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Mini Episode: Fundamentals: Testings Tests, Addictions vs Dependence, How Do We Alter Drug Absorption, What Do Drugs Do?
Bonus Episode10th June 2020 • The Poison Lab • Clinical Toxicology LLC
00:00:00 00:32:03

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Concepts in this episode

Ryan and Toxo introduce their roles while explaining the current state of toxicology and what exactly a poison is.

testing our tests

  • Sensitivity: Rate of Positive test in those who have the disease
  • Specificity: Rate of negative test in those without the disease
  • Positive predictive value: True positive/ True Positive + False Positive
  • Negative predictive value: True negative/True negative + False negative

Pharmacokinetics and dynamics

  • (PK) Bioavailablity = Amount of drug available to be used by the body
  • Oral Bioavailablity= Dose- Fraction excreted unchanged- Fraction metabolized in gut- Fraction metabolized by liver 
  • How drugs interact with the body (PD)
  • Agonist- stimulates receptor
  • Partial agonist- Activation of receptor with ceiling effect, never achieves maximal activation
  • Antagonist- Prevents receptor activation
  • Inverse agonist- induces an opposite effect as an agonist after binding receptor
  • Addiction vs dependance
  • Addiction- Relationship between user and substance
  • A few definitions but frequently involving consequences in life from use and loss of control over use of substance
  • Dependence- Physiologic changes in body due to chronic use
  • Down regulation of stimulated receptors
  • Physiologic basis for tolerance and withdrawal

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  • Email: Toxtalk1@gmail.com

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