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Related Concept Videos

Halogenation of Alkenes02:46

Halogenation of Alkenes

Halogenation is the addition of chlorine or bromine across the double bond in an alkene to yield a vicinal dihalide. The reaction occurs in the presence of inert and non-nucleophilic solvents, such as methylene chloride, chloroform, or carbon tetrachloride.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
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Production of Biopesticides

Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
Radical Substitution: Allylic Bromination01:27

Radical Substitution: Allylic Bromination

In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene01:15

Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene

Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
Formation of Halohydrin from Alkenes02:41

Formation of Halohydrin from Alkenes

An alkene, such as propene, reacts with bromine in the presence of water to yield a halohydrin. Halohydrins contain a halogen and a hydroxyl group attached to adjacent carbons. When the halogen is bromine, it is called a bromohydrin, while a chlorohydrin has chlorine as the halogen.
Anticholinesterase Agents: Poisoning and Treatment01:26

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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...

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Determination of 45 Pesticides in Avocado Varieties by the QuEChERS Method and Gas Chromatography-Tandem Mass Spectrometry
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Bromethalin.

Michael E Peterson1

  • 1Reid Veterinary Hospital, Albany, OR, USA. petersonkate@netscape.net

Topics in Companion Animal Medicine
|June 26, 2013
PubMed
Summary
This summary is machine-generated.

Bromethalin poisoning in pets causes severe neurological damage and potentially fatal brain swelling. Early decontamination and supportive care are critical for managing this dangerous neurotoxin, though the prognosis remains poor.

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Area of Science:

  • Veterinary Toxicology
  • Neuroscience
  • Animal Health

Background:

  • Bromethalin is a potent neurotoxin causing fatal cerebral edema in companion animals.
  • It disrupts cellular energy production by inhibiting adenosine triphosphate (ATP) synthesis.
  • Toxicosis is observed in cats and dogs at low oral exposure levels.

Purpose of the Study:

  • To detail the toxic effects of Bromethalin in companion animals.
  • To outline diagnostic approaches for Bromethalin toxicosis.
  • To review current treatment strategies and prognosis for affected animals.

Main Methods:

  • Clinical case reviews and toxicological data analysis.
  • Description of toxicokinetics and mechanism of action.
  • Summary of diagnostic findings and treatment protocols.

Main Results:

  • High Bromethalin doses lead to rapid onset of severe symptoms including tremors, hyperthermia, seizures, and death.
  • Lower doses cause progressive neurological signs over 12-24 hours, including ataxia, paralysis, and coma.
  • Chemical confirmation in tissues aids diagnosis.

Conclusions:

  • Bromethalin toxicosis presents a significant risk to companion animals, characterized by severe neurotoxicity and cerebral edema.
  • Effective treatment requires immediate decontamination and intensive supportive care, as no specific antidote exists.
  • The guarded to poor prognosis underscores the importance of preventative measures and prompt veterinary intervention.