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Drugs that Destabilize Microtubules01:10

Drugs that Destabilize Microtubules

Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
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Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
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Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment
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Published on: January 7, 2015

Colchicine exposures: the Texas experience.

Marc E Levsky1, Michael A Miller, David A Masneri

  • 1Darnall Army Community Hospital, Ft. Hood, TX, USA.

Southern Medical Journal
|April 17, 2008
PubMed
Summary

Colchicine overdose is rare, with most exposures causing no significant effects or fatalities. This study analyzed colchicine ingestion patterns and outcomes to improve understanding of this uncommon toxin.

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Area of Science:

  • Toxicology
  • Pharmacology
  • Clinical Medicine

Background:

  • Colchicine is an uncommon toxin known for severe outcomes in overdose.
  • Limited data exists on colchicine exposure patterns and patient outcomes.

Purpose of the Study:

  • To investigate colchicine exposure patterns and associated medical outcomes.
  • To contribute to the toxicologic knowledge base regarding colchicine ingestion.

Main Methods:

  • A retrospective review of the Texas Poison Center Network database from 2000-2005.
  • Inclusion of all reported cases of colchicine exposure.

Main Results:

  • 79 cases of colchicine exposure were identified.
  • Most common reasons for exposure: therapeutic error (33%), unintentional (28%), and suspected suicide (18%).
  • Outcomes: no effect (24%), minor (20%), moderate (15%), major (3%); common symptoms included vomiting, diarrhea, and abdominal pain.

Conclusions:

  • Colchicine exposure rarely results in significant morbidity or mortality.
  • Effective record-keeping at poison centers is crucial for studying uncommon toxins like colchicine.