Mercury Toxicity and Neurogenesis in the Mammalian Brain.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic, cellular, and animal models without systematic review methodology.
PubMed 34299140 · doi:10.3390/ijms22147520
What was done
This narrative review synthesized literature examining the impact of mercury, specifically methylmercury, on embryonic neurogenesis in the developing mammalian brain. The authors summarized experimental models used to investigate developmental mercury toxicity, theoretical mechanisms of pathogenesis, and potential interventions to mitigate neurotoxic damage.
What was found
The abstract reports no numerical data, statistics, or effect estimates. It qualitatively describes that developing embryonic neurons and neural progenitor processes—including proliferation, differentiation, migration, programmed cell death, and network integration—are particularly susceptible to mercury toxicity.
Why it matters
It organizes the mechanistic understanding of how developmental methylmercury exposure disrupts early brain formation and identifies potential pathways for neuroprotective strategies.
Limits
The paper is a non-systematic narrative review focused on mechanistic and non-human mammalian models. Adult neurogenesis was excluded, and no primary human data or quantitative syntheses were reported.
Cited by
- supports Developing fetuses are significantly more sensitive to mercury toxicity than adults.