Fungal-contaminated grass and well water and sporadic amyotrophic lateral sclerosis

Area of Science:

• Environmental microbiology
• Neuroscience
• Infectious diseases

Background:

• Fungi are significant infectious agents, yet their role as environmental disease factors is often underestimated.
• Amyotrophic lateral sclerosis (ALS), a motor neurone disease, has an unknown etiology in approximately 90% of sporadic cases.
• Previous research suggested grass or soil fungi as potential causes of sporadic ALS.

Purpose of the Study:

• To review evidence supporting a potential fungal origin for sporadic amyotrophic lateral sclerosis (ALS).
• To extend the hypothesis to include water-associated fungi as a cause of ALS.
• To propose mechanisms linking environmental fungal exposure to neurodegeneration in ALS.

Main Methods:

• Review of existing scientific literature on fungal contamination in water and its potential link to ALS.
• Examination of evidence for neurotoxic mycotoxins produced by common waterborne fungi.
• Correlation analysis between well water distribution and sporadic ALS cases in the United States.

Main Results:

• Various fungi, including Aspergillus and Fusarium, are found in drinking water and can produce neurotoxins.
• Drinking water is not routinely tested for fungal contamination.
• A correlation exists between well water sources and sporadic ALS incidence in the US.

Conclusions:

• Environmental fungal exposure, particularly through contaminated water, may be a significant factor in sporadic ALS.
• Opportunistic fungal infections could lead to long-term neuronal damage characteristic of ALS.
• Confirmation of this link could pave the way for novel therapeutic strategies for ALS.