Related Experiment Video
Updated: Jul 29, 2026
07:08
Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
Mechanisms underlying Children's susceptibility to environmental toxicants
E M Faustman1, S M Silbernagel, R A Fenske
1Center for Child Environmental Health Risks Research, University of Washington, Seattle, Washington 98105-6099, USA. faustman@u.washington.edu
Environmental Health Perspectives
|March 4, 2000
Summary
Protecting children
Area of Science:
- Environmental Health
- Toxicology
- Pediatrics
Background:
- Children's health protection is a significant public health concern.
- Scientifically sound, child-specific risk assessment methods are crucial.
- Understanding children's unique sensitivities to environmental toxicants is key.
Purpose of the Study:
- To identify and discuss mechanisms of susceptibility in children relevant for toxicity assessment.
- To present examples of exposure factors influencing children's susceptibility.
- To integrate these considerations into a framework for human risk assessment.
Main Methods:
- Review of scientific literature on child-specific toxicity and exposure mechanisms.
- Identification of key factors contributing to children's susceptibility to environmental toxicants.
- Case illustration using pesticide research from the University of Washington Child Health Center.
Main Results:
- Mechanisms of susceptibility affecting toxicity in children were identified.
- Exposure factors contributing to children's susceptibility were presented.
- Pesticide research examples highlighted child-specific risk factors.
Conclusions:
- A comprehensive understanding of child-specific toxicity and exposure is essential for accurate risk assessment.
- Integrating susceptibility factors into a risk assessment framework is vital for protecting children's health.
- Child-specific environmental risk assessment methods are critical for public health.
Related Concept Videos
01:36Types 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...
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...
01:26Toxic 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,...
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,...
01:24Drug Toxicity: Risk factors
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
01:24Drug 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...
01:30Drug Toxicity: Allergic Reactions
Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
01:23Toxicity Testing in Animals
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...