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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...
Prevention of Further Absorption of Poison01:14

Prevention of Further Absorption of Poison

In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
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...
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...
Pharmaceutical Poisoning: Potential Scenarios01:26

Pharmaceutical Poisoning: Potential Scenarios

Pharmaceutical poisoning can occur through various channels, impacting an estimated 2 million hospitalized patients in the U.S. annually with serious adverse drug responses. These scenarios encompass both therapeutic uses, such as drug toxicity, where even standard dosages can lead to severe central nervous system depression, and non-therapeutic exposures, including accidental ingestion by children, and environmental and occupational exposures.Unintentional poisonings often involve exploratory...

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Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation
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An integrated ecotoxicological study reliability framework for use in toxicity value development.

Stephanie B Kennedy1, Melissa M Heintz1, William D Klaren1

  • 1ToxStrategies, LLC, Asheville, NC, United States.

Environmental Toxicology and Chemistry
|January 28, 2025
PubMed
Summary
This summary is machine-generated.

Developing reliable ecological benchmarks requires assessing study quality. The new ecotoxicological study reliability (EcoSR) framework systematically evaluates ecotoxicity data, enhancing risk assessment accuracy and transparency.

Keywords:
chemical hazard assessmentrisk assessmentrisk of biasstudy reliability

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Area of Science:

  • Environmental toxicology
  • Ecological risk assessment
  • Scientific study appraisal

Background:

  • Ecological risk assessments rely on evidence-based benchmarks for hazard evaluation.
  • Assessing the reliability of ecotoxicological studies is crucial for accurate toxicity value development.
  • Existing critical appraisal tools (CATs) are not fully established for ecotoxicology, lacking comprehensive bias assessment.

Purpose of the Study:

  • To propose a novel framework for assessing the reliability of ecotoxicological studies.
  • To address the need for a systematic approach to evaluate bias and internal validity in ecotoxicity data.
  • To enhance transparency and consistency in determining study reliability for ecological risk assessment.

Main Methods:

  • Development of the ecotoxicological study reliability (EcoSR) framework.
  • Building upon established risk of bias (RoB) assessment approaches from human health studies.
  • Incorporating ecotoxicity-specific criteria and methods used by regulatory bodies.
  • Structuring the framework into two tiers: preliminary screening and full reliability assessment.

Main Results:

  • The EcoSR framework provides a systematic method for appraising ecotoxicity studies.
  • It enhances transparency and consistency in evaluating study reliability.
  • The framework is flexible, customizable, and applicable to various chemical classes.

Conclusions:

  • The EcoSR framework significantly improves the transparency and reproducibility of ecotoxicological study appraisals.
  • It contributes to more informed and reliable toxicity value development in ecological sciences.
  • This systematic approach supports better-informed ecological risk assessments.