Mechanistic links between cadmium and MAPK pathways leading to neurodegeneration.
Level 5 - mechanism / opinion, no new human data
Systematic review of preclinical and mechanistic evidence (by design analogy, not clinical CEBM)
PubMed 41724252 · doi:10.1016/j.ntt.2026.107588
What was done
The authors conducted a systematic review searching databases including PubMed, Scopus, and ScienceDirect to map the mechanistic roles of cadmium exposure in neurodegenerative disorders, specifically analyzing oxidative stress, protein misfolding, autophagy dysregulation, and MAPK signaling pathways (ERK, JNK, and p38).
What was found
The abstract reports no quantitative results, sample sizes, or effect estimates. It reports qualitatively that cadmium exposure is associated with mitochondrial dysfunction, neuroinflammation, autophagy disruption, misfolding of tau, amyloid-β, and α-synuclein, and elevated markers including IL-6, IL-8, and cytochrome c.
Why it matters
It synthesizes molecular pathways linking environmental cadmium exposure to pathological mechanisms observed in Alzheimer's and Parkinson's diseases.
Limits
No quantitative data, study count, inclusion criteria, or quality assessments are reported in the abstract. The underlying literature consists of preclinical and mechanistic studies rather than human clinical outcomes.
Cited by
- supports Toxic metals carried into the brain by air pollution are associated with the misfolding of alpha-synuclein in Parkinson's disease and beta-amyloid in Alzheimer's disease.