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Related Concept Videos

Toxicity Testing in Animals01:23

Toxicity 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...
Toxicokinetics: Overview01:21

Toxicokinetics: Overview

Studies that assess how a drug is absorbed, distributed, metabolized, and excreted (ADME) at toxic doses are termed toxicokinetics. Understanding toxicokinetics helps predict adverse drug reactions (ADRs) and manage toxicity in humans.Toxicokinetics differs from pharmacokinetics mainly in the dose levels studied, with toxicokinetics focusing on higher toxic doses. The kinetics at these levels can be non-linear due to altered physiological processes. Toxicodynamics examines the relationship...
In Vitro Drug Release Testing: Overview, Development and Validation01:10

In Vitro Drug Release Testing: Overview, Development and Validation

In vitro dissolution and drug release tests assess how quickly and how much of a drug is released from its dosage form into an aqueous medium under standardized laboratory conditions. These tests are essential tools in pharmaceutical development and quality assurance, offering insight into the drug's performance before clinical use.During formulation development, dissolution testing identifies incomplete or inconsistent drug release issues. It also supports decisions on selecting the optimal...
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...
Preclinical Development: Overview01:28

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Drug toxicity: Idiosyncratic Reactions01:16

Drug toxicity: Idiosyncratic Reactions

Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...

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Updated: Jun 10, 2026

Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation
17:28

Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation

Published on: June 17, 2015

Interdisciplinary approach to toxicity test development and validation.

J M Frazier1

  • 1ManTech Environmental Technology Inc., Tri-Service Toxicology Consortium, Wright-Patterson Air Force Base, Dayton, OH 45437-0009, USA.

Toxicology in Vitro : an International Journal Published in Association with BIBRA
|July 24, 2010
PubMed
Summary
This summary is machine-generated.

Developing new in vitro toxicity tests requires a diverse interdisciplinary team of experts. This collaboration is crucial for validating alternative testing methods and advancing toxicological evaluations.

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Area of Science:

  • Toxicology
  • Biomedical Science
  • Computational Biology

Background:

  • Toxicological processes involve complex biological interactions at multiple organizational levels.
  • Chemicals and their metabolites perturb these systems by interacting with molecular targets.
  • In vitro toxicity testing is essential for evaluating chemicals and products.

Purpose of the Study:

  • To outline the essential expertise required for developing and validating novel in vitro toxicity tests.
  • To emphasize the need for interdisciplinary collaboration in advancing toxicological evaluation methods.

Main Methods:

  • The abstract describes the ideal composition of an interdisciplinary research team.
  • It lists eight key areas of expertise: cell physiology, molecular toxicology, measurement technology, theoretical toxicology/modeling, chemistry/structure-activity relationships, in vivo toxicology/pathology, kinetics/metabolism, and statistics.
  • It highlights the challenges faced by teams lacking a full spectrum of expertise.

Main Results:

  • Successful development and validation of in vitro toxicity tests necessitate a comprehensive team approach.
  • Gaps in expertise within research teams hinder progress in developing and validating new testing methodologies.

Conclusions:

  • A fully integrated, interdisciplinary team is critical for the advancement of in vitro toxicity testing.
  • The European Centre for the Validation of Alternative Methods (ECVAM) is positioned to facilitate the formation of such teams to accelerate progress.