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Related Experiment Videos

[The effect of fluorine on the developing human brain].

L Du1

  • 1Department of Pathology, Guiyang Medical College.

Zhonghua Bing Li Xue Za Zhi = Chinese Journal of Pathology
|August 1, 1992
PubMed
Summary

Chronic fluorosis during pregnancy harms developing fetal brains, altering neuron structure and reducing mitochondrial density. This study highlights the risks of high fluoride exposure in endemic areas.

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Regional variations in retinopathy of prematurity incidence for preterm infants <32 weeks' gestation in China.

Public health·2023

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Toxicology

Context:

  • Investigating the impact of environmental factors on prenatal development.
  • Assessing the effects of chronic fluorosis in endemic regions.

Purpose:

  • To evaluate the neuropathological changes in fetuses exposed to high fluoride levels in utero.
  • To compare brain stereology between fetuses from fluorosis-endemic and non-endemic areas.

Summary:

  • Stereological analysis of fetal brains (5th-8th gestation month) revealed significant alterations in fetuses from fluorosis-endemic areas.
  • Increased numerical density of neurons and neuroblasts, altered nucleus-cytoplasm ratio, and reduced mean neuron volume were observed.
  • Mitochondrial changes included significantly reduced numerical, volume, and surface densities.

Impact:

  • Demonstrates that chronic intrauterine fluorosis can adversely affect fetal brain development.
  • Provides evidence for the neurotoxic effects of fluoride exposure during critical prenatal periods.
  • Underscores the importance of monitoring and mitigating fluoride exposure in pregnant populations in endemic zones.

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