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Related Concept Videos

Antidotes01:17

Antidotes

Antidotes are medicinal substances used to counteract the harmful effects of toxins or drugs in the body. They function in various ways, each uniquely designed to combat specific toxic compounds.
Specific antidotes operate by inhibiting the enzymes that control biochemical pathways, reducing the production of harmful metabolites.
An example of an antidote is atropine, which counteracts the detrimental effects of cholinesterase inhibitors. It achieves this by deactivating muscarinic receptors,...
Pharmaceutical Poisoning: Treatment Strategies01:26

Pharmaceutical Poisoning: Treatment Strategies

Treatment strategies for poisoning are a critical aspect of emergency medicine, focusing on preventing the absorption of toxins and enhancing their elimination. When a poisoning incident occurs, the first response is to halt exposure and decontaminate the patient, particularly through gastrointestinal (GI) methods if the poison was ingested.Gastrointestinal Decontamination Techniques:Activated charcoal is the cornerstone of GI decontamination. It works through adsorption, binding the toxin to...
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...
Anticholinesterase Agents: Poisoning and Treatment01:26

Anticholinesterase Agents: Poisoning and Treatment

Anticholinesterases, also known as cholinesterase inhibitors, work by blocking the breakdown of acetylcholine, leading to its accumulation in the synaptic cleft. This accumulation indirectly enhances both muscarinic and nicotinic actions. These agents are classified as reversible or irreversible based on their mechanism of action.     
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is slower than the...
Enhanced Elimination of Poison01:26

Enhanced Elimination of Poison

Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Toxidromes: Clinical Features01:30

Toxidromes: Clinical Features

Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...

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Related Experiment Video

Updated: May 24, 2026

Intra-cardiac Side-Firing Light Catheter for Monitoring Cellular Metabolism using Transmural Absorbance Spectroscopy of Perfused Mammalian Hearts
08:51

Intra-cardiac Side-Firing Light Catheter for Monitoring Cellular Metabolism using Transmural Absorbance Spectroscopy of Perfused Mammalian Hearts

Published on: May 12, 2019

Antidotes for acute cyanide poisoning.

Stephen W Borron1, Frederic J Baud

  • 1Texas Tech University Health Sciences Center at EI Paso, Paul L. Foster School of Medicine, USA. stephen.borron@ttuhsc.edu

Current Pharmaceutical Biotechnology
|February 23, 2012
PubMed
Summary

Cyanide poisoning, a serious condition affecting mitochondrial function, requires prompt supportive care and antidotal treatment. Various antidotes exist, each with unique mechanisms and benefits for cyanide toxicity management.

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A Direct, Early Stage Guanidinylation Protocol for the Synthesis of Complex Aminoguanidine-containing Natural Products

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Intra-cardiac Side-Firing Light Catheter for Monitoring Cellular Metabolism using Transmural Absorbance Spectroscopy of Perfused Mammalian Hearts
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Published on: May 12, 2019

A Direct, Early Stage Guanidinylation Protocol for the Synthesis of Complex Aminoguanidine-containing Natural Products
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A Direct, Early Stage Guanidinylation Protocol for the Synthesis of Complex Aminoguanidine-containing Natural Products

Published on: September 9, 2016

Area of Science:

  • Toxicology
  • Biochemistry
  • Emergency Medicine

Background:

  • Cyanide poisoning presents diverse clinical scenarios due to its industrial use, combustion presence, and varied forms.
  • Mitochondrial cytochrome oxidase is the primary molecular target of cyanide toxicity.
  • Poisoning severity is influenced by exposure route, dose, and chemical properties.

Purpose of the Study:

  • To review the clinical presentation and management strategies for cyanide poisoning.
  • To discuss the mechanisms and comparative effectiveness of available cyanide antidotes.
  • To highlight ongoing research for novel cyanide antidote development.

Main Methods:

  • Literature review of cyanide poisoning mechanisms, clinical features, and treatment options.
  • Analysis of current antidotal therapies, including hydroxocobalamin and methemoglobin inducers.
  • Discussion of antidote efficacy, safety profiles, and regional availability.

Main Results:

  • Common symptoms include respiratory distress, vital sign abnormalities, altered mental status, seizures, and lactic acidosis.
  • Effective treatment combines robust supportive care with specific antidotal therapy.
  • Current antidotes, utilizing mechanisms like chelation and methemoglobin induction, are effective but have distinct advantages and disadvantages.

Conclusions:

  • Cyanide poisoning necessitates comprehensive management including supportive care and antidotes.
  • Hydroxocobalamin offers a safer alternative to methemoglobin inducers, particularly in smoke inhalation cases.
  • Continued research is essential for developing improved and safer cyanide antidotes.