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Types of Toxins

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...

Antidotes

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,...

Prevention of Further Absorption of Poison

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 Treatment

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 Poison

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...

Pharmaceutical Poisoning: Treatment Strategies

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...

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Keratinocyte growth factor protects mice from chemotherapy and radiation-induced gastrointestinal injury and mortality.

Cancer research·1998

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Combined treatment of acute EAE in Lewis rats with TNF-binding protein and interleukin-1 receptor antagonist.

Experimental neurology·1998

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Coley's toxins.

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Related Experiment Video

Updated: Jul 18, 2026

Functional Evaluation of Biological Neurotoxins in Networked Cultures of Stem Cell-derived Central Nervous System Neurons

Functional Evaluation of Biological Neurotoxins in Networked Cultures of Stem Cell-derived Central Nervous System Neurons

Published on: February 5, 2015

Coley's toxins in perspective.

¹Amgen, Inc., Thousand Oaks, CA 91320-1789.

|May 7, 1992

Summary

Tumour necrosis factor (TNF) has shown disappointing results in cancer treatment. However, improved patient selection and tailored therapies may still offer therapeutic benefits.

Area of Science:

Oncology
Immunology
Cancer Biology

Background:

Tumour necrosis factor (TNF) is a pro-inflammatory cytokine with a complex role in cancer.
Initial investigations into TNF as a cancer therapeutic yielded limited success.
The pleiotropic effects of TNF necessitate a nuanced approach to its clinical application.

Discussion:

The broad systemic effects of TNF can lead to significant toxicity, limiting its therapeutic window.
Understanding the specific molecular pathways influenced by TNF in different cancer types is crucial.
Biomarkers for patient selection may help identify individuals most likely to respond to TNF-based therapies.

Key Insights:

Direct administration of TNF has not proven broadly effective for cancer treatment.

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Patient stratification based on tumor characteristics and immune profiles is essential for potential success.

Targeted delivery or combination therapies involving TNF may overcome previous limitations.

Outlook:

Future research should focus on identifying predictive biomarkers for TNF response.
Exploring novel therapeutic strategies, such as regional delivery or combination with other agents, is warranted.
Personalized medicine approaches could unlock the potential of TNF in specific oncological settings.