Unbalanced Copper in ALS: The Metal Connection in the Brain Fluid!

Published on November 17, 2022

Imagine the brain as a delicate machine that requires specific metals to function properly. In a study investigating amyotrophic lateral sclerosis (ALS), researchers explored the potential association between metal levels in the cerebral spinal fluid (CSF) and ALS risks. Using a sophisticated technique called inductively coupled plasma mass spectrometry (ICP-MS), they measured the concentrations of copper (Cu), nickel (Ni), mercury (Hg), arsenic (As), manganese (Mn), and iron (Fe) in the CSF of ALS patients and healthy individuals. Astonishingly, they found significant differences among the groups. The ALS patients and those with spinal-onset ALS had lower levels of Cu compared to the healthy control group, suggesting an imbalance in copper. Conversely, Ni levels were higher in the spinal-onset group, indicating a potential role for this metal in the disease. Furthermore, the researchers examined relationships between metal levels and disease severity, sex, and serum triglycerides to uncover possible connections to variations in ALS presentation. This groundbreaking study sheds light on the intricate interplay between metals and neurodegenerative diseases like ALS.

A plethora of environmental risk factors has been persistently implicated in the pathogenesis of amyotrophic lateral sclerosis (ALS), including metal/metalloids. This study aimed to examine potential associations between cerebral spinal fluid (CSF) metal/metalloids and ALS risks. CSF concentrations of copper (Cu), nickel (Ni), mercury (Hg), arsenic (As), manganese (Mn), and iron (Fe) in ALS (spinal- and bulbar-onset) patients and controls were measured using inductively coupled plasma mass spectrometry (ICP-MS). Results from this study revealed marked differences between control, spinal-onset, and bulbar-onset groups. We report that Cu levels were lower in the ALS and spinal-onset groups compared to the control group. Ni level were higher in the spinal-onset group compared to the control and bulbar-onset groups. In addition, associations between CSF metal/metalloid levels with disease severity, sex, and serum triglycerides were also examined to broach the potential relevance of neurotoxic metal/metalloids in ALS disease heterogeneity.

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