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Related Concept Videos

Diabetic Neuropathy01:22

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

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...
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

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,...
Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
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...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...

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Related Experiment Video

Updated: May 29, 2026

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity
07:42

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity

Published on: April 26, 2012

Toxic neuropathy.

Hadi Manji1

  • 1MRC Centre for Neuromuscular Diseases, National Hospital, London, UK. Hadi.Manji@uclh.nhs.uk

Current Opinion in Neurology
|September 8, 2011
PubMed
Summary
This summary is machine-generated.

Recent research on toxic and drug-related neuropathies focuses on understanding mechanisms using neurophysiological techniques. While chemoprotectants show limited clinical success, new methods may predict high-risk individuals for these debilitating nerve conditions.

Related Experiment Videos

Last Updated: May 29, 2026

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity
07:42

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity

Published on: April 26, 2012

Area of Science:

  • Neuroscience
  • Toxicology
  • Pharmacology

Background:

  • Drug-induced neuropathies represent a significant clinical challenge.
  • Understanding the mechanisms and identifying at-risk individuals are crucial for patient care.

Purpose of the Study:

  • To review recent publications on toxic and drug-related neuropathies.
  • To highlight current research areas and emerging concerns in the field.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of neurophysiological techniques (e.g., excitability studies).
  • Examination of pharmacogenetic approaches and chemoprotectant research.

Main Results:

  • Chemotherapy-induced peripheral neuropathy research focuses on underlying mechanisms and early detection.
  • Current chemoprotectant trials lack proven clinical efficacy.
  • Alcohol-induced neuropathy may be reclassified as toxic; nitrous oxide and triazole antifungals are emerging causes of neuropathy.

Conclusions:

  • Neurophysiological techniques and pharmacogenetics offer promise in understanding drug-induced neuropathies and identifying at-risk patients.
  • Development of effective chemoprotective agents remains an optimistic goal.
  • Clinicians must be aware of emerging causes like nitrous oxide and triazole-induced neuropathies.