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Related Experiment Video

Updated: Dec 8, 2025

Clinical Testing and Spinal Cord Removal in a Mouse Model for Amyotrophic Lateral Sclerosis ALS
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Amyotrophic lateral sclerosis and lead: A systematic update.

Cristiano Farace1, Grazia Fenu2, Simone Lintas2

  • 1Department of Biomedical Science - Histology, University of Sassari, Sassari, Italy; National Institute of Biostructures and Biosystems, Rome, Italy.

Neurotoxicology
|September 17, 2020
PubMed
Summary

Lead (Pb) exposure may significantly contribute to the development and progression of amyotrophic lateral sclerosis (ALS). Further research is needed to understand the biopathological mechanisms and potential therapies for Pb-related ALS.

Keywords:
ALS risk factorAmyotrophic lateral sclerosis (ALS)Gene–environment axisLead (Pb)TAR DNA-binding protein (TDP-43)Update

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Area of Science:

  • Environmental health
  • Neuroscience
  • Toxicology

Background:

  • Heavy metals are implicated as environmental triggers for amyotrophic lateral sclerosis (ALS).
  • Establishing a direct causative link between heavy metals and ALS pathogenesis remains challenging.
  • Epidemiological, clinical, and experimental data suggest lead (Pb) may play a significant role in ALS.

Purpose of the Study:

  • To comprehensively review the scientific literature on the association between lead (Pb) and amyotrophic lateral sclerosis (ALS).
  • To clarify the nature of the association and the potential causative role of Pb in ALS onset and progression.

Main Methods:

  • Systematic review of scientific literature from the last decade.
  • Objective database searches and critical analysis of evidence.
  • Examination of multidisciplinary associations and potential molecular mechanisms.

Main Results:

  • A notable association between occupational lead (Pb) exposure and ALS development/progression was identified.
  • Preliminary evidence suggests a possible role for TAR DNA binding protein (TDP-43) in Pb-mediated ALS.
  • The review highlights the need for further investigation into Pb's specific role in ALS.

Conclusions:

  • Lead (Pb) exposure, particularly occupational, is a potential contributing factor to amyotrophic lateral sclerosis (ALS).
  • The preliminary findings on TDP-43-based mechanisms warrant further investigation.
  • Understanding the Pb-ALS link may inform future therapeutic strategies and public health policies.