Related Experiment Video

Updated: Aug 18, 2026

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K
06:45

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K

Published on: January 11, 2019

[The antiaggregant activity of the synthetic antioxidant emoxipin]

V A Stoliarov, A N Repin, V A Markov

    Eksperimental'Naia I Klinicheskaia Farmakologiia
    |March 1, 1993
    PubMed

    More Related Videos

    Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids13:05

    Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

    Published on: June 28, 2019

    Alternative Methods for the Detection of Superoxide Anion Generation in Platelets06:35

    Alternative Methods for the Detection of Superoxide Anion Generation in Platelets

    Published on: March 29, 2024

    Related Concept Videos

    Oxidation of Phenols to Quinones01:17

    Oxidation of Phenols to Quinones

    In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
    o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
    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,...
    Combined Effects of Drugs: Antagonism01:30

    Combined Effects of Drugs: Antagonism

    The combined effects of drugs can result in various interactions, of which an important type is antagonism. Antagonism is a mechanism where one drug inhibits or counteracts the effects of another drug. Antagonism can occur through various means, including receptor binding, allosteric modulation, functional interaction, chemical reactions, and pharmacokinetic processes.
    The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
    Cholinergic Antagonists: Chemistry and Structure-Activity Relationship01:29

    Cholinergic Antagonists: Chemistry and Structure-Activity Relationship

    Cholinergic antagonists bind to cholinergic receptors and limit the effects of acetylcholine and other cholinergic agonists. Based on the specific cholinergic receptor affinity, these antagonists are classified as muscarinic or nicotinic. Anticholinergics interrupt parasympathetic innervations while sympathetic innervations remain uninterrupted. Muscarinic antagonists are also called 'muscarinic antagonists', 'antimuscarinics', or 'parasympatholytics'. Nicotinic antagonists are called...
    Adrenergic Agonists: Chemistry and Structure-Activity Relationship01:16

    Adrenergic Agonists: Chemistry and Structure-Activity Relationship

    Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
    Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
    Separation of the aromatic...
    Drugs Affecting Neurotransmitter Synthesis01:29

    Drugs Affecting Neurotransmitter Synthesis

    Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase, which converts...