Skip to content
Heavy Metal Index

Effects of methylmercury toxicity on fetal brain development: review of

Source

This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus.

Page snapshot
Cited by6 pages
Metals measured4
Evidence tierB
Year1988

Overview

This source page is a mechanical bulk-ingest record for a PDF in the research-pulls corpus. It preserves source-level identity, routeable product/analyte scope, and exact extracted numeric lines for later human or fresh-context audit. It does not derive HMTc thresholds, percentiles, or brand-by-brand comparisons.

Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

  • described in Table 1.
  • Table 1. Stages of fetal CNS development.
  • brain of the developing fetus. Studies show that fetal Hg concentrations can be up to 30% higher
  • distributed throughout the body through the blood. It is worth noting that around 95% of the hg
  • blood levels, with cord blood concentrations often 30% to 70% higher than maternal Hg levels
  • different approaches to safety factors and the databases used to establish limits (table 2).
  • Table 2. Main human biomarkers of mercury exposure and their respective reference values.
  • Blood The presence of Hg in the blood indicates recent or current exposure to Hg 3,5 µg/L
  • Breast Milk Colostrum, transitional milk and mature milk can be sources of Hg exposure to the newborn 1,4–1,7 µg/L
  • Placental Tissue** Placental chorionic tissue is a good predictor of Hg concentration in newborns 0,3mg/kg
  • avoided by pregnant women, as these species often contain total Hg levels greater than 0.5 mg/kg,
  • reducing the risk of NTDF by 69% (recommendation grade A). Therefore, women planning

Methods (brief)

  • tissue, hair, urine, breast milk, and umbilical cord. Most of these matrices can be collected non-

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

Verification notes

  • Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing wiki/sources/ pages before creation.
  • Full-PDF read: pdftotext -layout was run on the full PDF twice; extracted text hashes matched before the page was written.
  • Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
  • Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
  • HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.

Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.

CommitDateChangeDescription
b01ec52c2026-08-04major2 sections added
d49e450f2026-08-03major5 sections added; narrative text revised