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Related Concept Videos

Types of Toxins01:36

Types of Toxins

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...
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

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.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
Environmental Influences on Intelligence01:29

Environmental Influences on Intelligence

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 from...
Teratogenicity01:07

Teratogenicity

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...
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...

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Related Experiment Video

Updated: May 7, 2026

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae
07:06

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae

Published on: February 5, 2020

[Environmental toxic and its effect on neurodevelopment].

Hugo A Arroyo1, María C Fernández

  • 1Servicio de Neurología Infantil, Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Buenos Aires.

Medicina
|September 28, 2013
PubMed
Summary
This summary is machine-generated.

Neurodevelopmental disorders stem from brain function disturbances, with rising rates linked to environmental toxins like heavy metals and pesticides. These persistent conditions significantly impact individuals, families, and society.

Keywords:
e-wastemetals and metal compoundsorganochlorineorganophosphatespesticidespolychlorinated biphenyls

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Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
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Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants

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Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays
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Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays

Published on: April 26, 2018

Related Experiment Videos

Last Updated: May 7, 2026

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae
07:06

Studying Neurobehavioral Effects of Environmental Pollutants on Zebrafish Larvae

Published on: February 5, 2020

Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
07:08

Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants

Published on: March 6, 2018

Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays
08:28

Assessment of the Effects of Endocrine Disrupting Compounds on the Development of Vertebrate Neural Network Function Using Multi-electrode Arrays

Published on: April 26, 2018

Area of Science:

  • Neurology
  • Developmental Biology
  • Environmental Health

Context:

  • Neurodevelopmental disorders are prevalent, characterized by diverse symptoms and persistent impacts.
  • While genetic factors are implicated, epigenetic and environmental influences are increasingly recognized.
  • A notable rise in disorders like ADHD and pervasive developmental disorders has been observed.

Purpose:

  • To explore the etiology of neurodevelopmental disorders.
  • To highlight the role of environmental factors in the increasing prevalence of these disorders.

Summary:

  • Neurodevelopmental disorders arise from disrupted brain function, presenting varied symptoms and long-term consequences.
  • Genetic inheritance plays a role, but environmental factors, including heavy metal and pesticide exposure, are significant contributors.
  • Substances like pesticides and polychlorinated biphenyls, along with electronic waste, pose risks, particularly to infants and children.

Impact:

  • Increased understanding of environmental contributions to neurodevelopmental disorders.
  • Highlights risks to vulnerable populations, especially in developing nations.
  • Informs public health strategies for prevention and intervention.