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Related Concept Videos

Toxicokinetics: Overview01:21

Toxicokinetics: Overview

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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...
122
Toxicity Testing in Animals01:23

Toxicity Testing in Animals

92
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...
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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

Toxic Reactions: Overview

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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.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
3.3K
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

114
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...
114
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

99
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...
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Forensic Toxicology: An Introduction.

Michael P Smith1, Martin H Bluth2

  • 1Oakland University William Beaumont School of Medicine, Rochester, MI, USA; Toxicology and Therapeutic Drug Monitoring Laboratory, Beaumont Laboratories, Beaumont Hospital-Royal Oak, 3601 West 13 Mile Road, Royal Oak, MI 48073, USA.

Clinics in Laboratory Medicine
|November 16, 2016
PubMed
Summary

This article provides an overview of forensic toxicology, covering workplace drug testing, postmortem analysis, and human performance toxicology. It details specimen types, analytical methods, and result interpretation in this scientific discipline.

Keywords:
Forensic toxicologyHuman performance toxicologyPostmortem toxicologyWorkplace drug testing

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Area of Science:

  • Forensic Toxicology
  • Analytical Chemistry
  • Toxicology

Background:

  • Forensic toxicology is a critical scientific discipline.
  • It involves the application of toxicology to legal matters.
  • Understanding its components is essential for accurate interpretation.

Purpose of the Study:

  • To provide a comprehensive overview of forensic toxicology.
  • To elucidate the main components of the discipline.
  • To discuss key aspects of specimen analysis and interpretation.

Main Methods:

  • Literature review and synthesis of existing knowledge.
  • Description of common analytical techniques used in forensic toxicology.
  • Explanation of specimen types relevant to forensic analysis.

Main Results:

  • Forensic toxicology comprises three primary areas: workplace drug testing, postmortem toxicology, and human performance toxicology.
  • Various biological specimens are analyzed.
  • Standardized methods and interpretation guidelines are applied.

Conclusions:

  • Forensic toxicology is a multifaceted field with distinct sub-disciplines.
  • Accurate specimen selection, validated methods, and proper interpretation are crucial for reliable results.
  • This overview serves as a foundational guide to the discipline.