cycle
125.7K
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.
125.7K
Alzheimer's Disease: Overview
2.0K
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
2.0K
Lysosomal Hydrolases
4.8K
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
4.8K

