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Related Concept Videos

Types of Toxins01:36

Types of Toxins

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Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
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Toxic Reactions: Overview01:26

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When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
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Teratogenicity01:07

Teratogenicity

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The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
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Environmental Influences on Intelligence01:29

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Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children...
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Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
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Disorders of the Nervous Tissue01:28

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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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Updated: Aug 7, 2025

Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays
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Environmental Toxicants and the Developing Brain.

Amanda C Wylie1, Sarah J Short2

  • 1Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Frank Porter Graham Child Development Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.

Biological Psychiatry
|March 11, 2023
PubMed
Summary
This summary is machine-generated.

Exposure to environmental toxicants like fine particulate matter (PM2.5), manganese, and phthalates during early life can impact brain development. More research is needed on how these common pollutants affect children's neurodevelopment using neuroimaging.

Keywords:
Brain developmentEnvironmental toxicantsFine particulate matterManganeseNeuroimagingPhthalates

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Area of Science:

  • Environmental health
  • Neuroscience
  • Developmental toxicology

Background:

  • Early life is critical for brain development and susceptible to environmental exposures.
  • Ubiquitous toxicants such as fine particulate matter (PM2.5), manganese, and phthalates are linked to adverse health outcomes.
  • Limited research exists on the neurodevelopmental effects of these toxicants in humans using neuroimaging.

Purpose of the Study:

  • To review the impact of PM2.5, manganese, and phthalates on human neurodevelopment.
  • To summarize mechanistic data from animal models and epidemiological studies.
  • To highlight neuroimaging research on these toxicants in pediatric populations.

Main Methods:

  • Narrative review of existing literature.
  • Summarization of mechanistic evidence from animal models.
  • Analysis of studies examining toxicants and pediatric neurodevelopmental outcomes.
  • Focus on studies utilizing neuroimaging techniques.

Main Results:

  • Animal models provide mechanistic insights into toxicant effects on neurological development.
  • Prior research links these toxicants to altered developmental, physical, and mental health trajectories.
  • Few studies have investigated these toxicants using neuroimaging in pediatric populations.

Conclusions:

  • Further research should integrate environmental toxicant assessment into large, longitudinal neuroimaging studies.
  • Multidimensional data analysis and investigation of combined stressors are crucial.
  • Understanding toxicant-induced alterations in brain structure and function is key to predicting long-term health sequelae.