Related Experiment Video
Updated: May 28, 2026
09:23
Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
Published on: June 21, 2015
Mechanisms pertaining to arsenic toxicity
Amrit Pal Singh1, Rajesh Kumar Goel, Tajpreet Kaur
1Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar - 143 005.
Toxicology International
|October 7, 2011
Summary
Chronic arsenic exposure from drinking water poses a global health risk, leading to various toxic effects including cardiovascular issues, diabetes, and organ damage. This review details the mechanisms behind arsenic toxicity and its impact on different organs.
Area of Science:
- Environmental Health
- Toxicology
- Public Health
Background:
- Arsenic contamination in drinking water is a significant global environmental health concern.
- Chronic arsenic exposure is linked to increased risks of cardiovascular abnormalities, diabetes mellitus, neurotoxicity, and nephrotoxicity.
- Arsenic exposure may impair liver function, induce hepatotoxicity, and is associated with carcinogenicity, particularly skin, bladder, and lung cancers.
Purpose of the Study:
- To review the diverse mechanisms involved in the pathogenesis of arsenic-induced toxicity.
- To elucidate the pathways leading to end-organ damage from chronic arsenic exposure.
Main Methods:
- Literature review of studies on arsenic toxicity mechanisms.
- Analysis of research on arsenic's impact on various organ systems.
- Synthesis of data on arsenic-related carcinogenicity.
Main Results:
- Arsenic exposure triggers complex toxicological pathways.
- Multiple organs are susceptible to arsenic-induced damage.
- Carcinogenic potential of arsenic is a critical concern.
Conclusions:
- Understanding arsenic's pathogenic mechanisms is crucial for mitigating its health effects.
- Further research is needed to fully address arsenic-induced toxicity and end-organ damage.
- Public health strategies must focus on reducing arsenic exposure from drinking water.
Related Concept Videos
01:26Toxic 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,...
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,...
01:26Anticholinesterase 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...
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is slower than the...
01:24Drug 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...
01:00Drug 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...
01:17Antidotes
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,...
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,...
01:25Bioactivation and Tissue Toxicity
Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...